Injection mold structure with vertical multi-channel venting system

Abstract

This utility model discloses an injection mold structure with a vertical multi-channel venting system, relating to the field of injection mold processing technology. The utility model includes a lower mold and an upper mold. The lower mold has a molding cavity inside, and an ejector plate is installed below it. The lower mold also has a venting mechanism inside, used to adjust different venting methods according to different materials of the injection molded parts. A positioning mechanism is provided above the venting mechanism for resetting and fixing it. The venting mechanism includes two placement slots inside the molding cavity. A turntable is movably installed inside each placement slot. Multiple first vent holes are opened on the lower surface of the inner wall of the placement slot, and multiple sets of second vent holes are opened on the outer side of the turntable. This application, through its venting mechanism, enables injection molded parts of different materials to use different numbers of vent holes, avoiding insufficient or excessive venting and improving the molding quality of the injection molded parts from the source.

Description

Technical Field

[0001] This utility model relates to the field of injection mold processing technology, specifically to an injection mold structure with a vertical multi-channel venting system. Background Technology

[0002] Injection molds are specialized tools used in plastic injection molding processes. They are used to inject heated and molten plastic into the mold cavity, which then cools and solidifies to obtain plastic products of a specific shape.

[0003] Publication number "CN220095403U" relates to the field of injection mold technology, specifically an injection mold venting system, including a worktable and a lower injection mold. The surface of the worktable is fixedly connected to the outer wall of the lower injection mold, the lower injection mold is fitted to the outer wall of the upper injection mold, the interior of the upper injection mold is fixedly connected to the outer wall of the injection tube, and the outer wall of the upper injection mold is fixedly connected to the end of a handle. The venting system uses a handle to rotate a fastening stud, which in turn causes a threaded block to slide in a sliding column. The threaded block moves a horizontal column within the lower injection mold, which in turn moves a horizontal plate, which in turn moves a first vent. This allows the gas inside the injection mold to be released through the first vent and the vent pipe. During injection molding, no air bubbles form inside the molded product, and the injection quality is not affected.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] In existing technologies, the number of venting holes inside injection molds is basically unadjustable, which has obvious limitations in actual production scenarios. A fixed number of venting holes cannot meet diverse venting needs. Either insufficient venting holes lead to gas retention, forming bubbles and shrinkage cavities, or too many venting holes cause plastic melt to overflow, forming flash. Additional manpower is required to trim the flash, making it inconvenient to use. Utility Model Content

[0006] To address the problem that a fixed number of vent holes cannot meet diverse venting needs, the purpose of this invention is to provide an injection mold structure with a vertical multi-channel venting system.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: an injection mold structure with a vertical multi-channel venting system, including a lower mold and an upper mold, wherein a molding cavity is opened inside the lower mold, an ejector plate is installed below the lower mold, and an venting mechanism is provided inside the lower mold to adjust different venting methods according to different materials of injection molded parts. At the same time, a positioning mechanism is provided above the venting mechanism to reset and fix the venting mechanism.

[0008] The venting mechanism includes two placement slots inside the molding cavity. A turntable is movably installed inside the placement slot. Multiple first vent holes are opened on the lower surface of the inner wall of the placement slot. Multiple sets of second vent holes are opened on the outer side of the turntable. The number of the multiple sets of second vent holes is distributed in order from more to less. A rotating rod is rotatably inserted through the middle of the turntable. The rotating rod is rotatably installed inside the lower mold. A connecting ring is provided above the rotating rod. Symmetrically distributed movable rods are fixedly installed at the bottom end of the connecting ring. Symmetrically distributed slots are opened at the top of the rotating rod. The movable rods are movably engaged in the slots.

[0009] Preferably, the positioning mechanism includes a fixed rod fixedly connected to the rotating rod, a spring inside the fixed rod, a connecting plate connected to the top of the spring, an insert rod fixedly provided at the top of the connecting plate, the insert rod passing through the fixed rod, a reset plate at the top of the insert rod, the reset plate fitting against the connecting ring, and a ring-shaped set of locking rods fixedly installed at the top of the connecting ring. The lower mold has symmetrically distributed movable grooves inside, and a ring-shaped set of locking slots above the movable grooves, with the locking rods locked in the locking slots.

[0010] Preferably, the fixed rod has symmetrically distributed limiting grooves inside, and a limiting rod is locked inside the limiting groove. The limiting rod and the reset plate are fixedly connected.

[0011] Preferably, a fixing ring is fixedly installed at the top of the connecting ring, and a pressing block is provided inside the fixing ring.

[0012] Preferably, symmetrically distributed protective covers are fixedly installed on the outer side of the lower mold.

[0013] Preferably, an observation window is installed at the top of the protective cover, and the observation window is made of transparent material.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The exhaust mechanism in this application enables injection molded parts made of different materials to use different numbers of exhaust holes, avoiding problems of insufficient or excessive exhaust, and improving the molding quality of injection molded parts from the source;

[0016] 2. The positioning mechanism in this application enables the exhaust mechanism to lock itself, preventing the exhaust mechanism from shaking during use and causing the first and second exhaust holes to misalign. It is simple to operate and convenient for staff to use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the molding cavity in this utility model.

[0020] Figure 3 This is a schematic diagram of the exhaust mechanism in this utility model.

[0021] Figure 4 This is a schematic diagram of the positioning mechanism in this utility model.

[0022] In the diagram: 101, lower mold; 102, molding cavity; 103, upper mold; 104, ejector plate; 1, venting mechanism; 2, positioning mechanism; 11, placement groove; 12, turntable; 13, first vent hole; 14, second vent hole; 15, rotating rod; 16, connecting ring; 17, movable rod; 18, empty groove; 21, fixed rod; 22, spring; 23, connecting plate; 24, insertion rod; 25, reset plate; 26, locking rod; 27, movable groove; 271, locking groove; 31, limiting groove; 32, limiting rod; 41, fixed ring; 42, pressing block; 51, protective cover; 61, observation window. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-4 As shown, this utility model discloses an injection mold structure with a vertical multi-channel venting system, and provides the following two embodiments:

[0025] Example 1: An injection mold structure with a vertical multi-channel venting system includes a lower mold 101 and an upper mold 103. The lower mold 101 has a molding cavity 102 inside. An ejector plate 104 is installed below the lower mold 101. The lower mold 101 is provided with a venting mechanism 1, which is used to adjust different venting methods according to different materials of injection molded parts. At the same time, a positioning mechanism 2 is provided above the venting mechanism 1, which is used to reset and fix the venting mechanism 1.

[0026] The venting mechanism 1 includes two placement slots 11 inside the molding cavity 102. A turntable 12 is movably installed inside the placement slot 11. Multiple first vent holes 13 are opened on the lower surface of the inner wall of the placement slot 11. Multiple sets of second vent holes 14 are opened on the outer side of the turntable 12. The number of the multiple sets of second vent holes 14 is distributed from more to less. A rotating rod 15 is rotatably inserted through the middle of the turntable 12. The rotating rod 15 is rotatably installed inside the lower mold 101. A connecting ring 16 is provided above the rotating rod 15. A symmetrically distributed movable rod 17 is fixedly installed at the bottom end of the connecting ring 16. A symmetrically distributed empty slot 18 is opened at the top of the rotating rod 15. The movable rod 17 is movably locked in the empty slot 18.

[0027] Example 2 differs from Example 1 in that: the positioning mechanism 2 includes a fixed rod 21 fixedly connected to the rotating rod 15. A spring 22 is provided inside the fixed rod 21. A connecting plate 23 is connected to the top of the spring 22. An insert rod 24 is fixedly provided at the top of the connecting plate 23. The insert rod 24 passes through the fixed rod 21. A reset plate 25 is provided at the top of the insert rod 24. The reset plate 25 and the connecting ring 16 are in contact. A ring-shaped set of locking rods 26 is fixedly installed at the top of the connecting ring 16. A symmetrically distributed movable groove 27 is provided inside the lower mold 101. A ring-shaped set of locking grooves 271 is provided above the movable grooves 27. The locking rods 26 are locked in the locking grooves 271.

[0028] The fixed rod 21 has symmetrically distributed limiting grooves 31 inside, and a limiting rod 32 is locked inside the limiting groove 31. The limiting rod 32 is fixedly connected to the reset plate 25. By setting the limiting groove 31 and the limiting rod 32, the connecting ring 16 is prevented from driving the reset plate 25 to rotate when it rotates, and the spring 22 is prevented from breaking due to rotation, thus improving the service life of the spring 22.

[0029] A fixing ring 41 is fixedly installed at the top of the connecting ring 16. The fixing ring 41 has a pressing block 42 inside. By setting the fixing ring 41 and the pressing block 42, it is convenient for the staff to rotate the connecting ring 16.

[0030] A symmetrically distributed protective cover 51 is fixedly installed on the outer side of the lower mold 101. By setting the protective cover 51, dust on the surface of the turntable 12 is prevented from affecting the injection molded parts. An observation window 61 is installed at the top of the protective cover 51. The observation window 61 is made of transparent material, which allows the staff to observe the condition of the turntable 12 in real time.

[0031] Working principle: In actual use, the operator presses the pressing block 42, which drives the connecting ring 16 to descend through the fixing ring 41. The connecting ring 16 drives the movable rod 17 to descend, and at the same time, the locking rod 26 disengages from the slot 271. As the connecting ring 16 descends, it also drives the reset plate 25 to descend, so that the reset plate 25 compresses the spring 22 through the insert rod 24 and the connecting plate 23, causing it to deform. Then, the pressing block 42 is rotated, which drives the connecting ring 16 to rotate. The connecting ring 16 drives the rotating rod 15 to rotate through the movable rod 17. The rotating rod 15 drives the turntable 12 to rotate. When the second exhaust hole 14 and the first exhaust hole 13 on the outside of the turntable 12 coincide, the pressure on the pressing block 42 is stopped. At this time, the spring 22 releases its elastic force, which drives the connecting plate 23 to rise. The connecting plate 23 drives the connecting ring 16 and the locking rod 26 to rise through the insert rod 24 and the reset plate 25, until the locking rod 26 enters the slot 271, completing the fixation of the turntable 12.

[0032] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An injection mold structure with a vertical multi-channel venting system, comprising a lower mold (101) and an upper mold (103), characterized in that: The lower mold (101) has a molding cavity (102) inside. An ejector plate (104) is installed below the lower mold (101). The lower mold (101) has an exhaust mechanism (1) inside, which is used to adjust different exhaust methods according to different materials of injection molded parts. At the same time, a positioning mechanism (2) is provided above the exhaust mechanism (1), which is used to reset and fix the exhaust mechanism (1). The exhaust mechanism (1) includes two placement slots (11) inside the molding cavity (102). A turntable (12) is movably provided inside the placement slot (11). Multiple first exhaust holes (13) are provided on the lower surface of the inner wall of the placement slot (11). Multiple sets of second exhaust holes (14) are provided on the outer side of the turntable (12). The number of the multiple sets of second exhaust holes (14) is distributed in order from more to less. A rotating rod (15) is rotatably passed through the middle of the turntable (12). The rotating rod (15) is rotatably installed inside the lower mold (101). A connecting ring (16) is provided above the rotating rod (15). A symmetrically distributed movable rod (17) is fixedly installed at the bottom end of the connecting ring (16). A symmetrically distributed empty slot (18) is provided at the top of the rotating rod (15). The movable rod (17) is movably locked in the empty slot (18).

2. The injection mold structure with a vertical multi-channel venting system as described in claim 1, characterized in that, The positioning mechanism (2) includes a fixed rod (21) fixedly connected to the rotating rod (15). The fixed rod (21) has a spring (22) inside. The top of the spring (22) is connected to a connecting plate (23). The top of the connecting plate (23) is fixedly provided with a plug rod (24). The plug rod (24) passes through the fixed rod (21). The top of the plug rod (24) is provided with a reset plate (25). The reset plate (25) and the connecting ring (16) are in contact. The top of the connecting ring (16) is fixedly installed with a ring-shaped distribution of locking rods (26). The lower mold (101) has symmetrically distributed movable grooves (27) inside. The movable grooves (27) have a ring-shaped distribution of locking slots (271) above them. The locking rods (26) are locked in the locking slots (271).

3. The injection mold structure with a vertical multi-channel venting system as described in claim 2, characterized in that, The fixed rod (21) has symmetrically distributed limiting grooves (31) inside, and a limiting rod (32) is fixedly installed inside the limiting groove (31). The limiting rod (32) and the reset plate (25) are fixedly connected.

4. The injection mold structure with a vertical multi-channel venting system as described in claim 1, characterized in that, A fixing ring (41) is fixedly installed at the top of the connecting ring (16), and a pressing block (42) is provided inside the fixing ring (41).

5. The injection mold structure with a vertical multi-channel venting system as described in claim 1, characterized in that, The lower mold (101) is fixedly equipped with symmetrically distributed protective covers (51).

6. The injection mold structure with a vertical multi-channel venting system as described in claim 5, characterized in that, The top of the protective cover (51) is equipped with an observation window (61) made of transparent material.

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