Punching mechanism with added blocking position

Abstract

The utility model discloses a punch mechanism that is additionally provided with a blocking position, which comprises a punch, can punch a through hole on a product, a tool apron, has an avoiding hole for avoiding the punch, the top surface of the tool apron is further provided with a boss, the part of the top surface of the tool apron without the boss forms a bearing surface for placing the product, the side vertical surface of the boss is provided with an inner fillet that can form a concave-convex matching limit with the edge of the product, wherein the side vertical surface of the boss comprises a rounded corner, an inverted bevel and a vertical surface from top to bottom in sequence, and the vertical surface, the inverted bevel and the rounded corner form a guiding opening that gradually expands from bottom to top. The utility model provides an effective blocking position during punching by forming a concave-convex matching limit between the inner fillet of the side vertical surface of the boss and the edge of the product, significantly reduces product deformation and ensures dimensional stability, and is especially suitable for punching processing near the edge of the product.

Description

Technical Field

[0001] This utility model relates to the field of stamping equipment, specifically to a punching mechanism with added stops. Background Technology

[0002] In metal processing, automotive parts manufacturing, and home appliance production, punching is an important material forming technology widely used for machining holes in various sheet metal products. Currently, the conventional punching structure, predominantly used in the industry, is the preferred solution for most production scenarios due to its simple die structure, low processing difficulty, and controllable manufacturing costs.

[0003] In actual production, when punching is required close to the edge of the product, some limitations of conventional punching structures become apparent. Due to the lack of effective positioning and support mechanisms, local stress concentration is prone to occur in the sheet metal during the punching process, leading to problems such as edge deformation and decreased dimensional accuracy. This problem is particularly prominent for thin-walled sheets or products with high precision requirements.

[0004] Such deformation can affect the appearance quality of the product and may also lead to difficulties in subsequent assembly, reducing the overall product pass rate. Therefore, how to make improvements tailored to local conditions to appropriately improve the punching quality is a problem frequently faced by field engineers. Utility Model Content

[0005] The problem to be solved by this utility model is to provide a punching mechanism with added stops.

[0006] To solve the above problems, this utility model provides a punching mechanism with added stops. To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problems is as follows: A punching mechanism with added stops includes: a punch capable of punching through holes in a product; a cutter holder with a clearance hole to avoid the punch, the top surface of the cutter holder also having a protrusion, the portion of the top surface of the cutter holder without the protrusion forming a bearing surface for placing the product, the side surface of the protrusion having an inner rounded corner that can form a concave-convex fit with the edge of the product for limiting positioning; wherein, the side surface of the protrusion includes, from top to bottom, a rounded corner, a chamfered corner, and a vertical surface, the vertical surface, the chamfered corner, and the rounded corner forming a guide opening that gradually widens from bottom to top.

[0007] As a further improvement of this utility model, the height of the boss is equal to the thickness of the product.

[0008] As a further improvement of this utility model, the height of the vertical surface is equal to half the height of the boss.

[0009] As a further improvement of this utility model, the angle between the chamfered angle and the vertical line is in the range of 5° to 10°.

[0010] As a further improvement of this utility model, the clearance hole is located on the bearing surface, and the center of the inner rounded corner coincides with the through hole axis of the product being limited.

[0011] As a further improvement of this utility model, the clearance hole includes a cylindrical cavity and a frustum cavity from top to bottom, and the frustum cavity forms a flared mouth that gradually expands from top to bottom.

[0012] As a further improvement of this utility model, the side face of the boss for product positioning is a positioning edge, and the trajectory of the positioning edge is Z-shaped when viewed along the axis of the through hole.

[0013] As a further improvement of this utility model, the bottom of the tool holder has a laterally enlarged base.

[0014] As a further improvement of this utility model, the side surface of the tool holder has a concave portion.

[0015] The beneficial technical effects of using the punching mechanism with added stops as described in this application are: During punching, a stop was applied to one side of the product, resulting in minimal deformation and dimensional stability at the punching point.

[0016] The rounded corners of the boss's side face form a concave-convex fit with the product edge, facilitating rapid horizontal positioning of the product. During punching, it effectively constrains product displacement, preventing edge deformation caused by localized stress concentration, ensuring dimensional stability around the through hole, and improving product machining accuracy.

[0017] The rounded and chamfered corners of the boss's side facade, together with the vertical facade, form a gradually widening guide opening from bottom to top, facilitating rapid vertical positioning of the product. This provides natural guidance for product placement, eliminating the need for repeated alignment adjustments, significantly reducing assembly difficulty and improving processing efficiency.

[0018] Finally, the bearing surface of the top surface of the tool holder provides flat support for the product. Together with the lateral limiting of the boss, it forms a double guarantee of surface support and lateral limiting, ensuring that the product is subjected to balanced force during punching, reducing the impact of vibration or displacement on the forming of through holes, and further optimizing the stability and reliability of punching. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an application diagram of one embodiment of the present invention; Figure 2 This is an assembly drawing of the product and the tool holder according to one embodiment of this utility model; Figure 3 This is a perspective view of a tool holder according to one embodiment of the present invention; Figure 4 This is a partial view of a tool holder according to one embodiment of the present invention; Figure 5 This is a perspective view of a tool holder according to one embodiment of the present invention; Figure 6 This is a top view of one embodiment of the present invention in its application state; Figure 7 This is a cross-sectional view (AA) of one embodiment of this utility model.

[0021] 1-Punch; 11-Punch working end; 2-Product; 21-Through hole; 22-Outer rounded corner; 3-Tool holder; 31-Allowing hole; 311-Cylindrical cavity; 312-Frustum cavity; 32-Boss; 33-Bearing surface; 34-Vertical surface; 35-Beveled angle; 36-Rounded corner; 37-Inner rounded corner; 38-Expanded base; 39-Concave part. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to specific embodiments: To achieve the purpose of this utility model, please refer to Figures 1 to 3 A punching mechanism with added stops includes: a punch 1 capable of punching through holes 21 in a product 2; a tool holder 3 having a clearance hole 31 to avoid the punch 1; a boss 32 protruding from the top surface of the tool holder 3; and a bearing surface 33 for placing the product 2 on the portion of the top surface of the tool holder 3 without the boss 32. The side surface of the boss 32 has an inner rounded corner 37 that can form a concave-convex fit with the edge of the product 2 for limiting positioning. The side surface of the boss 32 includes, from top to bottom, a rounded corner 36, a chamfered corner 35, and a vertical surface 34, wherein the vertical surface 34, the chamfered corner 35, and the rounded corner 36 form a guide opening that gradually widens from bottom to top.

[0023] Part of the side profile of the boss 32 is the limiting edge. The bottom of the punch 1 is the punch working end 11 that directly contacts and works with the product 2. The punch working end 11 has a circular cutting edge.

[0024] Product 2 has an outer rounded corner 22 on its edge, and the outer rounded corner 22 coincides with the center of the through hole 21.

[0025] The beneficial effects of adopting the above technical solution are: by forming a concave-convex fit between the inner rounded corner 37 of the side face of the boss 32 and the edge of the product 2, an effective stop is provided on one side of the product during punching, which significantly reduces the deformation of the product at the punching point and ensures dimensional stability. It is especially suitable for punching near the edge of the product.

[0026] like Figure 4 As shown, in some other embodiments of this utility model, the height of the boss 32 is equal to the thickness of the product 2.

[0027] The beneficial effects of adopting the above technical solution are: the boss 32 can fit and support the entire thickness direction of the product, further constrain the overall displacement and warping of the product during the punching process, and enhance the reliability of the limit.

[0028] like Figure 4 As shown, in some other embodiments of this utility model, the height of the vertical surface 34 is equal to half the height of the boss 32.

[0029] The beneficial effects of adopting the above technical solution are: it provides sufficient vertical guidance and limiting surface, and also reserves space for the guiding function of the chamfered corner 35 and the rounded corner 36, thus balancing the limiting strength and guiding smoothness.

[0030] like Figure 4 As shown, in some other embodiments of this utility model, the angle between the chamfered angle 35 and the vertical line ranges from 5° to 10°.

[0031] The beneficial effects of adopting the above technical solution are: it forms a moderately gentle guide slope, which facilitates the smooth introduction of product 2 during placement, achieves rapid alignment, and at the same time ensures the effectiveness of lateral support.

[0032] In some other embodiments of this utility model, the clearance hole 31 is located on the bearing surface 33, and the center of the inner rounded corner 37 coincides with the axis of the through hole 21 of the product 2 that is limited.

[0033] The clearance hole penetrates the top and bottom surfaces of the tool holder.

[0034] The beneficial effects of adopting the above technical solution are: it ensures that the punch 1, the hole position of the product 2 and the limiting structure of the tool holder 3 are accurately aligned during punching, thereby improving the positional accuracy and coaxiality of punching.

[0035] like Figure 7 As shown, in some other embodiments of the present invention, the clearance hole 31 includes a cylindrical cavity 311 and a frustum cavity 312 from top to bottom, and the frustum cavity 312 forms a flared opening that gradually expands from top to bottom.

[0036] The beneficial effects of adopting the above technical solution are: the flared opening formed by the frustum cavity 312 facilitates the smooth falling and discharge of punching waste, prevents waste blockage, and ensures the continuity and stability of punching operations.

[0037] In some other embodiments of this utility model, the side profile of the boss 32 that limits the product 2 is the limiting edge, and the viewing angle along the axis of the through hole 21 is as follows: Figure 3 As shown, the trajectory of the limit switch near the edge is Z-shaped.

[0038] The beneficial effects of adopting the above technical solution are: this shape can adapt to the complex contours of the product edge, provide multi-angle limiting contact points, and enhance the multidimensionality of the limiting and the resistance to torsion.

[0039] like Figure 3 As shown, in some other embodiments of this utility model, the bottom of the knife holder 3 has a laterally enlarged base 38.

[0040] The beneficial effects of adopting the above technical solution are: the enlarged base 38 increases the contact area and overall stability between the tool holder 3 and the mounting base, effectively resists the vibration and lateral force generated during the stamping process, and prevents the tool holder 3 from shifting.

[0041] like Figure 5 As shown, in some other embodiments of this utility model, the side face of the knife holder 3 has a recessed portion 39.

[0042] The surface of the concave portion 39 is a concave curved surface.

[0043] The beneficial effect of adopting the above technical solution is that it provides a convenient force application or clamping position for gripping, moving or installing the fixed tool holder 3 during operation.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A punching mechanism with added stops, characterized in that, include: A punch can punch through holes in a product; The tool holder has a clearance hole to avoid the punch. The top surface of the tool holder also has a protrusion. The part of the top surface of the tool holder without the protrusion forms a bearing surface for placing the product. The side surface of the protrusion has an inner rounded corner that can form a concave-convex fit with the edge of the product for positioning. The side facade of the boss includes, from top to bottom, a rounded corner, a chamfered corner, and a vertical surface, which together form a guide opening that gradually widens from bottom to top.

2. The punching mechanism with added stop as described in claim 1, characterized in that: The height of the boss is equal to the thickness of the product.

3. The punching mechanism with added stop as described in claim 1, characterized in that: The height of the vertical surface is equal to half the height of the boss.

4. The punching mechanism with added stop as described in claim 1, characterized in that: The angle between the chamfered angle and the vertical line ranges from 5° to 10°.

5. The punching mechanism with added stop as described in claim 1, characterized in that: The clearance hole is located on the bearing surface, and the center of the inner fillet coincides with the axis of the through hole of the product being limited.

6. The punching mechanism with added stop according to claim 1, characterized in that: The clearance hole includes a cylindrical cavity and a frustum cavity from top to bottom, and the frustum cavity forms a flared opening that gradually expands from top to bottom.

7. The punching mechanism with added stop according to claim 1, characterized in that: The side profile of the boss that provides product positioning is the positioning edge. From the perspective of the through hole axis, the trajectory of the positioning edge is Z-shaped.

8. The punching mechanism with added stop according to claim 1, characterized in that: The bottom of the tool holder has a laterally enlarged base.

9. The punching mechanism with added stop according to claim 1, characterized in that: The side face of the tool holder has a concave portion.

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