Punch fixing structure and punch assembly having the same

Abstract

The present invention provides a punch fixing structure and a punch assembly having the same. The punch fixing structure according to the present invention comprises: a fixing portion, a mounting groove is provided on the fixing portion, and the mounting groove is used to install a blanking punch. The punch assembly according to the present invention comprises a punch fixing structure and a blanking punch, the punch fixing structure is the punch fixing structure mentioned above, and the punch fixing structure is connected to the blanking punch. The punch fixing structure of the present invention solves the problem of unstable blanking punch fixing method in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of punch fixing structures, and in particular to a punch fixing structure and a punch assembly having the same. Background Art

[0002] like Figure 1 and Figure 2 As shown, there are two main ways to fix the stator blanking punch 5 of the traditional dovetail buckle product: one is to position the upper clamp 4 and tighten the screw 3; the other is to position the positioning pin 6 and tighten the screw 3. Since the stator blanking punch 5 is relatively high, these two fixing methods cannot effectively ensure the verticality of the punch assembly, and there is more or less inclination. During the stamping process, the lateral force is applied, which easily causes the risk of the punch moving or even breaking the blade.

[0003] In addition, since the dovetail buckle products have small rounded corners, the small rounded corners of the punch are easily worn during stamping, and often require overall replacement and repair, which reduces the service life of the punch, increases the frequency of maintenance, and even affects the quality of the stamped products, and cannot guarantee stable and efficient production of the mold. Summary of the invention

[0004] The main purpose of the present invention is to provide a punch fixing structure and a punch assembly having the same, so as to solve the problem of unstable blanking punch fixing method in the prior art.

[0005] In order to achieve the above object, according to one aspect of the present invention, there is provided a punch fixing structure, comprising: a fixing portion, on which a mounting groove is provided, and the mounting groove is used to install the blanking punch.

[0006] Furthermore, the punch fixing structure also includes: a stopper portion, which is connected to the fixing portion and is used for limiting contact with the blanking punch.

[0007] Furthermore, the stopper is used to engage with the blanking punch.

[0008] Furthermore, the stopper portion is connected to the fixing portion by snapping, bonding or by a fastener.

[0009] Furthermore, the punch fixing structure also includes: a support portion, which is arranged in the mounting groove and clamped between the groove bottom of the mounting groove and the blanking punch.

[0010] Furthermore, the mounting groove includes a first groove section and a second groove section which are connected in sequence, and the fixing part includes: a first fixing section, the first fixing section has a first groove section, and the supporting part is arranged in the first groove section; a second fixing section, the second fixing section is connected to the first fixing section, the second fixing section has a second groove section, and the second groove section is used to install a blanking punch; wherein the second fixing section is arranged in the middle of the first fixing section.

[0011] Furthermore, the second fixing section is integrally formed with the first fixing section, and the second fixing section is a semi-cylinder.

[0012] Furthermore, the fixing portion includes: a first fixing section; a second fixing section, the second fixing section is connected to the first fixing section, the second fixing section has a mounting groove, and the mounting groove is used to install the blanking punch; wherein the second fixing section is arranged in the middle of the first fixing section.

[0013] According to another aspect of the present invention, a punch assembly is provided, including a punch fixing structure and a blanking punch, wherein the punch fixing structure is the punch fixing structure mentioned above, and the punch fixing structure is connected to the blanking punch.

[0014] Furthermore, a stop groove is arranged on the blanking punch, and the stop part of the punch fixing structure is inserted into the stop groove.

[0015] Furthermore, the blanking punch includes: a first punch section; a second punch section, the second punch section is detachably connected to the first punch section; wherein the second punch section is provided with a first punching portion, and an extension direction of the first punching portion is consistent with an extension direction of the second punch section.

[0016] Furthermore, a first groove is provided at the first end of the first punch section, the second punch section is arranged in the first groove, and an outer edge of the second punch section smoothly transitions with an outer edge of the first punch section.

[0017] Furthermore, the blanking punch also includes: a third punch section, which is detachably connected to the first punch section; wherein a second punching portion is provided on the third punch section, and an extension direction of the second punching portion is consistent with an extension direction of the third punch section.

[0018] Furthermore, a second groove is provided at the second end of the first punch section, the third punch section is arranged in the second groove, and an outer edge of the third punch section transitions smoothly with an outer edge of the first punch section.

[0019] Further, the first stamping portion is a convex portion, and the second stamping portion is a concave portion; or, the first stamping portion is a concave portion, and the second stamping portion is a convex portion.

[0020] Furthermore, the raised portion is a dovetail-shaped raised portion, and the recessed portion is a dovetail-shaped groove matching the dovetail-shaped raised portion.

[0021] The punch fixing structure of the present invention can achieve stable fixation of the blanking punch by setting the blanking punch in the mounting groove of the fixing part. In the specific installation process, by installing the blanking punch in the mounting groove, the positioning of the blanking punch can be completed and the stability of the blanking punch during use can be ensured. The punch fixing structure of the present invention can achieve stable fixation of the blanking punch by setting the blanking punch in the mounting groove of the fixing part, solving the problem of unstable blanking punch fixing method in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 A schematic cross-sectional structure diagram of a punch fixing structure in the prior art is shown;

[0024] Figure 2 A schematic diagram of the structure of a punch fixing structure in the prior art is shown;

[0025] Figure 3 A schematic cross-sectional structure diagram of a first embodiment of a punch fixing structure according to the present invention is shown;

[0026] Figure 4 A schematic structural diagram showing a first embodiment of a punch fixing structure according to the present invention is shown;

[0027] Figure 5 Shows Figure 4 A top view of the punch fixing structure;

[0028] Figure 6 A schematic cross-sectional view of a second embodiment of a punch fixing structure according to the present invention is shown;

[0029] Figure 7 A schematic structural diagram of a second embodiment of a punch fixing structure according to the present invention is shown.

[0030] The above drawings include the following reference numerals:

[0031] 10. Fixing part; 11. Mounting groove; 111. First groove section; 112. Second groove section; 12. First fixing section; 13. Second fixing section; 20. Blanking punch; 21. First punch section; 22. Second punch section; 221. First stamping part; 23. Third punch section; 231. Second stamping part; 30. Stopper; 40. Fastener; 50. Support part; 60. Connecting screw; 70. Pad. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] The present invention provides a punch fixing structure, please refer to Figures 3 to 7 The punch fixing structure includes: a fixing portion 10 , on which a mounting groove 11 is provided, and the mounting groove 11 is used to install the blanking punch 20 .

[0036] The punch fixing structure of the present invention can achieve stable fixation of the blanking punch 20 by setting the blanking punch 20 in the mounting groove 11 of the fixing part 10. In the specific installation process, by installing the blanking punch 20 in the mounting groove 11, the positioning of the blanking punch 20 can be completed and the stability of the blanking punch 20 when in use can be ensured. The punch fixing structure of the present invention can achieve stable fixation of the blanking punch 20 by setting the blanking punch 20 in the mounting groove 11 of the fixing part 10, solving the problem of unstable blanking punch fixing method in the prior art.

[0037] In order to prevent the blanking punch 20 from falling off from the mounting groove 11, Figure 3 As shown, the punch fixing structure further includes: a stopper 30 , the stopper 30 is connected to the fixing part 10 , and the stopper 30 is used for limiting contact with the blanking punch 20 .

[0038] In this embodiment, a stopper 30 is provided on the punch fixing structure, wherein the stopper 30 is connected to the fixing part 10 and the stopper 30 is in limiting contact with the blanking punch 20 , thereby preventing the blanking punch 20 from falling off from the mounting groove 11 .

[0039] For easy installation, the stopper 30 is used to engage with the blanking punch 20 .

[0040] Regarding the connection method between the stopper portion 30 and the fixing portion 10 , the stopper portion 30 and the fixing portion 10 are connected by snapping, bonding or by means of a fastener 40 .

[0041] In this embodiment, optionally, the stopper portion 30 is engaged with the fixing portion 10 .

[0042] Optionally, the stopper portion 30 is bonded to the fixing portion 10 .

[0043] Optionally, the stopping portion 30 is connected to the fixing portion 10 via a fastener 40 .

[0044] In order to stably arrange the blanking punch 20 in the mounting groove 11 without lengthening the blanking punch 20, as shown in FIG. Figure 3 As shown, the punch fixing structure further includes: a support portion 50 , which is disposed in the mounting groove 11 , and is clamped between the groove bottom of the mounting groove 11 and the blanking punch 20 .

[0045] In this embodiment, a support portion 50 is provided on the punch fixing structure, wherein the support portion 50 is provided in the mounting groove 11 , and the support portion 50 is clamped between the groove bottom of the mounting groove 11 and the blanking punch 20 .

[0046] In this embodiment, a punch pad (support portion 50) is used to assist in raising the height. Under the premise that there is a requirement for the punching height of the blanking punch 20, even if the blanking punch 20 is installed in the mounting groove 11, the punch pad (support portion 50) assists in raising the height, thereby ensuring the punching height of the blanking punch 20. There is no need to lengthen the blanking punch 20, which can ensure the processing accuracy of the support portion 50 and improve the verticality of the assembly of the support portion 50, making it more stable.

[0047] Regarding the specific structure of the installation slot 11, Figure 3 As shown, the mounting groove 11 includes a first groove section 111 and a second groove section 112 which are connected in sequence, and the fixing portion 10 includes: a first fixing section 12, the first fixing section 12 has a first groove section 111, and the support portion 50 is arranged in the first groove section 111; a second fixing section 13, the second fixing section 13 is connected to the first fixing section 12, the second fixing section 13 has a second groove section 112, and the second groove section 112 is used to install the blanking punch 20; wherein the second fixing section 13 is arranged in the middle of the first fixing section 12.

[0048] In this embodiment, the mounting groove 11 includes a first groove section 111 and a second groove section 112 that are connected in sequence, and the fixing portion 10 includes a first fixing section 12 and a second fixing section 13 .

[0049] In this embodiment, the first fixing section 12 has a first slot section 111 , the support portion 50 is disposed in the first slot section 111 , the second fixing section 13 is connected to the first fixing section 12 , the second fixing section 13 has a second slot section 112 , and the second slot section 112 is used to install the blanking punch 20 .

[0050] In order to ensure the verticality of the blanking punch 20, the second fixing section 13 is arranged in the middle of the first fixing section 12, that is, the second fixing section 13 is a boss relative to the first fixing section 12. The boss structure increases the fixing area of ​​the blanking punch 20, can better tighten the blanking punch 20, ensure the verticality of the blanking punch 20, and avoid the risk of chipping during punching.

[0051] Preferably, the second fixing section 13 and the first fixing section 12 are integrally formed, and the second fixing section 13 is a semi-cylinder.

[0052] Preferably, the fixing portion 10 includes: a first fixing section 12; a second fixing section 13, the second fixing section 13 is connected to the first fixing section 12, the second fixing section 13 has a mounting groove 11, and the mounting groove 11 is used to install the blanking punch 20; wherein the second fixing section 13 is arranged in the middle of the first fixing section 12.

[0053] The present invention further provides a punch assembly, including a punch fixing structure and a blanking punch 20 , wherein the punch fixing structure is the punch fixing structure mentioned above, and the punch fixing structure is connected to the blanking punch 20 .

[0054] In order to stop the blanking punch 20 , a stopping groove is provided on the blanking punch 20 , and the stopping portion 30 of the punch fixing structure is penetrated in the stopping groove.

[0055] Regarding the specific structure of the blanking punch 20, as shown in FIG. Figure 4 and Figure 5 As shown, the blanking punch 20 includes: a first punch section 21; a second punch section 22, and the second punch section 22 is detachably connected to the first punch section 21; wherein, a first punching portion 221 is provided on the second punch section 22, and an extension direction of the first punching portion 221 is consistent with an extension direction of the second punch section 22.

[0056] In this embodiment, the blanking punch 20 includes: a first punch segment 21 and a second punch segment 22, wherein the second punch segment 22 is detachably connected to the first punch segment 21, so that the first punch segment 21 and the second punch segment 22 can be replaced in segments.

[0057] In this embodiment, a first punching portion 221 is provided on the second punch section 22 , and an extending direction of the first punching portion 221 is consistent with an extending direction of the second punch section 22 , so that the stator can be punched by the first punching portion 221 .

[0058] In order to ensure a stable connection between the second punch section 22 and the first punch section 21 , a first groove is provided at the first end of the first punch section 21 , and the second punch section 22 is arranged in the first groove. The outer edge of the second punch section 22 smoothly transitions with the outer edge of the first punch section 21 .

[0059] In this embodiment, a first groove is provided at the first end of the first punch section 21 , and the second punch section 22 is arranged in the first groove, thereby ensuring a stable connection between the second punch section 22 and the first punch section 21 .

[0060] In this embodiment, considering the assembly and compactness of the overall structure of the blanking punch 20 , the outer edge of the second punch section 22 transitions smoothly with the outer edge of the first punch section 21 .

[0061] Correspondingly, the blanking punch 20 also includes: a third punch section 23, which is detachably connected to the first punch section 21; wherein a second punching portion 231 is provided on the third punch section 23, and an extension direction of the second punching portion 231 is consistent with an extension direction of the third punch section 23.

[0062] Preferably, a second groove is provided at the second end of the first punch section 21 , and the third punch section 23 is provided in the second groove. The outer edge of the third punch section 23 transitions smoothly with the outer edge of the first punch section 21 .

[0063] Regarding the specific structure of the first punching portion 221 and the second punching portion 231 , the first punching portion 221 is a convex portion, and the second punching portion 231 is a concave portion; or, the first punching portion 221 is a concave portion, and the second punching portion 231 is a convex portion.

[0064] Preferably, the protrusion is a dovetail protrusion, and the recess is a dovetail groove matched with the dovetail protrusion. The dovetail protrusion and dovetail groove structure make the stator more stable during assembly.

[0065] For the first embodiment of the present invention, Figures 3 to 5 As shown:

[0066] Reference Figure 3 , the pad 70 and the fixed part 10 are fixedly connected in the commonly used method, that is, first use pins to position, and then use screws to tighten. After ensuring that the gap and flatness of the fixed part 10 and the pad 70 meet the requirements, the support part 50 is placed in the punch mounting hole of the fixed part 10, and the blanking punch 20 and the punch insert (the second punch section 22 and the third punch section 23) are tapped into the boss of the fixed part 10, and are locked on the upper pad (pad 70) with bolts, and the punch block (stopper 30) is clamped into the punch insert for positioning, and the punch block is locked with a fixing screw (fastener 40), and is locked on the upper pad with a connecting screw, and finally the buckle point is inserted into the punch.

[0067] refer to Figure 3 In this embodiment, the punch is fixed by the boss of the fixing part 10. For general punches, the punch mounting hole of the fixing part 10 is used for fixing, but it is necessary to ensure that the blanking punch 20 is 1060mm higher than the fixing part. The structure of this embodiment can directly reduce the height of the punch by 20mm, and only the punch gasket needs to be used to make up 20mm. At the same time, the gasket does not require the same high dimensional accuracy as the punch, which reduces both material cost and processing cost.

[0068] In terms of improving the assembly efficiency and positioning accuracy of the blanking punch 20, Figure 3 The punch gasket can be directly put into the punch mounting hole of the fixed part 10 (the gap between the two is relatively large), and then the inlaid punch and the blanking punch 20 are knocked into the boss of the fixed part 10 to ensure that the total height of the support part 50 and the blanking punch 20 is 60 mm. Finally, the punch inlaid punch is clamped with a pressure block and locked with a screw. During assembly, the structure of this embodiment is easy to disassemble and replace. You only need to loosen the pressure block and take out the blanking punch 20 for replacement. The punch of this structure can be turned over for use, which increases the life of the mold by about one-fold. The use of punch inlay solves the problem of punch inlay and solves the problem of small rounded corners of dovetail buckles, which are easy to wear and tear, and the high cost of replacing parts. In addition, the inlaid punch is fixed with a separate pressure plate for easy maintenance and disassembly.

[0069] In terms of fixing effect, the blanking punch should be 60mm away from the upper pad. If the blanking punch 20 is set to 60mm, it is difficult to control the dimensional accuracy at 50mm wire cutting. In terms of verticality, the 60mm blanking punch 20 is difficult to ensure, and the fixing effect of the punch will also be greatly reduced. If the verticality is to be guaranteed, the processing cost will also be greatly increased. Figure 1 Pin positioning is adopted, but during the punching process, when the blanking punch 20 is subjected to lateral force, the pin is easy to move, the position of the punch is deviated, and the tool is easy to break. Figure 3 The convex platform is used for fixing, which ensures that the blanking punch 20 has a height of 40mm. It will not move when subjected to lateral force during the stamping process, and it is not easy to break the tool.

[0070] For the second embodiment of the present invention, Figure 6 and Figure 7 As shown:

[0071] Reference Figure 6 , the structure of this embodiment is relatively simple.

[0072] In terms of material cost, the height of the blanking punch 20 is 60 mm, which is Figure 3 20mm higher, the dovetail fillet can only be replaced after the entire blanking punch 20 is worn. In terms of processing cost, a 60mm blanking punch 20 is to be processed.

[0073] In terms of replacement, for this dovetail structure, the most easily worn part is the small fillet of the dovetail, and the structure of this embodiment requires the entire punch to be replaced.

[0074] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0075] The punch fixing structure of the present invention can achieve stable fixation of the blanking punch 20 by setting the blanking punch 20 in the mounting groove 11 of the fixing part 10. In the specific installation process, by installing the blanking punch 20 in the mounting groove 11, the positioning of the blanking punch 20 can be completed and the stability of the blanking punch 20 when in use can be ensured. The punch fixing structure of the present invention can achieve stable fixation of the blanking punch 20 by setting the blanking punch 20 in the mounting groove 11 of the fixing part 10, solving the problem of unstable blanking punch fixing method in the prior art.

[0076] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0077] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A punch assembly, comprising a punch fixing structure and a blanking punch (20), characterized in that: The punch fixing structure is connected to the blanking punch (20); the punch fixing structure comprises a fixing portion (10), a stop portion (30) and a supporting portion (50); the fixing portion (10) is provided with a mounting groove (11), and the mounting groove (11) is used to mount the blanking punch (20); the stop portion (30) is connected to the fixing portion (10), and the stop portion (30) is used to contact with the blanking punch (20) in a limited position; the blanking punch (20) is provided with a mounting groove (11) and a support portion (50); A stop groove is provided on the head (20), and the stop portion (30) of the punch fixing structure is inserted into the stop groove; the support portion (50) is provided in the mounting groove (11), and the support portion (50) is clamped between the groove bottom of the mounting groove (11) and the blanking punch (20), so as to raise the blanking punch (20) through the support portion (50), and the sum of the heights of the support portion (50) and the blanking punch (20) is 60 mm; The blanking punch (20) comprises a first punch section (21), a second punch section (22) and a third punch section (23); the first punch section (21) is an arc-shaped structure; the second punch section (22) and the third punch section (23) are respectively located at two ends of the arc distribution direction of the first punch section (21); the second punch section (22) is detachably connected to the first punch section (21); and the third punch section (23) is detachably connected to the first punch section (21); The second punch section (22) is provided with a first punching portion (221), which is a protruding portion protruding from the end surface of the first punch section (21) along the extension direction of the first punch section (21) so as to punch the stator; the extension direction of the first punching portion (221) is consistent with the extension direction of the second punch section (22); the third punch section (23) is provided with a second punching portion (231), which is a recessed portion recessed in the end surface of the first punch section (21) along the extension direction of the first punch section (21) so as to punch the stator; the extension direction of the second punching portion (231) is consistent with the extension direction of the third punch section (23); the protruding portion is a dovetail protrusion, and the recessed portion is a dovetail groove matched with the dovetail protrusion; A first groove is provided at the first end of the first punch section (21), the second punch section (22) is arranged in the first groove, and along the extension direction of the first punch section (21), the outer edge of the second punch section (22) smoothly transitions with the outer edge of the first punch section (21); a second groove is provided at the second end of the first punch section (21), the third punch section (23) is arranged in the second groove, and along the extension direction of the first punch section (21), the outer edge of the third punch section (23) smoothly transitions with the outer edge of the first punch section (21).

2. The punch assembly according to claim 1, characterized in that: The stopper (30) is used for clamping with the blanking punch (20).

3. The punch assembly according to claim 1, characterized in that: The stopper portion (30) is connected to the fixing portion (10) by snapping, bonding or by means of a fastener (40).

4. The punch assembly according to claim 1, characterized in that: The installation groove (11) comprises a first groove section (111) and a second groove section (112) which are connected in sequence, and the fixing portion (10) comprises: A first fixing section (12), the first fixing section (12) having the first slot section (111), the support portion (50) being arranged in the first slot section (111); A second fixing section (13), the second fixing section (13) being connected to the first fixing section (12), the second fixing section (13) having the second groove section (112), the second groove section (112) being used for mounting the blanking punch (20); Wherein, the second fixing section (13) is arranged in the middle of the first fixing section (12).

5. The punch assembly according to claim 4, characterized in that: The second fixing section (13) and the first fixing section (12) are integrally formed, and the second fixing section (13) is a semi-cylinder.

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