A debossing machine for membrane switches

Abstract

The present invention relates to the technical field of thin-film switch processing equipment, and discloses a convex pressing machine for thin-film switches, which includes a machine body, a workbench and a lower die base. The lower die base is fixed at the center position of the top of the workbench, and an upper die base is arranged directly above the lower die base. The workbench is fixed on the machine body. It also includes: two sets of brackets symmetrically fixed on both sides of the lower die base. A conveying unit for conveying the thin-film switch is arranged between the two sets of brackets. A transfer unit is installed on the side of the bracket away from the lower die base. The output end of the transfer unit is fixedly connected with two sets of material taking units. Through the designed conveying unit, two sets of material taking units and the transfer unit, the present invention realizes the effect of automatically picking and placing the thin-film switch before and after processing, enables the feeding and unloading of the thin-film switch to be synchronized. Compared with the existing convex pressing machine for thin-film switches that uses a manual method for material taking, the automation degree is higher, and the working efficiency of the convex pressing machine for thin-film switches is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thin film switch processing equipment, and particularly to a convex pressing machine for thin film switches. Background Art

[0002] A thin film switch is an operating system integrating button functions, indicating elements, and instrument panels, and is widely used in fields such as electronic communication, electronic measuring instruments, industrial control, medical equipment, automotive industry, intelligent toys, and household appliances.

[0003] During the process of convex pressing a thin film switch using a convex pressing machine, it is necessary for the operator to change materials under the pressing table. This method of changing materials may lead to out-of-control of the hydraulic cylinder, resulting in injury to the operator. At the same time, changing materials under the pressing table has a small space, which affects the speed of changing materials for thin film switches. In order to facilitate the operator to place unprocessed thin film switches on the lower pressing table, the existing Chinese patent document CN202222776101.0 discloses a thin film switch convex pressing machine. Through the setting of the material changing mechanism, it avoids the operator from taking materials under the upper pressing table, improving the safety of the operator's work. At the same time, the existing Chinese patent document CN202123054823.7 discloses a thin film switch convex pressing machine. By driving the lower die base to expand and contract through an electric telescopic rod, the lower die base can be moved under the action of a chute and a slide rail, thereby realizing the automation of the movement of the lower die base, facilitating the operator to pick up and place thin film switches, and preventing the hydraulic cylinder from getting out of control and causing injury to the operator;

[0004] In the two above-mentioned proposed solutions, although the equipment can already achieve the automatic picking and placing function of thin film switches, in the actual operation process, when it is necessary to take out the processed thin film switches, it still relies on manual operation by the operator to pick them up and place them in the designated position. This operation method has obvious inefficiency when processing thin film switches in large quantities and cannot meet the high-efficiency production requirements; in addition, during the process of convex pressing a thin film switch using a convex pressing machine, it is usually necessary to heat-treat the thin film switch first. Taking materials manually not only has low efficiency, but also the operator's hand is easily affected by high temperature during the heating process, posing certain safety hazards. Therefore, this manual material taking method has many limitations in practical applications, not only affecting production efficiency, but also possibly causing harm to the operator. Summary of the Invention

[0005] The purpose of the present invention is to provide a convex pressing machine for thin film switches to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A convex pressing machine for a membrane switch, comprising a machine body, a workbench and a lower die base. The lower die base is fixed at the center position of the top of the workbench. An upper die base is arranged directly above the lower die base, and the workbench is fixed on the machine body. It further includes: Two sets of brackets symmetrically fixed on both sides of the lower die base. A conveying unit for conveying the membrane switch is arranged between the two sets of brackets. A transfer unit is installed on the side of the bracket away from the lower die base. The output end of the transfer unit is fixedly connected with two sets of material taking units. The two sets of material taking units are distributed front and back and are respectively used for automatically picking and placing the membrane switch before and after processing. A propulsion unit installed at one end of the bracket, which is used to automatically trigger the conveying unit to work and intermittently convey the membrane switch to be processed. A support plate fixed on the side of the machine body away from the conveying unit, and a receiving box is arranged on the support plate.

[0007] Preferably, the material taking unit includes a sealed box, a piston plate, a piston rod, a connecting frame, a clamping assembly and a swinging assembly. The top of the sealed box is fixedly connected with the transfer unit through the connecting frame. The piston plate is slidably and sealingly connected inside the sealed box. There are two piston rods, and the two piston rods are symmetrically fixed on the top of the piston plate. The end of the piston rod away from the piston plate slidably penetrates the top of the sealed box and is fixedly connected with the output end of the swinging assembly. A plurality of push rods are arranged in an array at the bottom of the piston plate. The end of the push rod away from the piston plate extends below the sealed box and is fixed with a U-shaped plate. The push rod is slidably sleeved with the sealed box through a sealing ring. The clamping assembly is installed at the bottom of the U-shaped plate. One end of the sealed box is fixedly inserted with an air inlet pipe, and a second one-way valve is fixed at the end of the air inlet pipe away from the sealed box. A plurality of blowing assemblies are evenly distributed on the side of the sealed box close to the lower die base.

[0008] Preferably, the swinging assembly includes a limit seat, a first rotating shaft, a first gear, a swing rod, a first connecting rod, a pulley and a transmission plate. The first rotating shaft is rotatably connected with the limit seat through a bearing. The bottom of the limit seat is slidably connected with a chute opened on the bracket. The first gear is fixed to the end of the first rotating shaft away from the limit seat. One end of the swing rod is fixed to the central end of the first gear. The other end of the swing rod is fixedly connected with the first connecting rod. The pulley is installed at the end of the first connecting rod away from the swing rod. A groove is opened on one side of the transmission plate, and the pulley is slidably connected in the groove. The transmission plate is fixed on the top of the piston rod. A first rack and a second rack are fixed on the bracket.

[0009] Preferably, the clamping assembly includes a second rotating shaft, a threaded column, a clamping plate, a connecting shaft and a second gear. The second rotating shaft is rotatably connected to the inside of the U-shaped plate through a bearing seat. Two groups of threaded columns are symmetrically provided. The two groups of threaded columns are respectively fixed at both ends of the second rotating shaft, and the thread directions of the two groups of threaded columns are opposite. Each group of threaded columns is threadedly connected with a clamping plate through a nut. A sliding bar is fixed to the top of the clamping plate, and the top of the sliding bar is slidably connected to a chute opened on the inside of the U-shaped plate. The connecting shaft is fixed to the end of the threaded column away from the second rotating shaft, and the second gear is fixedly sleeved on the connecting shaft.

[0010] Preferably, the blowing component includes an air delivery pipe, a first one-way valve and an air outlet pipe. The air delivery pipe is fixedly inserted into one side of the sealed box. The air outlet pipe is fixedly connected to the air delivery pipe through the first one-way valve. The end of the air outlet pipe away from the first one-way valve is arranged in a downwardly curved state.

[0011] Preferably, the transfer unit includes a transfer motor, a ball screw, a ball nut, a second connecting rod, a connecting plate, a slider and a guide rail. The transfer motor is fixed to the outside of the platform. The output end of the transfer motor is fixedly connected to the ball screw through a coupling. Both ends of the ball screw are installed on the platform through bearing seats. The ball nut is threadedly sleeved on the outside of the ball screw. The second connecting rod is fixed to the ball nut. The end of the second connecting rod away from the ball nut is fixedly connected to the connecting plate through a bolt. One side of the slider is fixedly connected to the connecting plate. The guide rail is fixed to the outside of the platform. The slider is slidably connected to the guide rail. The connecting plate is fixedly connected to the connecting frame through a fixing plate.

[0012] Preferably, the conveying unit includes conveying rollers, a third rotating shaft, a conveyor belt, a third gear and a fourth gear. A plurality of conveying rollers are provided. The plurality of conveying rollers are evenly distributed on both sides in the length direction of the platform. The third rotating shaft is fixed to both ends of the conveying roller. The third rotating shaft is rotatably connected to the platform through a bearing. The third gear is fixed to one of the third rotating shafts. The fourth gear is meshed with the third gear. A fourth rotating shaft is fixed in the central hole of the fourth gear. One end of the fourth rotating shaft is rotatably connected to the platform through a bearing. The conveyor belt is installed on the outside of the conveying roller. The propulsion unit is arranged on one side of the fourth gear.

[0013] Preferably, the propulsion unit includes a ratchet wheel, a leaf spring, a detent pawl, a pawl, a push rod, and a limit rod. The ratchet wheel is fixed to one end of the fourth rotating shaft. One end of the detent pawl is movably clamped with the tooth groove of the ratchet wheel. The leaf spring is elastically connected to one side of the detent pawl. A fixing bracket is fixed to one end of the leaf spring. The fixing bracket is fixedly connected to the frame. The end of the detent pawl away from the ratchet wheel is rotatably connected to the fixing bracket. One end of the pawl is movably clamped with the tooth groove of the ratchet wheel. The end of the pawl away from the ratchet wheel is fixedly connected to the push rod. A moving plate is rotatably connected to the end of the push rod away from the pawl. The moving plate is fixedly connected to the connecting frame. The limit rod is fixedly connected to the moving plate through a fixing block. The push rod is lapped on the limit rod.

[0014] Preferably, a first toothed plate and a second toothed plate are fixed to the inner side of the frame. The teeth of the first toothed plate are located on its upper side. The teeth of the second toothed plate are located on its lower side. The first toothed plate and the second toothed plate are arranged in a staggered manner.

[0015] Preferably, a third toothed plate and a fourth toothed plate are also fixed to the inner side of the frame. The teeth of the third toothed plate are located on its upper side. The teeth of the fourth toothed plate are located on its lower side. The third toothed plate and the fourth toothed plate are arranged in a staggered manner.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By improving the existing embossing machine, the present invention realizes the automatic picking and placing of the membrane switch before and after processing through the designed conveying unit, two sets of picking units, and the transfer unit, enabling the feeding and unloading of the membrane switch to be synchronized. Compared with the existing embossing machine that uses a manual method for picking, the automation degree is higher, and the working efficiency of the embossing machine for the membrane switch is improved.

[0018] 2. Through the mutual cooperation of the conveying unit and the propulsion unit provided in the present invention, when the transfer unit resets, it drives the propulsion unit to drive the conveying unit, and moves a single membrane switch on the conveying unit to the position of the picking unit, automatically preparing for the next operation of the picking unit, and improving the flexibility of the membrane switch in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the partial structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the picking unit of the present invention;

[0022] Figure 4Schematic structural diagram of the swinging component of the present invention;

[0023] Figure 5 Side view of the clamping component of the present invention;

[0024] Figure 6 Schematic structural diagram of the transfer unit of the present invention;

[0025] Figure 7 Schematic structural diagram of the conveying unit of the present invention;

[0026] Figure 8 Schematic structural diagram of the propulsion unit of the present invention;

[0027] Figure 9 Schematic diagram of the relative positions of the first rack, second rack, first toothed plate, second toothed plate, third toothed plate and fourth toothed plate in the present invention;

[0028] Figure 10 Schematic structural diagram of the blowing component of the present invention.

[0029] In the figure: 1, machine body; 101, workbench; 102, lower die holder; 103, upper die holder; 104, stand; 2, material taking unit; 201, sealed box; 202, piston plate; 203, piston rod; 204, connecting frame; 205, clamping component; 2051, second rotating shaft; 2052, threaded column; 2053, clamping plate; 2054, connecting shaft; 2055, second gear; 2056, slide bar; 206, swinging component; 2061, limit seat; 2062, first rotating shaft; 2063, first gear; 2064, swing rod; 2065, first connecting rod; 2066, pulley; 2067, transmission plate; 2068, first rack; 2069, second rack; 207, push-pull rod; 208, U-shaped plate; 209, intake pipe; 2010, second one-way valve; 2011, blowing component; 20111, air delivery pipe; 20112, first one-way valve; 20113, air outlet pipe; 3, transfer unit; 301, transfer motor; 302, ball screw; 303, ball nut; 304, second connecting rod; 305, connecting plate; 306, slider; 307, guide rail; 4, conveying unit; 401, conveying roller; 402, third rotating shaft; 403, conveyor belt; 404, third gear; 405, fourth gear; 406, fourth rotating shaft; 5, support plate; 501, material receiving box; 6, propulsion unit; 601, ratchet; 602, leaf spring; 603, detent pawl; 604, pawl; 605, push rod; 606, limit rod; 607, moving plate; 608, fixed frame; 7, first toothed plate; 8, second toothed plate; 9, third toothed plate; 10, fourth toothed plate. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Please refer to Figure 1 and Figure 2 , a debossing machine for a membrane switch shown in the figure, includes a machine body 1, a workbench 101 and a lower die base 102. The lower die base 102 is fixed at the center position on the top of the workbench 101. An upper die base 103 is provided directly above the lower die base 102. The workbench 101 is fixed on the machine body 1. By moving the upper die base 103 downward and cooperating with the lower die base 102, debossing is performed on the membrane switch.

[0032] It further includes: two sets of brackets 104 symmetrically fixed on both sides of the lower die base 102. A conveying unit 4 for conveying the membrane switch is provided between the two sets of brackets 104. A transfer unit 3 is installed on one side of the bracket 104 away from the lower die base 102. The output end of the transfer unit 3 is fixedly connected with two sets of material taking units 2. The two sets of material taking units 2 are distributed front and back and are respectively used for automatically picking and placing the membrane switch before and after processing. A support plate 5 fixed on the side of the machine body 1 away from the conveying unit 4. A receiving box 501 is provided on the support plate 5. Driven by the transfer unit 3, the material taking unit 2 moves horizontally. The material taking unit 2 close to the workbench 101 automatically moves downward and clamps the membrane switch that has been processed. The other set of material taking units 2 also moves downward and clamps the membrane switch to be processed next. Finally, when moving to a suitable position, the processed membrane switch is automatically released from the clamp, unloaded and dropped into the receiving box 501. The membrane switch to be processed next is just conveyed directly above the lower die base 102 and automatically placed, realizing the effect of automatically picking and placing the membrane switch before and after processing, and enabling the feeding and discharging of the membrane switch to be synchronized.

[0033] A propulsion unit 6 installed at one end of the bracket 104 is used to automatically trigger the conveying unit 4 to work and intermittently convey the membrane switch to be processed. When the transfer unit 3 resets, it drives the propulsion unit 6 to drive the conveying unit 4, and moves a single membrane switch on the conveying unit 4 to the position of the material taking unit 2, automatically preparing for the next operation of the material taking unit 2, improving the flexibility of the membrane switch in place.

[0034] Further, refer to Figure 3 , Figure 4 and Figure 10, the material taking unit 2 includes a sealed box 201, a piston plate 202, a piston rod 203, a connecting frame 204, a clamping assembly 205 and a swing assembly 206. The top of the sealed box 201 is fixedly connected to the transfer unit 3 through the connecting frame 204. The piston plate 202 is slidably and sealingly connected inside the sealed box 201. There are two piston rods 203, and the two piston rods 203 are symmetrically fixed on the top of the piston plate 202. The end of the piston rod 203 away from the piston plate 202 slidably penetrates the top of the sealed box 201 and is fixedly connected to the output end of the swing assembly 206. A plurality of push-pull rods 207 are arranged in an array at the bottom of the piston plate 202. The end of the push-pull rod 207 away from the piston plate 202 extends below the sealed box 201 and is fixed with a U-shaped plate 208. The push-pull rod 207 is slidably sleeved with the sealed box 201 through a sealing ring. The clamping assembly 205 is installed at the bottom of the U-shaped plate 208. One end of the sealed box 201 is fixedly inserted with an air inlet pipe 209, and a second one-way valve 2010 is fixed at the end of the air inlet pipe 209 away from the sealed box 201. A plurality of groups of blowing components 2011 are evenly distributed on one side of the sealed box 201 close to the lower die base 102.

[0035] Specifically, the swing assembly 206 drives the piston rod 203 to move up and down to complete a cycle. At this time, the piston rod 203 drives the piston plate 202 to move up and down for a period. During the process of the sealed box 201 moving close to the lower die base 102, the piston plate 202 first pushes the push-pull rod 207 to move down, thereby pushing the clamping assembly 205 to move down, so that the lowest point of the clamping assembly 205 just contacts the surface of the lower die base 102. This stage is when the piston plate 202 moves from the uppermost position to the lowermost position. When the sealed box 201 returns, the piston plate 202 pushes the push-pull rod 207 to move up, thereby pulling the clamping assembly 205 to move up, so that the clamping assembly 205 moves away from the workbench 101. This stage is when the piston plate 202 moves from the lowermost position to the uppermost position, and at this time, a large amount of air will be extracted and stored in the space of the sealed box 201 below the piston plate 202.

[0036] Further, refer to Figure 4, the swing assembly 206 includes a limit seat 2061, a first rotating shaft 2062, a first gear 2063, a swing rod 2064, a first connecting rod 2065, a pulley 2066 and a transmission plate 2067. The first rotating shaft 2062 is rotatably connected to the limit seat 2061 through a bearing. The bottom of the limit seat 2061 is slidably connected to a chute formed on the gantry 104. The first gear 2063 is fixed to the end of the first rotating shaft 2062 away from the limit seat 2061. One end of the swing rod 2064 is fixed to the central end of the first gear 2063. The other end of the swing rod 2064 is fixedly connected to the first connecting rod 2065. The pulley 2066 is installed at the end of the first connecting rod 2065 away from the swing rod 2064. A groove is formed on one side of the transmission plate 2067, and the pulley 2066 is slidably connected in the groove. The transmission plate 2067 is fixed to the top of the piston rod 203. A first rack 2068 and a second rack 2069 are fixed on the gantry 104.

[0037] Specifically, during the process of the transfer unit 3 driving the movement of the sealing box 201, the first gear 2063 will also be driven to move. When the first gears 2063 on the two material taking units 2 are respectively engaged with the first rack 2068 and the second rack 2069, it will drive the first rotating shaft 2062 to rotate. The first rotating shaft 2062 drives the swing rod 2064 to swing. It should be noted that the tooth ratio of the first gear 2063 to the first rack 2068 and the second rack 2069 is two to one. Therefore, during the process from the first gear 2063 meshing with the rack to disengaging, the swing rod 2064 can just rotate half a circle. And due to the connection relationship among the pulley 2066, the first connecting rod 2065 and the transmission plate 2067, the rotation of the swing rod 2064 will be converted into a linear motion. One round-trip movement of the first gear 2063 just drives the transmission plate 2067 to move from the uppermost end to the lowermost end and then from the lowermost end to the uppermost end.

[0038] Further, please refer to Figure 5 , the clamping assembly 205 includes a second rotating shaft 2051, a threaded column 2052, a clamping plate 2053, a connecting shaft 2054 and a second gear 2055. The second rotating shaft 2051 is rotatably connected to the inside of the U-shaped plate 208 through a bearing seat. Two groups of threaded columns 2052 are symmetrically arranged. The two groups of threaded columns 2052 are respectively fixed to both ends of the second rotating shaft 2051, and the thread directions of the two groups of threaded columns 2052 are opposite. Each group of threaded columns 2052 is threadedly connected with a clamping plate 2053 through a nut. A sliding bar 2056 is fixed to the top of the clamping plate 2053, and the top of the sliding bar 2056 is slidably connected to a chute formed on the inside of the U-shaped plate 208. The connecting shaft 2054 is fixed to the end of the threaded column 2052 away from the second rotating shaft 2051. The second gear 2055 is fixedly sleeved on the connecting shaft 2054;

[0039] Among them, please refer to Figure 9, inside the mounting table 104, a first toothed plate 7 and a second toothed plate 8 are fixed. The teeth of the first toothed plate 7 are located on its upper side, and the teeth of the second toothed plate 8 are located on its lower side. The first toothed plate 7 and the second toothed plate 8 are arranged in a staggered manner; inside the mounting table 104, a third toothed plate 9 and a fourth toothed plate 10 are also fixed. The teeth of the third toothed plate 9 are located on its upper side, and the teeth of the fourth toothed plate 10 are located on its lower side. The third toothed plate 9 and the fourth toothed plate 10 are arranged in a staggered manner.

[0040] Specifically, when the two sets of material taking units 2 return to the starting position, the clamping assemblies 205 on the two sets of material taking units 2 are just located at the uppermost end. When the first set of material taking unit 2 moves in the direction of the receiving box 501, the clamping assembly 205 first moves down to the lowermost end, and then continues to move until the second gear 2055 on the clamping assembly 205 meshes with the first toothed plate 7. The rotation of the second gear 2055 will drive the threaded column 2052 to rotate, thereby driving the two clamping plates 2053 to move closer to each other to clamp the membrane switch processed on the lower die base 102 until the second gear 2055 just disengages from the first toothed plate 7, and then continues to move to the position of the second toothed plate 8. The second gear 2055 meshes with the second toothed plate 8 and rotates in reverse, and the clamping plate 2053 is loosened to allow the processed membrane switch to fall smoothly into the blanking box. Similarly, the other set of material taking unit 2 will also go through the above process, in which the second gear 2055 will mesh with the third toothed plate 9 and the fourth toothed plate 10 respectively to just convey the membrane switch to be processed onto the lower die base 102 and automatically load the material.

[0041] Further, refer to Figure 6 , the transfer unit 3 includes a transfer motor 301, a ball screw 302, a ball nut 303, a second connecting rod 304, a connecting plate 305, a slider 306 and a guide rail 307. The transfer motor 301 is fixed on the outside of the mounting table 104. The output end of the transfer motor 301 is fixedly connected to the ball screw 302 through a coupling. Both ends of the ball screw 302 are installed on the mounting table 104 through bearing seats. The ball nut 303 is threadedly sleeved on the outside of the ball screw 302. The second connecting rod 304 is fixed on the ball nut 303. One end of the second connecting rod 304 away from the ball nut 303 is fixedly connected to the connecting plate 305 through a bolt. One side of the slider 306 is fixedly connected to the connecting plate 305. The guide rail 307 is fixed on the outside of the mounting table 104. The slider 306 and the guide rail 307 are slidably connected. The connecting plate 305 is fixedly connected to the connecting frame 204 through a fixing plate;

[0042] Specifically, by starting the rotation of the transfer motor 301, the transfer motor 301 drives the ball screw 302 to rotate. The ball screw 302 drives the ball nut 303 to move. The ball nut 303 drives the connecting plate 305 to move through the second connecting rod 304, thereby driving the connecting frame 204 fixed to the connecting plate 305 to move together. The connecting frame 204 drives the material taking unit 2 to move together. The linear motion mode of the ball screw 302 can achieve displacement control with a micron-level or even higher precision, ensuring that the two material taking units 2 can smoothly reach the designated position and stop.

[0043] Embodiment 2: Please refer to Figure 7 and Figure 8 , this embodiment further illustrates Embodiment 1. The illustrated transfer unit 4 includes a transfer roller 401, a third rotating shaft 402, a conveyor belt 403, a third gear 404, and a fourth gear 405. There are multiple transfer rollers 401, and the multiple transfer rollers 401 are evenly distributed on both sides of the length direction of the gantry 104. The third rotating shaft 402 is fixed at both ends of the transfer roller 401. The third rotating shaft 402 is rotatably connected to the gantry 104 through a bearing. The third gear 404 is fixed to one of the third rotating shafts 402. The fourth gear 405 is meshed and connected to the third gear 404. A fourth rotating shaft 406 is fixed inside the middle hole of the fourth gear 405. One end of the fourth rotating shaft 406 is rotatably connected to the gantry 104 through a bearing. The conveyor belt 403 is installed outside the transfer roller 401. The propulsion unit 6 is provided on one side of the fourth gear 405.

[0044] Among them, the propulsion unit 6 includes a ratchet wheel 601, a leaf spring 602, a detent 603, a pawl 604, a push rod 605, and a limiting rod 606. The ratchet wheel 601 is fixed to one end of the fourth rotating shaft 406. One end of the detent 603 is movably clamped in the tooth groove of the ratchet wheel 601. The leaf spring 602 is elastically connected to one side of the detent 603. One end of the leaf spring 602 is fixed with a fixing frame 608. The fixing frame 608 is fixed to the gantry 104. The end of the detent 603 away from the ratchet wheel 601 is rotatably connected to the fixing frame 608. One end of the pawl 604 is movably clamped in the tooth groove of the ratchet wheel 601. The end of the pawl 604 away from the ratchet wheel 601 is fixed to the push rod 605. The end of the push rod 605 away from the pawl 604 is rotatably connected to a moving plate 607. The moving plate 607 is fixed to the connecting frame 204. The limiting rod 606 is fixed to the moving plate 607 through a fixing block. The push rod 605 is lapped on the limiting rod 606.

[0045] Specifically, when the transfer unit 3 drives the moving plate 607 and the connecting frame 204 to reset, before the reset, the pawl 604 will enter the tooth groove of the ratchet wheel 601, thereby pushing the ratchet wheel 601 to rotate a certain angle. Until the reset is completed, the stop pawl 603 on one side of the ratchet wheel 601 will automatically snap into the tooth groove of the ratchet wheel 601 again under the elastic force of the leaf spring 602. When the ratchet wheel 601 rotates, it will drive the fourth rotating shaft 406 to rotate. The fourth rotating shaft 406 drives the fourth gear 405 to rotate, and the fourth gear 405 drives the third gear 404 to rotate, thereby driving the third rotating shaft 402 to rotate. The third rotating shaft 402 drives the transmission roller to rotate, and the transmission roller drives the conveyor belt 403 to move a certain distance. This distance just conveys the membrane switch placed on it for a certain distance, and a single membrane switch to be processed moves to the position of the material taking unit 2, automatically preparing for the next operation of the material taking unit 2, improving the flexibility of the membrane switch in place.

[0046] Embodiment 3: Please refer to Figure 3 and Figure 10 , this embodiment further illustrates other embodiments. The material taking unit 2 in the figure includes a sealed box 201, a piston plate 202, a piston rod 203, a connecting frame 204, a clamping assembly 205 and a swinging assembly 206. The top of the sealed box 201 is fixedly connected to the transfer unit 3 through the connecting frame 204. The piston plate 202 is slidably and sealingly connected inside the sealed box 201. There are two piston rods 203, and the two piston rods 203 are symmetrically fixed on the top of the piston plate 202. The end of the piston rod 203 away from the piston plate 202 slidably penetrates the top of the sealed box 201 and is fixedly connected to the output end of the swinging assembly 206. A plurality of push rods 207 are arranged in an array at the bottom of the piston plate 202. The end of the push rod 207 away from the piston plate 202 extends below the sealed box 201 and is fixed with a U-shaped plate 208. The push rod 207 is slidably sleeved with the sealed box 201 through a sealing ring. The clamping assembly 205 is installed at the bottom of the U-shaped plate 208. One end of the sealed box 201 is fixedly inserted with an air inlet pipe 209, and a second one-way valve 2010 is fixed at the end of the air inlet pipe 209 away from the sealed box 201. A plurality of groups of blowing assemblies 2011 are evenly distributed on one side of the sealed box 201 close to the lower die base 102; the blowing assembly 2011 includes an air delivery pipe 20111, a first one-way valve 20112 and an air outlet pipe 20113. The air delivery pipe 20111 is fixedly inserted on one side of the sealed box 201. The air outlet pipe 20113 is fixedly connected to the air delivery pipe 20111 through the first one-way valve 20112, and the end of the air outlet pipe 20113 away from the first one-way valve 20112 is arranged in a curved downward state.

[0047] Specifically, during the process of the piston in the sealed box 201 moving from the uppermost end to the lowermost end, the intake pipe 209 does not introduce air into the sealed box 201 under the action of the second one-way valve 2010. The piston plate 202 compresses the air below, causing the air to be discharged from the air delivery pipe 20111 in the form of a high-pressure air flow and blown out from the air outlet pipe 20113. Since some structures on the membrane switch will deform during the embossing process, generating a small amount of plastic particles, the air flow blown out from the air outlet pipe 20113 can clean the particles remaining on the surface of the membrane switch. Additionally, during the process of the piston in the sealed box 201 moving from the lowermost end to the uppermost end, the intake pipe 209 introduces air into the sealed box 201 under the action of the second one-way valve 2010. The upward movement of the piston plate 202 is equivalent to charging gas into the sealed box 201 again, thus preparing the air flow supply for cleaning the next membrane switch.

[0048] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stamping machine for membrane switches, comprising: a machine body (1), a workbench (101) and a lower die base (102), wherein the lower die base (102) is fixed at the exact center position on the top of the workbench (101), an upper die base (103) is arranged directly above the lower die base (102), and the workbench (101) is fixed on the machine body (1); It is characterized in that it further comprises: two sets of brackets (104) symmetrically fixed on both sides of the lower die base (102), a conveying unit (4) for conveying the membrane switch is arranged between the two sets of brackets (104), a transfer unit (3) is installed on one side of the bracket (104) away from the lower die base (102), the output end of the transfer unit (3) is fixedly connected with two sets of material taking units (2), the two sets of material taking units (2) are distributed front and back and are respectively used for automatically picking and placing the membrane switch before and after processing; a propulsion unit (6) installed at one end of the bracket (104), which is used to automatically trigger the conveying unit (4) to work and intermittently convey the membrane switch to be processed; a support plate (5) fixed on one side of the machine body (1) away from the conveying unit (4), and a receiving box (501) is arranged on the support plate (5); The material taking unit (2) comprises a sealed box (201), a piston plate (202), a piston rod (203), a connecting frame (204), a clamping assembly (205) and a swinging assembly (206). The top of the sealed box (201) is fixedly connected with the transfer unit (3) through the connecting frame (204). The piston plate (202) is slidably and sealingly connected inside the sealed box (201). There are two piston rods (203), and the two piston rods (203) are symmetrically fixed on the top of the piston plate (202). One end of the piston rod (203) away from the piston plate (202) slidably penetrates through the top of the sealed box (201) and is fixedly connected with the output end of the swinging assembly (206). A plurality of push rods (207) are arranged in an array at the bottom of the piston plate (202). One end of the push rod (207) away from the piston plate (202) extends below the sealed box (201) and is fixed with a U-shaped plate (208). The push rod (207) is slidably sleeved with the sealed box (201) through a sealing ring. The clamping assembly (205) is installed at the bottom of the U-shaped plate (208). One end of the sealed box (201) is fixedly inserted with an air inlet pipe (209), and a second one-way valve (2010) is fixed at the end of the air inlet pipe (209) away from the sealed box (201). A plurality of groups of blowing components (2011) are evenly distributed on one side of the sealed box (201) close to the lower die base (102); The blowing component (2011) includes an air delivery pipe (20111), a first one-way valve (20112), and an air outlet pipe (20113). The air delivery pipe (20111) is fixedly inserted into one side of the sealed box (201). The air outlet pipe (20113) is fixedly connected to the air delivery pipe (20111) through the first one-way valve (20112). One end of the air outlet pipe (20113) away from the first one-way valve (20112) is arranged in a downwardly bent state.

2. The embossing machine for membrane switch according to claim 1, wherein: The swinging component (206) includes a limit seat (2061), a first rotating shaft (2062), a first gear (2063), a swing rod (2064), a first connecting rod (2065), a pulley (2066), and a transmission plate (2067). The first rotating shaft (2062) is rotatably connected to the limit seat (2061) through a bearing. The bottom of the limit seat (2061) is slidably connected to a chute formed on the frame (104). The first gear (2063) is fixed to one end of the first rotating shaft (2062) away from the limit seat (2061). One end of the swing rod (2064) is fixed to the central end of the first gear (2063). The other end of the swing rod (2064) is fixedly connected to the first connecting rod (2065). The pulley (2066) is installed at one end of the first connecting rod (2065) away from the swing rod (2064). A groove is formed on one side of the transmission plate (2067). The pulley (2066) is slidably connected in the groove. The transmission plate (2067) is fixed to the top of the piston rod (203). A first rack (2068) and a second rack (2069) are fixed to the frame (104).

3. A debossing machine for a membrane switch according to claim 1, characterized in that: The clamping component (205) includes a second rotating shaft (2051), a threaded column (2052), a clamping plate (2053), a connecting shaft (2054), and a second gear (2055). The second rotating shaft (2051) is rotatably connected to the inner side of the U-shaped plate (208) through a bearing seat. Two groups of threaded columns (2052) are symmetrically arranged. The two groups of threaded columns (2052) are respectively fixed to both ends of the second rotating shaft (2051), and the thread directions of the two groups of threaded columns (2052) are opposite. A clamping plate (2053) is threadedly connected to each threaded column (2052) through a nut. A slide bar (2056) is fixed to the top of the clamping plate (2053). The top of the slide bar (2056) is slidably connected to a chute formed on the inner side of the U-shaped plate (208). The connecting shaft (2054) is fixed to one end of the threaded column (2052) away from the second rotating shaft (2051). The second gear (2055) is fixedly sleeved on the connecting shaft (2054).

4. A embossing machine for membrane switches according to claim 1, wherein: The transfer unit (3) includes a transfer motor (301), a ball screw (302), a ball nut (303), a second connecting rod (304), a connecting plate (305), a slider (306) and a guide rail (307). The transfer motor (301) is fixed outside the gantry (104). The output end of the transfer motor (301) is fixedly connected to the ball screw (302) through a coupling. Both ends of the ball screw (302) are installed on the gantry (104) through bearing seats. The ball nut (303) is threadedly sleeved outside the ball screw (302). The second connecting rod (304) is fixed on the ball nut (303). One end of the second connecting rod (304) away from the ball nut (303) is fixedly connected to the connecting plate (305) through a bolt. One side of the slider (306) is fixedly connected to the connecting plate (305). The guide rail (307) is fixed outside the gantry (104). The slider (306) is slidably connected to the guide rail (307). The connecting plate (305) is fixedly connected to the connecting frame (204) through a fixing plate.

5. A embossing machine for membrane switches according to claim 1, wherein: The conveying unit (4) includes conveying rollers (401), a third rotating shaft (402), a conveyor belt (403), a third gear (404) and a fourth gear (405). A plurality of the conveying rollers (401) are provided, and the plurality of conveying rollers (401) are evenly distributed on both sides in the length direction of the gantry (104). The third rotating shaft (402) is fixed at both ends of the conveying roller (401). The third rotating shaft (402) is rotatably connected to the gantry (104) through a bearing. The third gear (404) is fixed to one of the third rotating shafts (402). The fourth gear (405) is meshed with the third gear (404). A fourth rotating shaft (406) is fixed in the middle hole of the fourth gear (405). One end of the fourth rotating shaft (406) is rotatably connected to the gantry (104) through a bearing. The conveyor belt (403) is installed outside the conveying rollers (401). The propulsion unit (6) is arranged on one side of the fourth gear (405).

6. A embossing machine for membrane switches according to claim 5, characterized in that: The propulsion unit (6) includes a ratchet wheel (601), a leaf spring (602), a detent pawl (603), a pawl (604), a push rod (605) and a limit rod (606). The ratchet wheel (601) is fixed to one end of the fourth rotating shaft (406). One end of the detent pawl (603) is movably clamped with the tooth groove of the ratchet wheel (601). The leaf spring (602) is elastically connected to one side of the detent pawl (603). A fixing bracket (608) is fixed to one end of the leaf spring (602). The fixing bracket (608) is fixedly connected to the frame (104). The end of the detent pawl (603) away from the ratchet wheel (601) is rotatably connected to the fixing bracket (608). One end of the pawl (604) is movably clamped with the tooth groove of the ratchet wheel (601). The end of the pawl (604) away from the ratchet wheel (601) is fixedly connected to the push rod (605). A moving plate (607) is rotatably connected to the end of the push rod (605) away from the pawl (604). The moving plate (607) is fixedly connected to the connecting frame (204). The limit rod (606) is fixedly connected to the moving plate (607) through a fixing block. The push rod (605) is lapped on the limit rod (606).

7. A embossing machine for membrane switches according to claim 1, characterized in that: A first toothed plate (7) and a second toothed plate (8) are fixed to the inner side of the frame (104). The teeth of the first toothed plate (7) are located on its upper side. The teeth of the second toothed plate (8) are located on its lower side. The first toothed plate (7) and the second toothed plate (8) are arranged in a staggered manner.

8. A debossing machine for a membrane switch according to claim 7, characterized in that: A third toothed plate (9) and a fourth toothed plate (10) are also fixed to the inner side of the frame (104). The teeth of the third toothed plate (9) are located on its upper side. The teeth of the fourth toothed plate (10) are located on its lower side. The third toothed plate (9) and the fourth toothed plate (10) are arranged in a staggered manner.

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