A meter box plate folding device

Abstract

The utility model discloses an electric meter box plate folding device belongs to electric meter box production technical field, through setting up clamping mechanism and buffer mechanism, when needing to process the plate, first, the plate is fixed and placed on the base, through starting the pressure machine, makes the pressure machine through the installation cavity and drives the inlaying portion to drop, and the inlaying portion drives the bending cutter and the plate surface to contact slightly through the female fixture and the male fixture, at this moment, the spring rod is in the natural state and does not deform, along with the continuous pressing of the bending cutter, the plate starts to deform and produces the reaction force, at this moment, the bending cutter promotes the female fixture and the male fixture to go up, and the female fixture promotes the inlaying portion to slide in the installation cavity, and the jackscrew passes through the through hole and is tightly contacted with the abutting portion, and the jackscrew promotes the movable rod through the abutting portion and extrudes the spring with the cooperation of the guide rod, and the spring absorbs part of the impact force through the elastic deformation, and converts rigid extrusion into progressive flexible pressure.

Description

Technical Field

[0001] This invention relates to the field of meter box manufacturing technology, and in particular to a meter box sheet metal bending device. Background Technology

[0002] A bending machine is a mechanical device used for processing metal sheets. Its core function is to apply pressure to the sheet through a mechanical or hydraulic system, causing it to undergo plastic deformation along a preset straight line or curve, thereby forming a bend at a specific angle.

[0003] The device mainly consists of a folding box, an electric telescopic rod, and an extrusion plate. The meter box material to be folded is placed on the folding box, and the material is initially positioned by the positioning plate and limit rollers. The electric telescopic rod is started, which drives the extrusion plate to move downward and extrude the material. During the extrusion process, the spring at the bottom of the folding box plays a buffering role to prevent the material from being damaged due to hard deformation. The bottom of the extrusion plate corresponds to the groove of the folding box to ensure that the material can be accurately shaped during the extrusion process.

[0004] Existing meter box plates mostly use fiber-reinforced polyester materials to replace traditional metal materials. Compared with traditional carbon steel, stainless steel and aluminum plates, fiber-reinforced polyester materials are more prone to cracking or whitening due to instantaneous high pressure during processing. Therefore, the folding device must avoid material deterioration caused by hard deformation during the extrusion process.

[0005] However, in actual use, the thickness of different areas on the meter box plate is not the same. For example, the thickness is increased in areas with raised reinforcing ribs and sealing areas to improve rigidity, while the thickness is reduced in heat dissipation areas. Therefore, there is a thickness difference on the plate surface. When the plate thickness increases, if the same amount of deformation is required, a spring with higher rigidity needs to be replaced. The buffer of the existing plate bending machine is only achieved by the spring in the folding box. Although it can play a certain role in avoiding hard deformation, it cannot quickly replace the spring in the folding box to adapt to plates of different thicknesses. Summary of the Invention

[0006] The purpose of this invention is to address the problem that the thickness of different areas on the sheet metal of an electric meter box varies, and the existing sheet metal bending machines rely solely on springs within the folding box for cushioning, which cannot be quickly replaced to accommodate sheet metal of different thicknesses. Therefore, this invention proposes a sheet metal bending device for electric meter boxes.

[0007] To achieve the above objectives, the present invention employs the following technology: a plate bending device for an electric meter box.

[0008] The device includes a bending machine body, which includes a press and a base for placing the plate material installed below the press. A bending blade matching the base is installed on the press via a clamping mechanism. The clamping mechanism includes an installation cavity installed on the press, and a fitting part is movably nested in the installation cavity. A female clamp is installed at the bottom of the fitting part, and the female clamp cooperates with the female clamp to clamp and fix the bending blade.

[0009] A buffer mechanism is installed on the fitting part. The buffer mechanism includes two lower chambers symmetrically opened on the fitting part. A mounting cylinder is rotatably arranged in each lower chamber. A number of mounting holes are opened around the mounting cylinder, and spring rods of different stiffness are installed in them respectively. The different stiffness spring rods can be switched by rotating the mounting cylinder.

[0010] Additionally, a push rod installed inside the mounting cavity is coaxial with a through hole at the top of the fitting part and a spring rod located below the through hole. When the bending knife presses down to deform the sheet metal, the push rod presses against the spring rod, transforming the rigid extrusion of the press into a progressive flexible pressurization.

[0011] A further description of a plate bending device for an electric meter box as described above:

[0012] A positioning sleeve is embedded in the mounting hole, and a slot is provided on the inner wall of the mounting hole. A retaining strip is provided on the positioning sleeve that meshes with the slot. The positioning sleeve fixes the spring rod through a threaded groove provided at the bottom of the inner wall.

[0013] A further description of a plate bending device for an electric meter box as described above:

[0014] The spring rod includes a mounting part embedded in the positioning sleeve, and the surface of the mounting part is provided with a threaded part that meshes with the threaded groove.

[0015] A guide rod is provided in the middle of the mounting part, a movable rod is slidably nested on the surface of the guide rod, and a spring is wound around the surface of the guide rod, with the two ends of the spring respectively abutting against the movable rod and the mounting part;

[0016] The top of the movable rod is provided with an abutment part that fits into the top rod.

[0017] A further description of a plate bending device for an electric meter box as described above:

[0018] The bottom of the mounting part is provided with a gripping part, and the bottom of the mounting cylinder is provided with a countersunk hole of the same thickness as the gripping part. After the spring rod is installed, the gripping part is embedded in the countersunk hole.

[0019] An inspection port is provided at the bottom of the fitting part.

[0020] A further description of a plate bending device for an electric meter box as described above:

[0021] The mounting cylinder is controlled to rotate by a switching mechanism. The switching mechanism includes a mounting groove on the fitting part, a hinge shaft is rotatably embedded in the mounting groove, and a drive wheel is sleeved on the hinge shaft to mesh with toothed rings sleeved on the surfaces of the two mounting cylinders.

[0022] A further description of a plate bending device for an electric meter box as described above:

[0023] The mounting cavity is provided with an adapter groove, the depth of which is the same as the maximum distance of the reverse movement of the fitting part.

[0024] A further description of a plate bending device for an electric meter box as described above:

[0025] At least one locking mechanism is provided between the mounting cavity and the fitting part. The locking mechanism includes a mounting seat installed on the fitting part and a connecting shaft installed on the mounting cavity.

[0026] The mounting base is equipped with an annular groove, and a turntable is rotatably embedded in the annular groove. A connecting rod is rotatably mounted on the turntable via a mounting shaft, and the connecting shaft is rotatably connected to the end of the connecting rod.

[0027] A further description of a plate bending device for an electric meter box as described above:

[0028] The turntable is equipped with a fixing component via a rotating part, and the annular groove is provided with two insertion holes that cooperate with the fixing component.

[0029] A further description of a plate bending device for an electric meter box as described above:

[0030] The fastener includes a sliding cavity disposed on the rotating part, a pin is disposed through the middle of the sliding cavity, the outer diameter of one end of the pin is the same as the inner diameter of the insertion hole, and a handle is disposed on the outer end of the pin.

[0031] One of the above technical solutions has the following advantages or beneficial effects:

[0032] 1. With the clamping and buffering mechanisms in place, when the sheet metal needs to be processed, the sheet metal is first fixed on the base. By starting the press, the press drives the fitting part to descend through the mounting cavity. The fitting part drives the bending knife to make slight contact with the surface of the sheet metal through the female and female clamps. At this time, the spring rod is in a natural state and has not deformed. As the bending knife continues to press down, the sheet metal begins to deform and generate a reaction force. At this time, the bending knife pushes the female and female clamps to rise. The female clamp pushes the fitting part to slide in the mounting cavity. The top rod passes through the through hole and is pressed against the abutment part. The top rod pushes the movable rod through the abutment part and, together with the guide rod, squeezes the spring. The spring absorbs part of the impact force through elastic deformation, transforming rigid compression into progressive flexible pressure.

[0033] 2. Through the set switching mechanism, by rotating the knob, the knob drives the two toothed rings to rotate synchronously under the restriction of the hinge shaft. The toothed rings drive the two mounting cylinders to rotate synchronously to achieve the purpose of switching the spring rod. The two toothed rings rotate synchronously and in opposite directions. Therefore, the order of installing the spring rod in the two mounting holes also needs to be reversed to ensure that the stiffness of the spring rod on both sides is the same after adjustment, thereby achieving the purpose of quickly replacing the spring rod to meet the bending operation requirements of plates with different surface thicknesses. Attached Figure Description

[0034] Figure 1 A three-dimensional structural schematic diagram of a plate bending device for an electric meter box is shown;

[0035] Figure 2 A partial formal structural schematic diagram of a plate bending device for an electric meter box is shown;

[0036] Figure 3 A three-dimensional structural diagram of the buffer mechanism in its natural state is shown.

[0037] Figure 4 A three-dimensional structural diagram of the buffer mechanism in a compressed state is shown.

[0038] Figure 5 A schematic diagram of the clamping mechanism in its three-dimensional disassembled state is shown;

[0039] Figure 6 A three-dimensional structural diagram of the mounting cavity is shown;

[0040] Figure 7 A three-dimensional structural schematic diagram of the fitting part and the buffer mechanism is shown;

[0041] Figure 8 A partial three-dimensional structural schematic diagram of the buffer mechanism is shown;

[0042] Figure 9 A partial three-dimensional cross-sectional structural schematic diagram of the buffer mechanism is shown;

[0043] Figure 10 A three-dimensional disassembled structural diagram of the positioning sleeve and spring rod is shown;

[0044] Figure 11 A three-dimensional structural schematic diagram of the female clamp is shown;

[0045] Figure 12 A partial three-dimensional cross-sectional structural schematic diagram of the switching mechanism is shown;

[0046] Figure 13 A three-dimensional structural schematic diagram of the switching mechanism is shown;

[0047] Figure 14 It shows Figure 3Enlarged structural diagram at point A;

[0048] Figure 15 A first three-dimensional structural schematic diagram of the locking mechanism is shown;

[0049] Figure 16 A schematic diagram of the second three-dimensional structure of the locking mechanism is shown;

[0050] Figure 17 A three-dimensional cross-sectional structural diagram of the locking mechanism is shown;

[0051] Figure 18 It shows Figure 17 A magnified structural diagram at point B in the middle.

[0052] Legend:

[0053] 10. Bending machine body; 11. Press; 12. Base; 13. Bending blade; 131. Positioning column;

[0054] 20. Clamping mechanism; 21. Female clamp; 22. Fitting part; 221. Through hole; 222. Inspection port; 23. Female clamp; 24. Mounting cavity; 25. Slider; 26. Slide rail;

[0055] 30. Buffer mechanism; 31. Lower chamber; 32. Upper chamber; 33. Mounting cylinder; 34. Mounting hole; 341. Slot; 35. Positioning sleeve; 351. Locking strip; 352. Threaded groove; 36. Spring rod; 361. Mounting part; 362. Guide rod; 363. Movable rod; 364. Abutment part; 365. Spring; 366. Grip part; 367. Threaded part; 37. Push rod;

[0056] 40. Switching mechanism; 41. Gear ring; 42. Mounting slot; 43. Hinge shaft; 44. Drive wheel; 45. Knob; 46. Adaptor slot;

[0057] 50. Locking mechanism; 51. Mounting base; 52. Annular groove; 53. Turntable; 54. Mounting shaft; 55. Connecting rod; 56. Connecting shaft; 57. Insertion hole; 58. Rotating part; 59. Fixing part; 591. Sliding cavity; 592. Pin; 593. Handle. Detailed Implementation

[0058] The following will describe in detail, with reference to the accompanying drawings of the embodiments of the present invention, a clear and complete description of a meter box plate bending device of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] To address the issue of varying thicknesses in different areas of the sheet metal used in meter boxes, resulting in surface thickness differences, existing sheet metal bending machines rely solely on springs within the folding box for cushioning. This limitation prevents the rapid replacement of these springs to accommodate different sheet thicknesses. Therefore, this invention proposes a sheet metal bending device for meter boxes. Figure 1 - Figure 18 As shown:

[0060] The machine includes a bending machine body 10, which includes a press 11 and a base 12 for placing the sheet metal installed below the press 11. A bending blade 13 matching the base 12 is mounted on the press 11 via a clamping mechanism 20. The clamping mechanism 20 includes a mounting cavity 24 mounted on the press 11, and a fitting part 22 is movably nested within the mounting cavity 24. A female clamp 21 is mounted at the bottom of the fitting part 22. The female clamp 21 cooperates with a female clamp 23 to clamp and fix the bending blade 13. To prevent the bending blade 13 from moving laterally, such as... Figure 5 As shown, the bending blade 13 is also provided with a positioning post 131. Both the female clamp 21 and the female clamp 23 are provided with slots that cooperate with the positioning post 131. With the cooperation of the slots and the positioning post 131, the bending blade 13 is prevented from moving laterally. At the same time, the top of the positioning post 131 is pressed against the bottom of the fitting part 22 to ensure that the reaction force generated when the bending blade 13 is pressed down can be directly transmitted to the fitting part 22.

[0061] like Figure 6 and Figure 7 As shown, the fitting part 22 is provided with sliders 25 on both sides, and the mounting cavity 24 is provided with slide rails 26 on both sides that cooperate with the sliders 25. When the bending knife 13 is pressed down, the reaction force generated pushes the fitting part 22 to slide in the mounting cavity 24. The fitting part 22 drives the sliders 25 to move horizontally along the length of the slide rails 26, so as to avoid the bending knife 13 from shifting laterally during compression and to ensure that the pressure is transmitted vertically.

[0062] like Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, a buffer mechanism 30 is installed on the fitting part 22. The buffer mechanism 30 includes two lower chambers 31 symmetrically opened on the fitting part 22. A mounting cylinder 33 is rotatably arranged in each of the lower chambers 31. A number of mounting holes 34 opened around the mounting cylinder 33 are respectively installed with spring rods 36 of different stiffness. The spring rods 36 of different stiffness can be switched by rotating the mounting cylinder 33. A top rod 37 is installed inside the mounting cavity 24. The top rod 37 is coaxial with the through hole 221 opened at the top of the fitting part 22 and the spring rod 36 located below the through hole 221.

[0063] Furthermore, such as Figure 6As shown, an upper chamber 32 is provided on the mounting cavity 24 and sleeved on the surface of the lower chamber 31. The inner diameter of the upper chamber 32 is larger than the outer diameter of the lower chamber 31. The upper chamber 32 and the lower chamber 31 cooperate to cover each other to protect the spring rod 36 installed in the lower chamber 31. The depth of the upper chamber 32 is the same as the maximum distance of the reverse movement when the bending knife 13 is pressed down, so as to avoid collision and interference between the upper chamber 32 and the lower chamber 31 during the bending operation.

[0064] Preferred, such as Figure 9 As shown, a positioning sleeve 35 is embedded in the mounting hole 34, and a groove 341 is provided on the inner wall of the mounting hole 34. A retaining strip 351 that meshes with the groove 341 is provided on the positioning sleeve 35. The spring rod 36 is fixed by a threaded groove 352 provided at the bottom of the inner wall of the positioning sleeve 35. Furthermore, the spring rod 36 can be distinguished by using positioning sleeves 35 of different colors, for example, red for high stiffness spring rod 36 and blue for low stiffness spring rod 36, so as to distinguish different types of spring rod 36.

[0065] Furthermore, in order to improve the stability of the spring rod 36, such as Figure 9 As shown, the spring rod 36 includes a mounting part 361 embedded in the positioning sleeve 35. The surface of the mounting part 361 is provided with a threaded part 367 that meshes with the threaded groove 352. A guide rod 362 is provided in the middle of the mounting part 361. A movable rod 363 is slidably nested on the surface of the guide rod 362. A spring 365 is wound on the surface of the guide rod 362. The two ends of the spring 365 abut against the movable rod 363 and the mounting part 361, respectively. Through this design, the guide rod 362 can guide the compression direction of the spring 365, thereby preventing the spring 365 from shifting laterally during compression and ensuring the vertical transmission of the supporting force. The top of the movable rod 363 is provided with an abutment part 364 that fits into the top rod 37.

[0066] When processing the sheet material is required, the sheet material is first fixed on the base 12. By starting the press 11, the press 11 drives the fitting part 22 to descend through the mounting cavity 24. The fitting part 22 drives the bending blade 13 to make slight contact with the surface of the sheet material through the female clamp 21 and the female clamp 23. At this time, the spring rod 36 is in a natural state and has not deformed. As the bending blade 13 continues to press down, the sheet material begins to deform and generate a reaction force. At this time, the bending blade 13 pushes the female clamp 21 and the female clamp 23 to rise. The female clamp 21 pushes the fitting part 22 to slide in the mounting cavity 24. The push rod 37 passes through the through hole 221 and abuts against the abutting part 364. The push rod 37 pushes the movable rod 363 through the abutting part 364 and cooperates with the guide rod 362 to compress the spring 365. The spring 365 absorbs part of the impact force through elastic deformation, transforming rigid compression into progressive flexible pressure. After the plate bending is completed, the press 11 pulls the bending knife 13 to reset. At this time, the spring 365 restores its deformation and pushes the bending knife 13 back to its position smoothly.

[0067] For ease of replacement and maintenance of spring rod 36, such as Figure 10 and Figure 11 As shown, the bottom of the mounting part 361 is provided with a gripping part 366, and the bottom of the mounting cylinder 33 is provided with a countersunk hole of the same thickness as the gripping part 366. After the spring rod 36 is installed, the gripping part 366 is embedded in the countersunk hole. Through this design, the spring rod 366 is fully embedded in the countersunk hole to ensure that it is installed in place. At the same time, it is ensured that the gripping part 366 will not interfere with the normal rotation of the mounting cylinder 33 after the spring rod 36 is installed. The bottom of the fitting part 22 is provided with an inspection port 222. When it is necessary to replace the spring rod 36 installed in the positioning sleeve 35, the spring rod 36 to be replaced is rotated to a position coaxial with the inspection port 222. By rotating the gripping part 366, the threaded part 367 can be engaged with the threaded groove 352, and the spring rod 36 can be removed from the positioning sleeve 35 for replacement and maintenance.

[0068] like Figure 12 and Figure 13 As shown, the mounting cylinder 33 is controlled to rotate by the switching mechanism 40. The switching mechanism 40 includes a mounting groove 42 opened on the fitting part 22. A hinge shaft 43 is rotatably embedded in the mounting groove 42. A drive wheel 44 is sleeved on the hinge shaft 43 and meshes with the toothed rings 41 sleeved on the surfaces of the two mounting cylinders 33. At the same time, an adaptation groove 46 is opened on the mounting cavity 24. The depth of the adaptation groove 46 is the same as the maximum distance of the reverse movement of the fitting part 22, thereby achieving the purpose of avoiding collision and interference between the mounting groove 42 and the drive wheel 44 and the mounting cavity 24.

[0069] By rotating the knob 45, the knob 45 drives the two gear rings 41 to rotate synchronously under the constraint of the hinge shaft 43. The gear rings 41 drive the two mounting cylinders 33 to rotate synchronously to achieve the purpose of switching the spring rod 36. It should be noted that the two gear rings 41 rotate synchronously but in opposite directions. Therefore, the order of installing the spring rod 36 in the two mounting holes 34 also needs to be reversed to ensure that the stiffness of the spring rods 36 on both sides is the same after adjustment, thereby achieving the purpose of quickly replacing the spring rod 36 to meet the bending operation requirements of plates with different surface thicknesses.

[0070] Furthermore, a knob 45 is also fitted on the hinge shaft 43. By turning the knob 45, the drive wheel 44 can be rotated through the hinge shaft 43, thus avoiding direct contact between the staff and the drive wheel 44.

[0071] In order to enable the equipment to actively switch between rigid extrusion and progressive flexible pressurization, such as Figure 12 , Figures 14-18As shown, at least one locking mechanism 50 is provided between the mounting cavity 24 and the fitting part 22. Preferably, there are two locking mechanisms 50 arranged symmetrically. Each locking mechanism 50 includes a mounting seat 51 mounted on the fitting part 22 and a connecting shaft 56 mounted on the mounting cavity 24. An annular groove 52 is mounted on the mounting seat 51. A turntable 53 is rotatably embedded in the annular groove 52. A connecting rod 55 is rotatably mounted on the turntable 53 via the mounting shaft 54. The connecting shaft 56 is rotatably connected to the end of the connecting rod 55.

[0072] The fixing member 59 includes a sliding cavity 591 provided on the rotating part 58. A pin 592 is provided through the middle of the sliding cavity 591. The outer diameter of one inner end of the pin 592 is the same as the inner diameter of the insertion hole 57. A handle 593 is provided on one outer end of the pin 592.

[0073] During normal progressive flexible pressurization, when the bending blade 13 drives the fitting part 22 to rise, the mounting cavity 24 pushes the mounting shaft 54 ​​through the connecting shaft 56 and the connecting rod 55, causing the mounting shaft 54 ​​to drive the turntable 53 to make circular motion under the restriction of the annular groove 52. The turntable 53 is equipped with a fixing member 59 through the rotating part 58. The annular groove 52 is provided with two insertion holes 57 that cooperate with the fixing member 59. Depending on the material to be processed, when the spring rod 36 is in its natural state and has not deformed, the fixing member 59 is inserted into the insertion hole 57 to lock the turntable 53, so that the turntable 53 cannot rotate. At this time, the positions of the fitting part 22 and the mounting cavity 24 are fixed. When bending, the spring rod 36 is no longer squeezed by the top rod 37 and deforms. At this time, the bending blade 13, driven by the press 11, cooperates with the base 12 to rigidly compress the plate. The pressure of rigid compression is uniform and suitable for processing parts in the meter box that have high requirements for the plasticity of the material.

[0074] Working principle:

[0075] The plate to be processed is fixedly placed on the base 12. The press 11 is started. The press 11 drives the fitting part 22 to descend through the mounting cavity 24. The fitting part 22 drives the bending knife 13 to make slight contact with the surface of the plate with the help of the female clamp 21 and the female clamp 23. At this time, the spring rod 36 is in a natural state and has not been deformed.

[0076] As the bending blade 13 is continuously pressed down, the sheet metal begins to deform and generate a reaction force, pushing the female clamp 21 and the female clamp 23 upward. The female clamp 21 pushes the fitting part 22 to slide in the mounting cavity 24. The top rod 37 passes through the through hole 221 on the fitting part 22 and abuts against the abutting part 364 at the top of the spring rod 36 and the movable rod 363. The top rod 37 pushes the movable rod 363 through the abutting part 364, which, together with the guide rod 362, compresses the spring 365. The spring 365 absorbs part of the impact force through elastic deformation, transforming rigid compression into gradual flexible pressure.

[0077] After the sheet metal is bent, the press 11 pulls the bending knife 13 back to its original position. At this time, the spring 365 returns to its original deformation and pushes the bending knife 13 back to its original position smoothly.

[0078] When it is necessary to replace the spring rod 36 installed in the positioning sleeve 35, rotate the spring rod 36 to be replaced to a position coaxial with the inspection port 222 at the bottom of the fitting part 22. By rotating the gripping part 366 at the bottom of the spring rod 36 mounting part 361, the engagement between the threaded part 367 and the threaded groove 352 is released, and the spring rod 36 is removed from the positioning sleeve 35 for replacement and maintenance.

[0079] When it is necessary to switch between spring rods 36 with different stiffnesses, the knob 45 is rotated. Under the constraint of the hinge shaft 43, the knob 45 drives the drive wheel 44 to rotate. The drive wheel 44 drives the toothed rings 41 fitted onto the surfaces of the two mounting cylinders 33 to mesh with each other, causing the two toothed rings 41 to rotate synchronously in opposite directions. This, in turn, drives the two mounting cylinders 33 to rotate synchronously, thus switching between spring rods 36 with different stiffnesses. Note that the order in which the spring rods 36 are installed in the two mounting holes 34 must be reversed to ensure that the stiffness of the spring rods 36 on both sides is the same after adjustment.

[0080] During the normal gradual flexible pressurization, the bending knife 13 drives the fitting part 22 to rise, and the mounting cavity 24 pushes the mounting shaft 54 ​​through the connecting shaft 56 and the connecting rod 55, so that the mounting shaft 54 ​​drives the turntable 53 to make a circular motion in the annular groove 52.

[0081] Depending on the material to be processed, when it is necessary to switch processing modes, when the spring rod 36 is in its natural state and has not deformed, insert one end of the pin 592 of the fixing part 59 into the insertion hole 57 on the annular groove 52 to lock the turntable 53 so that the turntable 53 cannot rotate. At this time, the positions of the fitting part 22 and the mounting cavity 24 are fixed. When bending, the spring rod 36 is no longer deformed by the pressure of the top rod 37. The bending knife 13, under the push of the press 11, cooperates with the base 12 to rigidly compress the plate.

[0082] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the present invention's technical concept of a meter box plate bending device, should be covered within the scope of protection of the present invention.

Claims

1. A plate bending device for an electric meter box, comprising a bending machine body (10), the bending machine body (10) including a press (11) and a base (12) for placing the plate installed below the press (11), characterized in that, The press (11) is equipped with a bending knife (13) that matches the base (12) by means of a clamping mechanism (20). The clamping mechanism (20) includes a mounting cavity (24) installed on the press (11). A fitting part (22) is movably nested in the mounting cavity (24). A female clamp (21) is installed at the bottom of the fitting part (22). The female clamp (21) cooperates with the female clamp (23) to clamp and fix the bending knife (13). A buffer mechanism (30) is installed on the fitting part (22). The buffer mechanism (30) includes two lower chambers (31) symmetrically opened on the fitting part (22). A mounting cylinder (33) is rotatably arranged in each of the lower chambers (31). A number of mounting holes (34) are opened around the mounting cylinder (33) and spring rods (36) of different stiffness are installed in them respectively. The spring rods (36) of different stiffness can be switched by rotating the mounting cylinder (33). In addition, the push rod (37) installed inside the mounting cavity (24) is coaxial with the through hole (221) opened at the top of the fitting part (22) and the spring rod (36) located below the through hole (221). When the bending knife (13) presses down to deform the plate, the push rod (37) presses against the spring rod (36) to transform the rigid extrusion of the press (11) into a progressive flexible press. At least one locking mechanism (50) is provided between the mounting cavity (24) and the fitting part (22). The locking mechanism (50) includes a mounting seat (51) mounted on the fitting part (22) and a connecting shaft (56) mounted on the mounting cavity (24). An annular groove (52) is installed on the mounting base (51), and a turntable (53) is rotatably embedded in the annular groove (52). A connecting rod (55) is rotatably mounted on the turntable (53) via a mounting shaft (54). A connecting shaft (56) is rotatably connected to the end of the connecting rod (55). The turntable (53) is fitted with a fixing member (59) via a rotating part (58), and the annular groove (52) is provided with two insertion holes (57) that cooperate with the fixing member (59). The fixing member (59) includes a sliding cavity (591) provided on the rotating part (58), and a pin (592) is provided through the middle of the sliding cavity (591).

2. The meter box plate bending device according to claim 1, characterized in that, A positioning sleeve (35) is embedded in the mounting hole (34). A slot (341) is provided on the inner wall of the mounting hole (34). A retaining strip (351) that meshes with the slot (341) is provided on the positioning sleeve (35). The positioning sleeve (35) fixes the spring rod (36) through the threaded groove (352) provided at the bottom of the inner wall.

3. The meter box plate bending device according to claim 2, characterized in that, The spring rod (36) includes a mounting part (361) embedded in the positioning sleeve (35), and the surface of the mounting part (361) is provided with a threaded part (367) that meshes with the threaded groove (352). A guide rod (362) is provided in the middle of the mounting part (361). A movable rod (363) is slidably nested on the surface of the guide rod (362). A spring (365) is wound around the surface of the guide rod (362). The two ends of the spring (365) abut against the movable rod (363) and the mounting part (361) respectively. The top of the movable rod (363) is provided with an abutment part (364) that fits into the top rod (37).

4. The meter box plate bending device according to claim 3, characterized in that, The bottom of the mounting part (361) is provided with a gripping part (366), and the bottom of the mounting cylinder (33) is provided with a countersunk hole of the same thickness as the gripping part (366). After the spring rod (36) is installed, the gripping part (366) is embedded in the countersunk hole. The bottom of the fitting part (22) is provided with an inspection port (222).

5. The meter box plate bending device according to claim 1, characterized in that, The mounting cylinder (33) is controlled to rotate by a switching mechanism (40). The switching mechanism (40) includes a mounting groove (42) opened on the fitting part (22). A hinge shaft (43) is rotatably embedded in the mounting groove (42). A drive wheel (44) is sleeved on the hinge shaft (43) and meshes with a toothed ring (41) sleeved on the surface of the two mounting cylinders (33).

6. The meter box plate bending device according to claim 5, characterized in that, The mounting cavity (24) is provided with an adapter groove (46), the depth of which is the same as the maximum distance of the reverse movement of the fitting part (22).

7. A plate bending device for an electric meter box according to claim 6, characterized in that, The outer diameter of one end of the inner side of the pin (592) is the same as the inner diameter of the socket (57), and a handle (593) is provided on one end of the outer side of the pin (592).

Images