Sliding block anti-retreating locking mechanism

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to a sliding block anti-retreating locking mechanism which comprises a working table used for installing the locking mechanism, a pressing strip is installed on the working table, an oil cylinder is further installed on the working table, a first limiting block is elastically installed on the working table, and a first sliding block is fixed to the output end of the oil cylinder. The first sliding block is connected with a first ejector block, the first ejector block is further located in a first clamping block, the other end of the first sliding block is provided with the first clamping block, the first clamping block and the first sliding block are connected with each other, a movable gap is formed between the first clamping block and the first sliding block, and a clamping groove matched with the first limiting block is formed in the first clamping block. A common sliding block is improved under the condition that the appearance of a product is not changed, and the purposes of ensuring the safety of field personnel, improving the production stability and the production efficiency, saving the maintenance cost and the like are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and in particular relates to a slider anti-retraction locking mechanism. Background Art

[0002] Injection molding is a method of producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. Injection molding machine (referred to as injection machine or injection molding machine) is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting materials. Injection molding is achieved through injection molding machines and molds;

[0003] During the injection molding process, the injection molding machine injects high-temperature and high-pressure molten plastic into the mold cavity, causing the mold inner wall and slider to be subjected to great pressure. The traditional method is to use a hydraulic press to transmit pressure to the oil cylinder, which then holds the slider to prevent the slider from retreating due to the plastic pressure. When the oil pressure is lower than the pressure in the mold cavity, the ordinary oil cylinder anti-retreat mechanism fails, and the high-temperature liquid plastic overflows the mold, affecting the safety of on-site operators and wasting plastic raw materials and working hours. This method has no anti-retreat mechanism and is very likely to fail when the injection pressure is too high. The following two solutions are usually used:

[0004] 1. Make the shovel base. Disadvantages: high cost and high technical requirements for the assembly personnel;

[0005] 2. Customized cylinder with check valve, disadvantages: long customization cycle, high cost, and cannot be repaired quickly after damage;

[0006] In order to solve the above problems, the present application proposes a slider anti-retraction locking mechanism. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model provides a slider anti-retraction locking mechanism, which has the characteristics of saving mold maintenance costs, improving product quality and improving production efficiency.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slider anti-retraction locking mechanism, comprising a workbench for installing the locking mechanism, a pressure strip is installed on the workbench, an oil cylinder is also installed on the workbench, a No. 1 limit block is elastically installed on the workbench, a No. 1 slider is fixed to the output end of the oil cylinder, a No. 1 top block is connected to the No. 1 slider, the No. 1 top block is also located in the No. 1 clamping block, a No. 1 clamping block is arranged at the other end of the No. 1 slider, the No. 1 clamping block and the No. 1 slider are connected to each other and have a movable gap, and a slot matching the No. 1 limit block is opened on the No. 1 clamping block.

[0009] As a preferred technical solution of the utility model, a No. 1 spring is arranged between the No. 1 limit block and the workbench, and the No. 1 limit block is clamped in the clamping groove through the No. 1 spring.

[0010] As a preferred technical solution of the utility model, a matching chamfer is provided between the bottom of the No. 1 limit block and the upper end of the No. 1 top block, and the No. 1 top block is driven by the oil cylinder to squeeze the No. 1 limit block and detach it upward from the inside of the slot.

[0011] As a preferred technical solution of the utility model, the No. 1 sliding block is provided with a fixing block for fixing the No. 1 top block, and the No. 1 clamping block is provided with a movable groove for the No. 1 top block.

[0012] As a preferred technical solution of the utility model, the No. 1 clamping block and the No. 1 sliding block slide directionally on the workbench through the pressure strip.

[0013] As a preferred technical solution of the utility model, the No. 1 clamping block is locked on the workbench by engaging the No. 1 limit block and the clamping slot.

[0014] Compared with the prior art, the utility model has the following beneficial effects: without changing the appearance of the product, the ordinary slider is improved to ensure the safety of on-site personnel, improve production stability and production efficiency, save maintenance costs, etc., and achieve the following technologies:

[0015] Easy to make: no special requirements, common production methods can meet the use requirements;

[0016] Reduce maintenance costs: By improving the mold slider anti-retraction locking mechanism, automated production can be achieved, avoiding various maintenance costs caused by the failure of the cylinder anti-retraction mechanism;

[0017] Unrestricted use conditions: independent mechanism system, no need to design other mechanical structures to provide power source, and not affected by the mold opening sequence in the injection mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the main structure of the slider in the utility model in a closed state;

[0020] Figure 2 This is a structural schematic diagram of the utility model in which the slider is in an open state;

[0021] Figure 3 This is a schematic diagram of the main structure of the closed state of Example 2 of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of Example 2 of the utility model from a top view;

[0023] Figure 5 for Figure 3 Schematic diagram of the structure cut from the main view;

[0024] Figure 6 This is a schematic diagram of the main structure of the embodiment 2 of the utility model in the open state;

[0025] Figure 7 for Figure 6 Schematic diagram of the structure cut from the main view;

[0026] In the figure: 1. pressure strip; 2. oil cylinder; 3. No. 1 spring; 4. No. 1 limit block; 5. No. 1 top block; 6. No. 1 clamping block; 7. No. 1 slider; 8. fixing block; 9. slot; 10. mounting seat; 11. No. 2 slider; 12. No. 2 clamping block; 13. No. 2 top block; 14. No. 2 limit block; 15. No. 2 spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] See also Figure 1-2 The utility model provides the following technical solutions: a slider anti-retraction locking mechanism, including a workbench for the installation of the locking mechanism, a pressure strip 1 is installed on the workbench, a cylinder 2 is also installed on the workbench, a limit block 4 is elastically installed on the workbench, a slider 7 is fixed at the output end of the cylinder 2, a top block 5 is connected to the slider 7, the top block 5 is also located in the clamping block 6, the other end of the slider 7 is provided with a clamping block 6, the clamping block 6 and the slider 7 are connected to each other and have a movable gap, the movable gap is used for the top block 5 to lift the limit block 4, and then drive the clamping block 6 to disengage from the clamping, and the clamping block 6 is provided with a slot 9 that cooperates with the limit block 4. In this embodiment, when the slider locking structure is needed in the machinery industry or other industries, this type of structural design can be used. It is especially suitable for extreme environments such as high temperature and high pressure, convenient to use, saves manpower, improves structural reliability, and ensures personnel safety. It is less restricted by conditions in mold design.

[0030] Specifically, a No. 1 spring 3 is provided between the No. 1 limit block 4 and the workbench, and the No. 1 limit block 4 is clamped in the slot 9 through the No. 1 spring 3. In this embodiment, a guide rod running through the workbench is fixed on the No. 1 limit block 4, and the No. 1 spring 3 is sleeved on the outside of the guide rod. Then, the No. 1 limit block 4 is clamped in the slot 9 by the elastic force of the No. 1 spring 3, thereby completing the locking of the No. 1 clamp 6.

[0031] Specifically, a matching chamfer is provided between the bottom of the No. 1 limit block 4 and the upper end of the No. 1 top block 5. The No. 1 top block 5 is driven by the oil cylinder 2 to squeeze the No. 1 limit block 4 and detach it upward from the inside of the slot 9. The chamfer setting in this embodiment facilitates the cooperation between the No. 1 limit block 4 and the No. 1 top block 5, thereby ensuring the stable use of the No. 1 limit block 4.

[0032] Specifically, a fixing block 8 for fixing the No. 1 top block 5 is provided on the No. 1 sliding block 7, and a movable groove for the No. 1 top block 5 is opened on the No. 1 clamping block 6. In this embodiment, the notch on the No. 1 clamping block 6 plays an avoidance role and does not affect the normal clamping of the No. 1 clamping block 6.

[0033] Specifically, the No. 1 clamping block 6 and the No. 1 sliding block 7 slide directionally on the workbench through the pressure strip 1. In this embodiment, the pressure strip 1 plays a guiding role.

[0034] Specifically, the No. 1 clamping block 6 is locked on the workbench by the engagement of the No. 1 limit block 4 and the card slot 9. In this embodiment, the No. 1 clamping block 6 moving in the horizontal direction is locked by the No. 1 limit block 4 in the vertical direction, which has the advantages of simple structure and high reliability.

[0035] Example 2

[0036] See also Figure 3-7 The utility model provides the following technical solutions: a slider anti-retraction locking mechanism, including a mounting seat 10 and an oil cylinder 2 fixed on the mounting seat 10, a No. 2 top block 11 and a No. 2 clamping block 12 are respectively slidably arranged on the mounting seat 10, a No. 2 limit block 13 is fixed on the No. 2 top block 11, a No. 2 spring 14 is arranged inside the mounting seat 10 through 15, the oil cylinder 2 pulls the No. 2 top block 11 and drives the No. 2 limit block 13 to move, the No. 2 limit block 13 squeezes the No. 2 spring 14 downward from the slot of the No. 2 limit block 13, and then the No. 2 top block 11 continues to move and drives the No. 2 clamping block 12 to disengage from the clamping, the No. 2 top block 11 and the No. 2 clamping block 12 are connected to each other and have a movable gap, and both ends of the No. 2 spring 14 are provided with recessed grooves with the same structure as the slot 9 for locking the No. 2 clamping block 12.

[0037] The working principle and use process of this utility model:

[0038] A clamp block 6 and a slider 7 are slidably mounted on the workbench through a pressure strip 1. The oil cylinder 2 is also mounted on the workbench. The output end of the oil cylinder 2 is connected to the slider 7. A limit block 4 is mounted on the fixed frame through a spring 3. The limit block 4 is clamped in the clamping slot 9 through the spring 3.

[0039] The No. 1 top block 5 in the clamping state of the No. 1 clamping block 6 is clamped in the clamping groove 9 by the No. 1 spring 3. At this time, the No. 1 clamping block 6 is locked. When the mold is opened, the oil cylinder 2 moves backward, pulling the No. 1 slider 7 and the No. 1 top block 5 to move synchronously. The chamfer on the No. 1 top block 5 forces the No. 1 limit block 4 to move upward, and the No. 1 spring 3 is compressed until the clamping groove 9 is completely withdrawn from the inside of the No. 1 limit block 4. The oil cylinder 2 and the No. 1 slider 7 continue to move backward, driving the No. 1 clamping block 6 to move and disengage from the clamping;

[0040] When processing again, the oil cylinder 2 pushes the No. 1 clamping block 6, the No. 1 sliding block 7, and the No. 1 top block 5 to reset. After the No. 1 clamping block 6 is in place, the No. 1 top block 5 is separated from the No. 1 limit block 4, and the No. 1 limit block 4 is stuck in the slot 9 under the action of the No. 1 spring 3 to achieve locking again.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A slider anti-retraction locking mechanism, comprising a workbench for installing the locking mechanism, a pressure strip (1) is installed on the workbench, and an oil cylinder (2) is also installed on the workbench, characterized in that: A No. 1 limit block (4) is elastically mounted on the workbench, a No. 1 slider (7) is fixed to the output end of the oil cylinder (2), a No. 1 top block (5) is connected to the No. 1 slider (7), the No. 1 top block (5) is also located in a No. 1 clamping block (6), a No. 1 clamping block (6) is arranged at the other end of the No. 1 slider (7), the No. 1 clamping block (6) and the No. 1 slider (7) are connected to each other and have a movable gap, and a clamping groove (9) is provided on the No. 1 clamping block (6) to cooperate with the No. 1 limit block (4).

2. A slider anti-retraction locking mechanism according to claim 1, characterized in that: A No. 1 spring (3) is arranged between the No. 1 limit block (4) and the workbench, and the No. 1 limit block (4) is clamped in the clamping groove (9) through the No. 1 spring (3).

3. A slider anti-retraction locking mechanism according to claim 2, characterized in that: A matching chamfer is provided between the bottom of the No. 1 limit block (4) and the upper end of the No. 1 top block (5), and the No. 1 top block (5) is driven by the oil cylinder (2) to squeeze the No. 1 limit block (4) and detach it upward from the inside of the slot (9).

4. The slider anti-retraction locking mechanism according to claim 1, characterized in that: The No. 1 sliding block (7) is provided with a fixing block (8) for fixing the No. 1 top block (5), and the No. 1 clamping block (6) is provided with a movable groove for the No. 1 top block (5).

5. The slider anti-retraction locking mechanism according to claim 1, characterized in that: The No. 1 clamping block (6) and the No. 1 sliding block (7) slide in a directional manner on the workbench through the pressure strip (1).

6. A slider anti-retraction locking mechanism according to claim 1, characterized in that: The No. 1 clamping block (6) is locked on the workbench through the engagement of the No. 1 limiting block (4) and the clamping slot (9).

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