Gold wire automatic feeding precision fixed length cutting equipment

Abstract

The present invention discloses a gold wire automatic feeding precision fixed-length cutting equipment, including an automatic feeder and a punching machine, characterized in that the automatic feeder and the punching machine are both placed on the ground, the punching machine is placed at the end of the automatic feeder, the punching machine receives the gold wire sent by the automatic feeder and cuts the gold wire; the automatic feeder includes a feeder frame placed on the ground, a discharge tray, a gold wire pulling assembly, at least one gold wire left and right guide assembly, a gold wire upper and lower guide assembly and a wire feeding device. Advantages: In this equipment, the automatic feeder, the punching machine and the punching die form a unified equipment as a whole, multiple turns of coiled wire are hung on the freely rotating discharge tray, enter multiple sets of guide wheels through the directional gold wire pulling assembly, and finally enter the wire feeding device, and are fed into the punching die at a fixed length to complete the punching, and this reciprocating cycle is bad, the production efficiency is extremely high, the cross section is neat, the length is consistent, and the product quality is reliable.

Description

Technical Field

[0001] The invention relates to gold wire automatic feeding and precise fixed-length cutting equipment, belonging to the technical field of material forming in processing engineering. Background Art

[0002] At present, the domestic production of evaporated gold particles mostly adopts ordinary punching and lathe cutting. The above methods mainly rely on manual delivery of gold and platinum wire or intermittent pushing of ejector rods, which have low production efficiency, low dimensional accuracy, and difficulty in controlling the uniformity of single particle weight, which ultimately affects the quality of semiconductor chip PVD coating. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in the background technology, the manufacturing process of evaporated gold particles relies on manual delivery of gold and platinum wire or intermittent pushing of a push rod, resulting in low production efficiency, low dimensional accuracy and difficulty in controlling the uniformity of single particle weight.

[0004] The purpose of the present invention is to provide a wire material automatic feeding precision fixed length cutting equipment capable of manufacturing gold or platinum particles for semiconductor back gold. The technical scheme is: a gold wire automatic feeding precision fixed length cutting equipment, comprising an automatic feeder and a punching machine, the automatic feeder and the punching machine are both placed on the ground, the punching machine is placed at the end of the automatic feeder, the punching machine receives the gold wire sent by the automatic feeder and cuts the gold wire;

[0005] The automatic feeder includes a feeder frame placed on the ground, a discharge tray, a gold wire pulling assembly, at least one gold wire left and right guide assembly, a gold wire upper and lower guide assembly and a wire feeding device. The discharge tray, the gold wire pulling assembly, the gold wire left and right guide assembly, the gold wire upper and lower guide assembly and the wire feeding device are all installed on the table of the feeder frame and arranged along the length direction of the table, and the discharge tray and the wire feeding device are installed at both ends of the table; the gold wire pulling assembly, the gold wire left and right guide assembly and the gold wire upper and lower guide assembly are all located between the discharge tray and the wire feeding device, the gold wire pulling assembly is close to the discharge tray, the gold wire upper and lower guide assembly is close to the wire feeding device, the gold wire reel is sleeved on the discharge tray, and the gold wire pulled out from the gold wire reel passes through the discharge tray, the gold wire pulling assembly, the gold wire left and right guide assembly, the gold wire upper and lower guide assembly and the wire feeding device in sequence and finally enters the punching machine;

[0006] The wire feeding device includes an upper gear unit, a lower gear unit, an adjustment locking handle and a feeding motor. The lower gear unit is fixed on the feeder frame table. The upper gear unit swings and matches with the lower gear unit. A wire feeding channel for feeding gold wire is formed between the upper gear unit and the lower gear unit. The adjustment locking handle swings and is mounted on the lower gear unit and presses the upper gear unit against the lower gear unit. The feeding motor provides power to the lower gear unit to drive the gold wire into the punching machine.

[0007] The lower gear assembly unit includes a lower support frame, three first gears, a first pressure wheel and two first V-groove wheels. The lower support frame is vertically mounted on the feeder frame table. The three first gears are mounted on the lower support frame through gear shafts. The three first gears are arranged in a straight line and the first gear in the middle is meshed with the first gears on both sides at the same time. The first gear in the middle is defined as the driving gear, and the first gears on both sides are defined as the driven gear; the first pressure wheel is coaxially mounted with the driving gear, and the two first V-groove wheels are coaxially mounted with the two driven gears respectively;

[0008] The feeding motor is installed on the feeding machine frame table, and the motor shaft of the feeding motor is connected to the gear shaft of the driving gear through a coupling;

[0009] The upper gear assembly unit includes a pressure cover plate, a gear mounting plate, two second gears, a second V-groove wheel and two second pressure wheels. The two second gears and the second V-groove wheel are mounted on the gear mounting plate through a gear shaft. The two second gears and the second V-groove wheel are arranged in a straight line and the second V-groove wheel is located between the two second gears. The two second pressure wheels are respectively coaxially mounted with the two second gears; the gear mounting plate is fixed to the pressure cover plate, one side of the pressure cover plate is hinged to one side of the lower support frame, the pressure cover plate is rotated so that the other side of the pressure cover plate fits with the other side of the lower support frame, the adjustment locking handle is hinged to the other side of the lower support frame, and when the other side of the pressure cover plate fits with the other side of the lower support frame, the adjustment locking handle is rotated to a vertical position and the adjustment locking handle is rotated to tighten the pressure cover plate;

[0010] When the other side of the gland plate fits with the other side of the lower support frame, the two second gears mesh with the two driven gears respectively, and the two second pressing wheels are respectively located directly above the two first V-groove wheels, and the second V-groove wheels are located directly above the first pressing wheels;

[0011] A punching die is installed on the punching machine. The punching die includes an upper die and a lower die, which are installed on the main spindle end of the punching machine. The upper die is provided with a punching blade; the lower die includes a bottom die fixing plate, a punching bottom die, a limit stopper and a stopper reset spring. A punching hole is provided on the bottom die fixing plate, and the punching blade moves up and down along the punching hole to cut the gold wire. A transverse mounting hole perpendicular to the punching hole is opened on the bottom die fixing plate, and the transverse mounting hole is divided into two sections by the punching hole. The punching bottom die is installed in one section, and the limit stopper and the stopper reset spring are installed in the other section; the limit stopper and the stopper reset spring are installed in the transverse mounting hole through a screw plug, and a gold wire channel for the gold wire to penetrate is arranged axially on the punching bottom die.

[0012] In the preferred embodiment of the technical solution of the present invention, there are two left and right guide assemblies for the gold wire, and both of them are located between the gold wire pulling assembly and the gold wire upper and lower guide assembly, one left and right guide assembly for the gold wire is close to the gold wire pulling assembly, and the other left and right guide assembly for the gold wire is close to the gold wire upper and lower guide assembly. The purpose of setting up the two left and right guide assemblies for the gold wire and arranging their specific positions is to ensure the straightness of the gold wire, and to avoid the long-distance sagging of the gold wire, multiple left and right guide assemblies for the gold wire can be set.

[0013] Preferably, the left and right guide assemblies of the gold wire include a third V-groove wheel fixed in a position and a third pressure wheel movably arranged in a position, the third V-groove wheel is horizontally arranged on a base plate through a gate-type bracket, the base plate is fixed on the table top of the feeder frame, the axle of the third V-groove wheel is vertically fixed on the top end face of the gate-type bracket, the axle of the third pressure wheel is vertically fixed on the top surface of the slide plate, the third V-groove wheel is flush with the third pressure wheel, the slide plate slides on the guide rail, the guide rail is fixed on the base plate, vertical plates are arranged at both ends of the guide rail, the two vertical plates are arranged in parallel, a cross bar is fixed between the two vertical plates, the cross bar passes through the slide plate, a spring is mounted on the cross bar, one end of the spring presses the slide plate, and the other end presses the vertical plate away from the third pressure wheel.

[0014] In the preferred embodiment of the technical solution of the present invention, the gold wire pulling assembly includes a "U"-shaped bracket, an upper roller and a lower roller. The "U"-shaped bracket is vertically mounted on the table of the feeder frame. The upper roller and the lower roller are arranged in parallel and both ends are fixed on the left and right vertical plates of the "U"-shaped bracket. A gold wire channel is left between the upper roller and the lower roller for the gold wire to pass through. The purpose of setting the gold wire pulling assembly is to guide the gold wire 13 pulled out from the gold wire reel into the gold wire left and right guide assembly 3, the gold wire upper and lower guide assembly 4 and the wire feeding device 5 to prevent the gold wire in the gold wire left and right guide assembly 3 from slipping off.

[0015] Preferably, the upper and lower guide components of the gold wire include a base plate, a vertical plate, a fourth V-groove wheel and a fourth pressure wheel. The base plate is fixed on the table top of the feeder frame, the vertical plate is fixed on the base plate, the fourth V-groove wheel and the fourth pressure wheel are both installed on the vertical plate through the wheel axle, the fourth V-groove wheel is located below the fourth pressure wheel and the wheel axles of the fourth V-groove wheel and the fourth pressure wheel are located on the same straight line, the fourth V-groove wheel and the fourth pressure wheel are in fit, and the gold wire penetrates into the V-groove of the fourth V-groove wheel.

[0016] In the preferred embodiment of the technical solution of the present invention, two wire sleeves are symmetrically embedded at both ends of the lower support frame of the lower gear unit in the wire feeding device. The two wire sleeves are provided to guide the gold wire into the wire feeding channel of the wire feeding device and to help the gold wire enter the punching machine.

[0017] Preferably, the gold wire automatic feeding and precision fixed-length cutting equipment also includes a control system, which includes a PLC, a photoelectric displacement sensor, a punching machine control system, a feeding motor and a magnetic sensor. The PLC is electrically connected to the feeding motor, and the PLC provides an action signal of the feeding amount to the feeding motor; the photoelectric displacement sensor is electrically connected to the PLC, and the photoelectric displacement sensor feeds back the gold wire feeding amount to the PLC. When the feeding amount reaches the set value, the PLC sends a stop command to the feeding motor; the PLC is electrically connected to the punching machine control system, and after receiving the gold wire feeding amount fed back by the photoelectric displacement sensor, the PLC sends an action command to the punching machine control system, and the punching blade on the punching machine acts to cut the gold wire; the magnetic sensor is electrically connected to the PLC, and when the punching blade returns to the set position after cutting, the magnetic sensor transmits a signal to the PLC, and the PLC provides an action signal of the feeding amount to the feeding motor.

[0018] In a preferred embodiment of the technical solution of the present invention, the measuring head of the photoelectric displacement sensor is installed on the upper and lower guide components of the gold wire through a sensor bracket, and the measuring head points to the gold wire.

[0019] Preferably, the crankshaft of the punching machine is connected to the blade fixing plate of the upper die through a slider, a steel sheet that interacts with the magnetic sensor is fixed on the top of the crankshaft, and the measuring head of the magnetic sensor is installed on the casing at the top of the crankshaft through a sensor bracket; when the crankshaft moves and the punching blade returns, when the steel sheet and the magnetic sensor reach the effective range, the contacts of the magnetic sensor are turned on to generate a signal, and the magnetic sensor transmits the signal to the PLC.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The gold wire automatic feeding and precise fixed-length cutting equipment of the present invention, the automatic feeder, the punching machine and the punching die form a unified equipment as a whole, multiple turns of coiled wire are hung on the freely rotating discharge plate, and enter multiple sets of guide wheels through the directional gold wire traction assembly, and finally enter the wire feeding device, and are fed into the punching die at a fixed length to complete the punching, and this reciprocating cycle has extremely high production efficiency, neat cross-section, consistent length, and reliable product quality.

[0022] 2. The economic benefits brought by the gold wire automatic feeding and precision fixed-length cutting equipment of the present invention. At present, the semiconductor chip industry at home and abroad is developing rapidly, and a large amount of coating materials are needed. The use of PVD vapor deposition coating (back gold) is the most ideal process method so far. my country's demand for chip evaporation back gold is in an upward stage, and the supply of high-quality coating precious metal materials is still insufficient. The production efficiency of the gold wire automatic feeding and precision fixed-length cutting equipment will be greatly improved, and the annual production capacity of the product is expected to reach 1,000 kilograms; according to the current market conditions, the annual output value can reach 300 million yuan, and the profit is several million yuan, which has good economic and social benefits. The product starting point of this technology is high and it is at the advanced level of the domestic industry. It will be able to enhance the supply capacity of my country's chip coating products, promote the further development of the industry, and improve the industry's product quality and market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the front view of the first embodiment.

[0024] Figure 2 It is a three-dimensional structural diagram of the automatic feeder.

[0025] Figure 3 yes Figure 2 main view.

[0026] Figure 4 yes Figure 2 Top view of the .

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the left and right guide components of the gold wire.

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the wire feeding device.

[0029] Figure 7 yes Figure 6 main view.

[0030] Figure 8 yes Figure 1 Enlarged view of point A in the figure. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is described in detail below, but the protection scope of the present invention is not limited to the embodiments.

[0032] To make the content of the present invention more clearly understood, the following Figure 1-Figure 8 The specific implementation manner is further described.

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] Example 1

[0035] like Figure 1 As shown, the gold wire automatic feeding and precision fixed-length cutting equipment includes an automatic feeder and a punching machine. The automatic feeder and the punching machine 7 are both placed on the ground. The punching machine 7 is placed at the end of the automatic feeder. The punching machine 7 receives the gold wire sent by the automatic feeder and cuts the gold wire 13.

[0036] like Figure 2 , 3 As shown in FIG. 4 , the automatic feeder includes a feeder frame 6 placed above the ground, a discharge tray 1 , a gold wire pulling assembly 2 , at least one gold wire left and right guide assembly 3 , a gold wire upper and lower guide assembly 4 and a wire feeding device 5 .

[0037] like Figure 2 and 3 As shown, the discharge tray 1, the gold wire pulling assembly 2, the gold wire left and right guide assembly 3, the gold wire upper and lower guide assembly 4 and the wire feeding device 5 are all installed on the table of the feeder frame 6 and arranged along the length direction of the table, and the discharge tray 1 and the wire feeding device 5 are installed at both ends of the table; the gold wire pulling assembly 2, the gold wire left and right guide assembly 3 and the gold wire upper and lower guide assembly 4 are all located between the discharge tray 1 and the wire feeding device 5, the gold wire pulling assembly 2 is close to the discharge tray 1, the gold wire upper and lower guide assembly 4 is close to the wire feeding device 5, the gold wire reel is sleeved on the discharge tray 1, and the gold wire 13 pulled out from the gold wire reel passes through the discharge tray 1, the gold wire pulling assembly 2, the gold wire left and right guide assembly 3, the gold wire upper and lower guide assembly 4 and the wire feeding device 5 in sequence and finally enters the punching machine 7.

[0038] like Figure 2 and 3 As shown, there are two gold wire left and right guide assemblies 3, both of which are located between the gold wire pulling assembly 2 and the gold wire up and down guide assembly 4, one gold wire left and right guide assembly 3 is close to the gold wire pulling assembly 2, and the other gold wire left and right guide assembly 3 is close to the gold wire up and down guide assembly 4. The purpose of setting the two gold wire left and right guide assemblies 3 and arranging the specific positions is to ensure the straightness of the gold wire, and to prevent the gold wire from sagging over a long distance, multiple gold wire left and right guide assemblies can be set.

[0039] like Figure 5As shown, the left and right gold wire guide components 3 include a third V-groove wheel 31 which is fixed in position and a third pressure wheel 32 which is movably arranged in position. The third V-groove wheel is horizontally arranged on a base plate 34 through a gate-type bracket 33. The base plate 34 is fixed on the table top of the feeder frame 6. The axle of the third V-groove wheel is vertically fixed on the top end face of the gate-type bracket. The axle of the third pressure wheel is vertically fixed on the top face of the slide plate 35. The third V-groove wheel is flush with the third pressure wheel. The slide plate slides on a guide rail 36 which is fixed on the base plate. Vertical plates 37 are arranged at both ends of the guide rail. The two vertical plates are arranged in parallel. A cross bar 38 is fixed between the two vertical plates. The cross bar passes through the slide plate. A spring 39 is sleeved on the cross bar. One end of the spring presses against the slide plate, and the other end presses against the vertical plate away from the third pressure wheel.

[0040] When the gold wire left and right guide assembly 3 is in use, the slide plate 35 is pushed by hand to slide, so that the third pressure wheel 32 leaves the third V-groove wheel 31, and the gold wire 13 comes in and is stuck in the V-groove of the third V-groove wheel 31. The slide plate 35 is released, and the spring 39 moves the slide plate 35 so that the third pressure wheel 32 is close to the third V-groove wheel 31, and the gold wire 13 is stuck in the V-groove of the third V-groove wheel 31 to prevent the gold wire 13 from slipping.

[0041] like Figure 2 and 3 As shown, the gold wire pulling assembly 2 includes a "U"-shaped bracket, an upper roller and a lower roller. The "U"-shaped bracket is vertically mounted on the table of the feeder frame 6. The upper roller and the lower roller are arranged in parallel and both ends are fixed on the left and right vertical plates of the "U"-shaped bracket. A gold wire channel is left between the upper roller and the lower roller for the gold wire 13 to pass through. The purpose of setting the gold wire pulling assembly 2 is to guide the gold wire 13 pulled out from the gold wire reel into the gold wire left and right guide assembly 3, the gold wire upper and lower guide assembly 4 and the wire feeding device 5 to prevent the gold wire in the gold wire left and right guide assembly 3 from slipping off.

[0042] like Figure 3 As shown, the gold wire upper and lower guide assembly 4 includes a base plate, a vertical plate, a fourth V-groove wheel and a fourth pressure wheel. The base plate is fixed on the table top of the feeder frame 6, the vertical plate is fixed on the base plate, the fourth V-groove wheel and the fourth pressure wheel are both installed on the vertical plate through the wheel axle, the fourth V-groove wheel is located below the fourth pressure wheel and the wheel axles of the fourth V-groove wheel and the fourth pressure wheel are located on the same straight line, the fourth V-groove wheel and the fourth pressure wheel are in contact, and the gold wire 13 is inserted into the V-groove of the fourth V-groove wheel.

[0043] like Figure 6 and 7As shown, the wire feeding device 5 includes an upper gear set unit 53, a lower gear set unit 54, an adjustment locking handle 51 and a feeding motor 52. The lower gear set unit 54 is fixed on the table of the feeder frame 6 through a base plate 55. The upper gear set unit 53 is swung to engage with the lower gear set unit 54. A wire feeding channel for feeding the gold wire 13 is formed between the upper gear set unit 53 and the lower gear set unit 54. The adjustment locking handle 51 is swung to be installed on the lower gear set unit 54 and presses the upper gear set unit 53 onto the lower gear set unit 54. The feeding motor 52 provides power to the lower gear set unit 54 to drive the gold wire 13 into the punching machine.

[0044] like Figure 7 As shown, the lower gear group unit 54 includes a lower support frame 54-1, three first gears, a first pressure wheel and two first V-groove wheels. The lower support frame 54-1 is vertically installed on the table of the feeder frame 6. The three first gears are mounted on the lower support frame 54-1 through gear shafts. The three first gears are arranged in a straight line and the first gear in the middle is meshed with the first gears on both sides at the same time. The first gear in the middle is defined as the driving gear, and the first gears on both sides are defined as the driven gear; the first pressure wheel is coaxially installed with the driving gear, and the two first V-groove wheels are coaxially installed with the two driven gears respectively.

[0045] The feeding motor 52 is installed on the table of the feeder frame 6, and the motor shaft of the feeding motor 52 is connected to the gear shaft of the driving gear through a coupling.

[0046] The upper gear assembly unit 53 includes a pressure cover plate 53-1, a gear mounting plate 53-2, two second gears, a second V-groove wheel and two second pressure wheels. The two second gears and the second V-groove wheel are mounted on the gear mounting plate through a gear shaft. The two second gears and the second V-groove wheel are arranged in a straight line and the second V-groove wheel is located between the two second gears. The two second pressure wheels are coaxially mounted with the two second gears respectively; the gear mounting plate is fixed on the pressure cover plate 53-1, and one side of the pressure cover plate 53-1 is hinged to one side of the lower support frame 54-1. The pressure cover plate 53-1 is rotated so that the other side of the pressure cover plate 53-1 is in contact with the other side of the lower support frame 54-1. The adjusting locking handle 51 is hinged to the other side of the lower support frame 54-1. When the other side of the pressure cover plate 53-1 is in contact with the other side of the lower support frame 54-1, the adjusting locking handle 51 is rotated to a vertical position and the adjusting locking handle 51 is rotated to press the pressure cover plate 53-1.

[0047] When the other side of the pressure cover plate 53-1 is in contact with the other side of the lower support frame 54-1, the two second gears are respectively meshed with the two driven gears, and the two second pressure wheels are respectively located directly above the two first V-groove wheels, and the second V-groove wheels are located directly above the first pressure wheels.

[0048] like Figure 7As shown, two wire sleeves 54-2 are symmetrically embedded at both ends of the lower support frame 54-1 of the lower gear unit 54 in the wire feeding device 5. The purpose of setting the two wire sleeves 54-2 is to guide the gold wire into the wire feeding channel of the wire feeding device 5 and to help the gold wire enter the punching machine.

[0049] The feeding motor 52 is powered on, and the feeding motor 52 rotates. The three first gears and the two second gears rotate at the same time. The gold wire 13 passes through the wire sleeve 54-2 and enters the V-groove of the first V-groove wheel. The second pressing wheel presses the gold wire 13 into the V-groove of the first V-groove wheel to prevent it from slipping. The rotation of the gear drives the gold wire 13 to enter the V-groove of the second V-groove wheel, and then into the V-groove of the first V-groove wheel, and finally is fed into the punching machine 7 by the wire sleeve 54-2.

[0050] In the wire feeding device 5 of Example 1, due to the design of the installation positions of the first V-groove wheel, the second V-groove wheel and the first V-groove wheel (the two first V-groove wheels are at the bottom, and the second V-groove wheel is located between the two first V-groove wheels and above the two first V-groove wheels), the gold wire 13 will undergo a very small angle change when passing through the first V-groove wheel, the second V-groove wheel and the first V-groove wheel in sequence, making the gold wire tough.

[0051] like Figure 1 and 8 As shown, a punching die is installed on the punching machine 7, and the punching die includes an upper die and a lower die, which are installed on the main shaft end of the punching machine 7. The upper die is provided with a punching blade 8; the lower die includes a bottom die fixing plate 9, a punching bottom die 10, a limit stopper 11 and a stopper reset spring 12. A punching hole is provided on the bottom die fixing plate 9, and the punching blade 8 moves up and down along the punching hole to cut off the gold wire 13. A transverse mounting hole perpendicular to the punching hole is opened on the bottom die fixing plate 9, and the transverse mounting hole is divided into two sections by the punching hole, one section is filled with the punching bottom die 10, and the other section is filled with the limit stopper 11 and the stopper reset spring 12; the limit stopper 11 and the stopper reset spring 12 are installed in the transverse mounting hole through a screw plug 14, and a gold wire channel for the gold wire 13 to penetrate is axially arranged on the punching bottom die 10.

[0052] like Figure 8 As shown, in Example 1, the gold wire 13 passes through the gold wire channel, extends into the punching hole and supports the limit stopper 11. At this time, the stopper reset spring 12 is compressed, and the punching blade 8 moves downward to complete one punching. When the blade returns, the gold particles stick to the blade and move upward. Since the limit stopper 11 is quickly reset under the push of the stopper reset spring 12, the gold particles are scraped off, avoiding the feed port of the punching hole from being blocked.

[0053] The punching machine 7 in Example 1 is a known technology, and this embodiment does not provide a detailed description of its specific structure and working process.

[0054] In the first embodiment, the upper die also includes a blade fixing plate, a clamping hole is provided in the center of the blade fixing plate, and threaded through holes are provided on both sides. The upper part of the punching blade 8 is fitted into the clamping hole, and a mounting hole is provided at a position corresponding to the threaded through hole; a semicircular notch is also provided at the lower edge of the punching blade 8. When replacing and installing the punching blade 8, the screws on both sides of the blade fixing plate can be loosened or tightened. The notch diameter of the semicircular notch at the lower edge of the punching blade 8 is consistent with the diameter of the gold wire 13.

[0055] The punching machine of Example 1 has a high cutting frequency, a production efficiency many times higher than that of manual feeding, an accurate cutting length, and a smooth cross section; due to the setting of the limit stopper 11 and the stopper return spring 12, the problem of gold particles sticking to the blade and easily blocking the feed port is effectively solved.

[0056] Example 2

[0057] A control system is added on the basis of Example 1. The control system mainly involves PLC programming to achieve precise feeding and cutting. Since PLC programming is a known technology, this example does not explain the circuit and control program.

[0058] The control system includes PLC, photoelectric displacement sensor, punching machine control system, feeding motor 52 and magnetic sensor 15. PLC is electrically connected to feeding motor 52, and PLC provides feeding motor 52 with action signal of feeding amount; photoelectric displacement sensor is electrically connected to PLC, and photoelectric displacement sensor feeds back gold wire feeding amount to PLC. When feeding amount reaches set value, PLC sends stop command to feeding motor 52; PLC is electrically connected to punching machine control system. After receiving gold wire feeding amount fed back by photoelectric displacement sensor, PLC sends action command to punching machine control system, and punching blade 8 on punching machine acts to cut off gold wire 13; magnetic sensor is electrically connected to PLC, and punching blade 8 returns after cutting. When magnetic sensor receives that punching blade 8 returns to set position, magnetic sensor transmits signal to PLC, and PLC provides feeding motor 52 with action signal of feeding amount.

[0059] The measuring head of the photoelectric displacement sensor is installed on the upper and lower gold wire guide components 4 through the sensor bracket, and the measuring head points to the gold wire 13.

[0060] The crankshaft of the punching machine 7 is connected to the blade fixing plate of the upper die through a slider, and a steel sheet that interacts with the magnetic sensor 15 is fixed on the top of the crankshaft. The measuring head of the magnetic sensor is installed on the casing at the top of the crankshaft through the sensor bracket; the crankshaft moves the punching blade 8 back, and when the steel sheet and the magnetic sensor reach the effective range, the magnetic sensor contacts are turned on to generate a signal, and the magnetic sensor transmits the signal to the PLC.

[0061] The workflow of Example 2 is:

[0062] The gold wire is hung on the feeding plate, passes through the V-groove of the left and right, up and down control wheel group, and enters the V-groove of the synchronous gear group of the wire feeding device. The adjustment handle presses the gold wire, and the servo motor drives the gear to rotate and feed the material to the mold until it is pressed against the limit block; at this time, the gold wire feeding stops, and the photoelectric displacement sensor sends a signal to control the slider of the punching machine to move downward, driving the blade to complete a punching cut. When the blade returns, the gold particles stick to the blade and move upward. Because the limit block quickly resets under the push of the spring, the gold particles are scraped off, avoiding the feed port from being blocked. When the blade moves up to a certain height, the magnetic sensor sends a signal to control the servo motor to continue working and perform the next feeding and cutting operation.

[0063] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A gold wire automatic feeding precision fixed length cutting equipment, including an automatic feeder and a punching machine, characterized in that: The automatic feeder and the punching machine are both placed on the ground. The punching machine is placed at the end of the automatic feeder. The punching machine receives the gold wire sent by the automatic feeder and cuts the gold wire. The automatic feeder comprises a feeder frame (6) placed on the ground, a discharge tray (1), a wire pulling assembly (2), at least one wire left and right guide assembly (3), a wire upper and lower guide assembly (4) and a wire feeding device (5); the discharge tray (1), the wire pulling assembly (2), the wire left and right guide assembly (3), the wire upper and lower guide assembly (4) and the wire feeding device (5) are all installed on the table of the feeder frame (6) and arranged along the length direction of the table; the discharge tray (1) and the wire feeding device (5) are installed at both ends of the table; The wire guide assembly (2), the left and right wire guide assembly (3) and the upper and lower wire guide assembly (4) are all located between the discharge tray (1) and the wire feeding device (5). The wire pulling assembly (2) is adjacent to the discharge tray (1), the upper and lower wire guide assembly (4) is adjacent to the wire feeding device (5), the wire reel is sleeved on the discharge tray (1), and the wire (13) pulled out from the wire reel passes through the discharge tray (1), the wire pulling assembly (2), the left and right wire guide assembly (3), the upper and lower wire guide assembly (4) and the wire feeding device (5) in sequence and finally enters the punching machine. The wire feeding device (5) comprises an upper gear unit (53), a lower gear unit (54), an adjusting and locking handle (51) and a feeding motor (52); the lower gear unit (54) is fixed on the table of the feeder frame (6); the upper gear unit (53) is swung to engage with the lower gear unit (54); a wire feeding channel for feeding the gold wire (13) is formed between the upper gear unit (53) and the lower gear unit (54); the adjusting and locking handle (51) is swung to be mounted on the lower gear unit (54) and presses the upper gear unit (53) against the lower gear unit (54); the feeding motor (52) provides power to the lower gear unit (54) to drive the gold wire (13) into the punching machine; The lower gear assembly unit (54) comprises a lower support frame (54-1), three first gears, a first pressure wheel and two first V-groove wheels. The lower support frame (54-1) is vertically mounted on the table of the feeder frame (6). The three first gears are mounted on the lower support frame (54-1) through gear shafts. The three first gears are arranged in a straight line and the first gear in the middle is meshed with the first gears on both sides at the same time. The first gear in the middle is defined as a driving gear and the first gears on both sides are defined as driven gears. The first pressure wheel is coaxially mounted with the driving gear, and the two first V-groove wheels are coaxially mounted with the two driven gears respectively. The feeding motor (52) is mounted on the table of the feeding machine frame (6), and the motor shaft of the feeding motor (52) is connected to the gear shaft of the driving gear through a coupling; The upper gear assembly unit (53) comprises a pressure cover plate (53-1), a gear mounting plate, two second gears, a second V-groove wheel and two second pressure wheels. The two second gears and the second V-groove wheel are mounted on the gear mounting plate via a gear shaft. The two second gears and the second V-groove wheel are arranged in a straight line and the second V-groove wheel is located between the two second gears. The two second pressure wheels are respectively mounted coaxially with the two second gears. The gear mounting plate is fixed on the pressure cover plate (53-1). 53-1) is hinged to one side of the lower support frame (54-1), the cover plate (53-1) is rotated so that the other side of the cover plate (53-1) fits with the other side of the lower support frame (54-1), the locking handle (51) is adjusted to hinge to the other side of the lower support frame (54-1), and when the other side of the cover plate (53-1) fits with the other side of the lower support frame (54-1), the locking handle (51) is adjusted to rotate to a vertical position and the locking handle (51) is rotated to press the cover plate (53-1); When the other side of the pressure cover plate (53-1) is in contact with the other side of the lower support frame (54-1), the two second gears are respectively meshed with the two driven gears, the two second pressure wheels are respectively located directly above the two first V-groove wheels, and the second V-groove wheels are located directly above the first pressure wheels; A punching die is installed on the punching machine (7). The punching die includes an upper die and a lower die, which are installed on the main spindle end of the punching machine (7). The upper die is provided with a punching blade (8); the lower die includes a bottom die fixing plate (9), a punching bottom die (10), a limit stopper (11) and a stopper reset spring (12); a punching hole is provided on the bottom die fixing plate (9), and the punching blade (8) moves up and down along the punching hole to cut the gold wire (13); a transverse mounting hole perpendicular to the punching hole is opened on the bottom die fixing plate (9), and the transverse mounting hole is divided into two sections by the punching hole, one section is installed with the punching bottom die (10), and the other section is installed with the limit stopper (11) and the stopper reset spring (12); the limit stopper (11) and the stopper reset spring (12) are installed in the transverse mounting hole through a screw plug (14), and a gold wire channel for the gold wire (13) to penetrate is arranged along the axial direction on the punching bottom die (10); There are two gold wire left and right guide assemblies (3), both of which are located between the gold wire pulling assembly (2) and the gold wire up and down guide assembly (4), one gold wire left and right guide assembly (3) is adjacent to the gold wire pulling assembly (2), and the other gold wire left and right guide assembly (3) is adjacent to the gold wire up and down guide assembly (4); The left and right guide components (3) of the gold wire include a third V-groove wheel which is fixed in position and a third pressure wheel which is movably arranged in position. The third V-groove wheel is horizontally arranged on a bottom plate through a door-shaped bracket. The bottom plate is fixed on the table of the feeder frame (6). The axle of the third V-groove wheel is vertically fixed on the top end surface of the door-shaped bracket. The axle of the third pressure wheel is vertically fixed on the top surface of the slide. The third V-groove wheel is flush with the third pressure wheel. The slide slides on the guide rail which is fixed on the bottom plate. Vertical plates are arranged at both ends of the guide rail. The two vertical plates are arranged in parallel. A cross bar is fixed between the two vertical plates. The cross bar passes through the slide. A spring is sleeved on the cross bar. One end of the spring presses against the slide and the other end presses against the vertical plate away from the third pressure wheel. The gold wire pulling assembly (2) comprises a "U"-shaped bracket, an upper roller and a lower roller. The "U"-shaped bracket is vertically mounted on the table of the feeder frame (6). The upper roller and the lower roller are arranged in parallel and both ends are fixed on the left and right vertical plates of the "U"-shaped bracket. A gold wire channel is left between the upper roller and the lower roller for the gold wire (13) to pass through. The gold wire automatic feeding precision fixed-length cutting equipment also includes a control system, which includes a PLC, a photoelectric displacement sensor, a punching machine control system, a feeding motor (52) and a magnetic sensor. The PLC is electrically connected to the feeding motor (52), and the PLC provides the feeding motor (52) with an action signal of the feeding amount; the photoelectric displacement sensor is electrically connected to the PLC, and the photoelectric displacement sensor feeds back the gold wire feeding amount to the PLC. When the feeding amount reaches a set value, the PLC sends a stop command to the feeding motor (52); the PLC is electrically connected to the punching machine control system, and after receiving the gold wire feeding amount fed back by the photoelectric displacement sensor, the PLC sends an action command to the punching machine control system, and the punching blade (8) on the punching machine is actuated to cut the gold wire (13); the magnetic sensor is electrically connected to the PLC, and the punching blade (8) returns after cutting is completed. When the magnetic sensor receives that the punching blade (8) returns to a set position, the magnetic sensor transmits a signal to the PLC, and the PLC provides the feeding motor (52) with an action signal of the feeding amount; The crankshaft of the punching machine (7) is connected to the blade fixing plate of the upper die through a slider, a steel sheet that interacts with the magnetic sensor is fixed on the top of the crankshaft, and the measuring head of the magnetic sensor is installed on the casing at the top of the crankshaft through a sensor bracket; the crankshaft moves the punching blade (8) back, and when the steel sheet and the magnetic sensor reach the effective range, the magnetic sensor contacts are turned on to generate a signal, and the magnetic sensor transmits the signal to the PLC.

2. The gold wire automatic feeding and precise fixed-length cutting equipment according to claim 1 is characterized in that: The gold wire upper and lower guide assembly (4) comprises a base plate, a vertical plate, a fourth V-groove wheel and a fourth pressure wheel. The base plate is fixed on the table top of the feeder frame (6), the vertical plate is fixed on the base plate, the fourth V-groove wheel and the fourth pressure wheel are both installed on the vertical plate through axles, the fourth V-groove wheel is located below the fourth pressure wheel and the axles of the fourth V-groove wheel and the fourth pressure wheel are located on the same straight line, the fourth V-groove wheel and the fourth pressure wheel are fitted together, and the gold wire (13) is inserted into the V-groove of the fourth V-groove wheel.

3. The gold wire automatic feeding and precise fixed-length cutting equipment according to claim 1 is characterized in that: Two wire sleeves (54-2) are symmetrically embedded at both ends of a lower support frame (54-1) of a lower gear set unit (54) in a wire feeding device (5).

4. The gold wire automatic feeding and precise fixed-length cutting equipment according to claim 1 is characterized in that: The measuring head of the photoelectric displacement sensor is mounted on the upper and lower gold wire guide components (4) via a sensor bracket, and the measuring head points to the gold wire (13).

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