Flanging hole material returning die

Abstract

The utility model relates to a flanging hole material returning die. The flanging hole material returning die comprises an upper die and a lower die, the flanging hole material returning die is ingenious in structural design, and a material returning module in the flanging hole material returning die is an independent integral component and comprises fixing teeth and a material stripping column integrally connected with the fixing teeth; the set screw, the first reset spring and the first ejector pin are all arranged in the stripping column, so that the integrity is good; when the material returning module is mounted in the upper die, only the material returning module needs to be inserted along the mounting channel 111 in the upper die, so that the fixing teeth are tightly and fixedly connected with the fastening grooves 121, and a plurality of components of the material returning module do not need to be separately mounted in the fastening grooves of the upper die in sequence, so that the operation is simple; and the working efficiency of mounting the material returning module on the upper die can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware processing molds, and more specifically, to a flanging hole stripping mold. Background Art

[0002] In recent years, with the continuous development of the manufacturing industry, the demand for flanging hole stripping molds has been increasing. A flanging hole stripping mold is a special mold mainly used for stamping and flanging holes on workpieces with tubular structures or other similar shapes during the manufacturing process. The main function of this mold is to ensure that the flange fits tightly with the tubular structure during the flanging process and can smoothly remove the flanged part after the flanging is completed, so as to improve the straight wall flatness and appearance quality of the flanging hole;

[0003] As Figure 1 shown, the cross-sectional view of a common flanging hole stripping mold in the prior art is shown, including an upper die module 1 and a lower die module 2; on the upper die module 1, there is a flanging hole stripping structure 3 that cooperates with the lower die module to stamp the hollow cylinder on the workpiece into a flanging hole. The flanging hole stripping structure 3 includes a fastening screw 3.1, a stripping spring 3.2, and a stripping pin 3.3 arranged in sequence; one end of the stripping spring 3.2 abuts against the fastening screw 3.1, and the other end abuts against the upper surface of the stripping pin 3.3; the fastening screw 3.1 is fixedly connected to the upper die base 1.1 in the upper die 1, and the stripping pin 3.3 is movably connected to the upper stripping plate 1.2 in the upper die 1; in the process of assembling the mold, it is necessary to sequentially install multiple components in the flanging and stripping structure 3 on the upper die module 1, and the installation operation is relatively troublesome and the installation efficiency is low. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a flanging hole stripping mold in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problem is: a flanging hole stripping mold, including an upper die and a lower die. Among them, the upper die includes a fixed module, a movable module, and a vertically arranged stripping module; the stripping module includes a fixed tooth, and a stripping column arranged above the fixed tooth and integrally connected to the fixed tooth; a sealing cavity is arranged along the length direction inside the stripping column; in the sealing cavity, a stop screw, a first return spring, and a first ejector pin are sequentially connected from top to bottom; the first ejector pin can move along the length direction of the sealing cavity under an external force; the fixed tooth is provided with a first channel for the rod body of the first ejector pin to pass through; the fixed module is provided with an installation channel for the vertical passing of the stripping module; the movable module is provided with a fastening groove for cooperating with and fixedly connecting to the fixed tooth, and a second channel for the rod body of the first ejector pin to pass through and communicate with the first channel;

[0006] For the flanging hole unloading die of the present utility model, wherein the upper die longitudinally guides and moves on the lower die through a first guiding connection structure, and the fixed module longitudinally guides and moves on the movable module through a second guiding connection structure; the first guiding connection structure is located outside the flanging hole unloading die; the second guiding connection structure is located inside the first guiding connection structure towards the unloading module;

[0007] For the flanging hole unloading die of the present utility model, wherein the upper surface of the lower die is provided with a material waiting position for placing the workpiece; the upper surface of the workpiece is provided with a hollow cylinder body vertically upward; the first ejector pin corresponds to the hollow cylinder body; when the upper die and the lower die are closed, the first ejector pin punches into the inner hole of the hollow cylinder body to make it flanged and formed outward;

[0008] For the flanging hole unloading die of the present utility model, wherein a first cushion block is fixedly installed at the lower end of the movable module in the fastening groove; the second channel is located on the first cushion block; the lower surface of the first cushion block is flush with the lower surface of the movable module;

[0009] For the flanging hole unloading die of the present utility model, wherein a first anti-sticking component for preventing the workpiece from sticking to the lower surface of the movable module is further provided on the movable module;

[0010] For the flanging hole unloading die of the present utility model, wherein the lower die is provided with a movable groove, and a second cushion block that slides in the movable groove and corresponds to the first cushion block, a guiding column for driving the second cushion block to move in the movable groove, and a second return spring for providing an elastic force to the guiding column; a second ejector pin protruding from the upper surface of the lower die is vertically and longitudinally arranged in the movable groove of the lower die; a guiding groove for avoiding the second ejector pin is provided on the second cushion block; when the second return spring is in a free state, at least a part of the second cushion block protrudes from the upper surface of the lower die, and the upper surface of the second ejector pin is not higher than the upper surface of the second cushion block;

[0011] For the flanging hole unloading die of the present utility model, wherein a second anti-sticking component for preventing the workpiece from sticking to the upper surface of the lower die is further provided on the lower die; the first anti-sticking component and the second anti-sticking component are respectively located on both sides of the second cushion block;

[0012] For the flanging hole unloading die of the present utility model, wherein at least one positioning member for positioning the workpiece is fixedly provided on one side of the lower die at the material waiting position.

[0013] The beneficial effects of the present utility model are as follows: The structure of the flanging hole stripping die is ingeniously designed. The stripping module in the present utility model is a single integral component, including a fixed tooth and a stripping column integrally connected to the fixed tooth; the stop screw, the first return spring, and the first ejector pin are all arranged inside the stripping column, with good integrity. When installing the stripping module in the upper die, only need to insert the stripping module along the installation channel 111 on the upper die, so that the fixed tooth is tightly and fixedly connected to the fastening groove 121, without separately installing multiple components of the stripping module into the fastening groove of the upper die in sequence. The operation is simple and can greatly improve the working efficiency of installing the stripping module on the upper die. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will further illustrate 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:

[0015] Figure 1 is a cross-sectional view of the existing flanging hole stripping die in the background art;

[0016] Figure 2 is an internal structure schematic diagram of a flanging hole stripping die according to a preferred embodiment of the present utility model;

[0017] Figure 3 is Figure 2 the internal structure schematic diagram of the stripping module 13 in

[0018] Figure 4 is Figure 2 the enlarged view of part A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The terms "first", "second", "third", and "fourth" in the description and claims of the present invention and the accompanying drawings 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.

[0020] 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.

[0021] "Plurality" means two or more. "And / or" describes the relationship between associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0022] Moreover, terms indicating directions such as "upper, lower, front, back, left, right, upper end, lower end, longitudinal" etc. are all referenced based on the posture position of the device or equipment described in this solution during normal use.

[0023] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention. 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 belong to the protection scope of the present invention.

[0024] A flanging hole stripping die 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, the upper die 10 includes a fixed module 11, a movable module 12, and a vertically arranged stripping module 13. In the present utility model, the stripping module 13 is a standard part with an integral structure, which is convenient for disassembly and assembly on the upper die and has a stable structure. Further, the stripping module 13 includes a fixed tooth 131 and a stripping column 132 arranged above the fixed tooth 131 and integrally connected to the fixed tooth 131. A sealing cavity 133 is arranged along the length direction inside the stripping column 132. In the sealing cavity 133, a stop screw 134, a first return spring 135, and a first ejector pin 136 are sequentially connected from top to bottom. The first ejector pin 136 can move along the length direction of the sealing cavity 133 under an external force. When the fixed module is in contact with the movable module, at least a part of the free end of the first ejector pin 136 protrudes from the lower surface of the movable module. After the first ejector pin 136 receives an external thrust, it moves along the length direction of the sealing cavity towards the direction of the stop screw, and the first return spring is compressed and deformed. When the first ejector pin 136 is not affected by an external force, the first return spring automatically resets and drives the first ejector pin to move in the sealing cavity away from the stop screw. A first channel 137 is arranged on the fixed tooth 131 for the rod body of the first ejector pin 136 to pass through. An installation channel 111 is arranged on the fixed module 11 for the stripping module 13 to pass through vertically. A fastening groove 121 for cooperating with and fixedly connecting the fixed tooth 131 is arranged on the movable module 12, and a second channel 122 for the rod body of the first ejector pin 136 to pass through and communicate with the first channel 137 is arranged, which is convenient for the subsequent stamping and flanging treatment of the tubular structure or other similar-shaped structures on the workpiece by the first ejector pin. It should be noted that the process of stamping and flanging treatment of the tubular structure or other similar-shaped structures on the workpiece is an existing technology. In an embodiment, the fixed tooth 131 can be fixedly connected with the fastening groove 121 by interference ultrasonic connection or by threaded connection, and the connection is simple.

[0025] The structure of this flanging hole stripping die is ingeniously designed. The stripping module in the present utility model is a separate integral component, including a fixed tooth and a stripping column integrally connected to the fixed tooth. The stop screw, the first return spring, and the first ejector pin are all arranged inside the stripping column, and the integrity is good. When installing the stripping module in the upper die, only need to insert the stripping module into the installation channel on the upper die, and make the fixed tooth and the fastening groove tightly and fixedly connected, without separately installing multiple components of the stripping module into the fastening groove of the upper die in sequence. The operation is simple, and it can greatly improve the working efficiency of installing the stripping module on the upper die.

[0026] Furthermore, the upper die 10 longitudinally moves in a guiding manner on the lower die 20 through the first guiding connection structure 30, and the fixed module 11 longitudinally moves in a guiding manner on the movable module 12 through the second guiding connection structure 40; the first guiding connection structure 30 is located outside the flanging hole stripping die; the second guiding connection structure 40 is located inside the first guiding connection structure 30 facing the stripping module 13, with good positioning, which can ensure that the flanging hole stripping die will not deviate from the preset stamping flanging position during the die closing process of the upper die and the lower die.

[0027] Furthermore, the upper surface of the lower die 20 is provided with a material waiting position for placing the workpiece 01; the stripping module 13 is located within the range of the material waiting position; the upper surface of the workpiece 01 is provided with a hollow cylinder 02 vertically upward; the first ejector pin 136 corresponds to the hollow cylinder 02; when the upper die 10 and the lower die 20 are closed, the first ejector pin 136 punches into the inner hole of the hollow cylinder 02 to make it flanged outward.

[0028] Furthermore, a first cushion block 123 is fixedly installed at the lower end of the fastening groove 121 of the movable module 12; the second channel 122 is located on the first cushion block 123; the lower surface of the first cushion block 123 is flush with the lower surface of the movable module 12; the first cushion block 123 is installed on the movable module 12 through fastening screws. In the natural state, the first ejector pin is hidden in the first cushion block 123, which can further protect the first ejector pin, and the first ejector pin will not be easily bent by external collision.

[0029] In order to automatically separate the upper surface of the workpiece from the movable module, a first anti-sticking component 50 for preventing the workpiece 01 from adhering to the lower surface of the movable module 12 is further provided on the movable module 12; it should be noted that the first anti-sticking component 50 is a common stripping structure in the prior art and will not be elaborated here.

[0030] Furthermore, the lower die 20 is provided with a movable groove 124, a second cushion block 125 that slides in the movable groove 124 and corresponds to the first cushion block 123, a guiding column 126 that drives the second cushion block 125 to move in the movable groove 124, and a second return spring 127 that provides an elastic force to the guiding column 126; a second ejector pin 128 that protrudes from the upper surface of the lower die 20 is vertically and longitudinally arranged in the movable groove 124 of the lower die 20; a guiding groove 129 for avoiding the second ejector pin 128 is provided on the second cushion block 125; when the second return spring 127 is in a free state, at least a part of the second cushion block 125 protrudes from the upper surface of the lower die 20, and the upper surface of the second ejector pin 128 is not higher than the upper surface of the second cushion block 125; in the natural state, the second cushion block protrudes from the upper surface of the material waiting position, the workpiece is placed on the upper surface of the second cushion block, and the second ejector pin corresponds to the hollow cylinder on the workpiece, so as to facilitate subsequent cooperation with the first ejector pin to perform stamping flanging treatment on the hollow cylinder, with small through-hole deviation, uniform up and down force during flanging, and smooth workpiece stripping.

[0031] Furthermore, in order to automatically separate the lower surface of the workpiece from the lower die, a second anti-sticking component 60 for preventing the workpiece 01 from adhering to the upper surface of the lower die 20 is also provided on the lower die 20; the first anti-sticking component 50 and the second anti-sticking component 60 are respectively located on both sides of the second spacer 125. It should be noted that the second anti-sticking component 60 is a common material stripping structure in the prior art and will not be elaborated here. The workpiece will not adhere to the upper die or the lower die due to stamping, which is convenient for subsequent blanking.

[0032] Furthermore, at least one positioning member 70 for positioning the workpiece 01 is fixedly provided on one side of the lower die 20 at the material waiting position. The workpiece is well positioned and the deviation of the through hole is small.

[0033] It should be understood that for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A flanging hole stripping die, comprising an upper die and a lower die, characterized in that: The upper mold includes a fixed module, a movable module and a vertically arranged stripping module; the stripping module includes a fixed tooth and a stripping column arranged above the fixed tooth and integrally connected to the fixed tooth; a sealed cavity is provided in the stripping column along its length direction; a set screw, a first return spring and a first ejector pin are provided in the sealed cavity in sequence from top to bottom; the first ejector pin can be moved along the length direction of the sealed cavity under external force; a first channel is provided on the fixed tooth for the rod body of the first ejector pin to pass through; a mounting channel is provided on the fixed module for the stripping module to pass vertically; a fastening groove is provided on the movable module to be fixedly connected with the fixed tooth, and a second channel is provided on the movable module for the rod body of the first ejector pin to pass through and is connected to the first channel.

2. The flanging hole stripping die according to claim 1, characterized in that: The upper mold is longitudinally guided and moved on the lower mold through the first guiding connection structure, and the fixed module is longitudinally guided and moved on the movable module through the second guiding connection structure; the first guiding connection structure is located on the outer side of the flanging hole stripping mold; the second guiding connection structure is located on the inner side of the first guiding connection structure facing the stripping module.

3. The flanging hole stripping die according to claim 1, characterized in that: The upper surface of the lower die is provided with a waiting position for placing the workpiece; the upper surface of the workpiece is provided with a hollow cylinder facing vertically upward; the first ejector pin corresponds to the hollow cylinder; when the upper die and the lower die are closed, the first ejector pin is punched into the inner hole of the hollow cylinder to form an outward flange.

4. The flanging hole stripping die according to any one of claims 1 to 3, characterized in that: A first cushion block is fixedly mounted on the lower end of the movable module located at the fastening groove; the second channel is located on the first cushion block; and the lower surface of the first cushion block is flush with the lower surface of the movable module.

5. The flanging hole stripping die according to claim 4, characterized in that: The movable module is also provided with a first anti-sticking material component to prevent the workpiece from sticking to the lower surface of the movable module.

6. The flanging hole stripping die according to claim 5, characterized in that: The lower die is provided with a movable groove, a second cushion block sliding in the movable groove and corresponding to the first cushion block, a guide column driving the second cushion block to move in the movable groove, and a second return spring providing elastic force to the guide column; a second ejector pin protruding from the upper surface of the lower die is vertically and longitudinally arranged on the lower die in the movable groove; a guide groove for avoiding the second ejector pin is provided on the second cushion block; when the second return spring is in a free state, at least a part of the second cushion block protrudes from the upper surface of the lower die, and the upper surface of the second ejector pin is not higher than the upper surface of the second cushion block.

7. The flanging hole stripping die according to claim 6, characterized in that: The lower mold is also provided with a second anti-sticking material component to prevent the workpiece from sticking to the upper surface of the lower mold; the first anti-sticking material component and the second anti-sticking material component are respectively located on both sides of the second cushion block.

8. The flanging hole stripping die according to claim 3, characterized in that: At least one positioning member for positioning the workpiece is fixedly provided on the lower die at one side of the waiting position.

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