Injection mold for handle
By introducing slots, protrusions, and rubber positioning grooves into the injection mold, the problem of inconvenient core replacement is solved, the yield and connection stability of injection molded products are improved, and the needs of diverse internal cavity shapes and sizes are met.
Patent Information
- Application Number
- CN202520004414.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-02
AI Technical Summary
Existing injection molds are inconvenient to change cores and cannot meet the diverse internal cavity shapes and sizes required by customers, resulting in a decrease in the yield of injection molded products.
An easy-to-install injection mold for handles was designed. By setting a groove and protrusion structure that matches the piston rod on the upper body, combined with a rubber lower body and positioning groove, a stable connection and shock absorption effect of the core are achieved. The connection stability between the core pulling mechanism and the cylinder is reinforced by a connecting rod.
It enables convenient replacement of the core, improves the yield of injection molded products, ensures that the core is not easily loosened during vibration, and enhances the stability of the connection structure and the quality of injection molded products.
Smart Images
Figure CN223720044U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of injection molds, in particular to an injection mold for a handle. BACKGROUND
[0002] The injection mold is a tool matched with a plastic forming machine in the plastic processing industry, which is used to give a plastic product a complete configuration and accurate size. The injection mold usually comprises a front mold and a back mold for installation on the injection machine. An operator controls the injection machine to realize mold closing or mold opening of the front mold and the back mold, so as to obtain a plastic product. When the product to be produced has an inner cavity, such as a handle with an inner cavity, an injection mold with a core-pulling mechanism needs to be used. The core in the core-pulling mechanism is used to form the inner cavity of the corresponding structure.
[0003] In reality, the shapes and sizes of the inner cavities required by customers are various, and therefore, an injection mold with a core convenient to replace is urgently needed. CONTENT OF THE UTILITY MODEL
[0004] The application provides an injection mold for a handle which is convenient to install.
[0005] The injection mold for a handle provided by the application adopts the following technical scheme:
[0006] The injection mold for a handle comprises a front mold frame and a back mold frame. The front mold frame and the back mold frame are arranged oppositely and are used to be installed on opposite sides of an injection machine. An end of the front mold frame facing the back mold frame is provided with a front mold core. The front mold core is formed with a front mold cavity. An end of the back mold frame facing the front mold frame is provided with a back mold core. The back mold core is formed with a back mold cavity. The back mold frame is connected with a core-pulling mechanism. The core-pulling mechanism comprises a fixing seat, a gas cylinder, a mounting seat and a core. The fixing seat is used to be installed on the top of the injection machine. The gas cylinder is installed on the fixing seat. A plurality of recesses are formed in the piston rod of the gas cylinder in the transverse direction. A clamping groove is formed in the mounting seat. A plurality of protrusions corresponding to the plurality of recesses are formed in the groove wall of the clamping groove in the transverse direction. The plurality of protrusions are embedded in the plurality of recesses one by one in the transverse direction. The core is inserted and fixed in the mounting seat and located in the back mold cavity.
[0007] Preferably, the mounting seat comprises an upper seat body and a lower seat body. The clamping groove is formed in the upper end of the upper seat body. The lower seat body is connected to the lower end of the upper seat body. A first positioning groove is formed in the lower end of the upper seat body. A second positioning groove is formed in the end of the lower seat body close to the upper seat body. The core comprises a core main body and a positioning end portion. The upper part of the positioning end portion is embedded in the first positioning groove, and the lower part of the positioning end portion is embedded in the second positioning groove. The core main body penetrates the lower seat body.
[0008] Preferably, the core pulling mechanism further comprises a connecting rod and two connecting posts, the two connecting posts are connected to the upper end of the upper seat body and are arranged on the two sides of the clamping groove, and the connecting rod is arranged in the two connecting posts and the piston rod of the cylinder.
[0009] Preferably, the fixing seat comprises a fixing seat body and two fixing rods, the fixing seat body is provided with a sliding groove penetrating from top to bottom, the two fixing rods are arranged on the two sides of the sliding groove and are connected to the rear mold frame, two guide grooves are formed between the sliding groove and the two fixing rods, and the fixing seat body is fixed to the rear mold frame through the two fixing rods; the upper seat body and the lower seat body are slidably connected in the sliding groove of the fixing seat body and are arranged in the guide grooves.
[0010] Preferably, the upper seat body is provided with a rounded corner at one end close to the front mold frame; the front mold frame is provided with a receiving groove corresponding to the upper seat body and the lower seat body, and the upper seat body and the lower seat body are arranged in the receiving groove.
[0011] In summary, the present application has at least one of the following beneficial technical effects:
[0012] 1. The present application is provided with a clamping groove matched with the piston rod on the upper seat body, and a protrusion matched with the recess on the piston rod is arranged in the clamping groove. Through lateral movement, the protrusion can be embedded in the recess, and during the process of driving the upper seat body up and down by the cylinder, the cooperation between the protrusion and the recess makes the upper seat body not easy to fall off from the piston rod, which not only facilitates installation, but also has a stable connection structure.
[0013] 2. The core is positioned and fixed by the first positioning groove of the upper seat body and the first positioning groove of the lower seat body, and the lower seat body made of rubber plays a role of shock absorption when being driven by the cylinder to abut against the front mold core and the rear mold core, so that the core is not easy to loosen due to vibration, thereby ensuring the yield of the injection molded product.
[0014] 3. The connecting rod is arranged in the piston rod and fixed to the two connecting posts, which further stabilizes the connection structure between the core pulling mechanism and the cylinder. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a schematic view of the overall structure of the preferred embodiment of the present application.
[0016] Figure 2 is a schematic view of the structure of the fixing seat in the preferred embodiment of the present application.
[0017] Figure 3 is a schematic view of the overall structure of the preferred embodiment of the present application from another perspective.
[0018] Figure 4 is Figure 3 is a sectional view along A-A.
[0019] Figure 5 is Figure 3 is a sectional view along B-B.
[0020] Figure 6 is a structural schematic view of the upper seat body in the preferred embodiment of the present application.
[0021] Figure 7 is a structural schematic view of the lower seat body in the preferred embodiment of the present application.
[0022] Figure 8 is a sectional view of the core in the preferred embodiment of the present application.
[0023] The figure mark explanation: 1, front mold frame; 11, front sealing plate; 12, front bottom plate; 13, accommodating groove; 2, rear mold frame; 21, rear sealing plate; 22, square iron; 23, rear bottom plate; 24, ejection mechanism; 3, front mold core; 31, front cavity; 4, rear mold core; 41, rear cavity; 5, fixed seat; 51, fixed seat body; 52, fixed rod; 53, sliding groove; 54, guide groove; 6, air cylinder; 61, piston rod; 611, recess; 62, cylinder barrel; 7, mounting seat; 71, clamping groove; 711, protrusion; 72, upper seat body; 721, first positioning groove; 722, air passage; 73, lower seat body; 731, second positioning groove; 8, core; 81, core main body; 82, positioning end; 9, connecting rod; 10, connecting column. DETAILED DESCRIPTION
[0024] The present application is further described in detail below with reference to the accompanying drawings.
[0025] The present application provides a handle injection mold, as shown in Figures 1 to 8 , comprising a front mold frame 1, a rear mold frame 2 and a core pulling mechanism (not marked in the figure).
[0026] As shown in Figures 1 to 5 , the front mold frame 1 and the rear mold frame 2 are oppositely arranged, the front mold frame 1 and the rear mold frame 2 are used for being installed on the opposite sides of an injection molding machine, one end of the front mold frame 1 towards the rear mold frame 2 is provided with a front mold core 3, the front mold core 3 is formed with a front cavity 31, one end of the rear mold frame 2 towards the front mold frame 1 is provided with a rear mold core 4, the rear mold core 4 is formed with a rear cavity 41, specifically, the front mold frame 1 comprises a front sealing plate 11 and a front bottom plate 12, the front bottom plate 12 is installed with the front mold core 3 on the side close to the rear mold frame 2, the front mold core 3 is formed with the front cavity 31 on the side close to the rear mold frame 2, the rear mold frame 2 comprises a rear sealing plate 21, a square iron 22 and a rear bottom plate 23 connected in sequence, the rear sealing plate 21 and the rear bottom plate 23 are installed with an ejection mechanism 24, the ejection mechanism 24 is a prior art and will not be described in detail here, the rear bottom plate 23 is installed with the rear mold core 4 on the side towards the front mold core 3, the rear mold core 4 is formed with the rear cavity 41 on the side towards the front cavity 31, the front cavity 31 and the rear cavity 41 are opposite.
[0027] As Figures 2 to 5 shown, the core-pulling mechanism comprises a fixed seat 5, a cylinder 6, a mounting seat 7 and a core 8, the fixed seat 5 is used for being mounted on the top of the injection molding machine, the cylinder 6 is mounted on the fixed seat 5, a plurality of recesses 611 are formed on the piston rod 61 of the cylinder 6 along the transverse direction, a clamping groove 71 is formed on the mounting seat 7, a plurality of protrusions 711 corresponding to the plurality of recesses 611 are formed on the groove wall of the clamping groove 71 along the transverse direction, and the plurality of protrusions 711 are embedded in the plurality of recesses 611 one by one, the core 8 is inserted and fixed in the mounting seat 7 and located in the rear cavity 41.
[0028] The fixed seat 5 comprises a fixed seat body 51 and two fixed rods 52, the fixed seat body 51 is used for being mounted on the top of the injection molding machine, the fixed seat body 51 is provided with a sliding groove 53 penetrating the fixed seat 5 from top to bottom, the two fixed rods 52 are arranged on both sides of the sliding groove 53 and extend to the rear bottom plate 23 and abut on the rear mold core 4, the two fixed rods 52 and the sliding groove 53 form two guide grooves 54, and the two fixed rods 52 are fixed on the fixed seat body 51 and the rear bottom plate 23 by screws, the fixed seat body 51 contacts the upper end of the rear bottom plate 23 and is connected to the rear bottom plate 23 by the two fixed rods 52; the cylinder 6 comprises a piston rod 61 and a cylinder barrel 62, the cylinder barrel 62 is mounted on the upper end of the fixed seat body 51, the piston rod 61 is located in the sliding groove 53, and two recesses 611 are formed at the end of the piston rod 61. Figure 6 and Figure 7 The mounting seat 7 comprises an upper seat body 72 and a lower seat body 73, the upper end of the upper seat body 72 is provided with the clamping groove 71, the groove wall of the clamping groove 71 is provided with two protrusions 711 corresponding to the two recesses 611, the two protrusions 711 are embedded in the two recesses 611 one by one, the lower seat body 73 is fixedly connected to the lower end of the upper seat body 72 by screws, the lower seat body 73 is made of rubber, the upper seat body 72 and the lower seat body 73 are slidably connected in the sliding groove 53 by the cylinder 6 and inserted in the guide groove 54, the lower end of the upper seat body 72 is provided with a first positioning groove 721, and the end of the lower seat body 73 close to the upper seat body 72 is provided with a second positioning groove 731. Figure 8As shown, the core 8 includes a core body 81 and a positioning end 82, the upper part of the positioning end 82 is embedded in the first positioning groove 721 and fixed on the upper seat body 72 by a screw, the lower part is embedded in the second positioning groove 731, the core body 81 penetrates the lower seat body 73 and is embedded in the rear mold core 4, the core body 81 is a hollow structure, the upper seat body 72 is provided with an air passage 722, the air passage 722 includes three openings, two of which are arranged on both sides of the upper seat body 72, and the other opening is coaxially arranged with the first positioning groove 721 and communicates with the inside of the core body 81, and the end of the upper seat body 72 close to the front mold frame 1 is formed with a rounded corner; the front mold frame 1 is provided with a containing groove 13 corresponding to the upper seat body 72 and the lower seat body 73, and the upper seat body 72 and the lower seat body 73 are embedded in the containing groove 13, specifically, the containing groove 13 is located on the front bottom plate 12.
[0029] The core pulling mechanism further includes a connecting rod 9 and two connecting columns 10, the two connecting columns 10 are connected to the upper end of the upper seat body 72 and are arranged on both sides of the clamping groove 71, and the connecting rod 9 is embedded in the piston rod 61 of the air cylinder 6.
[0030] The handle injection mold provided by the application, during the replacement of the core 8, the operator operates the injection molding machine to separate the front mold frame 1 and the rear mold frame 2 to form enough space to replace the core 8, first, the connecting rod 9 is taken out, then the upper seat body 72, the lower seat body 73 and the core 8 are taken out together along the transverse direction, so that the entire core pulling mechanism is separated from the air cylinder 6 and the fixing seat 5, then the lower seat body 73 and the core 8 are sequentially separated from the upper seat body 72, then the new core 8 and the lower seat body 73 are installed into the upper seat body 72, the assembled upper seat body 72, lower seat body 73 and core 8 are moved along the transverse direction to the fixing seat 5, the protrusions 711 in the clamping groove 71 are embedded in the recesses 611 on the piston rod 61 along the transverse direction, and finally the connecting rod 9 is embedded into the two connecting columns 10 and the piston rod 61 and is fixed by a screw, that is, the replacement of the core 8 is completed, and in specific use, the core 8 is driven by the air cylinder 6 to be pulled by the piston rod 61 to abut against or away from the front mold core 3 and the rear mold core 4.
[0031] The handle injection mold of the application, the upper seat body 72 is provided with a clamping groove 71 matched with the piston rod 61, and a protrusion 711 matched with the upper recess 611 of the piston rod 61 is arranged in the clamping groove 71. Through transverse movement, the protrusion 711 can be embedded with the recess 611, and in the process of driving the upper seat body 72 to move up and down by the cylinder 6, the cooperation of the protrusion 711 and the recess 611 makes the upper seat body 72 not easy to fall off from the piston rod 61 in the moving process, which not only facilitates the installation, but also has a stable connection structure. The first positioning groove 721 of the upper seat body 72 and the first positioning groove 721 of the lower seat body 73 position and fix the core 8. The lower seat body 73 made of rubber material plays a shock absorption role when being driven by the cylinder 6 to abut against the front mold core 3 and the rear mold core 4, so that the core 8 is not easy to loosen due to vibration, ensuring the yield of the injection molded product. The connecting rod 9 penetrates through the piston rod 61 and is fixed on the two connecting columns 10, further reinforcing the stability of the connection structure between the core pulling mechanism and the cylinder 6.
[0032] The above are preferred embodiments of the application, not to limit the protection scope of the application, therefore: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.
Claims
1. A handle injection mold, characterized in that: comprising a front mold frame (1) and a rear mold frame (2), the front mold frame (1) and the rear mold frame (2) are arranged opposite to each other and are used to be installed on opposite sides of an injection molding machine, one end of the front mold frame (1) towards the rear mold frame (2) is provided with a front mold core (3), the front mold core (3) is formed with a front cavity (31), one end of the rear mold frame (2) towards the front mold frame (1) is provided with a rear mold core (4), the rear mold core (4) is formed with a rear cavity (41); the rear mold frame (2) is connected with a core pulling mechanism, the core pulling mechanism comprises a fixed seat (5), a gas cylinder (6), a mounting seat (7) and a core (8), the fixed seat (5) is used to be installed on the top of the injection molding machine, the gas cylinder (6) is installed on the fixed seat (5), a plurality of recesses (611) are formed on the piston rod (61) of the gas cylinder (6) in the transverse direction, a clamping groove (71) is formed on the mounting seat (7), a plurality of protrusions (711) corresponding to the plurality of recesses (611) are formed on the groove wall of the clamping groove (71) in the transverse direction, a plurality of the protrusions (711) are embedded in the plurality of recesses (611) one by one in the transverse direction, and the core (8) is penetrated and fixed in the mounting seat (7) and located in the rear cavity (41).
2. The handle injection mold of claim 1, characterized in that: the mounting seat (7) comprises an upper seat body (72) and a lower seat body (73), the clamping groove (71) is formed at the upper end of the upper seat body (72), the lower seat body (73) is connected to the lower end of the upper seat body (72), the lower end of the upper seat body (72) is provided with a first positioning groove (721), and the end of the lower seat body (73) close to the upper seat body (72) is provided with a second positioning groove (731).
3. The handle injection mold of claim 2, characterized in that: the core pulling mechanism further comprises a connecting rod (9) and two connecting columns (10), the two connecting columns (10) are connected to the upper end of the upper seat body (72) and are arranged on both sides of the clamping groove (71), and the connecting rod (9) is penetrated in the two connecting columns (10) and the piston rod (61) of the gas cylinder (6).
4. The handle injection mold of claim 2, characterized in that: The fixed seat (5) comprises a fixed seat body (51) and two fixed rods (52), the fixed seat body (51) is provided with a sliding groove (53) penetrating from top to bottom in the fixed seat (5), the two fixed rods (52) are arranged on the two sides of the sliding groove (53) and are connected to the rear mold frame (2), and two guide grooves (54) are formed between the fixed seat body (51) and the sliding groove (53), and the fixed seat body (51) is fixed on the rear mold frame (2) through the two fixed rods (52); The upper seat body (72) and the lower seat body (73) are connected in the sliding groove (53) through the air cylinder (6) and are arranged in the guide groove (54).
5. The handle injection mold according to claim 2, wherein: The upper seat body (72) is formed with a rounded corner at one end close to the front mold frame (1); The front mold frame (1) is provided with a containing groove (13) corresponding to the upper seat body (72) and the lower seat body (73), and the upper seat body (72) and the lower seat body (73) are embedded in the containing groove (13).