Automatic yielding type mold core structure of bending mold

Abstract

The utility model relates to the technical field of dies, in particular to an automatic yielding type die core structure of a bending die, which comprises at least one group of first slide blocks, a second slide block, a first guide rail and a second guide rail, the first bending part is arranged on the inner side of the test-piece first bending part; the at least one group of second sliding blocks are in sliding connection with the mold base chute; the second sliding block is arranged at the end part of the first sliding block and is arranged on the inner side of the second bending part of the test piece; the test piece is provided with at least two bending parts, namely a first bending part and a second bending part, and the first bending part and the second bending part are adjacently arranged; and the driving mechanism is connected with the first sliding block and is used for driving the first sliding block to slide on the die holder and enabling the second sliding block to be far away from or close to the second bending part of the test piece when the first sliding block slides. According to the automatic receding type mold core structure of the bending mold, the mold core structure can conduct receding after a test piece is bent, and the test piece is released. Therefore, the test piece can be smoothly taken out from the mold, and the difficulty in taking the test piece due to too tight mold or complex shape is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, in particular to an automatic retreat type core structure of a bending mold. BACKGROUND

[0002] The bending mold is a type of mold widely used in metal processing and plastic processing, and its main function is to make the test piece produce plastic deformation by applying external force, so as to achieve the required bending angle and shape. In the traditional design of the bending mold, the problem of difficulty in taking out the test piece after bending is often encountered. For example, the workpiece is stuck due to friction or tightness between the test piece and the core after bending, and manual intervention is required to take it out, which is not only low in efficiency but also has safety hazards.

[0003] The purpose of the present application is to provide an automatic retreat type core structure, which can retreat after the test piece is bent to release the test piece. The test piece can be smoothly taken out of the mold, avoiding the difficulty in taking out the test piece caused by the mold being too tight or the shape being complex. CONTENT OF THE UTILITY MODEL

[0004] In view of the above-mentioned shortcomings of the prior art, in order to achieve the above-mentioned purposes, the present application is realized by the following technical scheme:

[0005] The automatic retreat type core structure of the bending mold comprises:

[0006] The first sliding block is at least one group and is in sliding connection with the mold base; it is arranged on the inner side of the first bending part of the test piece;

[0007] The second sliding block is at least one group and is in sliding connection with the inclined groove of the mold base; it is arranged on the end of the first sliding block and on the inner side of the second bending part of the test piece;

[0008] The test piece has at least two bending parts, which are the first bending part and the second bending part, and the first bending part is arranged adjacent to the second bending part;

[0009] The driving mechanism is connected with the first sliding block and is used to drive the first sliding block to slide in the mold base, and to make the second sliding block slide away from or close to the second bending part of the test piece when the first sliding block slides.

[0010] Preferably, the second sliding block is "L" shaped, and the two free ends are provided with inclined surfaces, which are the first inclined surface and the second inclined surface;

[0011] The end of the first sliding block is provided with an inclined surface matching the first inclined surface;

[0012] The first sliding block is connected with a connecting plate, and the end of the connecting plate is provided with an inclined surface matching the second inclined surface.

[0013] Preferably, the second sliding block is connected with the mold base through a spring.

[0014] Preferably, the connecting plate is in sliding connection with the die holder.

[0015] Preferably, a limiting mechanism is arranged on the die holder away from the side of the first sliding block.

[0016] Preferably, the limiting mechanism comprises:

[0017] a limiting cylinder connected with the die holder;

[0018] a limiting block connected with the free end of the piston rod of the limiting cylinder and in sliding connection with the die holder.

[0019] Preferably, the driving mechanism is a cylinder or a hydraulic cylinder.

[0020] Compared with the known prior art, the technical scheme provided by the present application has the following beneficial effects:

[0021] (1) The automatic retreat type die core structure of the bending die provided by the present application comprises a first sliding block and a second sliding block, the first sliding block is in sliding connection with the die holder, the second sliding block is in sliding connection with the inclined slot of the die holder, and under the action of the driving mechanism, the first sliding block and the second sliding block are simultaneously moved inward, leaving more space for the test piece after bending, which facilitates the taking out of the test piece.

[0022] (2) The first sliding block is provided with an inclined surface matching the first inclined surface of the second sliding block, and the connecting plate is provided with an inclined surface matching the second inclined surface of the second sliding block, when the first sliding block slides inward, the connecting plate connected with the first sliding block moves, causing the inclined surface of the connecting plate to slide relative to the second inclined surface, and under the pulling force of the spring, the second sliding block slides inward. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 is a structural schematic view of the automatic retreat type die core structure of the bending die and the test piece of the present application;

[0025] Figure 2 is a structural schematic view of the automatic retreat type die core structure of the bending die of the present application without a group of second sliding blocks;

[0026] Figure 3 is a structural schematic view of the automatic retreat type die core structure of the bending die of the present application without a group of second sliding blocks; Figure 2 is a local enlarged view of A in FIG. 4;

[0027] Figure 4 Structure diagram of the automatic retreat type die core structure of the bending die in the embodiment of the present application when not retreating;

[0028] Figure 5 Structure diagram of the automatic retreat type die core structure of the bending die in the embodiment of the present application when retreating;

[0029] Figure 6 Structure diagram of the automatic retreat type die core structure of the bending die in another embodiment of the present application when not retreating;

[0030] Figure 7 Structure diagram of the automatic retreat type die core structure of the bending die in another embodiment of the present application when retreating;

[0031] In the above figures:

[0032] 10 - first slider;

[0033] 20 - second slider; 201 - first inclined surface; 202 - second inclined surface;

[0034] 30 - die holder; 301 - inclined groove;

[0035] 40 - driving mechanism;

[0036] 50 - connecting plate;

[0037] 60 - spring;

[0038] 70 - limiting mechanism; 701 - limiting cylinder; 702 - limiting block;

[0039] 100 - test piece. DETAILED DESCRIPTION

[0040] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0041] Figure 1 Structure diagram of the automatic retreat type die core structure of the bending die in the embodiment of the present application when not retreating; Figure 2 Structure diagram of the automatic retreat type die core structure of the bending die in the embodiment of the present application when not retreating; Figure 3 Structure diagram of the automatic retreat type die core structure of the bending die in the embodiment of the present application when not retreating; Figure 2 Enlarged view of part A in FIG. 8; Figure 4Structure diagram of the automatic retreat type die core structure of the bending die in the embodiment of the present application when not retreating; Figure 5 Structure diagram of the automatic retreat type die core structure of the bending die in the embodiment of the present application when retreating; Figure 6 Structure diagram of the automatic retreat type die core structure of the bending die in another embodiment of the present application when not retreating; Figure 7 Structure diagram of the automatic retreat type die core structure of the bending die in another embodiment of the present application when retreating.

[0042] In the embodiment, the test piece has three bending parts, i.e., a first bending part and a second bending part, and the second bending part is located on both sides of the first bending part. Of course, the test piece can also have two bending parts, in which case, the two bending parts are arranged adjacently, or the test piece can have four bending parts, in which case, two groups of first sliders, second sliders and driving mechanisms arranged oppositely can be arranged. In the embodiment, the inward movement refers to the movement in a direction away from the bending part of the test piece, and the outward movement refers to the movement in a direction close to the bending part of the test piece.

[0043] In the embodiment, as shown in Figures 1-2 , the automatic retreat type die core structure of the bending die comprises a first slider 10, a second slider 20 and a driving mechanism 40. The first slider 10 is a group and is in sliding connection with a die seat 30 and is arranged on the inner side of the first bending part of a test piece 100. The second slider 20 is two groups and is arranged on both ends of the first slider and is in sliding connection with an inclined groove 301 arranged on the die seat 30 and is arranged on the inner side of the second bending part of the test piece 100. The driving mechanism 40 is connected with the first slider 10 and is used for driving the first slider 10 to slide on the die seat 30 and driving the second slider 20 to move away from or close to the second bending part of the test piece 100 when the first slider 10 slides.

[0044] Specifically, as shown in Figures 2-3 , the second slider 20 is in the shape of “L” and has two free ends provided with inclined surfaces, i.e., a first inclined surface 201 and a second inclined surface 202. The end of the first slider 10 is provided with an inclined surface matching the first inclined surface 201, and when the first slider 10 slides, the inclined surfaces on both ends of the first slider 10 slide relative to the first inclined surface 201. The first slider 10 is connected with a connecting plate 50, and the end of the connecting plate 50 is provided with an inclined surface matching the second inclined surface 202, and when the connecting plate 50 moves under the driving of the first slider 10, the inclined surface of the connecting plate 50 slides relative to the second inclined surface 202. The second slider 20 is connected with the die seat 30 through a spring 60, and when the first slider 10 moves inward, the second slider 20 moves inward under the action of the pulling force of the spring 60, and when the first slider 10 moves outward, the second slider 20 moves outward under the extrusion of the inclined surface of the connecting plate 50 on the second inclined surface 202.

[0045] In order to ensure the stability of the sliding of the connecting plate 50, the connecting plate 50 and the mold base 30 are connected through the slide rail.

[0046] In order to facilitate the positioning of the mold core when moving to the position, the limit mechanism 70 is arranged on the side of the mold base 30 away from the first sliding block 10 of the connecting plate 50, so as to keep the stability of the mold core during stamping.

[0047] Specifically, the limit mechanism 70 includes a limit cylinder 701 and a limit block 702. The limit cylinder 701 is connected with the mold base 30; the limit block 702 is connected with the free end of the piston rod of the limit cylinder 701 and is in sliding connection with the mold base 30.

[0048] In the present application, the driving mechanism 40 is a cylinder or a hydraulic cylinder. Of course, the driving mechanism 40 can also be a motor-driven screw rod and a slide rod / way limiting structure. Of course, in this driving mechanism, the end of the screw rod and the slide rod / way cannot extend into the cavity of the bending stamping of the test piece.

[0049] As Figure 4 At this time, the test piece is bent, and the first sliding block 10 and the second sliding block 20 do not move inward. At this time, the inclined surface of the first sliding block 10 coincides with the first inclined surface 201; the inclined surface of the connecting plate 50 is attached to the upper end of the second inclined surface 202. Here, the "upper end" specifically refers to the end close to the first sliding block 10.

[0050] As Figure 5 At this time, the test piece is bent, and the first sliding block 10 and the second sliding block 20 move inward. At this time, the first sliding block 10 moves inward, and its inclined surface partially coincides with the first inclined surface 201; the inclined surface of the connecting plate 50 is attached to the lower end of the second inclined surface 202. Here, the "lower end" specifically refers to the end away from the first sliding block 10. Under the pulling force of the spring 60, the second sliding block 20 moves inward, that is, the first sliding block 10 and the second sliding block 20 automatically yield, and move away from the bending part of the test piece, facilitating the removal of the test piece.

[0051] Of course, as Figures 6-7When the first slider 10 and the second slider 20 do not move inward, the inclined surface of the first slider 10 can be separated from the first inclined surface 201, and the separation is caused by the pressing of the inclined surface of the connecting plate 50 on the second inclined surface 202. In this case, after the first slider 10 and the second slider 20 move inward, the inclined surface of the connecting plate 50 and the second inclined surface 202 move relative to each other, and the second slider 20 is pulled inward by the spring 60, so that the inclined surface of the first slider 10 can be coincided with the first inclined surface 201. The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic yielding core structure for a bending die, characterized by, The utility model relates to a test piece bending device, including: a first slider (10) is connected with the die seat (30) slidingly at least in a group, and is arranged at the inner side of the first bending part of the test piece (100); a second slider (20) is connected with the die seat (30) slidingly at least in a group, and is arranged at the end of the first slider (10) and the inner side of the second bending part of the test piece (100); the test piece (100) has at least two bending parts, which are the first bending part and the second bending part, and the first bending part is arranged adjacent to the second bending part; a driving mechanism (40) is connected with the first slider (10) and used for driving the first slider (10) to slide in the die seat (30), and when the second slider (20) slides in the first slider (10), the second slider (20) is away from or close to the second bending part of the test piece (100).

2. The automatic retreat type core structure of a bending die according to claim 1, wherein the second slider (20) is in the shape of 'L', and the two free ends are provided with inclined surfaces, which are the first inclined surface (201) and the second inclined surface (202); the end of the first slider (10) is provided with an inclined surface matched with the first inclined surface (201); the first slider (10) is connected with a connecting plate (50), and the end of the connecting plate (50) is provided with an inclined surface matched with the second inclined surface (202).

3. The automatic retreat type core structure of a bending die according to claim 2, wherein the second slider (20) is connected with the die seat (30) through a spring (60).

4. The automatic retreat type core structure of a bending die according to claim 2 or 3, characterized in that, the connecting plate (50) is connected with the die seat (30) slidingly.

5. The automatic retreat type core structure of a bending die according to claim 2, wherein the side, away from the first slider (10), of the connecting plate (50) is provided with a limiting mechanism (70) on the die seat (30).

6. The automatic retreat type core structure of a bending die according to claim 5, wherein the limiting mechanism (70) includes: a limiting cylinder (701) connected with the die seat (30); a limiting block (702) connected with the free end of the piston rod of the limiting cylinder (701) and connected with the die seat (30) slidingly.

7. The automatic retreatable core structure for a bending die according to claim 1, wherein the driving mechanism (40) is a cylinder or a hydraulic cylinder.

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