Side punching die for motor shell

Abstract

The utility model relates to a motor shell side punching die which comprises an upper die and a lower die, the motor shell side punching die is simple in structure and ingenious in design, a motor shell is horizontally placed in the middle of an installation base, preliminary positioning is conducted on the motor shell, and follow-up machining errors are reduced. When the upper die and the lower die are closed, the motor shell is fixedly pressed and fixed to the protruding column through the pressing block, it is guaranteed that the motor shell is not prone to displacement when punching is conducted on the shell side of the motor shell, and the multiple punches abut against the multiple corresponding punching needle assemblies at the same time so as to drive the multiple punching needle assemblies to conduct punching operation on corresponding preset holes in the side wall of the motor shell at the same time. A plurality of holes in the motor shell can be quickly punched at one time, and the working efficiency is high; when the die is opened, the punch pin assembly loses the acting force applied by the punch, and the elastic reset piece drives the punch pin assembly to slide and reset in the movable groove, so that the punch pin assembly is automatically separated from the motor shell, the punching operation of the next motor shell is facilitated, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of punching dies, and more specifically, to a side punching die for a motor housing. Background Art

[0002] The die used for punching holes is called a punching die, which is a special tool for machining required punching holes on the side wall of a motor housing.

[0003] There is a popular motor housing punching die on the market. For example, the patent number CN201821353939.6 discloses a motor housing rotary punching die. As Figure 1 shown, it includes an upper backing plate 1 and a lower die base 10. A upper clamping plate 2 is arranged at the bottom of the upper backing plate 1. A punching punch 3 is arranged at the center below the upper clamping plate 2. On the center line of the top surface of the lower die base 10, a lower die punching edge 4 for the side-standing placement of the motor housing, a motor housing, a positioning insert 5 fixedly connected to the motor housing and fixing the motor housing on the lower die punching edge 4, a cylinder indexer 6 for controlling the rotation of the positioning insert 5, a cylinder indexer fixing seat 7 for fixedly placing the cylinder indexer 6, a cylinder 8, and a cylinder fixing seat 9 are arranged in sequence from left to right; A plurality of preset holes are circumferentially arranged on the side wall of the motor housing. When the positioning insert 5 fixes and installs the motor housing on the lower die punching edge 4, the punch 3 can correspond to any preset hole; The cylinder indexer 6 drives the motor housing to rotate by an angle every time it is punched through the positioning insert 5; This structure can only process one hole at a time. For the second hole, the cylinder indexer 6 needs to drive the motor housing to rotate another angle and then punch, and the side punching process of the motor housing can only be completed until all the holes are punched, which takes a long time and the overall punching efficiency of the motor side wall is too low. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a side punching die for a motor housing in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is: A side punching die for a motor housing includes an upper die and a lower die. Among them, an installation seat is arranged on the lower die; A groove is arranged in the middle of the installation seat; A plurality of movable grooves extending towards the groove and communicating with the groove are circumferentially arranged on the installation seat around the groove; A convex column for horizontally sleeving the motor housing is fixedly arranged in the groove; A punch needle assembly for punching the preset holes on the side wall of the motor housing is slidably arranged in the movable groove; A pressing block corresponding to the convex column and pressing and fixing the motor housing on the convex column is arranged on the upper die, and a plurality of punches corresponding to the punch needle assembly one by one and driving the punch needle assembly to move towards the convex column direction are arranged; An elastic resetting member for driving the punch needle assembly to reset and separating the punch needle assembly from the motor housing is also arranged on the installation seat;

[0006] For the side punching die of the motor housing of the present utility model, wherein, the punch needle assembly includes a slider slidably connected to the moving groove, and a needle body fixedly connected to the slider; the needle body is horizontally arranged along the length direction of the slider; one end of the needle body facing the convex column protrudes from the side wall of the slider and extends towards the convex column;

[0007] For the side punching die of the motor housing of the present utility model, wherein, on the upper side of the end of the slider away from the convex column, there is a first inclined surface that slopes downward and towards the elastic resetting member; at the lower end of the punch, there is a second inclined surface adapted to and fittingly cooperating with the first inclined surface;

[0008] For the side punching die of the motor housing of the present utility model, wherein, the needle body horizontally penetrates through the slider; one end of the needle body away from the convex column is a third inclined surface parallel to the first inclined surface; the third inclined surface is not higher than the first inclined surface;

[0009] For the side punching die of the motor housing of the present utility model, wherein, the moving groove is tapered from inside to outside, and the width of the end of the moving groove away from the convex column is smaller than the width of the slider;

[0010] For the side punching die of the motor housing of the present utility model, wherein, the outer contour of the convex column is adapted to the inner cavity of the motor housing; on the side wall of the convex column, there are a plurality of cutting edges circumferentially arranged corresponding to the preset holes one by one and cooperating with the corresponding punch needle assemblies to punch the preset holes on the motor housing;

[0011] For the side punching die of the motor housing of the present utility model, wherein, a receiving groove is longitudinally provided on the pressing block; in the receiving groove, there is an anti - sticking material assembly for preventing the motor housing from adhering to the lower surface of the pressing block;

[0012] For the side punching die of the motor housing of the present utility model, wherein, there is a flanging on the side wall of the motor housing that turns outward; around the periphery of the convex column, the lower die is provided with a plurality of stripping assemblies corresponding to the flanging and separating the motor housing outward from the surface of the convex column;

[0013] For the side punching die of the motor housing of the present utility model, wherein, the elastic resetting member includes a connecting rod slidably connected to the mounting seat, and a reset spring sleeved on the connecting rod; one end of the connecting rod is fixedly connected to the slider, and the other end abuts against one end of the reset spring; the reset spring provides an elastic force to the connecting rod and the mounting seat;

[0014] For the side punching die of the motor housing of the present utility model, a plurality of guiding grooves corresponding to and communicating with the moving grooves one by one are circumferentially arranged on the outer edge of the mounting base; one end of the connecting rod passes through the guiding groove and is fixed to the sliding block, and the other end is an extending portion extending outward to the outer surface of the mounting base; the return spring is located outside the mounting base and sleeved on the extending portion; a limiting portion for preventing the return spring from detaching from the connecting rod is further provided on the end of the extending portion.

[0015] The beneficial effects of the present utility model are as follows: The side punching die of the motor housing has a simple structure and ingenious design. By horizontally placing the motor housing in the middle of the mounting base, preliminary positioning of the motor housing is carried out to reduce subsequent processing errors; when the upper die and the lower die are closed, the pressing block fixes and presses the motor housing on the convex column to ensure that the motor housing will not be easily displaced during side punching of its housing. Multiple punches simultaneously abut against the corresponding multiple punch needle assemblies and then drive the multiple punch needle assemblies to simultaneously punch the corresponding preset holes on the side wall of the motor housing, so that multiple holes on the motor housing can be quickly punched out at one time, with high working efficiency; when the die is opened, the punch needle assembly loses the acting force given by the punch, and the elastic resetting member drives the punch needle assembly to slide and reset in the moving groove, so that the punch needle assembly is automatically separated from the motor housing, facilitating the punching operation of the next motor housing, and is convenient to use. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will further explain the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0017] Figure 1 is a structural schematic diagram of the motor housing rotary punching die in the background art;

[0018] Figure 2 is a structural schematic diagram of the side punching die of the motor housing in the preferred embodiment of the present utility model Figure 1 (open die state diagram of the upper die and the lower die);

[0019] Figure 3 is a structural schematic diagram of the side punching die of the motor housing in the preferred embodiment of the present utility model Figure 2 (closed die state diagram of the upper die and the lower die);

[0020] Figure 4 is Figure 2 a top view of the lower die in the middle. Detailed Embodiments

[0021] In the description, claims, and drawings of the present invention, terms such as "first", "second", "third", and "fourth" are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0022] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0023] "Plurality" means two or more. "And / or" describes the associated relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0024] Moreover, terms indicating directions such as "upper", "lower", "front", "rear", "left", "right", "upper end", "lower end", "longitudinal", etc. are all referenced based on the attitude position of the device or equipment described in this solution during normal use.

[0025] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] A side punching die for a motor housing according to a preferred embodiment of the present utility model, as Figure 2-4As shown in the figure, it includes an upper die 10 and a lower die 20. Among them, a mounting seat 21 is provided on the lower die 20; a groove 22 is provided in the middle of the upper surface of the mounting seat 21; a plurality of movable grooves 23 extending towards the groove 22 and communicating with the groove 22 are circumferentially arranged around the groove 22 on the mounting seat 21; the movable groove 23 is arranged in a strip shape, and a plurality of movable grooves 23 are sequentially arranged with the center of the groove 22 as the center of the circle; a convex column 24 for horizontally sleeving the motor housing 01 is fixedly arranged in the groove 22; a plurality of preset holes 02 corresponding to any one of the movable grooves 23 are arranged on the side wall of the motor housing 01; in one embodiment, the outer contour of the convex column 24 is adapted to the inner cavity of the motor housing 01; the height of the convex column 24 is not less than the height of the motor housing 01, the preset holes on the side wall of the motor housing 01 are located on one side of the convex column 24, and a plurality of knife edges 241 corresponding to the preset holes 02 one by one and cooperating with the corresponding punch assembly 25 to punch the preset holes 02 on the motor housing 01 are circumferentially arranged on the side wall of the convex column 24; in another embodiment, the height of the convex column 24 can also be set to be lower than the height of the motor housing 01, and a plurality of preset holes on the side wall of the motor housing 01 are all located above the convex column 24, and the inside of the motor housing is hollow to facilitate subsequent punching; both of the above two situations belong to the protection scope of the present utility model. A punch assembly 25 for punching the preset holes 02 is slidably arranged in the movable groove 23; a pressing block 11 corresponding to the convex column 24 and fixedly pressing the motor housing 01 on the convex column 24 is provided on the upper die 10, and a plurality of punches 12 corresponding to the punch assembly 25 one by one and driving the punch assembly 25 to move towards the convex column 24 are provided; an elastic resetting member 26 for driving the punch assembly 25 to reset to separate the punch assembly 25 from the motor housing 01 is further provided on the mounting seat 21.

[0027] The side punching die of the motor housing has a simple structure and ingenious design. By horizontally placing the motor housing in the middle of the mounting seat, the motor housing is preliminarily positioned, reducing subsequent processing errors; when the upper die and the lower die are closed, the pressing block fixedly presses the motor housing on the convex column, ensuring that the motor housing will not be easily displaced during side punching of its housing. A plurality of punches simultaneously abut against the corresponding plurality of punch assemblies and then drive the plurality of punch assemblies to simultaneously punch the corresponding preset holes on the side wall of the motor housing, so that a plurality of holes on the motor housing can be quickly punched out at one time, with high working efficiency; when the die is opened, the punch assembly loses the force given by the punch, and the elastic resetting member drives the punch assembly to slide and reset in the movable groove, so that the punch assembly is automatically separated from the motor housing, facilitating the punching operation of the next motor housing and being convenient to use.

[0028] In one embodiment, the punch needle assembly 25 includes a slider 251 slidably connected to the movable slot 23 and a needle body 252 fixedly connected to the slider 251. The slider 251 can drive the needle body 252 to approach or move away from the convex post 24 along the movable slot 23, with flexible movement. The needle body 252 is horizontally arranged along the length direction of the slider 251, which not only helps to reduce the degree of deformation of the needle body, but also can effectively maintain the dimensional accuracy and shape accuracy of the needle body 252, resulting in low wear of the needle body. One end of the needle body 252 facing the convex post 24 protrudes from the side wall of the slider 251 and extends towards the convex post 24, facilitating subsequent rapid punching of the motor housing.

[0029] Further, on the upper side of the end of the slider 251 away from the convex post 24, there is a first inclined surface 2511 that slopes downward and towards the elastic reset member 26, and this first inclined surface 2511 is the pressure-receiving surface. At the lower end of the punch 12, there is a second inclined surface 121 that is adapted to and cooperates with the first inclined surface 2511, and the second inclined surface 121 is the pressure-applying surface. When the upper die and the lower die are closed, the second inclined surface of the punch 12 transfers the pressure to the first inclined surface. And because the first inclined surface slopes downward and towards the elastic reset member 26, when the punch 12 presses down, it can make the slider 251 automatically move towards the convex post 24 direction, facilitating stamping.

[0030] Further, the needle body 252 transversely penetrates the slider 251, increasing the contact area between the needle body 252 and the slider 251. The greater the friction force, the firmer and more stable their connection. One end of the needle body 252 away from the convex post 24 is a third inclined surface 2521 parallel to the first inclined surface 2511. The third inclined surface 2521 is not higher than the first inclined surface 2511. When the third inclined surface 2521 coincides with the first inclined surface 2511, the punch can press on both the slider 251 and the needle body 252 simultaneously, making the overall force on the punch needle assembly 25 more uniform and the structure more stable.

[0031] Further, the movable slot 23 is tapered from the inside outwards, and the width of the end of the movable slot 23 away from the convex post 24 is smaller than the width of the slider 251. The slider 251 will not easily disengage from the movable slot 23 outwardly, and the structure is stable.

[0032] Further, a receiving groove is longitudinally provided on the pressing block 11. An anti-sticking material component 13 for preventing the motor housing 01 from adhering to the lower surface of the pressing block 11 is provided in the receiving groove. The anti-sticking material component 13 can adopt the combined structure of a spring and a thimble in the prior art, and the structure is simple.

[0033] Further, a turned-out eaves edge 03 is provided on the side wall of the motor housing 01; the eaves edge 03 is perpendicular to the side wall of the motor housing 01, and a plurality of stripping components 27 corresponding to the eaves edge 03 and separating the motor housing 01 from the surface of the convex column 24 are circumferentially arranged around the convex column 24 of the lower die 20. The stripping component 27 can adopt the combined structure of a spring and a thimble in the prior art, with a simple structure and a small volume.

[0034] Further, the elastic reset member 26 includes a connecting rod 261 slidably connected to the mounting seat 21 and a reset spring 262 sleeved on the connecting rod 261; one end of the connecting rod 261 is fixedly connected to the slider 251, and the other end abuts against one end of the reset spring 262; the reset spring 262 provides an elastic force to the connecting rod 261 and the mounting seat 21; through the elastic reset member 26, the punching needle assembly 25 can be automatically reset, facilitating subsequent punching operations on the side wall of another motor housing; in an embodiment, a plurality of guide grooves 28 corresponding to and communicating with the moving grooves 23 are circumferentially provided on the outer edge of the mounting seat 21; one end of the connecting rod 261 passes through the guide groove 28 and is fixedly connected to the slider 251, and the other end is an extending portion extending outward to the outer surface of the mounting seat 21; the reset spring 262 is located outside the mounting seat 21 and sleeved on the extending portion; a limiting portion 29 for preventing the reset spring 262 from detaching from the connecting rod 261 is further provided at the end of the extending portion; optionally, the elastic reset member 26 can also be arranged in the moving groove.

[0035] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A punching die for the side of a motor housing, comprising an upper die and a lower die, characterized in that An installation seat is provided on the lower die; a groove is provided in the middle of the installation seat; a plurality of movable grooves extending towards the groove and communicating with the groove are circumferentially arranged on the installation seat around the groove; a convex column for horizontally sleeving the motor housing is fixedly arranged in the groove; a punch needle assembly for punching a preset hole on the side wall of the motor housing is slidably arranged in the movable groove; a pressing block corresponding to the convex column and fixedly pressing the motor housing on the convex column is provided on the upper die, and a plurality of punches corresponding to the punch needle assembly one by one and driving the punch needle assembly to move towards the convex column are provided; an elastic resetting member for driving the punch needle assembly to reset to separate the punch needle assembly from the motor housing is further provided on the installation seat.

2. The side punching die for the motor housing according to claim 1, characterized in that, The punch needle assembly includes a slider slidably connected to the movable groove and a needle body fixedly connected to the slider; the needle body is horizontally arranged along the length direction of the slider; one end of the needle body facing the convex column protrudes from the side wall of the slider and extends towards the convex column.

3. The motor housing side punching die according to claim 2, characterized in that, A first inclined surface that is downward and inclined towards the elastic resetting member is provided on the upper side of the end of the slider away from the convex column; a second inclined surface adapted to and fittingly cooperating with the first inclined surface is provided at the lower end of the punch.

4. The motor housing side punching die according to claim 3, characterized in that, The needle body horizontally penetrates through the slider; one end of the needle body away from the convex column is a third inclined surface parallel to the first inclined surface; the third inclined surface is not higher than the first inclined surface.

5. The motor housing side punching die according to any one of claims 1-4, characterized in that The movable groove is tapered from the inside to the outside, and the width of the end of the movable groove away from the convex column is smaller than the width of the slider.

6. The motor housing side punching die according to claim 1, wherein The outer contour of the convex column is adapted to the inner cavity of the motor housing; a plurality of cutting edges corresponding to the preset holes one by one and cooperating with the corresponding punch needle assemblies to punch the preset holes on the motor housing are circumferentially arranged on the side wall of the convex column.

7. The motor housing side punching die according to any one of claims 1-4 and 6, characterized in that, A receiving groove is longitudinally provided on the pressing block; an anti-sticking material assembly for preventing the motor housing from adhering to the lower surface of the pressing block is provided in the receiving groove.

8. The side punching die for the motor housing according to claim 7, wherein, A flanging is provided on the side wall of the motor housing and folded outwards; a plurality of stripping assemblies corresponding to the flanging and separating the motor housing from the surface of the convex column are circumferentially arranged around the convex column on the lower die.

9. The motor housing side punching die according to claim 2, characterized in that, The elastic resetting member includes a connecting rod slidably connected to the installation seat and a reset spring sleeved on the connecting rod; one end of the connecting rod is fixedly connected to the slider, and the other end abuts against one end of the reset spring; the reset spring provides an elastic force to the connecting rod and the installation seat.

10. The motor housing side punching die according to claim 9, wherein, A plurality of guiding grooves corresponding to the movable grooves one by one and communicating with the movable grooves are circumferentially provided on the outer edge of the installation seat; one end of the connecting rod passes through the guiding groove and is fixedly connected to the slider, and the other end is an extending portion extending outwards to the outer surface of the installation seat; the reset spring is located outside the installation seat and sleeved on the extending portion; a limiting portion for preventing the reset spring from detaching from the connecting rod is further provided on the end of the extending portion.

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