A device for quickly replacing a movable insert core block of an injection mold

Abstract

This invention provides a quick-change device for movable inserts in injection molds, comprising: a base frame and a mold assembly. The mold assembly has a insert positioning component on its inner wall, dynamic clamping components installed on the inner walls of both ends of the mold assembly, anti-deviation components installed on the inner walls of the dynamic clamping components, and an elastic ejection component installed at the bottom of the mold assembly. This invention provides a quick-change device for movable inserts in injection molds. Through the combined use of the insert positioning component and the dynamic clamping component, the internal mechanical structure can be pre-positioned without manual intervention. Furthermore, the mechanical force during mold closing allows the dynamic clamping component to automatically engage with the groove on the inner wall of the insert positioning component, forming a rigid lock. Secondly, the elastic ejection component at the bottom automatically ejects the finished workpiece, providing convenience and reducing the hassle of subsequent mold disassembly.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a device for quickly changing movable inserts in injection molds. Background Technology

[0002] In the field of injection molding, movable inserts are key components in molds used to form complex structures of products (such as deep cavities, irregular holes, threads, etc.), and they need to be replaced frequently depending on the product model.

[0003] Traditional molds often use bolts and pins to fix movable core blocks. When replacing them, the machine must be stopped, the fasteners must be removed with a wrench, the position must be manually adjusted, and then they must be tightened again. The whole process depends on the precision and skill of manual operation, and the operation procedure is relatively cumbersome. It cannot flexibly adapt to the structural position of the core block, and its practicality is poor. Furthermore, when demolding later, operators still need to perform cumbersome structural disassembly.

[0004] Therefore, it is necessary to provide a device for quick replacement of movable inserts in injection molds to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides a device for quickly changing movable inserts in injection molds, which solves the problem that existing molds cannot flexibly adapt to the structural position of the inserts during installation and use.

[0006] To solve the above-mentioned technical problems, this utility model provides a quick-change device for a movable insert in an injection mold, comprising: a base frame and a mold assembly. The mold assembly is installed inside the base frame. The inner wall of the mold assembly is provided with a insert positioning component for pre-positioning the insert. Dynamic clamping components are installed on the inner walls at both ends of the mold assembly for dynamically clamping the insert positioning component. Anti-deviation components are installed on the inner walls of the dynamic clamping components for structural positioning of the dynamic clamping components. An elastic ejection component is installed at the bottom of the mold assembly.

[0007] Preferably, the mold assembly includes a processing mold, with an injection port on the inner wall of the top of the processing mold and a guide structure installed at the bottom of the processing mold for structural guidance of the processing mold.

[0008] Preferably, the core block positioning assembly includes a frame structure and a core block workpiece. The core block workpiece has fixed plate structures installed at both ends. The frame structure, in conjunction with the fixed plate structures, can be used for the pre-positioning of the core block workpiece.

[0009] Preferably, the dynamic clamping assembly includes a reset block and a baffle structure. The baffle structure slides on the inner walls of both ends of the mold assembly. A clamping rod is installed on the side end of the baffle structure. A rotating frame is installed on the side end of the reset block and the baffle structure. A connecting structure is rotatably provided on the inner wall of the side end of the rotating frame. The connecting structure is used for the rotatable connection between the reset block and the baffle structure. An elastic support is installed at the bottom of the reset block. The elastic support is used for the elastic support of the reset block.

[0010] Preferably, the anti-deviation component includes a positioning structure and a fixed rod structure. The positioning structure is installed on the top inner wall of the dynamic clamping component, and the fixed rod structure is installed on the bottom inner wall of the dynamic clamping component. The positioning structure, in conjunction with the fixed rod structure, can be used for structural clamping of the dynamic clamping component.

[0011] Preferably, the elastic ejection assembly includes a receiving cavity, which is formed on the bottom inner wall of the mold assembly. An ejection structure is provided inside the receiving cavity. The ejection structure is used for the elastic ejection of the core block positioning assembly. Elastic reset members are installed at the four bottom corners of the ejection structure.

[0012] Compared with related technologies, the quick-change device for changing movable inserts in injection molds provided by this utility model has the following advantages:

[0013] This invention provides a device for quickly changing movable inserts in injection molds. When installing or replacing internal inserts in the injection mold, to improve the flexibility of the inserts, a core block positioning component and a dynamic locking component work together. This allows for convenient pre-positioning of the internal mechanical structure without manual intervention. Furthermore, the mechanical force during mold closing automatically engages the dynamic locking component with the inner wall groove of the core block positioning component, forming a rigid lock, eliminating the need for external bolts for structural fastening and improving ease of positioning and installation. Secondly, when the mold is opened, an elastic ejector component at the bottom automatically ejects the finished workpiece, providing convenience and reducing the hassle of subsequent mold disassembly. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the quick-change movable insert device for injection molds provided by this utility model;

[0015] Figure 2 for Figure 1 The diagram shows the structural structure of the mold assembly.

[0016] Figure 3 for Figure 1 The diagram shows the structure of the ejector structure.

[0017] Figure 4 for Figure 1 The diagram shows the structure of the clamping rod.

[0018] Figure 5 for Figure 1 The diagram shows the structure of the core block positioning assembly.

[0019] The diagram is labeled as follows: 1. Base frame; 2. Mold assembly; 21. Processing mold; 22. Injection port; 23. Guide structure; 3. Core block positioning assembly; 31. Fixed frame structure; 32. Core block workpiece; 33. Fixed plate structure; 4. Dynamic clamping assembly; 41. Reset block; 42. Baffle structure; 43. Clamping rod; 44. Rotating frame; 45. Connecting structure; 46. Elastic support component; 5. Anti-deviation assembly; 51. Positioning structure; 52. Fixed rod structure; 6. Elastic ejection assembly; 61. Accommodating cavity; 62. Ejection structure; 63. Elastic reset component. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of the quick-change movable insert device for injection molds provided by this utility model; Figure 2 for Figure 1 The diagram shows the structural structure of the mold assembly. Figure 3 for Figure 1 The diagram shows the structure of the ejector structure. Figure 4 for Figure 1 The diagram shows the structure of the clamping rod. Figure 5 for Figure 1 The diagram shows the structure of the core block positioning assembly. A quick-change movable core block device for injection molds includes: a base frame 1 and a mold assembly 2. The mold assembly 2 is installed inside the base frame 1. The inner wall of the mold assembly 2 is provided with a core block positioning assembly 3, which is used for pre-positioning of the core block. Dynamic clamping assemblies 4 are installed on the inner walls of both ends of the mold assembly 2. The dynamic clamping assemblies 4 are used for dynamic clamping of the core block positioning assembly 3. Anti-deviation components 5 are installed on the inner wall of the dynamic clamping components 4. The anti-deviation components 5 are used for structural positioning of the dynamic clamping components 4. An elastic ejection assembly 6 is installed at the bottom of the mold assembly 2.

[0022] The mold assembly 2 includes a processing mold 21. An injection port 22 is provided on the inner wall of the processing mold 21 at the top. A guide structure 23 is installed at the bottom of the processing mold 21. The guide structure 23 is used for structural guidance of the processing mold 21.

[0023] During use, the guide structure 23 on the inner wall of the mold can provide accurate structural guidance to reduce the structural deviation of the mold 21 when it is closed.

[0024] The mold assembly 2 includes, but is not limited to, a manual mold closing assembly and a driven mold closing assembly; in this embodiment, the mold assembly 2 is preferably a manual mold closing assembly.

[0025] The core block positioning assembly 3 includes a frame structure 31 and a core block workpiece 32. The core block workpiece 32 is equipped with a plate structure 33 at both ends. The frame structure 31, in conjunction with the plate structure 33, can be used for the pre-positioning of the core block workpiece 32.

[0026] When pre-installing and positioning the core block inside the mold, the core block workpiece 32 can be directly placed inside the mold assembly 2. When placing the structure, the fixed plate structure 33 at both ends will be pre-clamped into the fixed frame structure 31 to provide pre-guidance for the structure.

[0027] Among them, the core block positioning component 3 includes, but is not limited to, conical surface positioning type and contour positioning type; in this case, the core block positioning component 3 is preferably contour positioning type.

[0028] The dynamic clamping assembly 4 includes a reset block 41 and a baffle structure 42. The baffle structure 42 slides on the inner walls of both ends of the mold assembly 2. A clamping rod 43 is installed on the side end of the baffle structure 42. A rotating frame 44 is installed on the side end of the reset block 41 and the baffle structure 42. A connecting structure 45 is rotatably connected to the inner wall of the side end of the rotating frame 44. The connecting structure 45 is used for the rotatable connection between the reset block 41 and the baffle structure 42. An elastic support member 46 is installed at the bottom of the reset block 41. The elastic support member 46 is used for the elastic support of the reset block 41.

[0029] When the internal core block is structurally positioned, the reset blocks 41 at both ends will be subjected to the squeezing force of the mold closing, and will automatically shrink downward during the structural squeezing. When the reset blocks 41 at both ends shrink downward, the connecting structure 45 with the rotation function at both ends will rotate synchronously, and then the baffle structure 42 will slide in position, so as to clamp the core block in position through the clamping rod 43 on the inner wall.

[0030] Among them, the dynamic locking component 4 includes, but is not limited to, wedge-shaped self-locking type and elastic locking type; in this embodiment, the dynamic locking component 4 is preferably of the elastic locking type.

[0031] The anti-deviation component 5 includes a positioning structure 51 and a fixed rod structure 52. The positioning structure 51 is installed on the top inner wall of the dynamic clamping component 4, and the fixed rod structure 52 is installed on the bottom inner wall of the dynamic clamping component 4. The positioning structure 51, in conjunction with the fixed rod structure 52, can be used for structural clamping of the dynamic clamping component 4.

[0032] When the mold assembly 2 performs the mold closing operation, the top fixed rod structure 52 will automatically limit itself to the inside of the positioning structure 51, thereby performing structural positioning processing on the internal dynamic clamping assembly 4 to reduce the workpiece deviation phenomenon when the internal structure slides.

[0033] Among them, the anti-deviation component 5 includes, but is not limited to, a gap compensation structure and a guide post and guide sleeve structure; in this embodiment, the anti-deviation component 5 is preferably a guide post and guide sleeve structure.

[0034] The elastic ejection assembly 6 includes a receiving cavity 61, which is formed on the bottom inner wall of the mold assembly 2. An ejection structure 62 is provided inside the receiving cavity 61. The ejection structure 62 is used for the elastic ejection of the core block positioning assembly 3. Elastic reset members 63 are installed at the four corners of the bottom of the ejection structure 62.

[0035] When the mold assembly 2 is opened, the bottom ejection structure 62 will be subjected to the elastic deformation of the elastic reset member 63, and the internal core block will automatically bounce upward so that the workpiece can be removed later, providing convenience for use.

[0036] Among them, the elastic ejection component 6 includes, but is not limited to, spring-driven type and linkage ejection type; in this embodiment, the elastic ejection component 6 is preferably linkage ejection type.

[0037] The working principle of the quick-change movable insert device for injection molds provided by this utility model is as follows:

[0038] When installing or replacing the internal core blocks in an injection mold, firstly, different core block positioning components 3 are placed inside the mold assembly 2. After placement, they are automatically pre-positioned. Then, the mold assemblies 2 at both ends are closed. When the mold assemblies 2 at both ends are closed, the dynamic clamping components 4 at both ends will automatically slide and clamp the core block positioning components 3 to reduce structural deviation. When the mold assembly 2 is closed, the anti-deviation component 5 on the inner wall will provide accurate structural guidance, reducing workpiece deviation of the dynamic clamping components 4. This prevents external bolts from securing the internal core blocks. When the mold assembly 2 is opened, the elastic ejection component 6 at the bottom will automatically eject the core block positioning components 3 upwards, and the dynamic clamping components 4 at both ends will automatically be elastically reset to facilitate subsequent workpiece demolding.

[0039] Compared with related technologies, the quick-change device for changing movable inserts in injection molds provided by this utility model has the following advantages:

[0040] When installing or replacing the internal core blocks in an injection mold, to improve the flexibility of the core blocks, the core block positioning component 3 and the dynamic clamping component 4 work together. This allows for convenient pre-positioning of the internal mechanical structure without manual intervention. Furthermore, the mechanical force during mold closing automatically engages the dynamic clamping component 4 with the inner wall groove of the core block positioning component 3, forming a rigid lock. This eliminates the need for external bolts for structural fastening, thus improving the ease of positioning and installation. Secondly, when the internal mold is being opened, the elastic ejection component 6 at the bottom automatically ejects the finished workpiece, providing convenience and reducing the complexity of subsequent mold disassembly.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for quickly changing movable inserts in injection molds, characterized in that, include: The base frame and the mold assembly are provided. The mold assembly is installed inside the base frame. The inner wall of the mold assembly is provided with a core block positioning component for pre-positioning the core block. Dynamic clamping components are installed on the inner walls of both ends of the mold assembly for dynamically clamping the core block positioning component. Anti-deviation components are installed on the inner walls of the dynamic clamping components for structural positioning of the dynamic clamping components. An elastic ejection component is installed at the bottom of the mold assembly.

2. The quick-change device for a movable insert in an injection mold according to claim 1, characterized in that, The mold assembly includes a processing mold, with an injection port on the inner wall of the top processing mold and a guide structure installed at the bottom of the processing mold for structural guidance of the processing mold.

3. The quick-change device for a movable insert in an injection mold according to claim 1, characterized in that, The core block positioning assembly includes a frame structure and a core block workpiece. The core block workpiece has fixed plate structures installed at both ends. The frame structure, in conjunction with the fixed plate structure, can be used for the pre-positioning of the core block workpiece.

4. The quick-change device for a movable insert in an injection mold according to claim 1, characterized in that, The dynamic clamping assembly includes a reset block and a baffle structure. The baffle structure slides on the inner walls of both ends of the mold assembly. A clamping rod is installed on the side end of the baffle structure. A rotating frame is installed on the side end of the reset block and the baffle structure. A connecting structure is rotatably provided on the inner wall of the side end of the rotating frame. The connecting structure is used for the rotatable connection between the reset block and the baffle structure. An elastic support is installed at the bottom of the reset block. The elastic support is used for the elastic support of the reset block.

5. The quick-change device for a movable insert in an injection mold according to claim 1, characterized in that, The anti-deviation component includes a positioning structure and a fixed rod structure. The positioning structure is installed on the top inner wall of the dynamic clamping component, and the fixed rod structure is installed on the bottom inner wall of the dynamic clamping component. The positioning structure, in conjunction with the fixed rod structure, can be used for structural clamping of the dynamic clamping component.

6. The quick-change device for a movable insert in an injection mold according to claim 1, characterized in that, The elastic ejection assembly includes a receiving cavity, which is formed on the bottom inner wall of the mold assembly. An ejection structure is provided inside the receiving cavity. The ejection structure is used for the elastic ejection of the core block positioning assembly. Elastic reset members are installed at the four corners of the bottom of the ejection structure.

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