CN117548563A - Photovoltaic inverter box body stretching device and stretching method - Google Patents

Abstract

The invention relates to the field of part production and discloses a photovoltaic inverter box stretching device and a stretching method, wherein the photovoltaic inverter box stretching device comprises a lower die holder, a supporting frame and an upper die holder, the bottom end of the lower die holder is supported by the supporting frame, two side edges of the upper surface of the lower die holder are respectively connected with a bracket, a die cavity is formed in the middle of the upper surface of the lower die holder, hydraulic cylinders are respectively arranged at the two side edges of the upper surface of the bracket, the bottom end of an output shaft of each hydraulic cylinder is connected with a lifting plate, the two side edges of the lower surface of each lifting plate are respectively connected with a first fixed cylinder, the bottom end of each first fixed cylinder is inserted with a vertical rod, the bottom ends of the vertical rods are connected with the upper die holder and the bottom ends of the vertical rods, and a third spring is sleeved on the vertical rods, and can drive punching bars to carry out punching work while starting the hydraulic cylinders to drive the upper die holder to move downwards for stretching so as to shorten the delivery period, reduce the process cost and meet the fierce market competition.

Description

Photovoltaic inverter box body stretching device and stretching method

Technical Field

The invention relates to the technical field of part production, in particular to a stretching device and a stretching method for a photovoltaic inverter box body.

Background

Sheet metal box products occupy a good market in modern industrial products, especially as essential main hardware of new energy inverters and energy storage products in emerging industries, at present, the products are mainly produced by adopting a traditional process (laser or several-punch blanking-bending-welding), and the current process has obvious defects that the current process cannot meet the application of products with high requirements: the existing process has the characteristics of multiple complicated processes, low productivity and efficiency, large quantity of inverters and energy storage products, short delivery cycle, and high cost, and cannot adapt to strong market competition.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a stretching device and a stretching method for a photovoltaic inverter box body.

In a first aspect, the invention provides a photovoltaic inverter box stretching device, which adopts the following technical scheme:

the utility model provides a photovoltaic inverter box stretching device, includes die holder, support frame and upper die base, the bottom of die holder is supported through the support frame, both sides border department above the die holder all is connected with the support, the die cavity has all been seted up to the department in the middle of the above of die holder, the pneumatic cylinder is all installed to the above both sides department of support, the bottom of pneumatic cylinder output shaft is connected with the lifter, the below both sides border department of lifter all is connected with first fixed section of thick bamboo, the montant has been inserted to the bottom of first fixed section of thick bamboo, the bottom of montant is connected on the upper die base, the cover has the third spring on the montant, the bottom of upper die base and montant is connected respectively at the both ends of third spring, punching groove has all been seted up on the both sides face of upper die base, the inside groove has all been seted up to both sides department in the die holder, be provided with the movable plate in the inside groove, be connected with the strip of punching a hole in the intussuseption die cavity on the movable plate, two the middle department that the movable plate kept away from a side each other all is connected with L shape pole, L shape pole is worn out the lower plate and is connected with the guide slot, two guide slots have been seted up to the guide slot, the riser has been worn out on the guide slot, the riser has been seted up.

Preferably, a first groove is formed in the middle of the upper surface of the upper die holder, a collecting box is placed in the first groove, inlets are formed in the positions, corresponding to the punching grooves, of the two sides of the collecting box, a middle strip is connected between the inner walls of the two sides of the collecting box, and a handle is arranged on the middle strip.

Preferably, the below department that collecting box both sides inner wall is in the middle strip all passes has the locating strip, the one end of locating strip inserts and sets up in the locating hole on first recess inner wall, be connected with the telescopic link between the other end of locating strip and the inner wall of collecting box, the cover has first spring on the telescopic link, the both ends of first spring are connected respectively on locating strip and collecting box, the department rotates in the middle of on the middle strip and passes there is the bull stick, the bottom of bull stick is connected with two first fixed strips, two first fixed strips are connected with two locating strips rotation respectively through two curved bars, the department is connected with the fixed section of thick bamboo of second above the middle strip, the bull stick inserts in the fixed section of thick bamboo of second, the jack at bull stick top inserts square rod in, the handle is installed on square rod, be connected with the second spring between the lower inner wall of bottom and bull stick of square rod, set up the constant head tank that supplies the handle to inject on the fixed section of thick bamboo of second.

Preferably, the intercommunication groove of intercommunication inside groove has been seted up to both sides below the die holder, the second recess has been seted up to the below department that is in the die groove in the die holder, be provided with the flitch of intubate in the die groove in the second recess, be connected with the connecting rod of wearing out the die holder below the flitch both sides, two the connecting rod extends to the one end of intercommunication groove below and is connected with the diaphragm, the second guiding groove has been seted up on the diaphragm, be in below the die holder both sides department of diaphragm all is connected with the curb plate, two of every group all seted up first spout on the curb plate, slide in the first spout and be provided with the slider, two pass on the slider and have the horizontal pole, the horizontal pole passes the second guiding groove, be connected with the fourth spring between slider and the one end cell wall of first spout, be close to both ends position department on the horizontal pole and be connected with the U-shaped pole, the lower middle department of the flitch is connected with the second fixed strip, be provided with the pulling on the second fixed strip.

Preferably, the bottom jack of the second fixing strip is inserted with a first inserting strip, the bottom of the first inserting strip is provided with a third groove, a shaft rod is rotated and penetrated through the groove wall of the third groove, the top end of the pulling block is sleeved on the shaft rod, torsion springs are connected between the two sides of the pulling block and the groove wall of the third groove, the inner wall of the third groove is connected with a stop block tightly attached to one side surface of the pulling block, the first inserting strip is penetrated with an inserting rod, one side inner wall of the communicating groove is provided with a third guiding groove, and one end of the first inserting strip is slidably arranged in the third guiding groove.

Preferably, the middle of the front surface of the lower die holder is provided with a mounting groove, a collecting frame is inserted into the mounting groove, and the bottom end of the mounting rod connected with the upper side of the two sides of the collecting frame is inserted into a jack formed in the upper surface of the lower die holder.

Preferably, the cylinder is installed to intermediate position department of die holder trailing flank, the top department of die holder is provided with the U-shaped strip, the one end of cylinder output shaft is connected in the middle part on the U-shaped strip, the both ends department of U-shaped strip all is provided with the movable strip, the gliding second spout of confession movable strip has been seted up to the top of die holder, the top department of movable strip is provided with the kicking block, it inserts the strip to have inserted in the jack on the kicking block, the one end that the kicking block was worn out to the second inserts the strip is connected with the holding strip.

Preferably, the lifting bar inserted into the movable bar is connected below the top block, the end part of the U-shaped bar passes through the movable bar, the bottom end of the lifting bar is provided with a roller, a fifth spring is connected between the lifting bar and the upper inner wall of the movable bar, a rectangular plate is connected above one side of the movable bar, a fourth guide groove is formed in the rectangular plate, a driving frame is connected on the second insertion bar, the driving frame passes through the fourth guide groove, a pushing bar is connected above the U-shaped bar near the end part of the U-shaped bar, and one end of the pushing bar is an inclined surface.

Preferably, the two ends of the U-shaped strip are connected with first protruding blocks, and the side surface of the U-shaped strip is connected with second protruding blocks at positions close to the moving strip.

In a second aspect, the present application provides a photovoltaic inverter box stretching method, which adopts the following technical scheme:

a stretching method of a photovoltaic inverter box body comprises the following steps:

step one: firstly, placing a box body to be stretched into a die cavity, and starting a hydraulic cylinder to drive a lifting plate and an upper die holder to integrally move downwards towards the die cavity to stretch the box body;

step two: the upper die holder extrudes the third spring to compress and stretch the box body, and the lifting plate drives the driving rod to slide in the first guide groove on the vertical plate, so that the punching bar on the moving plate can be driven to punch while stretching;

step three: after the stretching is finished, the hydraulic cylinder drives the upper die holder and the moving plate to reset, and the moving plate drives the pulling block to push the U-shaped rod to move in the resetting process, so as to drive the pushing plate to move upwards and push out the stretched box body from the die cavity;

step four, a step four is carried out; the actuating cylinder drives the U-shaped strip to move, the pushing strip on the U-shaped strip pushes the lifting strip and the top block to move upwards integrally, and the clamping strip completely moves out of the die cavity when clamping the box body;

step five: finally, the air cylinder continuously drives the U-shaped strip to move, the moving strip is pushed to move through the second convex block, after the clamped box body is brought into the collecting frame, the air cylinder drives the U-shaped strip to move reversely, so that the box body is loosened, and the box body is placed into the collecting frame to be automatically collected.

In summary, the invention has the following beneficial technical effects:

1. according to the invention, the lifting plate at the bottom end of the output shaft of the hydraulic cylinder on the support is provided with the first fixed cylinder, the vertical rod, the third spring and the upper die holder, the lifting plate drives the rod to pass through the first guide groove on the vertical plate, the bottom end of the vertical plate is connected with the movable plate provided with the punching strip in the inner groove through the L-shaped rod, the upper die holder is provided with the punching groove, and the hydraulic cylinder is started to drive the upper die holder to move downwards for stretching, and meanwhile, the punching strip can be driven to carry out punching work, so that the delivery period is shortened, the process cost is reduced, and the fierce market competition is met;

2. according to the invention, the collecting box is arranged in the first groove of the upper die holder, the collecting box is provided with the inlet communicated with the punching groove, and generated scraps can be directly collected into the collecting box while punching, so that the collecting box is convenient to take out and process intensively;

3. according to the invention, the material pushing plate and the connecting strip are arranged in the second groove of the lower die holder, the bottom end of the U-shaped rod arranged in the communicating groove is connected with the cross rod passing through the second guide groove on the cross plate at one end of the connecting strip, the sliding blocks at two ends of the cross rod are arranged in the first groove on the side plate in a sliding manner, the second fixing strip and the pulling block are arranged on the moving plate, the lifting plate is driven to move upwards by the air cylinder, when the upper die holder and the moving plate are driven to reversely move and reset, the cross rod is driven to slide in the second guide groove by pushing the U-shaped rod by the pulling block, the material pushing plate can be driven to move upwards in the die groove to automatically push out the stretched box, and the stretched box is convenient to take out;

4. according to the invention, the first insertion strip and the insertion rod are arranged at the bottom end of the second fixing strip, one end of the insertion rod is slidably arranged in the third guide groove, the pulling block is sleeved on the shaft rod at the bottom end of the first insertion strip, a torsion spring is connected between the pulling block and the wall of the third groove, a stop block for limiting the pulling block is arranged in the third groove, when the upper die holder is driven to move downwards by the air cylinder, the pulling block can be smoothly driven to move to one side of the U-shaped rod close to the die cavity by utilizing the rotation of the pulling block on the shaft rod, when the upper die holder is driven to move upwards by the air cylinder, the U-shaped rod can be smoothly pushed by the shielding effect of the stop block to push out the box body, and the stop block can be slid in the third guide groove by utilizing one end of the insertion rod, so that after the pushing plate moves upwards, the pulling block is gradually moved away from the U-shaped rod, and then the pushing plate is reset by utilizing the elasticity of the fourth spring connected with the sliding block, and the next box body can be smoothly produced;

5. the lower die holder is provided with the air cylinder, the U-shaped strip, the movable strip, the lifting strip, the top block, the second inserting strip and the clamping strip, the driving frame connected to the second inserting strip passes through the fourth guide groove on the rectangular plate, the first protruding block, the second protruding block and the pushing strip are arranged at the end part of the U-shaped strip, and when the air cylinder is started, the box body can be automatically clamped and removed from the die groove and sent to the collecting frame for storage, so that the automatic blanking function is realized, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention;

FIG. 2 is an enlarged view of the structure at A of FIG. 1 in an embodiment of the invention;

FIG. 3 is a schematic view of the internal structure of a lower die holder according to an embodiment of the present invention;

FIG. 4 is an enlarged view of the structure at B of FIG. 3 in an embodiment of the present invention;

FIG. 5 is a schematic view showing the structure of a second fixing strip according to an embodiment of the present invention;

FIG. 6 is an enlarged view of the structure at C of FIG. 5 in an embodiment of the invention;

FIG. 7 is a schematic view of the internal structure of the upper die holder according to an embodiment of the present invention;

FIG. 8 is an enlarged view of the structure at D of FIG. 7 in an embodiment of the invention;

FIG. 9 is a schematic view showing the internal structure of a second fixing cylinder according to the embodiment of the present invention;

fig. 10 is an enlarged view of the structure at F of fig. 9 in an embodiment of the present invention.

Reference numerals illustrate: 1. a lower die holder; 2. a support frame; 3. a bracket; 4. a hydraulic cylinder; 5. a lifting plate; 6. an upper die holder; 7. a die cavity; 8. a drive rod; 9. a vertical groove; 10. a first guide groove; 11. a riser; 12. an L-shaped rod; 13. an inner tank; 14. a moving plate; 15. punching a strip; 16. punching a hole; 17. a first groove; 18. a collection box; 19. an inlet; 20. an intermediate strip; 21. a handle; 22. a rotating rod; 23. a first fixing strip; 24. a curved bar; 25. a positioning strip; 26. a telescopic rod; 27. a first spring; 28. a second fixed cylinder; 29. a second spring; 30. square bar; 31. a positioning groove; 32. a first fixed cylinder; 33. a vertical rod; 34. a third spring; 35. a communication groove; 36. pulling the block; 37. a U-shaped rod; 38. a cross plate; 39. a connecting strip; 40. a second groove; 41. a pushing plate; 42. a side plate; 43. a first chute; 44. a slide block; 45. a fourth spring; 46. a second guide groove; 47. a cross bar; 48. a second fixing strip; 49. a third groove; 50. a shaft lever; 51. a stop block; 52. a rod; 53. a first insertion strip; 54. a third guide groove; 55. a mounting groove; 56. a collection frame; 57. a mounting rod; 58. a cylinder; 59. a U-shaped strip; 60. moving the bar; 61. a second chute; 62. clamping strips; 63. a top block; 64. a second insertion strip; 65. lifting bars; 66. a fifth spring; 67. a roller; 68. driving the frame; 69. a rectangular plate; 70. a fourth guide groove; 71. pushing the strip; 72. a first bump; 73. and a second bump.

Detailed Description

The present invention is described in further detail below with reference to fig. 1-10.

The embodiment of the invention discloses a photovoltaic inverter box stretching device.

Referring to fig. 1, 3 and 4, a photovoltaic inverter box stretching device comprises a lower die holder 1, a support frame 2 and an upper die holder 6, wherein the bottom end of the lower die holder 1 is supported by the support frame 2, two side edges of the upper surface of the lower die holder 1 are respectively connected with a support frame 3, a die cavity 7 is formed in the middle of the upper surface of the lower die holder 1, two side edges of the upper surface of the support frame 3 are respectively provided with a hydraulic cylinder 4, the bottom end of an output shaft of the hydraulic cylinder 4 is connected with a lifting plate 5, two side edges of the lower surface of the lifting plate 5 are respectively connected with a first fixed cylinder 32, a vertical rod 33 is movably inserted into the bottom end of the first fixed cylinder 32, the bottom end of the vertical rod 33 is connected with the upper die holder 6, a third spring 34 is sleeved on the vertical rod 33, two ends of the third spring 34 are respectively connected with the bottom ends of the upper die holder 6 and the vertical rod 33, two side surfaces of the upper die holder 6 are respectively provided with punching grooves 16, two side edges in the lower die holder 1 are respectively provided with an inner groove 13, the inner groove 13 is provided with a movable plate 14, the movable plate 14 is connected with punching bars 15 movably inserted into the die cavity 7, the middle of the two movable plates 14 away from one side face is connected with an L-shaped rod 12, one end of the L-shaped rod 12 penetrating out of the lower die holder 1 is connected with a vertical plate 11, the vertical plate 11 is provided with a first guide groove 10, the middle of the two side faces of the lifting plate 5 is connected with a driving rod 8, the driving rod 8 penetrates through the first guide groove 10, the bracket 3 is provided with a vertical groove 9 for the driving rod 8 to penetrate out, when the hydraulic cylinder 4 is started to drive the upper die holder 6 below the lifting plate 5 to move downwards into the die cavity 7, the hydraulic cylinder 4 continuously drives the lifting plate 5 to move downwards to compress a third spring 34 so as to stretch the box, the elastic force generated by the third spring 34 can play a role of buffering in the stretching process, the problem of damaging the box caused by overlarge stretching force is avoided, along with the continuous downward movement of the lifting plate 5, the driving rod 8 is driven to slide in the first guide groove 10 on the vertical plate 11, the vertical plate 11 is pulled to move towards one side close to the support 3, and then the L-shaped rod 12 drives the punching strip 15 on the moving plate 14 to carry out punching work, so that the working efficiency is greatly improved, and the delivery period is shortened.

Referring to fig. 7-8, a first groove 17 is formed in the middle of the upper surface of the upper die holder 6, a collecting box 18 is placed in the first groove 17, inlets 19 are formed at positions, corresponding to the punching grooves 16, of two sides of the collecting box 18, a middle strip 20 is connected between inner walls of two sides of the collecting box 18, a handle 21 is arranged on the middle strip 20, and when punching, the punching strip 15 can directly push generated scraps into the collecting box 18, so that centralized processing is facilitated;

the inner walls of the two sides of the collecting box 18 are movably penetrated by a locating strip 25 at the lower part of a middle strip 20, one end of the locating strip 25 is inserted into a locating hole formed in the inner wall of a first groove 17, a square rod 30 is inserted into an inserting hole formed in the top end of the locating strip 25, a first spring 27 is sleeved on the square rod 26, two ends of the first spring 27 are respectively connected to the locating strip 25 and the collecting box 18, a rotating rod 22 is rotatably penetrated through the middle part of the middle strip 20, two first fixing strips 23 are connected with the bottom end of the rotating rod 22 in a connecting mode, two first fixing strips 23 are rotatably connected with the two locating strips 25 through two curved rods 24 respectively, a second fixing cylinder 28 is connected to the middle part of the upper surface of the middle strip 20, the rotating rod 22 is inserted into the second fixing cylinder 28, a square rod 30 is inserted into an inserting hole formed in the top end of the rotating rod 22, a second spring 29 is connected between the bottom end of the square rod 30 and the lower inner wall of the rotating rod 22, a locating groove 31 for inserting the handle 21 into the square rod 30 is formed in the second fixing cylinder 28, the bottom end of the square rod 30 is rotatably inserted into the collecting box 18, and the groove 17 can be rotatably fixed in the groove 17 through the groove 17.

Referring to fig. 1, 3, 4, 5 and 6, communicating grooves 35 communicating with the inner groove 13 are formed on two sides of the lower surface of the lower die holder 1, a second groove 40 is formed in the lower surface of the lower die holder 1 below the die groove 7, a pushing plate 41 movably inserted into the die groove 7 is arranged in the second groove 40, connecting strips 39 movably penetrating out of the lower die holder 1 are connected on two sides of the lower surface of the pushing plate 41, a transverse plate 38 is connected to one end of each connecting strip 39 extending below the communicating groove 35, a second guiding groove 46 is formed on the transverse plate 38, side plates 42 are connected to two sides of the lower surface of the lower die holder 1 below the transverse plate 38, a first sliding groove 43 is formed on each group of two side plates 42, a sliding block 44 is arranged in the first sliding groove 43 in a sliding manner, a cross rod 47 is fixedly arranged on the two sliding blocks 44 and penetrates through the second guide groove 46, a fourth spring 45 is connected between the sliding blocks 44 and one end groove wall of the first sliding groove 43, a U-shaped rod 37 is connected to the position, close to two ends, of the cross rod 47, the U-shaped rod 37 is wound out of the communication groove 35, a second fixing strip 48 is connected to the middle of the lower surface of the pushing plate 41, a pulling block 36 is arranged on the second fixing strip 48, when the moving plate 14 moves and resets, the pulling block 36 is driven to move, the pulling block 36 pushes the cross rod 47 at the bottom end of the U-shaped rod 37 to slide in the second guide groove 46, and the cross plate 38, the connecting strip 39 and the pushing plate 41 are pushed to move upwards integrally, so that the stretched box body is automatically pushed out of the die groove 7;

the bottom end jack of the second fixing strip 48 is movably inserted with the first inserting strip 53, the bottom end of the first inserting strip 53 is provided with the third groove 49, the groove wall of the third groove 49 is rotated to pass through the shaft rod 50, the top end of the pulling block 36 is fixedly sleeved on the shaft rod 50, a torsion spring is connected between two sides of the pulling block 36 and the groove wall of the third groove 49, the upper inner wall of the third groove 49 is connected with a stop block 51 attached to one side surface of the pulling block 36, the first inserting strip 53 is fixedly provided with the inserting rod 52 in a penetrating manner, one side inner wall of the communicating groove 35 is provided with the third guiding groove 54, one end of the first inserting strip 53 is slidably arranged in the third guiding groove 54, when the moving plate 14 moves towards one side close to the die groove 7 for punching, the pulling block 36 can smoothly move to one side of the U-shaped rod 37 close to the die groove 7 by utilizing the rotation of the pulling block 36, when the moving plate 14 moves reversely, the pulling block 36 can smoothly push the U-shaped rod 37, in addition, in the pushing process of pushing the sliding block 36 can smoothly slide in the third guiding groove 54, the sliding block 36 can smoothly move on the die groove 37 by utilizing the spring, and the elastic force of the fourth material can be pushed out of the die box 37, and the elastic force can be pushed out of the die body 45 smoothly.

Referring to fig. 1 and 2, a mounting groove 55 is formed in the middle of the front surface of the lower die holder 1, a collecting frame 56 is inserted into the mounting groove 55, the bottom ends of mounting rods 57 connected to the upper sides of the collecting frame 56 are inserted into insertion holes formed in the upper surface of the lower die holder 1, and the collecting frame 56 can be used for collecting the stretched box body;

the middle position of the rear side of the lower die holder 1 is provided with a cylinder 58, the upper surface of the lower die holder 1 is provided with a U-shaped strip 59, one end of an output shaft of the cylinder 58 is connected to the middle position on the U-shaped strip 59, two ends of the U-shaped strip 59 are both provided with a movable strip 60, the upper surface of the lower die holder 1 is provided with a second sliding chute 61 for sliding the movable strip 60, the upper surface of the movable strip 60 is provided with a top block 63, a second inserting strip 64 is inserted into an inserting hole on the top block 63, one end of the second inserting strip 64 which movably penetrates through the top block 63 is connected with a clamping strip 62, the lower surface of the top block 63 is connected with a lifting strip 65 which is inserted into the movable strip 60, the end part of the U-shaped strip 59 penetrates through the movable strip 60, the bottom end of the lifting strip 65 is provided with a roller 67, a fifth spring 66 is connected between the lifting strip 65 and the upper inner wall of the movable strip 60, the upper surface of the movable strip 60 is connected with a rectangular plate 69, the upper surface of the rectangular plate 69 is provided with a fourth guiding groove 70, the second inserting strip 64 is connected with a driving frame 68, the driving frame 68 movably passes through a fourth guiding groove 70, a pushing strip 71 is connected to the upper part of the U-shaped strip 59 near the end part of the U-shaped strip 59, one end of the upper part of the pushing strip 71 is an inclined surface, both ends of the U-shaped strip 59 are connected with a first bump 72, the side surface of the U-shaped strip 59 is connected with a second bump 73 near the moving strip 60, after the box body is pushed out, the cylinder 58 can be started to drive the U-shaped strip 59 to move towards the side near the collecting frame 56, the U-shaped strip 59 moves in the moving strip 60, the pushing strip 71 can be used for pushing the top block 63 to drive the driving frame 68 to move upwards in the third guiding groove 54, so that the clamping strip 62 continues to move upwards after being clamped on the box body, the box body is completely driven in the mould feeding groove 7, at the moment, the second bump 73 on the U-shaped strip 59 continues to move, the moving strip 60 is pushed by the second bump 73 on the U-shaped strip 59 to slide in the second sliding groove 61, the clamped box body is pushed into the collecting frame 56, then the air cylinder 58 drives the U-shaped strip 59 to move reversely, the pushing strip 71 is moved out from the lower part of the roller 67, the clamping strip 62 is pulled to move downwards and loosen the box body under the tensile force of the fifth spring 66, the box body is automatically placed into the collecting frame 56, and the moving strip 60 is driven to reset by pushing of the first protruding block 72.

The embodiment of the invention also discloses a photovoltaic inverter box body stretching method, which comprises the following steps:

step one: firstly, placing a box body to be stretched into a die cavity 7, starting a hydraulic cylinder 4 to drive a lifting plate 5 and an upper die holder 6 to move downwards towards the die cavity 7 integrally so as to stretch the box body;

step two: the upper die holder 6 extrudes the third spring 34 to compress and stretch the box body, and the lifting plate 5 is utilized to drive the driving rod 8 to slide in the first guide groove 10 on the vertical plate 11, so that the punching bar 15 on the moving plate 14 can be driven to punch while stretching;

step three: after the stretching is finished, the hydraulic cylinder 4 drives the upper die holder 6 and the movable plate 14 to reset, and the movable plate 14 drives the pulling block 36 to push the U-shaped rod 37 to move in the resetting process, so as to drive the pushing plate 41 to move upwards, and the stretched box body is pushed out of the die cavity 7;

step four, a step four is carried out; the actuating cylinder 58 drives the U-shaped strip 59 to move, and the pushing strip 71 on the U-shaped strip 59 pushes the lifting strip 65 and the top block 63 to move upwards integrally, so that the clamping strip 62 completely moves out of the die cavity 7 when clamping the box body;

step five: finally, the air cylinder 58 continuously drives the U-shaped strip 59 to move, the moving strip 60 is driven to move through the second protruding block 73, after the clamped box body is brought into the collecting frame 56, the air cylinder 58 drives the U-shaped strip 59 to move reversely, so that the box body is loosened, placed into the collecting frame 56 and automatically collected.

The embodiment of the invention relates to a stretching device and a stretching method for a photovoltaic inverter box body, wherein the implementation principle is as follows: firstly, the hydraulic cylinder 4 is started to drive the lifting plate 5 and the upper die holder 6 to move downwards integrally, when the upper die holder 6 moves downwards to the box body, the lifting plate 5 continues to move downwards to stretch the box body in the die cavity 7, the driving rod 8 is driven to slide in the first guide groove 10 on the vertical plate 11, the vertical plate 11 is pulled to move towards one side close to the bracket 3, the L-shaped rod 12 is used for pushing the punching strip 15 on the moving plate 14 to punch the box body, meanwhile, the pulling block 36 is driven to move to the U-shaped rod 37 by utilizing the rotation of the pulling block 36 on the shaft lever 50, the fragments generated after the punching are collected in the collecting box 18, then the hydraulic cylinder 4 is used for driving the upper die holder 6 to move upwards, the moving plate 14 moves reversely in the inner groove 13, the pulling block 36 is driven by the U-shaped rod 37 to drive the cross rod 47 to slide in the second guide groove 46 on the transverse plate 38 under the shielding of the stop block 51, pushing the pushing plate 41 upwards to push the box body out of the die cavity 7, at the moment, starting the air cylinder 58 to drive the U-shaped strip 59 to move, pushing the lifting strip 71 on the U-shaped strip 59 to push the roller 67 upwards, utilizing the sliding of the driving frame 68 in the fourth guide groove 70 on the rectangular plate 69 to enable the box body to be completely taken out of the die cavity 7 when the clamping strip 62 is clamped onto the box body, pushing the clamped box body to the collecting frame 56 through the second lug 73 along with the continuous movement of the U-shaped strip 59, then driving the U-shaped strip 59 to reversely move by the air cylinder 58, moving the pushing strip 71 out of the lower part of the roller 67, utilizing the fifth spring 66 to pull the lifting strip 65 downwards to loosen the clamping strip 62, automatically placing the box body into the collecting frame 56 to realize automatic downward movement, and continuously moving the U-shaped strip 59, driving the moving strip 60 to reset through the first lug 72, finally, the pull block 36 is driven to be separated from the U-shaped rod 37 by sliding the inserted rod 52 in the third guide groove 54, and the pushing plate 41 is driven to move downwards to reset by matching with the elasticity of the fourth spring 45.

The above embodiments are not intended to limit the scope of the present invention, so: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.

Claims (10)

1. The utility model provides a photovoltaic inverter box stretching device, includes die holder (1), support frame (2) and upper die base (6), its characterized in that: the bottom of die holder (1) is supported through support frame (2), die cavity (7) have all been seted up to die holder (1) upper surface both sides border department, die cavity (7) have been seted up to die holder (1) upper surface middle department, pneumatic cylinder (4) have all been installed in the upper surface both sides department of support (3), the bottom of pneumatic cylinder (4) output shaft is connected with lifter plate (5), lifter plate (5) lower surface both sides border department all is connected with first fixed cylinder (32), the bottom of first fixed cylinder (32) is inserted and is had montant (33), the bottom of montant (33) is connected on die holder (6), the cover has third spring (34) on montant (33), the bottom of upper die holder (6) and montant (33) are connected respectively at the both ends of third spring (34), inner groove (16) have all been seted up on the both sides face of upper die holder (6), both sides department in die holder (1) has all been seted up (13), the bottom of lifter plate (13) are provided with first fixed cylinder (32) in the lower surface both sides border department, the bottom of montant (33) has a montant (14) to be provided with in the movable plate (14), two side face (14) are kept away from each other in the die cavity (14) and are connected with one side face (14), the L-shaped rod (12) penetrates out of one end of the lower die holder (1) and is connected with a vertical plate (11), a first guide groove (10) is formed in the vertical plate (11), driving rods (8) are connected to the middle of two side faces of the lifting plate (5), the driving rods (8) penetrate through the first guide groove (10), and vertical grooves (9) for the driving rods (8) to penetrate out are formed in the support (3).

2. The photovoltaic inverter case stretching apparatus according to claim 1, wherein: the upper die holder is characterized in that a first groove (17) is formed in the middle of the upper surface of the upper die holder (6), a collecting box (18) is arranged in the first groove (17), inlets (19) are formed in the positions, corresponding to the punching grooves (16), of the two sides of the collecting box (18), a middle strip (20) is connected between the inner walls of the two sides of the collecting box (18), and a handle (21) is arranged on the middle strip (20).

3. The photovoltaic inverter case stretching apparatus according to claim 2, wherein: the utility model discloses a handle, including collecting box (18), including box (18), middle strip (20), locating strip (25) are all passed in the below department that is in middle strip (20), the one end of locating strip (25) is inserted and is offered in the locating hole on first recess (17) inner wall, be connected with telescopic link (26) between the other end of locating strip (25) and the inner wall of collecting box (18), the cover has first spring (27) on telescopic link (26), the both ends of first spring (27) are connected respectively on locating strip (25) and collecting box (18), middle department rotation has bull stick (22) on middle strip (20), the bottom of bull stick (22) is connected with two first fixed strips (23), two first fixed strips (23) are connected with two locating strips (25) rotation respectively through two curved bars (24), middle department is connected with second fixed cylinder (28) above middle strip (20), bull stick (22) are inserted in second fixed cylinder (28), the top of inserting in second fixed cylinder (22), the jack (30) are installed in the bottom of bull stick (22) between handle (30), the second fixed cylinder (28) is provided with a positioning groove (31) for inserting the handle (21).

4. The photovoltaic inverter case stretching apparatus according to claim 1, wherein: the utility model discloses a U-shaped groove forming device, including die holder (1), connecting groove (35) of intercommunication inside groove (13) are seted up to both sides below die holder (1), second recess (40) have been seted up to the below department that is in die groove (7) in die holder (1), be provided with in second recess (40) and inject push away flitch (41) in die groove (7), push away flitch (41) below both sides are connected with connecting strip (39) of wearing out die holder (1), two connecting strip (39) extend to one end below connecting groove (35) and are connected with diaphragm (38), second guiding groove (46) have been seted up on diaphragm (38), be connected with curb plate (42) below die holder (1) in the both sides department of diaphragm (38), all set up first spout (43) have been seted up on curb plate (42), slide in first spout (43) is provided with slider (44), two cross bar (47) are worn to cross bar (47) on slider (47), one end that connecting strip (39) extends to the below connecting groove (35), second guiding groove (38) has a U-shaped groove (37) to be close to one end connecting groove (37), the middle of the lower surface of the pushing plate (41) is connected with a second fixing strip (48), and a pulling block (36) is arranged on the second fixing strip (48).

5. The photovoltaic inverter case stretching apparatus according to claim 4, wherein: the novel anti-theft device is characterized in that a first insertion strip (53) is inserted into a bottom end insertion hole of the second fixing strip (48), a third groove (49) is formed in the bottom end of the first insertion strip (53), a shaft rod (50) is arranged on the groove wall of the third groove (49) in a rotating mode, the top end of the pulling block (36) is sleeved on the shaft rod (50), a torsion spring is connected between two sides of the pulling block (36) and the groove wall of the third groove (49), a stop block (51) tightly attached to one side face of the pulling block (36) is connected to the upper inner wall of the third groove (49), an insertion rod (52) penetrates through the first insertion strip (53), a third guide groove (54) is formed in one side inner wall of the communication groove (35), and one end of the first insertion strip (53) is slidably arranged in the third guide groove (54).

6. The photovoltaic inverter case stretching apparatus according to claim 1, wherein: the front middle of the lower die holder (1) is provided with a mounting groove (55), a collecting frame (56) is inserted into the mounting groove (55), and the bottom ends of mounting rods (57) connected to the upper parts of two side surfaces of the collecting frame (56) are inserted into insertion holes formed in the lower die holder (1).

7. The photovoltaic inverter case stretching apparatus according to claim 6, wherein: the middle position department of die holder (1) trailing flank installs cylinder (58), the top department of die holder (1) is provided with U-shaped strip (59), the one end of cylinder (58) output shaft is connected in the middle of on U-shaped strip (59), the both ends department of U-shaped strip (59) all is provided with movable strip (60), the top of die holder (1) has been seted up and has been supplied movable strip (60) gliding second spout (61), the top department of movable strip (60) is provided with kicking block (63), it inserts strip (64) to insert in the jack on kicking block (63), the one end that second inserted strip (64) worn out kicking block (63) is connected with clamp strip (62).

8. The photovoltaic inverter case stretching apparatus according to claim 7, wherein: lifting strip (65) in jack block (63) are connected with below in inserting movable strip (60), movable strip (60) are passed to the tip of U-shaped strip (59), gyro wheel (67) are installed to the bottom of lifting strip (65), be connected with fifth spring (66) between the upper inner wall of lifting strip (65) and movable strip (60), the top department of movable strip (60) side is connected with rectangular plate (69), fourth guiding groove (70) have been seted up on rectangular plate (69), be connected with on second inserting strip (64) and drive frame (68), drive frame (68) pass fourth guiding groove (70), be close to its tip department above U-shaped strip (59) and be connected with pushing strip (71), one end department is the inclined plane above pushing strip (71).

9. The photovoltaic inverter case stretching apparatus according to claim 8, wherein: the two ends of the U-shaped strip (59) are connected with first protruding blocks (72), and the side surface of the U-shaped strip (59) is connected with second protruding blocks (73) at positions close to the moving strip (60).

10. The method for stretching a photovoltaic inverter case according to claim 1, wherein: the method comprises the following steps:

step one: firstly, placing a box body to be stretched into a die cavity (7), and starting a hydraulic cylinder (4) to drive a lifting plate (5) and an upper die holder (6) to integrally move downwards towards the die cavity (7) to stretch the box body;

step two: the upper die holder (6) extrudes the third spring (34) to compress and stretch the box body, and the lifting plate (5) is utilized to drive the driving rod (8) to slide in the first guide groove (10) on the vertical plate (11), so that the punching bar (15) on the moving plate (14) can be driven to punch while stretching;

step three: after the stretching is finished, the hydraulic cylinder (4) drives the upper die holder (6) and the moving plate (14) to reset, and the moving plate (14) drives the pulling block (36) to push the U-shaped rod (37) to move in the resetting process, so as to drive the pushing plate (41) to move upwards and push out the stretched box body from the die cavity (7);

step four, a step four is carried out; the actuating cylinder (58) drives the U-shaped strip (59) to move, the pushing strip (71) on the U-shaped strip (59) pushes the lifting strip (65) and the top block (63) to move upwards integrally, and the clamping strip (62) completely moves out of the die cavity (7) when clamping the box body;

step five: finally, the air cylinder (58) continuously drives the U-shaped strip (59) to move, the moving strip (60) is pushed to move through the second protruding block (73), after the clamped box body is brought into the collecting frame (56), the air cylinder (58) drives the U-shaped strip (59) to move reversely, so that the box body is loosened, and the box body is placed into the collecting frame (56) to be automatically collected.