Injection mold with mold core convenient to replace

Abstract

The invention provides an injection mold with a mold core convenient to replace, and relates to the technical field of injection molds of plastic products, the injection mold comprises a mold main body, a mold core mounting cavity is formed in the front of the mold main body, a mold core main body is movably connected in the mold core mounting cavity, and the left surface and the right surface of the mold main body are each fixedly connected with a lateral positioning lock plate; according to the injection mold, the mold cores in the mold are stably connected through the novel butt joint structure, the mold cores can be rapidly locked and unlocked through the connection structure, the mold cores can be conveniently and rapidly disassembled from and installed in the mold, the replacement efficiency of the mold cores in the mold is effectively improved, and the injection mold can be applied to injection production equipment where the mold cores need to be frequently replaced; and for manufacturers of products of various brands and the same type, when products of different brands and the same type are produced, the mold cores with different brands can be quickly replaced, so that the replacement efficiency of the mold cores is effectively improved, and the production efficiency of the products is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds for plastic products, in particular to an injection mold with a mold core that is easy to replace. Background Art

[0002] Injection molds are core tools for the production of plastic products, among which the mold core is a key component of the mold. The mold core is a precision component in the injection mold used to form the inner cavity and outer shape of the product. It directly determines the shape and quality of the injection molded product. In mold manufacturing, the design and processing accuracy of the mold core are crucial, which affects the overall performance of the mold and the production efficiency of the product. Therefore, the mold core and the injection mold are closely connected, jointly ensuring the efficient and precise production of plastic products.

[0003] For different products with the same specifications but slight differences, or plastic products of the same type with different trademarks manufactured for different manufacturers, the same set of molds can be used to install different types of mold cores to perform injection molding production for products with different trademarks or products with slight differences. However, traditional mold cores are installed inside the mold. When replacing the mold core, the mold needs to be removed from the injection molding equipment, and the bolts and other connectors in the mold need to be removed using tools. The mold core can only be removed after the mold is disassembled, which is not conducive to the quick replacement of the mold core. For molds that need to frequently replace the mold core, it will have a significant impact on their production efficiency. Summary of the Invention

[0004] The disclosed embodiments relate to an injection mold with easy replacement of mold cores, so as to solve the problem that for different products with the same specifications but slight differences, or plastic products of the same type but with different trademarks manufactured for different brands, the same set of molds can be used to install different types of mold cores for injection molding of products with different trademarks or products with slight differences. However, traditional mold cores are installed inside the mold. When replacing the mold core, the mold needs to be disassembled from the injection molding equipment, and the bolts and other connecting parts in the mold need to be removed by tools. The mold core can only be removed after the mold is disassembled, which is not conducive to the quick replacement of the mold core. For molds that need to frequently replace the mold core, it will have a significant impact on their production efficiency.

[0005] According to a first aspect of the present disclosure, there is provided an injection mold for facilitating replacement of a mold core, specifically comprising: a mold main body, a mold core mounting cavity being provided in the front of the mold main body, a mold core main body being movably connected inside the mold core mounting cavity, a lateral positioning lock plate being fixedly connected to the left and right surfaces of the mold main body respectively, a locking control frame being movably inserted at the rear of the mold main body, a mold rear cover plate being fixedly connected to the rear of the mold main body by bolts, and a connecting plate rear insertion cavity being provided above the rear surface of the mold main body.

[0006] Preferably, a rectangular mold locking side cavity is respectively provided on the rear edge of the left surface and the rear edge of the right surface of the mold body, and a lock plate socket is provided on the upper edge and the lower edge of the opening of the mold locking side cavity, and a lock plate reset magnetic block made of permanent magnet material is fixedly connected inside the lock plate socket.

[0007] Preferably, two circular hole structured plug-in guide holes are vertically opened on the inner surface of the mold locking side cavity, and the inner ends of the plug-in guide holes are connected to the mold core installation cavity. Two control frame assembly grooves are opened on the rear surface of the mold body, and the two control frame assembly grooves are respectively connected to the two mold locking side cavities.

[0008] Preferably, two mold core insertion holes with circular hole structures are vertically opened on the left surface and the right surface of the mold core body respectively, the outer ends of the mold core insertion holes are connected to the inner ends of the plug-in column guide holes, and the mold core insertion holes are coaxial with the plug-in column guide holes.

[0009] Preferably, the lateral positioning lock plate is movably inserted into the mold locking side cavity, and the side of the lateral positioning lock plate facing the center of the mold body is fixedly connected with two lock plate top blocks, which are wedge-shaped protrusions with the inclined surface facing inward and downward.

[0010] Preferably, two locking pins are vertically provided on one side of the lateral positioning lock plate facing the center of the mold body, and the two locking pins are movably inserted into the two pin guide holes respectively.

[0011] Preferably, the upper and lower ends of the lateral positioning lock plate are respectively fixedly connected with a reset end plate, the reset end plate is movably inserted into the lock plate socket, the reset end plate is an iron plate body, and the reset end plate forms a magnetic connection with the lock plate reset magnetic block.

[0012] Preferably, a control frame handle is welded in the middle of the upper surface of the locking control frame, and a lifting connecting plate is vertically welded below the two ends of the locking control frame. The lower end of the outer surface of the lifting connecting plate is fixedly connected to an output connecting plate push block, which is a wedge-shaped protrusion with the inclined surface of the connecting plate push block facing outward and upward.

[0013] Preferably, a reset spring is fixedly connected to the center of the lower surface of the locking control frame, and a spring limiting plug-in plate is fixedly connected to the lower end of the reset spring. The spring limiting plug-in plate is tightly inserted into the rear insertion cavity of the connecting plate, and the reset spring is located inside the spring through groove.

[0014] Preferably, a tension spring groove is provided on the rear surface of the mold body, the lower end of the tension spring groove is connected to the rear insertion cavity of the connecting plate, and the upper end of the tension spring groove is connected to the upper surface of the mold body. The tension spring limiting plug plate is tightly inserted into the rear insertion cavity of the connecting plate, and the reset tension spring is located inside the tension spring groove.

[0015] The present invention provides an injection mold that is easy to replace the mold core, which has the following beneficial effects: In the injection mold of the present invention, the mold core in the mold is firmly connected through a new docking structure. This connection structure can quickly lock and unlock the mold core, which is convenient for rapid removal and installation of the mold core from the mold, effectively improving the replacement efficiency of the mold core in the mold, and can be used in injection molding production equipment that requires frequent replacement of mold cores. For manufacturers who produce multiple brands and the same type of products, when producing different brands and the same type of products, mold cores with different trademarks can be quickly replaced, thereby effectively improving the replacement efficiency of the mold core, which is beneficial to improving the production efficiency of the product.

[0016] In addition, when replacing the mold core, there is no need to disassemble the injection mold body. While reducing the workload and shortening the mold core replacement time, it also reduces the frequency of disassembly of the injection mold, reduces the wear on the injection mold caused by the mold core replacement process, and reduces the wear efficiency of the injection molding mold; at the same time, when replacing the mold core, there is no need to remove the injection mold from the injection molding equipment, which reduces the wear between the injection mold and the injection molding equipment.

[0017] In addition, the built-in components of the injection mold in this application are tightly connected, quick to assemble, and easy to manufacture. The locking control frame and the tension spring limit plate are limited by the rear cover of the mold to prevent the internal components of the injection mold from falling off, further improving the efficiency of the injection mold repair and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0019] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached figure: Figure 1 A schematic diagram showing the overall structure of the present application; Figure 2 Shows a schematic diagram of the structure of the rear of this application; Figure 3 It shows a schematic diagram of the structure of the present application in a disassembled state; Figure 4 It shows a schematic diagram of the rear structure of the present application in a disassembled state; Figure 5 It shows the structural diagram of the rear of the mold body of the present application; Figure 6 It shows a schematic diagram of the structure of the present application in the state of locking the control frame; Figure 7 A schematic diagram of the structure of the front of the mold body of the present application is shown; Figure 8 It shows a schematic diagram of the structure of the application in the unlocked state; Figure 9 It shows a schematic diagram of the structure of the present application in a locked control frame detached state; Figure 10 A schematic diagram of the structure of the lateral positioning lock plate and the locking control frame of the present application is shown.

[0021] Reference Signs List 1. Mold body; 101. Mold locking side cavity; 102. Lock plate socket; 103. Lock plate reset magnet; 104. Plug column guide hole; 105. Control frame assembly slot; 2. Mold core installation cavity; 3. Mold core body; 301. Mold core socket; 4. Lateral positioning lock plate; 401. Lock plate top block; 402. Locking plug column; 403. Reset end plate; 5. Lock control frame; 501. Control frame pull handle; 502. Lifting connecting plate; 503. Connecting plate push block; 504. Reset tension spring; 505. Tension spring limit plug plate; 6. Mold rear cover plate; 7. Connecting plate rear insertion cavity; 701. Tension spring through slot. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1 to 10 : The present invention proposes an injection mold for facilitating mold core replacement, comprising: a mold body 1, a mold core installation cavity 2 is provided in the front of the mold body 1, a mold core body 3 is movably connected to the mold core installation cavity 2, a lateral positioning lock plate 4 is fixedly connected to the left and right surfaces of the mold body 1, a locking control frame 5 is movably inserted at the rear of the mold body 1, a mold rear cover plate 6 is fixedly connected to the rear of the mold body 1 by bolts, a connecting plate rear insertion cavity 7 is provided above the rear surface of the mold body 1, and the rear edge of the left surface and the right surface of the mold body 1 are fixedly connected to the mold core. A rectangular mold locking side cavity 101 is provided at the rear edge of each face. A lock plate socket 102 is provided at the upper and lower edges of the opening of the mold locking side cavity 101. A lock plate reset magnetic block 103 made of a permanent magnet material is fixedly connected to the lock plate socket 102. The lateral positioning lock plate 4 is installed through the mold locking side cavity 101. The lock plate reset magnetic block 103 cooperates with the reset end plate 403 to generate a magnetic pulling force on the reset end plate 403, so that the lateral positioning lock plate 4 automatically shrinks into the mold locking side cavity 101. The inner surface of the mold locking side cavity 101 is provided with two round hole structured plug-in guide holes 104, and the inner ends of the plug-in guide holes 104 are connected to the mold core installation cavity 2. The rear surface of the mold body 1 is provided with two control frame assembly grooves 105, and the two control frame assembly grooves 105 are respectively connected to the two mold locking side cavities 101. The lifting connecting plate 502 is guided by the control frame assembly grooves 105 to keep the lifting connecting plate 502 vertically lifted when subjected to tension. When the injection mold is disassembled, the mold can be lifted by tools. After the threaded connector at the rear of the mold rear cover plate 6 is removed and the mold rear cover plate 6 is detached from the rear of the mold main body 1, the locking control frame 5 can be pulled out straight backward, and the tension spring limit plug plate 505 can be pulled out from the inside of the connecting plate rear insertion cavity 7, so that the pulling connecting plate 502 is disengaged from the inside of the two control frame assembly grooves 105, and the lateral positioning lock plates 4 on both sides are pulled outward respectively to disengage the lateral positioning lock plates 4 from the mold locking side cavity 101, and the locking control frame 5 and the lateral positioning lock plates 4 can be removed from the mold main body 1 respectively, which is convenient for maintenance and repair of the mold.

[0024] In the embodiment of the present disclosure, two mold core plug holes 301 with circular hole structures are respectively vertically opened on the left and right surfaces of the mold core body 3. The outer end of the mold core plug hole 301 is connected to the inner end of the plug column guide hole 104. The mold core plug hole 301 is coaxial with the plug column guide hole 104. The lateral positioning lock plate 4 is movably inserted into the mold locking side cavity 101. The side of the lateral positioning lock plate 4 facing the center of the mold body 1 is fixedly connected with two lock plate top blocks 401. The lock plate top block 401 is a wedge-shaped protrusion, and the inclined surface of the lock plate top block 401 faces inward and downward. The side of the lateral positioning lock plate 4 facing the center of the mold body 1 is vertically provided with two locking plugs 402. The two locking plugs 402 are respectively movably inserted in the two plug column guide holes 104. The upper and lower ends of the lateral positioning lock plate 4 are respectively fixedly connected with a reset end plate 403. The end plate 403 is movably inserted into the lock plate socket 102. The reset end plate 403 is an iron plate. The reset end plate 403 and the lock plate reset magnet 103 form a magnetic connection, and the mold core body 3 is installed inside the mold core installation cavity 2. The mold core body 3 can be fixed in the up, down, left and right directions. Under normal circumstances, the lateral positioning lock plate 4 is tightly contracted inside the mold locking side cavity 101 under the action of the magnetic attraction of the reset end plate 403 and the lock plate reset magnet 103, and the inner end of the locking pin 402 enters the mold core installation cavity 2 and is inserted into the mold core socket 301. The mold core body 3 is fixed in the front and rear directions through the locking pin 402, which has the function of limiting and locking the mold core body 3, and stably fixes the mold core body 3 to prevent the mold core body 3 from shaking, swaying or offsetting in the injection mold.

[0025] In the embodiment of the present disclosure, a control frame pull handle 501 is welded in the middle of the upper surface of the locking control frame 5, and a lifting connecting plate 502 is vertically welded below the two ends of the locking control frame 5, and the lower end of the outer surface of the lifting connecting plate 502 is fixedly connected to the connecting plate push block 503, which is a wedge-shaped protrusion, and the inclined surface of the connecting plate push block 503 faces outward and upward; a reset spring 504 is fixedly connected to the center of the lower surface of the locking control frame 5, and the lower end of the reset spring 504 is fixedly connected to the tension spring limiting plug plate 505, which is tightly inserted into the connecting plate rear insertion cavity 7, and the reset spring 504 is located inside the tension spring through groove 701; when replacing the mold core body 3, the control frame pull handle 501 is manually Or, by pulling vertically upward with a tool, the locking control frame 5 moves upward as a whole, and the connecting plate 502 is pulled upward inside the control frame assembly groove 105, and the inclined surface of the connecting plate pushing block 503 contacts the inclined surface of the locking plate top block 401. The connecting plate pushing block 503 moves upward under the action of the pulling force, and applies an external thrust to the locking plate top block 401, so that the thrust exerted on the lateral positioning lock plate 4 is greater than the magnetic attraction of the lock plate reset magnet 103 on the reset end plate 403, so that the lateral positioning lock plate 4 moves away from the mold body 1, and the locking pin 402 is pulled outward, so that the inner end of the locking pin 402 is gradually pulled out from the mold core socket 301, thereby releasing the positioning of the mold core body 3, and the mold core body 3 can be pulled out vertically forward.

[0026] When the locking cam 504 is in the closed position, the locking cam 504 is in the closed position, and the locking cam 504 is in the closed position, so that the locking cam 504 is in the closed position.

[0027] The working principle of this embodiment is as follows: when replacing the mold body 3, the control frame handle 501 is manually or vertically pulled upward by a tool to lock the control frame 5 and move it upward as a whole, and the connecting plate 502 is pulled upward inside the control frame assembly groove 105. The inclined surface of the connecting plate pushing block 503 contacts the inclined surface of the locking plate top block 401, and the connecting plate pushing block 503 moves upward under the action of the pulling force, exerting an external thrust on the locking plate top block 401, so that the thrust exerted on the lateral positioning lock plate 4 is greater than the magnetic attraction of the lock plate reset magnet 103 on the reset end plate 403, so that the lateral positioning lock plate 4 moves in the direction away from the mold body 1, and the locking pin 402 is pulled outward, so that the inner end of the locking pin 402 is gradually pulled out from the mold core insertion hole 301, thereby releasing the positioning of the mold core body 3, and the mold core body 3 can be vertically pulled forward. After the mold body 3 is disassembled and a new mold body 3 is installed, the locking control frame 5 is kept pulled upward. After the new mold body 3 is installed inside the mold installation cavity 2, the locking control frame 5 is released. The locking control frame 5 is reset downward under the action of the reset tension spring 504, so that the lifting connecting plate 502 and the connecting plate pushing block 503 are pushed downward, and the connecting plate pushing block 503 is away from the locking plate top block 401, so that the locking plate top block 401 loses its push. The lateral positioning locking plate 4 is moved closer to the center direction of the mold body 1 under the action of the magnetic attraction of the reset end plate 403 and the lock plate reset magnetic block 103, and is inserted into the mold locking side cavity 101. The locking pin 402 is also pushed inward, and the inner end of the locking pin 402 is inserted into the mold core insertion hole 301, and the front and rear directions of the mold core insertion hole 301 are locked, and the replacement of the mold core body 3 is completed. When maintaining the injection mold as a whole, the injection mold is disassembled from the injection molding machine, and then the threaded connector behind the mold rear cover plate 6 is disassembled by a tool. After the mold rear cover plate 6 is disassembled from the rear of the mold body 1, the locking control frame 5 can be pulled out straightly backward, and the tension spring limit plug plate 505 can be pulled out from the inside of the connecting plate rear insertion cavity 7, so that the pulling connecting plate 502 is disengaged from the inside of the two control frame assembly grooves 105, and the side positioning lock plates 4 on both sides are pulled outward respectively to separate the side positioning lock plates 4 from the mold locking side cavity 101, and the locking control frame 5 and the side positioning lock plates 4 can be respectively The locking plate 4, the mold body 1 and the mold rear cover plate 6 are cleaned, lubricated, maintained and derusted. After completing the maintenance work, the two side positioning locking plates 4 are reinstalled inside the two mold locking side cavities 101, and the pulling connecting plate 502 is inserted into the control frame assembly groove 105. The tension spring limit plug-in plate 505 is inserted into the connecting plate rear insertion cavity 7, and the mold rear cover plate 6 is fixedly connected to the rear surface of the mold body 1 with screws, bolts and other fasteners. The lifting connecting plate 502 and the tension spring limit plug-in plate 505 are limited by the mold rear cover plate 6 to complete the assembly of the injection mold.

[0028] In this article, there are several points to note: 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0029] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0030] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. An injection mold that is easy to replace the mold core, comprising: A mold body (1), wherein a mold core installation cavity (2) is provided in front of the mold body (1), and a mold core body (3) is movably connected inside the mold core installation cavity (2), and is characterized in that a lateral positioning lock plate (4) is fixedly connected to the left surface and the right surface of the mold body (1), respectively, a locking control frame (5) is movably inserted at the rear of the mold body (1), a mold rear cover plate (6) is fixedly connected to the rear of the mold body (1) by bolts, and a connecting plate rear insertion cavity (7) is provided above the rear surface of the mold body (1).

2. The injection mold for easy replacement of mold core according to claim 1, characterized in that: A rectangular mold locking side cavity (101) is respectively provided on the rear edge of the left surface and the rear edge of the right surface of the mold body (1), and a locking plate socket (102) is provided on the upper edge and the lower edge of the opening of the mold locking side cavity (101), and a locking plate resetting magnetic block (103) made of a permanent magnet material is fixedly connected inside the locking plate socket (102).

3. The injection mold for easy replacement of mold core according to claim 2, characterized in that: Two circular hole-structured column guide holes (104) are vertically opened on the inner surface of the mold locking side cavity (101), and the inner ends of the column guide holes (104) are connected to the mold core installation cavity (2). Two control frame assembly grooves (105) are opened on the rear surface of the mold body (1), and the two control frame assembly grooves (105) are respectively connected to the two mold locking side cavities (101).

4. The injection mold for easy replacement of mold core according to claim 3, characterized in that: Two mold core inserting holes (301) with circular hole structures are vertically opened on the left and right surfaces of the mold core body (3), respectively. The outer ends of the mold core inserting holes (301) are butted against the inner ends of the plug-in column guide holes (104), and the mold core inserting holes (301) are coaxial with the plug-in column guide holes (104).

5. The injection mold for easy replacement of mold core according to claim 3, characterized in that: The lateral positioning lock plate (4) is movably inserted into the mold locking side cavity (101), and two lock plate top blocks (401) are fixedly connected to the side of the lateral positioning lock plate (4) facing the center of the mold body (1). The lock plate top blocks (401) are wedge-shaped protrusions, and the inclined surfaces of the lock plate top blocks (401) face inward and downward.

6. The injection mold for easy mold core replacement according to claim 5, characterized in that: Two locking pins (402) are vertically provided on one side of the lateral positioning lock plate (4) facing the center of the mold body (1), and the two locking pins (402) are movably inserted into the two pin guide holes (104) respectively.

7. The injection mold for easy replacement of mold core according to claim 6, characterized in that: The upper and lower ends of the lateral positioning lock plate (4) are respectively fixedly connected to a reset end plate (403), the reset end plate (403) is movably plugged into the lock plate socket (102), the reset end plate (403) is an iron plate body, and the reset end plate (403) forms a magnetic connection with the lock plate reset magnetic block (103).

8. The injection mold for easy replacement of mold core according to claim 1, characterized in that: A control frame handle (501) is welded in the middle of the upper surface of the locking control frame (5), and a lifting connecting plate (502) is vertically welded below each of the two ends of the locking control frame (5). The lower end of the outer surface of the lifting connecting plate (502) is fixedly connected to an outgoing connecting plate push block (503), and the connecting plate push block (503) is a wedge-shaped protrusion, and the inclined surface of the connecting plate push block (503) faces outward and upward.

9. The injection mold for easy mold core replacement according to claim 1, characterized in that: A reset spring (504) is fixedly connected to the center of the lower surface of the locking control frame (5), and a spring limiting plug plate (505) is fixedly connected to the lower end of the reset spring (504). The spring limiting plug plate (505) is tightly inserted into the rear insertion cavity (7) of the connecting plate, and the reset spring (504) is located inside the spring through groove (701).

10. The injection mold for easy replacement of mold core according to claim 9, characterized in that: A tension spring slot (701) is provided on the rear surface of the mold body (1), the lower end of the tension spring slot (701) is connected to the connecting plate rear insertion cavity (7), and the upper end of the tension spring slot (701) is connected to the upper surface of the mold body (1), the tension spring limiting plug plate (505) is tightly inserted into the connecting plate rear insertion cavity (7), and the reset tension spring (504) is located inside the tension spring slot (701).

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