A stamping die for electronic product housing and a processing method thereof

Abstract

The present invention belongs to the technical field of stamping die equipment, and discloses a stamping processing die for an electronic product shell and a processing method thereof, comprising a stamping machine body, wherein two die frames symmetrically distributed up and down are arranged on the stamping machine body, and die clamping mechanisms are connected inside the die frames, and the die clamping mechanisms include four equally circumferentially distributed limit clamping plates slidably connected to the die frames, the limit clamping plates are fixedly connected to sliding rods that penetrate the die frames, the sliding rods are coaxially slidably connected to piston sleeves fixedly connected to the die frames, the sliding rods and the piston sleeves are connected by springs, the four piston sleeves are connected to a pressure supply device fixedly connected to the stamping machine body, a strong electromagnetic suction cup is fixedly connected to the middle position of the die frame, the strong electromagnetic suction cup is externally connected to a power supply, an upper die head is arranged inside the upper die frame, and a lower die head that matches the upper die head is arranged inside the lower die frame; and the present invention has strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of stamping die equipment, in particular to a stamping die for an electronic product housing and a processing method thereof. Background Art

[0002] The stamping device is a special process equipment used to process materials into parts during cold stamping. Stamping is a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature to cause separation or plastic deformation, thereby obtaining the desired parts.

[0003] A Chinese patent with application number CN202322269212.7 discloses a rapid stamping die for an automobile chassis bracket. In the above patent document, one side of the first die is brought into contact with the second die, and then the control plate is pulled to extend the compression spring connected to one end of the fixed plate, so that the limit block connected to the other end of the fixed plate is inserted into the limit groove opened in the second die, and then the control plate is pressed to shrink the telescopic rod, and the control plate is rotated to drive the telescopic rod to rotate at one end of the bearing ring, and the thread provided on the outer wall of one end of the telescopic rod is engaged with the thread groove opened in the first die and rotated to connect to the inside, so as to limit the limit block connected to one end of the bearing ring through the fixed plate, and limit the second die through the limit block, thereby realizing the first The installation and disassembly effect of the mold and the second mold can avoid the mold being unable to be disassembled as a whole, resulting in space occupation and inconvenience in taking when stored; the slider is supported by a support spring to slide inside the slide groove opened by the first mold and the second mold, and the slider drives the limiting ring connected to the limiting plate connected to the bottom end to be sleeved on both sides of the outer wall of the stamping rod, and the outside of the slide groove opened by the first mold and the second mold is closed by the limiting plate, and the rubber pad sleeved on the outer wall of one end of the limiting plate protects the limiting plate to avoid hitting the first mold and the second mold when the limiting plate is displaced, and cushion it, and the limiting ring positions the active position of the stamping rod, and excess material can also move with the limiting ring to avoid sticking to the bottom surface of the first mold and the second mold.

[0004] The Chinese patent application number CN202022448871.3 discloses a stamping mold that is convenient for quick stripping. This application installs a downward pressing transmission rod, a transmission gear and a demoulding ejector rod, and under the continuous transmission of the stamping hydraulic cylinder, a transmission rack A and a transmission rack B are simultaneously arranged. The relative position of the downward pressing transmission rod and the demoulding ejector rod can make the demoulding ejector rod just extend to the upper end of the reserved groove after the upper die block and the lower die groove are pressed together, so as to separate the edge material of the mold and avoid the phenomenon that the product and the edge material are adhered to each other after the die is pressed, causing difficulty in stripping; the upper mold plate and the support rod are movably connected through the guide connecting block and the guide connecting ring. The movement direction of the upper template can be limited in the up and down directions. At the same time, under the transmission of the downward pressure transmission rod, transmission gear and demoulding ejector rod, the upper template is prevented from falling off suddenly, causing damage to the lower template and the lower die groove, thereby greatly improving the stability of the stamping die; by installing a shock-absorbing protection pad, when the demoulding ejector rod protects the upper template, the demoulding ejector rod can avoid the rigid collision with the upper template, causing damage to the upper template, further improving the service life of the mold. The installed sliding protection ring can protect the two groups of components when they are in motion, avoiding wear caused by long-term friction between the two groups of components, and improving the service life of the mold. However, the following problems still exist in actual applications, specifically:

[0005] 1. The operation of disassembling and replacing the mold is cumbersome. In addition, the mold needs to be clamped and positioned quickly. The upper mold head needs to be manually lifted, and the upper and lower mold heads cannot be pre-fixed, which increases the workload of the workers.

[0006] 2. Before stamping, the plate to be stamped cannot be effectively limited and guided, and it is not convenient to pre-flatten the plate, which affects the quality of the stamped parts and cannot be applied to plates of different widths and thicknesses;

[0007] 3. Although the stamping parts can be assisted in demoulding, there will be some debris retained in the lower die head after demoulding, and the debris cannot be effectively cleaned during the demoulding process to ensure the quality of subsequent stamping parts.

[0008] Therefore, the present invention provides an electronic product housing stamping die and a processing method thereof to solve the above problems. Summary of the invention

[0009] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a stamping mold for an electronic product shell and a processing method thereof, which effectively solves the problems of inconvenient disassembly and assembly of the stamping mold during the shell stamping process, inability to pre-fix the mold, inability to effectively clean the lower die head during auxiliary demolding of the stamping parts, and the retention of debris affecting the quality of the product.

[0010] The present invention comprises a punching machine body, on which two mold racks symmetrically distributed up and down are arranged, and mold clamping mechanisms are connected inside the mold racks, and the mold clamping mechanisms include four equally circumferentially distributed limiting clamping plates slidably connected to the mold racks, and the limiting clamping plates are fixedly connected to sliding rods penetrating the mold racks, and the sliding rods are coaxially slidably connected to piston sleeves fixedly connected to the mold racks, and the sliding rods and the piston sleeves are connected by springs, and the four piston sleeves are connected to a pressure supply device fixedly connected to the punching machine body, and a strong electromagnetic suction cup is fixedly connected to the middle position of the mold rack, and the strong electromagnetic suction cup is externally connected to a power supply;

[0011] An upper die head is arranged inside the mold frame on the upper side, and a lower die head matching with the upper die head is arranged inside the mold frame on the lower side. The upper die head and the lower die head are both in contact with and connected to the corresponding limit clamping plate. An iron sucker matching with the strong electromagnetic sucker is fixedly connected to the upper die head, the lower die head and the mold frame on one side where they are fitted.

[0012] The lower wall of the lower die head is provided with two symmetrically distributed demoulding holes, the demoulding holes are coaxially slidably connected with a sealing circular plate matched with the demoulding holes, the lower end of the sealing circular plate is coaxially fixedly connected with a lifting push plate, the lower end of the lifting push plate is coaxially slidably connected with a hydraulic sleeve, the lower end of the hydraulic sleeve is coaxially fixedly connected with an oil inlet pipe, and the oil inlet pipe is connected to an external oil supply device;

[0013] The left and right ends of the mold frame on the lower side are fixedly connected with two symmetrically distributed support plates, the upper ends of the support plates are fixedly connected with support vertical plates symmetrically distributed front and back, and the support plates are connected with two front-to-back symmetrically distributed limit guide mechanisms, and the limit guide structure includes two front-to-back symmetrically distributed limit frames, the limit frames are connected to the support plates, and the limit rollers are rotatably connected to the limit frames.

[0014] Preferably, the support plate is rotatably connected with a guide roller, the support vertical plates are provided with lifting adjustment rails, two lifting adjustment rails symmetrically arranged front and rear are internally connected with lifting slides for sliding up and down, a correction roller is rotatably connected between the two lifting slides, the lifting adjustment rails are internally connected with a lifting plate for sliding up and down, and the lifting slides and the lifting plate are connected by a spring;

[0015] The upper ends of the lifting plates are fixedly connected with lifting threaded rods, the upper ends of the supporting vertical plates are rotatably connected with adjusting threaded sleeves rotatably connected with the supporting vertical plates, the front and rear adjusting threaded sleeves are connected by a sprocket transmission mechanism, and one of the adjusting threaded sleeves is fixedly connected with a rotating handwheel.

[0016] Preferably, the outer wall of the lifting push plate is coaxially connected to a rotating sleeve, the outer wall of the rotating sleeve is in contact with the inner wall of the hydraulic sleeve, a spiral track is provided on the outer wall of the rotating sleeve, the upper end of the rotating sleeve is coaxially fixedly connected to an annular air supply box sleeved on the outer periphery of the lifting push plate, a plurality of air injection holes are provided on the annular air supply box, and the annular air supply box is connected to an external air supply device;

[0017] The outer peripheral sleeve of the upper end of the rotating sleeve is provided with a limiting sleeve fixedly connected to the mold frame, and the inner wall of the limiting sleeve is fixedly connected with a limiting pin matched with the spiral track.

[0018] Preferably, the air injection holes are distributed spirally along the rotating sleeve.

[0019] Preferably, a lifting and fixing frame which is slidably connected to the supporting vertical plate is arranged on one side of the supporting plate close to the mold frame, a lifting and fixing frame is connected to a lifting and adjusting plate at the lower end, a plurality of pressing columns are fixedly connected to the lower end of the lifting and adjusting plate, and the lifting and fixing frame has an external driving source.

[0020] Preferably, the upper end of the lifting and fixing frame is provided with a sliding inclined track, the interior of the sliding inclined track is slidably connected with a sliding frame that is slidably connected to the support plate front and back, the sliding frames are threadedly connected with a pressing screw rod, and the pressing screw rod is rotatably connected to the support vertical plate;

[0021] The two pressing screw rods are connected via a chain transmission mechanism, and one of the pressing screw rods is connected to an external driving source;

[0022] The lifting adjustment plate and the lifting fixed frame are slidably connected up and down, a plurality of adjustment holes are opened at the lower end of the lifting fixed frame, and the adjustment holes are all threadedly connected with adjustment screws. The adjustment screws are rotatably connected to the upper end of the lifting adjustment plate, and the adjustment screws are connected through a chain transmission mechanism.

[0023] Preferably, the four corners of the mold frame on the lower side are provided with storage circular rails, the interior of the storage circular rails are fixedly connected with telescopic springs, and the upper ends of the telescopic springs are fixedly connected with pressing discs.

[0024] Preferably, the limit frame and the support plate are connected in a forward and backward sliding manner, an adjustment track is provided on the support plate, a double-headed screw is rotatably connected inside the adjustment track, and the limit frame and the double-headed screw on the same side of the adjustment track are threadedly connected;

[0025] The two double-headed screw rods symmetrically distributed on the left and right are connected through a chain transmission mechanism, and one of the double-headed screw rods is coaxially fixedly connected with an adjusting hand wheel.

[0026] Preferably, the side of the limit card plate close to the upper die head and the lower die head is made of elastic friction material, and a pressure sensor in contact with the upper die head and the lower die head is fixedly connected to the limit card plate, and the pressure sensor is connected to the pressure supply device.

[0027] A method for using a stamping die for an electronic product housing comprises the following steps:

[0028] Step 1: First, install the upper die head and the lower die head to the corresponding positions;

[0029] Step 2: Start the pressure supply device to synchronously drive the limit clamping plate, thereby clamping and fixing the upper die head and the lower die head;

[0030] Step 3: Then, the distance between the limit frames is adjusted by rotating the adjustment hand wheel, and then the plate strip passes through the support plate and is located between the two limit frames that are symmetrical in front and back;

[0031] Step 4: then start the punching machine body to punch the sheet strip;

[0032] Step 5: Start the oil supply device and the air supply device, and realize the demoulding of the stamping part through the lifting push rod and the sealing circular plate, and realize the cleaning of the inside of the lower die head;

[0033] Step 6: Reset each part.

[0034] The present invention improves the existing heat exchanger and has the following beneficial effects:

[0035] 1. By setting up the mold frame, limit card plate, sliding rod, piston sleeve, strong electromagnetic suction cup and other structures, the problem of facilitating the replacement of different die heads and quickly replacing and fixing the die heads is effectively solved;

[0036] 2. The problem of cleaning the inside of the lower die head during auxiliary demoulding of stamping parts is effectively solved by setting demoulding holes, sealing circular plates, lifting push plates, hydraulic sleeves, rotating sleeve spiral tracks, annular air supply boxes, limit sleeves and limit pins.

[0037] 3. By setting the air jet holes to be distributed in a spiral ascending state, the problem that the debris cannot be blown to the top of the lower die head during the cleaning process of the lower die head is effectively solved, thereby ensuring the cleaning effect of the lower die head;

[0038] 4. By setting up structures such as a lifting fixed frame, a lifting adjustment plate, a pressing column, a pressing screw, a limit frame and a guide roller, the problem of being able to adapt to plates of different widths and thicknesses is effectively solved, thereby ensuring the problem of effective limit guidance and pressing fixation of the plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0040] Figure 2 It is a partial schematic diagram of the present invention.

[0041] Figure 3 It is a schematic diagram of the installation of the upper die head and the lower die head of the present invention.

[0042] Figure 4 It is a schematic diagram of the internal structure connection of the mold frame of the present invention.

[0043] Figure 5 It is a schematic diagram of the lower die head and its internal structure of the present invention.

[0044] Figure 6 It is a schematic diagram of the lifting push plate and its driving mechanism of the present invention.

[0045] Figure 7 It is a schematic diagram of the rotating sleeve and its connecting parts of the present invention.

[0046] Figure 8 It is a schematic diagram of the support plate and its connecting parts of the present invention.

[0047] Fig. 9 It is a schematic diagram of the upper die head and its connection structure of the present invention.

[0048] Fig.10 It is a schematic diagram of the mold frame structure of the present invention.

[0049] Fig.11 It is a schematic diagram of the connection method between the mold frame and the lower mold head of the present invention.

[0050] Fig.12 It is a schematic diagram of the lifting and fixing frame and its connecting parts of the present invention.

[0051] Figure numerals: 1, punching machine body; 2, die frame; 3, limit card plate; 4, sliding slide rod; 5, piston sleeve; 6, strong electromagnetic suction cup; 7, upper die head; 8, lower die head; 9, iron suction cup; 10, demoulding hole; 11, sealing circular plate; 12, lifting push plate; 13, hydraulic sleeve; 14, oil inlet pipe; 15, support plate; 16, support vertical plate; 17, limit frame; 18, limit roller; 19, guide roller; 20, lifting adjustment rail; 21, lifting slide plate; 22, correction roller; 23. Lifting plate; 24. Lifting threaded rod; 25. Adjusting threaded sleeve; 26. Rotating sleeve; 27. Spiral track; 28. Annular air supply box; 29. ​​Jet hole; 30. Limiting sleeve; 31. Lifting fixed frame; 32. Lifting adjustment plate; 33. Pressing column; 34. Sliding inclined track; 35. Sliding frame; 36. Pressing screw; 37. Adjusting hole; 38. Adjusting screw; 39. Storage circular rail; 40. Telescopic spring; 41. Pressing disc; 42. Adjusting track; 43. Double-headed screw. DETAILED DESCRIPTION

[0052] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figures 1 to 12 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0053] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0054] The present invention is a stamping processing die for an electronic product shell and a processing method thereof, comprising a stamping machine body 1, wherein the stamping machine body 1 is an existing stamping machine for realizing stamping processing, and the stamping machine body 1 is a conventional stamping machine, which will not be described in detail herein. The stamping machine body 1 is provided with two die racks 2 symmetrically distributed up and down, and the die rack 2 on the upper side is connected to the stamping telescopic mechanism at the upper end of the stamping machine body 1, and the die rack 2 on the upper side is driven to slide up and down synchronously through the telescopic mechanism of the stamping machine body 1 to realize stamping processing. In order to realize effective clamping selection of the die, the die rack 2 is connected to the inside of the die rack 2 with a die clamping mechanism, and the die clamping mechanism includes four equally circumferentially distributed limit clamps 3 slidably connected to the die rack 2, and the limit clamps 3 are fixedly connected to a sliding member that penetrates the die rack 2. The sliding rod 4, the sliding sliding rod 4 is coaxially slidably connected with the piston sleeve 5 fixedly connected to the mold frame 2, the sliding sliding rod 4 and the piston sleeve 5 are connected by a spring, the sliding sliding rod 4 slides in the piston sleeve 5, and then drives the limiting card plate 3 to slide synchronously, the four piston sleeves 5 are connected to the pressure supply device fixedly connected to the punching machine body 1, and the synchronous pressure supply to the piston sleeve 5 is achieved through the pressure supply device, thereby driving the four sliding sliding rods to slide synchronously, and then driving the four limiting card plates 3 to slide synchronously, and the middle position of the mold frame 2 is fixedly connected with a strong electromagnetic suction cup 6, the strong electromagnetic suction cup 6 is externally connected to the power supply, and the effective adsorption of the subsequent magnetic components is achieved by turning the power on and off the strong electromagnetic suction cup 6.

[0055] An upper die head 7 is arranged inside the mold frame 2 on the upper side, and a lower die head 8 matching with the upper die head 7 is arranged inside the mold frame 2 on the lower side. The upper die head 7 and the lower die head 8 are both in contact with and connected to the corresponding limit card plate 3. The upper die head 7 and the lower die head 8 are effectively fixed and clamped by the limit card plate 3 to ensure the upper die head 7. The lower die head 8 is located in the middle position of the mold frame 2. The upper die head 7, the lower die head 8 and the mold frame 2 are fixedly connected with an iron suction cup 9 matching with the strong electromagnetic suction cup 6 on one side. The upper die head 7 and the lower die head 8 are effectively adsorbed and fixed by the strong electromagnetic suction cup 6 to avoid the problem of unstable fixation of the upper die head 7 and the lower die head 8. At the same time, the upper die head 7 and the lower die head 8 can be pre-adsorbed and fixed, which is convenient for replacing and installing the upper die head 7 and the lower die head 8.

[0056] In order to facilitate the demoulding of the stamped parts, ensure the unloading of the stamped parts, and improve the stamping efficiency, the lower wall of the lower die head 8 is provided with two symmetrically distributed demoulding holes 10, and the demoulding holes 10 are coaxially slidably connected with a sealing circular plate 11 that matches the demoulding holes 10. The demoulding holes 10 are sealed by the sealing circular plate 11, thereby ensuring the integrity of the lower die head 8 and the quality of the stamped parts after stamping. The lower end of the sealing circular plate 11 is coaxially fixedly connected with a lifting push plate 12, which slides up and down on the lifting push plate 12. The process drives the sealing circular plate 11 to slide synchronously. In the process of the lifting push plate 12 rising, the sealing circular plate 11 is driven to slide upward and then the stamping part is ejected from the lower die head 8. The lower end of the lifting push plate 12 is coaxially slidably connected with a hydraulic sleeve 13. The lower end of the hydraulic sleeve 13 is coaxially fixedly connected with an oil inlet pipe 14. The oil inlet pipe 14 is connected to an external oil supply device. The oil supply to the oil inlet pipe 14 is realized through the external oil supply device, and the hydraulic sleeve 13 is pressurized at the same time to realize the demolding of the stamping part.

[0057] In order to ensure that the plate to be punched can be accurately positioned between the upper die head 7 and the lower die head 8, and to limit the plate, the present embodiment provides a structure for limiting the plate. Specifically, the left and right ends of the mold frame 2 on the lower side are fixedly connected with two symmetrically distributed support plates 15, and the support and guidance of the stamping plate is achieved through the support plates 15. The upper ends of the support plates 15 are fixedly connected with support vertical plates 16 symmetrically distributed front and back, and the support plates 15 are connected with two symmetrically distributed front and back limit guide mechanisms. The limit guide structure includes The invention comprises two limit frames 17 which are symmetrically distributed front and back. In the present embodiment, the limit frame 17 is fixedly connected to the support plate 15, the limit frame 17 is connected to the support plate 15, the limit roller 18 is rotatably connected to the limit frame 17, the limit roller 18 is distributed in an arc shape away from one end of the die frame 2, and the limit frame 17 and the limit roller 18 are used to limit the plate to be stamped, so as to ensure that the middle position of the plate is located directly below the upper die head 7, thereby ensuring the effective stamping of the plate and the stamping quality of the stamped parts.

[0058] When this embodiment is implemented, the upper die head 7 and the lower die head 8 are first installed to the corresponding positions, and then the pressure supply device is started to synchronously drive the limit clamping plate 3, so as to clamp and fix the upper die head 7 and the lower die head 8, and then the sheet strip is passed through the support plate 15 between the two limit frames 17 symmetrically located in the front and back, and the sheet strip is limited by the limit roller 18, and then the stamping machine body 1 is started, and the stamping parts are stamped by the cooperation of the upper die head 7 and the lower die head 8. After the stamping is completed, the oil supply device supplies oil to the hydraulic sleeve 13, and at the same time drives the lifting and lowering push plate 12 to rise and fall. When the lifting and lowering push plate 12 rises and falls, it drives the sealing circular plate 11 to rise and fall synchronously, and then the stamped parts after stamping are pushed out of the lower die head 8, so as to realize the demoulding process. After the demoulding is completed, the next step of operation is carried out.

[0059] In order to ensure the quality of the stamped parts and the flatness of the surface after stamping, a structure for surface flattening of the sheet strips before stamping is required. Specifically, the support plate 15 is rotatably connected with a guide roller 19, and the support vertical plate 16 is provided with a lifting and adjusting rail 20. The two lifting and adjusting rails 20 symmetrically arranged in front and back are internally connected with a lifting slide 21 for sliding up and down movement, and a correction roller 22 is rotatably connected between the two lifting slides 21. Through the cooperation of the correction roller 22 and the guide roller 19, the sheet strips are corrected and flattened. At the same time, in order to be suitable for sheet strips of different thicknesses and avoid the problem of jamming during the sheet strip transportation process, the lifting and adjusting rail 20 is internally connected with a lifting plate 23 for sliding up and down movement, and the lifting slide 21 and the lifting plate 23 are connected by a spring. Under the action of strong friction and extrusion force, the lifting slide 21 slides slightly, thereby ensuring the smoothness of sheet strip transportation.

[0060] In order to be suitable for plate strips with large thickness differences, it is necessary to adjust the distance between the lifting slide 21 and the support plate 15 accordingly. Therefore, a structure for adjusting the height of the lifting slide 21 is provided. Specifically, the upper ends of the lifting plates 23 are fixedly connected with lifting threaded rods 24, and the upper ends of the support vertical plates 16 are rotatably connected with adjusting threaded sleeves 25 rotatably connected with the support vertical plates 16. The front and rear adjusting threaded sleeves 25 are connected by a sprocket transmission mechanism, and one of the adjusting threaded sleeves 25 is fixedly connected with a rotating hand wheel. Rotating the rotating hand wheel drives the adjusting threaded sleeve 25 to rotate synchronously. The adjusting threaded sleeve 25 rotates synchronously and drives the lifting threaded rod 24 to rise and fall at the same time. The lifting and falling of the lifting threaded rod 24 drives the lifting slide 21 to slide synchronously, thereby realizing the adjustment of the height of the lifting slide 21.

[0061] During the stamping process, if there are debris remaining inside the lower die head 8, it will affect the quality of the stamped parts, so it is necessary to clean the inside of the lower die head 8. Specifically, the outer wall of the lifting push plate 12 is coaxially connected with a rotating sleeve 26, the outer wall of the rotating sleeve 26 is in contact with the inner wall of the hydraulic sleeve 13, and the outer wall of the rotating sleeve 26 is provided with a spiral track 27. The upper end of the rotating sleeve 26 is coaxially fixedly connected with an annular air supply box 28 sleeved on the outer periphery of the lifting push plate 12. During the rotation of the rotating sleeve 26, the annular air supply box 28 is driven to rotate synchronously. A number of jet holes 29 are provided on the annular air supply box 28. By jetting air to the outside through the jet holes 29, the cleaning of the inside of the lower die head 8 is achieved. The annular air supply box 28 is connected to an external air supply device, and air is supplied to the annular air supply box 28 through the external air supply device.

[0062] The upper outer sleeve of the rotating sleeve 26 is provided with a limit sleeve 30 fixedly connected to the mold frame 2, and the inner wall of the limit sleeve 30 is fixedly connected with a limit pin matched with the spiral track 27. When the lifting and lowering push plate 12 is lifted and lowered, the rotating sleeve 26 is driven to rise and fall synchronously. At the same time, the rotating sleeve 26 rotates on its own under the cooperation of the spiral track 27 and the limit pin, and then the annular air supply box 28 is driven to rotate synchronously through the rotating sleeve 26, so that in the process of demolding the stamping parts, the inner wall of the lower die head 8 is blown and cleaned through the annular air supply box 28, thereby ensuring the cleanliness of the inside of the lower die head 8 and the quality of the stamping parts after stamping.

[0063] In order to form an ascending airflow and smoothly carry the debris out of the lower die head 8, the jet holes 29 are spirally distributed along the rotating sleeve 26 to form a spiral ascending airflow, so that the debris inside the lower die head 8 flows with the airflow, thereby cleaning the lower die head 8.

[0064] In the process of stamping the sheet strips, in order to avoid displacement and sliding of the sheet strips, which may affect the quality of the stamped parts and even cause incomplete stamping, a structure for strong pressure fixing of the sheet strips is provided. Specifically, the support plate 15 is provided with a lifting and fixing frame 31 which is slidably connected to the support vertical plate 16 on one side close to the mold frame 2. The lower end of the lifting and fixing frame 31 is connected to a lifting and adjusting plate 32. The lower end of the lifting and adjusting plate 32 is fixedly connected to a plurality of pressing columns 33. The sheet strips are fixed by the pressing columns 33 and the lifting and adjusting plate 32. In the process of stamping the sheet strips, the sheet strips are effectively fixed. The lifting and fixing frame 31 is an external driving source, and the lifting and adjusting plate 32 is driven by the external driving source.

[0065] In order to achieve effective driving of the lifting and adjusting plate 32 and ensure effective fixation of the position of the lifting and adjusting plate 32 to avoid slight sliding, which would cause the problem of loose fixation of the plate strip, an inclined sliding track 34 is provided at the upper end of the lifting and fixing frame 31. A sliding frame 35 connected to the support plate 15 for front and rear sliding is slidably connected inside the sliding inclined track 34. Through the cooperation of the sliding frame 35 and the inclined sliding track 34, the sliding process of the sliding frame 35 drives the lifting and fixing frame 31 to slide up and down. The sliding frame 35 is threadedly connected with a pressing screw rod 36. The pressing screw rod 36 is rotatably connected to the support vertical plate 16. The pressing screw rod 36 rotates to drive the sliding frame 35 to slide. The sliding of the sliding frame 35 drives the lifting and fixing frame 31 while it slides. At the same time, the pressing screw rod 36 is used to lock the sliding frame 35, so as to avoid the sliding frame 35 from shaking and affecting the stability of the lifting and fixing frame 31.

[0066] The two pressing screw rods 36 are connected by a chain transmission mechanism, one of which is connected to an external driving source. The chain transmission mechanism is used to realize synchronous rotation of the two pressing screw rods 36, thereby realizing uniform adjustment of the height of the lifting and fixing frame 31.

[0067] Due to the different thicknesses of the sheet strips, when the lifting and adjusting plate 32 slides the same distance, the degree of extrusion of the sheet strips is different. Therefore, in order to use sheet strips of different thicknesses, a structure for adjusting the position height of the pressing column 33 is provided. Specifically, the lifting and adjusting plate 32 and the lifting and fixing frame 31 are slidably connected up and down, and a plurality of adjustment holes 37 are opened at the lower end of the lifting and fixing frame 31. The adjustment holes 37 are all threaded with adjustment screws 38. The rotation process of the adjustment screws 38 realizes the lifting and sliding in the adjustment holes 37. The adjustment screws 38 are rotatably connected to the upper end of the lifting and adjusting plate 32. The adjustment screws 38 are connected through a chain transmission mechanism. By rotating one of the adjustment screws 38, the linkage of the plurality of adjustment screws 38 is realized. At the same time, during the rotation process of the adjustment screws 38, the lifting and adjusting plate 32 is driven to rise and fall synchronously, thereby realizing the adjustment of the height of the pressing column 33.

[0068] In order to avoid violent collision between the upper die head 7 and the lower die head 8 and ensure the service life of the upper die head 7 and the lower die head 8, the four corners of the mold frame 2 on the lower side are provided with storage circular rails 39, and the interior of the storage circular rails 39 is fixedly connected with a telescopic spring 40, and the upper end of the telescopic spring 40 is fixedly connected with a pressing disc 41. The telescopic spring 40 is telescoped to buffer the impact force, thereby avoiding violent collision between the upper die head 7 and the lower die head 8 and extending the service life of the upper die head 7 and the lower die head 8.

[0069] Due to the different widths of the stamping parts, the widths of the sheet strips are also different. In order to improve the universality of the device and to be able to be used in conjunction with different upper dies 7 and lower dies 8, the limit frame 17 and the support plate 15 are connected in a front-to-rear sliding manner, and an adjusting rail 42 is provided on the support plate 15. A double-headed screw rod 43 is rotatably connected inside the adjusting rail 42. The limit frame 17 and the double-headed screw rod 43 on the same side of the adjusting rail 42 are threadedly connected, and the double-headed screw rod 43 is driven to drive the two front-to-rear symmetrical limit frames 17 to slide synchronously in the opposite directions to limit the sheet strips of different widths. The two double-headed screw rods 43 symmetrically distributed on the left and right are connected by a chain transmission mechanism, and one of the double-headed screw rods 43 is coaxially fixedly connected with an adjusting hand wheel, and the two double-headed screw rods 43 are synchronously driven by the rotation of the adjusting hand wheel, thereby realizing the synchronous drive of the limit frame 17 to adapt to sheet strips of different widths.

[0070] In order to ensure that the limit clamping plate 3 effectively clamps and fixes the upper die head 7 and the lower die head 8, the side of the limit clamping plate 3 close to the upper die head 7 and the lower die head 8 is made of elastic friction material, and the limit clamping plate 3 is fixedly connected with a pressure sensor in contact with the upper die head 7 and the lower die head 8. The pressure sensor is connected to the pressure supply device, and the clamping force between the limit clamping plate 3 and the upper die head 7 and the lower die head 8 is monitored by the pressure sensor to ensure effective clamping of the upper die head 7 and the lower die head 8, while avoiding excessive clamping force to cause deformation of the upper die head 7 and the lower die head 8.

[0071] When the present invention is used in practice, the upper die head 7 and the lower die head 8 are first installed to the corresponding positions, and then the pressure supply device is started to synchronously drive the limit clamping plate 3, thereby achieving the clamping and fixing of the upper die head 7 and the lower die head 8, and then the distance between the limit frames 17 is adjusted by rotating the adjustment hand wheel, and then the sheet strip passes through the support plate 15 and is located between the two limit frames 17 symmetrically in front and back, and the sheet strip is limited by the limit roller 18, and then the punching machine body 1 is started, and the upper die head 7 and the lower die head 8 cooperate to achieve the above-mentioned. After the stamping of the stamping parts is completed, the oil supply device realizes the oil supply to the hydraulic sleeve 13, and at the same time drives the lifting and lowering push plate 12 to rise and fall. When the lifting and lowering push plate 12 rises and falls, it drives the sealing circular plate 11 to rise and fall synchronously, and then pushes the stamping parts after the stamping out of the lower die head 8. At the same time, the air supply device supplies air to the annular air supply box 28, so that the airflow rises and falls synchronously with the lifting and lowering push plate 12. At the same time, under the action of the spiral track 27 and the limit pin, the annular air supply box 28 is rotated, thereby realizing the cleaning of the debris inside the lower die head 8.

[0072] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A stamping die for an electronic product housing, comprising a stamping machine body (1), characterized in that: The punching machine body (1) is provided with two mold racks (2) symmetrically distributed up and down, and the mold racks (2) are connected to the inside of the mold racks (2), and the mold clamping mechanism includes four equally circumferentially distributed limit clamps (3) slidably connected to the mold racks (2), and the limit clamps (3) are fixedly connected to a sliding rod (4) that runs through the mold rack (2), and the sliding rods (4) are coaxially slidably connected to a piston sleeve (5) fixedly connected to the mold rack (2), and the sliding rod (4) and the piston sleeve (5) are connected by a spring, and the four piston sleeves (5) are connected to a pressure supply device fixedly connected to the punching machine body (1), and the middle position of the mold rack (2) is fixedly connected to a strong electromagnetic suction cup (6), and the strong electromagnetic suction cup (6) is externally connected to a power supply; An upper die head (7) is disposed inside the mold frame (2) on the upper side, and a lower die head (8) matched with the upper die head (7) is disposed inside the mold frame (2) on the lower side. The upper die head (7) and the lower die head (8) are both in contact with and connected to the corresponding limit clamping plate (3). An iron suction cup (9) matched with the strong electromagnetic suction cup (6) is fixedly connected to the upper die head (7), the lower die head (8) and the mold frame (2) on one side where they are fitted. The lower wall of the lower die head (8) is provided with two symmetrically distributed demoulding holes (10), the demoulding holes (10) are coaxially slidably connected with a sealing circular plate (11) matching with the demoulding holes (10), the lower end of the sealing circular plate (11) is coaxially fixedly connected with a lifting push plate (12), the lower end of the lifting push plate (12) is coaxially slidably connected with a hydraulic sleeve (13), the lower end of the hydraulic sleeve (13) is coaxially fixedly connected with an oil inlet pipe (14), and the oil inlet pipe (14) is connected to an external oil supply device; The left and right ends of the mold frame (2) on the lower side are fixedly connected to two symmetrically distributed support plates (15), the upper ends of the support plates (15) are fixedly connected to support vertical plates (16) that are symmetrically distributed front and back, and the support plates (15) are connected to two front-to-back symmetrically distributed limit guide mechanisms, the limit guide structure includes two front-to-back symmetrically distributed limit frames (17), the limit frames (17) are connected to the support plates (15), and the limit frames (17) are rotatably connected to limit rollers (18).

2. The electronic product housing stamping die according to claim 1, characterized in that: The support plate (15) is rotatably connected to a guide roller (19), the support vertical plate (16) is provided with a lifting adjustment rail (20), two lifting adjustment rails (20) symmetrically disposed front and rear are internally connected to a lifting slide plate (21) for sliding up and down, a correction roller (22) is rotatably connected between the two lifting slide plates (21), the lifting adjustment rail (20) is internally connected to a lifting plate (23) for sliding up and down, and the lifting slide plate (21) and the lifting plate (23) are connected via a spring; The upper ends of the lifting plates (23) are fixedly connected to lifting threaded rods (24), the upper ends of the supporting vertical plates (16) are rotatably connected to adjusting threaded sleeves (25) rotatably connected to the supporting vertical plates (16), the front and rear adjusting threaded sleeves (25) are connected via a sprocket transmission mechanism, and one of the adjusting threaded sleeves (25) is fixedly connected to a rotating hand wheel.

3. The electronic product housing stamping die according to claim 2, characterized in that: The outer wall of the lifting push plate (12) is coaxially rotatably connected with a rotating sleeve (26), the outer wall of the rotating sleeve (26) is in contact with the inner wall of the hydraulic sleeve (13), the outer wall of the rotating sleeve (26) is provided with a spiral track (27), the upper end of the rotating sleeve (26) is coaxially fixedly connected with an annular air supply box (28) sleeved on the outer periphery of the lifting push plate (12), the annular air supply box (28) is provided with a plurality of air injection holes (29), and the annular air supply box (28) is connected to an external air supply device; The upper outer periphery of the rotating sleeve (26) is provided with a limiting sleeve (30) fixedly connected to the mold frame (2), and the inner wall of the limiting sleeve (30) is fixedly connected with a limiting pin that matches the spiral track (27).

4. The electronic product housing stamping die according to claim 3, characterized in that: The air injection holes (29) are distributed spirally along the rotating sleeve (26).

5. The electronic product housing stamping die according to claim 4, characterized in that: A lifting fixed frame (31) is arranged on one side of the support plate (15) close to the mold frame (2) and is slidably connected to the support vertical plate (16) up and down. The lower end of the lifting fixed frame (31) is connected to a lifting adjustment plate (32). The lower end of the lifting adjustment plate (32) is fixedly connected to a plurality of pressing columns (33). The lifting fixed frame (31) has an external driving source.

6. The electronic product housing stamping die according to claim 5, characterized in that: The upper end of the lifting and fixing frame (31) is provided with a sliding inclined track (34), the interior of the sliding inclined track (34) is slidably connected to a sliding frame (35) which is slidably connected to the support plate (15) in a front-rear manner, the sliding frame (35) is threadedly connected to a pressing screw rod (36), and the pressing screw rod (36) is rotatably connected to the support vertical plate (16); The two pressing screw rods (36) are connected via a chain transmission mechanism, and one of the pressing screw rods (36) is connected to an external driving source; The lifting adjustment plate (32) and the lifting fixing frame (31) are slidably connected up and down, a plurality of adjustment holes (37) are opened at the lower end of the lifting fixing frame (31), and an adjustment screw (38) is threadedly connected in each of the adjustment holes (37). The adjustment screw (38) and the upper end of the lifting adjustment plate (32) are rotatably connected, and the adjustment screw (38) is connected via a chain transmission mechanism.

7. The electronic product housing stamping die according to claim 1, characterized in that: The mold frame (2) at the lower side is provided with storage circular rails (39) at four corners, and telescopic springs (40) are fixedly connected inside the storage circular rails (39), and pressing discs (41) are fixedly connected to the upper ends of the telescopic springs (40).

8. The electronic product housing stamping die according to claim 1, characterized in that: The limit frame (17) and the support plate (15) are connected in a forward and backward sliding manner, the support plate (15) is provided with an adjustment track (42), a double-headed screw rod (43) is rotatably connected inside the adjustment track (42), and the limit frame (17) and the double-headed screw rod (43) on the same side of the adjustment track (42) are threadedly connected; The two double-ended screw rods (43) symmetrically distributed on the left and right are connected via a chain transmission mechanism, and one of the double-ended screw rods (43) is coaxially fixedly connected to an adjusting hand wheel.

9. The electronic product housing stamping die according to claim 1, characterized in that: The side of the limit clamping plate (3) close to the upper die head (7) and the lower die head (8) is made of elastic friction material, and a pressure sensor in contact with the upper die head (7) and the lower die head (8) is fixedly connected to the limit clamping plate (3), and the pressure sensor is connected to the pressure supply device.

10. A method for processing a stamping die for an electronic product housing, characterized in that: The electronic product housing stamping die according to claim 6 comprises the following steps: Step 1: firstly install the upper die head (7) and the lower die head (8) to corresponding positions; Step 2: starting the pressure supply device to synchronously drive the limit clamping plate (3), thereby clamping and fixing the upper die head (7) and the lower die head (8); Step 3: Then, the distance between the limiting frames (17) is adjusted by rotating the adjusting hand wheel, and then the plate strip passes through the supporting plate (15) and is located between the two limiting frames (17) that are symmetrical in front and back; Step 4: then starting the punching machine body (1) to perform the punching process; Step 5: Start the oil supply device and the air supply device, and realize the demoulding process of the stamping part through the lifting push plate (12) and the sealing circular plate (11), and realize the cleaning process of the interior of the lower die head (8); Step 6: Reset each part.

Images