An ultra-thin noble metal strip press feeding, winding auxiliary device

Abstract

The utility model discloses a kind of ultra-thin noble metal strip punching press feeding, winding auxiliary device, belong to noble metal alloy material stamping processing technical field;The auxiliary device includes base made of conductive metal, vertical support, induction roller I, induction roller II, fixed base, and the insulation fixed connection between vertical support and base;Weak current output end of the control system of feeder, winding machine is respectively accessed base, vertical support, when strip in auxiliary device and induction roller I or induction roller II contact, strip is transmitted back control system with weak current by the metal structure of feeder, winding machine and cooperates metal wire and forms different loop with weak current output end, control system determines signal source according to the weak current input end of the loop formed, then control system is according to weak current signal source to induct weak current signal or lose weak current signal as the control condition of feeder or winding machine action, quickly adjust strip surplus or match conveying speed.

Description

Technical Field

[0001] This utility model belongs to the field of stamping processing technology of precious metal alloy materials, specifically relating to an auxiliary device for feeding and coiling of ultra-thin precious metal strips in a stamping press. Background Technology

[0002] In the stamping process of precious metal alloy materials into products of different shapes and sizes, the feeding and winding of ultra-thin precious metal strips are accomplished by a feeder positioned forward and a winding machine positioned backward on the press. Typically, the thinnest ultra-thin precious metal strips are ≤0.015mm thick. Even when the press equipment has the ability to control and adjust the speed of the feeder, winding machine, and press operation, mismatches between the feeding speed, winding speed, and stamping speed can still occur. This leads to pulling and compression of the ultra-thin precious metal strip during movement, easily causing damage, deformation, or even breakage, and disrupting production. Therefore, developing an auxiliary device for feeding and winding ultra-thin precious metal strips to overcome the mismatch between feeding speed, winding speed, and stamping speed is essential for the stamping processing of precious metal alloy materials. Utility Model Content

[0003] The purpose of this utility model is to provide an auxiliary device for feeding and winding ultra-thin precious metal strips for punching presses, which is used to adapt to the stamping speed, feeding speed and winding speed.

[0004] The purpose of this utility model is achieved as follows: the ultra-thin precious metal strip punching press feeding and winding auxiliary device includes a base made of conductive metal, a vertical support, induction roller I, induction roller II, and a fixed seat; induction rollers II, I, and II of the same diameter are arranged parallel to each other on the front, middle, and rear parts of the base surface, and the horizontal distance between induction roller I and the two side induction rollers II is not less than 1 times the diameter; induction roller I includes a central shaft and a cylinder that rotates around the central shaft through bearings, and induction roller II includes a central shaft and a cylinder that is fixedly sleeved with it; the two ends of the central shaft of induction roller II are rotatably connected to bearings in the fixed seat on the base, and induction roller II is clearance-fitted with the base; one induction roller II is provided on each side of the base. A vertical support with longitudinal grooves is insulated and fixed to the base. The two ends of the central shaft of induction roller I are limited and slidably fitted with the longitudinal grooves on both sides, and the lifting position of induction roller I can be locked. When in the high position, the bottom surface of induction roller I can exceed the upper surface of the ultra-thin precious metal strip being conveyed in a flat state. The axial length of the cylindrical surfaces of induction rollers I and II is greater than the width of the ultra-thin precious metal strip. The width between the two vertical supports is such that the ultra-thin precious metal strip does not contact the vertical supports during conveying. The base and vertical supports are respectively equipped with low-voltage input positions. The control systems of the feeder and winding machine are each equipped with a low-voltage output terminal, which inputs 10~ Ω to the base and vertical supports respectively via the low-voltage input positions. The 12V low-voltage circuit receives low-voltage signals from different input terminals on the surfaces of induction rollers I and II. During application, the ultra-thin precious metal strip passes between induction rollers I and II without contact, and the bottom surface of induction roller I is lower than the upper surface of the ultra-thin precious metal strip in a flat conveying state. When the ultra-thin precious metal strip in the auxiliary device at the feeder comes into contact with induction roller I or induction roller II, the ultra-thin precious metal strip, through the feeder's metal structure and in conjunction with metal wires, transmits the low-voltage signal back to the control system and forms a loop with the low-voltage output terminal. The control system determines the signal source based on the low-voltage input terminal of the formed loop. If the signal originates from induction roller I, the sensing of the low-voltage signal and the loss of the low-voltage signal are used as the feeder's speed-up signal and speed-down signal, respectively. If the signal originates from induction roller II, the sensing of a weak electrical signal and the loss of a weak electrical signal are used as the feeder stop signal and start signal, respectively. When the ultra-thin precious metal strip in the auxiliary device on the punch press outlet side comes into contact with induction roller I or induction roller II, the ultra-thin precious metal strip transmits the weak electrical signal back to the control system through the metal structure of the winding machine and in conjunction with the metal wire, forming a loop with the weak electrical output terminal. The control system determines the signal source based on the weak electrical input terminal of the formed loop. If the signal originates from induction roller I, the sensing of a weak electrical signal and the loss of a weak electrical signal are used as the winding machine stop signal and start signal, respectively. If the signal originates from induction roller II, the sensing of a weak electrical signal and the loss of a weak electrical signal are used as the winding machine speed-up signal and speed-up stop signal, respectively.

[0005] During the stamping of ultra-thin precious metal strip, a certain amount of allowance is left between the punch press and the feeder and coiler, resulting in a moderately natural droop in the central area. This invention utilizes the space between two induction rollers (I and II) positioned at different heights as a non-contact passage for the strip. The control systems of both the feeder and coiler transmit low-voltage electricity in two paths through a single low-voltage output terminal to the surfaces of induction rollers I and II. When the ultra-thin precious metal strip contacts the surface of either induction roller I or II, the low-voltage electricity is conducted back to the feeder or coiler. This cleverly utilizes the metal structure of the feeder or coiler and, in conjunction with metal wires, introduces the low-voltage electricity into the control system, forming different circuits with the low-voltage output terminal. The control system then adjusts the circuit accordingly. The source of the weak current signal can be determined at the low-voltage input terminal. Then, the control system uses the detection or loss of the weak current signal as the control condition for the feeder or winding machine to operate, quickly adjusting the strip allowance or matching the conveying speed. This avoids strip damage, deformation, or even breakage and production chaos caused by the inability of the stamping speed, feeding speed, and winding speed to operate at equal speeds. The auxiliary device can be used as a control device for the safety allowance of the strip or as an auxiliary device for selecting a suitable conveying speed. Moreover, the low-voltage signal is transmitted quickly, and the auxiliary device can respond and adjust rapidly when the transmission speed changes abnormally. At the same time, this utility model has a simple structure and is easy to operate, which can greatly improve production efficiency and product quality. Attached Figure Description

[0006] Figure 1 This is a three-dimensional schematic diagram of the auxiliary device described in this utility model; In the diagram: 1-Vertical bracket; 2-Induction roller I; 3-Top plate; 4-Base; 5-Fixed seat; 6-Wheel bracket; 7-Wheel; 8-Brake; 9-Insulated locking handle; 10-Insulated handle; 11-Induction roller II; 12-Low voltage connection point; 13-Height gauge. Detailed Implementation

[0007] The present invention will be further described below with reference to the accompanying drawings, but this description does not limit the present invention in any way. Any changes or substitutions made based on the teachings of the present invention shall fall within the protection scope of the present invention. The strip material mentioned in the specification is equivalent to ultra-thin precious metal strip material.

[0008] As attached Figure 1As shown, the ultra-thin precious metal strip punching press feeding and winding auxiliary device of this utility model includes a base 4 made of conductive metal, a vertical support 1, an induction roller I2, an induction roller II11, and a fixed base 5; the induction rollers II11, I2, and II11 of the same diameter are arranged parallel to each other on the front, middle, and rear parts of the surface of the base 4, and the horizontal distance between the induction roller I2 and the two induction rollers II11 on both sides is not less than 1 times the diameter; the induction roller I2 includes a central shaft and a cylinder that rotates around the central shaft through bearings, and the induction roller II11 includes a central shaft and a cylinder that is fixedly sleeved with it; The two ends of the central shaft of roller II11 are rotatably connected to the bearings in the fixed seat 5 on the base 4, and the induction roller II11 is clearance-fitted with the base 4; each side of the base 4 is provided with a vertical support 1 with a longitudinal sliding groove, and the vertical support 1 is insulated and fixed to the base 4. The two ends of the central shaft of induction roller I2 are limited and slidably fitted with the longitudinal sliding grooves on both sides, and the lifting position of induction roller I2 can be locked. When in the high position, the bottom surface of induction roller I2 can exceed the upper surface of the ultra-thin precious metal strip being conveyed in a flat state. The axial length of the cylindrical surface of induction roller I2 and induction roller II11 is greater than the width of the ultra-thin precious metal strip, and the vertical support 1 on both sides is between The width is designed so that the ultra-thin precious metal strip does not come into contact with the vertical support 1 during the conveying process. The base 4 and the vertical support 1 are each equipped with a low-voltage input position 12. The control systems of the feeder and the winding machine each have a low-voltage output terminal. This output terminal receives 10-12V low-voltage electricity from the low-voltage input position 12 and inputs it to the base 4 and the vertical support 1. The surfaces of the induction rollers I2 and II11 receive low-voltage electricity from different input terminals. During application, the ultra-thin precious metal strip passes between the induction rollers I2 and II11 without contact, and the bottom surface of the induction roller I is lower than the flat surface used for conveying the ultra-thin precious metal strip. The upper surface of the material; when the ultra-thin precious metal strip in the auxiliary device of the feeder comes into contact with the induction roller I2 or the induction roller II11, the ultra-thin precious metal strip transmits the weak current back to the control system through the metal structure of the feeder and in conjunction with the metal wire, and forms a loop with the weak current output terminal. The control system determines the signal source according to the weak current input terminal of the formed loop. If the signal comes from the induction roller I2, the sensing of the weak current signal and the loss of the weak current signal are respectively used as the feeder speed-up signal and the stop speed-up signal. If the signal comes from the induction roller II11, the sensing of the weak current signal and the loss of the weak current signal are respectively used as the feeder stop signal and the start signal.When the ultra-thin precious metal strip in the auxiliary device at the punch press outlet comes into contact with induction roller I2 or induction roller II11, the ultra-thin precious metal strip transmits weak current back to the control system via the metal structure of the winding machine and a metal wire, forming a loop with the weak current output terminal. The control system determines the signal source based on the weak current input terminal of the formed loop. If the signal originates from induction roller I2, the sensing of the weak current signal and the loss of the weak current signal are used as the winding machine stop signal and start signal, respectively. If the signal originates from induction roller II11, the sensing of the weak current signal and the loss of the weak current signal are used as the winding machine speed-up signal and speed-up stop signal, respectively.

[0009] Preferably, the diameter of induction roller I2 and induction roller II11 is 30~34cm.

[0010] Preferably, the top plate 3 is fixedly connected to the top of the vertical supports 1 on both sides, and an insulating handle 10 is provided on the top plate 3. An insulating rubber pad is provided between the insulating handle 10 and the top plate 3. When a weak current is applied, the base 4, vertical supports 1, induction roller I2, induction roller II11, and fixed seat 5 are all in a weak current state. Under normal circumstances, the 10~12V weak current cannot be felt when the hands are dry or when wearing gloves. However, if the hands are wet, a tingling sensation will still occur. The above settings protect the operator and prevent injury from weak current.

[0011] Preferably, both vertical supports 1 are provided with height scales 13 in their longitudinal grooves; this arrangement facilitates the horizontal setting of the sensing roller I2.

[0012] Preferably, an insulating layer is laid on both sides of the longitudinal groove on opposite sides of the vertical supports 1. Since the low voltage output terminal of the control system of the feeder or winding machine uses the low voltage input position 12 as the low voltage input terminal to input 10~12V low voltage to the base 4 and the vertical support 1 in two ways, the surfaces of the induction rollers I2 and II11 are charged with low voltage. If the ultra-thin precious metal strip comes into contact with the vertical support 1 due to abnormal fluctuations during the conveying process, the control system will misjudge that the ultra-thin precious metal strip is in contact with the induction roller I2. Although the present invention limits the width between the two vertical supports 1 to ensure that the ultra-thin precious metal strip does not come into contact with the vertical support 1 during the conveying process, the above setting can better avoid misjudgment.

[0013] Preferably, the lifting position of the sensing roller I2 is locked by the insulated locking handle 9; this setting facilitates the operation of the sensing roller I2 with low-voltage locking.

[0014] Preferably, the gap between the induction roller II11 and the base 4 is 4~5mm.

[0015] Preferably, a level is provided on the base 4.

[0016] Preferably, four sets of height-adjustable support legs are insulated and fixedly installed below the base 4.

[0017] Preferably, four sets of height-adjustable caster brackets 6 and corresponding casters 7 are insulated and fixedly installed below the base 4, and the caster brackets 6 are equipped with brakes 8; this arrangement facilitates installation and movement.

[0018] Preferably, the outer surface of the fixing seat 5 is configured as an arc structure that adapts to the surface shape of the induction roller II11; this configuration reduces the risk of scratching the surface of the ultra-thin precious metal strip.

[0019] Working principle and process: During production, the ultra-thin precious metal strip is fed into the punch press by the feeder and then the winding machine continues to wind up the ultra-thin precious metal strip product. At this time, the feeder, punch press and winding machine work synchronously. In order to prevent the feeding speed, winding speed and punching speed from being mismatched and affecting the strip, the strip running between the feeder and punch press and / or between the punch press and winding machine will usually have a certain amount of margin, so that the middle area of ​​the strip is in a moderately drooping state. However, when the feeding speed and winding speed are not properly controlled or abnormal changes occur, the strip will still be damaged.

[0020] Therefore, in the auxiliary device described in this utility model, the base 4, vertical support 1, induction roller I2, induction roller II11, and fixed base 5 are made of conductive metal. When the weak current output terminal of the feeder or winding machine's control system inputs weak current to the base 4 and vertical support 1 through the weak current input position 12 (the two weak current input positions 12 are referred to as weak current input terminals A and B respectively), the weak current is synchronously conducted to the surface of induction roller I2 and induction roller II11. When the strip contacts the surface of induction roller I2 or induction roller II11, it carries a weak current. The strip passes through the channel between the high and low-positioned induction rollers I2 and induction roller II11 without contact, and the bottom surface of induction roller I2 is lower than the plane when the strip is horizontally conveyed. When the feeding speed, winding speed, and stamping speed are mismatched, the strip allowance in the auxiliary device increases or decreases. When the allowance increases or decreases to a certain extent, it will interact with the induction roller I2 and induction roller II11. The feeder and rewinder are in contact with roller II11 or induction roller I2. Since both are metal structures and maintain constant contact with the strip, low-voltage electricity is transmitted back to the feeder or rewinder via the strip. Using existing conventional methods, this transmitted low-voltage electricity can be connected to the control system. The shafts carrying the ultra-thin precious metal coil are all metal structures, as are the main bodies of the feeder and rewinder. Metal wires are installed at suitable locations on the feeder and rewinder (where there is an electrical connection to the ultra-thin precious metal coil and the position is fixed), allowing the low-voltage electricity on the strip to be introduced into the control system. Because the vertical support 1 and the base 4 are insulated and fixed, the transmitted low-voltage electricity and the low-voltage output terminal form different circuits. The control system determines the source of the low-voltage signal based on the low-voltage input terminal of the formed circuit, and uses the signal source, the sensing of the low-voltage signal, and the loss of the low-voltage signal as the start signal for the feeder or rewinder's operation control. Specifically: When the auxiliary device works in conjunction with the feeder to feed materials: a. If the feeding speed is greater than the stamping speed, the strip allowance below the induction roller I2 increases. When the strip contacts any of the induction rollers II11 on the base 4, the strip transmits a weak electrical signal back to the feeder control system and forms a loop with the weak electrical output terminal. The control system confirms that the weak electrical signal originates from the induction roller II11 based on the weak electrical input terminal of the loop being weak electrical input terminal A. At this time, the control system uses the sensed weak electrical signal as a stop signal to control the feeder to stop feeding. When the strip leaves the induction roller II11, the loop in the control system loses the weak electrical signal, which serves as the condition for starting the feeder and resuming feeding. This process is repeated to ensure that the feeder conveys the strip with an appropriate allowance.

[0021] b. If the feeding speed is less than the stamping speed, the strip allowance below the induction roller I2 decreases. When the strip contacts the induction roller I2, the strip transmits the weak electrical signal back to the feeder control system and forms a loop with the weak electrical output terminal. The control system confirms that the weak electrical signal originates from the induction roller I2 based on the weak electrical input terminal B. At this time, the control system uses the sensed weak electrical signal as an acceleration signal to increase the feeding speed. When the strip leaves the induction roller I2, the loop in the control system loses the weak electrical signal, which serves as a stop acceleration signal. The feeder then maintains the instantaneous feeding speed, thereby enabling the feeder to feed at a more suitable speed and maintain an appropriate strip allowance.

[0022] When the auxiliary device is used in conjunction with the winding machine for winding: c. If the winding speed exceeds the stamping speed, the strip allowance below the induction roller I2 decreases. When the strip contacts the induction roller I2, it transmits a weak electrical signal to the rewinder control system and forms a loop with the weak electrical output terminal. The control system confirms that the weak electrical signal originates from the induction roller I2 based on the weak electrical input terminal B. At this time, the control system uses the sensed weak electrical signal as a stop signal to control the rewinder to stop winding. When the strip leaves the induction roller I2, the loop in the control system loses the weak electrical signal, which serves as the condition to start the rewinder and resume winding. This process is repeated to ensure that the rewinder winds up the strip with an appropriate allowance.

[0023] d. If the winding speed is less than the stamping speed, the strip allowance below the induction roller I2 increases. When the strip contacts any of the induction rollers II11 on the base 4, the strip transmits a weak electrical signal to the rewinder control system and forms a loop with the weak electrical output terminal. The control system confirms that the weak electrical signal originates from the induction roller II11 based on the weak electrical input terminal A. At this time, the control system uses the sensed weak electrical signal as an acceleration signal to increase the winding speed. When the strip leaves the induction roller II11, the loop in the control system loses the weak electrical signal, which serves as a stop acceleration signal. The rewinder maintains the instantaneous winding speed, thereby enabling the rewinder to wind at a more suitable speed and maintain an appropriate strip allowance.

[0024] Based on the above working principle, the auxiliary device can serve as a strip safety protection device to prevent ultra-thin precious metal strips from being pulled or even broken, or to prevent strips from being excessively stacked, bent, or damaged. At the same time, the auxiliary device can also serve as an auxiliary speed adjustment device to facilitate adjustment to a more suitable conveying speed. In addition, since weak electrical signals can be quickly transmitted in the circuit, the feeder and rewinder can react quickly when a weak electrical signal is sensed or lost, better responding to abnormal speed changes in the feeder and rewinder, and also handling various situations such as the punch press changing its stamping speed according to production needs.

[0025] The height of the induction roller I2 is adjusted according to the thickness of the ultra-thin precious metal strip. Generally, when the thickness is ≤0.1mm, the strip is relatively soft, with a larger allowance and a greater degree of sag in the central area. In this case, the position of the induction roller I2 can be slightly lower. When the thickness is >0.1mm, the strip is slightly harder, with a smaller allowance and a smaller degree of sag in the central area. In this case, the position of the induction roller I2 can be slightly higher. A certain distance is left between the bottom surface of the induction roller I2 and the upper surface of the ultra-thin precious metal strip. The distance can be reasonably selected according to the strip thickness and sag, or reasonably calculated based on historical data of the difference between the conveying and stamping speeds during production. The distance between the surface of the induction roller II11 and the ultra-thin precious metal strip is based on the requirement that when the strip allowance increases to the point that it contacts the surface of the induction roller II11, the stacked strip does not form creases.

Claims

1. A feeding and winding auxiliary device for ultra-thin precious metal strip punching press, characterized in that, The auxiliary device is installed at the feeder at the punch press inlet and / or the winding machine at the outlet. The auxiliary device includes a base (4) made of conductive metal, a vertical support (1), an induction roller I (2), an induction roller II (11), and a fixed seat (5). The front, middle, and rear parts of the base (4) are arranged in parallel with the induction roller II (11), induction roller I (2), and induction roller II (11) of the same diameter. The horizontal distance between the induction roller I (2) and the two induction rollers II (11) on both sides is not less than 1 times the diameter. The induction roller I (2) includes a central shaft and a cylinder that rotates around the central shaft through bearings. The induction roller II (11) includes a central shaft and a cylinder that is fixedly sleeved with it. The two ends of the central shaft of the induction roller II (11) are rotatably connected to the bearings in the fixed seat (5) on the base (4), and the induction roller II (11) and the base (4) are clearance-fitted; a vertical support (1) with a longitudinal sliding groove is provided on each side of the base (4), and the vertical support (1) is insulated and fixed to the base (4). The two ends of the central shaft of the induction roller I (2) are limited and slidably fitted with the longitudinal sliding grooves on both sides, and the lifting position of the induction roller I (2) can be locked. When in the high position, the bottom surface of the induction roller I (2) can exceed the upper surface of the ultra-thin precious metal strip in the flat state. The axial length of the cylinder surface of the induction roller I (2) and the induction roller II (11) is greater than the width of the ultra-thin precious metal strip. The width between the two vertical supports (1) is such that the ultra-thin precious metal strip does not come into contact with the vertical support (1) during the conveying process; the base (4) and the vertical support (1) are respectively provided with a low voltage input position (12), and the control system of the feeder and the winding machine is provided with a low voltage output terminal. The low voltage output terminal inputs 10~12V low voltage to the base (4) and the vertical support (1) respectively with the low voltage input position (12) as the input terminal. The surfaces of the induction roller I (2) and the induction roller II (11) receive low voltage from different input terminals; in application, the ultra-thin precious metal strip passes through the induction roller I (2) and the induction roller II (11) without contact, and the bottom surface of the induction roller I (2) The upper surface of the ultra-thin precious metal strip is conveyed below the flat state; when the ultra-thin precious metal strip in the auxiliary device of the feeder comes into contact with the induction roller I (2) or the induction roller II (11), the ultra-thin precious metal strip transmits the weak current back to the control system with the help of the metal structure of the feeder and the metal wire and forms a loop with the weak current output terminal. The control system determines the source of the signal according to the weak current input terminal of the formed loop. If the signal comes from the induction roller I (2), the induction of the weak current signal and the loss of the weak current signal are respectively used as the feeder speed-up signal and the stop speed-up signal. If the signal comes from the induction roller II (11), the induction of the weak current signal and the loss of the weak current signal are respectively used as the feeder stop signal and the start signal.When the ultra-thin precious metal strip in the auxiliary device on the punch press outlet side comes into contact with induction roller I (2) or induction roller II (11), the ultra-thin precious metal strip transmits the weak current back to the control system through the metal structure of the winding machine and in conjunction with the metal wire, forming a loop with the weak current output terminal. The control system determines the signal source based on the weak current input terminal of the formed loop. If the signal comes from induction roller I (2), the sensing of the weak current signal and the loss of the weak current signal are used as the winding machine stop signal and start signal, respectively. If the signal comes from induction roller II (11), the sensing of the weak current signal and the loss of the weak current signal are used as the winding machine speed-up signal and speed-up stop signal, respectively.

2. The auxiliary device according to claim 1, characterized in that, The diameters of induction roller I (2) and induction roller II (11) are 30~34cm.

3. The auxiliary device according to claim 1, characterized in that, The top plate (3) is fixedly connected to the top of the vertical brackets (1) on both sides. An insulating handle (10) is provided on the top plate (3). An insulating layer is provided between the insulating handle (10) and the top plate (3).

4. The auxiliary device according to claim 1 or 3, characterized in that, Height gauges (13) are provided on the longitudinal grooves of the vertical supports (1) on both sides.

5. The auxiliary device according to claim 1 or 3, characterized in that, Insulation layers are laid on both sides of the longitudinal grooves on opposite sides of the vertical supports (1).

6. The auxiliary device according to claim 1 or 2, characterized in that, The lifting position of the induction roller I (2) is locked by the insulated locking handle (9).

7. The auxiliary device according to claim 1 or 2, characterized in that, The gap between the induction roller II (11) and the base (4) is 4~5mm.

8. The auxiliary device according to claim 1, characterized in that, A level is installed on the base (4).

9. The auxiliary device according to claim 1, characterized in that, Four sets of height-adjustable support legs are insulated and fixedly installed below the base (4).

10. The auxiliary device according to claim 1, characterized in that, Four sets of height-adjustable caster brackets (6) and corresponding casters (7) are insulated and fixedly installed below the base (4). The caster brackets (6) are equipped with brake components (8).

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