Drywall screw production line

Among the construction materials, one of the most widely used products is a drywall screw. It is always liked by customers due to its wide range of applications and long service life. This self-tapping screw, the drywall screw production line is a complex process that requires a variety of machines and processes to produce a high-quality product. The raw material used in this screw production line is 2.9 mm black wire, which is then drawn through a wire drawing machine. This equipment is used to reduce the diameter of the wire and create a uniform shape. 

The next step of this self-drilling production line is the equipment for the production of drywall screws. This equipment is used to cut wires to the desired length and shape in the manufacture of drywall screws. The cold heading machine US-TOPS-CH50 is then used to form the head of the screw. This machine is designed to create a consistent head shape and size. The cold heading machine US-TOPS-CH76 is then used to form the threads on the screw. 

 

 

After that, the thread rolling machine US-TOPS-TR52 is then used to roll the threads on the screw. The drying machine is then used to dry the screws before they are sent to the mesh-belt furnace. The mesh belt furnace is used to heat treat screws to increase their strength and durability.

The final step of this screw production line is the screw electro-galvanizing line. This process is used to coat the screws with a protective layer of zinc. This layer helps to protect the screws from corrosion and other environmental factors.

In general, the self-drilling, the drywall screw production line is a complex process that requires a variety of tools and processes to produce a high-quality product. The raw material, wire drawing machine, drywall screw making machine, cold heading machines, thread rolling machine, drying machine, mesh-belt furnace, and screw electro galvanized production line are all essential components of the production line.

MACHINE COMPONENTS
1.	Raw material	2.9 mm black wire
		Wire drawing machine
2.	Drywall screw making machine	Cold heading machine US-TOPS-CH50
		Cold heading machine US-TOPS-CH76
		Cold heading machine US-TOPS-CH100
		Thread rolling machine US-TOPS-TR52
		Thread rolling machine US-TOPS-TR102
		Drying machine
3.	Mesh-belt Furnace
4.	Screw electro galvanized production line

 

RAW MATERIAL
1.	Steel wire SAE1022A	2.9 mm	10 ton

 

Wire drawing machine - draw 2.9 mm to 2.7 mm
1.	Drum outside diameter	560 mm
2.	Units quantity	1 draws
3.	Inlet wire diameter	2.9 mm
4.	Outlet wire diameter	2.7 mm
5.	Motor power	7.5 KW x 1
6.	Voltage	380 V / 50 Hz
7.	Dimensions	1 draws is 3600 x 1300 x 2000 mm
8.	Weight	1000 kg
9.	Production capacity	3.0 tons / 8 hours
10.	Lifting wire device	1 pc

 

 

DRYWALL SCREW MAKING MACHINE   COLD HEADING MACHINE
1.	Model	US-TOPS-CH50	US-TOPS-CH76	US-TOPS-CH100
2.	Wire diameter	2.5 - 3.5 mm	2.5 - 5.0 mm	2.9 - 5.0 mm
3.	Nail length	15 - 50 mm	50 - 85 mm	85 - 110 mm
4.	Working  speed	150 pcs / min	130 pcs / min	110 pcs / min
5.	Motor power	2.2 KW	2.2 KW	2.2 KW
6.	Dimensions	1700 x 1400 x 1450 mm	2100 x 1100 x 1500 mm	2100 x 1100 x 1500 mm
7.	Weight	1700 kgs	2000 kgs	2000 kgs

 

THREAD ROLLING MACHINE
1.	Model	US-TOPS-TR52	US-TOPS-TR102
2.	Wire diameter	2.7 - 4.2 mm	3.2 - 6.0 mm
3.	Nail length	17 - 52 mm	52 - 102 mm
4.	Working  speed	180 - 200 pcs / min	180 - 200 pcs / min
5.	Output	30 kg / hour	30 kg / hour
6.	Motor power	3 KW	3 KW
7.	Dimensions	1900 x 1400 x 1450 mm	1900 x 1400 x 1450 mm
8.	Weight	900 kgs	900 kgs

 

SPIN-DRY MACHINE
1.	Model	US-TOPS-D70
2.	Capacity	50 - 70 kg
3.	Inner drum size	Φ500 mm x 400 mm
4.	Rotating speed	530 r / min
5.	Motor power	1.1 KW
6.	Electric wire power	3 KW
7.	Dimensions	800 x 1000 x 850  mm
8.	Weight	150 kg

 

MESH-BELT FURNACE
The mesh-belt furnace is special used for batch production small and medium metal parts, such as screw, standard fasteners, bearing, etc.	Feeding part	1set
	Mesh-belt quenching furnace	1set
	Water (oil) tank lifting	1set
	Mesh-belt tempering furnace	1set
	PID electrical cabinet	1set

 

Feeding part + RCWF9 Mesh-belt quenching furnace
Furnace shell is steel structure ,the base and structure adopt channel steel. There is rib stiffened laminate inside the furnace shell. There is flexible seal bolt to lock the up and down furnace body, it is very easy maintance. The furnace body and lining use high-alumina brick, and aluminium silicate needle-felted carpet to keep warm. The heating pipe is made of CR20Ni80 Nickel-chromium resistance wire. Heating method is up and down heating. Heating power is 75 KW, and three areas control the temperature separately. There is sic plate on the brick, and muffle on sic plate. The material of muffle is 310S stainless steel plate, thickness is 8 mm. Also have high alumina ball and 310S stainless steel ball box. There is 310S removable furnace bottom plate, pipe valve for protect gas and methyl alcohol cracking unit. The mesh belt width is 300 mm, and material is 314 Stainless steel with herringbone structure and mechanical stepping frequency control device. Power is 0.75 KW.	Heating power	75 KW
	Voltage	380 V / 50 Hz
	Max operating temperature	950 ℃
	Working temperature	750 ~ 850 ℃
	Temperature controlling area	3 areas
	Temperature controlling tolerance	± 2 ℃
	Furnace temperature homogeneity	± 5 ℃
	Width of the mesh	300 mm
	Material of mesh	Stainless steel 314, herringbone
	Driver power	0.75 KW
	Muffle effective size	350 x 120 mm
	Methyl alcohol dosage	approx 3 kg / hour
	Output	approx 120 - 150 kg / hour

 

 

Water (oil) tank and lifting
The tanks is steel structure and base is channel steel.The mesh belt width is 300mm,and material is 314 Stainless steel with herringbone structure. mechanical stepping frequency control device.The motor power is 0.75kw.

Furnace shell is steel structure, the base and structure adopt channel steel. There is rib stiffened laminate inside the furnace shell, Alumina silicate fibre keep warm. These is heating chamber in the furnace, 2.2 KW heated air circulation fan and wind direction guide plate. The heating rod is made of CR20Ni80 Nickel-chromium resistance wire. Heating power is 40 KW. The mesh belt width is 450 mm, and material is galvanized A3 with herringbone structure and mechanical speed governors chain wheel transmission. The power is 0.75 KW.

Mesh-belt tempering furnace
1.	Heating power	40 KW
2.	Voltage	380 V / 50 Hz
3.	Max operating temperature	650 ℃
4.	Working temperature	400 ~ 500 ℃
5.	Temperature controlling area	1 area
6.	Temperature controlling tolerance	± 2 ℃
7.	Furnace temperature homogeneity	± 5 ℃
8.	Width of the mesh	450 mm
9.	Material of mesh	Galvanized A3, herringbone
10.	Circulating fan power	2.2 KW

 

PID electrical cabinet

 

Four area (three area for quenching, one area for tempering) control the temperature separately. Adopt the intelligent temperature controller, Solid-state relay, Pid adjust the power and control temperature automatically. Also have the device for adjusting power manually. Control the temperature for quenching and tempering automatically. Besides also control each area’s mesh belt frequency conversion and water (oil) pump. If the furnace is over temperature, it will alarm automatically.

 

SCREW ELECTRO GALVANIZED PRODUCTION LINE
1.	Model	US-TOPS-EGN-2/1
2.	Type of galvanization	rotating galvanization
3.	Size of nail	all sizes
4.	Material of tank	PE, thickness 15 mm
5.	Rotating drum	size: Φ500 mm x 1100 m
		capactity: 120 - 150 kg / drum
		quantity: 3 drums (2 pcs on machine, 1 pc as spare)
6.	Production capacity	300 kgs per time
7.	Production time	2 hours per time
8.	High frequency rectifier	1000 KVA x 1 pc
9.	Power supply	380 V / 50 Hz, 3 phase
10.	Total motor power	13.6 KW