Locking structure for preventing sliding block from retreating

Abstract

The utility model relates to a locking structure for preventing a sliding block from retreating, which comprises a fixed die and a movable die, the fixed die and the movable die are closed to form a die cavity, a locking block is arranged at the bottom of the fixed die, a mounting seat capable of sliding on the movable die is arranged on the movable die, a sliding block is arranged on one side of the mounting seat close to the die cavity, and the sliding block is connected with the fixed die. The top of the sliding block is further provided with a locking groove, the movable mold is further provided with a driving cylinder used for driving the installation base to slide, and after the movable mold and the fixed mold are assembled, the locking block on the fixed mold is clamped into the locking groove. One side of the locking groove abuts against the locking block, the locking effect on the sliding block is improved, the sliding block is prevented from retreating, the sliding block is kept stable when subjected to injection molding pressure, and therefore the product quality and the safe use of the mold are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of die-casting mold technology and relates to a locking structure to prevent the slider from retracting. Background Technology

[0002] Die casting machines are machines used for pressure casting. Under pressure, the die casting machine injects molten metal into a mold to cool and solidify. After the mold is opened, a solid metal casting can be obtained. There are two types: hot pressing chamber and cold pressing chamber. The cold pressing chamber is further divided into two types: vertical and horizontal. The metal is melted outside the machine, and then the molten metal is added to the compression chamber. The compression piston horizontally forces the molten metal into the mold.

[0003] Currently, when designing inserts to form products for the front mold, mold opening requires first demolding the parts formed by the front mold, and then demolding the rear mold and slides. In the structural design of this type of mold, the power source for the slides must be provided externally. Traditionally, the external power source is mainly provided by hydraulic cylinders. The piston end of the hydraulic cylinder is driven by liquid. Therefore, when the piston end is subjected to a large external force, it will cause the piston end of the hydraulic cylinder to change position. Therefore, during the product injection process, the internal high pressure will force the hydraulic cylinder to retract. Thus, during the product injection process, the internal high-pressure aluminum liquid will force the slide to retract. The magnitude of the force depends on the direction of movement of the slide and the projected area of ​​the slide. The retraction problem of large slides will be more serious. To prevent the problem from occurring, the thickness of the mold frame needs to be increased. However, the mold frame is often a single piece of material, and enlarging the mold frame is costly. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a locking structure to prevent the slider from retracting.

[0005] The purpose of this utility model can be achieved through the following technical solution: a locking structure to prevent slider retraction, comprising a fixed mold and a moving mold, wherein the fixed mold and the moving mold close to form a mold cavity, characterized in that a locking block is provided at the bottom of the fixed mold, a mounting seat that can slide on the moving mold is provided on the moving mold, a slider is provided on the side of the mounting seat near the mold cavity, a locking groove is also provided at the top of the slider, and a driving cylinder for driving the mounting seat to slide is also provided on the moving mold, wherein when the moving mold and the fixed mold are closed, the locking block on the fixed mold is engaged in the locking groove.

[0006] In the above-mentioned locking structure for preventing the slider from retracting, a fixing screw is provided on the top of the fixed mold, and threaded holes are provided on both the fixed mold and the locking block. The fixing screw passes through the fixed mold and is threadedly connected to the locking block.

[0007] In the above-mentioned locking structure for preventing slider retraction, the driving cylinder is an oil cylinder, and a mounting block is provided between the driving cylinder and the moving mold. The driving cylinder is fixedly mounted on the moving mold through a mounting hole.

[0008] In the aforementioned locking structure for preventing slider retraction, the fixed mold has a mounting groove for mounting the locking block.

[0009] In the above-mentioned locking structure for preventing slider retraction, the mounting base is L-shaped and a fixing block is provided on the mounting base.

[0010] In the above-mentioned locking structure for preventing slider retraction, the moving mold is provided with a limiting step to limit the slider, and the bottom of the slider matches the limiting step.

[0011] Compared with the prior art, this utility model, by setting a locking block, can insert the locking block into the locking groove after the moving mold and the fixed mold are closed, so that one side of the locking groove abuts against the locking block, thereby increasing the locking effect on the slider, preventing the slider from dislodging, and keeping the slider stable under injection pressure, thus ensuring the quality of the product and the safe use of the mold. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the fixed mold structure of this utility model;

[0014] Figure 3 This is a cross-sectional view of the present invention.

[0015] In the diagram, 1 is the fixed mold; 2 is the moving mold; 3 is the locking block; 4 is the mounting base; 5 is the slider; 6 is the locking groove; 7 is the fixing screw; 8 is the mounting block; 9 is the mounting groove; 10 is the fixing block; 11 is the limit step; and 12 is the drive cylinder. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example

[0017] like Figure 1 and Figure 3As shown, a locking structure to prevent slider retraction includes a fixed mold 1 and a moving mold 2. The fixed mold 1 is a stationary part of the injection mold, usually mounted on the fixed platen of the injection molding machine. The moving mold 2, relative to the fixed mold 1, is a movable part, usually mounted on the moving platen of the injection molding machine. The main function of the moving mold 2 is to close with the fixed mold 1 during the injection process to form a mold cavity, so that molten material can be injected and shaped. After injection molding is completed, the moving mold 2 moves to separate the mold, thereby removing the molded part.

[0018] The fixed mold 1 and the moving mold 2 are closed to form a mold cavity. The bottom of the fixed mold 1 is provided with a locking block 3. The fixed mold 1 is provided with an installation groove 9 for installing the locking block 3. The top of the fixed mold 1 is provided with a fixing screw 7. Both the fixed mold 1 and the locking block 3 are provided with threaded holes. The fixing screw 7 passes through the fixed mold 1 and is threadedly connected to the locking block 3. Since the slider 5, locking block 3 and other components are subjected to long-term wear during the mold operation, the threaded connection method makes it convenient for the operator to replace the locking block 3 after it is worn.

[0019] The moving mold 2 is provided with a mounting base 4 that can slide on the moving mold 2. A slider 5 is provided on the side of the mounting base 4 near the mold cavity. A locking groove 6 is also provided on the top of the slider 5. The moving mold 2 is also provided with a drive cylinder 12 for driving the mounting base 4 to slide. When the moving mold 2 and the fixed mold 1 are closed, the locking block 3 on the fixed mold 1 is engaged in the locking groove 6.

[0020] The drive cylinder 12 is an oil cylinder, and a mounting block 8 is provided between the drive cylinder 12 and the moving mold 2. The drive cylinder 12 is fixedly mounted on the moving mold 2 through mounting holes.

[0021] The mounting base 4 is L-shaped and a fixing block 10 is provided on the mounting base 4. The fixing block 10 is provided on the fixed mold 1. When the fixed mold 1 and the moving mold 2 are closed, the fixing block 10 can abut against the back of the mounting base, thereby further preventing the slider 5 from retracting.

[0022] The moving mold 2 is provided with a limiting step 11 to limit the slider 5. The bottom of the slider 5 matches the limiting step 11. The limiting step 11 is set to limit the sliding position. When the lower end of the slider is in contact with the limiting step 11, the slider 5 is located at the designated position in the moving mold 2.

[0023] By setting a locking block 3, this utility model can insert the locking block 3 into the locking groove 6 after the moving mold 2 and the fixed mold 1 are closed, so that one side of the locking groove 6 abuts against the locking block 3, which increases the locking effect on the slider 5, prevents the slider 5 from dislodging, and keeps the slider 5 stable when subjected to injection pressure, thereby ensuring the quality of the product and the safe use of the mold.

[0024] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A locking structure for preventing slider retraction, comprising a fixed mold (1) and a moving mold (2), wherein the fixed mold (1) and the moving mold (2) close to form a mold cavity, characterized in that, The fixed mold (1) is provided with a locking block (3) at its bottom. The moving mold (2) is provided with a mounting seat (4) that can slide on the moving mold (2). The mounting seat (4) is provided with a slider (5) on the side near the mold cavity. The top of the slider (5) is also provided with a locking groove (6). The moving mold (2) is also provided with a drive cylinder (12) for driving the mounting seat (4) to slide. When the moving mold (2) and the fixed mold (1) are closed, the locking block (3) on the fixed mold (1) is engaged in the locking groove (6).

2. The locking structure for preventing slider retraction according to claim 1, characterized in that: The fixed mold (1) is provided with a fixing screw (7) on its top. Both the fixed mold (1) and the locking block (3) are provided with threaded holes. The fixing screw (7) passes through the fixed mold (1) and is threadedly connected to the locking block (3).

3. The locking structure for preventing slider retraction according to claim 2, characterized in that: The drive cylinder (12) is an oil cylinder. An installation block (8) is provided between the drive cylinder (12) and the moving mold. The drive cylinder (12) is fixedly installed on the moving mold (2) through the installation hole.

4. The locking structure for preventing slider retraction according to claim 3, characterized in that: The fixed mold (1) is provided with a mounting groove (9) for installing the locking block (3).

5. The locking structure for preventing slider retraction according to claim 4, characterized in that: The mounting base (4) is L-shaped, and a fixing block (10) is provided on the mounting base (4).

6. The locking structure for preventing slider retraction according to claim 5, characterized in that: The moving mold (2) is provided with a limiting step (11) to limit the slider (5), and the bottom of the slider (5) matches the limiting step (11).

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