Three-plate mold anti-rebound structure

Abstract

The utility model relates to injection molding machine accessory technical field, concretely relates to a three board mould anti -rebound structure, including male die plate and female die plate, is provided with the material shifting plate between male die plate and female die plate, the inside of male die plate, female die plate and material shifting plate all are penetrated with mould guide pillar, and the periphery of male die plate and female die plate is fixedly installed with multiple sets of anti -rebound mechanism, and the anti -rebound mechanism includes the mechanism pole of fixed mounting in male die plate outside, the outside fixed mounting of material shifting plate has the apron, the inside detachable mounting of material shifting plate has the locating block, and the one end fixed mounting of locating block has the limit stop, when male die plate moves to the setting position when the male die plate and female die plate closed mould, the limit stop of anti -rebound mechanism will be inserted into the installation groove, when male die plate moves to the setting position in the mould -opening process, the limit stop of anti -rebound mechanism will be inserted into the limiting slot, forms mechanical limit, and this structure can effectively prevent male die plate rebound, ensures the stable opening distance, and the convenient material head is smoothly taken out.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding machine parts, and in particular to a three-plate mold anti-rebound structure. Background Technology

[0002] When a three-plate mold is produced on a horizontal injection molding machine, the front platen moves to the position limited by the tie rod. This mold also has a slider with a spring inside. Due to the elastic force of the slider, the front platen will automatically rebound, and the opening distance of the front platen will become smaller, making it impossible to remove the middle material head. The traditional method is to apply grease to the mold guide pillars to increase adhesion, but the effect is not stable enough, and an anti-rebound structure is needed for assistance.

[0003] In the prior art, such as the patent with announcement number CN209036948U, a hydraulic mechanism for preventing rebound of a moving template is disclosed, including a moving template, a mold, and a hydraulic oil circuit system for controlling mold opening and locking. The hydraulic oil circuit system includes a mold opening tube, a mold locking tube, and an electro-hydraulic valve base. The feature is that a cartridge valve is installed between the bottom end of the mold opening tube and the electro-hydraulic valve base to control the direction, pressure, and flow of the oil in the mold opening tube and prevent leakage of the oil in the mold opening tube.

[0004] The above structure adds a cartridge valve and a solenoid valve to the bottom of the injection molding machine's mold opening tube to prevent the moving platen of the injection molding machine from rebounding. However, the cost is high, and it cannot solve the problem of platen rebound caused by the spring force of the slider during the mold opening process of a three-plate mold, making it difficult to remove the sprue. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a three-plate mold anti-rebound structure to solve the problems of high cost and inability to solve the problem of template rebound caused by slider elasticity during the mold opening process, making it difficult to remove the material head.

[0006] Based on the above objectives, this utility model provides a three-plate mold anti-rebound structure, including a male template and a female template, with a material-pulling plate provided between the male template and the female template, and mold guide pillars penetrating the interior of the male template, the female template and the material-pulling plate, and multiple sets of anti-rebound mechanisms fixedly installed around the male template and the female template.

[0007] The anti-rebound mechanism includes a mechanism rod fixedly installed on the outside of the template, a protective plate fixedly installed on the outside of the material feeding plate, the mechanism rod penetrating the inside of the protective plate, and a positioning block detachably installed inside the material feeding plate. A limit clamp is fixedly installed at one end of the positioning block, and one end of the limit clamp is chamfered.

[0008] The mechanism rod has an installation groove and a limiting groove on one side that correspond to the limiting clamp.

[0009] Preferably, the mechanism rod is provided with at least four sets, and the mounting groove and the limiting groove are arranged in parallel on one side of the mechanism rod, with the size of the mounting groove being larger than the size of the limiting groove.

[0010] Preferably, the mother template has a slot inside to accommodate the positioning block, and the slot and the positioning block are threaded together.

[0011] Preferably, positioning pins are fixedly installed between the multiple sets of mechanism rods and the male template, and between the multiple sets of positioning blocks and the female template.

[0012] Preferably, the inner walls of both the mounting groove and the limiting groove are provided with matching polyurethane pads.

[0013] Preferably, a limiting rod is fixedly installed on the outside of the public template, and a stop post is detachably installed at the end of the limiting rod.

[0014] The beneficial effects of this utility model are:

[0015] When the male and female mold plates are closed, the limit clamp of the anti-rebound mechanism will engage in the mounting groove when the male mold plate moves to the set position. During the mold opening process, when the male mold plate moves to the set position, the limit clamp of the anti-rebound mechanism will engage in the limit groove, forming a mechanical limit.

[0016] This structure effectively prevents the template from rebounding, ensuring a stable mold opening distance and facilitating the smooth removal of the material head. It effectively solves the problem of template rebound caused by the slider elasticity during the mold opening process of three-plate molds, replacing the traditional unstable anti-slip method and improving the stability of mold operation and production efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in 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 for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model in its open mold state;

[0020] Figure 3 This utility model Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0021] Figure 4 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0022] Figure 5 This is an exploded structural diagram of the mechanism rod and positioning block of this utility model.

[0023] The markings in the diagram are: 1. Male template; 2. Female template; 3. Material feeding plate; 4. Anti-rebound mechanism; 5. Positioning pin; 6. Mechanism rod; 7. Guard plate; 8. Limiting clamp; 9. Mounting groove; 10. Limiting groove; 11. Positioning block; 12. Mold guide pillar; 13. Limiting rod; 14. Stop pillar. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, a three-plate mold anti-rebound structure includes a male template 1 and a female template 2. A material-pushing plate 3 is provided between the male template 1 and the female template 2. Mold guide pillars 12 penetrate the interior of the male template 1, the female template 2 and the material-pushing plate 3. Multiple sets of anti-rebound mechanisms 4 are fixedly installed around the male template 1 and the female template 2.

[0026] The anti-rebound mechanism 4 includes a mechanism rod 6 fixedly installed on the outside of the template 1, a protective plate 7 fixedly installed on the outside of the material feeding plate 3, the mechanism rod 6 penetrating the inside of the protective plate 7, and a positioning block 11 detachably installed inside the material feeding plate 3. A limit clamp 8 is fixedly installed on one end of the positioning block 11, and one end of the limit clamp 8 is chamfered.

[0027] The mechanism rod 6 has an installation groove 9 and a limiting groove 10 on one side, which correspond to the limiting clamp 8.

[0028] In this embodiment, when the male template 1 and the female template 2 are closed, when the male template 1 moves to the set position, the limiting clamp 8 of the anti-rebound mechanism 4 will be engaged in the mounting groove 9. During the mold opening process, when the male template 1 moves to the set position, the limiting clamp 8 of the anti-rebound mechanism 4 will be engaged in the limiting groove 10, forming a mechanical limit.

[0029] This structure effectively prevents the male template 1 from rebounding, ensuring a stable mold opening distance and facilitating the smooth removal of the material head. It effectively solves the problem of template rebound caused by the elasticity of the slider during the mold opening process of the three-plate mold, replacing the traditional unstable anti-slip method and improving the stability of mold operation and production efficiency.

[0030] As one implementation method, such as Figure 3 , Figure 4 and Figure 5As shown, the mechanism rod 6 is provided with at least four sets of mounting grooves 9 and limiting grooves 10, which are arranged in parallel on one side of the mechanism rod 6. The size of the mounting groove 9 is larger than the size of the limiting groove 10.

[0031] In this embodiment, multiple sets of mechanism rods 6 are used to mechanically limit the male template 1 and female template 2 outside, thereby improving stability. In addition, the size of the mounting groove 9 is larger than the size of the limiting groove 10. When the mold is closed, the limiting clamp 8 will be inserted into the mounting groove 9. During the mold opening process, the limiting clamp 8 will be inserted into the limiting groove 10. The size of the limiting groove 10 matches the limiting clamp 8, thus preventing the template from rebounding.

[0032] As one implementation method, such as Figure 3 and Figure 4 As shown, the mother template 2 has a slot inside to accommodate the positioning block 11, and the slot and the positioning block 11 are threaded together.

[0033] In this embodiment, the final stopping position of the male template 1 can be finely adjusted by rotating the positioning block 11, resulting in higher precision. Furthermore, after long-term use, the limit clamp 8 on the positioning block 11 will wear out, and the gap can be compensated by adjustment, thus extending the mold life.

[0034] As one implementation method, such as Figure 2 and Figure 3 As shown, positioning pins 5 are fixedly installed between multiple sets of mechanism rods 6 and male template 1, and between multiple sets of positioning blocks 11 and female template 2.

[0035] In this embodiment, since the entire assembly is installed via the positioning pin 5, when it is necessary to repair or replace different models of the anti-rebound mechanism 4, it can be quickly removed as if replacing mold inserts, greatly reducing downtime.

[0036] As one implementation method, such as Figure 3 , Figure 4 and Figure 5 As shown, the inner walls of both the mounting groove 9 and the limiting groove 10 are provided with matching polyurethane pads.

[0037] In this embodiment, polyurethane pads are installed in both the limiting groove 10 and the mounting groove 9. The polyurethane pads effectively absorb the kinetic energy of the template 1, achieving a smooth and gentle stop and eliminating impact noise and vibration.

[0038] As one implementation method, such as Figure 1 , Figure 2 and Figure 3 As shown, a limit rod 13 is fixedly installed on the outside of the template 1, and a stop post 14 is detachably installed at the end of the limit rod 13.

[0039] In this embodiment, before the mold is opened, the limiting rod 13 and the stop post 14 can limit the entire stroke of the male mold plate 1 and the female mold plate 2 when the mold is closed.

[0040] Working principle: When the male template 1 and female template 2 are closed, when the male template 1 moves to the set position, the limiting clamp 8 of the anti-rebound mechanism 4 will be engaged in the mounting groove 9. During the mold opening process, when the male template 1 moves to the set position, the limiting clamp 8 of the anti-rebound mechanism 4 will be engaged in the limiting groove 10, forming a mechanical limit.

[0041] The entire assembly is installed via positioning pin 5. When it is necessary to repair or replace different models of anti-rebound mechanism 4, it can be quickly removed like replacing mold inserts, greatly reducing downtime.

[0042] This structure effectively prevents the male template 1 from rebounding, ensuring a stable mold opening distance and facilitating the smooth removal of the material head. It effectively solves the problem of template rebound caused by the elasticity of the slider during the mold opening process of the three-plate mold, replacing the traditional unstable anti-slip method and improving the stability of mold operation and production efficiency.

[0043] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0044] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A three-plate mold anti-rebound structure, comprising a male mold plate (1) and a female mold plate (2), wherein a material guide plate (3) is provided between the male mold plate (1) and the female mold plate (2), and mold guide pillars (12) penetrate the interior of the male mold plate (1), the female mold plate (2) and the material guide plate (3), characterized in that, Multiple anti-rebound mechanisms (4) are fixedly installed around the male template (1) and female template (2); The anti-rebound mechanism (4) includes a mechanism rod (6) fixedly installed on the outside of the template (1), a guard plate (7) fixedly installed on the outside of the material feeding plate (3), the mechanism rod (6) penetrates the inside of the guard plate (7), a positioning block (11) is detachably installed inside the material feeding plate (3), a limit clamp (8) is fixedly installed at one end of the positioning block (11), and one end of the limit clamp (8) is chamfered; The mechanism rod (6) has an installation groove (9) and a limiting groove (10) on one side that correspond to the limiting clamp (8).

2. The three-plate mold anti-rebound structure according to claim 1, characterized in that, The mechanism rod (6) is provided with at least four sets of mounting grooves (9) and limiting grooves (10), which are arranged in parallel on one side of the mechanism rod (6). The size of the mounting groove (9) is larger than the size of the limiting groove (10).

3. The three-plate mold anti-rebound structure according to claim 1, characterized in that, The mother template (2) has a slot inside to accommodate the positioning block (11), and the slot is threadedly connected to the positioning block (11).

4. The three-plate mold anti-rebound structure according to claim 1, characterized in that, Positioning pins (5) are fixedly installed between the multiple sets of mechanism rods (6) and the male template (1), and between the multiple sets of positioning blocks (11) and the female template (2).

5. The three-plate mold anti-rebound structure according to claim 1, characterized in that, The inner walls of the mounting groove (9) and the limiting groove (10) are both provided with matching polyurethane pads.

6. The three-plate mold anti-rebound structure according to claim 1, characterized in that, The external fixed installation of the template (1) is a limiting rod (13), and the end of the limiting rod (13) is detachably installed with a stop post (14).

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