Submarine type glue feeding sliding block of injection mold
By designing a latent rubber-injection slide with inclined guide columns and inclined guide grooves in the injection mold, the problem of setting and ejection of the rubber-injection runner on the slide is solved, and the automatic ejection and material breakage of the rubber-injection parts is realized, and production efficiency and product quality are improved.
Patent Information
- Application Number
- CN202422574671.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-23
AI Technical Summary
In existing injection molds, it is difficult to set the latent rubber feeding runner on the slider and it is difficult to accurately eject the residual rubber feeding parts, which affects production efficiency.
A latent rubber-injection slider for injection molds is designed. Through the cooperation of the inclined guide column and the inclined guide groove, the movement of the slider is accurately controlled to ensure that the bottom slide groove of the slider is connected to the straight ejection rod, and the cooperation of the thrust pin and push plate is used to realize the automatic ejection and material breakage of the rubber-injection parts.
The precise movement of the slider and the automatic ejection of the plastic parts are achieved, avoiding impact caused by inaccurate position of the slider during the core extraction process, and improving production efficiency and product quality.
Smart Images
Figure CN223236850U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of injection molds and relates to a latent glue-feeding slider of an injection mold. Background Art
[0002] An injection mold is a device used to produce plastic products. Plastic particles are heated to a molten state and injected into a molding cavity set inside the mold from a feed port. When the molding cavity is filled, the plastic melt is cooled and formed inside the molding cavity to form a product corresponding to the molding cavity structure. Using injection molds to produce products has the advantages of high precision, high efficiency, and low cost. Therefore, injection molds are widely used in the production of plastic parts.
[0003] In the structure of an injection mold, an injection nozzle is usually used to connect the feed port and the molding cavity. However, the connection between the nozzle and the molding cavity is prone to form a plastic inlet part, which will be connected to the molded product. After the product is ejected from the injection mold, the plastic inlet part needs to be cut, polished, and other secondary processes, which reduces production efficiency.
[0004] To address the aforementioned issues, existing technologies utilize a latent glue-feeding structure. This involves providing a connected flow channel outside the molding cavity, with the bottom of the nozzle connected to the flow channel. This flow channel utilizes bottom feeding to reduce the size of the connection between the flow channel and the molding cavity. This allows any remaining glue-feeding components within the flow channel to be squeezed and broken during demolding, thus avoiding secondary processing. However, for some products, a snap-fit structure is required on all sides of the product, and the holes in the snap-fit require a core-pulling slider to form the holes. However, with a slider, there's insufficient space for the latent glue-feeding flow channel. If the flow channel is placed on the slider, it becomes difficult to eject any remaining glue-feeding components from the slider. Summary of the Invention
[0005] The purpose of the utility model is to address the problems existing in the existing technology and propose a latent glue feeding slider for an injection mold. The technical problem to be solved by the utility model is: how to set the latent glue feeding flow channel on the slider and accurately eject the glue feeding part formed on the slider.
[0006] The object of the utility model can be achieved through the following technical solutions: a latent glue-feeding slider of an injection mold, comprising a top plate, a fixed template, a movable template, a foot plate and a bottom plate, a molding cavity being provided between the fixed template and the movable template, a push plate being provided inside the foot plate for reciprocating movement, a plurality of fixedly connected straight ejector rods being provided on the push plate, the top of the straight ejector rod extending into the interior of the movable template and capable of being ejected from the movable template, a sliding block being slidably connected being provided on the side of the movable template, a glue-feeding channel being provided on the top of the slider, a glue-feeding channel being provided with a cooled and formed glue-feeding part being provided in the glue-feeding channel, a downwardly opening slide being provided inside the slider, the slide being provided directly below the glue-feeding channel, a slidingly connected ejector pin being provided inside the slide, the ejector pin being capable of being ejected from the bottom of the glue-feeding channel, an oblique inclined guide groove being provided on the outer side of the slider, an inclined guide column being fixedly connected being provided on the fixed template, the inclined guide column being inserted into the inclined guide groove and slidably connected, the inclined guide column moving upward pushes the slider outward so that the slide groove inside the slider moves to directly above the straight ejector pin.
[0007] In this solution, a glue feed channel is provided on the top of the slider, which is connected to the molding cavity. The molten plastic flows into the glue feed channel and then into the molding cavity, and glue is fed into the molding cavity in a latent manner. During the demolding process, the movable template is moved by an external device. When the movable template is separated from the fixed template, the slider on the movable template moves to the end away from the molding cavity under the guidance of the inclined guide column. In this structure, the inclination angles of the inclined guide column and the inclined guide groove are also adjusted so that after the movable template is completely separated from the fixed template, the inclined guide column can just push the slide groove at the bottom of the slider to just above the straight ejector rod, and then push the push plate to drive the straight ejector rod to be ejected upward. The straight ejector rod enters from the bottom of the slide groove and pushes the ejector pin upward so that the ejector pin extends from the inside of the glue feed channel, thereby ejecting the remaining glue feeding parts inside the glue feed channel. Through the above method, the structure of the inclined guide column and the inclined guide groove is used to push the slider to move outward, and the slider can be accurately controlled to move to a specific position, that is, the slide groove at the bottom of the slider is docked with the straight push rod inside the movable template, thereby avoiding the situation in which the slider moves inaccurately during the core pulling process, resulting in the straight push rod colliding with the bottom of the slider and causing the straight push rod to be crooked.
[0008] In the aforementioned latent injection mold's slide, the ejector pin has an abutment at its base and a return spring located outside the pin. The return spring's upper end abuts the top of the chute, while its lower end abuts the abutment. After the push plate and straight ejector rod are pushed downward and reset, the return spring inside the chute automatically pushes the ejector pin downward, retracting it into the injection channel to await the next round of ejection.
[0009] In the aforementioned latent-type injection mold, a gate is provided at the junction of the injection flow channel and the molding cavity, and a material cutoff portion is provided on the slider, located above the gate. As the inclined guide post pushes the slider outward, the material cutoff portion on the slider abuts against the injection molding component in the injection flow channel, thereby breaking the molding component and achieving an automatic material cutoff function.
[0010] In the aforementioned latent injection mold, a molding section is provided at the junction of the slider and the molding cavity, and some of the straight ejector pins are located at the bottom of the molding cavity. The molding section on the slider is used to form the aforementioned hole structure. Before demolding, the slider is withdrawn to prevent interference between the molding section and the product. Some of the straight ejector pins are located at the bottom of the molding cavity to eject the product upward.
[0011] In the latent glue-feeding slider of the above-mentioned injection mold, a fixed active rod is provided on the fixed mold plate, a driven rod is provided on the movable mold plate, and a fixed connecting block is provided on the foot plate. One end of the driven rod is hinged to the movable mold plate, and the other end is in contact with both the active rod and the connecting block. When the mold is opened, the movable mold plate moves away from the active rod so that the outer side of the driven rod is no longer in contact with the rod. When the push plate is pushed up, the connecting block pushes the driven rod to rotate upward. When the mold is closed, the movable mold plate approaches the fixed mold plate, and the active rod on the fixed mold plate presses down the driven rod to rotate downward. The driven rod presses down the connecting block on the push plate, so that the push plate can be completely reset to the bottom of the inner side of the foot plate, thereby pulling the straight ejector pin back into the movable mold plate, avoiding the problem of incomplete reset of the straight ejector pin and the collision of the slider with the straight ejector pin during the reset process.
[0012] In the aforementioned latent injection slider of the injection mold, a downward-extending limit block is provided at the bottom of the sidewall of the movable platen, and a clamping block is provided on the push plate, which abuts against the limit block. The clamping block is fixedly connected to the push plate. After the push plate moves up a certain distance, the clamping block abuts against the limit block, preventing the push plate from moving further upward, thereby precisely controlling the distance the push plate is ejected.
[0013] In the aforementioned latent injection mold slider, a feed port is provided on the top plate, and a diverter plate is positioned between the top plate and the fixed plate. The bottom of the feed port is connected to the diverter plate, and several nozzles are fixedly mounted on the bottom of the diverter plate. These nozzles pass through the fixed plate and communicate with the injection flow channel. Molten plastic is injected through the feed port, diverted by the diverter plate, and then injected into the injection flow channel through the nozzles at the bottom.
[0014] Compared with the prior art, the utility model has the following advantages:
[0015] 1. In this solution, after the movable platen is separated from the fixed platen, the slider on the movable platen moves to the end away from the molding cavity under the guidance of the inclined guide pillar. The inclined guide pillar can just push the chute at the bottom of the slider to the top of the straight ejector rod, and then push the push plate to drive the straight ejector rod upward. The straight ejector rod enters from the bottom of the chute and pushes the ejector pin upward, so that the ejector pin extends from the inside of the glue feed channel, thereby ejecting the remaining glue feed parts inside the glue feed channel.
[0016] 2. In this solution, the inclination angles of the inclined guide pillars and inclined guide grooves are adjusted, which can accurately control the slider to move to a specific position, that is, the slide groove at the bottom of the slider is docked with the straight push rod inside the movable template, avoiding the situation in which the slider moves inaccurately during the core pulling process, resulting in the straight push rod colliding with the bottom of the slider and causing the straight push rod to be crooked.
[0017] 3. In this solution, when the mold is closed, the movable platen approaches the fixed platen, the active rod on the fixed platen presses down the driven rod to rotate downward, and the driven rod presses down the connecting block on the push plate, so that the push plate can be completely reset to the bottom of the inner side of the foot plate, thereby pulling the straight ejector rod back into the movable platen, avoiding the problem of incomplete reset of the straight ejector rod and the collision of the slider with the straight ejector pin during the reset process. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;
[0020] Figure 3 This is a schematic diagram of the internal half-section structure of the slider of the utility model when viewed from above;
[0021] Figure 4 yes Figure 3 Schematic diagram of the local enlarged structure in;
[0022] Figure 5 It is a structural schematic diagram of the utility model when the slider is in the pulled-out state.
[0023] In the figure, 1, ejector plate; 1a, feed port; 1b, diverter plate; 1c, nozzle; 2, fixed template; 2a, active rod; 2b, inclined guide column; 3, movable template; 3a, driven rod; 3b, limit block; 4, foot plate; 4a, push plate; 4b, connecting block; 4c, clamping block; 4d, straight ejector rod; 5, bottom plate; 6, slider; 6a, glue feed channel; 6a1, gate; 6a2, glue feed part; 6b, inclined guide groove; 6c, cutting part; 6d, molding part; 7, slide; 7a, ejector pin; 7a1, abutment part; 7b, return spring; 8, molding cavity. DETAILED DESCRIPTION
[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0025] Example
[0026] like Figure 1 As shown, the latent glue feeding slider of the injection mold includes a top plate 1, a fixed mold plate 2, a movable mold plate 3, a foot plate 4 and a bottom plate 5. The top plate 1 is provided with a feed port 1a, and the foot plate 4 is provided with a reciprocating push plate 4a inside.
[0027] like Figure 2 As shown, the fixed template 2 is provided with a fixed active rod 2a, the movable template 3 is provided with a driven rod 3a, the foot plate 4 is provided with a fixed connecting block 4b, one end of the driven rod 3a is hinged to the movable template 3, and the other end is simultaneously abutted against the active rod 2a and the connecting block 4b, the bottom of the side wall of the movable template 3 is provided with a downwardly extending limit block 3b, the push plate 4a is provided with a clamping block 4c abutting against the limit block 3b, and the clamping block 4c is fixedly connected to the push plate 4a.
[0028] like Figure 3 Combine Figure 4 As shown, a molding cavity 8 is provided between the movable template 3 and the fixed template 2, a diverter plate 1b is provided between the top plate 1 and the fixed template 2, the bottom of the feed port 1a is connected to the diverter plate 1b, and a plurality of fixed nozzles 1c are provided at the bottom of the diverter plate 1b. A sliding block 6 is provided on the side of the movable template 3, a glue feed channel 6a is provided on the top of the slider 6, the nozzle 1c passes through the fixed template 2 and is connected to the glue feed channel 6a, a gate 6a1 is provided at the connection between the glue feed channel 6a and the molding cavity 8, a cutting portion 6c is provided on the slider 6, and the cutting portion 6c is provided above the gate 6a1, a downward-opening chute 7 is provided inside the slider 6, and the chute 7 is provided at the feed port Directly below the glue flow channel 6a, a slidingly connected ejector pin 7a is provided inside the slide groove 7, and the ejector pin 7a can be ejected from the bottom of the glue feed channel 6a. The bottom of the ejector pin 7a is provided with a supporting portion 7a1, and a return spring 7b is provided on the outside of the ejector pin 7a. The upper end of the return spring 7b is in contact with the top of the slide groove 7, and the lower end is in contact with the supporting portion 7a1. The push plate 4a is provided with a plurality of fixedly connected straight ejector pins 4d, and the top end of the straight ejector pins 4d extends to the interior of the movable template 3 and can be ejected from the movable template 3. The outside of the slider 6 is provided with an oblique inclined guide groove 6b, and the fixed template 2 is provided with a fixedly connected inclined guide column 2b, which is inserted into the inclined guide groove 6b and slidably connected.
[0029] like Figure 5As shown, the inclined guide column 2b moves upward to push the slider 6 outward, so that the slide groove 7 inside the slider 6 moves to just above the straight push rod 4d, and the push plate 4a and the straight push rod 4d move upward to push the ejector pin 7a out from the bottom of the glue feed channel 6a, thereby ejecting the glue feed part 6a2 remaining inside the glue feed channel 6a. A molding part 6d is provided at the connection between the slider 6 and the molding cavity 8, and part of the straight push rod 4d is provided at the bottom of the molding cavity 8.
[0030] The working principle of this scheme is as follows: Figure 1-5 As shown, the plastic melt heated to a molten state is injected from the feed port 1a, diverted by the manifold 1b, and then injected into the glue feed channel 6a from the bottom nozzle 1c. The melt flows into the molding cavity 8 from the gate 6a1. When the molding cavity 8 is filled, the plastic melt cools and forms inside the molding cavity 8. The movable platen 3 is then moved to open the mold. Since the inclined guide posts 2b on the fixed platen 2 are fixed, the slider 6 on the movable platen 3 is withdrawn outward along the direction of the inclined guide posts 2b. At the same time, the material breaking portion 6c on the slider 6 abuts against the glue feed piece 6a2 in the glue feed channel 6a, thereby breaking the glue feed piece 6a2 and achieving automatic material breaking. When the movable template 3 is fully opened, the slider 6 is driven to the specified position by the inclined guide column 2b, that is, the slide groove 7 at the bottom of the slider 6 is docked with the straight ejector rod 4d inside the movable template 3, and then the push plate 4a is pushed, so that the push plate 4a drives the straight ejector rod 4d to be ejected upward, and the straight ejector rod 4d enters from the bottom of the slide groove 7 and pushes the ejector pin 7a upward, so that the ejector pin 7a extends from the inside of the glue feed channel 6a, thereby ejecting the remaining glue feed parts 6a2 inside the glue feed channel 6a, and the straight ejector rod 4d arranged at the bottom of the molding cavity 8 can eject the product in the molding cavity 8 at the same time.
[0031] During the mold closing process, the movable template 3 approaches the fixed template 2, and the active rod 2a on the fixed template 2 presses down the driven rod 3a to rotate downward, and the driven rod 3a presses down the connecting block 4b on the push plate 4a, so that the push plate 4a can be completely reset to the bottom of the inner side of the foot plate 4, thereby pulling the straight ejector rod 4d back into the movable template 3, avoiding the problem of incomplete reset of the straight ejector rod 4d and collision between the slider 6 and the straight ejector pin 7a. At the same time, the reset spring 7b in the slide groove 7 pushes the ejector pin 7a downward to reset, and the inclined guide column 2b is inserted into the back inclined guide groove 6b to reset the slider 6.
[0032] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.
[0033] Although this article frequently uses terms such as 1. ejector plate; 1a. feed port; 1b. manifold; 1c. nozzle; 2. fixed plate; 2a. active rod; 2b. inclined guide column; 3. movable plate; 3a. driven rod; 3b. limit block; 4. foot plate; 4a. push plate; 4b. connecting block; 4c. clamping block; 4d. straight ejector; 5. bottom plate; 6. slider; 6a. glue feed channel; 6a1. gate; 6a2. glue feed part; 6b. inclined guide groove; 6c. material cutting part; 6d. molding part; 7. chute; 7a. ejector pin; 7a1. abutting part; 7b. return spring; 8. molding cavity, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.
Claims
1. A latent glue-feeding slider for an injection mold, comprising a top plate (1), a fixed mold plate (2), a movable mold plate (3), a foot plate (4) and a bottom plate (5), wherein a molding cavity (8) is provided between the fixed mold plate (2) and the movable mold plate (3), a reciprocating push plate (4a) is provided inside the foot plate (4), and a plurality of fixedly connected straight push rods (4d) are provided on the push plate (4a), the top ends of the straight push rods (4d) extend into the interior of the movable mold plate (3) and can be ejected from the movable mold plate (3), characterized in that: The movable template (3) is provided with a sliding slider (6) on the side, a glue feed channel (6a) is provided on the top of the slider (6), a glue feed part (6a2) formed by cooling is provided in the glue feed channel (6a), a downward-opening chute (7) is provided inside the slider (6), the chute (7) is provided just below the glue feed channel (6a), a sliding-connected ejector pin (7a) is provided inside the chute (7), and the ejector pin (7a) can be ejected from the bottom of the glue feed channel (6a), an oblique guide groove (6b) is provided on the outside of the slider (6), and a fixed oblique guide column (2b) is provided on the fixed template (2), the oblique guide column (2b) is inserted into the oblique guide groove (6b) and is slidably connected, and the oblique guide column (2b) moves upward to push the slider (6) outward, so that the slide groove (7) inside the slider (6) moves to just above the straight ejector rod (4d).
2. The latent glue-feeding slider of an injection mold according to claim 1, characterized in that: The bottom of the ejector pin (7a) is provided with a supporting portion (7a1), and the outer side of the ejector pin (7a) is provided with a return spring (7b), the upper end of the return spring (7b) is in contact with the top of the slide groove (7), and the lower end is in contact with the supporting portion (7a1).
3. The latent glue-feeding slider of the injection mold according to claim 2, characterized in that: A gate (6a1) is provided at the connection between the glue inlet flow channel (6a) and the molding cavity (8), and a material cutting portion (6c) is provided on the slider (6), and the material cutting portion (6c) is arranged above the gate (6a1).
4. The latent glue-feeding slider of the injection mold according to claim 3, characterized in that: A forming portion (6d) is provided at the connection between the slider (6) and the forming cavity (8), and part of the straight push rod (4d) is provided at the bottom of the forming cavity (8).
5. The latent glue-feeding slider of an injection mold according to claim 1, characterized in that: The fixed plate (2) is provided with a fixed active rod (2a), the movable plate (3) is provided with a driven rod (3a), and the foot plate (4) is provided with a fixed connecting block (4b). One end of the driven rod (3a) is hinged to the movable plate (3), and the other end is simultaneously in contact with the active rod (2a) and the connecting block (4b).
6. The latent glue-feeding slider of an injection mold according to claim 1, characterized in that: A downwardly extending limit block (3b) is provided at the bottom of the side wall of the movable template (3); a clamping block (4c) abutting against the limit block (3b) is provided on the push plate (4a); and the clamping block (4c) is fixedly connected to the push plate (4a).
7. The latent glue-feeding slider of an injection mold according to claim 1, characterized in that: A feed port (1a) is provided on the top plate (1), a diverter plate (1b) is provided between the top plate (1) and the fixed die plate (2), the bottom of the feed port (1a) is connected to the diverter plate (1b), and a plurality of fixed nozzles (1c) are provided at the bottom of the diverter plate (1b), the nozzles (1c) pass through the fixed die plate (2) and are connected to the glue feed channel (6a).