A copper alloy production drawing device

Abstract

The present invention belongs to the technical field of copper alloy drawing, and specifically is a copper alloy production drawing device, including a drawing die, a detection component is provided at one end of the drawing die, the detection component includes a fixed plate, a plurality of movable plates are slidingly provided in the fixed plate, a contact column 1 is fixedly provided at one end of the fixed plate, and a contact column 2 is fixedly provided at one end of the movable plate. When the drawn copper tube passes through the inside of the quasi-circular ring composed of the plurality of movable plates, if the diameter of the copper tube is lower than the diameter of the die hole of the drawing die, the plurality of movable plates slide, and the contact column 1 and the contact column 2 no longer abut; the detection component also includes an L-shaped bracket, one end of the L-shaped bracket is fixed to one end of the drawing die; the present invention detects that the diameter of the copper tube after drawing is smaller than the diameter of the die hole of the drawing die and does not meet the production requirements when the contact 1 on the contact column 1 and the contact 2 on the contact column 2 no longer abut each other by making the diameter of the copper tube after drawing different from the diameter of the die hole of the drawing die.

Description

Technical Field

[0001] The invention belongs to the technical field of copper alloy drawing, in particular to a copper alloy production drawing device. Background Art

[0002] Copper alloy production drawing device is a device used to draw copper alloy materials through a die hole to change their diameter or cross-sectional shape to obtain the desired wire, rod or tube products.

[0003] In the prior art, when copper tubes of required caliber are produced using larger-caliber copper tubes as raw materials, they are pretreated so that the diameter of one end is smaller than the diameter of the die hole on the drawing die. The tubes are then placed in the loading area of ​​the drawing device, and the pretreated end is pulled through the die hole. The clamping device is driven to clamp and fix the part passing through the die hole, and then the hydraulic telescopic rod is driven to contract so that the clamping device drives the copper tube through the die hole, thereby completing the drawing of the copper tube and making the diameter of the copper tube meet the predetermined requirements.

[0004] The existing technology still has some shortcomings in actual use. Since the contraction of the hydraulic telescopic rod will drive the clamping device to move, the clamping device drives the copper tube through the die hole, thereby completing the drawing of the copper tube. However, during long-term use, the hydraulic telescopic rod will malfunction, resulting in excessive drawing force, causing the copper tube to be excessively stretched in the die hole of the mold, and excessive plastic deformation of the copper tube material, resulting in the diameter of the copper tube after drawing being smaller than the diameter of the mold die hole, which cannot meet production requirements.

[0005] To this end, the present invention provides a copper alloy production drawing device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a copper alloy production drawing device described in the present invention includes a drawing die, a detection component is provided at one end of the drawing die, the detection component includes a fixed plate, a plurality of movable plates are slidably arranged in the fixed plate, a contact column 1 is fixedly provided at one end of the fixed plate, and a contact column 2 is fixedly provided at one end of the movable plate. When the drawn copper tube passes through the inside of the quasi-circular ring composed of multiple movable plates, if the diameter of the copper tube is lower than the diameter of the die hole of the drawing die, the multiple movable plates slide, and the contact column 1 and the contact column 2 no longer abut each other.

[0008] Preferably, the detection component also includes an L-shaped bracket, one end of the L-shaped bracket is fixed to one end of the drawing die, and the other end is fixed to the top of the fixed plate, a fixed base is fixedly connected to the fixed plate, a plurality of guide grooves are provided at one end of the fixed base, a guide block is slidably connected in each guide groove, one end of each guide block is slidably connected to a movable plate, one end of each movable plate is fixedly connected to a guide column, one end of the plurality of movable plates is rotatably connected to a rotating annular plate, a plurality of arc grooves are provided in the rotating annular plate, and a guide column slides in each arc groove.

[0009] Preferably, each movable plate is rollingly connected to one side with a plurality of ball rollers 2, and each movable plate is rollingly connected to one end near the middle of the fixed plate with a ball roller 1. When the drawn copper tube passes through the inside of the quasi-circular ring formed by the multiple movable plates, the drawn copper tube can pass through the inside of the quasi-circular ring formed by the multiple movable plates through the rolling of ball rollers 1 and 2.

[0010] Preferably, a concave circular ring sleeve is fixedly provided at one end of the rotating circular ring plate, and the concave circular ring sleeve consists of a short arc ring, a long arc ring and a wide arc ring. The long arc ring is fixed at one end close to the outer ring of the wide arc ring, and the short arc ring is fixed at one end close to the inner ring of the wide arc ring. The short arc ring and the long arc ring are at the same end.

[0011] Preferably, a rotating groove is provided at one end of the fixed base, the long arc ring slides in the rotating groove, the short arc ring is fixed to one end of the rotating circular ring plate, one end of the wide arc ring is fixedly connected to a guide gear 1, a torsion spring is fixedly connected between the surface of the wide arc ring and the inner wall of the fixed plate, one end of the fixed plate is fixedly connected to a support frame, a motor is fixedly connected to the support frame, one end of the fixed plate is rotatably connected to a transmission gear sleeve, and the transmission gear sleeve is meshed with a guide gear 1.

[0012] Preferably, the contact column 1 is composed of a cylinder 1 and a contact 1, and the contact column 2 is composed of a cylinder 2 and a contact 2. The contact 1 and the contact 2 are respectively fixed at one end of the cylinder 1 and the cylinder 2. The other end of the cylinder 1 is fixed to the inner wall of the support frame, and the other end of the cylinder 2 is fixed to one end of the guide gear 1. The contact column 1 and the ball bearing 1 are arranged opposite to each other. When the guide gear 1 rotates, the contact column 1 will abut against the contact column 2.

[0013] Preferably, the inner annular surface of the fixed base and the die hole of the drawing die are on the same axis, and the diameter of the inner annular surface of the fixed base is the same as the diameter of the die hole of the drawing die. When the multiple movable plates are fully retracted, the diameter of the quasi-circular ring formed by the multiple movable plates is the same as the diameter of the inner annular surface of the fixed base.

[0014] Preferably, a cutting assembly is provided between the drawing die and the detection assembly, and the cutting assembly includes a grooving block, and a cutter is slidably provided at one end of the grooving block. When contact column one and contact column two are no longer in contact, the cutter is moved to insert the cutter into the grooving block to cut off the copper tube therebetween.

[0015] Preferably, the cutting assembly also includes a fixed rod, which is fixed to the inner wall of one side of the drawing die, one end of the fixed rod is fixed to the cutting block, and the inner wall of the other side of the drawing die is fixedly connected to an electric telescopic rod, the output end of the electric telescopic rod is fixed to one end of the cutter, one side of the cutter is symmetrically fixedly connected to rack 1, one side of the cutting block is symmetrically fixedly connected to a limiting column, the surface of the limiting column is rotatably connected to a guide gear 2, and a limiting groove is symmetrically provided on one side of the cutting block, and a rack 2 is slidably connected in the limiting groove.

[0016] Preferably, there is a connecting rod between the two racks 1 and between the two racks 2. The two connecting rods are symmetrically arranged with the axis of the die hole of the drawing mold as the center. A rectangular groove is opened in the middle of each connecting rod. A rectangular rod is slidably connected in the rectangular groove. One end of the rectangular rod is fixedly connected to an arc plate, and a reset spring is fixedly connected between the other end of the rectangular rod and the connecting rod.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. In the initial stage of the present invention, multiple movable plates are contracted so that the diameter of the quasi-circular ring formed by them is the same as the diameter of the die hole of the drawing die. Then the copper tube is drawn, and the pretreated copper tube portion passes through the quasi-circular ring formed by the multiple movable plates, so that the contact 1 on the contact post 1 and the contact 2 on the contact post 2 no longer abut each other. As the copper tube is drawn, the drawn copper tube passes through the quasi-circular ring formed by the multiple movable plates. If the diameter of the copper tube after drawing is different from the diameter of the die hole of the drawing die, so that the contact 1 on the contact post 1 and the contact 2 on the contact post 2 no longer abut each other, it is detected that the diameter of the copper tube after drawing is smaller than the diameter of the die hole of the drawing die, which does not meet the production requirements.

[0019] 2. In the present invention, when contact 1 on contact post 1 and contact 2 on contact post 2 no longer abut each other, the output end thereof is extended by the electric telescopic rod, so that rack 1 moves together with the cutter, and in the process of movement of rack 1, rack 2 is moved toward the direction close to the cutter by the rotation of the limit column, driving the connecting rod to move synchronously. In the process of movement of the connecting rod, the arc plate first abuts against the drawn copper tube. At this time, the cutter has not yet cut the copper tube between the cutter and rack 1. As the connecting rod continues to move, the rectangular rod moves and elastically stretches the reset spring until the cutter cuts off the copper tube between the cutter and rack 1, so that the copper tube with a diameter smaller than the die hole of the mold is cut, which is convenient for the next operation and ensures that the copper tube will not deviate during cutting, so that the copper tube in the die hole of the drawing mold will not bend during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic elevation diagram of the overall device of the present invention;

[0022] Figure 2 It is a partial cross-sectional schematic diagram of the overall device of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the detection component of the present invention;

[0024] Figure 4 This is a schematic diagram of the positional relationship between the concave annular sleeve and the guide gear of the present invention;

[0025] Figure 5 This is a schematic diagram of the positional relationship between the rotating annular plate and the arc groove of the present invention;

[0026] Figure 6 For the present invention Figure 5 A in the middle is an enlarged schematic diagram;

[0027] Figure 7 This is a schematic diagram of the positional relationship between the fixing rod and the cutting block of the present invention;

[0028] Figure 8 This is a schematic diagram of the cutting assembly of the present invention;

[0029] Figure 9 For the present invention Figure 8 Enlarged schematic diagram of point B in the middle.

[0030] Reference numerals: 1, workbench; 11, feeding device; 12, drawing die; 13, hydraulic telescopic rod; 14, clamping device;

[0031] 21. L-shaped bracket; 22. Fixed plate; 23. Fixed base; 24. Guide groove; 25. Guide block; 26. Movable plate; 27. Guide post; 28. Rotating annular plate; 29. ​​Arc groove; 210. Ball bearing 1; 211. Ball bearing 2; 212. Rotating groove; 213. Concave annular sleeve; 214. Guide gear 1; 215. Torsion spring; 216. Support frame; 217. Motor; 218. Transmission gear sleeve; 219. Contact post 1; 220. Contact post 2.

[0032] 31. Fixed rod; 32. Cutting block; 33. Electric telescopic rod; 34. Cutter; 35. Rack 1; 36. Limiting column; 37. Guide gear 2; 38. Limiting groove; 39. Rack 2; 310. Connecting rod; 311. Rectangular groove; 312. Rectangular rod; 313. Return spring; 314. Arc plate. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] Example 1

[0035] like Figures 1 to 9 As shown, a copper alloy production drawing device according to an embodiment of the present invention includes a drawing die 12, a detection component is provided at one end of the drawing die 12, the detection component includes a fixed plate 22, a plurality of movable plates 26 are slidingly provided in the fixed plate 22, a contact column 1 219 is fixedly provided at one end of the fixed plate 22, and a contact column 2 220 is fixedly provided at one end of the movable plate 26. When the drawn copper tube passes through the inside of the quasi-circular ring formed by the contraction of the plurality of movable plates 26, if the diameter of the copper tube is lower than the diameter of the die hole of the drawing die 12, the plurality of movable plates 26 slide, and the contact column 1 219 and the contact column 2 220 no longer abut against each other.

[0036] Specifically, the drawing die 12 is fixedly arranged at the middle of the top of the workbench 1, a feeding device 11 is provided at one end of the drawing die 12, and a hydraulic telescopic rod 13 is provided at the other end. A clamping device 14 is provided at one end of the hydraulic telescopic rod 13, and the clamping device 14 is located between the drawing die 12 and the hydraulic telescopic rod 13;

[0037] The existing technology still has some shortcomings in actual use. Since the contraction of the hydraulic telescopic rod 13 will drive the clamping device 14 to move, the clamping device 14 will drive the copper tube through the die hole of the drawing die 12, thereby completing the drawing of the copper tube. However, during long-term use, the hydraulic telescopic rod 13 will malfunction, resulting in excessive drawing force, causing the copper tube to be excessively stretched in the die hole of the drawing die 12, and the copper tube material to be excessively plastic and deformed, resulting in the diameter of the copper tube after drawing being smaller than the diameter of the die hole of the drawing die 12, which cannot meet production requirements.

[0038] Therefore, the present invention solves this problem by setting up a corresponding structure. Before drawing the copper tube, the detection component is first driven to shrink the multiple movable plates 26 to form a quasi-circular ring, and then the pre-treated copper tube is pulled to pass through the inside of the quasi-circular ring formed by the multiple movable plates 26. The clamping device 14 clamps the part of the copper tube that passes through the multiple movable plates 26, and then drives the hydraulic telescopic rod 13 to shrink, thereby pulling the copper tube.

[0039] Example 2

[0040] like Figures 2 to 9 As shown, compared with Example 1, another embodiment of the present invention is:

[0041] like Figures 2 to 6As shown, the detection assembly of this embodiment also includes an L-shaped bracket 21, one end of the L-shaped bracket 21 is fixed to one end of the drawing die 12, and the other end is fixed to the top of the fixed plate 22, a fixed base 23 is fixedly connected in the fixed plate 22, a plurality of guide grooves 24 are provided at one end of the fixed base 23, a guide block 25 is slidably connected in each guide groove 24, one end of each guide block 25 is slidably connected to a movable plate 26, one end of each movable plate 26 is fixedly connected to a guide column 27, one end of the plurality of movable plates 26 is rotatably connected to a rotating annular plate 28, a plurality of arc grooves 29 are provided in the rotating annular plate 28, and a guide column 27 slides in each arc groove 29;

[0042] A plurality of second balls 211 are rollingly connected to one side of each movable plate 26, and a first ball 210 is rollingly connected to one end of each movable plate 26 near the middle of the fixed plate 22. When the drawn copper tube passes through the inner portion of the quasi-circular ring formed by the plurality of movable plates 26, the rolling of the first ball 210 and the second ball 211 enables the drawn copper tube to pass through the inner portion of the quasi-circular ring formed by the plurality of movable plates 26.

[0043] A concave annular sleeve 213 is fixedly provided at one end of the rotating annular plate 28. The concave annular sleeve 213 is composed of a short arc ring, a long arc ring and a wide arc ring. The long arc ring is fixed at one end close to the outer ring of the wide arc ring, and the short arc ring is fixed at one end close to the inner ring of the wide arc ring. The short arc ring and the long arc ring are at the same end.

[0044] A rotating groove 212 is formed at one end of the fixed base 23. The long arc ring slides in the rotating groove 212. The short arc ring is fixed to one end of the rotating circular ring plate 28. One end of the wide arc ring is fixedly connected to a guide gear 214. A torsion spring 215 is fixedly connected between the surface of the wide arc ring and the inner wall of the fixed plate 22. One end of the fixed plate 22 is fixedly connected to a support frame 216. A motor 217 is fixedly connected to the support frame 216. One end of the fixed plate 22 is rotatably connected to a transmission gear sleeve 218, which meshes with the guide gear 214.

[0045] Contact post 1 219 is composed of cylinder 1 and contact 1, while contact post 2 220 is composed of cylinder 2 and contact 2. Contact 1 and contact 2 are respectively fixed to one end of cylinder 1 and cylinder 2. The other end of cylinder 1 is fixed to the inner wall of support frame 216, and the other end of cylinder 2 is fixed to one end of guide gear 1 214. Contact post 1 219 is arranged opposite to ball bearing 1 210. When guide gear 1 214 rotates, contact post 1 219 will abut against contact post 2 220.

[0046] The inner annular surface of the fixed base 23 and the die hole of the drawing die 12 are on the same axis, and the diameter of the inner annular surface of the fixed base 23 is the same as the diameter of the die hole of the drawing die 12. When the multiple movable plates 26 are fully retracted, the diameter of the quasi-circular ring formed by the multiple movable plates 26 is the same as the diameter of the inner annular surface of the fixed base 23.

[0047] Specifically, the diameter of the inner ring surface of the rotating annular plate 28 is the same as the diameter of the inner ring surface of the fixed base 23;

[0048] An electric expansion device is provided on the output end of the motor 217, and the expansion device is located in the transmission gear sleeve 218. The output end of the motor 217 and the transmission gear sleeve 218 are on the same axis. When the motor 217 rotates, the electric expansion device is activated to start expanding, so that the motor 217 and the transmission gear sleeve 218 are relatively fixed. When the relative fixation of the motor 217 and the transmission gear sleeve 218 is no longer required, the electric expansion device is reset.

[0049] When the guide block 25 on the movable plate 26 slides to the end of the guide groove 24 close to the outer ring of the fixed base 23, the movable plate 26 will not abut against the fixed base 23;

[0050] Before the pre-treated copper tube is pulled through the die hole of the drawing die 12, the motor 217 is started. Through the expansion of the electric expansion device, the motor 217 and the transmission gear sleeve 218 remain relatively fixed, so that the transmission gear sleeve 218 rotates and drives the guide gear 1 214 to rotate, thereby driving the rotating annular plate 28 to rotate synchronously and causing the torsion spring 215 to elastically contract. The rotation of the rotating annular plate 28 will push the guide column 27 to drive the movable plate 26 to move under the guidance of the arc groove 29 and the guide groove 24, so that the guide block 25 on the movable plate 26 slides in the guide groove 24, thereby driving the movable plate 26 to move, so that the multiple movable plates 26 gradually shrink, and the diameter of the quasi-annular ring formed by them gradually increases until the contact 1 on the contact column 1 219 abuts the contact 2 on the contact column 220. At this time, the motor 217 is turned off, and the multiple movable plates 26 are completely retracted, and the diameter of the quasi-annular ring formed by them is the same as the diameter of the die hole of the drawing die 12;

[0051] The pre-treated copper tube is then pulled through the die hole of the drawing die 12 and then through the quasi-annular ring formed by the multiple movable plates 26, so that the multiple second balls 211 come into contact with the surface of the drawn copper tube. Under the rolling action of the second balls 211, the drawn copper tube can pass through the inside of the quasi-annular ring formed by the multiple movable plates 26.

[0052] At this time, the clamping device 14 clamps the portion of the copper tube that passes through the multiple movable plates 26, and then drives the hydraulic telescopic rod 13 to retract, thereby pulling the copper tube;

[0053] When the copper tube is being drawn, the electric expansion device is reset. Under the elastic release of the torsion spring 215, the rotating annular plate 28 is reset, causing the multiple movable plates 26 to move toward the middle of the fixed base 23 until the first ball 210 or the second ball 211 on the movable plate 26 abuts against the drawn copper tube. At this time, the first contact on the first contact post 219 and the second contact on the second contact post 220 no longer abut.

[0054] As the copper tube is drawn, the drawn copper tube passes through the quasi-annular ring formed by the multiple movable plates 26. If the diameter of the drawn copper tube is the same as the diameter of the die hole of the drawing die 12, through the above operation, the multiple movable plates 26 are completely retracted. At this time, the diameter of the drawn copper tube meets the production requirements.

[0055] If the diameter of the copper tube after drawing is different from the diameter of the die hole of the drawing die 12, so that the contact 1 on the contact column 1 219 and the contact 2 on the contact column 2 220 no longer abut each other, the hydraulic telescopic rod 13 is closed to stop its movement. At this time, the diameter of the copper tube after drawing is smaller than the diameter of the die hole of the drawing die 12, which does not meet the production requirements.

[0056] At the beginning of the present invention, multiple movable plates 26 are contracted so that the diameter of the quasi-circular ring formed by them is the same as the diameter of the die hole of the drawing die 12. Then the copper tube is drawn, and the pretreated copper tube portion passes through the quasi-circular ring formed by multiple movable plates 26, so that the contact 1 on the contact column 1 219 and the contact 2 on the contact column 2 220 no longer abut each other. As the copper tube is drawn, the drawn copper tube passes through the quasi-circular ring formed by multiple movable plates 26. If the diameter of the copper tube after drawing is different from the diameter of the die hole of the drawing die 12, so that the contact 1 on the contact column 1 219 and the contact 2 on the contact column 2 220 no longer abut each other, it is detected that the diameter of the copper tube after drawing is smaller than the diameter of the die hole of the drawing die 12, and does not meet the production requirements.

[0057] like Figure 2 and Figures 7 to 9 As shown, in this embodiment, a cutting assembly is provided between the drawing die 12 and the detection assembly. The cutting assembly includes a cutting block 32. A cutter 34 is slidably provided at one end of the cutting block 32. When the contact post 1 219 and the contact post 2 220 are no longer in contact, the cutter 34 is moved so as to be inserted into the cutting block 32 to cut the copper tube therebetween.

[0058] The cutting assembly also includes a fixed rod 31, which is fixed to the inner wall of one side of the drawing die 12, one end of the fixed rod 31 is fixed to the cutting block 32, and the inner wall of the other side of the drawing die 12 is fixedly connected to an electric telescopic rod 33, the output end of the electric telescopic rod 33 is fixed to one end of a cutter 34, one side of the cutter 34 is symmetrically fixedly connected to a rack 1 35, one side of the cutting block 32 is symmetrically fixedly connected to a limiting column 36, the surface of the limiting column 36 is rotatably connected to a guide gear 2 37, and one side of the cutting block 32 is symmetrically provided with a limiting groove 38, and a rack 2 39 is slidably connected in the limiting groove 38;

[0059] There is a connecting rod 310 between the two racks 35 and between the two racks 39. The two connecting rods 310 are symmetrically arranged with the axis of the die hole of the drawing die 12 as the center. A rectangular groove 311 is opened in the middle of each connecting rod 310, and a rectangular rod 312 is slidably connected in the rectangular groove 311. One end of the rectangular rod 312 is fixedly connected to the arc plate 314, and the other end of the rectangular rod 312 is fixedly connected to the connecting rod 310 with a return spring 313.

[0060] Specifically, initially, the grooving block 32 and the electric telescopic rod 33 do not block the movement of the copper tube. The size of the upper semicircular arc of the grooving block 32 is the same as the size of the die hole of the drawing die 12. The two arc-shaped plates 314 do not come into contact with the copper tube, and the return spring 313 is not deformed.

[0061] When the contact 1 on the contact post 1 219 and the contact 2 on the contact post 2 220 are no longer in contact, the hydraulic telescopic rod 13 stops moving and no longer pulls the copper tube. The electric telescopic rod 33 is then activated to extend its output end, causing the rack 1 35 to move along with the cutter 34 until the cutter 34 cuts through the copper tube between the cutter 34 and the rack 1 35.

[0062] During the movement of rack 1 35 , the rotation of limit post 36 causes rack 2 39 to move toward cutter 34 , driving connecting rod 310 to move synchronously. During the movement of connecting rod 310 , arc plate 314 first abuts against the drawn copper tube. At this time, cutter 34 has not yet cut the copper tube between cutter 34 and rack 1 35 .

[0063] As the connecting rod 310 continues to move, the rectangular rod 312 moves and elastically stretches the return spring 313, and then fixes the copper tube through the two arc-shaped plates 314, thereby improving the stability of the copper tube when being cut, so that the copper tube with a diameter smaller than the die hole of the mold will not deviate during cutting, ensuring that the copper tube in the die hole of the drawing die 12 will not bend, and facilitating the next operation;

[0064] After the cutter 34 cuts the copper tube between the cutter 34 and the rack 1 35 , the clamping device 14 no longer clamps this section of the copper tube, and this section of the copper tube is taken out, and the drawing operation is performed again after the hydraulic telescopic rod 13 is repaired.

[0065] When the contact 1 on the contact post 1 219 and the contact 2 on the contact post 2 220 no longer abut each other, the output end of the electric telescopic rod 33 is extended by the electric telescopic rod 33, so that the rack 1 35 moves together with the cutter 34, and in the process of the movement of the rack 1 35, the rotation of the limit post 36 causes the rack 2 39 to move in the direction close to the cutter 34, driving the connecting rod 310 to move synchronously. During the movement of the connecting rod 310, the arc plate 314 first abuts against the drawn copper tube. At this time, the cutter 34 has not cut the copper tube between the cutter 34 and the rack 1 35. As the connecting rod 310 continues to move, the rectangular rod 312 moves and elastically stretches the return spring 313 until the cutter 34 cuts off the copper tube between the cutter 34 and the rack 1 35, so that the copper tube with a diameter smaller than the die hole of the mold is cut, which is convenient for the next operation and ensures that the copper tube will not be offset during cutting, so that the copper tube in the die hole of the drawing mold 12 will not be bent during cutting.

[0066] Working principle:

[0067] Before the pre-treated copper tube is pulled through the die hole of the drawing die 12, the motor 217 is started. Through the expansion of the electric expansion device, the motor 217 and the transmission gear sleeve 218 remain relatively fixed, so that the transmission gear sleeve 218 rotates and drives the guide gear 1 214 to rotate, thereby driving the rotating annular plate 28 to rotate synchronously and causing the torsion spring 215 to elastically contract. The rotation of the rotating annular plate 28 will push the guide column 27 to drive the movable plate 26 to move under the guidance of the arc groove 29 and the guide groove 24, so that the guide block 25 on the movable plate 26 slides in the guide groove 24, thereby driving the movable plate 26 to move, so that the multiple movable plates 26 gradually shrink, and the diameter of the quasi-annular ring formed by them gradually increases until the contact 1 on the contact column 1 219 abuts the contact 2 on the contact column 220. At this time, the motor 217 is turned off, and the multiple movable plates 26 are completely retracted, and the diameter of the quasi-annular ring formed by them is the same as the diameter of the die hole of the drawing die 12;

[0068] The pre-treated copper tube is then pulled through the die hole of the drawing die 12 and then through the quasi-annular ring formed by the multiple movable plates 26, so that the multiple second balls 211 come into contact with the surface of the drawn copper tube. Under the rolling action of the second balls 211, the drawn copper tube can pass through the inside of the quasi-annular ring formed by the multiple movable plates 26.

[0069] At this time, the clamping device 14 clamps the portion of the copper tube that passes through the multiple movable plates 26, and then drives the hydraulic telescopic rod 13 to retract, thereby pulling the copper tube;

[0070] When the copper tube is being drawn, the electric expansion device is reset. Under the elastic release of the torsion spring 215, the rotating annular plate 28 is reset, causing the multiple movable plates 26 to move toward the middle of the fixed base 23 until the first ball 210 or the second ball 211 on the movable plate 26 abuts against the drawn copper tube. At this time, the first contact on the first contact post 219 and the second contact on the second contact post 220 no longer abut.

[0071] As the copper tube is drawn, the drawn copper tube passes through the quasi-annular ring formed by the multiple movable plates 26. If the diameter of the drawn copper tube is the same as the diameter of the die hole of the drawing die 12, through the above operation, the multiple movable plates 26 are completely retracted. At this time, the diameter of the drawn copper tube meets the production requirements.

[0072] If the diameter of the copper tube after drawing is different from the diameter of the die hole of the drawing die 12, so that the contact 1 on the contact column 219 and the contact 2 on the contact column 220 no longer abut each other, the hydraulic telescopic rod 13 is closed to stop its movement. At this time, the diameter of the copper tube after drawing is smaller than the diameter of the die hole of the drawing die 12, which does not meet the production requirements.

[0073] When the contact 1 on the contact post 1 219 and the contact 2 on the contact post 2 220 are no longer in contact, the hydraulic telescopic rod 13 stops moving, and the copper tube is no longer pulled. The electric telescopic rod 33 is started to extend its output end, causing the rack 1 35 to move along with the cutter 34.

[0074] During the movement of rack 1 35 , the rotation of limit post 36 causes rack 2 39 to move toward cutter 34 , driving connecting rod 310 to move synchronously. During the movement of connecting rod 310 , arc plate 314 first abuts against the drawn copper tube. At this time, cutter 34 has not yet cut the copper tube between cutter 34 and rack 1 35 .

[0075] As the connecting rod 310 continues to move, the rectangular rod 312 moves and elastically stretches the return spring 313, thereby fixing the copper tube through the two arc-shaped plates 314 until the cutter 34 cuts the copper tube between the cutter 34 and the rack 1 35, at which time the electric telescopic rod 33 stops extending;

[0076] After the cutter 34 cuts the copper tube between the cutter 34 and the rack 1 35 , the clamping device 14 no longer clamps this section of the copper tube, and this section of the copper tube is taken out, and the drawing operation is performed again after the hydraulic telescopic rod 13 is repaired.

[0077] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper alloy production drawing device, comprising a drawing die (12), characterized in that: One end of the drawing die (12) is provided with a detection assembly, and the detection assembly includes a fixed plate (22), a plurality of movable plates (26) are slidably provided in the fixed plate (22), one end of the fixed plate (22) is fixedly connected to a support frame (216), an inner wall of the support frame (216) is fixedly provided with a contact column (219), one end of the plurality of movable plates (26) is rotatably connected to a rotating annular plate (28), and one end of the rotating annular plate (28) is fixedly provided with a concave annular sleeve (213) ), the concave annular sleeve (213) is composed of a short arc ring, a long arc ring and a wide arc ring, one end of the wide arc ring is fixedly connected to a guide gear 1 (214), and one end of the guide gear 1 (214) is provided with a contact column 2 (220). When the drawn copper tube passes through the inner part of the quasi-annular ring composed of a plurality of movable plates (26), if the diameter of the copper tube is lower than the diameter of the die hole of the drawing die (12), the plurality of movable plates (26) slide, and the contact column 1 (219) and the contact column 2 (220) no longer abut each other; The detection assembly also includes an L-shaped bracket (21), one end of the L-shaped bracket (21) is fixed to one end of the drawing die (12), and the other end is fixed to the top of the fixed plate (22), a fixed base (23) is fixedly connected in the fixed plate (22), a plurality of guide grooves (24) are provided at one end of the fixed base (23), a guide block (25) is slidably connected in each guide groove (24), one end of each guide block (25) is slidably connected to a movable plate (26), one end of each movable plate (26) is fixedly connected to a guide column (27), a plurality of arc grooves (29) are provided in the rotating annular plate (28), and a guide column (27) slides in each arc groove (29); The long arc ring is fixed at one end close to the outer ring of the wide arc ring, and the short arc ring is fixed at one end close to the inner ring of the wide arc ring. The short arc ring and the long arc ring are at the same end. A rotation groove (212) is provided at one end of the fixed base (23), the long arc ring slides in the rotation groove (212), the short arc ring is fixed to one end of the rotating circular plate (28), a torsion spring (215) is fixedly connected between the surface of the wide arc ring and the inner wall of the fixed plate (22), a motor (217) is fixedly connected to the support frame (216), and a transmission gear sleeve (218) is rotatably connected to one end of the fixed plate (22), and the transmission gear sleeve (218) is meshed with a guide gear (214).

2. A copper alloy production drawing device according to claim 1, characterized in that: A plurality of ball bearings (211) are rollingly connected to one side of each movable plate (26), and a ball bearing (210) is rollingly connected to one end of each movable plate (26) near the middle of the fixed plate (22). When the drawn copper tube passes through the inside of the quasi-circular ring formed by the plurality of movable plates (26), the drawn copper tube can pass through the inside of the quasi-circular ring formed by the plurality of movable plates (26) through the rolling of ball bearings (210) and ball bearings (211).

3. A copper alloy production drawing device according to claim 2, characterized in that: The contact column 1 (219) is composed of a cylinder 1 and a contact 1, and the contact column 2 (220) is composed of a cylinder 2 and a contact 2. The contact 1 and the contact 2 are fixed to one end of the cylinder 1 and the cylinder 2 respectively. The other end of the cylinder 1 is fixed to the inner wall of the support frame (216), and the other end of the cylinder 2 is fixed to one end of the guide gear 1 (214). The contact column 1 (219) and the ball 1 (210) are arranged opposite to each other. When the guide gear 1 (214) rotates, the contact column 1 (219) will abut against the contact column 2 (220).

4. A copper alloy production drawing device according to claim 1, characterized in that: The inner annular surface of the fixed base (23) and the die hole of the drawing die (12) are on the same axis, and the diameter of the inner annular surface of the fixed base (23) is the same as the diameter of the die hole of the drawing die (12). When the multiple movable plates (26) are fully retracted, the diameter of the quasi-circular ring formed by the multiple movable plates (26) is the same as the diameter of the inner annular surface of the fixed base (23).

5. The copper alloy production drawing device according to claim 1, characterized in that: A cutting assembly is provided between the drawing die (12) and the detection assembly, and the cutting assembly includes a cutting block (32). A cutter (34) is slidably provided at one end of the cutting block (32). When the contact column 1 (219) and the contact column 2 (220) are no longer in contact, the cutter (34) is moved so as to be inserted into the cutting block (32) to cut the copper tube therebetween.

6. A copper alloy production drawing device according to claim 5, characterized in that: The cutting assembly further comprises a fixed rod (31), wherein the fixed rod (31) is fixed to an inner wall of one side of the drawing die (12), one end of the fixed rod (31) is fixed to a cutting block (32), and an electric telescopic rod (33) is fixedly connected to the inner wall of the other side of the drawing die (12), and the output end of the electric telescopic rod (33) is fixed to one end of a cutter (34), and one side of the cutter (34) is symmetrically fixedly connected to a rack 1 (35), and one side of the cutting block (32) is symmetrically fixedly connected to a limiting column (36), and the surface of the limiting column (36) is rotatably connected to a guide gear 2 (37), and a limiting groove (38) is symmetrically provided on one side of the cutting block (32), and a rack 2 (39) is slidably connected in the limiting groove (38).

7. A copper alloy production drawing device according to claim 6, characterized in that: There is a connecting rod (310) between the two racks (35) and between the two racks (39). The two connecting rods (310) are symmetrically arranged with the die hole axis of the drawing die (12) as the center. A rectangular groove (311) is opened in the middle of each connecting rod (310). A rectangular rod (312) is slidably connected in the rectangular groove (311). One end of the rectangular rod (312) is fixedly connected to an arc plate (314), and a return spring (313) is fixedly connected between the other end of the rectangular rod (312) and the connecting rod (310).

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