Positioning mechanism and punching device

Abstract

The utility model provides a positioning mechanism and a punching device, and relates to the technical field of machining. The positioning mechanism comprises a support, a positioning piece and an elastic piece, the support is provided with a positioning hole, the positioning piece penetrates through the support and can slide relative to the support in the axial direction of the positioning piece, the side, facing the positioning hole, of the positioning piece is provided with a bearing part corresponding to the positioning hole, and the bearing part is used for bearing a workpiece to be machined; the elastic piece is arranged outside the positioning piece in a sleeving mode and arranged between the support and the bearing part, so that the end, away from the bearing part, of the to-be-machined workpiece penetrates through the positioning hole and is used for positioning the to-be-machined workpiece. Under the elastic acting force of the elastic piece, the workpiece to be machined is fixed between the bearing part and the positioning hole, the effect of clamping and fixing the workpiece to be machined is achieved, clamping is convenient and easy, the labor intensity of operators is lowered, the workpiece to be machined can be positioned through the inner wall of the positioning hole, and the positioning accuracy is improved; and the situation that the to-be-machined workpiece is inclined due to improper clamping is reduced, so that the quality of finished products is improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of machining, and in particular to a positioning mechanism and a punching device. Background Art

[0002] The straight section of some existing workpieces is about 3mm to 8mm. Since the length of the straight section is relatively small, it does not meet the length of the workpiece clamped by the fixture. In order to solve this problem, the length of the straight section of the workpiece needs to be lengthened to 5mm to 10mm, and the increased length is used as the clamping position. After positioning and clamping, the wire cutting process is added to remove it and continue processing. The processing cycle is relatively long and the production cost is relatively high. At the same time, the workpiece is prone to skew during repeated clamping, affecting the quality of the finished product. Utility Model Content

[0003] The utility model provides a positioning mechanism and a punching device, which improve the quality of finished products and reduce production costs.

[0004] According to the first aspect of the utility model, a positioning mechanism is provided, including a bracket, a positioning member and an elastic member, the bracket being provided with a positioning hole; the positioning member is passed through the bracket and can slide relative to the bracket along the axial direction of the positioning member, and the positioning member is provided with a bearing portion on a side corresponding to the positioning hole facing the positioning hole, and the bearing portion is used to bear a workpiece to be processed; the elastic member is sleeved on the outside of the positioning member and is arranged between the bracket and the bearing portion, so that one end of the workpiece to be processed away from the bearing portion is passed through the positioning hole for positioning the workpiece to be processed.

[0005] In some embodiments, the positioning hole is a conical structure, the large end of the positioning hole is arranged toward the bearing portion, the large end and the small end of the positioning hole are connected by a guiding bevel, and the guiding bevel abuts against the bevel of the workpiece to be processed.

[0006] In some embodiments, the bracket includes a fixing frame and a guide member, the positioning hole is arranged on the fixing frame; the guide member passes through the fixing frame and is arranged corresponding to the positioning hole, the positioning member passes through the guide member and is slidably matched with the guide member, and the elastic member is arranged between the guide member and the bearing part.

[0007] In some embodiments, the guide member is detachably connected to the fixing frame, and the position of the guide member relative to the fixing frame is adjustable along the axial direction of the positioning member.

[0008] In some embodiments, a threaded hole is provided in the fixing frame, and a threaded portion is provided on an outer wall of the guide member, and the threaded portion is threadedly connected to the threaded hole.

[0009] In some embodiments, the fixing frame includes a first connecting plate, a second connecting plate, a connecting member and a support leg, the positioning hole is arranged on the first connecting plate; the second connecting plate is arranged parallel to and spaced apart from the first connecting plate, and the guide member passes through the second connecting plate; the connecting member is arranged between the first connecting plate and the second connecting plate; and the support leg is arranged on a side of the second connecting plate away from the first connecting plate.

[0010] In some embodiments, the bearing portion has a size greater than that of the positioning member, and is used to limit the positioning member; and / or the positioning member and the bearing portion are an integrally formed structure.

[0011] In some embodiments, a limiting portion is provided at one end of the positioning member away from the positioning hole.

[0012] According to the second aspect of the utility model, an embodiment of the utility model further provides a punching device, including a punching mechanism and the above-mentioned positioning mechanism, wherein the positioning mechanism is used to position the workpiece to be processed, and the punching mechanism is used to punch the positioned workpiece to be processed.

[0013] In some embodiments, a connecting hole is provided on a side of the bracket away from the positioning hole, the connecting hole and the positioning hole are connected to each other, and the punching mechanism extends into the connecting hole for punching the workpiece to be processed.

[0014] An embodiment of the utility model has the following advantages or beneficial effects:

[0015] The positioning mechanism and punching device provided by the embodiment of the utility model are that the workpiece to be processed is in direct contact with the bearing part, the bearing part is used to bear the workpiece to be processed, the side of the workpiece to be processed close to the positioning hole can penetrate into the positioning hole, and under the elastic force of the elastic member, the workpiece to be processed is fixed between the bearing part and the positioning hole, playing the role of clamping and fixing the workpiece to be processed, the clamping is convenient and simple, and the labor intensity of the operator is reduced, and the inner wall of the positioning hole can be used to position the workpiece to be processed, improve the positioning accuracy, and reduce the skewness of the workpiece to be processed caused by improper clamping, thereby improving the quality of the finished product. In this way, there is no need to add additional clamping positions and cut the clamping positions, which reduces the generation of additional processes, saves production time, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to better understand the utility model, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the utility model. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. By describing its example embodiments in detail with reference to the drawings, the above and other features and advantages of the utility model will become more apparent.

[0017] in:

[0018] Figure 1 What is shown is a structural schematic diagram of a positioning mechanism provided by an embodiment of the utility model;

[0019] Figure 2 The figure shows a cross-sectional view of a positioning mechanism provided by an embodiment of the utility model. Figure 1 ;

[0020] Figure 3 The structure of the positioning mechanism provided by an embodiment of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 4 The structure of the positioning mechanism provided by an embodiment of the utility model is shown in FIG. Figure 3 ;

[0022] Figure 5 Shown is a schematic diagram of a positioning mechanism showing a positioning hole and a connecting hole provided in an embodiment of the utility model.

[0023] The reference numerals are described as follows:

[0024] 1. Bracket; 2. Positioning piece; 3. Elastic piece;

[0025] 11. fixing frame; 111. first connecting plate; 1111. positioning hole; 1112. communicating hole; 112. second connecting plate; 113. connecting piece; 114. supporting foot;

[0026] 12. Guide parts;

[0027] 21. Load-bearing portion; 22. Limiting portion. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the example embodiments of the utility model to clearly and completely describe the technical solutions in the example embodiments of the utility model. The example embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the utility model. Therefore, it should be understood that various modifications and changes can be made to the example embodiments without departing from the scope of protection of the utility model.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.

[0030] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] Further, in the description of the present invention, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present invention. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", or "inner", "outer", but can also be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0033] This embodiment provides a punching device, which includes a punching mechanism and a positioning mechanism, wherein the positioning mechanism is used to position a workpiece to be processed, and the punching mechanism is used to punch holes in the workpiece to be processed after the workpiece has been positioned. The workpiece to be processed may be a blank structural part, and the blank structural part may be a square, cylindrical or conical structure, such as a pen head, a pen holder, etc.

[0034] The positioning mechanism can be used to realize the positioning of the workpiece to be processed, so as to ensure the positioning accuracy of the workpiece to be processed, so that the punching mechanism can ensure the accuracy of punching when punching the workpiece to be processed, thereby improving the quality of the finished product.

[0035] If the positioning mechanism adopts the method of clamping the workpiece to be processed for positioning, the length of the workpiece to be processed will be appropriately extended, and the extended part will be used as the clamping part. After the positioning is completed, the extended part needs to be cut. Using this method, the processing cycle time is relatively long and the production cost is relatively high. In addition, during this processing process, multiple clamping and positioning are required, which affects the quality of the finished product.

[0036] In order to solve this problem, this embodiment also provides a positioning mechanism, such as Figure 1-Figure 2 As shown, the positioning mechanism includes a bracket 1, a positioning member 2 and an elastic member 3. The bracket 1 is provided with a positioning hole 1111. The positioning member 2 is inserted through the bracket 1 and can slide relative to the bracket 1 along the axial direction of the positioning member 2. The positioning member 2 is provided with a bearing portion 21 on one side facing the positioning hole 1111 corresponding to the positioning hole 1111. The bearing portion 21 is used to bear the workpiece to be processed. The elastic member 3 can be a cylindrical spring. The elastic member 3 is sleeved on the outside of the positioning member 2 and is arranged between the bracket 1 and the bearing portion 21, so that the end of the workpiece to be processed away from the bearing portion 21 is inserted through the positioning hole 1111, which is used to position the workpiece to be processed.

[0037] When in use, the positioning member 2 is first moved away from the positioning hole 1111 so that there is a certain interval between the bearing portion 21 and the positioning hole 1111, which is used to place the workpiece to be processed, and the elastic member 3 located between the bearing portion 21 and the bracket 1 is in a compressed state; if the positioning member 2 is released, the compressed elastic member 3 has its own restoring force, and can push the workpiece to be processed to move toward the positioning hole 1111 through the bearing portion 21, so that the workpiece to be processed is accommodated in the positioning hole 1111, thereby realizing the positioning of the workpiece to be processed.

[0038] The side of the workpiece to be processed away from the positioning hole 1111 is in direct contact with the bearing part 21, and the side of the workpiece to be processed close to the positioning hole 1111 can penetrate into the positioning hole 1111. Under the elastic force of the elastic member 3, the workpiece to be processed is fixed between the bearing part 21 and the positioning hole 1111, which plays the role of clamping and fixing the workpiece to be processed. The clamping is convenient and simple, which reduces the labor intensity of the operator, and the inner wall of the positioning hole 1111 can position the workpiece to be processed, improve the positioning accuracy, and reduce the skewness of the workpiece to be processed caused by improper clamping, thereby improving the quality of the finished product. In this way, there is no need to add additional clamping positions and cut the clamping positions, which reduces the generation of additional processes, saves production time, and reduces production costs.

[0039] In one embodiment, Figure 1-Figure 4As shown, the bracket 1 includes a fixing frame 11, and the fixing frame 11 plays the role of overall support. The fixing frame 11 includes a first connecting plate 111, a second connecting plate 112, a connecting member 113 and a supporting leg 114. The first connecting plate 111 and the second connecting plate 112 can be selected as a flat plate structure, and the sizes of the two are approximately the same. The first connecting plate 111 and the second connecting plate 112 are arranged in parallel and spaced apart, and there is a certain space between the two. The space interval is used to facilitate the clamping of the workpiece to be processed and provide a certain operating space for the operator. The connecting member 113 is arranged between the first connecting plate 111 and the second connecting plate 112, so that the first connecting plate 111 and the second connecting plate 112 form an integral structure. The positioning hole 1111 is arranged on the first connecting plate 111, and the second connecting plate 112 is used to provide an installation position for the positioning member 2, so that the positioning member 2 and the positioning hole 1111 can correspond to each other.

[0040] In one embodiment, Figure 1-Figure 4 As shown, the fixing frame 11 of the bracket 1 also includes a support leg 114, which is arranged on the side of the second connecting plate 112 away from the first connecting plate 111, and the bottom of the support leg 114 is placed on the ground or a workbench to provide support. The support leg 114 can be a support rod, and the number of the support rods can be multiple, and the multiple support rods jointly support the second connecting plate 112. The support leg 114 can also be a rectangular parallelepiped structure, and the top surface of the support leg 114 is in contact with the second connecting plate 112. The contact area between the support leg 114 and the second connecting plate 112 is relatively large, thereby improving the support stability.

[0041] Among them, this embodiment does not limit the connection method between the support leg 114 and the second connecting plate 112. The support leg 114 and the second connecting plate 112 can be connected by bolts, or welding, or clamping, etc. As long as the fixation between the support leg 114 and the second connecting plate 112 can be achieved, it is within the protection scope of this embodiment.

[0042] In one embodiment, Figure 1-Figure 4 As shown, the bracket 1 also includes a guide member 12, which is inserted into the second connecting plate 112 of the fixing frame 11, and the guide member 12 is correspondingly arranged with the positioning hole 1111, and the positioning member 2 is inserted into the guide member 12 and slidably cooperates with the guide member 12.

[0043] When the positioning member 2 moves along the axial direction of the positioning member 2, the positioning member 2 and the guide member 12 slide together, and the guide member 12 guides the positioning member 2 to prevent the positioning member 2 from being offset during the movement and affecting the positioning accuracy of the workpiece to be processed. At the same time, the elastic member 3 is arranged between the guide member 12 and the bearing portion 21, and the guide member 12 also limits the elastic member 3. The elastic member 3 can be compressed between the side of the guide member 12 facing the bearing portion 21 and the bearing portion 21 to provide the required abutting force for the elastic member 3.

[0044] Specifically, along the axial direction of the positioning member 2, a center hole is provided in the guide member 12, and the contour shape of the center hole is adapted to the contour shape of the positioning member 2. For example, if the positioning member 2 is a cylindrical structure, the center hole is a round hole structure; if the positioning member 2 is a rectangular parallelepiped structure, the center hole is a square hole structure. The size of the center hole is slightly larger than the size of the positioning member 2, and the positioning member 2 and the center hole are clearance-matched. The positioning member 2 passes through the center hole and can slide along the inner wall of the center hole, thereby achieving a guiding effect.

[0045] Among them, along the axial direction of the positioning member 2, the guide member 12 penetrates the second connecting plate 112, and the top surface of the guide member 12 protrudes from the top surface of the second connecting plate 112, so that the length of the center hole is greater than the length of the second connecting plate 112, increasing the contact area between the positioning member 2 and the center hole, and further improving the guiding matching effect. The bottom surface of the guide member 12 protrudes from the bottom surface of the second connecting plate 112, so as to provide a certain operating space for the operator to pull out the positioning member 2.

[0046] In one embodiment, the guide member 12 and the second connecting plate 112 of the fixing frame 11 are fixed structures, and the guide member 12 and the second connecting plate 112 can be directly welded, or a fixing hole is provided on the second connecting plate 112, and the guide member 12 is inserted into the fixing hole and has an interference fit with the fixing hole. This embodiment does not limit the fixing method between the guide member 12 and the second connecting plate 112, and other methods can also be used.

[0047] In one embodiment, the guide member 12 is detachably connected to the fixing frame 11, that is, the guide member 12 and the second connecting plate 112 of the fixing frame 11 are not fixedly arranged, but are movably arranged. Since the guide member 12 is easily worn due to the repeated pulling of the positioning member 2, the guide member 12 is movably arranged relative to the second connecting plate 112, which facilitates the replacement of the guide member 12 and reduces the subsequent maintenance cost.

[0048] In one embodiment, along the axial direction of the positioning member 2, the position of the guide member 12 relative to the fixing frame 11 is adjustable. By adjusting the position of the guide member 12 relative to the second connecting plate 112, the initial state of the elastic member 3 can be adjusted, which can adjust the initial preload force of the elastic member 3 to a certain extent, thereby adjusting the thrust of the bearing portion 21 on the workpiece to be processed.

[0049] The fixing frame 11 is provided with a threaded hole, and the outer wall of the guide member 12 is provided with a threaded portion, which is threadedly connected to the threaded hole. The guide member 12 is specifically a screw rod, which can move toward or away from the positioning hole 1111 by screwing the screw rod, and has a simple structure and is easy to use.

[0050] During installation, the screw can be passed from the bottom surface to the top surface of the second connecting plate 112, and the nut of the screw is located on the side of the second connecting plate 112 away from the positioning hole 1111, that is, the nut of the screw is located below the bottom surface of the second connecting plate 112. The nut plays a role of limiting the position between the screw and the second connecting member 113 to a certain extent, thereby preventing the guide member 12 from falling off the second connecting member 113.

[0051] Of course, in some other embodiments, the guide member 12 can also pass through from the top surface to the bottom surface of the second connecting plate 112, and the nut of the screw is located on the side of the second connecting plate 112 facing the positioning hole 1111, that is, the nut of the screw is located above the top surface of the second connecting plate 112, and the elastic member 3 abuts against the nut of the screw to increase the contact area with the elastic member 3, thereby further improving the elastic effect of the elastic member 3.

[0052] In one embodiment, the size of the bearing portion 21 is larger than the size of the positioning member 2 , and is used to limit the positioning member 2 .

[0053] For example, the diameter of the bearing portion 21 is larger than the diameter of the positioning member 2, and the contact area between the bearing portion 21 and the workpiece to be processed is relatively large, thereby improving the supporting stability of the bearing portion 21 on the workpiece to be processed. At the same time, the bearing portion 21 can serve as a limiting structure arranged at the end of the positioning member 2 to prevent the positioning member 2 from escaping from the guide member 12 during the pulling process.

[0054] In one embodiment, the positioning member 2 and the bearing portion 21 are integrally formed. The integrally formed structure reduces the number of parts assembly steps, saves assembly time, and reduces production costs.

[0055] In one embodiment, a limiting portion 22 is disposed at one end of the positioning member 2 away from the positioning hole 1111 .

[0056] When the positioning member 2 moves along the axial direction of the positioning member 2 and toward the positioning hole 1111, the limiting portion 22 can be used to prevent the positioning member 2 from retracting into the center hole of the guide member 12. The size of the limiting portion 22 is larger than the size of the center hole, so that the limiting portion 22 can always be exposed outside the guide member 12. At the same time, the limiting portion 22 can also serve as a handle, making it convenient for the operator to pull the positioning member 2.

[0057] In this way, the top end of the positioning member 2 is limited by the bearing portion 21, and the bottom end of the positioning member 2 is limited by the limiting portion 22. Under the joint action of the bearing portion 21 and the limiting portion 22, the positioning member 2 is limited at both ends along the axial direction of the positioning member 2, thereby preventing the positioning member 2 from escaping from the guide member 12 during the pulling process.

[0058] In one embodiment, the number of positioning members 2, elastic members 3 and guide members 12 can be multiple, and multiple positioning members 2, multiple elastic members 3 and multiple guide members 12 are correspondingly arranged, which can simultaneously position multiple workpieces to be processed and improve production efficiency.

[0059] In one embodiment, Figure 5 As shown, the positioning hole 1111 is a conical structure, the large end of the positioning hole 1111 is arranged toward the bearing portion 21, the large end and the small end of the positioning hole 1111 are connected by a guiding inclined surface, and the guiding inclined surface abuts against the inclined surface of the workpiece to be processed.

[0060] The large end of the positioning hole 1111 is arranged toward the bearing portion 21, so that the workpiece to be processed can enter the positioning hole 1111 easily. The guiding inclined surface between the large end and the small end plays a guiding role, and the guiding inclined surface can contact and fit with the inclined surface of the workpiece to be processed, so as to achieve the centering effect of the positioning hole 1111 and the workpiece to be processed. Since multiple workpieces to be processed can be positioned through the positioning hole 1111, the positioning references of the multiple workpieces to be processed are the same, and the center alignment can still be achieved when multiple workpieces to be processed are clamped, thereby improving the positioning accuracy.

[0061] In one embodiment, Figure 5 As shown, a connecting hole 1112 is provided on the side of the bracket 1 away from the positioning hole 1111. The connecting hole 1112 and the positioning hole 1111 are connected to each other. The punching mechanism extends into the connecting hole 1112 for punching holes in the workpiece to be processed.

[0062] Among them, the punching mechanism can be selected as the electrode copper tube of the punching machine. After the workpiece to be processed is clamped into the positioning hole 1111, since there is a connecting hole 1112 just above the positioning hole 1111, the connecting hole 1112 is connected with the positioning hole 1111. The punching mechanism can enter the positioning hole 1111 through the connecting hole 1112 and contact with the workpiece to be processed. While the workpiece to be processed is positioned and fixed, the punching process is directly performed, and the positioning effect is good to ensure the quality of the finished product.

[0063] The working process of the positioning mechanism provided in this embodiment is as follows:

[0064] The operator holds the limiting portion 22 and pulls down the positioning member 2 in a direction away from the positioning hole 1111, so that there is a certain gap between the bearing portion 21 and the first connecting plate 111, so as to facilitate placing the workpiece to be processed on the bearing portion 21. In this process, the elastic member 3 between the bearing portion 21 and the guide member 12 is gradually compressed, and the elastic member 3 is in a compressed state.

[0065] Then slowly relax the positioning member 2. Under the restoring force of the compressed elastic member 3, the elastic member 3 pushes the workpiece to be processed toward the positioning hole 1111 through the bearing portion 21, so that the workpiece to be processed enters the positioning hole 1111. The inclined surface of the workpiece to be processed contacts the guiding inclined surface of the positioning hole 1111. Then the punching mechanism passes through the connecting hole 1112 and enters the positioning hole 1111 to perform punching in the workpiece to be processed.

[0066] It should be noted that the embodiments of the present invention are shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.

[0067] It should be understood that the utility model does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The utility model can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned deformation forms and modified forms fall within the scope of the utility model. It should be understood that the utility model disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the utility model. The embodiments described in this specification illustrate the best known methods for implementing the utility model and will enable those skilled in the art to utilize the utility model.

[0068] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variation, use, or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and example embodiments are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0069] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A positioning mechanism, characterized in that: include: A bracket, wherein the bracket is provided with a positioning hole; A positioning member is provided through the bracket and can slide relative to the bracket along the axial direction of the positioning member, and a bearing portion is provided on a side of the positioning member facing the positioning hole corresponding to the positioning hole, and the bearing portion is used to bear a workpiece to be processed; The elastic member is sleeved on the outside of the positioning member and is arranged between the bracket and the bearing part, so that one end of the workpiece to be processed away from the bearing part passes through the positioning hole, which is used for positioning the workpiece to be processed.

2. The positioning mechanism according to claim 1, characterized in that: The positioning hole is a conical structure, the large end of the positioning hole is arranged toward the bearing portion, the large end and the small end of the positioning hole are connected by a guiding inclined surface, and the guiding inclined surface abuts against the inclined surface of the workpiece to be processed.

3. The positioning mechanism according to claim 1, characterized in that: The support comprises: A fixing frame, wherein the positioning hole is arranged on the fixing frame; The guide member is passed through the fixing frame and is arranged corresponding to the positioning hole. The positioning member is passed through the guide member and is slidably matched with the guide member. The elastic member is arranged between the guide member and the bearing part.

4. The positioning mechanism according to claim 3, characterized in that: The guide member is detachably connected to the fixing frame, and the position of the guide member relative to the fixing frame is adjustable along the axial direction of the positioning member.

5. The positioning mechanism according to claim 4, characterized in that: A threaded hole is arranged in the fixing frame, and a threaded portion is arranged on the outer wall of the guide member, and the threaded portion is threadedly connected to the threaded hole.

6. The positioning mechanism according to claim 3, characterized in that: The fixing frame comprises: A first connecting plate, wherein the positioning hole is arranged on the first connecting plate; A second connecting plate is arranged parallel to and spaced from the first connecting plate, and the guide member is passed through the second connecting plate; A connecting member, disposed between the first connecting plate and the second connecting plate; The support leg is arranged on a side of the second connecting plate away from the first connecting plate.

7. The positioning mechanism according to claim 1, characterized in that: The bearing portion has a size greater than that of the positioning member and is used for limiting the position of the positioning member; And / or, the positioning member and the bearing portion are an integrally formed structure.

8. The positioning mechanism according to claim 1, characterized in that: A limiting portion is provided at one end of the positioning member away from the positioning hole.

9. A punching device, characterized in that: It comprises a punching mechanism and the positioning mechanism described in any one of claims 1 to 8, wherein the positioning mechanism is used to position the workpiece to be processed, and the punching mechanism is used to punch holes in the positioned workpiece to be processed.

10. The punching device according to claim 9, characterized in that: A connecting hole is arranged on one side of the bracket away from the positioning hole. The connecting hole and the positioning hole are connected to each other. The punching mechanism extends into the connecting hole and is used for punching the workpiece to be processed.

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