Injection mold for multi-slot-position product
By designing injection molds for multi-slot products and adopting pre-opening molds and core-pulling mechanisms, the problems of low-cost ejection and avoiding sticking to the mold were solved, achieving efficient and complete product demolding.
Patent Information
- Application Number
- CN202520614659.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-02
AI Technical Summary
Existing technologies are insufficient to effectively eject multi-slot products A at low cost, and there is a sticking phenomenon, resulting in high mold costs and production difficulties.
Design a multi-slot injection mold for products, employing a mold frame, mold core, and core-pulling mechanism. By coordinating pre-mold opening and core-pulling mechanisms, the clamping force of inserts is reduced, and the protrusions and inserts of the core block provide positioning force at the moment of mold opening, thus avoiding sticking to the mold.
It enables efficient and complete ejection of multi-slot products under low-cost conditions, avoids sticking to the mold, ensures smooth product demolding, and reduces mold costs.
Smart Images
Figure CN223948402U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection mold field especially is injection mold for multi -slot product. BACKGROUND
[0002] As Figure 1 The product A can be divided into two integrally formed parts, the first part is provided with a plurality of slots, and the plurality of slots are arranged in a matrix, and the second part is a C-shaped bracket. The first part is stacked on the second part and integrally connected with the second part, one end of the second part is a closed end, and the other end is an open end, and the open end is provided with an opening A1.
[0003] In order to manufacture the product A as Figure 1 Because the product A has the above-mentioned structural characteristics, it is difficult to eject the product A during production. If a stripper is used for ejection, the mold cost is too high. If the stripper is not used for ejection, the mold needs to be redesigned.
[0004] Therefore, how to effectively eject the product A at low cost and avoid sticking to the mold is one of the technical problems that need to be solved by those skilled in the art. CONTENT OF THE UTILITY MODEL
[0005] The utility model aims at providing a kind of injection mold for multi -slot product.
[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0007] An injection mold for multi -slot product, comprising a mold frame, a mold core and a core pulling mechanism, the mold core and the core pulling mechanism are installed in the mold frame, the mold frame comprises an upper die set and a lower die set, the mold core comprises an upper die and a lower die, the upper die is installed in the upper die set, and the lower die is installed in the lower die set, wherein:
[0008] The upper die set comprises a top plate, an upper die plate and an insert, the top plate is arranged close to the upper die plate, the insert is fixedly connected with the top plate through an insert fixing plate to synchronize displacement with the top plate and complete the pre-mold opening movement;
[0009] The lower die is slidably installed with a core block, the core block is driven by the core pulling mechanism to displace;
[0010] The cross section of the core block is in the shape of an I-beam, and a core plug is arranged on the side away from the core pulling mechanism, and the core plug is inserted and positioned with the lower die.
[0011] Further preferably, the lower die is provided with a sliding groove, and the core block is slidably installed in the sliding groove.
[0012] Further preferably, the two wings of the core block away from the side of the upper die set are provided with protrusions, the protrusions of the two wings are symmetrically distributed and are clamped with the lower die core, so as to position the core block at the moment of opening the mold.
[0013] Further preferably, the core plug is arranged at the end of the core block and away from the side of the upper die set.
[0014] Further preferably, the lower die core is provided with an insertion hole.
[0015] After the core plug is reset after the core pulling movement is completed, the core plug is inserted into the insertion hole, so as to position the core block.
[0016] Further preferably, the side of the top plate facing the upper die plate is provided with an embedding groove, and the insert fixing plate is fixed in the embedding groove.
[0017] The insert passes through the upper die plate and the upper die core and extends into the product forming cavity in the mold core.
[0018] Further preferably, the insert is in a columnar shape, and the end of the insert away from the insert fixing plate is a forming end, and the forming end is in a needle shape.
[0019] Further preferably, the lower die set comprises an ejection mechanism, and the ejection mechanism comprises an ejection plate set and an ejector pin.
[0020] The ejector pin is fixedly connected with the ejection plate set and is driven by the ejection plate set to move towards the upper die set to perform the ejection operation.
[0021] The ejector pin passes through the lower die core and extends into the forming cavity in the mold core.
[0022] Further preferably, the core pulling mechanism comprises a core pulling oil cylinder, an oil cylinder connecting shaft and a sliding block connected in sequence.
[0023] The sliding block is connected with the core block and is driven by the sliding block to move away from the mold core to perform the core pulling movement.
[0024] After the above technical scheme is adopted, compared with the background art, the present application has the following advantages:
[0025] 1. The insert for forming the slot hole of the matching product is arranged in the upper die set, and the insert is pre-opened before the mold is opened by using the pre-opening structure, so that the holding force of the front mold is greatly reduced, and under the premise of the low-cost mold using the ejector pin, the phenomenon of mold sticking during the opening of the mold is avoided.
[0026] 2. The core pulling mechanism of the present application is provided with the core plug and the protrusion in the core block, so that the core block can be effectively positioned, and the effective positioning force of the core block can be provided at the moment of opening the mold, the sticking of the mold is further avoided, and the product is efficiently and completely discharged. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is a product structure schematic diagram;
[0028] Figure 2 is a structure schematic diagram of the injection mold for the multi-slot product in the embodiment of the utility model;
[0029] Figure 3 is a structure section of the injection mold for the multi-slot product in the embodiment of the utility model Figure 1 ;
[0030] Figure 4 is a structure section of the injection mold for the multi-slot product in the embodiment of the utility model Figure 2 ;
[0031] Figure 5 is the structure enlarged view of Q in the structure shown in Figure 4
[0032] The mark explanation of the above specification drawing is as follows:
[0033] 110, top plate;120, upper mold plate;130, insert;140, insert fixing plate;
[0034] 210, bottom plate;220, square iron;230, lower mold plate;241, ejection plate set;242, ejector pin;243, reset spring;
[0035] 310, upper mold core;320, lower mold core;
[0036] 410, core-pulling oil cylinder;411, oil cylinder connecting shaft;430, core-pulling slider;440, core block;441, core plug;
[0037] A, product;A1, opening. DETAILED DESCRIPTION
[0038] In order to make the purpose, technical scheme and advantages of the utility model more clear and intelligible, the utility model is further described in detail below by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.
[0039] It needs to be explained in the utility model that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are all based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and are not used to indicate or imply that the devices or elements of the utility model must have a specific orientation, therefore, it cannot be understood as a limitation on the utility model.
[0040] EMBODIMENT
[0041] For processing product A as shown in Figure 1 , the product A is in the shape of a long strip as a whole, and a plurality of slot holes are arranged in a matrix on one side surface. In combination with the structural features of the product A, the conventional mold is inevitably difficult to eject in production. If the mold is ejected by a cylinder, the cost of the mold is too high. How to achieve fast and convenient ejection under the premise of low cost, and at the same time avoid the problem of product A being pulled by the holding force is one of the technical problems to be solved by the skilled in the art.
[0042] To achieve the above purpose, the inventor designs a multi-slot product A injection mold, which designs the slot hole forming insert 130 in the upper mold set, and pre-separates the insert 130 before the opening motion of the upper mold plate 120 and the lower mold plate 230, thereby greatly reducing the holding force of the upper mold plate 120 on the insert 130. In addition, the structure design of the core block in the core pulling mechanism effectively avoids the phenomenon of mold sticking, thereby effectively forming the product A by core pulling.
[0043] As shown in Figure 2 , the multi-slot product A injection mold comprises a mold frame, a mold core and a core pulling mechanism, wherein the core pulling mechanism and the mold core are installed in the mold frame.
[0044] As shown in Figure 2 , Figure 3 and Figure 4As shown, the mold frame comprises an upper mold set and a lower mold set. The upper mold set comprises a top plate 110, an insert fixing plate 140, an upper mold plate 120 and an insert 130. The top plate 110 is designed in close contact with the upper mold plate 120. A recessed groove is formed in the direction of the upper mold plate 120. The insert fixing plate 140 is embedded in the recessed groove. The insert fixing plate 140 is fixedly connected with the top plate 110 and synchronously displaced with the top plate 110. A plurality of inserts 130 are arranged in adaptation with the product A. Any of the inserts 130 is fixed on the insert fixing plate 140 and extends through the upper mold plate 120 into a mold core for injection molding processing of the product A. An upper mold core 310 recess is formed in the side of the upper mold plate 120 in the direction of the lower mold set for partial structure adaptation of the embedded mold core. The lower mold set comprises a bottom plate 210, a square iron 220, a lower mold plate 230 and an ejection mechanism. The lower mold plate 230 is provided with a lower mold core 320 recess on the side in the direction of the upper mold plate 120 for assembly of the mold core. Two square irons 220 are symmetrically distributed and fixed on the bottom plate 210. The lower mold plate 230 is fixed on the square iron 220. The lower mold plate 230, the square iron 220 and the bottom plate 210 enclose an ejection cavity. The ejection mechanism comprises an ejection plate set 241, an ejector pin 242 and a return spring 243. The ejection plate set 241 is placed in the ejection cavity and is driven by an ejection oil cylinder to perform ejection displacement in the direction of the upper mold set to achieve the purpose of ejection demolding of the product A. The ejector pin 242 is fixed on the ejection plate set 241. The ejector pin 242 extends through the lower mold plate 230 and into the mold core. The driven ejection plate set 241 drives the ejector pin 242 to eject the molded product A from the mold core to achieve the demolding purpose. The return spring 243 is fixed between the lower mold plate 230 and the ejection plate set 241. The ejection plate set 241 performing ejection displacement compresses the return spring 243. When the ejection oil cylinder is unloaded, the return spring 243 can drive the ejection plate set 241 to displace in the direction of the bottom plate 210 by using the spring return force to achieve the purpose of ejection reset.
[0045] Specifically, as Figure 3 and Figure 4As shown, any of the inserts 130 is a cylinder, one end of which is a fixed end and the other end is a forming end; the fixed end has a clamping protruding ring, due to the arrangement of the clamping protruding ring, the fixed end is T-shaped, the insert fixing plate 140 is provided with an insert 130 mounting hole, the insert 130 mounting hole is a through hole, and a protruding ring embedding groove is arranged on one side of the through hole towards the top plate 110, the insert 130 passes through the insert 130 fixing hole, and the clamping protruding ring is clamped in the protruding ring embedding groove, so as to fix the insert 130 on the top plate 110; in other words, when the top plate 110 is separated from the upper mold plate 120, the top plate 110 drives the insert 130 to move away from the upper mold plate 120, so as to drive the insert 130 to separate and move, thereby greatly reducing the holding force of the upper mold plate 120. The forming end is needle-shaped and extends into the straight mold core to cooperate with the product A to form.
[0046] As Figure 3 and Figure 4 shown, the mold core includes an upper mold core 310, a core block 440 and a lower mold core 320, the core block 440 is arranged in the lower mold core 320, the upper mold core 310 and the lower mold core 320 are mutually buckled to form a product forming cavity which is matched with the product A. Specifically: the upper mold core 310 is fixed in the upper mold core 310 groove of the upper mold plate 120, the upper mold core 310 is fixedly connected with the upper mold plate 120, the lower mold core 320 is fixed in the lower mold core 320 groove of the lower mold plate 230, and the lower mold core 320 is fixedly connected with the lower mold plate 230. When the lower mold plate 230 is driven to move away from the upper mold plate 120, the upper mold core 310 and the lower mold core 320 are driven to separate.
[0047] More specifically: as Figure 3 and Figure 4 shown, the lower mold core 320 is provided with a sliding groove, the core block 440 is slidably arranged in the sliding groove of the lower mold core 320, and the forming end of any of the above-mentioned inserts 130 extends into the product forming cavity through the upper mold plate 120 and the upper mold core 310. It should be noted that the insert 130 does not contact the core block 440.
[0048] It should be noted that: as Figure 2 and Figure 3 shown, the lower mold plate 230 has a core pulling extension, and the lower mold core 320 groove of the lower mold plate 230 extends through to the core pulling extension.
[0049] As Figure 3 and Figure 4As shown, the core pulling mechanism includes a core pulling oil cylinder 410, an oil cylinder connecting shaft 411, a core pulling slider 430 and a core block 440. The core pulling oil cylinder 410 is fixed at the end of the core pulling extension section, and the output end of the core pulling oil cylinder 410 is provided with an oil cylinder connecting shaft 411 connected with the core pulling oil cylinder 410 and penetrating through the side wall of the core pulling extension section and extending into the groove of the lower mold core 320. The core pulling slider 430 is connected with the oil cylinder connecting shaft 411, so as to be driven by the core pulling oil cylinder 410 to slide and displace, and the core pulling slider 430 is fixedly connected with the core block 440. The core pulling oil cylinder 410 is connected with the core pulling slider 430 through the oil cylinder connecting shaft 411, and the core block 440 is connected with the oil cylinder connecting shaft 411 through the core pulling slider 430, so as to be driven by the core pulling oil cylinder 410 to drive the oil cylinder connecting shaft 411, the core pulling slider 430 and finally the core block 440 to displace.
[0050] It should be noted that, as shown in Figure 3 As shown, the end of the core block 440 away from the core pulling oil cylinder 410 is a plug-in end, the plug-in end has a core plug 441 outward, the core plug 441 is arranged close to the lower mold plate 230, the lower mold core 320 is provided with an insertion hole, and the core plug 441 is inserted into the insertion hole. The core pulling slider 430 drives the oil cylinder connecting shaft 411, the core pulling slider 430 and finally the core block 440 to displace, at this time, the core plug is integrally connected with the core block 440 and synchronously displaces with the core block 440, that is, the core plug 441 is pulled out of the insertion hole and synchronously displaces with the core block 440; the core block 440 which has completed the core displacement is driven by the core pulling slider 430 to reset, at this time, the core plug 441 is driven by the core block 440 to be plugged into the insertion hole, so as to effectively position the core block 440 and ensure that the core block 440 is reset to the right position, avoiding misplacement and other problems.
[0051] It should be noted that, as shown in Figure 4 and Figure 5 As shown, the two wings of the core block 440 close to the lower mold plate 230 are provided with protrusions, any of the protrusions is extended to the two sides of the core block 440, and the protrusions of the two wings are symmetrically distributed on the two sides of the core block 440. The core block 440 close to the upper mold plate 120 is in T shape, and the core block 440 cooperates with the two protrusions to form an I-shaped core block 440. Therefore, the sliding groove provided on the lower mold core 320 is in inverted T shape, the protrusions of the two wings and the core block 440 are inserted into the sliding groove, forming a core block 440 structure which can be effectively limited in the opening direction, so as to ensure that the product A can be brought back at the moment of opening the mold and in the core pulling process, thereby effectively avoiding the phenomenon of sticking to the mold core 310, and effectively ensuring smooth production.
[0052] The structure design and the description of the drawings Figures 1 to 5 As shown in the figure, the opening process and principle of the multi-slot product A injection mold are as follows:
[0053] Step one: pre-opening mold;
[0054] The upper mold plate 120 and the lower mold plate 230 are displaced away from the top plate 110, at this time, the top plate 110 drives the insert 130 to be extracted from the mold core to displace, thereby completing the pre-opening mold movement, the extracted insert 130 can effectively reduce the holding force of the upper mold plate 120, thereby providing a prerequisite for the product A demolding.
[0055] It should be noted that: in this pre-opening mold step, the insert 130 only needs to be extracted from the mold core, at this time the forming end of the insert 130 is placed in the upper mold plate 120, because the forming end is needle-shaped, thereby greatly reducing the holding force.
[0056] Step two: opening mold;
[0057] The lower mold plate 230 is displaced away from the upper mold plate 120, thereby completing the opening mold movement. Specifically: the lower mold plate 230 drives the lower mold core 320 to drive the core pulling mechanism to displace away from the upper mold plate 120 to open the mold, realizing the separation of the upper mold core 310 and the product A, because the pre-opening mold movement is completed, thereby the upper mold core 310 can effectively and conveniently move away from the product A, and also avoid the problem of product A being pulled and injured due to the influence of the holding force.
[0058] It should be noted that: at the moment when the upper mold plate 120 and the lower mold plate 230 are separated to perform the opening mold movement, the core block 440 is stably positioned in the lower mold core due to the cooperation of the two wing protrusions of the core block 440 and the sliding groove, thereby avoiding the product A being pulled and injured due to the opening mold movement.
[0059] Step three: core pulling;
[0060] The core pulling oil cylinder 410 drives the core pulling connecting shaft to drive the sliding block and the core block 440 to synchronously displace for core pulling, thereby extracting the core block 440 from the product A to form.
[0061] Step four: ejection;
[0062] The ejector plate group 241 is driven to displace in the direction of the lower mold plate 230, the ejector pin 242 passes through the lower mold plate 230, the lower mold core 320 and the formed product A to contact, thereby ejecting the product A from the lower mold core 320 to demold, completing the product A demolding.
[0063] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. An injection mold for multi-slot products, comprising a mold frame, a mold core, and a core-pulling mechanism, wherein the mold core and the core-pulling mechanism are mounted within the mold frame, characterized in that: The mold frame includes an upper mold assembly and a lower mold assembly, and 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, wherein: The upper module includes a top plate, an upper template, and inserts. The top plate is set close to the upper template, and the inserts are fixedly connected to the top plate through insert fixing plates so as to move synchronously with the top plate to complete the pre-opening mold movement. The lower mold core is slidably mounted with a core block, which is driven by a core-pulling mechanism to perform core-pulling displacement. The core block has an I-shaped cross-section, and a core insert is provided on the side away from the core pulling mechanism. The core insert is inserted and positioned with the lower mold core.
2. The injection mold for multi-slot products according to claim 1, characterized in that: The lower mold core is provided with a sliding groove, and the core block is slidably installed in the sliding groove.
3. The injection mold for multi-slot products according to claim 1, characterized in that: The core block has protrusions on both wings on the side away from the upper module. The protrusions on both wings are symmetrically distributed and engage with the lower mold core to position the core block at the moment of mold opening.
4. The injection mold for multi-slot products according to claim 1, characterized in that: The core insert is placed at one end of the core block and on the side away from the upper module.
5. The injection mold for multi-slot products according to claim 1, characterized in that: The lower mold core is provided with an insertion hole; After the core-pulling movement is completed and the core is reset, the core insert is inserted into the insertion hole to position the core.
6. The injection mold for multi-slot products according to claim 1, characterized in that: The top plate has a groove on the side facing the upper template, and the insert fixing plate is fixed in the groove; The insert passes through the upper template and the upper mold core, extending into the product forming cavity inside the mold core.
7. The injection mold for multi-slot products according to claim 1, characterized in that: The insert is columnar, with the end furthest from the insert fixing plate being a shaped end, which is needle-shaped.
8. The injection mold for multi-slot products according to claim 1, characterized in that: The lower module includes an ejection mechanism, which includes an ejection plate assembly and ejector pins. The ejector pin is fixedly connected to the ejector plate assembly and is driven by the ejector plate assembly to perform ejection operations in the direction of the upward module. The ejector pin passes through the lower mold core and extends into the molding cavity of the mold core.
9. The injection mold for multi-slot products according to claim 1, characterized in that: The core-pulling mechanism includes a core-pulling cylinder, a cylinder connecting shaft, and a slider connected in sequence. The slider core is connected and driven by the slider to perform a core-pulling movement away from the mold core.