Embossing machine for membrane switch

Abstract

The invention relates to the technical field of membrane switch processing equipment, and discloses a belling machine for a membrane switch, the belling machine comprises a machine body, a workbench and a lower die holder, the lower die holder is fixed at the center of the top of the workbench, an upper die holder is arranged right above the lower die holder, and the workbench is fixed on the machine body; the two sets of stands are symmetrically fixed to the two sides of the lower die base, a conveying unit used for conveying the membrane switch is arranged between the two sets of stands, a transferring unit is installed on the sides, away from the lower die base, of the stands, and the output end of the transferring unit is fixedly connected with two sets of material taking units; through the designed conveying unit, the two sets of material taking units and the transfer unit, the effect of automatically taking and placing the membrane switches before machining and after machining is achieved, discharging and feeding of the membrane switches can be kept synchronous, and compared with an existing belling machine adopting a manual material taking mode, the automation degree is higher, and the production efficiency is improved. And the working efficiency of the belling machine of the membrane switch is improved.

Description

Technical Field

[0001] The invention relates to the technical field of membrane switch processing equipment, in particular to an embossing machine for a membrane switch. Background Art

[0002] Membrane switch is an operating system that integrates key functions, indicating elements, and instrument panels. It is widely used in electronic communications, electronic measuring instruments, industrial control, medical equipment, automotive industry, smart toys, household appliances and other fields.

[0003] In the process of using an embossing machine to emboss a membrane switch, an operator is required to change materials under the press table. This material changing method may cause the hydraulic cylinder to lose control, resulting in injuries to the operator. At the same time, the space for changing materials under the press table is small, which affects the speed of changing materials for the membrane switch. In order to facilitate the operator to place an unprocessed membrane switch on the lower press table, the existing Chinese patent document CN202222776101.0 discloses a membrane switch embossing machine. By setting a material changing mechanism, the operator is prevented from taking materials under the upper press table, thereby improving the safety of the operator's work. At the same time, the existing Chinese patent document CN202123054823.7 discloses a membrane switch embossing machine. The lower die seat is driven to extend and retract by an electric telescopic rod, so that the lower die seat can be moved under the action of a slide groove and a slide rail, thereby realizing the automatic movement of the lower die seat, thereby facilitating the operator to take and place the membrane switch, and preventing the hydraulic cylinder from losing control, resulting in injuries to the operator. In the two solutions proposed above, although the equipment can realize the automatic pick-and-place function of the membrane switch, in the actual operation process, when it is necessary to take out the processed membrane switch, it is still necessary to rely on manual picking and placing it in the designated position. This operation method is obviously inefficient when processing membrane switches in large quantities and cannot meet the high-efficiency production needs; in addition, in the process of using the embossing machine to emboss the membrane switch, it is usually necessary to heat the membrane switch first. The manual method of taking the material is not only inefficient, but also during the heating process, the operator's hands are easily affected by the high temperature, which poses certain safety hazards. Therefore, this manual material taking method has many limitations in actual applications, which not only affects production efficiency, but also may cause harm to the operator. Summary of the invention

[0004] The object of the present invention is to provide an embossing machine for a membrane switch to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an embossing machine for a membrane switch, comprising a machine body, a workbench and a lower die base, the lower die base being fixed at the top center position of the workbench, an upper die base being provided directly above the lower die base, and the workbench being fixed on the machine body; further comprising: two groups of stands symmetrically fixed on both sides of the lower die base, a conveying unit for conveying the membrane switch being provided between the two groups of stands, a transfer unit being installed on the side of the stand away from the lower die base, two groups of material picking units being fixedly connected to the output end of the transfer unit, the two groups of material picking units being distributed front and back, and respectively used for automatically picking up and placing the membrane switches before and after processing; a propulsion unit installed at one end of the stand, which is used to automatically trigger the conveying unit to work and intermittently convey the membrane switches to be processed; a support plate fixed on the side of the machine body away from the conveying unit, a material receiving box being provided on the support plate.

[0006] Preferably, the material picking unit includes a sealing box, a piston plate, a piston rod, a connecting frame, a clamping assembly and a swinging assembly. The top of the sealing box is fixedly connected to the transfer unit through the connecting frame, and the piston plate is slidably and sealingly connected to the inside of the sealing box. Two piston rods are provided, 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 slides through the top of the sealing box and is fixedly connected to the output end of the swinging assembly. A plurality of push-pull rods are distributed in an array at the bottom of the piston plate. The end of the push-pull rod away from the piston plate extends to the bottom of the sealing box and is fixed with a U-shaped plate. The push-pull rods and the sealing box are slidably connected via a sealing ring. The clamping assembly is installed at the bottom of the U-shaped plate. An air intake pipe is fixedly inserted at one end of the sealing box, and a No. 2 one-way valve is fixed at the end of the air intake pipe away from the sealing box. A plurality of blowing assemblies are evenly distributed on one side of the sealing box close to the lower die base.

[0007] Preferably, the swing assembly includes a limit seat, a No. 1 rotating shaft, a No. 1 gear, a rocker arm, a No. 1 connecting rod, a pulley and a transmission plate, the No. 1 rotating shaft is rotatably connected to the limit seat through a bearing, the bottom of the limit seat is slidably connected to a slide groove provided on the platform, the No. 1 gear is fixed to an end of the No. 1 rotating shaft away from the limit seat, one end of the rocker arm is fixed to the middle axis end of the No. 1 gear, the other end of the rocker arm is fixedly connected to the No. 1 connecting rod, the pulley is installed on an end of the No. 1 connecting rod away from the rocker arm, a groove is provided on one side of the transmission plate, the pulley is slidably connected in the groove, the transmission plate is fixed to the top of the piston rod, and a No. 1 rack and a No. 2 rack are fixed on the platform.

[0008] Preferably, the clamping assembly includes a No. 2 rotating shaft, a threaded column, a clamping plate, a connecting shaft and a No. 2 gear. The No. 2 rotating shaft is rotatably connected to the inner side of the U-shaped plate through a bearing seat. The threaded column is symmetrically provided with two groups. The two groups of threaded columns are respectively fixed at two ends of the No. 2 rotating shaft, and the thread rotation directions of the two groups of threaded columns are opposite. A clamping plate is connected to each group of threaded columns via a nut thread. A sliding bar is fixed to the top of the clamping plate. The top of the sliding bar is slidably connected to a sliding groove provided on the inner side of the U-shaped plate. The connecting shaft is fixed to an end of the threaded column away from the No. 2 rotating shaft, and the No. 2 gear is fixedly sleeved on the connecting shaft.

[0009] Preferably, the blowing assembly includes an air supply pipe, a No. 1 one-way valve and an air outlet pipe. The air supply pipe is fixedly inserted on one side of the sealing box. The air outlet pipe is fixedly connected to the air supply pipe through the No. 1 one-way valve. The end of the air outlet pipe away from the No. 1 one-way valve is arranged in a bent downward state.

[0010] 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, and the output end of the transfer motor is fixedly connected to the ball screw through a coupling. Both ends of the ball screw are mounted on the platform through bearing seats, and the ball nut is threadedly sleeved on the outside of the ball screw. The second connecting rod is fixed on the ball nut, and one end of the second connecting rod away from the ball nut is fixedly connected to the connecting plate through bolts, one side of the slider is fixedly connected to the connecting plate, and the guide rail is fixed to the outside of the platform, the slider and the guide rail are slidably connected, and the connecting plate is fixedly connected to the connecting frame through a fixing plate.

[0011] Preferably, the conveying unit includes a conveying roller, a No. 3 rotating shaft, a conveyor belt, a No. 3 gear and a No. 4 gear. There are multiple conveying rollers, and the multiple conveying rollers are evenly distributed on both sides of the length direction of the platform. The No. 3 rotating shaft is fixed at both ends of the conveying roller, and the No. 3 rotating shaft is rotatably connected to the platform through a bearing. The No. 3 gear is fixed to one of the No. 3 rotating shafts, and the No. 4 gear is meshed and connected to the No. 3 gear. The No. 4 rotating shaft is fixed in the middle hole of the No. 4 gear, and one end of the No. 4 rotating shaft is rotatably connected to the platform through a bearing. The conveyor belt is installed on the outside of the conveying roller, and the propulsion unit is arranged on one side of the No. 4 gear.

[0012] Preferably, the propulsion unit includes a ratchet, a leaf spring, a pawl, a pawl, a push rod and a limiting rod, the ratchet is fixed to one end of the fourth rotating shaft, one end of the pawl is movably engaged with the tooth groove of the ratchet, the leaf spring is elastically connected to one side of the pawl, one end of the leaf spring is fixed to a fixing frame, the fixing frame is fixedly connected to the stand, the end of the pawl away from the ratchet is rotatably connected to the fixing frame, one end of the pawl is movably engaged with the tooth groove of the ratchet, the end of the pawl away from the ratchet is fixedly connected to the push rod, the end of the push rod away from the pawl is rotatably connected to a movable plate, the movable plate is fixedly connected to the connecting frame, the limiting rod is fixedly connected to the movable plate via a fixing block, and the push rod is overlapped on the limiting rod.

[0013] Preferably, a first tooth plate and a second tooth plate are fixed on the inner side of the stand, the teeth of the first tooth plate are located on the upper side thereof, the teeth of the second tooth plate are located on the lower side thereof, and the first tooth plate and the second tooth plate are staggered.

[0014] Preferably, a third tooth plate and a fourth tooth plate are also fixed on the inner side of the stand, the teeth of the third tooth plate are located on the upper side thereof, the teeth of the fourth tooth plate are located on the lower side thereof, and the third tooth plate and the fourth tooth plate are staggered.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention improves the existing embossing machine, and realizes the effect of automatically picking up and placing the membrane switch before and after processing through the designed transmission unit, two sets of material picking units and transfer units, so that the unloading and loading of the membrane switch can be kept synchronous. Compared with the existing embossing machine that uses manual material picking, the degree of automation is higher, and the working efficiency of the membrane switch embossing machine is improved.

[0016] 2. In the present invention, the transmission unit and the propulsion unit cooperate with each other. When the transfer unit is reset, the propulsion unit drives the transmission unit and moves the single membrane switch on the transmission unit to the position of the material picking unit, automatically preparing for the next work of the material picking unit, thereby improving the flexibility of the membrane switch in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention; Figure 3 It is a structural schematic diagram of the material taking unit of the present invention; Figure 4 It is a structural schematic diagram of the swing assembly of the present invention; Figure 5 is a side view of the clamping assembly of the present invention; Figure 6 It is a structural schematic diagram of the transfer unit of the present invention; Figure 7 It is a structural schematic diagram of the transmission unit of the present invention; Figure 8 It is a structural schematic diagram of the propulsion unit of the present invention; Fig. 9 Schematic diagram of the relative positions of the first rack, the second rack, the first tooth plate, the second tooth plate, the third tooth plate and the fourth tooth plate in the present invention; Fig.10 It is a schematic structural diagram of the blowing assembly of the present invention.

[0018] In the figure: 1, machine body; 101, workbench; 102, lower die base; 103, upper die base; 104, stand; 2, material taking unit; 201, sealing box; 202, piston plate; 203, piston rod; 204, connecting frame; 205, clamping assembly; 2051, No. 2 rotating shaft; 2052, threaded column; 2053, clamping plate; 2054, connecting shaft; 2055, No. 2 gear; 205 6. Slide bar; 206. Swing assembly; 2061. Limit seat; 2062. No. 1 rotating shaft; 2063. No. 1 gear; 2064. Rocker; 2065. No. 1 connecting rod; 2066. Pulley; 2067. Transmission plate; 2068. No. 1 rack; 2069. No. 2 rack; 207. Push-pull rod; 208. U-shaped plate; 209. Intake pipe; 2010. No. 2 check valve; 201 1. Blowing assembly; 20111. Air pipe; 20112. No. 1 one-way valve; 20113. Air outlet pipe; 3. Transfer unit; 301. Transfer motor; 302. Ball screw; 303. Ball nut; 304. No. 2 connecting rod; 305. Connecting plate; 306. Slider; 307. Guide rail; 4. Conveying unit; 401. Conveying roller; 402. No. 3 rotating shaft; 403. Conveying belt; 404, gear No. 3; 405, gear No. 4; 406, rotating shaft No. 4; 5, supporting plate; 501, receiving box; 6, pushing unit; 601, ratchet; 602, leaf spring; 603, stop pawl; 604, ratchet; 605, push rod; 606, limit rod; 607, moving plate; 608, fixing frame; 7, gear plate No. 1; 8, gear plate No. 2; 9, gear plate No. 3; 10, gear plate No. 4. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1 and Figure 2 , a embossing machine for a membrane switch shown in the figure comprises a machine body 1, a workbench 101 and a lower die base 102, the lower die base 102 is fixed at the top center of the workbench 101, an upper die base 103 is arranged just above the lower die base 102, the workbench 101 is fixed on the machine body 1, and the upper die base 103 moves downward and cooperates with the lower die base 102, so as to emboss the membrane switch; The machine body 102 also includes two sets of racks 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 racks 104, a transfer unit 3 is installed on the side of the rack 104 away from the lower die base 102, and 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 to automatically take and place 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, and a material receiving box 501 is arranged on the support plate 5, and the material taking unit 2 is driven by the transfer unit 3 to move horizontally, close to the work The material taking unit 2 of the table 101 automatically moves down and clamps the processed membrane switch, while the other set of material taking units 2 also moves down and clamps the next membrane switch to be processed. When the process continues to move to a suitable position, the processed membrane switch automatically releases the clamping to complete the unloading and falls into the receiving box 501. The next membrane switch to be processed is also transferred to the top of the lower die base 102 and automatically put down, so as to achieve the effect of automatically taking and placing the membrane switch before and after processing, and enable the unloading and loading of the membrane switch to be carried out synchronously. The propulsion unit 6 installed at one end of the platform 104 is used to automatically trigger the transmission unit 4 to work and intermittently transport the membrane switch to be processed. When the transfer unit 3 is reset, the propulsion unit 6 drives the transmission unit 4 and moves the single membrane switch on the transmission unit 4 to the position of the material picking unit 2, automatically preparing for the next work of the material picking unit 2, thereby improving the flexibility of the membrane switch placement.

[0021] For further information, see Figure 3 , Figure 4 and Fig.10The material taking unit 2 includes a sealing 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 sealing box 201 is fixedly connected to the transfer unit 3 through the connecting frame 204. The piston plate 202 is slidably and sealedly connected to the inside of the sealing box 201. There are two piston rods 203, which are symmetrically fixed on the top of the piston plate 202. The end of the piston rod 203 away from the piston plate 202 slides through the top of the sealing box 201 and is fixedly connected to the output end of the swinging assembly 206. The piston plate 2 02, a plurality of push-pull rods 207 are distributed in an array at the bottom, and one end of the push-pull rod 207 away from the piston plate 202 extends to the bottom of the sealing box 201 and is fixed with a U-shaped plate 208. The push-pull rod 207 and the sealing box 201 are slidably connected via a sealing ring, and the clamping assembly 205 is installed at the bottom of the U-shaped plate 208. An air inlet pipe 209 is fixedly inserted at one end of the sealing box 201, and a No. 2 one-way valve 2010 is fixed at one end of the air inlet pipe 209 away from the sealing box 201, and a plurality of blowing assemblies 2011 are evenly distributed on one side of the sealing box 201 close to the lower mold base 102.

[0022] Specifically, the piston rod 203 is driven up and down to complete a cycle through the swing assembly 206. At this time, the piston rod 203 drives the piston plate 202 to move up and down for a cycle. When the sealing box 201 moves close to the lower die seat 102, the piston plate 202 will first push the push-pull rod 207 to move downward, thereby pushing the clamping assembly 205 to move downward, so that the lowest point of the clamping assembly 205 just contacts the surface of the lower die seat 102. At this stage, the piston plate 202 moves from the uppermost end to the lowermost end. When the sealing box 201 returns, the piston plate 202 pushes the push-pull rod 207 to move upward, thereby pulling the clamping assembly 205 to move upward, and the clamping assembly 205 moves away from the workbench 101. At this stage, the piston plate 202 moves from the lowermost end to the uppermost end, and at this time, a large amount of air will be extracted from the space of the sealing box 201 below the piston plate 202 for storage.

[0023] For further information, see Figure 4The 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 slide groove provided on the stand 104. The first gear 2063 is fixed to one end of the first rotating shaft 2062 away from the limit seat 2061. The swing rod 2064 is connected to the first connecting rod 2065, a pulley 2066 and a transmission plate 2067. One end of 064 is fixed to the middle axis end of gear No. 1 2063, the other end of the rocker arm 2064 is fixedly connected to the connecting rod No. 1 2065, the pulley 2066 is installed on the end of the connecting rod No. 1 2065 away from the rocker arm 2064, a groove is provided 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, and the rack No. 1 2068 and the rack No. 2 2069 are fixed on the stand 104.

[0024] Specifically, when the transfer unit 3 drives the sealing box 201 to move, the No. 1 gear 2063 will also be driven to move. When the No. 1 gear 2063 on the two sets of material taking units 2 are respectively engaged with the No. 1 rack 2068 and the No. 2 rack 2069, the No. 1 rotating shaft 2062 will be driven to rotate, and the No. 1 rotating shaft 2062 will drive the swing rod 2064 to swing. It should be noted that the gear ratio of the No. 1 gear 2063 to the No. 1 rack 2068 and the No. 2 rack 2069 is two to one, so from the engagement to the disengagement of the No. 1 gear 2063 and the rack, the swing rod 2064 can just rotate half a circle, and the connection relationship between the pulley 2066, the No. 1 connecting rod 2065 and the transmission plate 2067 will convert the rotation of the swing rod 2064 into linear motion, and the back and forth movement of the No. 1 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.

[0025] For further information, see Figure 5 The clamping assembly 205 includes a No. 2 rotating shaft 2051, a threaded column 2052, a clamping plate 2053, a connecting shaft 2054 and a No. 2 gear 2055. The No. 2 rotating shaft 2051 is rotatably connected to the inner side of the U-shaped plate 208 through a bearing seat. The threaded column 2052 is symmetrically provided with two groups. The two groups of threaded columns 2052 are respectively fixed at the two ends of the No. 2 rotating shaft 2051, and the thread rotation directions of the two groups of threaded columns 2052 are opposite. Each group of threaded columns 2052 is connected to a clamping plate 2053 through a nut thread. A sliding bar 2056 is fixed on the top of the clamping plate 2053. The top of the sliding bar 2056 is slidably connected to the sliding groove opened on the inner side of the U-shaped plate 208. The connecting shaft 2054 is fixed to the end of the threaded column 2052 away from the No. 2 rotating shaft 2051, and the No. 2 gear 2055 is fixedly sleeved with the connecting shaft 2054. Among them, see Fig. 9A first tooth plate 7 and a second tooth plate 8 are fixed to the inner side of the frame 104, the teeth of the first tooth plate 7 are located on the upper side thereof, the teeth of the second tooth plate 8 are located on the lower side thereof, and the first tooth plate 7 and the second tooth plate 8 are staggered; a third tooth plate 9 and a fourth tooth plate 10 are also fixed to the inner side of the frame 104, the teeth of the third tooth plate 9 are located on the upper side thereof, the teeth of the fourth tooth plate 10 are located on the lower side thereof, and the third tooth plate 9 and the fourth tooth plate 10 are staggered.

[0026] Specifically, when the two groups of material taking units 2 return to the starting position, the clamping components 205 on the two groups of material taking units 2 are just located at the uppermost end. When the first group of material taking units 2 moves toward the receiving box 501, the clamping component 205 first moves down to the lowermost end, and then moves to the second gear 2055 on the clamping component 205 and the first gear plate 7 to mesh. 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, so as to press the film processed on the lower die base 102. The switch is clamped until the second gear 2055 just disengages from the first gear plate 7, and then continues to move to the position of the second gear plate 8, the second gear 2055 and the second gear plate 8 are meshed and reversed, the clamping plate 2053 is released, and the processed membrane switch is smoothly dropped into the blanking box. Similarly, another set of material picking units 2 will also go through the above process, wherein the second gear 2055 will respectively mesh with the third gear plate 9 and the fourth gear plate 10 to transport the membrane switch to be processed just to the lower die base 102 and automatically load it.

[0027] For further information, see 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 to the outside of the platform 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 with the platform 104 through a bearing seat. 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 by bolts. One side of the slider 306 is fixedly connected to the connecting plate 305. The guide rail 307 is fixed to the outside of the platform 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. Specifically, by starting the transfer motor 301 to rotate, the transfer motor 301 drives the ball screw 302 to rotate, the ball screw 302 drives the ball nut 303 to move, and 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, and the connecting frame 204 drives the material picking unit 2 to move together. The linear motion mode of the ball screw 302 can achieve micron-level or even higher precision displacement control, ensuring that the two groups of material picking units 2 can smoothly reach the designated position and stop.

[0028] Example 2: Please refer to Figure 7 and Figure 8 , this embodiment further explains the first embodiment, the transmission unit 4 in the figure includes a transmission roller 401, a third rotating shaft 402, a transmission belt 403, a third gear 404 and a fourth gear 405, a plurality of transmission rollers 401 are provided, and the plurality of transmission rollers 401 are evenly distributed on both sides of the length direction of the frame 104, the third rotating shaft 402 is fixed at both ends of the transmission roller 401, the third rotating shaft 402 is rotatably connected to the frame 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 in the middle hole of the fourth gear 405, one end of the fourth rotating shaft 406 is rotatably connected to the frame 104 through a bearing, the transmission belt 403 is installed on the outside of the transmission roller 401, and the propulsion unit 6 is arranged on one side of the fourth gear 405.

[0029] The propulsion unit 6 includes a ratchet 601, a leaf spring 602, a stop pawl 603, a pawl 604, a push rod 605 and a limit rod 606. The ratchet 601 is fixed to one end of the fourth shaft 406. One end of the stop pawl 603 is movably engaged with the tooth groove of the ratchet 601. The leaf spring 602 is elastically connected to one side of the stop pawl 603. One end of the leaf spring 602 is fixed with a fixing frame 608. The fixing frame 608 is fixedly connected to the stand 104. The stop pawl 603 is far away One end away from the ratchet 601 is rotatably connected to the fixed frame 608, one end of the pawl 604 is movably engaged with the tooth groove of the ratchet 601, the end of the pawl 604 away from the ratchet 601 is fixedly connected to the push rod 605, the end of the push rod 605 away from the pawl 604 is rotatably connected to the movable plate 607, the movable plate 607 is fixedly connected to the connecting frame 204, the limiting rod 606 is fixedly connected to the movable plate 607 through the fixed block, and the push rod 605 is overlapped on the limiting rod 606.

[0030] 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 601, thereby pushing the ratchet 601 to rotate a certain angle. After the reset is completed, the stop pawl 603 on one side of the ratchet 601 will automatically snap into the tooth groove of the ratchet 601 again under the elastic force of the leaf spring 602. The rotation of the ratchet 601 will drive the fourth shaft 406 to rotate, the fourth shaft 406 drives the fourth gear 405 to rotate, the fourth gear 405 drives the third gear 404 to rotate, thereby driving the third shaft 402 to rotate, the third shaft 402 drives the transmission roller to rotate, and the transmission roller drives the conveyor belt 403 to move a certain distance, which is just enough to transport the membrane switch placed on it for a certain distance. The single membrane switch to be processed is moved to the position of the material picking unit 2, and is automatically prepared for the next work of the material picking unit 2, thereby improving the flexibility of the membrane switch in place.

[0031] Example 3: Please refer to Figure 3 and Fig.10 , this embodiment further illustrates other embodiments. The material taking unit 2 shown in the figure includes a sealing 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 sealing box 201 is fixedly connected to the transfer unit 3 through the connecting frame 204. The piston plate 202 is slidably and sealedly connected to the inside of the sealing 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 slides through the top of the sealing box 201 and is fixedly connected to the output end of the swinging assembly 206. A plurality of push-pull rods 207 are distributed 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 to the bottom of the sealing box 201 and is fixed with a U-shaped The plate 208, the push-pull rod 207 and the sealing box 201 are slidably connected through a sealing ring, the clamping assembly 205 is installed at the bottom of the U-shaped plate 208, an air inlet pipe 209 is fixedly inserted at one end of the sealing box 201, and a No. 2 one-way valve 2010 is fixed at the end of the air inlet pipe 209 away from the sealing box 201, and a plurality of groups of blowing assemblies 2011 are evenly distributed on the side of the sealing box 201 close to the lower mold base 102; the blowing assembly 2011 includes an air supply pipe 20111, a No. 1 one-way valve 20112 and an air outlet pipe 20113, the air supply pipe 20111 is fixedly inserted at one side of the sealing box 201, the air outlet pipe 20113 is fixedly connected to the air supply pipe 20111 through the No. 1 one-way valve 20112, and the end of the air outlet pipe 20113 away from the No. 1 one-way valve 20112 is bent downward.

[0032] Specifically, during the process of the piston in the sealed box 201 moving from the uppermost end to the lowermost end, the air inlet pipe 209 does not enter the sealed box 201 due to the action of the No. 2 one-way valve 2010, and the piston plate 202 will compress the air below, allowing the air to be discharged from the air supply pipe 20111 in the form of high-pressure airflow and blown out from the air outlet pipe 20113. Because part of the structure on the membrane switch will be deformed during the embossing process to produce a small amount of plastic particles, the airflow blown out of the air outlet pipe 20113 can clean the particles remaining on the surface of the membrane switch; in addition, during the process of the piston in the sealed box 201 moving from the lowermost end to the uppermost end, the air inlet pipe 209 enters the sealed box 201 under the action of the No. 2 one-way valve 2010, and the upward movement of the piston plate 202 is equivalent to filling the sealed box 201 with gas again, thereby preparing for the airflow replenishment for the cleaning of the next membrane switch.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An embossing machine for a membrane switch, comprising: A machine body (1), a workbench (101) and a lower die base (102), wherein the lower die base (102) is fixed at the top center position of the workbench (101), an upper die base (103) is provided directly above the lower die base (102), and the workbench (101) is fixed on the machine body (1); It is characterized by further comprising: Two groups of racks (104) are symmetrically fixed on both sides of the lower mold base (102); a conveying unit (4) for conveying the membrane switch is provided between the two groups of racks (104); a transfer unit (3) is installed on the side of the rack (104) away from the lower mold base (102); the output end of the transfer unit (3) is fixedly connected to two groups of material picking units (2); the two groups of material picking units (2) are distributed front and back and are respectively used to automatically pick up and place the membrane switch before and after processing; A propulsion unit (6) installed at one end of the platform (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) is fixed to a side of the machine body (1) away from the conveying unit (4), and a material receiving box (501) is provided on the support plate (5).

2. The embossing machine for a membrane switch according to claim 1, characterized in that: The material taking unit (2) comprises a sealing 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 sealing box (201) is fixedly connected to the transfer unit (3) via the connecting frame (204); the piston plate (202) is slidably and sealingly connected to the inside of the sealing box (201); two piston rods (203) are provided, and the two piston rods (203) are symmetrically fixed to the top of the piston plate (202); one end of the piston rod (203) away from the piston plate (202) slides through the top of the sealing box (201) and is fixedly connected to the output end of the swinging assembly (206); A plurality of push-pull rods (207) are arranged in an array at the bottom of the plug plate (202); one end of the push-pull rods (207) away from the piston plate (202) extends to the bottom of the sealing box (201) and is fixed with a U-shaped plate (208); the push-pull rods (207) and the sealing box (201) are slidably connected via a sealing ring; the clamping assembly (205) is installed at the bottom of the U-shaped plate (208); an air inlet pipe (209) is fixedly connected to one end of the sealing box (201); a No. 2 one-way valve (2010) is fixed to one end of the air inlet pipe (209) away from the sealing box (201); and a plurality of blowing assemblies (211) are evenly distributed on one side of the sealing box (201) close to the lower mold base (102).

3. The embossing machine for a membrane switch according to claim 2, characterized in that: The swing assembly (206) comprises 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) via a bearing; the bottom of the limit seat (2061) is slidably connected to a slide groove provided on the stand (104); the first gear (2063) is fixed to one end of the first rotating shaft (2062) away from the limit seat (2061); the swing rod (2064) is connected to the first connecting rod (2065), and the pulley (2066) is connected to the first connecting rod (2065). One end of the gear (2064) is fixed to the middle axis 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 on the end of the first connecting rod (2065) away from the swing rod (2064), a groove is provided 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), and the first rack (2068) and the second rack (2069) are fixed on the stand (104).

4. The embossing machine for a membrane switch according to claim 2, characterized in that: The clamping assembly (205) comprises 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) via a bearing seat; the threaded column (2052) is symmetrically provided in two groups; the two groups of threaded columns (2052) are respectively fixed at two ends of the second rotating shaft (2051); and the threads of the two groups of threaded columns (2052) are rotatably connected to the inner side of the U-shaped plate (208); On the contrary, each group of the threaded columns (2052) is connected to a clamping plate (2053) via a nut thread, 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 slide groove provided 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), and the second gear (2055) is fixedly sleeved to the connecting shaft (2054).

5. The embossing machine for a membrane switch according to claim 2, characterized in that: The blowing assembly (2011) comprises an air supply pipe (20111), a No. 1 one-way valve (20112) and an air outlet pipe (20113); the air supply pipe (20111) is fixedly plugged into one side of the sealing box (201); the air outlet pipe (20113) is fixedly connected to the air supply pipe (20111) via the No. 1 one-way valve (20112); and one end of the air outlet pipe (20113) away from the No. 1 one-way valve (20112) is arranged in a bent downward state.

6. The embossing machine for a membrane switch according to claim 2, characterized in that: The transfer unit (3) comprises 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 to the outside of the platform (104); the output end of the transfer motor (301) is fixedly connected to the ball screw (302) via a coupling; both ends of the ball screw (302) are mounted on the platform (104) via a bearing seat; the ball nut (303) is threadedly sleeved on the ball screw The second connecting rod (304) is fixed to the ball nut (303) on the outside of the screw rod (302), and one end of the second connecting rod (304) away from the ball nut (303) is fixedly connected to the connecting plate (305) via a bolt, one side of the slider (306) is fixedly connected to the connecting plate (305), the guide rail (307) is fixed to the outside of the frame (104), the slider (306) and the guide rail (307) are slidably connected, and the connecting plate (305) is fixedly connected to the connecting frame (204) via a fixing plate.

7. The embossing machine for a membrane switch according to claim 2, characterized in that: The transmission unit (4) comprises a transmission roller (401), a third rotating shaft (402), a transmission belt (403), a third gear (404) and a fourth gear (405). The transmission roller (401) is provided in plurality, and the plurality of transmission rollers (401) are evenly distributed on both sides of the length direction of the platform (104). The third rotating shaft (402) is fixed at both ends of the transmission roller (401). The third rotating shaft (402) is rotatably connected to the platform (104) via a bearing. The No. 4 gear (404) is fixed to one of the No. 3 rotating shafts (402), the No. 4 gear (405) is meshedly connected to the No. 3 gear (404), a No. 4 rotating shaft (406) is fixed in the middle hole of the No. 4 gear (405), one end of the No. 4 rotating shaft (406) is rotatably connected to the stand (104) through a bearing, the conveyor belt (403) is installed on the outside of the conveyor roller (401), and the propulsion unit (6) is arranged on one side of the No. 4 gear (405).

8. The embossing machine for a membrane switch according to claim 7, characterized in that: The propulsion unit (6) comprises a ratchet (601), a leaf spring (602), a stop pawl (603), a ratchet pawl (604), a push rod (605) and a limit rod (606); the ratchet (601) is fixed to one end of the fourth rotating shaft (406); one end of the stop pawl (603) is movably engaged with a tooth groove of the ratchet (601); the leaf spring (602) is elastically connected to one side of the stop pawl (603); one end of the leaf spring (602) is fixed with a fixing frame (608); the fixing frame (608) is fixedly connected to the stand (104); the stop pawl (603) is away from the ratchet One end of the wheel (601) is rotatably connected to the fixed frame (608), one end of the pawl (604) is movably engaged with the tooth groove of the ratchet wheel (601), one end of the pawl (604) away from the ratchet wheel (601) is fixedly connected to the push rod (605), one end of the push rod (605) away from the pawl (604) is rotatably connected to a movable plate (607), the movable plate (607) is fixedly connected to the connecting frame (204), the limiting rod (606) is fixedly connected to the movable plate (607) via a fixing block, and the push rod (605) is overlapped on the limiting rod (606).

9. The embossing machine for a membrane switch according to claim 1, characterized in that: A first tooth plate (7) and a second tooth plate (8) are fixed on the inner side of the stand (104); the teeth of the first tooth plate (7) are located on the upper side thereof, and the teeth of the second tooth plate (8) are located on the lower side thereof; the first tooth plate (7) and the second tooth plate (8) are staggered.

10. The embossing machine for a membrane switch according to claim 9, characterized in that: A third tooth plate (9) and a fourth tooth plate (10) are also fixed on the inner side of the frame (104); the teeth of the third tooth plate (9) are located on the upper side thereof, and the teeth of the fourth tooth plate (10) are located on the lower side thereof; the third tooth plate (9) and the fourth tooth plate (10) are staggered in distribution.

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