Electric appliance shell nut punch forming device

Abstract

The utility model provides an electric appliance shell nut punch forming device which comprises a working table, a clamping template and a punching assembly, the clamping template and the punching assembly are arranged on the working table, the working table comprises a supporting plate and supporting legs, the middle of the supporting plate is provided with a vertically-through hollow-out part, the clamping template comprises an upper template and a lower template, and the upper surface of the lower template is provided with a groove. A round hole is formed in the middle of the upper die plate, and the stamping assembly corresponds to the round hole in position. According to the utility model, the traditional pull riveting processing is converted into punching riveting processing, so that the riveting processing can be accurately completed, manual operation is not needed, manpower and material resources are saved, and the processing precision is also improved; the punch extrudes the outer side of the rod portion of the riveting nut in a mode similar to pull riveting, the overall structure of the riveting nut cannot be damaged, the strength of the riveting nut is maintained, and the fixing effect is improved. The punching head can be arranged at each position to be machined on a workpiece, so that all machining is completed through one-time punching, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric appliance parts processing technical field especially relates to a electric appliance shell nut punch forming device. BACKGROUND

[0002] Modern life is closely related with various electric appliances, and electric appliances refer to all electric appliances. From the perspective of ordinary people, it mainly refers to some electric appliances commonly used in families to provide convenience for life, such as TV sets, air conditioners, refrigerators, washing machines and various small household appliances.

[0003] The current household appliance usually includes a shell and internal electric appliance components, and the shell is usually made of metal plate. In the shell production process, a large number of holes are inevitably processed to fix the internal electric appliance components, and screws and nuts are matched to realize stable connection and fixation. Generally, the electric appliance shell plate is connected and processed by riveting, that is, a round hole is drilled on the workpiece first, and then a rivet nut is placed, and the nut is pulled by a rivet gun to complete the fixation.

[0004] However, the riveting method needs to place the rivet nut from top to bottom into the round hole, and then the worker holds the rivet gun to process the rivet nut one by one. When the number of rivet nuts to be processed on a single workpiece is too large, the worker needs to hold the heavy rivet gun repeatedly, which is time-consuming and laborious, and is prone to human error and mistakes. Therefore, a new processing device is needed to replace the traditional rivet connection processing. CONTENT OF THE UTILITY MODEL

[0005] In view of the problems in the prior art, the utility model provides a electric appliance shell nut punch forming device, which solves the problems of time-consuming and laborious work, and is prone to human error and mistakes.

[0006] According to the utility model, a electric appliance shell nut punch forming device, including workbench and setting up on the workbench clamping template, punch assembly, the workbench includes horizontal support plate and setting up in support plate bottom support leg, the support plate plate middle part is provided with up and down through hollow part, the clamping template includes upper die and lower die, the upper die and lower die up and down corresponding hollow part position setting, the size of lower die is less than hollow part makes it can pass through hollow part and abuts to support plate upper surface, the middle part of lower die upper surface is provided with the recess for placing nut, the upper die middle part is equipped with the round hole for the nut to pass through, the recess and round hole up and down corresponding, the punch assembly corresponds the position setting of round hole.

[0007] Further, the bottom of the lower die plate is provided with a connecting plate in parallel, a plurality of connecting rods are arranged between the connecting plate and the lower die plate, and the size of the connecting plate is larger than the hollow part.

[0008] Further, the size of the groove of the lower die plate is just corresponding to the larger end of the nut diameter, and the size of the circular hole on the upper die plate is larger than the smaller end of the nut diameter.

[0009] Further, the punch includes a punch, the bottom of the punch is annular structure, the outer diameter corresponds to the size of the circular hole, and the inner diameter corresponds to the minimum size of the smaller end of the nut diameter.

[0010] Further, the support plate is provided with a support at a position corresponding to the upper part of the hollow part, the support is provided with a second telescopic rod at the bottom, and the punch is fixed at the bottom of the second telescopic rod.

[0011] Further, the bottom of the second telescopic rod is connected with a horizontal transmission plate, the upper die plate is arranged below the transmission plate in parallel, and the upper die plate is elastically connected with the transmission plate, the punch is fixed at the bottom of the transmission plate, and the bottom of the punch is coaxially arranged through the circular hole.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1, the utility model discloses a traditional pull rivet processing is converted into punch riveting processing, will utilize the clamping template on the workbench to hold up and down fixed workpiece, and through the lower die plate, riveting nut is arranged in advance in the position to be processed, and the processing position of riveting nut is positioned through the upper die plate, so that the punch corresponding to the riveting nut falls down, and the riveting processing is accurately completed, manual operation is not needed, manpower and material resources are saved, and the processing precision is improved.

[0014] 2, the utility model punches include a punch, the bottom of the punch is annular structure, the outer diameter corresponds to the size of the circular hole, and the inner diameter corresponds to the minimum size of the smaller end of the nut diameter, that is, the punch does not directly punch the rod part end of the riveting nut, but is arranged outside the rod part, and the riveting nut is extruded on the outside of the rod part in a mode similar to pull riveting, so that the riveting nut is deformed and protrudes outward to realize fixation, so that the overall structure of the riveting nut is not damaged, the strength is maintained, and the fixing effect is improved.

[0015] 3, the utility model can set the punch for each position to be processed on the workpiece respectively, so that all the processing is completed by one time of punching, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the embodiment of the utility model.

[0017] Figure 2 This is a schematic diagram showing the connection between the clamping template and the workpiece in an embodiment of this utility model.

[0018] The dotted lines in the diagram represent the obscured parts.

[0019] In the above attached figures: 1. Workbench; 2. Lower template; 3. First telescopic rod; 4. Upper template; 5. Second telescopic rod; 6. Adapter plate; 7. Punch; 8. Spring; 9. Workpiece; 11. Support plate; 12. Support foot; 21. Groove; 31. Connecting plate; 32. Connecting rod; 41. Round hole; 91. Nut; 111. Hollowed-out part; 112. Bracket; 113. Limiting block. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1 As shown in the figure, this utility model embodiment proposes a stamping forming device for an electrical appliance housing nut 91, including a worktable 1 and a clamping template and stamping components disposed on the worktable 1. In this embodiment, the worktable 1 includes a horizontal support plate 11 and support feet 12 disposed at the bottom of the support plate 11. The support feet 12 can be placed directly on the ground or on other table surfaces. It should be noted that in this embodiment, the surface of the support plate 11 is also provided with a limiting block 113, thereby restricting the workpiece 9 to a specified position.

[0022] like Figure 2 As shown, the support plate 11 has a through-hole 111 in the middle, the size of which is smaller than that of the workpiece 9, allowing the workpiece 9 to be positioned above the through-hole 111, while the edge of the workpiece 9 contacts the surface of the support plate 11 for support. The clamping template includes an upper template 4 and a lower template 2, which are positioned vertically corresponding to the through-hole 111. The lower template 2 is smaller than the through-hole 111, allowing it to pass through the through-hole 111 and abut against the upper surface of the support plate 11. The upper surface of the lower template 2 has a groove 21 in the middle for placing the nut 91, and the upper template 4 has a circular hole 41 in the middle for the nut 91 to pass through. The groove 21 and the circular hole 41 are vertically corresponding, and the stamping assembly is positioned corresponding to the location of the circular hole 41.

[0023] Preferably, the groove 21 of the lower template 2 corresponds exactly to the larger diameter end of the nut 91, and the circular hole 41 on the upper template 4 is larger than the smaller diameter end of the nut 91. In this way, the nut 91 can be stably placed inside the groove 21 with the smaller diameter end facing upwards, allowing the punch 7 to perform punching and riveting on the smaller diameter end.

[0024] In the specific scheme, the bottom of the lower die plate 2 is provided with a connecting plate 31 in parallel, a plurality of connecting rods 32 are arranged between the connecting plate 31 and the lower die plate 2, and the size of the connecting plate 31 is greater than that of the hollow part 111. A plurality of first telescopic rods 3 are fixed to the bottom surface of the support plate 11, the first telescopic rods 3 are arranged vertically, and the edges of the bottom connecting plate 31 are connected. That is, the first telescopic rods 3 can move the lower die plate 2 to a position away from the support plate 11, so as to facilitate the upward supplement of the nut 91.

[0025] In the embodiment, the stamping part includes a punch 7, the bottom of the punch 7 is annular, the outer diameter corresponds to the size of the circular hole 41, and the inner diameter corresponds to the minimum size of the smaller end of the nut 91. The support plate 11 is provided with a support 112 at a position above the hollow part 111, the second telescopic rod 5 is arranged at the bottom of the support 112, and the punch 7 is fixed to the bottom end of the second telescopic rod 5. The bottom of the second telescopic rod 5 is connected with a horizontal transmission plate, the upper die plate 4 is arranged below the transmission plate in parallel, and the upper die plate 4 is elastically connected with the transmission plate. In the embodiment, a spring 8 is used for connection. The punch 7 is fixed to the bottom end of the transmission plate, and the bottom of the punch 7 penetrates the circular hole 41 coaxially.

[0026] In the embodiment, the rivet nut 91 is used for processing, which has a larger diameter of the nut end and a smaller diameter of the screw end, and the diameter of the screw end is further reduced.

[0027] In use, the workpiece 9 is placed on the surface of the workbench 1, and is horizontally fixed by the limiting block 113, then the nut 91 is placed on the recess 21 in the middle of the lower die plate 2, the lower die plate 2 is driven to move upward by the first telescopic rod 3, so that the lower die plate 2 penetrates through the hollow part 111 and abuts to the bottom surface of the workpiece 9, at this time, the smaller screw end of the nut 91 penetrates through the processing hole on the workpiece 9 upward. Then the transmission plate, the punch 7 and the upper die plate 4 are driven to move downward by the first telescopic rod 3, the circular hole 41 of the upper die plate 4 is sleeved on the nut 91, so that the upper die plate 4 abuts to the upper surface of the workpiece 9, at this time, the spring 8 is compressed, and the fixing in the upward and downward directions is realized. Then the punch 7 is sleeved on the upper end of the nut 91, the punch 7 extrudes the outer wall of the nut 91, extrudes the outer side of the rod part of the rivet nut 91 in a manner similar to the rivet, so as to deform and protrude outward to realize the fixing. Finally, the lower die plate 2 is driven to move downward by the first telescopic rod 3, and the upper die plate 4 and the punch 7 are driven to move upward by the second telescopic rod 5, so as to take out the processed workpiece 9.

[0028] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit. Although the utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, which should be covered in the scope of the claims of the utility model.

Claims

1. A stamping and forming device for electrical appliance housing nuts, characterized in that: The utility model provides a press -in assembly and a clamping template, the workbench includes horizontal support plate and the support foot of setting in support plate bottom, the hollow part of going through up and down is arranged in the middle part of support plate board, the clamping template includes upper template and lower template, upper template and lower template are arranged correspondingly in the position of hollow part up and down, the size of lower template is less than hollow part and makes it can pass through hollow part and abuts to the upper surface of support plate, the recess for placing nut is arranged in the middle part of lower template upper surface, the round hole for the nut to pass through is arranged in the middle part of upper template, the recess and round hole correspond up and down, the press -in assembly is arranged in the position of corresponding round hole.

2. The apparatus for press forming of an electric appliance shell nut according to claim 1, wherein: The connecting plate is arranged in parallel at the bottom of the lower template, a plurality of connecting rods are arranged between the connecting plate and the lower template, and the size of the connecting plate is greater than that of the hollow part.

3. The apparatus for press forming of an electrical appliance shell nut according to claim 1, wherein: The size of the recess of the lower template is just corresponding to the diameter of the nut, and the size of the round hole on the upper template is greater than the diameter of the nut.

4. The apparatus for press forming of an electrical appliance shell nut according to claim 1, wherein: The punch includes a ring structure at the bottom, the outer diameter of which corresponds to the size of the round hole, and the inner diameter corresponds to the minimum size of the small end of the nut diameter.

5. The apparatus according to claim 4, wherein: the punch is formed in a shape of a circle; and the die is formed in a shape of a circle. 5 The support plate is provided with a bracket above the position corresponding to the hollow part, the second telescopic rod is arranged at the bottom of the bracket, and the punch is fixed to the bottom end of the second telescopic rod.

6. The apparatus according to claim 5, wherein the apparatus further comprises a punch for punching the metal plate to form the nut. The second telescopic rod is connected with a horizontal transmission plate at the bottom, the upper template is arranged below the transmission plate, and the upper template and the transmission plate are elastically connected, the punch is fixed to the bottom end of the transmission plate, and the bottom of the punch coaxially passes through the round hole.

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