Injection mold

Abstract

The utility model discloses an injection mold which comprises a fixed mold assembly, a movable mold assembly and a guide pillar, the movable mold assembly is detachably arranged on the fixed mold assembly, the fixed mold assembly comprises a fixed mold plate and a movable plate, the fixed mold plate is detachably arranged on the movable plate, and the movable plate is detachably arranged on the movable plate. The fixed mold plate is arranged on the guide column in a sliding mode, a fixed mold core is arranged on the fixed mold plate, and a plurality of tooth heads are arranged on the fixed mold core. Wherein one end of the guide column is fixed on the movable plate, the other end of the guide column is detachably provided with a limiting piece, and the movable mold assembly is provided with a guide hole matched with the other end of the guide column. According to the utility model, the mold can be quickly changed on injection molding equipment, so that the situation that operators are injured due to the falling of the fixed mold plate is avoided, and the damage to the injection mold is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold. Background Art

[0002] An injection mold is a tool used in industrial production to prepare molded articles by an injection method. The injection mold is provided with a mold core, and the mold core is used to provide a cavity for product shaping, that is, the mold core is responsible for the part of the product design to be shaped, and its shape and size directly determine the final shape of the product. As is well known, the production cost of a set of injection molds is not low. Usually, in order to save costs, some enterprises will produce multiple products with a set of injection molds by replacing the mold core. When replacing the mold core for producing the corresponding product, since in the existing injection mold, the tooth head is arranged on the moving mold, the operator usually needs to remove a whole set of injection molds from the injection machine and replace the mold core of the required new product on the machine table, which not only wastes production time and human resources, but also increases the risk of work-related injuries to the operator. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an injection mold to solve the problems that when replacing the mold core of the existing injection mold, it needs to be operated on the machine table, and the efficiency of replacing the mold core is not high and it is easy to cause injuries to the operator.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: an injection mold, which includes a fixed mold assembly, a moving mold assembly and a guide pillar. The moving mold assembly is detachably arranged on the fixed mold assembly. The fixed mold assembly includes a fixed template and a movable plate. The fixed template is detachably arranged on the movable plate and is slidably arranged on the guide pillar. The fixed template is provided with a fixed mold core, and the fixed mold core is provided with a plurality of tooth heads. Wherein, one end of the guide pillar is fixed on the movable plate, the other end of the guide pillar is detachably provided with a limiting member, and a guiding hole for matching with the other end of the guide pillar is formed on the moving mold assembly.

[0005] Further, in the injection mold of the utility model, a first groove is formed on the fixed template, and the fixed mold core is arranged in the first groove.

[0006] Further, in the injection mold of the utility model, the fixed mold core is provided with a plurality of second grooves, the tooth heads are arranged in the second grooves, and there is a gap between the tooth heads and the groove walls of the second grooves.

[0007] Further, in the injection mold of the utility model, there are four tooth heads, and the four tooth heads are arranged in a rectangular shape on the fixed mold core.

[0008] Further, in the injection mold of the present utility model, a feed inlet is provided on the fixed mold assembly.

[0009] Further, in the injection mold of the present utility model, the moving mold assembly includes a moving template and a moving mold core. A third groove is formed in the moving template, and the moving mold core is disposed in the third groove.

[0010] Further, in the injection mold of the present utility model, a plurality of first forming grooves are provided on the moving mold core.

[0011] Further, in the injection mold of the present utility model, a first protruding portion is provided on the moving mold core, and a first recessed portion is provided on the fixed mold core. Wherein, in the closed mold state, the first protruding portion is embedded in the first recessed portion.

[0012] Further, in the injection mold of the present utility model, there are four guide posts. The cross-section of the fixed mold assembly is rectangular, and the four guide posts are disposed at the four corner positions of the fixed mold assembly.

[0013] Further, in the injection mold of the present utility model, the fixed template and the movable plate are connected by bolts.

[0014] The beneficial effects of the present utility model are as follows: The guide posts and the tooth heads are provided on the fixed mold assembly. Guide posts with corresponding lengths are provided, and a detachable limiting member is provided at one end of the guide post away from the fixed mold assembly. When it is necessary to replace the mold core, first separate the fixed mold assembly and the moving mold assembly, and then set the limiting member at one end of the guide post away from the fixed mold assembly, so that when replacing the fixed mold core in the fixed template, the fixed template can be moved along the guide post, so that the fixed template can be quickly moved to a position where the fixed mold core can be replaced. Moreover, since the limiting member is provided on the guide post, the limiting member can limit the moving range of the fixed template. Therefore, during the process of moving the fixed template and replacing the fixed mold core, the fixed template will not fall off, avoiding the situation that the operator is injured and the injection mold equipment is damaged due to the falling of the fixed template, thereby effectively enabling quick mold change on the injection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural view of the injection mold of the present utility model from a certain perspective in one embodiment;

[0016] Figure 2 is a schematic structural view of the injection mold of the present utility model from a certain perspective in one embodiment after hiding some structures;

[0017] Figure 3 is Figure 2 a schematic structural view of the injection mold shown from another perspective in one embodiment;

[0018] Figure 4 is Figure 2 a schematic structural view of the injection mold shown from another perspective in an embodiment;

[0019] Figure 5 is a schematic structural view of the injection mold according to the present utility model from a perspective in an embodiment after hiding another part of the structure;

[0020] Figure 6 is Figure 5 a schematic structural view of the injection mold shown from another perspective in an embodiment.

[0021] Reference numeral description:

[0022] 1. Fixed mold assembly;

[0023] 2. Movable mold assembly; 21. Guide hole; 22. Movable template; 23. Movable mold core; 24. First forming groove; 25. First protrusion; 26. Second recess;

[0024] 3. Guide pillar;

[0025] 4. Movable plate;

[0026] 5. Fixed template; 51. Fixed mold core; 52. Tooth head; 53. Second forming groove; 54. First recess; 55. Second protrusion; 56. First screw hole; 57. Feed port;

[0027] 6. Limiting member. Detailed implementation mode

[0028] To describe in detail the technical content, achieved purpose and effect of the present utility model, the following is described in conjunction with the embodiments and with reference to the accompanying drawings.

[0029] As is well known, the production cost of a set of injection molds is not low. Usually, in order to save costs, different mold cores are replaced within the same set of injection molds to enable the production of multiple products with one set of injection molds. When replacing the mold core for the corresponding product to be produced, since the tooth head is arranged on the movable mold, the operator usually removes the entire set of injection molds from the injection molding machine and is forced to replace the mold core of the required new product on the machine table. After research by the inventor, it is found that if the replacement is directly carried out on the injection molding machine, when the operator replaces the movable template on the injection molding machine, due to the limited stroke of the guide pillar, after the movable template is knocked out to an effective replacement distance, without the support of the guide pillar, the movable template will fall off the injection molding machine, which is likely to cause damage to the machine table and injury to the operator. Moreover, lengthening the guide pillar will affect the cooperation between the movable mold and the fixed mold. Therefore, the operator must disassemble the entire set of injection molds and forcefully replace the mold core of the new product on the machine table, which not only wastes production time and human resources, but also increases the risk of work-related injuries to the operator.

[0030] For this purpose, please refer to Figures 1 to 6 , the present utility model designs an injection mold, which includes a fixed mold assembly 1, a movable mold assembly 2 and guide posts 3. The movable mold assembly 2 is detachably arranged on the fixed mold assembly 1. The fixed mold assembly 1 includes a movable plate 4 and a fixed template 5. The fixed template 5 is detachably arranged on the movable plate 4, and the fixed template 5 is slidably arranged on the guide posts 3. A fixed mold core 51 is arranged on the fixed template 5, and a plurality of tooth heads 52 are arranged on the fixed mold core 51. Wherein, one end of the guide post 3 is fixed on the movable plate 4, the other end of the guide post is detachably provided with a limiting member 6, and a guiding hole 21 for matching with the other end of the guide post is formed on the movable mold assembly.

[0031] The structural principle of the present utility model is briefly described as follows: For the injection mold provided by the present utility model, the guide posts 3 and the tooth heads 52 are arranged on the fixed mold assembly 1, and a detachable limiting member 6 (such as a limiting gasket) is arranged at the end of the guide post 3 far away from the fixed mold assembly 1. In actual operation, the operator first separates the fixed mold assembly 1 and the movable mold assembly 2 on the injection equipment, and fixes the limiting member 6 on the guide post 3 by using a corresponding hexagonal wrench. After all the limiting members 6 are fixed on the guide post 3, the operator screws out the mating fixing screws of the fixed template 5 and the movable plate 4 along the threads of the threaded holes by using a corresponding hexagonal wrench. After the mating fixing screws of the fixed template 5 and the movable plate 4 are screwed out, the fixed template 5 is in an active state, and the operator then uses a corresponding copper hammer to knock the active fixed template 5 to a distance where the mold core can be replaced. Due to the limitation of the limiting member 6, when the fixed template 5 is knocked by the copper hammer, the fixed template 5 will not fall off, and because the guide post 3 has enough length, the fixed template 5 can be moved to a distance where the mold core can be replaced.

[0032] When the fixed template 5 moves to a position where the mold core can be replaced, the operator screws out the mating fixing screws of the fixed template 5 and the fixed mold core 51 along the threads of the second threaded hole by using a corresponding hexagonal wrench. Since the second threaded hole on the fixed mold core 51 is M8 and the screw hole on the fixed template 5 is M6, when disassembling the fixed mold core 51, an M8 screw is screwed into the fixed mold core 51 through the mating fixing screw hole in the direction of the fixed template 5. When the M8 screw contacts the fixed template 5, the screw cannot be screwed in further, and the fixed mold core 51 will be extruded in the opposite direction, so as to push out the fixed mold core 51. After the fixed mold core 51 is pushed out, the operator can replace the new fixed mold core 51, and then disassemble the limiting member 6 on the guide post 3. After the limiting member 6 on the guide post 3 is disassembled, the injection equipment can be used normally, thus realizing rapid mold change on the injection equipment.

[0033] As can be seen from the above description, the beneficial effects of the present utility model are as follows: Compared with the prior art, in the present utility model, the guide post 3 and the tooth head 52 are arranged on the fixed mold assembly 1, the length of the guide post 3 is extended, and a detachable limiting member 6 is arranged at one end of the guide post 3 away from the fixed mold assembly 1. In the mold opening state, the limiting member 6 is arranged at one end of the guide post 3 away from the fixed mold assembly 1, so that when replacing the fixed mold core 51 in the fixed template 5, the fixed template 5 can be moved along the guide post 3 to quickly move the fixed template 5 to a position where the fixed mold core 51 can be replaced. Moreover, since the limiting member 6 is arranged on the guide post 3, the limiting member 6 can limit the movement range of the fixed template 5. Therefore, during the process of moving the fixed template 5 and replacing the fixed mold core 51, the fixed template 5 will not fall off, avoiding the situation where the operator is injured and the injection mold equipment is damaged due to the fall of the fixed template 5, so that the mold can be effectively changed quickly on the injection equipment.

[0034] It should be noted that the above injection mold is used to form a corresponding product, and the above tooth head 52 is used to form the internal thread of the product.

[0035] Further, in the injection mold of the present utility model, a first groove is formed on the fixed template 5, and the fixed mold core 51 is arranged in the first groove.

[0036] Further, in the injection mold of the present utility model, the fixed mold core 51 is provided with a second forming groove 53 with an upward opening.

[0037] As can be seen from the above description, by providing a corresponding fixed mold core 51 and arranging a corresponding second forming groove 53 on the fixed mold core 51, it is convenient to prepare a product with a corresponding shape.

[0038] Further, in the injection mold of the present utility model, the fixed mold core 51 is provided with a plurality of second grooves, the tooth head 52 is arranged in the second grooves, and there is a gap between the tooth head 52 and the groove wall of the second groove.

[0039] Further, in the injection mold of the present utility model, it includes four tooth heads 52, and the four tooth heads 52 are arranged in a rectangular shape on the fixed mold core 51.

[0040] It should be noted that the tooth head 52 is used to form the internal thread of the product. By providing four second grooves on the fixed mold core 51, corresponding the four tooth heads 52 to the four second grooves, and having a gap between the tooth head 52 and the groove wall of the second groove, a product with a corresponding internal thread can be prepared.

[0041] Further, in the injection mold of the present utility model, a feed port 57 is arranged on the fixed mold assembly.

[0042] As can be seen from the above description, through the feed inlet 57, the molten plastic raw material can be guided into the cavity of the mold, ensuring that the plastic can smoothly enter and fill the entire cavity.

[0043] Further, in the injection mold of the present utility model, the moving mold assembly 2 includes a moving template 22 and a moving mold core 23. A third groove is formed on the moving template 22, and the moving mold core 23 is arranged in the third groove.

[0044] Further, in the injection mold of the present utility model, a plurality of first forming grooves 24 are provided on the moving mold core 23.

[0045] As can be seen from the above description, by providing the corresponding first forming grooves 24 (i.e., mold cavities) on the moving mold core 23, it is convenient to prepare products of corresponding shapes, that is, for forming the outer surface of the product.

[0046] Further, in the injection mold of the present utility model, a first protrusion 25 is provided on the moving mold core 23, and a first recess 54 is provided on the fixed mold core 51. Wherein, in the closed mold state, the first protrusion 25 is embedded in the first recess 54.

[0047] As can be seen from the above description, in the closed mold state, the first protrusion 25 is arranged in the first recess 54, which is convenient for enclosing and making the mold cavity for the corresponding product.

[0048] Further, in the injection mold of the present utility model, it includes four guide posts 3. The cross-section of the fixed mold assembly 1 is rectangular, and the four guide posts 3 are arranged at the four corner positions of the fixed mold assembly 1.

[0049] As can be seen from the above description, by arranging the four guide posts 3 at the four corner positions of the fixed mold assembly 1, it is convenient for the fixed mold assembly 1 and the moving mold assembly 2 to be quickly assembled and positioned through the four guide posts 3 during the mold closing process, improving the accuracy of assembly and positioning. In addition, when replacing the mold core, the fixed template 5 can be accurately moved away from the movable plate 4 through the four guide posts.

[0050] Further, in the injection mold of the present utility model, the fixed template 5 and the movable plate 4 are connected by bolts.

[0051] In practical applications, fixing bolts can be provided on the fixed template 5, and screw holes matching the fixing bolts can be provided on the movable plate 4, so as to connect the fixed template 5 and the movable plate 4. When replacing the mold core of the injection mold, the two can be separated by removing the bolts between the fixed template 5 and the movable plate 4.

[0052] Please refer to Figures 1 to 6, Embodiment 1 of the present utility model is: an injection mold, including a fixed mold assembly 1 and a movable mold assembly 2. The fixed mold assembly 1 and the movable mold assembly 2 are detachably connected. In the closed mold state, the fixed mold assembly 1 and the movable mold assembly 2 are in a connected state. In the open mold state, the fixed mold assembly 1 and the movable mold assembly 2 are in a separated state. The following is a detailed introduction in combination with Figures 1 to 6 Specific introduction.

[0053] In this embodiment, as Figures 2 to 4 shown, the fixed mold assembly 1 includes a fixed mold plate 5, a movable plate 4, a backing plate, and a fixed mold base plate from top to bottom. Among them, the fixed mold plate 5 and the movable plate 4 are detachably connected. In this embodiment, the fixed mold plate 5 and the movable plate 4 are detachably connected by bolts. As Figure 3 shown, the above-mentioned fixed mold plate 5 is provided with a plurality of first screw holes 56 for cooperating with and fixing the movable plate 4. The plurality of first screw holes 56 are arranged in a rectangular shape around the periphery of the fixed mold core 51. On the fixed mold plate 5, a first groove is provided, and a detachable fixed mold core 51 is provided in the first groove. In this embodiment, the fixed mold core 51 can be detachably arranged on the fixed mold plate 5 through corresponding bolts. The fixed mold core 51 is provided with a plurality of second screw holes for cooperating with and fixing the female mold plate (i.e., the fixed mold plate). On the fixed mold core 51, a second forming groove 53 and four tooth heads 52 are provided. The tooth heads 52 are arranged in the second groove of the fixed mold core 51, and the four tooth heads 52 are arranged in a rectangular shape. It should be noted that four guide posts 3 are provided on the fixed mold assembly 1. As Figure 3 shown, the cross-section of the fixed mold assembly 1 is rectangular, and the four guide posts 3 are arranged at the corners. The guide posts 3 penetrate through multiple plates such as the fixed mold plate 5, the movable plate 4, and the movable mold plate 22. In the closed mold state, at least part of the column body of the guide posts 3 is located in the fixed mold assembly 1, and at least part of the column body is located in the guide holes 21 of the movable mold assembly 2. In the open mold state, the movable mold assembly 2 is separated from the fixed mold assembly 1, and the part of the column body of the guide posts 3 arranged in the guide holes 21 is exposed to the air, and one end of the guide posts 3 is fixedly penetrated through the movable plate, the backing plate, and the fixed mold base plate. At this time, a detachable limiting member 6 can be provided at the end of the guide posts 3 away from the fixed mold assembly 1. Since the movable plate 4 and the fixed mold plate 5 are detachably connected, when separating the movable plate 4 and the fixed mold plate 5, the fixed mold plate 5 can be moved along the guide posts 3 until it moves to a distance where the mold core can be replaced, and then the mold core can be replaced.

[0054] In this embodiment, as Figure 5As shown in the figure, the moving die assembly 2 includes a moving die plate 22, square iron blocks, and a moving die base from top to bottom. A thimble panel and a thimble bottom plate are arranged between the two square iron blocks, and the thimble panel is arranged on the thimble bottom plate. A third groove is provided on the moving die plate 22, and a moving die core 23 is arranged in the third groove. Four third forming grooves are provided on the moving die core 23. The four third forming grooves are arranged in a rectangular shape on the moving die core 23. In addition, the overall cross-sectional shape of the moving die core 23 and the fixed die core 51 is similar to a rectangle. Among them, first protruding portions 25 are provided on two sides of the moving die core 23 extending in the first direction, and second recessed portions 26 are provided on two sides of the moving die core 23 extending in the second direction. First recessed portions 54 are provided on two sides of the fixed die core 51 extending in the first direction, and second protruding portions 55 are provided on two sides of the fixed die core 51 extending in the second direction. In the mold closing state, the first protruding portions 25 are embedded in the first recessed portions 54, and the second protruding portions 55 are embedded in the second recessed portions 26.

[0055] In practical applications, after the fixed die assembly and the moving die assembly are separated, the operator can use a hex wrench to fix a limiting member (such as a limiting gasket) on the guide pillar, which can prevent the fixed die plate from falling to the ground and avoid damage to the injection mold and injury to the operator caused by the fixed die falling to the ground during the disassembly process. In this way, the work injury risk of the operator is reduced. After fixing the limiting gasket, it is necessary to use a hex wrench to loosen the fixing screws for the cooperation between the fixed die plate and the movable plate, and use a copper hammer to knock it to the distance where the replaceable die core can be reached. The fixed die core is also loosened from the fixing screws for the cooperation with the fixed die plate with a hex wrench. After loosening, screw in an M8 screw towards the fixed die plate. Since the hole on the fixed die plate is M6, the fixed die core will be pushed out by the reverse extrusion. After the fixed die core is pushed out, after replacing the die core to be replaced, remove the limiting member (such as a limiting gasket) on the guide pillar, and then the machine can be started for production. To sum up, this method of changing the mold directly on the injection molding equipment can shorten the production time and improve the production efficiency.

[0056] To sum up, the injection mold provided by the present utility model: (1) solves the problem that the existing die core replacement needs to be forced to operate on the machine table, thereby realizing direct replacement of the die core on the injection molding machine. (2) The tooth heads on the moving die assembly are arranged on the fixed die assembly, and the length of the guide pillar is extended, so as to ensure that when the fixed die plate moves to the position where the fixed die core can be replaced, the fixed die plate is still on the guide pillar and does not fall, achieving the effect of changing the mold on the injection molding equipment, and will not damage the injection mold or cause injury to the operator. (3) During the mold opening process of the fixed die plate and the moving die plate, positioning and guiding are carried out through the guide pillar, which is convenient for the operator to carry out mold opening positioning.

[0057] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall similarly be included within the patent protection scope of the present utility model.

Claims

1. An injection mold, characterized in that: It includes a fixed mold assembly, a movable mold assembly and a guide column, wherein the movable mold assembly is detachably arranged on the fixed mold assembly, the fixed mold assembly includes a fixed mold plate and a movable plate, the fixed mold plate is detachably arranged on the movable plate, and the fixed mold plate is slidably arranged on the guide column, the fixed mold plate is provided with a fixed mold core, and the fixed mold core is provided with a plurality of tooth heads; wherein one end of the guide column is fixed on the movable plate, the other end of the guide column is detachably provided with a limit piece, and a guide hole for matching with the other end of the guide column is opened on the movable mold assembly.

2. The injection mold according to claim 1, characterized in that: The fixed mold plate is provided with a first groove, and the fixed mold core is arranged in the first groove.

3. The injection mold according to claim 1, characterized in that: The fixed mold core is provided with a plurality of second grooves, the tooth heads are arranged in the second grooves, and there is a gap between the tooth heads and the groove walls of the second grooves.

4. The injection mold according to claim 1, characterized in that: It comprises four tooth heads, which are arranged in a rectangular shape on the fixed mold core.

5. The injection mold according to claim 1, characterized in that: The fixed mold assembly is provided with a feed port.

6. The injection mold according to claim 1, characterized in that: The movable mold assembly includes a movable mold plate and a movable mold core. The movable mold plate is provided with a third groove, and the movable mold core is arranged in the third groove.

7. The injection mold according to claim 6, characterized in that: The movable mold core is provided with a plurality of first forming grooves.

8. The injection mold according to claim 6, characterized in that: The movable mold core is provided with a first protrusion, and the fixed mold core is provided with a first recess, wherein in a mold-closing state, the first protrusion is embedded in the first recess.

9. The injection mold according to claim 1, characterized in that: It comprises four guide pillars, the cross section of the fixed mold assembly is rectangular, and the four guide pillars are arranged at the four corners of the fixed mold assembly.

10. The injection mold according to claim 1, characterized in that: The fixed plate is connected to the movable plate by bolts.

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