Injection mold with insert

Abstract

The utility model discloses an injection mold with an insert, which comprises a fixed mold side plate and a fixed mold insert, the first surface of the fixed mold side plate is provided with a mounting groove, the fixed mold insert is embedded into the mounting groove, the fixed mold insert is provided with a fixing hole, and the fixed mold insert is fixedly connected with the fixed mold side plate through a locking piece penetrating into the fixing hole; the projection of the datum plate on the fixed mold side plate is not smaller than the projection of the fixed mold insert, and the datum plate covers the fixed mold insert and is connected with the fixed mold insert into an integral structure through the connecting piece; the datum plate is embedded into and fills the mounting groove, and the second surface and the first surface of the datum plate are combined into a continuous plane structure. According to the utility model, the datum plate is arranged to shield one side, facing the injection molding part, of the fixed mold insert, redundant plastic generated in the production process of the injection molding part is avoided through the plane structure of the datum plate, and meanwhile, the datum plate is disassembled and assembled through the connecting piece, so that the datum plate can be taken down, and the fixed mold insert can be disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, and particularly relates to an injection mold with inserts. Background Art

[0002] In an injection mold, an insert is a mold accessory specifically used for being embedded in a mold core, and is also called an insert or a sub - insert. The insert facilitates the modification of the mold. For parts on the mold that often need to be modified, inserts can be made. When modifying the mold, only the insert needs to be replaced. Even multiple inserts can be pre - made for replacement, which greatly facilitates the mold modification work. In addition, the insert also helps with mold exhaust, processing, and extending the service life. However, the current disassembly and assembly of inserts on the mold are mostly done by installing socket head cap screws. When the insert needs to be replaced, the screws are removed, a disassembly tool is installed at the screw hole, and the insert is pulled out. This can meet the disassembly and assembly of the insert. However, after the mold completes injection molding, there will be a piece of waste plastic in the pit of the socket head cap screw of the insert block, resulting in risks such as shrinkage and ablation of the injection - molded plastic part, and secondary processing of the waste plastic will also increase the process and the production cost of the injection - molded part.

[0003] Therefore, how to reduce the complexity of the injection - molded part production process and improve the product quality of the injection - molded part is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0004] The utility model provides an injection mold with inserts to reduce the complexity of the injection - molded part production process and improve the product quality of the injection - molded part.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An injection mold with inserts, comprising:

[0007] A fixed - mold side plate and a fixed - mold insert block. The fixed - mold side plate is provided with an installation groove on its first surface. The fixed - mold insert block is embedded in the installation groove. The fixed - mold insert block is provided with a fixing hole, and the fixed - mold insert block is fixedly connected to the fixed - mold side plate through a locking member penetrating through the fixing hole.

[0008] A reference plate and a connecting member. The projection of the reference plate on the fixed - mold side plate is not less than the projection of the fixed - mold insert block, and the reference plate covers the fixed - mold insert block and is connected to the fixed - mold insert block as an integral structure through the connecting member. The reference plate is embedded in and fills the installation groove and is combined with the first surface into a continuous planar structure through the second surface of the reference plate.

[0009] Optionally, in the above-mentioned injection mold with inserts, a connection hole with a stepped configuration is provided on the second surface. The connecting member is a plug structure, and the first end of the connecting member passes through the connection hole and is inserted into the fixed mold insert. A locking portion for clamping the first end of the connecting member is provided in the fixed mold insert; the second end of the connecting member completely fills the connection hole.

[0010] Optionally, in the above-mentioned injection mold with inserts, the locking portion includes at least two snap balls uniformly arranged along the circumferential direction of the connection hole, and each snap ball is arranged in the fixed mold insert through an elastic member. The first end of the connecting member is in interference fit with at least two of the snap balls.

[0011] Optionally, in the above-mentioned injection mold with inserts, the snap balls are made of magnet materials of the same polarity.

[0012] Optionally, in the above-mentioned injection mold with inserts, the locking portion includes an outer snap shell, a groove is provided in the outer snap shell, the snap balls are partially embedded in the groove, and the elastic member is in a compressed state to press the snap balls into the groove.

[0013] Optionally, in the above-mentioned injection mold with inserts, the second end of the connecting member is a circular structure or a square structure.

[0014] Optionally, in the above-mentioned injection mold with inserts, the projection of the reference plate on the fixed mold side plate is equal to the projection of the fixed mold insert, and the reference plate is a rectangular plate structure.

[0015] Optionally, in the above-mentioned injection mold with inserts, a positioning post extends out on one side of the reference plate facing the fixed mold insert, and a positioning groove for snap-fitting with the positioning post is correspondingly provided on the fixed mold insert.

[0016] Optionally, in the above-mentioned injection mold with inserts, four snap balls are provided.

[0017] Optionally, in the above-mentioned injection mold with inserts, at least two of the connection holes are provided on the second surface of the reference plate, and each connection hole corresponds to one connecting member and one locking portion.

[0018] As can be seen from the above technical solutions, in the injection mold with inserts provided by the present utility model, an installation groove is provided on the fixed mold side plate for the fixed mold insert to be embedded, and the fixed mold insert is fixed on the fixed mold side plate by the commonly used method of passing through the locking member. In particular, the depth of the groove body of the installation groove is greater than the thickness of the fixed mold insert, so that the fixed mold insert cannot fill the installation groove. On this basis, a reference plate is provided to fit and cover the surface of the fixed mold insert where the fixing hole is opened, so as to cover and block the fixing hole and the locking member. At the same time, the reference plate cooperates with the fixed mold insert to completely fill the installation groove, and the second surface of the reference plate cooperates with the first surface of the fixed mold side plate to form a complete plane. Therefore, when producing injection molded parts, the first surface can avoid the problem of excess plastic on the injection molded parts with a complete plane structure, improve the production quality of the injection molded parts and reduce the production difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some examples or embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings, and the present utility model can also be applied to other similar scenarios according to the provided drawings. Unless it is obvious from the language environment or otherwise stated, the same reference numerals in the drawings represent the same structure or operation.

[0020] Figure 1 is an exploded view of the injection mold with inserts provided by the present utility model;

[0021] Figure 2 is Figure 1 an assembly schematic diagram of;

[0022] Figure 3 is a schematic diagram of the structure before the connecting member is inserted into the connecting hole;

[0023] Figure 4 is a schematic diagram of the structure after the connecting member is inserted into the connecting hole.

[0024] Among them, 10 - fixed mold side plate; 110 - first surface; 120 - installation groove; 20 - fixed mold insert; 210 - fixing hole; 220 - clamping ball; 230 - elastic member; 240 - outer clamping shell; 30 - locking member; 40 - reference plate; 410 - second surface; 420 - connecting hole; 50 - connecting member; 510 - first end; 520 - second end. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The core of the present utility model lies in disclosing an injection mold with inserts to reduce the complexity of the injection molded part production process and improve the product quality of the injection molded parts.

[0026] To enable those skilled in the art to better understand the solution of the present utility model, the embodiments of the present utility model will be described below with reference to the accompanying drawings. In addition, the embodiments shown below do not impose any limitation on the content of the utility model recited in the claims. Additionally, all the content of the configurations shown in the following embodiments is not limited to being necessary for the solution of the utility model recited in the claims.

[0027] See Figure 1 and Figure 2 , the injection mold with inserts provided by the embodiments of the present utility model mainly includes a fixed mold side plate 10, a fixed mold insert 20, a reference plate 40, and a connecting member 50. Among them, the fixed mold side plate 10 is the area on the mold where inserts need to be provided, and it is mostly set as an independent structure to facilitate the disassembly and assembly process of the inserts. The fixed mold insert 20 is assembled on the fixed mold side plate 10. It should be noted that, similar to the prior art, the fixed mold side plate 10 is provided with a mounting groove 120 on its first surface 110 for the fixed mold insert 20 to be embedded. The first surface 110 is specifically the surface of the fixed mold side plate 10 facing the inside of the mold, that is, the surface facing the injection molded part during the production process. The fixed mold insert 20 is embedded in the mounting groove 120. At the same time, to meet the requirements of convenient disassembly and assembly of the fixed mold insert 20 and subsequent replacement during the production process, the fixed mold insert 20 is also provided with fixing holes 210. The fixed mold insert 20 is fixedly connected to the fixed mold side plate 10 through a locking member 30 inserted into the fixing holes 210. It should be noted that the locking member 30 can be an internal hexagonal screw commonly used in the prior art. Correspondingly, threads are provided on both the fixing holes 210 and the fixed mold side plate 10 so that the locking member 30 can connect the fixed mold side plate 10 and the fixed mold insert 20 into an integral structure, and the internal hexagonal screw is easy to disassemble. After the operator removes the internal hexagonal screw, a disassembly tool can be installed at the screw hole, and the fixed mold insert 20 can be pulled out.

[0028] In the above embodiment, the assembly of the fixed mold insert 20 in the fixed mold side plate 10 is similar to the prior art. The difference is that in the prior art, the fixed mold insert 20 is embedded in the installation groove 120 and completely fills the installation groove 120, while in this embodiment, the fixed mold insert 20 only fills a partial area of the installation groove 120. On this basis, a reference plate 40 is also embedded in the installation groove 120. Specifically, the reference plate 40 is arranged on one side in contact with the fixed mold insert 20, and the projection of the reference plate 40 on the fixed mold side plate 10 is not less than the projection of the fixed mold insert 20, so that when it is arranged in contact with the fixed mold insert 20, it can cover the side of the fixed mold insert 20 where the fixing hole 210 is provided, so as to isolate the fixing hole 210 and the locking part 30, and prevent the fixing hole 210 and the locking part 30 from contacting the injection molded part inside the mold, resulting in waste plastic that needs to be cut and polished. At the same time, on the basis that the reference plate 40 is arranged in contact with the fixed mold insert 20, the reference plate 40 is connected to the fixed mold insert 20 into an integral structure through a connecting part 50. The connecting part 50 can be a buckle, a magic tape or other connection structures that are easy to disassemble and assemble. It should be noted that the reference plate 40 is embedded in the installation groove 120 and cooperates with the fixed mold insert 20 to completely fill the installation groove 120. Here, the complete filling specifically means that the integral structure of the reference plate 40 and the fixed mold insert 20 fills the installation groove 120. At the same time, a continuous plane structure is formed by combining the second surface 410 of the reference plate 40 and the first surface 110. Here, the second surface 410 of the reference plate 40 is the side facing the area where the injection molded part is produced inside the mold. The installation groove 120 is provided on the first surface 110 of the fixed mold side plate 10, and the second surface 410 of the filled reference plate 40 fills the hole formed by opening the installation groove 120 on the first surface 110, so that the first surface 110 forms a complete surface. During the production process of the injection molded part, the side of the fixed mold side plate 10 facing the injection molded part is a complete plane, and there will be no problem that the side of the injection molded part facing the fixed mold side plate 10 has residual plastic in the prior art. Therefore, there is no need to set a process for removing redundant plastic, which reduces the complexity of the injection molded part production process, and also avoids secondary damage to the injection molded part by reducing the process, thereby improving the product quality of the injection molded part.

[0029] Further, in order to improve the usability of the injection mold, refer to Figure 3 and Figure 4, in some embodiments of the present utility model, connection holes 420 are formed on the second surface 410 of the reference plate 40 for the insertion and connection of the connecting member 50. Since the second surface 410 is the side directly in contact with the injection molded part, in order to avoid the generation of waste plastic at the position of the connection holes 420, it is preferred that the connection holes 420 are provided with a stepped configuration, and the connecting member 50 is provided with a pin structure. The first end 510 of the connecting member 50 is used to pass through the connection holes 420 and is inserted into the fixed die insert 20 after passing through the connection holes 420. A locking portion is provided in the fixed die insert 20 to lock and fix the first end 510 after the first end 510 of the connecting member 50 is inserted into the fixed die insert 20, thereby realizing the fixed connection between the fixed die insert 20 and the reference plate 40. The second end 520 of the connecting member 50 completely fills the connection holes 420. It should be noted that the cross-sectional dimension of the second end 520 of the connecting member 50 is larger than that of the first end 510, that is, the second end 520 is the larger-sized cap area on the connecting member 50. The stepped connection holes 420 can limit the second end 520 of the connecting member 50 through its first-level stepped structure, and the first end 510 of the connecting member 50 is inserted through its second-level stepped structure. The limited second end 520 completely fills the connection holes 420 to maintain the continuous planar structure of the second surface 410 and avoid the generation of waste plastic during the production of the injection molded part.

[0030] It should be noted that in the above embodiment, since the reference plate 40 is a plate structure for plugging and covering, its thickness is much smaller than that of the fixed die insert 20. Therefore, its fixed connection structure is easier to implement. Correspondingly, the size design of the connection holes 420 for realizing the fixed connection of the reference plate 40 can be much smaller than the fixed holes 210 for realizing the fixed connection of the fixed die insert 20. Therefore, the size of the connecting member 50 is smaller than that of the locking member 30, and the risk of generating an extra plastic area when it contacts the injection molded part is smaller. At the same time, the connecting member 50 is designed as a pin structure and is matched with the stepped connection holes 420. It is easier to assemble compared with the threaded connection structure, and it will not affect the filling effect of the second end 520 of the connecting member 50 on the connection holes 420 due to the difficult control of the rotation position.

[0031] Based on the above embodiments, the locking portion provided in the fixed mold insert 20 includes at least two snap balls 220, and the snap balls 220 are evenly arranged along the circumferential direction of the connection hole 420 to lock the first end 510 of the connecting member 50 inserted into the fixed mold insert 20. Specifically, each snap ball 220 is arranged in the fixed mold insert 20 through an elastic member 230, so that when the connecting member 50 is inserted, the snap ball 220 remains stably fixed and applies a clamping force to the connecting member 50 through the elastic action of the elastic member 230. After the first end 510 of the connecting member 50 is inserted into the fixed mold insert 20, it is in interference fit with at least two snap balls 220. It should be noted that the spherical snap structure enables the connecting member 50 to have good guidance during the insertion process, avoiding rigid contact and preventing the first end 510 of the connecting member 50 from being blocked, and at least two snap balls 220 maintain an interference fit with the connecting member 50 under the action of the elastic member 230 to lock the connecting member 50. In the above structure, the connecting member 50 only needs to pass through the connection hole 420 and be inserted in place in the fixed mold insert 20 to realize the locking of the fixed mold insert 20 and the reference plate 40. The operation is convenient without other locking processes, avoiding the deviation of the connecting member 50 caused by complex locking actions, and improving the filling effect of the second end 520 of the connecting member 50 on the connection hole 420 on the second surface 410.

[0032] In order to further optimize the above technical solution and improve the disassembly convenience of the reference plate 40 and the connecting member 50, the snap balls 220 are made of magnets of the same polarity. They maintain a fixed gap through repulsive force and the surrounding limiting structure to meet the locking effect on the connecting member 50. At the same time, when the reference plate 40 needs to be removed, the operator can use a repulsive iron of the same polarity as the snap balls 220 and approach the reference plate 40 to push the snap balls 220 to move away from the reference plate 40. The reference plate 40 compresses the elastic member 230 and moves away from the reference plate 40, while releasing the first end 510 of the connecting member 50. The connecting member 50 can naturally fall off under the action of gravity, and the reference plate 40 can be smoothly removed. At this time, the operator can remove the locking member 30 and install a disassembly tool at the fixing hole 210 to pull out the fixed mold insert 20 for maintenance or replacement.

[0033] It should be noted that after the operator moves the repulsive iron away, the snap balls 220 can reset under the elastic action of the elastic member 230 and lock the connecting member 50 inserted into the fixed mold insert 20 during the subsequent installation of the reference plate 40.

[0034] To further optimize the above technical solution, in the injection mold provided in the embodiment of the present utility model, the locking portion further includes an outer clamping shell 240. The outer clamping shell 240 is fixedly arranged inside the fixed mold insert 20, and a groove is arranged on the inner wall of the outer clamping shell 240. A partial area of the clamping ball 220 is embedded in the groove to be stably located at the position of the groove under the limiting action of the elastic member 230 and the outer clamping shell 240, so as to effectively clamp the connecting member 50. It should be noted that the outer clamping shell 240 is preferably a pyramid or cone structure and is arranged with the connecting hole 420 as the vertex, so that the connecting member 50 is inserted along the midline of the outer clamping shell 240 and is evenly clamped by the surrounding clamping balls 220.

[0035] In addition, it should be noted that in some embodiments of the present utility model, four clamping balls 220 are arranged and evenly arranged along the circumference of the connecting hole 420. The four clamping balls 220 can clamp and lock the first end 510 of the connecting member 50 from four directions when the connecting member 50 is inserted into the fixed mold insert 20, thereby reducing the risk of the connecting member 50 being skewed under the action of fewer clamping balls 220.

[0036] Furthermore, to improve the assembly convenience of the reference plate 40 and the fixed mold insert 20, in some embodiments of the present utility model, the second end 520 of the connecting member 50 is a circular structure or a square structure, and a corresponding stepped structure is arranged on the connecting hole 420 for the second end 520 to be filled and arranged. It should be noted that the second end 520 with a circular structure or a square structure does not need to distinguish between the front and back directions, and only needs to insert the connecting member 50 into the connecting hole 420 to realize the automatic alignment of the second end 520, and conveniently realize the filling of the connecting hole 420.

[0037] Furthermore, in some embodiments of the present utility model, the projection of the reference plate 40 on the fixed mold side plate 10 is equal to the projection of the fixed mold insert 20, so as to minimize the use area of the reference plate 40 and reduce the production cost of the injection mold while meeting the requirement of covering one side of the fixed mold insert 20 by the reference plate 40. At the same time, the reference plate 40 is preferably a rectangular plate structure, which not only has a good shielding and covering effect, but also the rectangular plate structure is easy to produce and manufacture, and the corresponding installation groove 120 is also a regular cuboid structure, thereby reducing the overall production difficulty of the injection mold and reducing the production cost.

[0038] At the same time, it should be noted that to improve the fitting degree between the reference plate 40 and the fixed mold insert 20, it is preferred that a plurality of positioning columns protrude from the side of the reference plate 40 facing the fixed mold insert 20, and positioning grooves are arranged on the fixed mold insert 20. The positioning grooves correspond to the positioning columns one by one. When the reference plate 40 is fitted with the fixed mold insert 20, each positioning column is inserted into a positioning groove to ensure the alignment effect between the reference plate 40 and the fixed mold insert 20, and reduce the risk of the reference plate 40 deviating from the fixed mold insert 20.

[0039] In order to improve the assembly stability between the reference plate 40 and the fixed mold insert 20, in some embodiments of the present utility model, at least two connecting holes 420 are spaced apart on the second surface 410 of the reference plate 40. At the same time, each connecting hole 420 is correspondingly provided with a connecting member 50 and a locking portion. The two connecting members 50 cooperate to bear the locking force between the reference plate 40 and the fixed mold insert 20, thereby reducing the risk of the reference plate 40 falling off and improving the production safety during the injection molding process.

[0040] It should be noted that for the sake of convenience of description, only the parts related to the relevant utility model are shown in the drawings. Without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0041] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0042] The above description is only for the preferred embodiments of the present utility model and the description of the applied technical principles, and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. The scope of the utility model involved in the present utility model is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features having similar functions disclosed in the present utility model.

Claims

1. An injection mold with inserts, characterized in that, Comprising: A fixed mold side plate and a fixed mold insert. The fixed mold side plate is provided with a mounting groove on its first surface. The fixed mold insert is embedded in the mounting groove. The fixed mold insert is provided with a fixing hole, and the fixed mold insert is fixedly connected to the fixed mold side plate through a locking member penetrating through the fixing hole. A reference plate and a connecting member. The projection of the reference plate on the fixed mold side plate is not less than the projection of the fixed mold insert, and the reference plate covers the fixed mold insert and is connected to the fixed mold insert as an integral structure through the connecting member. The reference plate is embedded in and fills the mounting groove and is combined with the first surface to form a continuous planar structure through the second surface of the reference plate.

2. The injection mold with inserts according to claim 1, characterized in that, A stepped connection hole is provided on the second surface. The connecting member is a plug pin structure, and the first end of the connecting member passes through the connection hole and is inserted into the fixed mold insert. A locking portion for clamping the first end of the connecting member is provided in the fixed mold insert. The second end of the connecting member completely fills the connection hole.

3. The injection mold with inserts according to claim 2, characterized in that, The locking portion includes at least two catch balls uniformly arranged along the circumferential direction of the connection hole, and each catch ball is arranged in the fixed mold insert through an elastic member. The first end of the connecting member is in interference fit with at least two of the catch balls.

4. The injection mold with inserts according to claim 3, characterized in that, The catch ball is made of magnet material with the same polarity.

5. The injection mold with inserts according to claim 3, characterized in that, The locking portion includes an outer shell. A groove is provided in the outer shell. The catch ball is partially embedded in the groove, and the elastic member is in a compressed state to press the catch ball into the groove.

6. The injection mold with inserts as claimed in claim 1, wherein, The second end of the connecting member is a circular structure or a square structure.

7. The injection mold with inserts according to claim 1, characterized in that, The projection of the reference plate on the fixed mold side plate is equal to the projection of the fixed mold insert, and the reference plate is a rectangular plate structure.

8. The injection mold with inserts as claimed in claim 7, wherein, A positioning post extends outwards on one side of the reference plate facing the fixed mold insert, and a positioning groove for snap-fitting with the positioning post is correspondingly provided on the fixed mold insert.

9. The injection mold with inserts according to claim 3, characterized in that, Four catch balls are provided.

10. The injection mold with inserts according to claim 2, characterized in that, At least two of the connection holes are provided on the second surface of the reference plate, and each connection hole corresponds to one connecting member and one locking portion.

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