Die oil cylinder self-locking structure

Abstract

The utility model discloses a die oil cylinder self-locking structure which comprises a die, a first oil cylinder and a second oil cylinder. The first sliding piece is arranged in the first sliding groove in a sliding mode, a second sliding groove is formed in one end of the first sliding piece, and the other end of the first sliding piece is connected with an inner pulling piece; the second sliding piece is arranged in the second sliding groove in a sliding mode. A through hole extending into the second sliding groove is formed in the side wall of the end, close to the second sliding groove, of the first sliding part, and the clamping pin is movably inserted into the through hole and used for limiting the second sliding part; and the oil cylinder is arranged on one side of the mold and is connected with the second sliding piece. According to the injection mold, the clamping pin is arranged on the first sliding part, the first sliding part is limited by the clamping pin during injection molding and pressure maintaining, it is guaranteed that the interior of the mold is always kept in a tight mold closing state during injection molding and pressure maintaining, defective products do not appear in compression molded products, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the mould field, especially a mould oil cylinder self locking structure. BACKGROUND

[0002] With the development of the automobile industry, the automobile lamp function is also more and more, and the lamp parts are also more and more complex, and with the mould structure is also more and more complex, and the oil cylinder is also more and more, but the oil cylinder retreat problem has been plaguing us.

[0003] The existing mould oil cylinder in the process of using, because the oil has the compression problem, in the compression, the inner extraction piece will receive the pressure, just possibly appears the inner extraction piece to drive the oil cylinder piston rod retraction condition, when the piston rod retraction, just possibly leads to the compression not tight, thereby possibly leads to the compression mode and appears the defective product condition, therefore when the oil cylinder for the plastic mould is used, needs to adopt a mould oil cylinder self locking structure to avoid the piston rod back pressure condition, improves the production quality of product. UTILITY MODEL CONTENTS

[0004] Therefore, in order to solve the problems in the prior art, the present application provides a mould oil cylinder self locking structure, which comprises a mould, and the mould is provided with a first sliding groove;

[0005] A first sliding member is slidably arranged in the first sliding groove, one end of the first sliding member is provided with a second sliding groove, and the other end is connected with an inner extraction piece;

[0006] A second sliding member is slidably arranged in the second sliding groove;

[0007] At least one pin is provided with a through hole extending into the second sliding groove on the side wall of one end of the first sliding member, the pin is movably inserted into the through hole, and the pin is used for limiting the second sliding member;

[0008] An oil cylinder is arranged on one side of the mould, and the oil cylinder is connected with the second sliding member.

[0009] Further, a first limiting groove is formed in the inner wall of the first sliding groove, a second limiting groove is formed in the side of the second sliding member close to the pin, and the first limiting groove and the second limiting groove are used for clamping the pin.

[0010] Further, the cross section shape of the first limiting groove and the second limiting groove is triangular or semicircular or semi-elliptical.

[0011] Further, it further comprises a connecting piece, one end of the connecting piece is connected with the oil cylinder, and the other end penetrates the first sliding member and is connected with the second sliding member.

[0012] Furthermore, the inner pull-out component is movably inserted into the mold and is set at an angle with the first sliding component. One end of the inner pull-out component is connected to the first sliding component, and the other end abuts against the workpiece inside the mold.

[0013] Furthermore, the end of the first sliding member connected to the inner drawer is provided with an inclined third sliding groove. The cross-sectional shape of the third sliding groove is "T". The connection end between the inner drawer and the first sliding member is "T" shaped and is slidably engaged in the third sliding groove.

[0014] Beneficial effects: By setting a locking pin on the first sliding part, the locking pin limits the first sliding part during injection molding and pressure holding, preventing the first sliding part from moving backward. This ensures that the mold inside the mold always maintains a tight mold-closing state during injection molding and pressure holding, so that the compression molded products will not have defective products and the product quality is improved. Attached Figure Description

[0015] 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 the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the self-locking structure of the mold cylinder of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the self-locking structure of the mold cylinder of this utility model;

[0018] Figure 3 This is a side view of the self-locking structure of the mold cylinder of this utility model;

[0019] Figure 4 This is a schematic diagram of the assembly of the self-locking structure of the mold cylinder of this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle;

[0021] Figure 6 This is a schematic diagram of the assembly of the internal parts of the self-locking structure of the mold cylinder of this utility model;

[0022] In the figure: 1. Mold; 11. First slide groove; 12. First limiting groove; 2. First sliding component; 21. Second slide groove; 211. First stepped surface; 22. Third slide groove; 23. Through hole; 3. Inner pull-out component; 4. Second sliding component; 41. Second limiting groove; 42. Second stepped surface; 5. Locking pin; 6. Hydraulic cylinder; 7. Connecting component.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] like Figures 1-6 As shown, this application embodiment provides a mold cylinder self-locking structure, including: a mold 1, the mold 1 having a first slide groove 11;

[0028] The first sliding member 2 is slidably disposed in the first sliding groove 11. One end of the first sliding member 2 is provided with a second sliding groove 21, and the other end is connected to an inner drawer 3.

[0029] The inner part 3 is movably inserted into the mold 1 and is set at an angle with the first sliding part 2. One end of the inner part 3 is connected to the first sliding part 2, and the other end abuts against the workpiece inside the mold 1.

[0030] The second sliding member 4 is slidably disposed within the second sliding groove 21;

[0031] At least one pin 5, the first sliding member 2 is provided with a through hole 23 extending to the inside of the second sliding groove 21 on the side wall of one end of the second sliding groove 21, and the pin 5 is movably inserted into the through hole. The pin 5 is used for limiting the second sliding member 4;

[0032] An oil cylinder 6 is arranged on one side of the mold 1, and the oil cylinder 6 is connected with the second sliding member 4.

[0033] In the embodiment, the first sliding groove 11 is a rectangular groove, the width of the first sliding member 2 matches the width of the first sliding groove 11, the sliding direction of the second sliding member 4 in the second sliding groove 21 is consistent with the direction of the first sliding member 2, and the width of the second sliding member 4 matches the width of the second sliding groove 21;

[0034] Optionally, the number of the pin 5 is two, which are respectively located on the two sides of the second sliding member 4, and the pin 5 can limit the second sliding member 4;

[0035] When one end of the inner pulling member 3 is subjected to the pressure inside the mold 1, the inner pulling member 3 is driven to slide in the mold 1, thereby driving the first sliding member 2 to slide in the first sliding groove 11. Optionally, the inner pulling member 3 is arranged perpendicularly to the first sliding member 2.

[0036] Specifically, before the mold 1 is closed, the pin 5 limits the second sliding member 4 to form an integral body with the first sliding member 2, so that they can move synchronously. At this time, the first sliding member 2 and the second sliding member 4 are located at one end of the first sliding groove 11 and the second sliding groove 21 close to the oil cylinder 6. When the mold is closed, the oil cylinder 6 drives the first sliding member 2 and the second sliding member 4 to slide to the other end of the first sliding groove 11. Then, when the end of the first sliding member 2 connected with the inner pulling member 3 and the inner wall of the first sliding groove 11 abuts, the pin 5 cancels the limitation of the second sliding member 4, and then limits the first sliding member 2. At this time, the oil cylinder 6 continues to drive the second sliding member 4 to slide in the second sliding groove 21. When the end of the second sliding member 4 away from the oil cylinder 6 abuts against the inner wall of the second sliding groove 21, the second sliding member 4 stops sliding, and the oil cylinder 6 stops driving. The mold is closed.

[0037] During injection molding and pressure maintaining, the pressure inside the mold 1 is transmitted to the inner pulling member 3, and the inner pulling member 3 transmits the force to the first sliding member 2. At this time, because the pin 5 limits the first sliding member 2, the first sliding member 2 does not retreat, which ensures that the mold 1 always maintains a tight mold closing state during injection molding and pressure maintaining, so that the products of pressure molding do not appear as defective products, and the quality of the products is improved.

[0038] When the mold 1 is opened, the oil cylinder 6 drives the second sliding piece 4 to retreat in the second sliding groove 21, when the end of the second sliding piece 4 close to the oil cylinder 6 is in contact with the inner wall of the second sliding groove 21, the oil cylinder 6 continues to exert pressure, at this time, the pin 5 will release the limitation on the first sliding piece 2 and limit the second sliding piece 4, at this time, the oil cylinder 6 drives the first sliding piece 2 and the second sliding piece 4 to retreat together, and the mold is opened.

[0039] In the present application, the pin 5 is arranged on the first sliding piece 2, during injection and pressure maintaining, the pin 5 limits the first sliding piece 2, so that the first sliding piece 2 does not retreat, and the mold 1 is kept in a tightly closed state during injection and pressure maintaining, so that the products produced by pressure molding are not defective, and the quality of the products is improved.

[0040] In an embodiment, the first sliding piece 2 is provided with a through hole, the through hole penetrates from the end face of the first sliding piece 2 close to the oil cylinder 6 to the second sliding groove 21, the self-locking structure further comprises a connecting piece 7, one end of the connecting piece 7 is connected with the oil cylinder 6, and the other end of the connecting piece 7 penetrates the first sliding piece 2 and is connected with the second sliding piece 4. It should be noted that the through hole can also be a through groove.

[0041] In the present embodiment, the diameter of the end of the connecting piece 7 penetrating the second sliding piece 4 is smaller than the width of the second sliding groove 21 and the second sliding piece 4, the through hole of the connecting piece 7 forms a first step surface 211 with the side wall of the second sliding groove 21, and the connecting piece 7 forms a second step surface 42 with the side wall of the second sliding piece 4, the first step surface 211 can limit the sliding of the second sliding piece 4, and the oil cylinder 6 drives the first sliding piece 2 and the second sliding piece 4 to slide through the connecting piece 7.

[0042] In an embodiment, the end of the first sliding piece 2 connected with the inner pulling piece 3 is provided with an inclined third sliding groove 22, the cross-sectional shape of the third sliding groove 22 is in the shape of “T”, the end of the inner pulling piece 3 connected with the first sliding piece 2 is in the shape of “T”, and the inner pulling piece 3 is slidingly connected in the third sliding groove 22.

[0043] In the present embodiment, when the inner pulling piece 3 is subjected to pressure, the inner pulling piece 3 is caused to slide along the inclined third sliding groove 22.

[0044] In an embodiment, the inner wall of the first sliding groove 11 is provided with a first limiting groove 12, the side of the second sliding piece 4 close to the pin 5 is provided with a second limiting groove 41, and the first limiting groove 12 and the second limiting groove 41 are used for clamping the pin 5.

[0045] In the present embodiment, the shapes of the first limiting groove 12 and the second limiting groove 41 are conical or hemispherical, and the shapes of the two ends of the pin 5 are conical or hemispherical and match the first limiting groove 12 and the second limiting groove 41 in size.

[0046] Wherein, the length of the second sliding piece 4 is greater than or equal to the distance from the end point of the one end of the second sliding piece 4 close to the pin 5 to the inner wall of the second sliding groove 21 close to the one end of the inner pulling piece 3; the distance from the second limiting groove 41 to the inner wall of the second sliding groove 21 close to the one end of the oil cylinder 6 is equal to the distance from the end point of the one end of the second sliding piece 4 close to the pin 5 to the inner wall of the second sliding groove 21 close to the one end of the oil cylinder 6;

[0047] Specifically, when the mold 1 is closed, the one end of the pin 5 close to the second sliding piece 4 is located in the second limiting groove 41, at this time, the pin 5 limits the second sliding piece 4 so that the second sliding piece 4 and the first sliding piece 2 form an integral, and the second sliding piece 4 and the first sliding piece 2 can be synchronously slid, then when the one end of the first sliding piece 2 connected with the inner pulling piece 3 abuts against the inner wall of the first sliding groove 11, the center lines of the first limiting groove 12, the pin 5 and the second limiting groove 41 are located on the same straight line, the oil cylinder 6 continues to exert force, at this time, the pin 5 slides out along the inner wall of the second limiting groove 41 under the action of the force, at this time, the pin 5 cancels the limitation of the second sliding piece 4, then the other end of the pin 5 is inserted into the first limiting groove 12 to limit the first sliding piece 2, at this time, the oil cylinder 6 continues to exert force to drive the second sliding piece 4 to slide in the second sliding groove 21, when the end of the second sliding piece 4 away from the one end of the oil cylinder 6 abuts against the inner wall of the second sliding groove 21, the second sliding piece 4 stops sliding, and the oil cylinder 6 stops exerting force, and the closing of the mold is completed;

[0048] When injection molding and pressure maintaining, the pressure in the mold 1 is transmitted to the inner pulling piece 3, and the inner pulling piece 3 transmits the force to the first sliding piece 2, at this time, because the pin 5 limits the first sliding piece 2, the first sliding piece 2 does not retreat;

[0049] When the mold 1 is opened, the oil cylinder 6 drives the second sliding piece 4 to retreat in the second sliding groove 21, when the one end of the second sliding piece 4 close to the oil cylinder 6 abuts against the inner wall of the second sliding groove 21, the center lines of the first limiting groove 12, the pin 5 and the second limiting groove 41 are located on the same straight line, the oil cylinder 6 continues to exert force, at this time, the pin 5 slides out along the inner wall of the first limiting groove 12 under the action of the force, and the limitation of the first sliding piece 2 is cancelled, then the other end of the pin 5 is inserted into the second limiting groove 41 to limit the second sliding piece 4 again, at this time, the oil cylinder 6 drives the first sliding piece 2 and the second sliding piece 4 to retreat together, so that the mold is demoulded.

[0050] The preferred embodiments are only used to illustrate the technical solutions of the present application, and not intended to limit the patent scope of the present application, and any equivalent structure changes made according to the contents of the present application and the drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A self-locking structure for a mold cylinder, characterized in that, include: The mold has a first groove. The first sliding member is slidably disposed in the first sliding groove, and one end of the first sliding member is provided with a second sliding groove, and the other end is connected to an inner drawer. The second slider is slidably disposed within the second groove. At least one locking pin is provided. The first sliding member has a through hole extending into the second sliding groove on one side wall near the second sliding groove. The locking pin is movably inserted into the through hole and is used to limit the movement of the second sliding member. A hydraulic cylinder is disposed on one side of the mold and is connected to the second sliding member.

2. The self-locking structure of the mold cylinder according to claim 1, characterized in that, The inner wall of the first sliding groove is provided with a first limiting groove, and the side of the second sliding member near the locking pin is provided with a second limiting groove. The first limiting groove and the second limiting groove are used to engage the locking pin.

3. The self-locking structure of the mold cylinder according to claim 2, characterized in that, The cross-sectional shape of the first limiting groove and the second limiting groove is triangular, semi-circular, or semi-elliptical.

4. The self-locking structure of the mold cylinder according to claim 1, characterized in that, It also includes a connector, one end of which is connected to the hydraulic cylinder, and the other end of which passes through the first sliding member and is connected to the second sliding member.

5. The self-locking structure of the mold cylinder according to claim 1, characterized in that, The inner pull-out component is movably inserted into the mold and is set at an angle to the first sliding component. One end of the inner pull-out component is connected to the first sliding component, and the other end abuts against the workpiece inside the mold.

6. The self-locking structure of the mold cylinder according to claim 5, characterized in that, The end of the first sliding member connected to the inner drawer is provided with an inclined third sliding groove. The cross-sectional shape of the third sliding groove is "T". The connection end of the inner drawer and the first sliding member is "T" shaped and is slidably engaged in the third sliding groove.

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