Multi-core mechanism injection mold

Abstract

The utility model relates to a kind of injection mould of multiple core-pulling mechanism, including mould frame and mould core, the mould core has cavity and is loaded into mould frame;Core-pulling mechanism is installed in the mould frame, and the core-pulling mechanism includes X-axis core-pulling group, Y-axis core-pulling group and toothed core-pulling mechanism, the toothed core-pulling mechanism includes core-pulling slide and core-pulling slider, the core-pulling slide is provided with the guide slide rail of the displacement direction of core-pulling change, the core-pulling slider is slidably connected with the core-pulling slide by guide slide rail;It also includes toothed mechanism, the toothed shaft in the toothed mechanism is connected with the core-pulling slide, and sliding core-pulling displacement is carried out along with the core-pulling slide;The toothed shaft has toothed sleeve, the toothed sleeve is provided with screw thread forming section, and the screw thread forming section extends into the cavity.The utility model toothed shaft is assembled on the core-pulling slide and slides core-pulling along with the core-pulling slider, changes the direction of core-pulling, achieves the purpose of reducing core-pulling stroke, reduces the mould concrete, reduces mould cost, reduces operation difficulty.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to an injection mold with a multi-core-pulling mechanism. Background Technology

[0002] To manufacture such Figure 1 The aforementioned accessory is a multi-channel tubular body. Product 1 has an internal threaded hole 11 with internal threads. To process the threads, a thread-reeling mechanism is required. However, the thread-reeling mechanism needs to eject the injection-molded product while manufacturing the threads, so a core-pulling mechanism is required.

[0003] To meet the above requirements, and following the traditional core-pulling mechanism design, the core needs to be moved linearly along the centerline of the internal threaded hole 11 until the core is completely extracted, thus completing the forming process of the internal threaded hole 11. This process obviously requires a large core-pulling stroke, which significantly increases the mold volume. Furthermore, the core-pulling position needs to be exposed on the top or bottom plate of the mold base. Therefore, the mold suffers from problems such as large size and difficulty in core pulling during actual operation. Additionally, the structure must be coordinated with an ejection mechanism to achieve product ejection, greatly increasing the complexity of the mold structure and raising manufacturing and maintenance costs.

[0004] Therefore, how to design a processing structure that combines mold miniaturization and simplification with core pulling and thread forming while retaining the traditional mold side core pulling displacement design is one of the technical problems that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide an injection mold with a multi-core-pulling mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An injection mold with a multi-core-pulling mechanism includes a mold frame and a mold core, wherein the mold core has a cavity and is inserted into the mold frame; The mold frame is equipped with a core-pulling structure, which includes an X-axis core-pulling group, a Y-axis core-pulling group, and a threaded core-pulling mechanism. The threaded core-pulling mechanism includes a core-pulling slide and a core-pulling slider. The core-pulling slide is provided with a guide rail to change the direction of core-pulling displacement. The core-pulling slider is slidably connected to the core-pulling slide through the guide rail. It also includes a coiling mechanism, wherein the coiling shaft in the coiling mechanism is connected to the core-pulling slide and slides and pulls the core along with the core-pulling slide. The coiled shaft has a coiled sleeve, and the coiled sleeve is provided with a thread forming section, which extends into the cavity.

[0007] A further preferred embodiment: the coiled tooth core-pulling mechanism further includes a core-pulling drive component; The core-pulling drive component is installed on the outside of the mold frame, and its displacement direction is perpendicular to the outer side of the mold frame. The core-pulling drive component is connected to the core-pulling slider via the core-pulling slide block.

[0008] A further preferred embodiment: the guide rail is inclined toward the bottom plate of the mold frame; The core-pulling slider has a core-pulling stroke that is inclined towards the bottom plate of the mold frame, away from the cavity.

[0009] A further preferred embodiment: the coilover mechanism includes a coilover drive component, a transmission assembly, and the coilover shaft connected and linked in sequence, wherein: The transmission assembly includes a coiled tooth rack, a transmission gear assembly, and a linkage gear, which are sequentially meshed and connected to transmit power. In the coilover drive component, the drive teeth mesh with the coilover rack; The coiled sleeve outside the coiled shaft is connected to and linked with the linkage tooth; The coilover drive unit drives the coilover tooth strip, transmission tooth group and linkage tooth in sequence through the drive teeth, thereby driving the coilover sleeve to rotate and retract the teeth.

[0010] A further preferred embodiment: the coilover shaft includes a coilover core, a core rod, and the coilover sleeve, wherein: The coiled tooth core is provided with an annular groove, and the coiled tooth sleeve is rotatably installed in the annular groove; The core rod is inserted into the coiled tooth core; The coilover shaft is connected to the core-pulling slider via the core rod.

[0011] A further preferred embodiment: the X-axis core-pulling assembly includes a first X-axis core-pulling mechanism and a second X-axis core-pulling mechanism with opposite core-pulling directions.

[0012] A further preferred embodiment: the Y-axis core-pulling assembly includes a first Y-axis core-pulling mechanism and a second Y-axis core-pulling mechanism with opposite core-pulling directions.

[0013] By adopting the above technical solution, this utility model has the following advantages compared with the prior art: This invention utilizes a core-pulling mechanism to drive the core-pulling shaft within the mechanism to move and pull the core out of the mold cavity. The core-pulling slide in the core-pulling mechanism is equipped with an inclined guide rail. The core-pulling slide is slidably connected to the core-pulling slide. The core-pulling shaft is mounted on the core-pulling slide and slides with the core-pulling slider to pull the core, thereby changing the core-pulling direction and reducing the core-pulling stroke. This greatly reduces the mold volume, lowers mold costs, and also reduces the operational difficulty in actual mold production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the product structure; Figure 2 This is a three-dimensional structural schematic diagram of the injection mold described in the embodiment of this utility model; Figure 3 This is a schematic diagram of the internal structure of the injection mold described in this embodiment of the utility model. Figure 1 ; Figure 4 This is a schematic diagram of the internal structure of the injection mold described in this embodiment of the utility model. Figure 2 ; Figure 5 This is a three-dimensional schematic diagram of the core-pulling structure described in the embodiments of this utility model. Figure 1 ; Figure 6 This is a three-dimensional schematic diagram of the core-pulling structure described in the embodiments of this utility model. Figure 2 ; Figure 7 This is a top view of the core-pulling structure described in the embodiment of this utility model; Figure 8 This is a side view of the core-pulling structure described in the embodiment of this utility model; Figure 9 This is a cross-sectional view of the core-pulling structure described in the embodiment of this utility model.

[0015] The markings on the accompanying drawings in the above specification are explained as follows: 1. Product; 11. Internal threaded hole; 110. Top plate; 120. Pad plate; 130. Fixing plate; 140. Upper formwork; 210. Base plate; 220. Ejection mechanism; 230. Square iron; 240. Lower formwork; 310. First core-pulling mechanism of X-axis; 311. First drive component of X-axis; 312. First sliding block of X-axis; 320. Second core-pulling mechanism; 321. Second drive component of X-axis; 322. Second slider of X-axis; 410. Y-axis first core-pulling mechanism; 411. Y-axis first drive component; 412. Y-axis first slider; 420. Y-axis second core-pulling mechanism; 421. Y-axis second drive component; 422. Y-axis second slider; 500. Coil-pulling core-pulling mechanism; 510. Core-pulling drive component; 520. Core-pulling slide block; 530. Core-pulling slider; 610. Upper mold core; 620. Lower mold core; 700. Coilover mechanism; 710. Coilover drive component; 720. Coilover gear bar; 730. Transmission gear set; 740. Linkage gear; 750. Coilover puller; 751. Coilover sleeve; 752. Coilover core; 753. Core rod. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] It should be noted that in this utility model, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element of this utility model must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Example like Figure 2 The injection mold shown is specifically designed for processing such as Figure 1 Product 1 shown is a tubular body with multiple openings, and an internal threaded hole 11 is provided in the middle part. Threads are also provided on the inner wall of the internal threaded hole 11. Based on the structural features of Product 1, this utility model discloses an injection mold with a multi-core-pulling mechanism, which is provided with a core-pulling structure, and the core-pulling structure includes multiple core-pulling mechanisms.

[0019] like Figure 2 , Figure 3 and Figure 4 As shown, the injection mold includes a mold frame and a mold core. The mold core has a cavity and is assembled inside the mold frame. The mold frame includes an upper mold assembly and a lower mold assembly. The mold core includes an upper mold core and a lower mold core. The upper mold core is installed in the upper mold assembly, and the lower mold core is installed in the lower mold assembly. The upper and lower mold cores are driven by the upper and lower mold assemblies to open or close the mold. Specifically: The upper module includes a top plate 110, a pad plate 120, a fixing plate 130, and an upper template 140 arranged sequentially, with the mold core embedded in the upper template 140; the lower module includes a bottom plate 210, square irons 230, an ejection mechanism 220, and a lower template 240, with two square irons 230 symmetrically distributed and fixed on the bottom plate 210, and the lower template 240 fixed to the connection of the two square irons 230. The lower template 240, the bottom plate 210, and the two square irons 230 enclose an ejection space, and the ejection mechanism 220 is assembled in the ejection space. The ejection mechanism 220 includes an ejection plate assembly and ejector pins, with the ejector pins fixed on the ejection plate assembly. The ejection plate assembly is driven to move from the bottom plate 210 toward the lower template 240, thereby enabling the product 1 to be ejected from the mold core after the mold has been opened.

[0020] like Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, the injection mold further includes a core-pulling mechanism, which comprises an X-axis core-pulling group and a Y-axis core-pulling group. The X-axis core-pulling group includes a first X-axis core-pulling mechanism 310 and a second X-axis core-pulling mechanism 320, whose core-pulling displacement directions are opposite and on the same plane. The Y-axis core-pulling group includes a first Y-axis core-pulling mechanism 410 and a second Y-axis core-pulling mechanism 420, whose core-pulling displacement directions are opposite and on the same plane.

[0021] Specifically: such as Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the X-axis first core-pulling mechanism 310 includes an X-axis first drive member 311 and an X-axis first slider. A first core is mounted on the side of the X-axis first slider facing away from the X-axis first drive member 311. The X-axis first slider is installed at the output end of the X-axis first drive member 311. The first core is driven by the X-axis first drive member 311 to perform sliding core-pulling displacement via the X-axis first slider. The X-axis second core-pulling mechanism 320 includes an X-axis second drive member 321 and an X-axis second slider 322. A second core is mounted on the side of the X-axis second slider 322 facing away from the X-axis second drive member 321. The X-axis second slider 322 is installed at the output end of the X-axis second drive member 321. The second core is driven by the X-axis second drive member 321 to perform sliding core-pulling displacement via the X-axis second slider 322.

[0022] Specifically: such as Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the Y-axis first core-pulling mechanism 410 includes a Y-axis first drive member 411 and a Y-axis first slider 412. A third core is mounted on the side of the Y-axis first slider 412 facing away from the Y-axis first drive member 411. The Y-axis first slider 412 is installed at the output end of the Y-axis first drive member 411. The third core is driven by the Y-axis first drive member 411 to perform sliding core-pulling displacement via the X-axis first slider. The Y-axis second core-pulling mechanism 420 includes a Y-axis second drive member 421 and a Y-axis second slider 422. A fourth core is mounted on the side of the Y-axis second slider 422 facing away from the Y-axis second drive member 421. The Y-axis second slider 422 is installed at the output end of the Y-axis second drive member 421. The fourth core is driven by the Y-axis second drive member 421 to perform sliding core-pulling displacement via the Y-axis second slider 422.

[0023] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the core-pulling structure also includes a threaded core-pulling mechanism 500. The threaded core-pulling mechanism 500 drives the threaded mechanism 700 to perform core-pulling displacement. The threaded mechanism 700 is assembled in the lower template 240 of the mold frame. Its threaded sleeve 751 extends into the cavity. After the material is injected into the cavity and cooled and formed, it rotates out, thereby machining the threads in the inner threaded hole 11 of the product 1.

[0024] like Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the coilover mechanism 700 includes a coilover drive 710, a transmission assembly, and a coilover shaft 750. The coilover drive 710 drives the transmission assembly, which in turn drives the coilover shaft 750 to rotate and retract the coilover teeth. Specifically, the coilover drive 710 includes a drive body and drive teeth, with the drive teeth mounted on the output end of the drive body. The transmission assembly includes a coilover rack 720, a transmission gear assembly 730, and a linkage gear 740 that mesh and drive in sequence. One section of the coilover rack 720 extends into the lower module. The drive teeth of the coilover drive 710 mesh with the coilover rack 720 to drive the transmission gear assembly 730, ultimately driving the coilover shaft. More specifically: The transmission gear set 730 includes a synchronous shaft and two gears distributed vertically. Both gears are connected to the synchronous shaft. The lower gear meshes with the coilover rack 720, and the upper gear meshes with the linkage gear 740. The linkage gear 740 is mounted on the coilover shaft, thereby driving the coilover shaft to rotate synchronously, thus realizing the tooth retraction forming.

[0025] like Figure 5 , Figure 6 and Figure 9As shown, the coilover shaft is cylindrical and includes a coilover sleeve 751 and a coilover core 752. The coilover core 752 is fitted outside the core rod 753, and the coilover sleeve 751 is fitted outside the coilover core 752. The end of the coilover sleeve 751 has a threaded section. The end of the coilover core 752 protrudes from the coilover sleeve 751 and cooperates with the threaded section to form a core with an internal threaded hole 11. The core with the internal threaded hole 11 extends into the cavity of the mold core. The linkage tooth 740 is fixed outside the coilover sleeve 751, that is, the linkage tooth 740 drives the coilover sleeve 751 to rotate and retract its threads. It should be noted that the coilover sleeve 751 and the coilover core 752 are an inner and outer fitted structure that can be relatively displaced, but the rotational retraction stroke of the coilover sleeve 751 is limited by the internal threaded hole 11. In detail: The outer ring sidewall of the coilover core 752 is provided with an installation groove, and the coilover sleeve 751 is assembled in the installation groove. The coilover sleeve 751 can rotate in the installation groove. With the above structure, the coilover sleeve 751 can rotate freely relative to the coilover core 752. Its axial movement stroke is limited by the installation groove of the coilover core 752. That is, when the coilover core 752 is driven to move along its axial direction, the coilover sleeve 751 is driven to move synchronously.

[0026] like Figure 5 , Figure 6 and Figure 9 As shown, the coiled core-pulling mechanism 500 includes a core-pulling drive component 510, a core-pulling slide block 520, and a core-pulling slider 530. The core-pulling drive component 510 is fixed to the outer wall of the lower module, and the driving direction of the core-pulling drive component 510 is perpendicular to the outer wall of the lower module. The output end of the core-pulling drive component 510 is connected to the core-pulling slide block 520 to drive the core-pulling slide block 520 to slide within the lower module. It should be noted that one end of the core-pulling slide block 520 is connected to the core-pulling drive component 510, and the other end is provided with a guide rail along the core-pulling direction toward the base plate 210. The guide rail is a guide groove, and the core-pulling slider 530 is slidably connected to the core-pulling slide block 520 through the guide groove. This design enables the core-pulling slider 530 to tilt towards the base plate 210 during the core-pulling displacement process, thus changing the direction of the core-pulling displacement. This allows for a conventional design of the core-pulling drive component 510, without increasing the mold volume and reducing the difficulty in actual operation.

[0027] It should be noted that: such as Figure 9As shown, the coiled tooth shaft is connected to the core-pulling slider 530, thereby using the core-pulling drive 510 to drive the coiled tooth shaft out of the cavity via the core-pulling slide block 520 and the core-pulling slider 530. Specifically, the core-pulling slider 530 includes two stacked blocks, namely an upper slider and a lower slider, which are integrally connected. The upper slider has a mounting hole, and the coiled tooth shaft is inserted into the mounting hole. The inner core of the coiled tooth is fixed to the lower slider.

[0028] To elaborate further: such as Figure 9 As shown, the core rod 753 inside the coilover shaft is a mounting component, that is: the core rod 753 is fixed on the lower slider, the coilover core 752 is fitted outside the core rod 753, and the coilover sleeve 751 is fitted outside the coilover core 752. Thus, without affecting the rotation and unwinding of the coilover sleeve 751, the entire coilover shaft can be mounted on the core-pulling slider 530, and the core-pulling slider 530 can be used to drive the coilover shaft to perform core-pulling displacement.

[0029] The core-pulling drive component 510 is a core-pulling cylinder. The core-pulling cylinder is equipped with a locking component, which is embedded in the slider seat to lock the slider seat, thereby preventing displacement of the auger shaft during the rotation and unwinding process of the auger mechanism 700, which would affect the molding process of product 1.

[0030] Combination Figures 2 to 9 As shown, the demolding process of the injection mold with the multi-core-pulling mechanism is as follows: Mold opening: The upper mold assembly and the lower mold assembly respectively drive the upper mold core and the lower mold core to separate relative to each other, thereby achieving the purpose of mold opening; Core pulling: The X-axis core pulling group and the Y-axis core pulling group perform core pulling operations respectively, so as to remove each slider from the cooled and formed product 1; Tooth retraction: The coilover drive 710 drives the coilover sleeve 751 in the coilover shaft to rotate and retract the tooth through the transmission assembly; Core pulling in the tufted tooth mechanism 500: The core pulling drive belt in the core pulling mechanism 500 drives the core pulling slider 530 through the core pulling slide 520. Utilizing the core pulling trajectory set at an inclination on the tufted tooth seat, the core pulling slider 530 is pulled out from the cavity through the tufted tooth shaft.

[0031] Product 1 ejection: Product 1 is ejected from the lower mold core 620 using the ejection mechanism 220.

[0032] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An injection mold with a multi-core-pulling mechanism, characterized in that: It includes a mold frame and a mold core, wherein the mold core has a cavity and is inserted into the mold frame; The mold frame is equipped with a core-pulling structure, which includes an X-axis core-pulling group, a Y-axis core-pulling group, and a threaded core-pulling mechanism. The threaded core-pulling mechanism includes a core-pulling slide and a core-pulling slider. The core-pulling slide is provided with a guide rail to change the direction of core-pulling displacement. The core-pulling slider is slidably connected to the core-pulling slide through the guide rail. It also includes a coiling mechanism, wherein the coiling shaft in the coiling mechanism is connected to the core-pulling slide and slides and pulls the core along with the core-pulling slide. The coiled shaft has a coiled sleeve, and the coiled sleeve is provided with a thread forming section, which extends into the cavity.

2. The injection mold with a multi-core-pulling mechanism according to claim 1, characterized in that: The coiled tooth core-pulling mechanism also includes a core-pulling drive component; The core-pulling drive component is installed on the outside of the mold frame, and its displacement direction is perpendicular to the outer side of the mold frame. The core-pulling drive component is connected to the core-pulling slider via the core-pulling slide block.

3. The injection mold with a multi-core-pulling mechanism according to claim 1 or 2, characterized in that: The guide rail is inclined toward the bottom plate of the mold frame; The core-pulling slider has a core-pulling stroke that is inclined towards the bottom plate of the mold frame, away from the cavity.

4. The injection mold with a multi-core-pulling mechanism according to claim 1, characterized in that: The coilover mechanism includes a coilover drive component, a transmission assembly, and the coilover shaft, which are connected and linked in sequence, wherein: The transmission assembly includes a coiled tooth rack, a transmission gear assembly, and a linkage gear, which are sequentially meshed and connected to transmit power. In the coilover drive component, the drive teeth mesh with the coilover rack; The coiled sleeve outside the coiled shaft is connected to and linked with the linkage tooth; The coilover drive unit drives the coilover tooth strip, transmission tooth group and linkage tooth in sequence through the drive teeth, thereby driving the coilover sleeve to rotate and retract the teeth.

5. The injection mold with a multi-core-pulling mechanism according to claim 1 or 4, characterized in that: The coilover shaft includes a coilover core, a core rod, and the coilover sleeve, wherein: The coiled tooth core is provided with an annular groove, and the coiled tooth sleeve is rotatably installed in the annular groove; The core rod is inserted into the coiled tooth core; The coilover shaft is connected to the core-pulling slider via the core rod.

6. The injection mold with a multi-core-pulling mechanism according to claim 1, characterized in that: The X-axis core-pulling assembly includes a first X-axis core-pulling mechanism and a second X-axis core-pulling mechanism with opposite core-pulling directions.

7. The injection mold with a multi-core-pulling mechanism according to claim 1, characterized in that: The Y-axis core-pulling assembly includes a first Y-axis core-pulling mechanism and a second Y-axis core-pulling mechanism with opposite core-pulling directions.

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