Metal diaphragm stamping device and process

Abstract

The present invention relates to the field of stamping process technology, and specifically to a metal diaphragm stamping device and process. The present invention provides a metal diaphragm stamping device, including a mold, wherein the mold includes a first mold assembly and a second mold assembly, and the first mold assembly and the second mold assembly are molded together by a fixed assembly. The present invention uses a stamping assembly to push the upper mold seat after fixing the diaphragm with a magnet under the joint action of the mold and the fixed assembly, so that the upper mold and the lower mold are quickly stamped, thereby stamping the metal diaphragm. When the upper mold seat moves downward, the upper mold and the lower mold are limited and fixed under the joint action of the J-shaped elastic plate, the vertical groove and the horizontal groove to prevent the punch from moving, and at the same time, the stamping force after stamping is maintained to avoid the plastic enhancement of the diaphragm due to preheating in advance. If the stamping force is removed immediately, it is easy to cause the diaphragm to deform after demolding, thereby affecting the stamping effect of the diaphragm.

Description

Technical Field

[0001] The invention relates to the technical field of stamping technology, and in particular to a metal diaphragm stamping device and process. Background Art

[0002] Metal diaphragms are core components widely used in key fields such as electronics, communications, aerospace, and medical devices. Their processing accuracy and efficiency are directly related to the performance and cost of the products. The metal diaphragm stamping process is one of the main methods of metal plastic processing and belongs to material forming engineering technology. It places the metal diaphragm blank on the lower die, uses hydraulic pressure to quickly press the upper die on the die, and punches the lower die, thereby punching the metal diaphragm into the required shape and size.

[0003] In the existing single-station stamping technology, stamping dies are used in pairs, and in order to improve the plasticity of the metal diaphragm and reduce the punching force during stamping, the diaphragm is usually preheated before stamping. Preheating ensures that the diaphragm reaches a relatively uniform temperature distribution before stamping, which is conducive to more uniform deformation during the stamping process. However, if the mold is demolded immediately after the stamping is completed, due to the elastic recovery characteristics of the metal material, the diaphragm will tend to return to its original shape, especially after preheating, the material has a higher recovery ability, so it is easy to cause the diaphragm to deform after demolding, resulting in poor molding effect of the diaphragm, which in turn affects the quality of the product. If the stamping is completed, the diaphragm is cooled before being removed from the lower template, which takes a long time and affects the work efficiency. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a metal diaphragm stamping device and process, which can effectively solve the problem in the prior art that after the stamping is completed, the temperature of the diaphragm surface is high and the stamped diaphragm may be deformed if the upper template is immediately removed.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a metal diaphragm punching device, comprising:

[0007] The mold comprises a first mold assembly and a second mold assembly, the first mold assembly and the second mold assembly are molded together by a fixed assembly, the first mold assembly comprises an upper mold base, the bottom of the upper mold base is fixedly connected to the upper mold, the bottom of the upper mold is fixedly connected to the convex mold, the second mold assembly comprises a lower mold, the top of the lower mold is provided with a concave mold, the top of the lower mold and magnets are embedded on both sides of the concave mold, the fixed assembly comprises two J-shaped elastic plates installed on the bottom of the upper mold and a vertical groove provided on the top of the lower mold and corresponding to the position of the J-shaped elastic plate, both side walls of the lower mold are provided with transverse grooves, the two transverse grooves are connected with the vertical grooves, and when the upper mold and the lower mold are in a mold-closing state, the J-shaped elastic plate is clamped in the vertical groove and the transverse groove;

[0008] A driving assembly, the driving assembly is used to convey a plurality of molds, and the molds are mounted on the driving assembly;

[0009] an ejection assembly, the ejection assembly being used to separate the first mold assembly from the second mold assembly;

[0010] A reset component, the reset component is used to reset the second mold component;

[0011] An air delivery component and an air guide component, wherein the air delivery component and the air guide component cooperate with each other to cool the mold and preheat the diaphragm;

[0012] A stamping assembly, wherein the stamping assembly is used to stamp the first die assembly;

[0013] A frame is used to provide installation positions for the punching assembly, the gas delivery assembly and the driving assembly.

[0014] Preferably, the drive assembly includes a first drive assembly and two second drive assemblies, the first drive assembly includes an installation box, the installation box is fixedly mounted on the side walls of one of the frames, two meshing gears are rotatably mounted inside the installation box, the gears are transmission-connected to the corresponding second drive assemblies, the two gears are meshed, a motor is fixedly mounted on the outer wall of the installation box, the output end of the motor passes through the side wall of the installation box and is fixedly connected to the side wall of one of the gears.

[0015] Preferably, the two second drive assemblies are arranged in parallel, and the second drive assemblies include two rotating shafts, which are rotatably installed in the frame, the rotating shaft passes through the side wall of the frame and is fixedly connected to the side wall of one of the gears, two sprockets are fixedly connected to the outer sides of both ends of the rotating shaft, and the two sprockets located on different rotating shafts and the same are meshed through a chain, and a plurality of U-shaped plates are fixedly connected between the two upper chains through chain teeth, and a plurality of push plates are provided on the outer walls of the chains, and the push plates are located on both sides of the corresponding U-shaped plates, and a plurality of fixed seats are fixedly connected between the two lower chains, and the fixed seats are located directly below the corresponding U-shaped plates, the upper mold seat is installed on the U-shaped plate through a reset assembly, and the lower mold is fixedly installed on the fixed seat.

[0016] Preferably, the reset assembly includes a tension spring fixedly installed at the bottom of the U-shaped plate, a fixed cylinder is installed inside the tension spring, the top of the fixed cylinder is fixedly connected to the bottom of the rotating shaft, a fixed column is slidably installed at the bottom of the fixed cylinder, the bottom of the fixed column is fixedly connected to a connecting plate, the top of the connecting plate is fixedly connected to the bottom of the tension spring, the bottom of the connecting plate is fixedly connected to the top of the upper mold base, and the bottom of the rotating shaft is fixedly connected to two magnet columns.

[0017] Preferably, the gas delivery assembly includes a mounting plate, which is fixedly mounted on the top of the frame, a vortex tube is mounted on the top of the mounting plate via a fixing ring, an air inlet end of the vortex tube is connected to an air inlet pipe, two air outlet ends of the mounting plate are fixedly connected to air delivery pipes, the other ends of the air delivery pipes respectively penetrate the top of the frame and the side wall of the frame and are connected to the air guide pipe through a ball valve, a plurality of air outlet pipes are connected to the side of the air guide pipe away from the ball valve, a valve stem is provided on the top of the ball valve, and a torsion spring is provided between the valve stem and the ball valve.

[0018] Preferably, the air guide component includes a plurality of first air inlet holes opened on both sides of the upper mold, a plurality of first air outlet holes opened on the bottom of the upper mold, and the plurality of first air outlet holes are connected with the corresponding first air inlet holes, a plurality of second air inlet holes are opened on both sides of the lower mold, and the plurality of second air inlet holes are connected with the concave mold, a second air outlet hole is opened on the side wall of the J-shaped elastic plate, and the second air outlet hole is connected with one of the second air inlet holes, the flow paths of the plurality of second air inlet holes are shortened from left to right in sequence, and the flow paths of the plurality of first air inlet holes are shortened from left to right in sequence.

[0019] Preferably, the pop-up assembly includes two fixed boxes, which are respectively fixedly mounted on the inner walls of both sides of the frame, a spring is fixedly connected inside the fixed box, the other end of the spring is fixedly connected to an extrusion plate, and the extrusion plate is slidably connected to the fixed box.

[0020] Preferably, the stamping assembly includes a limit plate fixedly installed in the frame, the limit plate is located in the chain above, a hydraulic cylinder is fixedly installed on the top of the limit plate, the output end of the hydraulic cylinder passes through the top of the limit plate and is fixedly connected to a push block, and a reinforcement plate is fixedly installed inside the frame, and the reinforcement plate is located in the chain below.

[0021] Preferably, a collection box is provided inside one side of the frame.

[0022] A stamping process of a metal diaphragm stamping device specifically includes the following steps:

[0023] S1. First, connect the air delivery component to the air compressor, then place the metal diaphragm on the lower mold through the robot, and limit the metal diaphragm through the magnet;

[0024] S2, then use the cooperation between the gas transmission component and the gas guide component to preheat the metal diaphragm with hot air flow, and then start the driving component to drive the upper die base and the lower die to move. When the upper die base and the lower die move to the bottom of the stamping component, the upper die base is stamped downward by the stamping component, and the J-shaped elastic plate extends into the vertical groove, and the tip of the J-shaped elastic plate is deformed. When the J-shaped elastic plate encounters the horizontal groove, the tip of the J-shaped elastic plate returns to its original state and extends into the horizontal groove, so that the upper die and the lower die are limited and fixed, and the reset component changes at the same time;

[0025] S3. Under the continuous operation of the driving component, the upper die base and the lower die are driven to move continuously. Under the cooperation of the air delivery component and the air guide component, the cold air flow is used to cool the stamped diaphragm. Then, the ejection component extends into the horizontal groove, squeezes the tip of the J-shaped elastic plate, and extends into the vertical groove. At the same time, under the action of the reset component, the upper die base is driven to reset.

[0026] S4. Under the continuous operation of the driving component, the lower mold is driven to move continuously until the lower mold moves to the bottom of the driving component. Then, the formed diaphragm in the lower mold falls and is collected under the action of gravity. The used lower mold and upper mold continue to move under the action of the driving component, waiting for the subsequent unprocessed diaphragm to be punched.

[0027] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0028] 1. Through the joint action of the mold and the fixing component, after the diaphragm is fixed by the magnet, the upper mold seat is pushed by the stamping component, so that the upper mold and the lower mold are quickly stamped, so that the punch is extended into the concave mold, so as to stamp the metal diaphragm. When the upper mold seat moves down, the J-shaped elastic plate extends into the interior of the vertical groove. At this time, the tip of the J-shaped elastic plate shrinks. When encountering the transverse groove, the tip of the J-shaped elastic plate returns to its original state and extends into the interior of the transverse groove, so that the J-shaped elastic plate is fixed inside the transverse groove and the vertical groove, that is, the upper mold and the lower mold are limited and fixed to prevent the punch from moving. At the same time, the stamping pressure after stamping is maintained to avoid the plastic enhancement of the diaphragm due to preheating in advance. If the stamping pressure is removed immediately, it is easy to cause the diaphragm to deform after demolding, thereby affecting the stamping effect of the diaphragm;

[0029] 2. Through the arrangement of the gas transmission component, the push plate and the gas guide component, the push plate is used to push the valve stem to rotate, so that the ball valve is opened, and the hot air flow or the cold air flow is ejected from the outlet pipe; when preheating, the hot air flow passes through the second air inlet channel. Since the flow path of the second air inlet channel is shortened from left to right, the hot air flow can enter the die at the same time to preheat the bottom of the diaphragm; when cooling, the bottom of the stamped diaphragm is cooled by the cooperation of the second air inlet channel and the second air outlet, and the top of the stamped diaphragm is cooled by the cooperation of the first air inlet channel and the first air outlet; preheating the diaphragm causes the temperature of the metal diaphragm to rise, thereby reducing its yield strength and tensile strength, improving the plasticity of the material, and making it easier for the stamping component to stamp the diaphragm; cooling the stamped diaphragm reduces the cooling time and improves work efficiency;

[0030] 3. Through the joint action of the pop-up component and the reset component, the tip of the J-shaped elastic plate is squeezed back into the vertical groove by the extrusion plate, and then the upper die seat is reset under the action of the tension spring, which makes it convenient to stamp the next diaphragm, and the setting of the magnet column further increases the stability of the upper die seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0033] Figure 2 A schematic diagram of a three-dimensional structure from another viewing angle of the present invention;

[0034] Figure 3It is a schematic diagram of a partial three-dimensional structure of the frame of the present invention;

[0035] Figure 4 is a schematic diagram of the three-dimensional structure of the second driving assembly of the present invention;

[0036] Figure 5 It is a schematic diagram of the three-dimensional structure of the gas transmission component of the present invention;

[0037] Figure 6 It is a schematic diagram of the three-dimensional structure of the mold of the present invention;

[0038] Figure 7 It is a three-dimensional structural schematic diagram of the first mold assembly and the reset assembly of the present invention;

[0039] Figure 8 It is a schematic diagram of the three-dimensional structure of the second mold assembly and the fixing assembly of the present invention;

[0040] Fig. 9 It is a schematic cross-sectional structure diagram of the lower mold of the present invention;

[0041] Fig.10 It is a schematic cross-sectional structural diagram of the upper mold of the present invention;

[0042] Fig.11 It is a schematic diagram of the split three-dimensional structure of the pop-up component of the present invention;

[0043] Fig.12 It is a schematic diagram of the three-dimensional structure of the first driving component of the present invention.

[0044] Figure numerals: 1, frame; 2, stamping assembly; 21, hydraulic cylinder; 22, limit plate; 23, reinforcement plate; 3, air delivery assembly; 31, mounting plate; 32, vortex tube; 33, air inlet pipe; 34, air delivery pipe; 35, air guide pipe; 36, ball valve; 37, air outlet pipe; 38, valve stem; 4, drive assembly; 41, first drive assembly; 411, gear; 412, mounting box; 413, motor; 42, second drive assembly; 421, rotating shaft; 422, sprocket; 423, chain; 424, Chinese-shaped plate; 425, fixed seat; 426, push plate; 5, mold; 51, first mold Assembly; 511, upper mold base; 512, upper mold; 513, punch; 52, second mold assembly; 521, lower mold; 522, die; 523, magnet; 6, reset assembly; 61, fixed cylinder; 62, tension spring; 63, fixed column; 64, connecting plate; 65, magnet column; 7, fixed assembly; 71, J-shaped elastic plate; 72, vertical groove; 73, horizontal groove; 8, pop-up assembly; 81, fixed box; 82, spring; 83, extrusion plate; 9, air guide assembly; 91, first air inlet channel; 92, first air outlet; 93, second air inlet channel; 94, second air outlet; 10, collection box. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0046] The present invention will be further described below in conjunction with the embodiments.

[0047] Example: Refer to Figures 1 to 12 , the metal diaphragm stamping device includes:

[0048] The mold 5 includes a first mold assembly 51 and a second mold assembly 52. ​​The first mold assembly 51 and the second mold assembly 52 are installed by a fixing assembly 7. The first mold assembly 51 includes an upper mold base 511. The bottom of the upper mold base 511 is fixedly connected to an upper mold 512. The bottom of the upper mold 512 is fixedly connected to a convex mold 513. The second mold assembly 52 includes a lower mold 521. The top of the lower mold 521 is provided with a concave mold 522. Magnets 523 are embedded at the top of the lower mold 521 and on both sides of the concave mold 522. The fixing assembly 7 includes two J-shaped elastic plates 71 installed at the bottom of the upper mold 512 and a J-shaped elastic plate 71 opened at the bottom of the lower mold 512. A vertical groove 72 is formed at the top of the tool 521 and corresponds to the position of the J-shaped elastic plate 71. Both side walls of the lower mold 521 are provided with transverse grooves 73. The two transverse grooves 73 are connected to the vertical grooves 72. When the upper mold 512 and the lower mold 521 are in a mold closing state, the J-shaped elastic plate 71 is clamped in the vertical groove 72 and the transverse groove 73. When the upper mold base 511 is stamped using the stamping assembly 2, the first mold assembly 51 and the second mold assembly 52 are limited and fixed with the cooperation of the J-shaped elastic plate 71, the vertical groove 72 and the transverse groove 73. At the same time, the metal diaphragm is stamped with the cooperation of the punch 513 and the die 522.

[0049] A driving assembly 4, the driving assembly 4 is used to transport a plurality of molds 5 and provide an installation position for the molds 5;

[0050] An ejection assembly 8, the ejection assembly 8 is used to separate the first mold assembly 51 from the second mold assembly 52;

[0051] A reset assembly 6, the reset assembly 6 is used to reset the second mold assembly 52;

[0052] The gas delivery component 3 and the gas guide component 9 cooperate with each other to cool the mold 5 and preheat the diaphragm;

[0053] A stamping assembly 2, the stamping assembly 2 is used to stamp the first die assembly 51;

[0054] The frame 1 is used to provide an installation position for the punching assembly 2, the gas delivery assembly 3 and the driving assembly 4.

[0055] Specifically, refer to Figure 4 and Fig.12 The driving assembly 4 includes a first driving assembly 41 and two second driving assemblies 42. The first driving assembly 41 includes an installation box 412, which is fixedly installed on the side wall of one of the frames 1. Two meshing gears 411 are rotatably installed inside the installation box 412. The gears 411 are transmission-connected to the corresponding second driving assembly 42. A motor 413 is fixedly installed on the outer wall of the installation box 412. The output end of the motor 413 passes through the side wall of the installation box 412 and is fixedly connected to the side wall of one of the gears 411. The two second driving assemblies 42 are arranged in parallel. The second driving assembly 42 includes two rotating shafts 421, which are rotatably installed in the frame 1. The rotating shaft 421 passes through the side wall of the frame 1 and is fixedly connected to the side wall of one of the gears 411. Two sprockets 422 are fixedly connected to the outer sides of the two ends of the rotating shaft 421, which are located on different rotating shafts 421 and The two sprockets 422 located on the same side are meshed with each other through a chain 423, and a plurality of U-shaped plates 424 are fixedly connected between the two upper chains 423 through chain teeth, and a plurality of push plates 426 are provided on the outer wall of the chain 423, and the plurality of push plates 426 are located on both sides of the corresponding U-shaped plates 424, and a plurality of fixing seats 425 are fixedly connected between the two lower chains 423, and the plurality of fixing seats 425 are located directly below the corresponding U-shaped plates 424, the upper mold seat 511 is installed on the U-shaped plate 424 through a reset assembly 6, and the lower mold 521 is fixedly installed on the fixing seat 425, and the motor 413 is started, and the motor 413 drives the two gears 411 to mesh and transmit, and under the action of the two rotating shafts 421 on the same vertical plane, the sprocket 422 and the chain 423 cooperate with each other to drive the U-shaped plate 424 and the fixing seat 425 to move respectively.

[0056] Further, refer to Figure 6 to Figure 7 The reset assembly 6 includes a tension spring 62 fixedly installed at the bottom of the U-shaped plate 424, a fixed cylinder 61 is installed inside the tension spring 62, the top of the fixed cylinder 61 is fixedly connected to the bottom of the rotating shaft 421, a fixed column 63 is slidably installed at the bottom of the fixed cylinder 61, and a connecting plate 64 is fixedly connected to the bottom of the fixed column 63, the top of the connecting plate 64 is fixedly connected to the bottom of the tension spring 62, the bottom of the connecting plate 64 is fixedly connected to the top of the upper mold base 511, and two magnet columns 65 are fixedly connected to the bottom of the rotating shaft 421. When the upper mold base 511 falls, the connecting plate 64 is driven to move downward, and the fixed column 63 is moved out from the inside of the fixed cylinder 61, and the tension spring 62 is deformed at the same time, which is convenient for resetting the upper mold base 511 later.

[0057] Further, refer to Figure 1 and Figure 5 The air delivery assembly 3 includes a mounting plate 31, which is fixedly mounted on the top of the frame 1. A vortex tube 32 is mounted on the top of the mounting plate 31 through a fixing ring. The vortex tube 32 uses compressed air as a power source. When high-pressure compressed air enters the vortex tube, the airflow rotates at a high speed in the vortex tube 32 to form a vortex. Due to the centrifugal effect of the vortex, the airflow is divided into two parts: a cold airflow and a hot airflow. The air inlet end of the vortex tube 32 is connected to an air inlet pipe 33. The other end of the air inlet pipe 33 An air compressor (not shown) is connected, and the air compressor serves as the source of compressed air for the vortex tube. The two air outlet ends of the mounting plate 31 are fixedly connected with an air supply pipe 34. The other end of the air supply pipe 34 respectively penetrates the top of the frame 1 and the side wall of the frame 1 and is connected to the air guide pipe 35 through a ball valve 36. The side of the air guide pipe 35 away from the ball valve 36 is connected with multiple air outlet pipes 37. A valve stem 38 is provided at the top of the ball valve 36, and a torsion spring is provided between the valve stem 38 and the ball valve 36.

[0058] Further, refer to Figures 6 to 10The air guide component 9 includes a plurality of first air inlet channels 91 opened on both sides of the upper mold 512, a plurality of first air outlet holes 92 opened at the bottom of the upper mold 512, and the plurality of first air outlet holes 92 are connected to the corresponding first air inlet channels 91, a plurality of second air inlet channels 93 opened on both sides of the lower mold 521, and the plurality of second air inlet channels 93 are connected to the concave mold 522, a second air outlet hole 94 opened on the side wall of the J-shaped elastic plate 71, and the second air outlet hole 94 is connected to one of the second air inlet channels 93, and the flow paths of the plurality of second air inlet channels 93 from left to right are shortened successively, and the plurality of first air inlet channels 9 The flow path from left to right is shortened successively, pushing the output valve stem 38 to rotate, so that the ball valve 36 is opened, and then the air flow is ejected through the outlet pipe 37. When the stamped diaphragm is cooled, the air flow enters the upper die seat 511 through the first air inlet channel 91, and enters the upper die 512 through the second air inlet channel 93 and the second air outlet 94. Because the flow paths of the first air inlet channel 91 and the second air inlet channel 93 from left to right are shortened successively, the air flow of the first air inlet channel 91 is ejected above the stamped diaphragm through the first air outlet 92, and the air flow of the second air inlet channel 93 is ejected at the top and bottom of the stamped diaphragm at the same time. The bottom of the stamped diaphragm is cooled quickly within a limited moving distance in the mold closing state to avoid the plasticity of the metal diaphragm being increased by the temperature caused by the preheating temperature and the rapid stamping. When demolding, the diaphragm tends to return to its original shape, thereby causing the stamped diaphragm to deform. When the diaphragm is preheated, the air flow enters the upper mold 512 through the first air inlet channel 91, and then flows into the concave mold 522 at the same time to preheat the bottom of the metal diaphragm. The top of the metal diaphragm is preheated by the air outlet pipe 37 above the air guide pipe 35. The ball valve 36 is a common fluid control valve. The spherical valve core can be driven by the valve stem 38 and rotate around the axis of the ball valve 36 to control the flow of the fluid. Under normal circumstances, the ball valve 36 is in a closed state and the torsion spring is in an untwisted state. During the period from when the push plate 426 contacts the valve stem 38 to when it is separated from the valve stem 38, the spherical valve core deflects, and the ball valve 36 is in an open state. The torsion spring is driven by the valve stem 38 to gradually twist and store energy. When the push plate 426 is away from the valve stem 38, the valve stem 38 rotates under the action of the torsion spring releasing energy and driving the spherical valve core to rotate to the initial position to automatically close the ball valve 36 and avoid waste of hot air flow or cold air flow.

[0059] Further, refer to Figure 3 and Fig.11, and the pop-up component 8 is located on the side of the air delivery component 3 away from the motor 413. The pop-up component 8 includes two fixed boxes 81, and the two fixed boxes 81 are respectively fixedly installed on the inner walls of the two sides of the frame 1. The interior of the fixed box 81 is fixedly connected with a spring 82, and the other end of the spring 82 is fixedly connected with an extrusion plate 83, and the extrusion plate 83 is slidably connected to the fixed box 81. The moving lower mold 521 has a certain extrusion force on the extrusion plate 83, and the extrusion plate 83 has a certain extrusion force on the spring 82. Part of the extrusion plate 83 is stored in the fixed box 81, which is convenient for having a certain extrusion force on the tip of the J-shaped elastic plate 71.

[0060] Further, refer to Figure 3 to Figure 4 The stamping assembly 2 includes a limit plate 22 fixedly installed in the frame 1, the limit plate 22 is located in the chain 423 above, a hydraulic cylinder 21 is fixedly installed on the top of the limit plate 22, the output end of the hydraulic cylinder 21 passes through the top of the limit plate 22 and is fixedly connected to a push block, and a reinforcement plate 23 is fixedly installed inside the frame 1, the reinforcement plate 23 is located in the chain 423 below, and the first mold assembly 51 is stamped downward by the cooperation between the hydraulic cylinder 21 and the push block, and the diaphragm on the second mold assembly 52 is stamped.

[0061] The working principle of this device is as follows:

[0062] First, the air inlet pipe 33 in the air delivery component 3 is connected to an air compressor, and compressed air is provided to the vortex tube 32 through the air compressor. The two output ends of the vortex tube 32 form hot air flow and cold air flow respectively. Then, the metal diaphragm is placed on the lower mold 521 by a manipulator, and the ferromagnetic metal diaphragm is limited by the magnet 523.

[0063] The motor 413 is started, and the motor 413 drives the two gears 411 to mesh and transmit, and under the action of the two rotating shafts 421 on the same vertical plane, and under the cooperation of the corresponding sprockets 422 and chains 423, the U-shaped plate 424 and the fixed seat 425 are driven to move respectively, thereby driving the upper mold 512 and the lower mold 521 to move at the same time, and at the same time, the push plate 426 at the top moves, and the push plate 426 contacts the valve stem 38 when moving. The continuous movement of the push plate 426 can drive the valve stem 38 on the output hot air flow to rotate, so that the valve stem 38 drives the spherical valve core in the ball valve 36 to rotate together, so that the ball valve 36 is opened. Open, and then the hot air flow is ejected through the outlet pipe 37. Since the flow path of the second air inlet channel 93 from left to right is shortened successively, the hot air flows in the multiple second air inlet channels 93 can be simultaneously ejected to the bottom of the metal diaphragm for preheating, and the outlet pipe 37 above the air guide pipe 35 preheats the top of the metal diaphragm. The preheating ensures that the diaphragm reaches a relatively uniform temperature distribution before stamping, which is conducive to achieving more uniform deformation during the stamping process. Then the drive assembly 4 continues to move. When the push plate 426 is away from the valve stem 38, the ball valve 36 is reset under the action of the torsion spring, and then the ball valve 36 is automatically closed to avoid waste of hot air flow.

[0064] Under the continuous action of the driving assembly 4, the first mold assembly 51 and the second mold assembly 52 are continuously moved. Since the driving assembly 4 is an intermittent stepping transmission, that is, it transmits the distance of three push plates 426 each time, when the first mold assembly 51 and the second mold assembly 52 move to the bottom of the hydraulic cylinder 21, they stop. The output end of the hydraulic cylinder 21 moves with the push block, passes through the center of the U-shaped plate 424, and pushes the upper mold base 511 downward. The punch 513 and the die 522 work together to stamp the preheated metal diaphragm. At the same time, the J-shaped elastic plate 71 extends into the vertical groove 72, and the tip of the J-shaped elastic plate 71 is deformed. When the J-shaped elastic plate 71 encounters the horizontal groove 73, the tip of the J-shaped elastic plate 71 returns to its original shape and extends into the horizontal groove 73, limiting and fixing the upper die seat 511 and the lower die 521, so as to prevent the first die assembly 51 from being reset immediately after the stamping is completed. Due to the elastic recovery characteristics of the metal diaphragm, the diaphragm tends to return to its original shape, so that the stamped diaphragm may be deformed and the quality may be reduced.

[0065] When the upper mold base 511 falls, the connecting plate 64 is driven to move downward, and the fixing column 63 is moved out from the inside of the fixing cylinder 61. At the same time, the tension spring 62 is deformed. Under the continuous operation of the driving assembly 4, the combined second mold assembly 52 and the first mold assembly 51 are driven to move. When the push plate 426 moves, the valve stem 38 on the output cold air flow is pushed to rotate, so that the ball valve 36 is opened, and then the cold air flow is ejected through the outlet pipe 37. The cold air flow enters the upper mold 512 through the first air inlet channel 91, and enters the upper mold base 511 through the second air inlet channel 93 and the second air outlet hole 94. Because the first air inlet channel 91 and the second air inlet channel The flow path of the channel 93 from left to right is shortened successively, so that the cold airflow in the plurality of first air inlet channels 91 and the second air inlet channels 93 can be simultaneously sprayed on the top and bottom of the punched diaphragm, so that the punched diaphragm can be quickly cooled within a limited moving distance in the mold closing state, so as to avoid the plasticity of the metal diaphragm being increased by the temperature caused by the preheating temperature and the rapid punching. When demolding, the diaphragm tends to return to its original shape, thereby causing the punched diaphragm to deform. When the push plate 426 is away from the valve stem 38, the ball valve 36 is reset under the action of the torsion spring, and then the ball valve 36 is automatically closed to avoid waste of cold airflow;

[0066] Under the continuous operation of the driving assembly 4, when the lower mold 521 encounters the extrusion plate 83, since the side of the extrusion plate 83 close to the lower mold 521 is an arc-shaped surface, the lower mold 521 has a certain extrusion force on the extrusion plate 83, and the extrusion plate 83 has a certain extrusion force on the spring 82, so that part of the extrusion plate 83 is received in the fixed box 81. When the extrusion plate 83 encounters the transverse groove 73, under the reaction force of the vertical groove 72, there is an extrusion force on the tip of the J-shaped elastic plate 71, and the tip of the J-shaped elastic plate 71 is received in the vertical groove 72. With the action of the tension spring 62, the second mold assembly 52 is separated from the first mold assembly 51, and the magnet column 65 has a certain magnetic attraction on the upper mold base 511, thereby enhancing the stability of the first mold assembly 51.

[0067] Since the side of the extrusion plate 83 close to the lower mold 521 is an arc-shaped surface, and the driving assembly 4 continuously drives the lower mold 521 to move, the extrusion plate 83 moves out of the transverse groove 73, and exerts an extrusion force on the spring 82, and part of the extrusion plate 83 is received inside the fixed box 81. After the lower mold 521 leaves, under the reaction of the spring 82, the extrusion plate 83 returns to the initial state, which is convenient for acting on the next lower mold 521;

[0068] Under the continuous operation of the driving component 4, the lower mold 521 is driven to move continuously until the lower mold 521 moves to the bottom of the chain 423. The formed diaphragm in the lower mold 521 falls into the inside of the collection box 10 under the action of gravity. The formed diaphragm is collected, and the upper mold 512 and the lower mold 521 of the same group can continue to punch the next diaphragm.

[0069] In general, Figure 4 For illustration, a stamping space is formed between the two chains 423, and the two chains 423 in this stamping space always run in parallel to complete the stages of feeding, preheating, stamping, cooling, and discharging of a single diaphragm. Figure 4 Taking the three diaphragms in the middle stamping space as an example, the diaphragm near the conveying head end is in the preheating stage, the diaphragm in the middle position is in the stamping stage, and the diaphragm near the conveying end is in the cooling stage. The hot air flow in the preheating stage and the cold air flow in the stamping stage come from the hot end and the cold end of the vortex tube, and the energy sources of preheating and stamping do not affect each other. The diaphragm is in an un-molded state in the preheating stage, and completes stamping and cooling in the mold-closed state. After cooling, the mold is opened to take out the film. The first mold assembly 51 and the second mold assembly 52 are circulated and used in combination in the stamping space.

[0070] A stamping process of a metal diaphragm stamping device specifically comprises the following steps:

[0071] S1, first connect the air delivery component 3 to an external air compressor, then place the metal diaphragm on the lower mold 521 by a manipulator, and limit the ferromagnetic metal diaphragm by a magnet 523;

[0072] S2, then use the mutual cooperation of the gas delivery component 3 and the gas guide component 9 to preheat the metal diaphragm with hot air flow, and then start the driving component 4 to drive the upper die base 511 and the lower die 521 to move. When the upper die base 511 and the lower die 521 move to the bottom of the stamping component 2, the upper die base 511 is stamped downward by the stamping component 2, and the J-shaped elastic plate 71 extends into the vertical groove 72, and the tip part of the J-shaped elastic plate 71 is deformed. When the J-shaped elastic plate 71 encounters the transverse groove 73, the tip part of the J-shaped elastic plate 71 returns to its original state and extends into the transverse groove 73, so that the upper die 512 and the lower die 521 are limited and fixed, and the reset component 6 changes at the same time;

[0073] S3, under the continuous operation of the driving component 4, the upper die holder 511 and the lower die 521 are driven to move continuously, and the cold air flow is used to cool the stamped diaphragm with the cooperation of the gas delivery component 3 and the gas guide component 9, and then the ejection component 8 extends into the horizontal groove 73, squeezes the tip of the J-shaped elastic plate 71, and extends into the vertical groove 72, and at the same time, under the action of the reset component 6, the upper die holder 511 is driven to reset;

[0074] S4. Under the continuous operation of the driving component 4, the lower mold 521 is driven to move continuously until the lower mold 521 moves to the bottom of the driving component 4. Then, the formed diaphragm in the lower mold 521 falls and is collected under the action of gravity. The used lower mold 521 and the upper mold 512 continue to move under the action of the driving component 4, waiting to punch the subsequent unprocessed diaphragms.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metal diaphragm punching device, characterized in that: include: A mold (5), the mold (5) comprising a first mold assembly (51) and a second mold assembly (52), the first mold assembly (51) and the second mold assembly (52) being molded together via a fixing assembly (7), the first mold assembly (51) comprising an upper mold base (511), the bottom of the upper mold base (511) being fixedly connected to an upper mold (512), the bottom of the upper mold (512) being fixedly connected to a male mold (513), the second mold assembly (52) comprising a lower mold (521), the top of the lower mold (521) being provided with a female mold (522), the lower mold (52 1) and magnets (523) are embedded on both sides of the concave mold (522), the fixing assembly (7) comprises two J-shaped elastic plates (71) mounted on the bottom of the upper mold (512) and vertical grooves (72) opened on the top of the lower mold (521) and corresponding to the positions of the J-shaped elastic plates (71), and the two side walls of the lower mold (521) are both provided with transverse grooves (73), the two transverse grooves (73) are connected to the vertical grooves (72), and when the upper mold (512) and the lower mold (521) are in a mold-closing state, the J-shaped elastic plates (71) are clamped in the vertical grooves (72) and the transverse grooves (73); A drive assembly (4), the drive assembly (4) being used to convey a plurality of moulds (5), the moulds (5) being mounted on the drive assembly (4); An ejection assembly (8), the ejection assembly (8) being used to separate the first mold assembly (51) from the second mold assembly (52); A reset component (6), wherein the reset component (6) is used to reset the second mold component (52); An air delivery component (3) and an air guide component (9), wherein the air delivery component (3) and the air guide component (9) cooperate with each other to cool the mold (5) and preheat the diaphragm; A stamping assembly (2), the stamping assembly (2) being used to stamp the first die assembly (51); A frame (1), the frame (1) being used to provide a mounting position for a punching assembly (2), a gas delivery assembly (3) and a driving assembly (4); The driving assembly (4) comprises a first driving assembly (41) and two second driving assemblies (42); the first driving assembly (41) comprises a mounting box (412); the mounting box (412) is fixedly mounted on a side wall of one of the racks (1); two meshing gears (411) are rotatably mounted inside the mounting box (412); the gears (411) are drivingly connected to the corresponding second driving assemblies (42); a motor (413) is fixedly mounted on an outer wall of the mounting box (412); an output end of the motor (413) passes through a side wall of the mounting box (412) and is fixedly connected to a side wall of one of the gears (411); The two second drive assemblies (42) are arranged in parallel, and the second drive assemblies (42) include two rotating shafts (421), the rotating shafts (421) are rotatably mounted in the frame (1), the rotating shafts (421) penetrate the side wall of the frame (1) and are fixedly connected to the side wall of one of the gears (411), and two sprocket wheels (422) are fixedly connected to the outer sides of both ends of the rotating shaft (421), and the two sprocket wheels (422) located on different rotating shafts (421) and on the same side are meshed with each other through a chain (423), and are located between the two upper chains (423). A plurality of U-shaped plates (424) are fixedly connected via chain teeth, and a plurality of push plates (426) are provided on the outer wall of the chain (423), and the plurality of push plates (426) are located on both sides of the corresponding U-shaped plates (424), a plurality of fixing seats (425) are fixedly connected between the two lower chains (423), and the plurality of fixing seats (425) are located directly below the corresponding U-shaped plates (424), the upper die seat (511) is mounted on the U-shaped plates (424) via a reset assembly (6), and the lower die (521) is fixedly mounted on the fixing seats (425); The reset assembly (6) comprises a tension spring (62) fixedly mounted on the bottom of the U-shaped plate (424); a fixed cylinder (61) is mounted inside the tension spring (62); the top of the fixed cylinder (61) is fixedly connected to the bottom of the rotating shaft (421); a fixed column (63) is slidably mounted on the bottom of the fixed cylinder (61); a connecting plate (64) is fixedly connected to the bottom of the fixed column (63); the top of the connecting plate (64) is fixedly connected to the bottom of the tension spring (62); the bottom of the connecting plate (64) is fixedly connected to the top of the upper die seat (511); and two magnet columns (65) are fixedly connected to the bottom of the rotating shaft (421); The gas delivery assembly (3) comprises a mounting plate (31), the mounting plate (31) being fixedly mounted on the top of the frame (1), a vortex tube (32) being mounted on the top of the mounting plate (31) via a fixing ring, an air inlet end of the vortex tube (32) being connected to an air inlet pipe (33), two air outlet ends of the mounting plate (31) being fixedly connected to air delivery pipes (34), the other ends of the air delivery pipes (34) respectively passing through the top of the frame (1) and the side wall of the frame (1) and being connected to an air guide pipe (35) via a ball valve (36), a side of the air guide pipe (35) away from the ball valve (36) being connected to a plurality of air outlet pipes (37), a valve stem (38) being arranged on the top of the ball valve (36), and a torsion spring being arranged between the valve stem (38) and the ball valve (36); The air guide component (9) comprises a plurality of first air inlet channels (91) provided on both sides of the upper mold (512); a plurality of first air outlet holes (92) are provided at the bottom of the upper mold (512); the plurality of first air outlet holes (92) are connected to the corresponding first air inlet channels (91); a plurality of second air inlet channels (93) are provided on both sides of the lower mold (521); the plurality of second air inlet channels (93) are connected to the concave mold (522); a second air outlet hole (94) is provided on the side wall of the J-shaped elastic plate (71); the second air outlet hole (94) is connected to one of the second air inlet channels (93); the flow paths of the plurality of second air inlet channels (93) are shortened from left to right in sequence; and the flow paths of the plurality of first air inlet channels (91) are shortened from left to right in sequence.

2. The metal diaphragm punching device according to claim 1, characterized in that: The ejection assembly (8) comprises two fixed boxes (81), the two fixed boxes (81) being fixedly mounted on the inner walls of both sides of the frame (1), respectively; a spring (82) is fixedly connected inside the fixed box (81), the other end of the spring (82) is fixedly connected to a pressing plate (83), and the pressing plate (83) is slidably connected to the fixed box (81).

3. The metal diaphragm punching device according to claim 2, characterized in that: The punching assembly (2) comprises a limit plate (22) fixedly mounted in the frame (1), the limit plate (22) being located in the chain (423) located above, a hydraulic cylinder (21) being fixedly mounted on the top of the limit plate (22), an output end of the hydraulic cylinder (21) passing through the top of the limit plate (22) and being fixedly connected to a push block, and a reinforcing plate (23) being fixedly mounted inside the frame (1), the reinforcing plate (23) being located in the chain (423) located below.

4. The metal diaphragm punching device according to claim 3, characterized in that: A collection box (10) is provided inside one side of the frame (1).

5. A stamping process of the metal diaphragm stamping device according to claim 4, characterized in that: The following steps are involved: S1, first connect the air delivery component (3) to an external air compressor, then place the metal diaphragm on the lower mold (521) by a robot, and limit the metal diaphragm by a magnet (523); S2, then using the cooperation between the gas delivery component (3) and the gas guide component (9), using the hot air flow to preheat the metal diaphragm, and then starting the driving component (4) to drive the upper die base (511) and the lower die (521) to move. When the upper die base (511) and the lower die (521) move to the bottom of the punching component (2), the upper die base (511) is punched downward by the punching component (2), and the J-shaped elastic plate (71) extends into the vertical groove (72). Then, the tip of the J-shaped elastic plate (71) is deformed. When the J-shaped elastic plate (71) encounters the horizontal groove (73), the tip of the J-shaped elastic plate (71) returns to its original state and extends into the horizontal groove (73), so that the upper die (512) and the lower die (521) are limited and fixed, and at the same time, the reset component (6) changes; S3, under the continuous operation of the driving component (4), the upper die seat (511) and the lower die (521) are driven to move continuously, and under the cooperation of the air delivery component (3) and the air guide component (9), the cold air flow is used to cool the stamped diaphragm, and then the ejection component (8) extends into the horizontal groove (73), squeezes the tip of the J-shaped elastic plate (71), and extends into the vertical groove (72), and at the same time, under the action of the reset component (6), the upper die seat (511) is driven to reset; S4. Under the continuous operation of the driving component (4), the lower mold (521) is driven to move continuously until the lower mold (521) moves to the bottom of the driving component (4). Then, the formed membrane in the lower mold (521) falls down and is collected under the action of gravity. The used lower mold (521) and the upper mold (512) continue to move under the action of the driving component (4) to wait for the subsequent unprocessed membrane to be punched.

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