A mold core structure for a plastic mold

Abstract

The utility model discloses a kind of mould core structures for plastic mould, it is related to the technical field of plastic mould, including work tank and the work groove of work tank top surface opening, the top of the work groove is equipped with mould core block.The utility model uses when using mould core block and inserts to the surface of ejection block to correct angle, when making mould core block press down, drive the clamping block fixedly connected with the bottom surface and the clamping block of two sides contact, the spring of two clamping blocks displacement extrusion side, make the clamping block first sliding slot and second sliding slot be matched, so that the clamping block enters the inside of clamping groove, subsequently using the elastic clamping of spring and hold entire clamping block, finally when mould shaping, press down mould core block again to make ejection block extend out ejection mould, make the device produce clamping mould core block, simultaneously, still have the effect that mould core block internal mould ejects, to improve the use effect of device.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold technology, and in particular to a mold core structure for plastic molds. Background Technology

[0002] Molds are tools used in the plastics processing industry in conjunction with plastic molding machines to give plastic products a complete shape and precise dimensions. Due to the wide variety of plastics and processing methods, as well as the varying complexity of plastic molding machines and plastic products, plastic molds also come in a variety of types and structures. Generally, a plastic mold consists of two parts: a moving mold core and a fixed mold core. The moving mold core is installed on the moving platen of the injection molding machine, while the fixed mold core is installed on the fixed platen. During injection molding, the moving mold core and the fixed mold core close to form the gating system and the cavity. When the mold is opened, the moving mold core and the fixed mold core separate to remove the plastic product.

[0003] The applicant discovered through a search that a Chinese patent discloses "A mold core structure for a plastic mold," publication number "CN208946576U," which includes a fixed block, a fixed plate, a sleeve, a rotating tube, a top plate, a push rod, a threaded tube, a threaded rod, a top block, a slide groove, and a snap-fit ​​device. The fixed plate is movably fitted inside the top of the fixed block. A sleeve is fixedly installed in the middle of the top of the fixed plate, and a rotating tube is movably fitted in the middle of the inner side of the sleeve. The bottom of the rotating tube's inner cavity is movably fitted with a top plate, and a push rod is fixedly installed in the middle of the bottom end of the top plate. This fixed mold core for a plastic mold allows the fixed plate and threaded tube to rotate by rotating the sleeve, and the length of the threaded rod can be adjusted. The height of the top block can be adjusted via the threaded rod, allowing the top block to control the extension and retraction of the two snap-fit ​​devices. This effectively improves the convenience of replacing the fixed mold core and solves the problem of cumbersome procedures when replacing existing fixed mold cores.

[0004] However, existing fixed mold cores cannot achieve quick installation and disassembly. In addition, the cost of fixed mold cores is too high. If they are replaced or repaired, they cannot be disassembled in time, which may cause damage. Furthermore, the mold formed inside the fixed mold core cannot be ejected. Utility Model Content

[0005] The purpose of this utility model is to provide a mold core structure for plastic molds, so as to solve the problems mentioned in the background art, such as the high cost of fixed mold cores, damage caused by the inability to disassemble them in time when replacing or repairing them, and the inability of the mold formed inside the fixed mold core to be ejected.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mold core structure for a plastic mold, including a working box and a working groove opened on the top surface of the working box. A mold core block is provided at the top of the working groove. An ejector block that can eject the mold inside the mold core block is fixedly connected to the bottom surface of the inner wall of the working groove. Clamping structures are slidably connected to both sides of the bottom surface of the inner wall of the working groove on both sides of the ejector block, which can clamp the mold core block to achieve the effects of clamping and ejection during shaping. Control structures are provided on both sides inside the working box to provide a release effect to the clamping structures.

[0007] Preferably, a clamping block is fixedly connected to the bottom surface of the mold core block, and a first sliding groove is provided on one side of the surface of the clamping block.

[0008] Preferably, the interior of the clamping block is slidably connected to the surface of the ejector block, and the top of the ejector block extends to the bottom surface of the inner wall of the mold core block.

[0009] Preferably, the clamping structure includes clamping blocks and second sliding grooves. The two clamping blocks are located on both sides of the bottom surface of the inner wall of the working groove, and the two second sliding grooves are opened on the top surface of the two clamping blocks.

[0010] Preferably, the clamping structure further includes clamping grooves, extension blocks, and pulleys. The two clamping grooves are each opened on the opposite side of the two clamping blocks, the two extension blocks are each fixedly connected to the bottom surface of the two clamping blocks, and the multiple pulleys are each rotatably connected to both sides of the surface of the two clamping blocks.

[0011] Preferably, the control structure further includes working cavities and working rods. The two working cavities are opened on both sides inside the working box, and the two working rods are slidably connected to both sides inside the working box. The opposite ends of the two working rods extend into the interior of the working groove and are fixedly connected to the opposite side of the two clamping blocks.

[0012] Preferably, the control structure further includes fixing blocks and springs. The two fixing blocks are fixedly connected to one side of the walls of the two working rods and are located inside the two working cavities respectively. The two springs are fixedly connected to one side of the two fixing blocks and the inner walls of the two working cavities.

[0013] Preferably, the surfaces of the two first sliding grooves are slidably connected to the surfaces of the two second sliding grooves, and both sides of the clamping block surface are respectively paired with the two clamping grooves.

[0014] The technical effects and advantages of this utility model are as follows: When in use, the mold core block is inserted into the surface of the ejector block to correct the angle. When the mold core block is pressed down, it drives the clamping block fixedly connected to the bottom surface to contact the clamping blocks on both sides. The displacement of the two clamping blocks compresses the springs on both sides, so that the first sliding groove of the clamping block matches the second sliding groove, thereby allowing the clamping block to enter the interior of the clamping groove. Then, the elasticity of the springs clamps the entire clamping block. Finally, when the mold is set, the mold core block is pressed down again to make the ejector block extend out of the ejector mold. This device not only clamps the mold core block, but also ejects the mold inside the mold core block, thereby improving the effectiveness of the device. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a front cross-sectional view of the present invention.

[0017] Figure 3 For the present utility model Figure 2 Enlarged structural diagram of section A in the middle.

[0018] Figure 4 This is a three-dimensional structural diagram of the clamping structure of this utility model.

[0019] In the diagram: 1. Working box; 2. Working groove; 3. Mold core block; 301. Clamping block; 302. First slide groove; 4. Ejection block; 5. Clamping structure; 501. Holding block; 502. Second slide groove; 503. Holding groove; 504. Extension block; 505. Pulley; 6. Control structure; 601. Working cavity; 602. Working rod; 603. Fixing block; 604. Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0021] like Figures 1 to 4As shown, a mold core structure for a plastic mold in the first aspect embodiment of the present invention includes a working box 1 and a working groove 2 opened on the top surface of the working box 1. A mold core block 3 is provided on the top of the working groove 2. An ejector block 4 that can eject the mold inside the mold core block 3 is fixedly connected to the bottom surface of the inner wall of the working groove 2. Clamping structures 5 are slidably connected on both sides of the bottom surface of the inner wall of the working groove 2 at the ejector block 4, which can clamp the mold core block 3 to achieve the effect of clamping and ejecting during shaping. Control structures 6 are provided on both sides inside the working box 1, which can provide the clamping structure 5 with the effect of releasing the clamping.

[0022] The technical effects achieved by the above embodiments are as follows: When this utility model is used, the mold core block 3 is inserted into the surface of the ejector block 4 to correct the angle. When the mold core block 3 is pressed down, the clamping block 301 fixedly connected to the bottom surface is released from the clamping blocks 501 on both sides. The two clamping blocks 501 are displaced and squeeze the springs 604 on both sides, so that the first slide groove 302 and the second slide groove 502 of the clamping block 501 are matched, so that the clamping block 501 enters the interior of the clamping groove 503. Then, the elasticity of the spring 604 is used to clamp the entire clamping block 301. Finally, when the mold is shaped, the mold core block 3 is pressed down again to make the ejector block 4 extend out of the ejector mold. The device clamps the mold core block 3 and also ejects the mold inside the mold core block 3, thereby improving the use effect of the device. Example

[0023] like Figure 1 and Figure 3 As shown, a mold core structure for a plastic mold includes all the contents of Embodiment 1. In addition, a clamping block 301 is fixedly connected to the bottom surface of the mold core block 3. A first sliding groove 302 is provided on one side of the surface of the clamping block 301. The interior of the clamping block 301 is slidably connected to the surface of the ejector block 4, and the top of the ejector block 4 extends to the bottom surface of the inner wall of the mold core block 3.

[0024] The technical effect achieved by the above embodiment is that the clamping block 301 can be matched with the inside of the clamping groove 503, and the surfaces of the first slide groove 302 and the second slide groove 502 are matched, so that the clamping block 301 can better enter the inside of the clamping groove 503. Example

[0025] like Figures 2 to 4As shown, a mold core structure for a plastic mold includes all the contents of Embodiment 2. In addition, the clamping structure 5 includes clamping blocks 501 and second sliding grooves 502. The two clamping blocks 501 are both located on both sides of the bottom surface of the inner wall of the working groove 2. The two second sliding grooves 502 are opened on the top surface of the two clamping blocks 501. The clamping structure 5 also includes clamping grooves 503, extension blocks 504, and pulleys 505. The two clamping grooves 503 are both opened on the opposite side of the two clamping blocks 501. The two extension blocks 504 are both fixedly connected to the bottom surface of the two clamping blocks 501. The multiple pulleys 505 are rotatably connected to both sides of the surface of the two clamping blocks 501.

[0026] The technical effect achieved by the above embodiment is as follows: When the core block 3 descends and drives the clamping block 301 to move, the clamping block 501 first uses the first sliding groove 302 on both sides to slide in pairs with the second sliding groove 502. At the same time, the clamping block 301 is located inside the clamping groove 503 while sliding and matching, thereby forming a clamping and fixing effect. However, when the clamping block 501 is displaced, the two pulleys 505 at the bottom will also be used to generate a displacement effect. Example

[0027] like Figure 1 and Figure 2 As shown, a mold core structure for a plastic mold includes all the contents of Embodiment 3. In addition, the control structure 6 also includes a working cavity 601 and a working rod 602. The two working cavities 601 are opened on both sides inside the working box 1. The two working rods 602 are slidably connected to both sides inside the working box 1, and the opposite ends of the two working rods 602 extend into the interior of the working groove 2 and are fixedly connected to the opposite side of the two clamping blocks 501. The control structure 6 also includes a fixing block 603 and a spring 604. The two fixing blocks 603 are fixedly connected to one side of the rod wall of the two working rods 602 and are located inside the two working cavities 601 respectively. The two springs 604 are fixedly connected to one side of the inner wall of the two fixing blocks 603 and the two working cavities 601. The surfaces of the two first sliding grooves 302 are slidably connected to the surfaces of the two second sliding grooves 502, and both sides of the surface of the clamping block 301 are respectively paired with the two clamping grooves 503.

[0028] The technical effect achieved by the above embodiment is that when the clamping block 501 moves and drives the working rod 602 to move, the fixed block 603 fixedly connected to the working rod 602 wall will be displaced. At the same time, the fixed block 603 clamps the spring 604 to form elastic potential energy, thereby generating the effect of clamping the clamping block 301, thus fixing it to the top mold core block 3.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold core structure for a plastic mold, comprising a working box (1) and a working groove (2) formed on the top surface of the working box (1), characterized in that: The top of the working groove (2) is provided with a core block (3), and the bottom surface of the inner wall of the working groove (2) is fixedly connected with an ejector block (4) that can eject the mold inside the core block (3). The bottom surface of the inner wall of the working groove (2) is slidably connected to both sides of the ejector block (4) with clamping structures (5), which can clamp the core block (3) to achieve the effect of clamping and ejecting during shaping. The inside of the working box (1) is provided with control structures (6) on both sides, which can provide the clamping structure (5) with the effect of releasing the clamping.

2. The mold core structure for a plastic mold according to claim 1, characterized in that: The bottom surface of the core block (3) is fixedly connected to a clamping block (301), and a first groove (302) is provided on one side of the surface of the clamping block (301).

3. The mold core structure for a plastic mold according to claim 2, characterized in that: The interior of the clamping block (301) is slidably connected to the surface of the ejector block (4), and the top of the ejector block (4) extends to the bottom surface of the inner wall of the core block (3).

4. The mold core structure for a plastic mold according to claim 1, characterized in that: The clamping structure (5) includes clamping blocks (501) and second sliding grooves (502). The two clamping blocks (501) are located on both sides of the bottom surface of the inner wall of the working groove (2), and the two second sliding grooves (502) are opened on the top surface of the two clamping blocks (501).

5. The mold core structure for a plastic mold according to claim 4, characterized in that: The clamping structure (5) further includes clamping grooves (503), extension blocks (504), and pulleys (505). The two clamping grooves (503) are opened on opposite sides of the two clamping blocks (501), the two extension blocks (504) are fixedly connected to the bottom surface of the two clamping blocks (501), and the multiple pulleys (505) are rotatably connected to both sides of the surface of the two clamping blocks (501).

6. The mold core structure for a plastic mold according to claim 1, characterized in that: The control structure (6) also includes a working cavity (601) and a working rod (602). The two working cavities (601) are opened on both sides inside the working box (1). The two working rods (602) are slidably connected to both sides inside the working box (1). The opposite ends of the two working rods (602) extend into the interior of the working groove (2) and are fixedly connected to the opposite side of the two clamping blocks (501).

7. The mold core structure for a plastic mold according to claim 6, characterized in that: The control structure (6) also includes a fixing block (603) and a spring (604). The two fixing blocks (603) are fixedly connected to one side of the wall of the two working rods (602) and are located inside the two working cavities (601) respectively. The two springs (604) are fixedly connected to one side of the inner wall of the two fixing blocks (603) and the two working cavities (601).

8. The mold core structure for a plastic mold according to claim 2, characterized in that: The surfaces of the two first slide grooves (302) are slidably connected to the surfaces of the two second slide grooves (502), and both sides of the surface of the clamping block (301) are respectively paired with the two clamping grooves (503).

Images