Automobile panel punching equipment

Abstract

The present invention relates to the field of punching technology and discloses an automobile panel punching device, comprising an upper template arranged for lifting, a punch die set arranged on the upper template, a lower template located below the upper template and a punching die set on the lower template, the lower template is divided into a fixed support platform and a movable platform flush with the upper end surface of the support platform and capable of X-axis translation or Y-axis translation or locking relative to the support platform, the movement or locking of the movable platform is controlled by a drive control component, the punching die is arranged on the support platform, a plurality of first adsorption holes for adsorbing workpieces are arranged on the edge of the punching die on the support platform, a plurality of second adsorption holes for adsorbing workpieces are arranged on the upper end surface of the movable platform, the first adsorption holes and the second adsorption holes are respectively controlled by a first air pressure switching component and a second air pressure switching component, the device can adapt to continuous vertical punching of flat plate materials of different thicknesses at any horizontal position, thereby improving adaptability and increasing the quality of punching.

Description

Technical Field

[0001] The present invention relates to the technical field of punching, and in particular to an automobile panel punching device. Background Art

[0002] Chinese patent application number 201510316878.0 discloses a punching device, which includes an upper die base, a stamping assembly arranged on the upper die base, a lower die base for placing the product, and a moving assembly fixed to the product and driving the product to move; the moving assembly includes a suction member for fixing the product, a transverse moving member for fixing the suction member, the transverse moving member is an electronic telescopic rod, and a longitudinal moving member fixed to the transverse moving member, the longitudinal moving member is a guide rail.

[0003] The above structure has the following deficiencies: it is obviously impossible to use the guide rail to control the vertical position of the product, and the moving component of the comparative document must simultaneously meet the performance of being able to be adjusted along the X-axis, Y-axis and Z-axis in order to achieve the adsorption of plates of different heights and punching of different parts of the workpiece, while the product can only move back and forth in one direction in the horizontal direction. Therefore, it is impossible to punch holes at any horizontal position of the workpiece, and the adaptability needs to be improved; in addition, the limiting force of the workpiece during punching is only due to the adsorption performance of the moving component. Not only is the limiting structure for locking the moving component not disclosed in the article, but the distance between the absorption of the workpiece by the moving component and the punching part is constantly changing, resulting in the punching part being easily offset when the punching pressure acts, and the offset is uncontrollable, affecting the quality of the punching. Summary of the Invention

[0004] In view of the shortcomings of existing punching equipment, that is, the adaptability and punching quality need to be improved, the present invention provides an automobile panel punching equipment that can punch holes at any horizontal position of different panels and has stable punching performance.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] A punching device for automobile panels, comprising an upper template arranged for lifting, a punch die set arranged on the upper template, a lower template located below the upper template, and a punching die set on the lower template, the lower template is divided into a fixed support platform and a mobile platform flush with the upper end surface of the support platform and capable of X-axis translation or Y-axis translation or locking relative to the support platform, the movement or locking of the mobile platform is controlled by a drive control component, the drive control component comprises a guide groove opened on the side wall of the support platform along the width direction of the support platform and a sliding seat with one end embedded in the guide sliding on the guide groove, the mobile platform is embedded in the sliding seat and slides back and forth in a horizontal direction perpendicular to the sliding direction of the sliding seat, and there is a gap between the sliding seat and the support platform. A control switching component is provided between the guide slots for realizing the movement of the mobile platform along the guide slots, the horizontal movement of the mobile platform perpendicular to the guide slots, or the locking of the mobile platform relative to the fixed platform. The punching module is provided on the supporting platform. A plurality of first adsorption holes for adsorbing workpieces are provided on the edge of the punching module on the supporting platform. A plurality of second adsorption holes for adsorbing workpieces are provided on the upper end surface of the mobile platform. The first adsorption holes and the second adsorption holes are respectively controlled by the first air pressure switching component and the second air pressure switching component. When the mobile platform moves, the first adsorption hole is in a normal pressure state and the second adsorption hole is in a negative pressure state; when the mobile platform is locked, the first adsorption hole is in a negative pressure state, and the second adsorption hole is in a negative pressure or normal pressure state.

[0007] By adopting the above scheme, the lower template is directly divided into a supporting platform on which a punching module is installed and a sliding movable platform. The upper end surface of the movable platform is flush with the upper end surface of the supporting platform. Therefore, the workpiece does not need to be leveled on the Z axis and can adapt to workpieces of different thicknesses. The movable platform can slide relative to the supporting platform in the X axis and the Y axis. The first air pressure switching component and the second air pressure switching component of the first adsorption hole and the second adsorption hole that can be independently controlled are respectively provided on the supporting platform and the movable platform. After the workpiece is placed on the lower template, it can be ensured to be placed horizontally, and after the movable platform adsorbs the workpiece, the supporting platform desorbs the workpiece. When the movable platform moves along the X axis or the Y axis, the part of the workpiece to be opened is aligned with the punching module, and the movable platform is locked after alignment. The workpiece is adsorbed by at least the first adsorption hole, and preferably by the first adsorption hole and the second adsorption hole at the same time, so that the workpiece does not shift when the punch module is punching, thereby ensuring the accuracy of the punching. The above punching equipment can adapt to continuous vertical punching of flat plate materials of different thicknesses at any horizontal position, thereby improving adaptability and increasing the quality of punching.

[0008] Preferably, the control switching assembly includes a rack fixed to the bottom of the guide groove and extending along the guide groove, a first driven gear horizontally arranged in the sliding seat and meshing with the rack, and two second driven gears horizontally rotated in the sliding seat at intervals, a synchronous gear chain is tensioned and meshed between the two second driven gears, a third driven gear is coaxially fixed on the second driven gear close to the first driven gear, and a switching gear assembly for realizing movement or locking of the mobile platform relative to the supporting platform is provided between the third driven gear and the first driven gear in the sliding seat.

[0009] Preferably, the switching gear assembly includes a first driving gear and a second driving gear distributed up and down and coaxially sleeved on a rotating shaft that passes through the upper and lower end surfaces of the sliding seat, a guide frame coaxially fixed to the rotating shaft and used to realize the first driving gear and the second driving gear to rotate synchronously with the rotating shaft and can be guided and moved along the axial direction of the rotating shaft, and a second driving motor installed on the sliding seat and used to drive the rotating shaft to rotate. A first electromagnetic control assembly and a second electromagnetic control assembly are respectively provided between the upper bottom surface of the sliding seat and the first driving gear and between the lower bottom surface of the sliding seat and the second driving gear, and are used to drive the first driving gear or the second driving gear to rise and fall and always rotate synchronously with the rotating shaft during the lifting process. An engagement limiting assembly is provided between the first driving gear and the upper bottom surface of the sliding seat for limiting the rotation of the first driving gear when the first driving gear rises to the maximum stroke;

[0010] When the first electromagnetic control component loses power and the second electromagnetic control component is energized, the first drive gear idles and the second drive gear engages with the third driven gear; when the first electromagnetic control component and the second electromagnetic control component lose power at the same time, the first drive gear engages with the first driven gear and the second drive gear is in an idling state; when the first electromagnetic control component and the second electromagnetic control component are energized at the same time, the engagement limiting component engages and the first drive gear and the second drive gear engage with the first driven gear and the third driven gear respectively.

[0011] By adopting the above scheme, the reciprocating guided sliding of the sliding seat along the guide groove (the moving seat performs Y-axis movement) is realized by means of the meshing of the first driven gear with the rack when the first driven gear rotates; the guided sliding of the moving seat along the sliding seat (the moving seat performs X-axis movement) is realized by means of the transmission movement of the bottom of the moving seat along the synchronous gear chain. The transmission of the synchronous gear chain is realized by the rotation of the two second driven gears, which is essentially realized by means of the rotation of a third driven gear fixed coaxially with the second driven gear. In the switching gear group, there are a first driving gear and a second driving gear, both of which are guided and moved along the axial direction of the rotating shaft while rotating synchronously with the rotating shaft. The axial guided movement of the first driving gear along the rotating shaft is controlled by the first electromagnetic control component, and the axial guided movement of the second driving gear along the rotating shaft is controlled by the second electromagnetic control component. During the switching process of the two sets of electromagnetic control components, the two, combined with the bite limit component, can respectively realize the function of the mobile platform performing X-axis movement or Y-axis movement or locking relative to the supporting platform.

[0012] Preferably, the guide frame includes a separating ring coaxially fixed on the rotating shaft outside the two ends of the first drive gear and the second drive gear where they move opposite to each other to the maximum stroke, and a guide rod fixed between the two separating rings and simultaneously guided and interwoven with the first drive gear and the second drive gear. The separating ring is made of non-magnetic material. The first electromagnetic control component includes a first electromagnetic ring fixed on the upper bottom surface of the sliding seat and rotatably engaged with the separating ring close to it through a bearing, a first boss convexly provided on the upper end of the first drive gear and with an iron ring embedded in the end face, and a second elastic member sleeved on the rotating shaft and elastically abutting the separating ring and the first boss at both ends respectively. The second electromagnetic control component has the same structure as the first electromagnetic control component.

[0013] By adopting the above scheme, in the guide frame, the guide rod is used to guide the first drive gear and the second drive gear, and the separating ring is rotatably arranged on the first electromagnetic ring and can allow magnetic force to pass through, so that the first drive gear can rise and be adsorbed with the separating ring when the first electromagnetic ring is energized. The second elastic member directly rotates synchronously with the separating ring and the first drive gear to avoid twisting of the second elastic member and reduce the friction force suffered by the first drive gear during rotation. If the first drive gear is directly adsorbed with the first electromagnetic ring, the friction force is mainly the sum of the sliding friction force caused by the suction force between the first drive gear and the first electromagnetic ring and the friction resistance caused by the pressure and twisting of the elastic member. After the improvement, the friction force is changed from sliding friction to rolling friction, and the friction resistance caused by the elastic member is eliminated, and the friction force is significantly reduced.

[0014] Preferably, the engagement limiting assembly includes a fixed gear disc coaxial with the rotating shaft and fixed to the upper bottom surface of the sliding seat, and a lifting gear disc coaxially fixed to the upper end surface of the first driving gear and meshing with the fixed gear disc when the first driving gear rises to the maximum stroke.

[0015] By adopting the above scheme, after the lifting gear plate engages with the fixed gear plate, the rotation of the first drive gear is restricted, so the rotation of the second drive gear can be restricted at the same time. At this time, as the first electromagnetic control component and the second electromagnetic control component are synchronously energized, the first drive gear is engaged with the first driven gear and the second drive gear is engaged with the third driven gear, and the mobile platform is locked relative to the supporting platform, thereby ensuring the stability of the workpiece positioned on the workbench under the action of the punching force.

[0016] Preferably, a matching platform is formed on the support platform in a depression on one side of the punching module, and a supporting roller that contacts the matching platform is rotatably provided on the bottom of the sliding seat.

[0017] By adopting the above solution, the provision of the supporting roller can reduce the demand for power of the second drive motor, and the movement of the sliding seat is more stable and smooth.

[0018] Preferably, the first air pressure switching component includes a plurality of first air channels horizontally arranged in the support platform, each first air channel is connected to one or more vertically arranged first adsorption holes, a first piston rod is sealed and moved in each first air channel, and the first piston rod is synchronously fixed to the first drive plate, and the movement of the first drive plate is controlled by the extension and contraction of the piston rod of the first cylinder.

[0019] With the above solution, as the first cylinder expands and contracts, the first piston rod is driven to expand and contract, thereby realizing the switching of the first adsorption hole between negative pressure and normal pressure. With the above design, one cylinder can independently control multiple first adsorption holes, thereby improving the effectiveness of adsorption.

[0020] Preferably, the punch die group includes a punching core which is lifted and lowered on the upper template and a punching sleeve which is sequentially sleeved outside the punching core and is used to increase the punching diameter. A first switching mechanism is provided between the upper template, the punching sleeve and the punching core, and when the upper template limits the required punching sleeve from the outside to the inside, the punching core obtains the remaining punching sleeve and carries the obtained punching sleeve to rise and fall; the punch die group includes a mating core column which is lifted and lowered on the support platform and a punching sleeve which is sequentially sleeved outside the mating core column. A second switching mechanism which is the same as the first switching mechanism is provided between the punching sleeve, the support platform and the mating core column. When the support platform obtains the required punching sleeve, the mating core column obtains the remaining punching sleeve and carries the obtained punching sleeve to synchronously descend until there is a mating distance between the support platform and the support platform for the punching debris to slide out.

[0021] Preferably, the second switching mechanism includes a limit plug that is elastically telescopic on the mating core column and can be completely retracted into the mating core column or partially extended to be horizontally plugged into all the punching sleeves, a first elastic member that drives the limit plug to be in an extended state, and an inlet bevel arranged at the upper end of the limit plug and shrinking when the limit plug is subjected to external force. The punching sleeve is provided with a through groove for the limit plug to be inserted into, and two clamping blocks that can be synchronously approached or moved away are provided on the lower template. The clamping blocks can be synchronously moved away to disengage from all the punching sleeves or synchronously approached to fit with the outer wall of the mating core column. The synchronous approach or distance of the clamping blocks is controlled by a driving member, and the driving member includes a forward and reverse screw rod that is horizontally rotated and arranged in the lower template and a first driving motor that drives the forward and reverse screw rod to rotate. A slider is provided on the forward and reverse thread sections of the forward and reverse screw rods, which move along the axial guide of the forward and reverse screw rods respectively, and a clamping block is fixed on each of the two sliders.

[0022] By adopting the above scheme, the aperture required for punching can be automatically switched. The first switching mechanism and the second switching mechanism have the same structure. As the clamping blocks approach each other, the upper template intercepts the required punching sleeve, and the lower template intercepts the required punching sleeve, while the punching core automatically obtains the remaining punching sleeve, and cooperates with the core column to automatically obtain the remaining punching sleeve. The punching core and the punching sleeve it obtains form a punching head, and as the punching core descends, the punching head punches the workpiece; as the core column and the punching sleeve it obtains descend, the support platform will have the required punching hole that cooperates with the punching head. The above design can automatically switch the punching aperture and significantly increase adaptability.

[0023] Preferably, the diameter of the mating core column is consistent with the stamping inner core, and the upper end of the mating core column is a conical blanking section with the tip facing upward and convenient for the stamping debris to slide off. When the mating core column obtains the punching sleeve, the upper end surface of the punching sleeve is located below the conical blanking section.

[0024] With the above solution, the design of the tapered blanking section can allow the stamping debris to slide smoothly along the inclined surface and achieve direct separation.

[0025] The present invention has significant technical effects due to the adoption of the above technical solutions:

[0026] The lower template is directly divided into a supporting platform on which a punching module is installed and a sliding movable platform. The upper end surface of the movable platform is flush with the upper end surface of the supporting platform, and the movable platform can slide relative to the supporting platform in the X-axis and Y-axis. The first air pressure switching component and the second air pressure switching component of the first adsorption hole and the second adsorption hole that can be independently controlled are respectively provided on the supporting platform and the movable platform. After the workpiece is placed on the lower template, it can be ensured to be placed horizontally, and after the movable platform adsorbs the workpiece, the supporting platform desorbs the workpiece. When the movable platform is performing X-axis or Y-axis movement, the part of the workpiece to be opened is aligned with the punching module, and the movable platform is locked after alignment. The workpiece is adsorbed by at least the first adsorption hole, preferably by the first adsorption hole and the second adsorption hole at the same time, so that the workpiece does not shift when the punch module is punching, thereby ensuring the accuracy of the punching. The above-mentioned punching equipment can adapt to continuous vertical punching of flat plate materials of different thicknesses at any horizontal position, thereby improving adaptability and increasing the quality of punching;

[0027] The aperture required for punching can be automatically switched. As the clamping blocks approach each other, the upper template retains the required punching sleeve, and the lower template retains the required punching sleeve, while the punching core automatically obtains the remaining punching sleeves and cooperates with the core column to automatically obtain the remaining punching sleeves. The punching core and the punching sleeves obtained by it form a punching head, and as the punching core descends, the punching head punches the workpiece; as the core column and the punching sleeve obtained by it descend, the support platform will have the required punching holes that cooperate with the punching head. The above design can automatically switch the punching aperture and significantly increase adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a front view of an automobile panel punching device according to this embodiment;

[0029] Figure 2 yes Figure 1 AA cross-sectional view;

[0030] Figure 3 yes Figure 2 A magnified view of A;

[0031] Figure 4 yes Figure 2 Cross-sectional view of BB;

[0032] Figure 5 yes Figure 4 An enlarged view of B;

[0033] Figure 6 is an axonometric view of the lower template equipped with the punching die set in this embodiment;

[0034] Figure 7 is a top view of the lower template equipped with the punching die set in this embodiment;

[0035] Figure 8 yes Figure 7 Cross-sectional view of CC;

[0036] Figure 9 yes Figure 8 Enlarged view of C;

[0037] Figure 10 yes Figure 9 D magnified image;

[0038] Figure 11 yes Figure 8 Magnified view of DD;

[0039] Figure 12 yes Figure 11 Enlarged view of E;

[0040] Figure 13 yes Figure 8 A magnified view of EE;

[0041] Figure 14 yes Figure 13 The enlarged view of F;

[0042] Figure 15 1 is an axonometric view of the switching gear assembly of this embodiment.

[0043] The parts indicated by the numbers in the above drawings are as follows: 1. Upper template; 2. Lower template; 201. Support platform; 202. Moving platform; 203. Matching platform; 3. Sliding seat; 301. Guide block; 4. Matching core column; 401. Conical blanking section; 402. Matching plate; 5. Punching sleeve; 6. Second cylinder; 7. First elastic member; 8. Limiting plug-in block; 9. Lead-in slope; 10. Clamping block; 11. Slider; 12. First adsorption hole; 13. First air channel; 14. First piston rod; 15. First drive plate; 16. First cylinder; 17. Forward and reverse screw rods; 18. Bearing seat; 19. First drive motor; 20. Support roller; 21. Second drive motor; 22. Stamping inner core ; 23. Punch sleeve; 24. First lifting cylinder; 25. Second lifting cylinder; 26. Second adsorption hole; 27. Second drive plate; 28. Second piston rod; 29. ​​Second air duct; 30. Synchronous gear chain; 31. Guide block; 32. Rack; 33. Guide groove; 34. First driven gear; 35. Third driven gear; 36. Second driven gear; 37. Rotating shaft; 38. First drive gear; 39. Second drive gear; 40. Separating ring; 41. Guide rod; 42. First electromagnetic ring; 43. First boss; 44. Second elastic member; 45. Lifting gear disc; 46. Fixed gear disc; 47. Second electromagnetic ring; 48. Second boss; 49. Third elastic member; 50. Introduction tip; 51. Iron ring. DETAILED DESCRIPTION

[0044] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0045] A punching equipment for automobile panels, see Figures 1 to 15 As shown, it includes an upper template 1 with a lifting arrangement, a punch die set on the upper template 1, a lower template 2 located below the upper template 1, and a punching die set on the lower template 2. Figure 6 As shown, the lower template 2 includes a fixed support platform 201 and a movable platform 202 that is flush with the upper end surface of the support platform 201 and can be translated or locked relative to the support platform 201 along the X-axis or Y-axis. The punching module is arranged on the support platform 201. The first adsorption hole 12 that can be switched between normal pressure or negative pressure is provided on the edge of the punching module on the support platform 201, and the switching of the air pressure of the first adsorption hole 12 is controlled by the first air pressure switching component. The second adsorption hole 26 that can be switched between negative pressure and normal pressure is provided on the upper end surface of the movable platform 202, and the switching of the air pressure of the second adsorption hole 26 is controlled by the second air pressure switching component. Elastic rings (not shown) for increasing air tightness are provided around the first adsorption hole 12 and the second adsorption hole 26 on the support platform 201 and the movable platform 202. The movement or locking of the movable platform 202 is controlled by the drive control component.

[0046] Combine Figures 6 to 12 As shown, the drive control component includes a sliding seat 3 and a control switching component. One side of the support platform 201 is recessed downward and formed with a matching platform 203 whose height is lower than the support platform 201. The bottom of the sliding seat 3 is provided with support rollers 20 that are parallel and spaced and contact the matching platform 203. A guide groove 33 is provided on the side wall of the support platform 201 close to the matching platform 203 along the width direction of the support platform 201. One end of the sliding seat 3 is provided with a guide block 301 embedded in the guide groove 33 for guiding sliding. A guide groove perpendicular to the guide groove 33 is horizontally opened on the upper end surface of the sliding seat 3. A guide block 31 that is inserted into the guide groove for guidance is fixed at the bottom of the mobile platform 202. The control switching component includes a guide block 31 fixed at the bottom of the guide groove 33. The rack 32 extends along the guide groove 33, the first driven gear 34 is horizontally rotated and arranged in the sliding seat 3 and meshes with the rack 32 after partially extending out of the guide block 301, and the two second driven gears 36 are horizontally rotated in the sliding seat 3 at intervals. The synchronous gear chain 30 is tensioned and meshed between the two second driven gears 36. The guide block 301 is fixed on the synchronous gear chain 30 and guided to move on the sliding seat 3 with the transmission of the synchronous gear chain 30. A third driven gear 35 is coaxially fixed on the second driven gear 36 close to the first driven gear 34. A switching gear assembly for realizing the movement or locking of the mobile platform 202 relative to the support platform 201 is provided between the third driven gear 35 and the first driven gear 34 in the sliding seat 3.

[0047] Combine Figure 15 As shown, the switching gear assembly includes a first driving gear 38 and a second driving gear 39 distributed up and down and coaxially sleeved on a rotating shaft 37 that passes through the upper and lower end surfaces of the sliding seat 3, a guide frame coaxially fixed on the rotating shaft 37 and used to realize that the first driving gear 38 and the second driving gear 39 rotate synchronously with the rotating shaft 37 while being able to move along the axial direction of the rotating shaft 37, and a second driving motor 21 installed at the bottom of the sliding seat 3 and used to drive the rotating shaft 37 to rotate. A first electromagnetic control assembly and a second electromagnetic control assembly are respectively provided between the upper bottom surface of the sliding seat 3 and the first driving gear 38 and between the lower bottom surface of the sliding seat 3 and the second driving gear 39, which are used to drive the first driving gear 38 or the second driving gear 39 to rise and fall and always rotate synchronously with the rotating shaft 37 during the lifting process. An engagement limiting assembly is provided between the first driving gear 38 and the upper bottom surface of the sliding seat 3 to limit the rotation of the first driving gear 38 when the first driving gear 38 rises to the maximum stroke.

[0048] The guide frame includes a separator ring 40 coaxially fixed to the rotating shaft 37 outside the two ends of the first drive gear 38 and the second drive gear 39 moving opposite to each other to the maximum stroke, and a guide rod 41 fixed between the two separator rings 40 and simultaneously guided and inserted with the first drive gear 38 and the second drive gear 39. There are two guide rods 41 and they are symmetrically distributed on both sides of the rotating shaft 37. The separator ring 40 is made of plastic sheet. The first electromagnetic control component includes a first electromagnetic ring 42 fixed to the upper bottom surface of the sliding seat 3 and rotating with the separator ring 40 near it through a bearing, a first electromagnetic ring 42 protruding from the upper end of the first drive gear 38 and having an end surface A first boss 43 embedded with an iron ring 51 and a second elastic member 44 sleeved on the rotating shaft 37 and elastically abutting the separating ring 40 and the first boss 43 at both ends, the second elastic member 44 is a spring; the second electromagnetic control component includes a second electromagnetic ring 47 fixed to the lower bottom surface of the sliding seat 3 and rotatably engaged with the separating ring 40 close to it through a bearing, a second boss 48 protruding from the lower end of the second driving gear 39 and with the iron ring 51 embedded on the end face, and a third elastic member 49 sleeved on the rotating shaft 37 and elastically abutting the separating ring 40 and the second boss 48 at both ends, the second elastic member 44 is a spring.

[0049] The engagement limiting assembly includes a fixed gear plate 46 coaxial with the rotating shaft 37 and fixed to the upper bottom surface of the sliding seat 3, and a lifting gear plate 45 coaxially fixed to the upper end surface of the first driving gear 38 and meshing with the fixed gear plate 46 when the first driving gear 38 rises to its maximum stroke.

[0050] When the first electromagnetic ring 42 loses power and the second electromagnetic ring 47 is energized, the first drive gear 38 idles and the second drive gear 39 engages with the third driven gear 35; when the first electromagnetic ring 42 and the second electromagnetic ring 47 lose power, the first drive gear 38 engages with the first driven gear 34 and the second drive gear 39 is in an idling state; when the first electromagnetic ring 42 and the second electromagnetic ring 47 are energized at the same time, the lifting gear plate 45 engages with the fixed gear plate 46 and the first drive gear 38 and the second drive gear 39 engage with the first driven gear 34 and the third driven gear 35 respectively.

[0051] See also Figure 3 and Figure 11 As shown, the first air pressure switching component includes a number of mutually parallel first air channels 13 horizontally arranged in the support platform 201, each first air channel 13 is connected to a vertically arranged first adsorption hole 12, and a first piston rod 14 is sealed and moved in each first air channel 13 and the first piston rod 14 is synchronously fixed on the first driving plate 15. A first cylinder 16 is arranged at the bottom or inside of the support platform 201, and the piston rod end of the first cylinder 16 is fixedly connected to the first driving plate 15. As the piston rod of the first cylinder 16 is extended and retracted, the first adsorption hole 12 in sealed contact with the workpiece is switched between normal pressure and negative pressure. In this embodiment, two first cylinders 16 are provided and symmetrically arranged on both sides of the punching die group, each first cylinder 16 controls the extension and retraction of half of the first piston rod 14, and the two first cylinders 16 operate synchronously.

[0052] See also Figure 7 、 Figure 13-14 The second air pressure switching component includes a plurality of second air channels 29 horizontally arranged in the movable platform 202 and parallel to the guide groove 33. Each second air channel 29 is connected to a row of second adsorption holes 26 parallel to the guide groove 33, with 2 to 5 second adsorption holes 26 in each row. A second piston rod 28 is sealed and moved in each second air channel 29. The second piston rod 28 is synchronously connected to the second driving plate 27 located on one side of the movable platform 202. One side of the movable platform 202 extends to the outside of the sliding seat 3 and a second cylinder 6 is fixed on the lower end face. The piston rod of the second cylinder 6 is fixedly connected to the second driving plate 27. The upper end face of the second driving plate 27 is lower than the upper end face of the sliding seat 3. As the piston rod of the second cylinder 6 is extended and retracted, all the second piston rods 28 are moved in the second air channel 29, thereby realizing the switching of the air pressure between normal pressure and negative pressure in all the second adsorption holes 26 that are in sealed contact with the workpiece.

[0053] In order to automatically switch the punching hole diameter, combined with Figures 2 to 4As shown, the punch die set includes a punching core 22 which is lifted and lowered on the upper template 1 and a punching sleeve 23 which is sequentially sleeved outside the punching core 22 and is used to increase the punching diameter. The punching core 22 is vertically guided and set on the upper template 1 and its lifting is controlled by a first lifting cylinder 24. The second lifting cylinder 25 is fixed to the upper end surface of the upper template 1 and its piston rod end is fixedly connected to the upper end of the punching core 22. A first switching mechanism is provided between the upper template 1, the punching sleeve 23 and the punching core 22, which enables the punching core 22 to obtain the remaining punching sleeve 23 and carry the obtained punching sleeve 23 to be lifted and lowered when the upper template 1 limits the required punching sleeve 23 from the outside to the inside. The punch die includes a matching core column 4 which is vertically guided and lifted on the support platform 201 and a punching sleeve 5 which is sequentially sleeved outside the matching core column 4. The matching core column 4 is vertically guided and arranged on the lower die, and its bottom extends to the bottom of the lower die plate 2. A matching plate 402 is vertically fixed to the bottom of the matching core column 4. The lifting and lowering of the matching core column 4 is controlled by two second lifting cylinders 25. The second lifting cylinders 25 are symmetrically distributed on both sides of the matching core column 4 and the cylinder body is fixed to the bottom of the lower die plate 2. The piston rod of the second lifting cylinder 25 is vertically downward and the end is fixedly connected to the matching plate 402. A second switching mechanism identical to the first switching mechanism is arranged between the punching sleeve 5, the support platform 201 and the matching core column 4. When the support platform 201 obtains the required punching sleeve 5, the matching core column 4 obtains the remaining punching sleeve 23 and carries the obtained punching sleeve 23 to synchronously descend until there is a matching distance between it and the support platform 201 for the punching debris to slide out. The diameter of the mating core column 4 is consistent with the stamping inner core 22. The upper end of the mating core column 4 is a conical blanking section 401 with the tip facing upward and convenient for the stamping debris to slide off. When the mating core column 4 obtains the punching sleeve 5, the upper end surface of the punching sleeve 5 is located below the conical blanking section 401.

[0054] Since the first switching mechanism is consistent with the second switching mechanism, the description of the various features of the first switching mechanism is omitted in this embodiment, and the features of the second switching mechanism are described in detail. The second switching mechanism includes a symmetrically recessed receiving groove on the outer wall of the mating core column 4, a limiting plug 8 that can be completely retracted into the receiving groove or partially extended from the receiving groove and whose maximum stroke can be horizontally plugged into all punching sleeves 5, and a first elastic member 7 whose two ends are respectively fixed to the bottom of the receiving groove and the limiting plug 8 and drives the limiting plug 8 to be in a partially extended state under normal conditions. The first elastic member 7 is a spring, and an introduction slope 9 is provided at the upper end of the limiting plug 8 for contraction when it is subjected to external force. The punching sleeve 5 is provided with a Through groove, two clamping blocks 10 that can move toward or away from each other synchronously are provided on the lower template 2, the clamping blocks 10 can move away from all the punch sleeves 23 synchronously or move toward and fit into the outer wall of the mating core column 4 synchronously, and the synchronous approach or distance of the clamping blocks 10 is controlled by a driving member, the driving member includes a forward and reverse screw rod 17 that is horizontally rotated and arranged in the lower template 2, and a first driving motor 19 that drives the forward and reverse screw rod 17 to rotate, the forward and reverse screw rod 17 includes forward and reverse thread segments with opposite thread setting directions and is rotatably arranged in the lower template 2 through two bearing seats 18, and a slider 11 is provided on the forward and reverse thread segments of the forward and reverse screw rod 17, which respectively moves along the axial guide of the forward and reverse screw rod 17, and a clamping block 10 is fixed on each of the two sliders 11.

[0055] The above-mentioned first lifting cylinder 24, second lifting cylinder 25, first drive motor 19, second drive motor 21, first cylinder 16, second cylinder 6, first electromagnetic ring 42, second electromagnetic ring 47 and other components are all controlled by a controller, and the opening, closing and switching of the above-mentioned components are realized by the existing logic programming of the controller.

[0056] The steps are as follows:

[0057] 1. Unloading: A worker or a robotic arm places the sheet material flat on the support platform 201 with one of the punching holes aligned with the core column 4;

[0058] 2. Material suction: The first adsorption hole 12 switches to a negative pressure state or the first adsorption hole 12 and the second adsorption hole 26 switch to a negative pressure state simultaneously, the second drive motor 21 loses power and the first electromagnetic ring 42 and the second electromagnetic ring 47 are simultaneously powered (the mobile platform 202 is in a locked state);

[0059] 3. Switching the punching aperture: The clamping blocks 10 on the upper template 1 and the lower template 2 approach or move away from each other to the required distance according to the actual punching requirements. The punching core 22 and the limiting insert 8 in the matching core column 4 adaptively retract as the clamping blocks 10 approach each other and adaptively extend as the clamping blocks 10 move away from each other. After the clamping block 10 stops, the first lifting cylinder 24 descends to its maximum stroke, and the punching core 22 carries the punching sleeve 23 it limits and synchronously descends to its maximum stroke relative to the upper template 1. The punching core 22 and the punching sleeve 23 it limits synchronously form a punching head; at the same time, the second lifting cylinder 25 descends to its maximum stroke, and the matching core column 4 carries the punching sleeve 5 it limits and descends to its maximum stroke together;

[0060] 4. Punching: The upper template 1 is lowered to the mold closing height to complete the punching. The punched waste slides out from the gap between the punching core 22 and the lower template 2. The upper template 1 rises to open the mold.

[0061] 5. Material transfer: The first adsorption hole 12 is switched to a normal pressure state, and the second adsorption hole 26 is switched to a negative pressure state; the sliding seat 3 is moved to the next punching position of the sheet material, facing the punching hole, as needed (the controller controls the forward and reverse rotation, the number of rotations, and the power on and off timing of the first electromagnetic ring 42 and the second electromagnetic ring 47 according to the pre-input logic programming);

[0062] 6. Suction: Repeat step 2;

[0063] 7. If you want to punch directly, repeat step 4; if you need to adjust the hole diameter, repeat steps 3 and 4;

[0064] 8. Repeat steps 5 to 7 until all punching is completed.

[0065] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automobile panel punching device, comprising an upper template (1) that is arranged to be lifted, a punch die set arranged on the upper template (1), a lower template (2) located below the upper template (1), and a punching die set arranged on the lower template (2), characterized in that: The lower template (2) is divided into a fixed support platform (201) and a movable platform (202) flush with the upper end surface of the support platform (201) and capable of performing X-axis translation or Y-axis translation or locking relative to the support platform (201). The movement or locking of the movable platform (202) is controlled by a drive control component. The drive control component includes a guide groove (33) opened on the side wall of the support platform (201) along the width direction of the support platform (201) and a sliding seat (3) embedded at one end and slidingly guided on the guide groove (33). The movable platform (202) is embedded and slidably moved on the sliding seat (3) and reciprocates in a horizontal direction perpendicular to the sliding direction of the sliding seat (3). A device for realizing The mobile platform (202) is guided to move along the guide groove (33), or the mobile platform (202) is guided to move horizontally along the guide groove (33) perpendicular to the guide groove (33), or the mobile platform (202) is locked relative to the fixed platform. The control switching component includes a rack (32) fixed to the bottom of the guide groove (33) and extending along the guide groove (33), a first driven gear (34) horizontally arranged in the sliding seat (3) and meshed with the rack (32), and two second driven gears (36) horizontally rotated in the sliding seat (3), a synchronous gear chain (30) is tensioned and meshed between the two second driven gears (36), a third driven gear (35) is coaxially fixed on the second driven gear (36) close to the first driven gear (34), and a third driven gear (35) is coaxially fixed on the sliding seat (3). A switching gear assembly for realizing movement or locking of the mobile platform (202) relative to the supporting platform (201) is provided between the third driven gear (35) and the first driven gear (34) in the sliding seat (3). The switching gear assembly comprises a first driving gear (38) and a second driving gear (39) which are distributed up and down and coaxially sleeved on a rotating shaft (37) which passes through the upper and lower end surfaces of the sliding seat (3), a guide frame which is coaxially fixed on the rotating shaft (37) and is used to realize the first driving gear (38) and the second driving gear (39) to rotate synchronously with the rotating shaft (37) and can be guided and moved along the axial direction of the rotating shaft (37), and a second driving motor (21) which is installed on the sliding seat (3) and is used to drive the rotating shaft (37) to rotate. A first electromagnetic control component and a second electromagnetic control component are respectively provided between the upper bottom surface of the sliding seat (3) and the first driving gear (38), and between the lower bottom surface of the sliding seat (3) and the second driving gear (39), for driving the first driving gear (38) or the second driving gear (39) to rise and fall and always rotating synchronously with the rotating shaft (37) during the lifting process. An engagement limiting component is provided between the first driving gear (38) and the upper bottom surface of the sliding seat (3) for limiting the rotation of the first driving gear (38) when the first driving gear (38) rises to the maximum stroke; when the first electromagnetic control component loses power and the second electromagnetic control component is energized, the first driving gear (38) idles and the second driving gear (39) meshes with the third driven gear (35);When the first electromagnetic control component and the second electromagnetic control component lose power at the same time, the first drive gear (38) meshes with the first driven gear (34) and the second drive gear (39) is in an idling state; when the first electromagnetic control component and the second electromagnetic control component are powered at the same time, the engagement limiting component meshes and the first drive gear (38) and the second drive gear (39) mesh with the first driven gear (34) and the third driven gear (35) respectively; the punching die is arranged on the support platform (201), and a device for absorbing the punching die is provided on the edge of the support platform (201). A plurality of first adsorption holes (12) for attaching workpieces, and a plurality of second adsorption holes (26) for adsorbing workpieces are provided on the upper end surface of the mobile platform (202). The first adsorption holes (12) and the second adsorption holes (26) are controlled by a first air pressure switching component and a second air pressure switching component respectively. When the mobile platform (202) moves, the first adsorption holes (12) are in a normal pressure state and the second adsorption holes (26) are in a negative pressure state; when the mobile platform (202) is locked, the first adsorption holes (12) are in a negative pressure state and the second adsorption holes (26) are in a negative pressure or normal pressure state.

2. The automobile panel punching equipment according to claim 1, characterized in that: The guide frame includes a separation ring (40) coaxially fixed on the rotating shaft (37) and located outside the two ends of the first driving gear (38) and the second driving gear (39) moving oppositely to the maximum stroke, and a guide rod (41) fixed between the two separation rings (40) and simultaneously guided and inserted with the first driving gear (38) and the second driving gear (39). The separation ring (40) is made of non-magnetic material. The first electromagnetic control component includes a first electromagnetic ring (42) fixed on the upper bottom surface of the sliding seat (3) and rotatably matched with the separation ring (40) close to it through a bearing, a first boss (43) protruding from the upper end of the first driving gear (38) and with an iron ring (51) embedded in the end face, and a second elastic member (44) sleeved on the rotating shaft (37) and elastically abutting the separation ring (40) and the first boss (43) at both ends. The second electromagnetic control component has the same structure as the first electromagnetic control component.

3. The automobile panel punching equipment according to claim 2, characterized in that: The engagement limiting assembly comprises a fixed toothed disc (46) coaxial with the rotating shaft (37) and fixed to the upper bottom surface of the sliding seat (3), and a lifting toothed disc (45) coaxially fixed to the upper end surface of the first driving gear (38) and meshing with the fixed toothed disc (46) when the first driving gear (38) rises to a maximum stroke.

4. The automobile panel punching equipment according to claim 1, characterized in that: A matching platform (203) is formed on the support platform (201) in a recessed manner on one side of the punching die set, and a supporting roller (20) is rotatably provided at the bottom of the sliding seat (3) to contact the matching platform (203).

5. The automobile panel punching equipment according to claim 1, characterized in that: The first air pressure switching component includes a plurality of first air channels (13) horizontally arranged in the support platform (201), each first air channel (13) is connected to one or more vertically arranged first adsorption holes (12), a first piston rod (14) is sealed and moved in each first air channel (13), and the first piston rod (14) is synchronously fixed on the first driving plate (15), and the movement of the first driving plate (15) is controlled by the extension and contraction of the piston rod of the first cylinder (16).

6. The automobile panel punching equipment according to claim 1, characterized in that: The punch die set comprises a punching inner core (22) which is lifted and arranged on an upper template (1) and a punching sleeve (23) which is sequentially sleeved outside the punching inner core (22) and is used to increase the punching diameter. A first switching mechanism is provided between the upper template (1), the punching sleeve (23) and the punching inner core (22). When the upper template (1) limits the required punching sleeve (23) from the outside to the inside, the punching inner core (22) obtains the remaining punching sleeve (23) and carries the obtained punching sleeve (23) to lift and lower. The punch die set comprises a punching inner core (22) which is lifted and arranged on a support platform (2 01) and a punching sleeve (5) sequentially sleeved outside the matching core column (4); a second switching mechanism identical to the first switching mechanism is provided between the punching sleeve (5), the support platform (201) and the matching core column (4); after the support platform (201) obtains the required punching sleeve (5), the matching core column (4) obtains the remaining punching sleeve (23) and carries the obtained punching sleeve (23) to synchronously descend until there is a matching spacing between the supporting platform (201) and the punching sleeve for the punching debris to slide out.

7. The automobile panel punching equipment according to claim 6, characterized in that: The second switching mechanism comprises a limiting plug (8) which is elastically retractable on the matching core column (4) and can be completely retracted into the matching core column (4) or partially extended to be horizontally plugged with all the punching sleeves (5), a first elastic member (7) which drives the limiting plug (8) to be in an extended state, and an introduction slope (9) which is arranged at the upper end of the limiting plug (8) and contracts when the limiting plug (8) is subjected to external force, a through groove for the limiting plug (8) to be inserted is provided on the punching sleeve (5), and two clamping blocks (10) which can be synchronously moved closer or farther away are provided on the lower template (2). The block (10) can be synchronously moved away from all the punch sleeves (23) or synchronously approached to fit with the outer wall of the matching core column (4). The synchronous approach or distance of the clamping block (10) is controlled by a driving member, which includes a forward and reverse screw rod (17) that is horizontally rotated and arranged in the lower template (2) and a first driving motor (19) that drives the forward and reverse screw rod (17) to rotate. A slider (11) is respectively provided on the forward and reverse thread sections of the forward and reverse screw rod (17) to move along the axial direction of the forward and reverse screw rod (17), and a clamping block (10) is fixed on each of the two sliders (11).

8. The automobile panel punching equipment according to claim 7, characterized in that: The diameter of the mating core column (4) is consistent with that of the punching inner core (22), and the upper end of the mating core column (4) is a conical blanking section (401) with the tip pointing upward and facilitating the sliding of punching debris. When the mating core column (4) obtains the punching sleeve (5), the upper end surface of the punching sleeve (5) is located below the conical blanking section (401).

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