Fixed-distance core-pulling mold structure without ejection mechanism

Abstract

The utility model provides a fixed-distance core-pulling mold structure without an ejection mechanism, which comprises a panel, a runner plate, a fixed mold plate, a movable mold plate, a base plate and a bottom plate, an upper mold core is embedded at the bottom of the fixed mold plate, an upper forming groove is formed in the upper mold core, a pull rod is arranged on the side surface of the fixed mold plate, and a strip-shaped hole is formed in one end, extending downwards, of the pull rod; a lower mold core, a base and a push block are arranged on the movable mold plate, a lower forming groove is formed in the lower mold core, a plurality of mold cores are arranged on the end face, facing the lower mold core, of the base, the push block is arranged between the lower mold core and the base, a first guide hole is formed in the push block, a guide rod is arranged on the side face of the movable mold plate, guide grooves are formed in the two end faces of the base, and protruding parts are arranged at the two ends of the push block. When the lower edge of the strip-shaped hole of the pull rod abuts against the protruding part, the push block, the lower mold core and the lower mold plate are driven to be separated, meanwhile, the guide groove moves along the guide rod to drive the push block and the base to be separated, a product is separated from the mold core, and the complexity of a mold ejection mechanism is simplified; and the overall cost of the mold is also reduced.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a fixed-distance core-pulling mold structure without an ejection mechanism. Background Art

[0002] Moulds are tools used to make shaped products. Products of different shapes can be made by using different shapes of moulds, such as Figure 1 The toothbrush head cover shown in the figure is made of one-piece injection molding and has a deeper cavity. After the product is formed, it needs to be pulled out from the core. The traditional mold core pulling structure relies on the cooperation of the complex slider and ejection structure set inside the mold, which not only increases the difficulty of mold design, but also significantly increases the production cost. Therefore, an optimized mold structure is urgently needed to realize the core pulling of the product. Utility Model Content

[0003] The utility model provides a fixed-distance core-pulling mold structure without an ejection mechanism, aiming to solve the technical problems mentioned in the above technical background.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a fixed-distance core-pulling mold structure without an ejection mechanism, comprising a panel, a runner plate, a fixed mold plate, a movable mold plate, a pad and a bottom plate from top to bottom, an upper mold core is embedded in the bottom of the fixed mold plate, the upper mold core has a plurality of upper forming grooves, a pull rod is provided on the side of the fixed mold plate, and a strip hole is provided at the downwardly extending end of the pull rod; a lower mold core, a base and a push block are provided on the movable mold plate, the lower mold core has a plurality of lower forming grooves, a plurality of cores are provided on an end surface of the base facing the lower mold core, the push block is interposed between the lower mold core and the base, the push block has a plurality of first guide holes for the cores to pass through, an inclined guide rod is provided on the side of the movable mold plate, and inclined guide grooves are provided on both end surfaces of the base, protrusions are provided at both ends of the push block, and the protrusions are placed in the strip holes.

[0005] Furthermore, a guide column is provided on a side of the lower mold core close to the base, and the push block is provided with a second guide hole for the guide column to pass through.

[0006] Furthermore, a plurality of springs are provided between the base and the push block.

[0007] Furthermore, limiting guide rods are further installed on both sides of the fixed template and the movable template, and limiting columns are set on the sides of the fixed template and the movable template. The limiting guide rods have limiting holes, and the limiting columns are placed in the limiting holes.

[0008] Furthermore, a wedge-shaped pressing block is installed at the bottom of the fixed mold plate, and the wedge-shaped pressing block is arranged on one side of the upper mold core.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] The utility model discloses a fixed-distance core-pulling mold structure without an ejection mechanism, comprising a panel, a runner plate, a fixed mold plate, a movable mold plate, a pad and a bottom plate. An upper mold core is embedded in the bottom of the fixed mold plate, and a plurality of upper forming grooves are opened on the upper mold core. A pull rod is arranged on the side of the fixed mold plate, and a strip hole is opened on the end of the pull rod extending downward; a lower mold core, a base and a push block are arranged on the movable mold plate, and a plurality of lower forming grooves are opened on the lower mold core. A plurality of cores are arranged on one end surface of the base facing the lower mold core, and the push block is interposed between the lower mold core and the base. The block is provided with several first guide holes for the core to pass through, a guide rod is provided on the side of the movable template, and guide grooves are provided on both end surfaces of the base. Protrusions are provided at both ends of the push block, and the protrusions are placed in the strip holes. When the mold is opened, the movable template and the fixed template are separated. When the lower side of the strip hole of the pull rod hits the protrusion, the push block and the lower mold core are separated from the lower template. At the same time, the guide groove moves along the guide rod to drive the separation of the push block and the base, and the product is ejected from the core, which simplifies the complexity of the mold ejection mechanism and reduces the overall cost of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 It is a schematic diagram of the structure of the toothbrush head cover;

[0013] Figure 2 This is a schematic diagram of the structure of a fixed-distance core-pulling mold without an ejection mechanism of the utility model;

[0014] Figure 3 This is a schematic diagram of the mold opening structure of the fixed platen and the movable platen of the fixed-distance core-pulling mold structure without an ejection mechanism of the utility model;

[0015] Figure 4 This is a schematic diagram of the exploded structure of the movable platen of the fixed-distance core-pulling die structure without an ejection mechanism of the utility model;

[0016] Figure 5 This is a structural schematic diagram of the movable platen of the fixed-distance core-pulling die structure without an ejection mechanism of the utility model;

[0017] Figure 6 The utility model is a structural schematic diagram of a fixed platen of a fixed-distance core-pulling die structure without an ejection mechanism.

[0018] Description of main component symbols

[0019] 10. Panel;

[0020] 20. Runner plate;

[0021] 30, fixed template; 301, upper die core; 3011, upper forming groove; 302, pull rod; 303, wedge-shaped pressure block; 304, limit guide rod;

[0022] 40, movable platen; 401, lower die core; 4011, lower forming groove; 4012, guide post; 402, base; 4021, core; 4022, guide groove; 403, push block; 4031, protrusion; 404, guide rod;

[0023] 50. Pad;

[0024] 60. Bottom plate;

[0025] 70. Toothbrush head cover. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] Example

[0030] Figure 1 The toothbrush head cover 70 shown is made of one-piece injection molding.

[0031] Reference Figure 2-6 As shown, the utility model discloses a fixed-distance core-pulling mold structure without an ejection mechanism, including a panel 10, a runner plate 20, a fixed mold plate 30, a movable mold plate 40, a pad 50 and a bottom plate 60 from top to bottom, an upper mold core 301 is embedded in the bottom of the fixed mold plate 30, and the upper mold core 301 is provided with a plurality of upper molding grooves 3011, a lower mold core 401, a base 402 and a push block 403 are provided on the movable mold plate 40, the lower mold core 401 is provided with a plurality of lower molding grooves 4011, and a plurality of cores 4021 are provided on one end surface of the base 402 facing the lower mold core 401, and the push block 403 is located between the lower mold core 401 and the base 402, and the push block 403 is provided with a plurality of first guide holes for the cores 4021 to pass through. Specifically, when the mold is closed, the fixed mold plate 30 and the movable mold plate 40 are closed, driving the upper mold core 301 and the lower mold core 401 to close, and the upper molding groove 3011 and the lower molding groove 4011 are closed to form a molding cavity. The core 4021 on the side of the base 402 is placed in the cavity through the push block 403 to injection mold the toothbrush head cover 70.

[0032] Furthermore, a wedge-shaped pressing block 303 is installed at the bottom of the fixed mold plate 30. The wedge-shaped pressing block 303 is set on one side of the upper mold core 301. When the mold is closed, the wedge-shaped block presses the base 402 on the push plate, so that the core 4021 extends into the cavity into place.

[0033] Reference Figure 2-6As shown, a pull rod 302 is provided on the side of the fixed plate 30, and a strip hole is formed at one end of the pull rod 302 extending downward; a guide rod 404 is provided on the side of the movable plate 40, and guide grooves 4022 are formed on both end surfaces of the base 402. A protrusion 4031 is provided at both ends of the push block 403, and the protrusion 4031 is placed in the strip hole. Specifically, when the mold is opened, the movable plate 40 and the fixed plate 30 are separated, and the upper mold core 301 and the lower mold core 401 are separated. The product stays in the lower mold core 401. When the lower end of the strip hole of the pull rod 302 on the side of the fixed plate 30 abuts against the protrusion 4031 and continues to move upward, the push block 403 is driven to move upward together with the base 402, and the product is removed from the lower mold core 401. At the same time, the guide groove 4022 of the base 402 moves obliquely upward along the guide rod 404 of the movable plate 40, and the push block 403 pushes the product to separate from the core 4021.

[0034] Reference Figure 3-5 As shown, a guide post 4012 is provided on one side of the lower mold core 401 near the base 402, and a second guide hole is provided in the push block 403 for the guide post 4012 to pass through. When the pull rod 302 pulls the push block 403 upward, the push block 403 moves along the guide post 4012, causing the push block 403 to move vertically. Furthermore, several springs are provided between the base 402 and the push block 403 to assist in separating the base 402 and the push block 403.

[0035] Reference Figure 2-3 As shown, limiting guide rods 304 are further installed on both sides of the fixed platen 30 and the movable platen 40. Limiting posts are also provided on the sides of both the fixed platen 30 and the movable platen 40. The limiting guide rods 304 have limiting holes, and the limiting posts are placed in the limiting holes. Specifically, when the fixed platen 30 and the movable platen 40 are separated, the limiting holes of the limiting pull rods 302 move along the limiting posts. When the limiting holes contact the limiting posts, the movable platen 40 and the fixed platen 40 reach their maximum opening range, thus serving as a limiter.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fixed-distance core-pulling mold structure without an ejection mechanism, characterized by: It includes a panel, a runner plate, a fixed template, a movable template, a pad and a bottom plate from top to bottom, an upper mold core is embedded in the bottom of the fixed template, the upper mold core is provided with a plurality of upper forming grooves, a pull rod is provided on the side of the fixed template, and a strip hole is provided at the downwardly extending end of the pull rod; a lower mold core, a base and a push block are provided on the movable template, the lower mold core is provided with a plurality of lower forming grooves, a plurality of cores are provided on an end surface of the base facing the lower mold core, the push block is interposed between the lower mold core and the base, the push block is provided with a plurality of first guide holes for the core to pass through, an inclined guide rod is provided on the side of the movable template, and inclined guide grooves are provided on both end surfaces of the base, protrusions are provided at both ends of the push block, and the protrusions are placed in the strip holes.

2. The fixed-distance core-pulling mold structure without an ejection mechanism according to claim 1, characterized in that: A guide column is provided on one side of the lower die core close to the base, and a second guide hole is provided on the push block for the guide column to pass through.

3. The fixed-distance core-pulling mold structure without an ejection mechanism according to claim 1, characterized in that: A plurality of springs are arranged between the base and the push block.

4. The fixed-distance core-pulling mold structure without an ejection mechanism according to claim 1, characterized in that: Limiting guide rods are further installed on both sides of the fixed template and the movable template. Limiting columns are set on the sides of the fixed template and the movable template. The limiting guide rods have limiting holes, and the limiting columns are placed in the limiting holes.

5. The fixed-distance core-pulling mold structure without an ejection mechanism according to claim 1, characterized in that: A wedge-shaped pressing block is installed at the bottom of the fixed mold plate, and the wedge-shaped pressing block is arranged on one side of the upper mold core.

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