Electric meter box plate folding device

Abstract

The invention discloses an electric meter box plate folding device, and belongs to the technical field of electric meter box production. Through arrangement of a clamping mechanism and a buffer mechanism, when a plate needs to be processed, the plate is firstly fixedly placed on a base, and a pressing machine is started to drive an embedding part to descend through a mounting cavity, so that the plate is folded; the embedding part drives the bending cutter to make slight contact with the surface of the plate through the primary clamp and the secondary clamp, at the moment, the spring rod is in a natural state and does not deform, the plate starts to deform and generates counter-acting force along with continuous downward pressing of the bending cutter, at the moment, the bending cutter pushes the primary clamp and the secondary clamp to ascend, and the primary clamp pushes the embedding part to slide in the mounting cavity; the ejector rod penetrates through the through hole and abuts against the abutting portion, the ejector rod pushes the movable rod through the abutting portion and is matched with the guide rod to extrude the spring, the spring absorbs part of impact force through elastic deformation, and rigid extrusion is converted into progressive flexible pressurization.

Description

Technical Field

[0001] The invention relates to the technical field of meter box production, and in particular to a plate folding device for an electric meter box. Background Art

[0002] A plate 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 plate to be folded is placed on the folding box, and the plate is initially positioned by the positioning plate and the limit roller. The electric telescopic rod is started to drive the extrusion plate to move downward to extrude the plate. During the extrusion process, the spring at the bottom of the folding box acts as a buffer to prevent the plate 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 plate can be accurately formed during the extrusion process.

[0004] Existing meter box panels mostly use fiber-reinforced polyester materials instead of 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 plate folding device must avoid material degradation caused by rigid 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 of the positions where raised reinforcing ribs and sealing areas are provided is increased to improve the rigidity, while the thickness in the heat dissipation area is reduced. Therefore, there are thickness differences on the plate surface. When the thickness of the plate increases, if the same deformation amount is required, a spring with higher rigidity needs to be replaced. The buffering of the existing plate bending machine is only achieved through the spring in the folding box. Although it can also play a certain role in avoiding rigid deformation, the spring in the folding box cannot be quickly replaced to adapt to plates of different thicknesses. Summary of the Invention

[0006] The purpose of the present invention is to solve the problem that the thickness of different areas on the meter box plate is not the same, and there are thickness differences on the plate surface. The buffering of the existing plate bending machine is only achieved by the spring in the folding box, and the spring in the folding box cannot be quickly replaced to adapt to plates of different thicknesses. A meter box plate folding device is proposed.

[0007] In order to achieve the above purpose, the present invention adopts the following technology: a folding device for an electric meter box plate:

[0008] The folding machine comprises a main body, the main body comprising a press and a base mounted below the press for placing a plate, the press is mounted with a bending knife matching the base via a clamping mechanism, the clamping mechanism comprises a mounting cavity mounted on the press, a fitting portion movably nested in the mounting cavity, a female clamp mounted at the bottom of the fitting portion, the female clamp cooperating with the sub-clamp to clamp and fix the bending knife;

[0009] The engaging portion is provided with a buffer mechanism, which comprises two lower chambers symmetrically provided on the engaging portion, wherein a mounting cylinder is rotatably provided in each of the lower chambers, and spring rods of different stiffness are respectively installed in a plurality of mounting holes provided around the mounting cylinders, and the spring rods of different stiffness are switched by rotating the mounting cylinders;

[0010] In addition, a push rod installed inside the installation cavity is coaxial with the through hole opened at the top of the interlocking part and the spring rod located below the through hole. When the bending knife presses down to deform the plate, the push rod presses against the spring rod, converting the rigid extrusion of the press into progressive flexible pressure.

[0011] As a further description of the above technology, a folding device for an electric meter box plate:

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

[0013] As a further description of the above technology, a folding device for an electric meter box plate:

[0014] The spring rod comprises a mounting portion embedded in the positioning sleeve, and a threaded portion is provided on the surface of the mounting portion and meshes with the thread groove;

[0015] A guide rod is provided in the middle of the mounting portion, a movable rod is slidably embedded on the surface of the guide rod, a spring is wound around the surface of the guide rod, and both ends of the spring are respectively pressed against the movable rod and the mounting portion;

[0016] The top of the movable rod is provided with an abutment portion engaged with the push rod.

[0017] As a further description of the above technology, a folding device for an electric meter box plate:

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

[0019] An inspection opening is provided on the bottom of the engaging portion.

[0020] As a further description of the above technology, a folding device for an electric meter box plate:

[0021] The mounting tube is controlled to rotate by a switching mechanism, which includes a mounting groove provided on the engaging portion, in which a hinge shaft is rotatably embedded, and a driving wheel is mounted on the hinge shaft and meshes with the gear rings mounted on the surfaces of the two mounting tubes.

[0022] As a further description of the above technology, a folding device for an electric meter box plate:

[0023] An adapting groove is provided on the installation cavity, and the depth of the adapting groove is the same as the maximum distance of the reverse movement of the engaging portion.

[0024] As a further description of the above technology, a folding device for an electric meter box plate:

[0025] At least one locking mechanism is connected between the installation cavity and the fitting portion, and the locking mechanism includes a mounting seat mounted on the fitting portion and a connecting shaft mounted on the installation cavity;

[0026] An annular groove is installed on the mounting seat, a turntable is rotatably embedded in the annular groove, a connecting rod is rotatably arranged on the turntable through the mounting shaft, and the connecting shaft is rotatably connected to the end of the connecting rod.

[0027] As a further description of the above technology, a folding device for an electric meter box plate:

[0028] The turntable is mounted with a fixing piece via a rotating portion, and the annular groove is provided with two insertion holes that cooperate with the fixing piece.

[0029] As a further description of the above technology, a folding device for an electric meter box plate:

[0030] The fixing member includes a sliding cavity arranged on the rotating part, a latch is arranged through the middle of the sliding cavity, the outer diameter of the inner end of the latch is the same as the inner diameter of the jack, and a handle is arranged at the outer end of the latch.

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

[0032] 1. Through the provided clamping mechanism and buffer mechanism, when the plate needs to be processed, the plate is first fixed on the base, and the pressing machine is started to drive the engaging part down through the installation cavity. The engaging part drives the bending knife to slightly contact the surface of the plate through the mother clamp and the child clamp. At this time, the spring rod is in a natural state and does not deform. As the bending knife continues to press down, the plate begins to deform and generates a reaction force. At this time, the bending knife pushes the mother clamp and the child clamp to rise, and the mother clamp pushes the engaging part to slide in the installation cavity. The push rod passes through the through hole and abuts against the abutment. The push rod pushes the movable rod through the abutment and cooperates with the guide rod to squeeze the spring. The spring absorbs part of the impact force through elastic deformation, and converts rigid extrusion into progressive flexible pressurization.

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

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

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

[0036] Figure 3 A schematic diagram of the three-dimensional structure of the buffer mechanism in a natural state is shown;

[0037] Figure 4 shows a schematic diagram of the three-dimensional structure of the buffer mechanism in a compressed state;

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

[0039] Figure 6 shows a schematic diagram of the three-dimensional structure of the installation cavity;

[0040] Figure 7 A schematic diagram of the three-dimensional structure of the interlocking portion and the buffer mechanism is shown;

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

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

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

[0044] Figure 11 shows a schematic diagram of the three-dimensional structure of the female clamp;

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

[0046] Figure 13 shows a schematic diagram of the three-dimensional structure of the switching mechanism;

[0047] Figure 14 Shown Figure 3Schematic diagram of the enlarged structure at A in the middle;

[0048] Figure 15 shows a first three-dimensional structural schematic diagram of the locking mechanism;

[0049] Figure 16 shows a second three-dimensional structural schematic diagram of the locking mechanism;

[0050] Figure 17 A schematic diagram of a three-dimensional cross-sectional structure of a locking mechanism is shown;

[0051] Figure 18 Shown Figure 17 Schematic diagram of the enlarged structure at point B in the middle.

[0052] Legend:

[0053] 10. Plate bending machine body; 11. Pressing machine; 12. Base; 13. Bending knife; 131. Positioning column;

[0054] 20. Clamping mechanism; 21. Female clamp; 22. Fitting portion; 221. Through hole; 222. Inspection port; 23. Sub-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. Clamping slot; 35. Positioning sleeve; 351. Clamping strip; 352. Threaded groove; 36. Spring rod; 361. Mounting portion; 362. Guide rod; 363. Movable rod; 364. Abutment portion; 365. Spring; 366. Grip portion; 367. Threaded portion; 37. Ejector rod;

[0056] 40. Switching mechanism; 41. Gear ring; 42. Mounting slot; 43. Articulated shaft; 44. Driving wheel; 45. Knob; 46. Adapter slot;

[0057] 50. Locking mechanism; 51. Mounting seat; 52. Annular groove; 53. Turntable; 54. Mounting shaft; 55. Connecting rod; 56. Connecting shaft; 57. Socket; 58. Rotating part; 59. Fixing part; 591. Sliding cavity; 592. Latch; 593. Handle. DETAILED DESCRIPTION

[0058] The following will be combined with the accompanying drawings to clearly and completely describe the technical embodiments of the present invention, a device for folding a sheet of sheet metal for an electric meter box. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0059] In order to solve the problem that the thickness of different areas on the meter box plate is different and there are thickness differences on the plate surface, the buffer of the existing plate bending machine is only achieved by the spring in the folding box, and the spring in the folding box cannot be quickly replaced to adapt to plates of different thicknesses, the present invention proposes a meter box plate folding device, such as Figure 1 - Figure 18 As shown:

[0060] The folding machine body 10 includes a press 11 and a base 12 for placing a plate installed under the press 11. A bending knife 13 matching the base 12 is installed on the press 11 through a clamping mechanism 20. The clamping mechanism 20 includes a mounting cavity 24 installed on the press 11. A fitting portion 22 is movably nested in the mounting cavity 24. A female clamp 21 is installed at the bottom of the fitting portion 22. The female clamp 21 cooperates with the sub-clamp 23 to clamp and fix the bending knife 13. In order to prevent the bending knife 13 from moving laterally, such as Figure 5 As shown, the bending knife 13 is further provided with a positioning post 131, and the female clamp 21 and the sub-clamp 23 are both provided with slots that cooperate with the positioning post 131. Under the cooperation of the slot and the positioning post 131, the bending knife 13 is prevented from moving laterally. At the same time, the top end of the positioning post 131 is tightly pressed against the bottom end of the fitting portion 22 to ensure that the reaction force generated when the bending knife 13 is pressed downward can be directly transmitted to the fitting portion 22.

[0061] like Figure 6 and Figure 7 As shown, sliders 25 are provided on both sides of the engaging portion 22, and slide rails 26 cooperating with the sliders 25 are provided on both sides of the mounting cavity 24. When the bending knife 13 is pressed down, the reaction force generated pushes the engaging portion 22 to slide in the mounting cavity 24, and the engaging portion 22 drives the slider 25 to move horizontally along the length direction of the slide rail 26, so as to avoid lateral deviation of the bending knife 13 during compression and ensure vertical transmission of pressure.

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

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

[0064] Preferably, Figure 9 As shown, a positioning sleeve 35 is embedded in the mounting hole 34, a card slot 341 is opened on the inner wall of the mounting hole 34, and a card strip 351 that engages with the card slot 341 is provided on the positioning sleeve 35. The spring rod 36 is fixed by a threaded groove 352 provided at the bottom end of the inner wall of the positioning sleeve 35. Furthermore, the spring rods 36 are distinguished by using positioning sleeves 35 of different colors. For example, red represents a high-rigidity spring rod 36, and blue represents a low-rigidity spring rod 36, so as to achieve the purpose of distinguishing different types of spring rods 36.

[0065] Furthermore, in order to improve the stability of the spring rod 36, as shown in FIG. Figure 9 As shown, the spring rod 36 includes a mounting portion 361 embedded in the positioning sleeve 35, and the surface of the mounting portion 361 is provided with a threaded portion 367 that engages with the thread groove 352. A guide rod 362 is provided in the middle of the mounting portion 361, and a movable rod 363 is slidably embedded on the surface of the guide rod 362. A spring 365 is wound around the surface of the guide rod 362, and both ends of the spring 365 are respectively pressed against the movable rod 363 and the mounting portion 361. Through this design, the guide rod 362 can guide the compression direction of the spring 365, thereby preventing the spring 365 from lateral deviation during compression and ensuring the vertical transmission of the supporting force. The top of the movable rod 363 is provided with an abutment portion 364 that engages with the top rod 37.

[0066] When the plate needs to be processed, the plate is first fixed on the base 12, and the pressing machine 11 is started to drive the engaging portion 22 downward through the mounting cavity 24. The engaging portion 22 drives the bending knife 13 to slightly contact the surface of the plate through the female clamp 21 and the sub-clamp 23. At this time, the spring rod 36 is in a natural state and does not deform. As the bending knife 13 continues to press down, the plate begins to deform and generates a reaction force. At this time, the bending knife 13 pushes the female clamp 21 and the sub-clamp 23 to rise. The female clamp 21 pushes the engaging portion 22 to slide in the mounting cavity 24, and the push rod 37 passes through the through hole 221 and abuts against the abutment portion 364. The push rod 37 pushes the movable rod 363 through the abutment portion 364, and cooperates with the guide rod 362 to squeeze the spring 365. The spring 365 absorbs part of the impact force through elastic deformation, and converts the rigid extrusion into progressive flexible pressure. After the plate bending is completed, the pressing machine 11 pulls the bending knife 13 to reset. At this time, the spring 365 recovers its deformation and pushes the bending knife 13 to return smoothly.

[0067] In order to facilitate the replacement and maintenance of the spring rod 36, as shown in FIG. Figure 10 and Figure 11 As shown, a gripping portion 366 is provided at the bottom of the mounting portion 361, and a countersunk hole with the same thickness as the gripping portion 366 is provided at the bottom of the mounting tube 33. After the spring rod 36 is installed, the gripping portion 366 is embedded in the countersunk hole. Through this design, the gripping portion 366 is completely embedded in the countersunk hole to ensure that the spring rod 36 is installed in place, and at the same time, it is ensured that after the spring rod 36 is installed, the gripping portion 366 will not interfere with the normal rotation of the mounting tube 33. An inspection port 222 is provided at the bottom of the fitting portion 22. 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 coaxial position with the inspection port 222. By rotating the gripping portion 366, the threaded portion 367 can be contacted to engage with the thread groove 352, and the spring rod 36 can be taken out of 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 a switching mechanism 40. The switching mechanism 40 includes a mounting groove 42 provided on the engaging portion 22. A hinge shaft 43 is rotatably embedded in the mounting groove 42. A driving wheel 44 is mounted on the hinge shaft 43 and meshes with the gear rings 41 provided on the surfaces of the two mounting cylinders 33. At the same time, an adapting groove 46 is provided on the mounting cavity 24. The depth of the adapting groove 46 is the same as the maximum distance of the reverse movement of the engaging portion 22, thereby preventing the mounting groove 42 and the driving wheel 44 from colliding with the mounting cavity 24.

[0069] By rotating the knob 45, the knob 45 drives the two gear rings 41 to rotate synchronously under the restriction of the hinge shaft 43, and the gear ring 41 drives the two mounting cylinders 33 to rotate synchronously to achieve the purpose of switching the spring rods 36. It should be noted that the two gear rings 41 rotate synchronously and in opposite directions. Therefore, the order of installing the spring rods 36 in the two mounting holes 34 also needs to be opposite 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 rods 36 to meet the bending operation requirements of plates with different surface thicknesses.

[0070] Furthermore, a knob 45 is sleeved on the hinge shaft 43 , and by turning the knob 45 , the driving wheel 44 can be driven to rotate through the hinge shaft 43 , thereby preventing staff from directly contacting the driving wheel 44 .

[0071] In order to enable the device 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 connected between the mounting cavity 24 and the fitting portion 22. Preferably, two locking mechanisms 50 are provided and are symmetrically arranged. The locking mechanism 50 includes a mounting seat 51 mounted on the fitting portion 22 and a connecting shaft 56 mounted on the mounting cavity 24. An annular groove 52 is installed on the mounting seat 51. A rotating disk 53 is rotatably embedded in the annular groove 52. A connecting rod 55 is rotatably provided on the rotating disk 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 portion 58. A latch 592 is provided through the middle of the sliding cavity 591. The outer diameter of the inner end of the latch 592 is the same as the inner diameter of the insertion hole 57. A handle 593 is provided on the outer end of the latch 592.

[0073] When the progressive flexible pressurization is normally performed, the bending knife 13 drives the engaging portion 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 under the restriction of the annular groove 52. The turntable 53 is installed with a fixing part 59 through the rotating part 58. The annular groove 52 is provided with two sockets 57 that cooperate with the fixing part 59. Depending on the material to be processed, when the spring rod 36 is in a natural state and has not been deformed, the fixing part 59 is inserted into the socket 57 to lock the turntable 53 so that the turntable 53 cannot rotate. At this time, the position of the engaging portion 22 and the mounting cavity 24 is fixed. When bending, the spring rod 36 is no longer squeezed by the push rod 37 and deformed. At this time, the bending knife 13 cooperates with the base 12 to rigidly extrude the plate under the push of the press 11. The pressure of the rigid extrusion is uniform, which is suitable for processing components in the meter box that have high requirements on the plastic properties of the material.

[0074] Working principle:

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

[0076] Continuously pressing down the bending blade 13, the sheet material begins to deform and generates a reaction force, pushing the female clamp 21 and the sub-clamp 23 upward, and the female clamp 21 pushes the fitting portion 22 to slide in the installation cavity 24. The ejector rod 37 passes through the through hole 221 on the fitting portion 22 and abuts against the abutment portion 364 on the top of the movable rod 363 of the spring rod 36. The ejector rod 37 pushes the movable rod 363 through the abutment portion 364, and cooperates with the guide rod 362 to squeeze the spring 365. The spring 365 absorbs part of the impact force through elastic deformation, converting the rigid extrusion into progressive flexible pressurization.

[0077] After the plate is bent, the press 11 pulls the bending knife 13 to reset. At this time, the spring 365 recovers its deformation and pushes the bending knife 13 to return to its original position smoothly.

[0078] When the spring rod 36 installed in the positioning sleeve 35 needs to be replaced, the spring rod 36 to be replaced is rotated to a coaxial position with the inspection port 222 at the bottom of the fitting portion 22. By rotating the gripping portion 366 at the bottom of the mounting portion 361 of the spring rod 36, the engagement between the threaded portion 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 of different stiffness, the knob 45 is turned. The knob 45, constrained by the hinge shaft 43, drives the driving wheel 44 to rotate. The driving wheel 44 engages the toothed rings 41 mounted on the surfaces of the two mounting tubes 33, causing the two toothed rings 41 to rotate synchronously in opposite directions. This in turn drives the two mounting tubes 33 to rotate synchronously, switching between spring rods 36 of different stiffness. Note that the order in which the spring rods 36 are installed in the two mounting holes 34 must be opposite to ensure that the stiffness of the spring rods 36 on both sides is the same after adjustment.

[0080] During normal progressive flexible pressurization, the bending blade 13 drives the fitting portion 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 rotary disk 53 to perform circular motion in the annular groove 52;

[0081] Depending on the material to be processed, when it is necessary to switch the processing mode, when the spring rod 36 is in a natural state and has not been deformed, the inner end of the pin 592 of the fixing part 59 is inserted into the socket 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 interlocking portion 22 and the mounting cavity 24 are fixed. When bending, the spring rod 36 is no longer squeezed by the push rod 37 and deformed. The bending knife 13 cooperates with the base 12 to rigidly extrude the plate under the push of the pressing machine 11.

[0082] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited to this. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes to a meter box plate folding device and its inventive concept according to the technology of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A plate folding device for an electric meter box, comprising a plate folding machine body (10), wherein the plate folding machine body (10) comprises a pressing machine (11) and a base (12) mounted below the pressing machine (11) for placing the plate, characterized in that: The press (11) is provided with a bending knife (13) matched with the base (12) via a clamping mechanism (20), the clamping mechanism (20) comprising a mounting cavity (24) mounted on the press (11), a fitting portion (22) being movably nested in the mounting cavity (24), a female clamp (21) being mounted at the bottom of the fitting portion (22), and the female clamp (21) cooperating with the sub-clamp (23) to clamp and fix the bending knife (13); A buffer mechanism (30) is installed on the fitting portion (22). The buffer mechanism (30) includes two lower chambers (31) symmetrically provided on the fitting portion (22). A mounting cylinder (33) is rotatably provided in each of the lower chambers (31). Spring rods (36) of different stiffnesses are respectively installed in a plurality of mounting holes (34) provided around the mounting cylinder (33). The spring rods (36) of different stiffnesses are switched by rotating the mounting cylinder (33). In addition, a push rod (37) is installed inside the installation cavity (24), and the push rod (37) is coaxial with the through hole (221) opened at the top of the interlocking portion (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), thereby converting the rigid extrusion of the press (11) into progressive flexible pressure.

2. The electric meter box plate folding device according to claim 1, characterized in that: A positioning sleeve (35) is embedded in the mounting hole (34), a clamping groove (341) is provided on the inner wall of the mounting hole (34), a clamping strip (351) is provided on the positioning sleeve (35) and is engaged with the clamping groove (341), and the positioning sleeve (35) fixes the spring rod (36) through a threaded groove (352) provided at the bottom end of the inner wall.

3. The electric meter box plate folding device according to claim 2, characterized in that: The spring rod (36) includes a mounting portion (361) embedded in the positioning sleeve (35), and a threaded portion (367) is provided on the surface of the mounting portion (361) and meshes with the threaded groove (352). A guide rod (362) is provided in the middle of the mounting portion (361), a movable rod (363) is slidably embedded on the surface of the guide rod (362), a spring (365) is wound around the surface of the guide rod (362), and both ends of the spring (365) are respectively pressed against the movable rod (363) and the mounting portion (361); The top of the movable rod (363) is provided with an abutment portion (364) that engages with the top rod (37).

4. The electric meter box plate folding device according to claim 3, characterized in that: The bottom of the mounting portion (361) is provided with a gripping portion (366), and the bottom of the mounting cylinder (33) is provided with a countersunk hole having the same thickness as the gripping portion (366). After the spring rod (36) is installed, the gripping portion (366) is embedded in the countersunk hole. An inspection opening (222) is provided at the bottom of the engaging portion (22).

5. The electric meter box plate folding 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) provided on the engaging portion (22). A hinge shaft (43) is rotatably embedded in the mounting groove (42). A driving wheel (44) is mounted on the hinge shaft (43) and meshes with a gear ring (41) mounted on the surface of the two mounting cylinders (33).

6. The electric meter box plate folding device according to claim 5, characterized in that: An adapting groove (46) is provided on the installation cavity (24), and the depth of the adapting groove (46) is the same as the maximum distance of reverse movement of the engaging portion (22).

7. The electric meter box plate folding device according to claim 6, characterized in that: At least one locking mechanism (50) is connected between the mounting cavity (24) and the engaging portion (22), and the locking mechanism (50) comprises a mounting seat (51) mounted on the engaging portion (22) and a connecting shaft (56) mounted on the mounting cavity (24); An annular groove (52) is installed on the mounting seat (51), a turntable (53) is rotatably embedded in the annular groove (52), a connecting rod (55) is rotatably provided on the turntable (53) via a mounting shaft (54), and a connecting shaft (56) is rotatably connected to the end of the connecting rod (55).

8. The electric meter box plate folding device according to claim 7, characterized in that: The rotating disk (53) is mounted with a fixing member (59) via a rotating portion (58), and two insertion holes (57) that cooperate with the fixing member (59) are provided on the annular groove (52).

9. The electric meter box plate folding device according to claim 8, characterized in that: The fixing member (59) includes a sliding cavity (591) provided on the rotating portion (58), a latch (592) is provided through the middle of the sliding cavity (591), an inner end of the latch (592) has an outer diameter that is the same as the inner diameter of the jack (57), and an outer end of the latch (592) is provided with a handle (593).

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