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COLD FORMING EQUIPMENT FOR SELF TAPPING SCREWS AND RIVETS

 

SELF TAPPING SCREWS PRODUCTION

различные саморезы

Taiwan Fastener Alliance offers a wide range of cold heading and thread rolling equipment for the production of self-tapping screws. In order to correctly select the model and set of equipment for self-tapping screws, which will guarantee the output of products for which there is a great demand in the market, you must specify:

  • The diameter of the product.
  • The length of the produced product.
  • Specify the presence of a drill.
  • Specify the type of screw, its purpose (wood, metal, concrete, roofing, window).
  • Give drawing, photo or specify DIN or GOST standard.
Equipment for the production of self-tapping screws and screws
  • Thanks to the fully sealed design, the cased cold heading machines have the lowest noise level and the highest environmental performance.
  • The service life of the cold forming machines and machine tools is much longer due to the exclusion of dust or foreign objects entering the machine.
  • Cold heading equipment with a protective cover guarantees maximum protection of the operating personnel. This is ensured due to several design features of the machines: a closed oil tank completely excludes ignition from the effects of an open flame or sparks in the workshop, safety sensors will perform an emergency shutdown of the equipment in the event of unauthorized access inside the machines and in the event of abnormal situations in operation, connecting the exhaust ventilation to the machine removes the arising in the process of cold disembarkation of fumes.
  • Advanced control of cold heading parameters.
  • Maximum standard and optional configurations.

Complete set of equipment for self tapping screws production

Standard equipment

  • 1 set of machine tools
  • Wire unwinder
  • Automatic counting device
  • Work lighting
  • Maintenance tools
  • Passport
  • Operation manual in English
  • Electrical cabinet (with protection class IP 64)


Additional equipment (optional)

  • Security door with power cut-off and automatic shutdown system (option)
  • Inverter (optional)
  • The conveyor for chip removal
  • Certification CE



A range of cold heading equipment for the production of self-tapping screws and screws

Cold heading machine in protective housing Model RA-2C
RA-2C
Cold heading machine in protective cover Model RA-5.5C
RA-5.5C
Cold heading machine in protective housing Model RA-10C
RA-10C
cold heading machine RA-15C with an installed conveyor for unloading parts
RA-15C with an unloading conveyor
cold punching equipment RA-20Cx76 with an installed conveyor for unloading parts
RA-20Cx76 with an unloading conveyor
Cold heading machine in protective housing RA-25C
RA-25C


Technical characteristics of equipment for production of self-tapping screws and bolts

ModelMax. blank diameterMax.blank lengthThe stroke length of the slideCapacity, pcs./min.Diameter of the main dieDiameter of the cutting dieThe first punchThe second punchPower of main engineOil pumpDimensions,
L×W×H, сm
Net weight, kgGross Weight , kg
RA-2C0.8~3 mm24 mm38 mm190~22020 mm13.5 mm18 mm18 mm1 HP¼ HP165×110×156860930
RA-5.5C2~3.5 mm28 mm46 mm200~25025 mm13.5 mm18 mm18 mm1 HP¼ HP175×115×1859801050
RA-10C2~4 mm32 mm58 mm190~22030 mm15 mm24 mm20 mm2 HP¼ HP185×130×20010601360
RA-15C4~5 mm64 mm92 mm150~18034.5 mm19 mm31 mm31 mm2 HP¼ HP198×130×17519302130
RA-15C4~5 mm76 mm110 mm150~18034.5 mm19 mm31 mm31 mm2 HP¼ HP198×130×17520302230
RA-20C4~6 mm76 mm124 mm80~10045 mm25 mm36 mm36 mm3 HP¼ HP240×140×15027752280
RA-20C4~6 mm102 mm160 mm80~10045 mm25 mm36 mm36 mm3 HP¼ HP265×140×18832503400
RA-25C4~8 mm152 mm160 mm65~8560 mm32 mm38 mm38 mm7 ½ HP¼ HP350×160×18045004650

For more information on cold heading machines in a protective casing, see the page.






COLD HEADING EQUIPMENT FOR SELF TAPPING SCREWS IN A SEMI-PROTECTION COVER

Models of cold heading equipment for the production of screws with semi-protection cover is relatively easier to operate compared to models in a protective cover, and more environmentally friendly. Currently, this equipment is the most popular choice among our clients. Cold forging equipment for the semi-protective cover are represented by machines of large and medium size, ideal for the production of high-quality large and microscopic screws used in machinery, automotive, photo-electronics, precision electronics (iPhone), electrical engineering, automotive industry and others. Fasteners of this equipment can withstand shock and vibration.


RA-5S
RA-5S
RA-5.5S
RA-5.5S
RA-10S
RA-10S
RA-15S
RA-15S
RA-20S
RA-20S


Technical characteristics of equipment for production of self tapping screws and bolts

ModelMax.blank diameterMax.blank lengthThe stroke length of the slidePerformance,
pcs./min.
Diameter of the main dieDiameter of the cutting dieThe first punchThe second punchDrive powerOil pumpDimensions
L×W×H, mm
Net weight, kgGross weight, kg
RA-5S0.8-3 mm24 mm38 mm170~20020 mm13.5 mm18 mm18 mm1 HP¼ HP1650×1100×1560820880
RA-5.5S2-3.5 mm28 mm46 mm200~25025 mm13.5 mm18 mm18 mm1 HP¼ HP1750×1150×15509801050
RA-10S2-4 mm32 mm58 mm190~22030 mm15 mm24 mm20 mm2 HP¼ HP1850×1300×172010501160
RA-15S4-5 mm64 mm92 mm150~18034.5 mm19 mm31 mm31 mm2 HP¼ HP2100×1100×132017501840
RA-15S4-5 mm76 mm110 mm150~18034.5 mm19 mm31 mm31 mm2 HP¼ HP2100×1100×132018601980
RA-20S4-6 mm76 mm124 mm90~11045 mm25 mm36 mm36 mm3 HP¼ HP2400×1400×150026452750
RA-20S4-6 mm102 mm156 mm80~10045 mm25 mm36 mm36 mm3 HP¼ HP2650×1500×150032103360



EQUIPMENT FOR COLD HEADING (PRODUCTION) OF SELF TAPPING SCREWS WITHOUT A PROTECTION COVER

 

RA-5.5
RA-5
RA-5.5
RA-5.5
RA-10
RA-10
RA-15
RA-15
RA-20
RA-20


Technical Specification of Equipment for the production of self tapping screws and bolts

ModelMax.blank diameterMax.blank lengthThe stroke length of the slidePerformance,
pcs./min.
Diameter of the main dieDiameter of the cutting dieThe first punchThe second punchDrive powerOil pumpDimensions
L×W×H, mm
Net weight, kgGross weight, kg
RA-50.8-3 mm24 mm38 mm170~20020 mm13.5 mm18 mm18 mm1 HP¼ HP1370×840×1020500560
RA-5.52-3.5 mm28 mm46 mm200~25025 mm13.5 mm18 mm18 mm1 HP¼ HP1750×1100×1600780860
RA-102-4 mm32 mm58 mm190~22030 mm15 mm24 mm20 mm2 HP¼ HP1690×1090×12609601060
RA-154-5 mm64 mm92 mm150~18034.5 mm19 mm31 mm31 mm2 HP¼ HP2100×1100×132016401750
RA-154-5 mm76 mm110 mm150~18034.5 mm19 mm31 mm31 mm2 HP¼ HP2100×1100×132017501860
RA-204-6 mm76 mm124 mm90~11045 mm25 mm36 mm36 mm3 HP¼ HP2400×1400×150024002500
RA-204-6 mm102 mm156 mm90~11045 mm25 mm36 mm36 mm3 HP¼ HP2400×1400×150024002500
RA-254-8 mm102 mm160 mm65~8560 mm32 mm38 mm38 mm7 ½ HP¼ HP3500×1510×135040004150
RA-3010 mm152 mm230 mm52~6080 mm40 mm55 mm55 mm15 HP½ HP4450×1740×151070007000
RA-4013 mm152 mm230 mm50~6098 mm48 mm68 mm68 mm30 HP½ HP5000×2050×18001200012000





ORDER-MADE COLD HEADING TOOL FOR MAKING SCREWS, SELF-TAPING SCREWS AND RIVETS

We have the ability to develop machine tools and accessories according to the drawings of finished products and the technical requirements of the customer. To do this, it is necessary to clarify the size of the fittings for the equipment, the model of the cold heading machines used and the diameter of the wire used for the upsetting of fasteners, hardware and parts).

order-made cold heading machine tools order-made cold heading machine tools



FULL SELF-TAPPING SCREW PRODUCTION CYCLE (FOR REFERENCE)

The wire goes through several stages of processing before becoming a self-tapping screw. Formation of the workpiece by means of a cold heading machine. At this stage, the product acquires the required length, tip and head. The threaded rod thread is then cut on the thread rolling machine.

Furthermore, in production the additional stage is possible - if the self-tapper has a drill it is necessary to use additional equipment to form the drill.

To improve product quality, surface hardening processes can be added to increase the strength of the product and anticorrosion treatment. The product is then packed and packaged in plastic bags and boxes.


WireHeadingTail-ClampingThread-RollingHeat TreatmentSurface TreatmentPackaging PlantPackagingShipping


Self-tapping Screw Cold Heading Technology

The production of blanks for self-tapping screw is carried out on two-impact single-position automatic cold heading machines (upsetting machines). The equipment has two punches (roughing and finishing) and one cold heading die.

The prepared wire is installed on the unwinding device and fed through the roller system of the two-plane straightening device into the receiving opening of the shear die. Next, you need to set the adjustable stop to the desired length of the workpiece. After that, the machine is switched on for a working stroke.

The cut-off knife performs a cut and with the presser feet transfers the workpiece to the upsetting position where the workpiece is picked up by the end of the rough punch, pushed into the upsetting die to the front end of the ejector. After that, the pre-stamping of the self-tapping head takes place. The operation forms about 70% of the self-tapping head shape.

At the second stroke of the actuator, the tool head turns about, as a result of which the second punch is set to the upsetting position, which finally forms the screw head (remaining 30% of shape).

During the return stroke of the slider of the cold heading machine, its ejector extracts the stamped blank from the cavity of the cold heading die, after which the cycle is repeated. The stamped workpiece is fed through the tray into the receiving container.





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