Rotary core-pulling mechanism of water pipe rack lifting handle injection mold
By vertically setting gears and arc-shaped core pulling structures in the injection mold, the problem of low production efficiency of traditional molds is solved, and efficient production of multiple arc-shaped water pipe holders is achieved at the same time.
Patent Information
- Application Number
- CN202420261796.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-02-02
AI Technical Summary
When traditional injection molds make arc-shaped water pipe holders, due to the horizontal setting of gears, gears can only be set at four corners of the mold, which limits the production efficiency of the mold and cannot manufacture multiple products at the same time.
By vertically setting the driving gear and driven gear side by side in the mold, and connecting it through the rotating shaft, combining the arc-shaped core pulling rod, arc-shaped connecting rod and arc-shaped rack, the vertical setting of the water pipe frame handle is realized, and the mold width is increased. Distribute multiple sets of rotary core extraction structures.
It is achieved to improve the production efficiency of injection molds without adding complex structures, and to manufacture multiple water pipe holders at the same time, improving the smoothness of mold release and production efficiency.
Smart Images
Figure CN222201506U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an injection mold, in particular to a rotary core-pulling mechanism of an injection mold for a water pipe rack handle. Background Art
[0002] When using an injection mold to manufacture plastic products, if the plastic product to be manufactured is an arc-shaped water pipe rack handle, an arc-shaped inner hole is made in the water pipe rack handle, and the length of the arc-shaped inner hole is relatively long, the traditional method is usually to horizontally set the arc-shaped water pipe rack handle in the mold cavity of the injection mold, and a gear is horizontally set on the movable mold plate, and a rotating core pulling rod is horizontally set on the gear. A cylinder is set on one side of the movable mold plate, and the piston rod of the cylinder is connected to the rack, and the rack is meshed with the horizontally set gear. After the mold is opened, the rack is driven to move by the cylinder, and the rack drives the horizontally set gear to rotate, and the gear drives the rotating core pulling rod to pull out the inner hole of the water pipe rack handle. However, the disadvantage of this structure is that since the gear is set horizontally, gears can only be set at the four corners of the mold, and a pair of molds can only manufacture one product at a time, resulting in low production efficiency. Summary of the invention
[0003] The utility model aims to overcome the shortcomings of the prior art and provide a rotary core-pulling mechanism for a water pipe rack handle injection mold, which improves the production efficiency of the mold, has a simple structure and is easy to demould.
[0004] The technical scheme of the rotary core-pulling mechanism of the injection mold of the water pipe rack handle of the utility model is as follows: it comprises an upper double plate and a lower double plate, an upper pad is arranged under the upper double plate, a flow channel plate is arranged in the upper pad, a fixed mold plate is arranged under the upper pad, a mold foot is arranged on the lower double plate, an ejection device is arranged on the lower double plate between the mold feet, a movable mold plate is arranged on the mold foot, a mold cavity is formed between the movable mold plate and the fixed mold plate, a water pipe rack handle is injection molded in the mold cavity, an arc-shaped inner hole is formed in the water pipe rack handle, mounting columns are formed on both sides of the water pipe rack handle, mounting holes are formed in the mounting columns, left and right mold plates are arranged on the movable mold plate Two groups of symmetrical arc-shaped core-pulling rods, one end of which matches the inner hole of the handle of the water pipe rack, and the other end of which is connected to the arc-shaped connecting rod. The side wall of the arc-shaped connecting rod is provided with an arc-shaped rack. A gear groove is opened in the mold foot. A driving gear, a driven gear and a rotating shaft are arranged in the gear groove. The driving gear and the driven gear are arranged vertically. The driving gear and the driven gear are respectively fixedly connected to the rotating shaft. The driven gear is meshed with the arc-shaped rack. A first oil cylinder is arranged on the side wall of the mold foot. The piston rod of the first oil cylinder is connected to a spur rack, and the spur rack is meshed with the driving gear.
[0005] Furthermore, a side core pulling slider is provided on the movable template, one end of which is connected to a side core pulling rod, which cooperates with the mounting hole in the mounting column, and a second oil cylinder is provided on the side wall of the movable template, and the piston rod of the second oil cylinder is connected to the side core pulling slider.
[0006] Furthermore, the ejection device includes an upper ejector plate and a lower ejector plate arranged on the lower composite plate, the upper and lower ejector plates are driven by power, ejectors are arranged on the upper and lower ejector plates, and the ejectors pass through the movable template and cooperate with the handle of the water pipe rack.
[0007] Furthermore, an arc-shaped protruding guide rib is formed under the arc-shaped connecting rod, and an arc-shaped guide groove is formed on the movable template, and the guide rib cooperates with the guide groove.
[0008] The beneficial effect of the rotary core-pulling mechanism of the water pipe rack handle injection mold of the utility model is that the driving gear and the driven gear are vertically arranged side by side in the gear groove of the mold foot and connected by a rotating shaft, and the corresponding arc-shaped core-pulling rod, arc-shaped connecting rod, arc-shaped rack, and water pipe rack handle are all vertically arranged, so that only the width of the mold needs to be increased, and multiple groups of rotary core-pulling structures can be distributed and arranged side by side, so that the injection mold can simultaneously inject multiple water pipe rack handles, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a side view schematic diagram of the rotary core pulling mechanism of the injection mold of the water pipe rack handle of the utility model;
[0010] Figure 2 yes Figure 1 A-A direction cross-sectional diagram;
[0011] Figure 3 yes Figure 1 Schematic diagram of the cross section in the B-B direction;
[0012] Figure 4 yes Figure 1 Schematic diagram of the C-C direction cross section;
[0013] Figure 5 It is a three-dimensional schematic diagram of the moving template;
[0014] Figure 6 It is a three-dimensional schematic diagram of the matching state of the arc-shaped core-pulling rod, the arc-shaped connecting rod and the arc-shaped rack;
[0015] Figure 7 It is a three-dimensional schematic diagram of a side core pulling rod arranged in a side core pulling slider;
[0016] Figure 8 It is a three-dimensional schematic diagram of the handle of the water pipe rack;
[0017] Fig. 9 It is a structural schematic diagram of a water pipe rack handle. DETAILED DESCRIPTION
[0018] The utility model relates to a rotary core-pulling mechanism for an injection mold of a water pipe rack handle. Figure 1 — Fig. 9As shown, it includes an upper composite plate 1 and a lower composite plate 2, an upper pad 3 is arranged under the upper composite plate 1, a flow channel plate 4 is arranged in the upper pad 3, a fixed mold plate 5 is arranged under the upper pad 3, a mold foot 6 is arranged on the lower composite plate 2, an ejection device is arranged on the lower composite plate 2 between the mold feet 6, a movable mold plate 7 is arranged on the mold foot 6, a mold cavity is formed between the movable mold plate 7 and the fixed mold plate 5, a water pipe rack handle 8 is injection-molded in the mold cavity, an arc-shaped inner hole 9 is formed in the water pipe rack handle 8, mounting columns 10 are formed on both sides of the water pipe rack handle 8, and mounting holes 11 are formed in the mounting columns 10, and two groups of symmetrical arc-shaped core pulling rods 12 are arranged on the movable mold plate 7, and one end of the arc-shaped core pulling rod 12 Cooperating with the inner hole 9 of the handle 8 of the water pipe rack, the other end of the arc-shaped core-pulling rod 12 is connected to the arc-shaped connecting rod 13, and the side wall of the arc-shaped connecting rod 13 is provided with an arc-shaped rack 14. A gear groove 15 is opened in the mold foot 6, and a driving gear 16, a driven gear 17 and a rotating shaft 30 are arranged in the gear groove 15. The driving gear 16 and the driven gear 17 are arranged upright, and the driving gear 16 and the driven gear 17 are respectively fixedly connected to the rotating shaft, and the driven gear 17 is meshed with the arc-shaped rack 14. A first oil cylinder 18 is arranged on the side wall of the mold foot 6, and the piston rod of the first oil cylinder 18 is connected to a spur rack 19, and the spur rack 19 is meshed with the driving gear 16.
[0019] Furthermore, a side core pulling slider 20 is provided on the movable template 7, one end of the side core pulling slider 20 is connected to a side core pulling rod 21, the side core pulling rod 21 cooperates with the mounting hole 11 in the mounting column 10, and a second oil cylinder 22 is provided on the side wall of the movable template 7, and the piston rod of the second oil cylinder is connected to the side core pulling slider 20.
[0020] Furthermore, the ejection device includes an upper ejector plate 23 and a lower ejector plate 24 arranged on the lower composite plate 2. The upper and lower ejector plates 23 and 24 are driven by power, and ejectors 25 are arranged on the upper and lower ejector plates. The ejector 25 passes through the movable template 7 and cooperates with the water pipe rack handle 8.
[0021] Furthermore, an arc-shaped protruding guide rib 26 is formed under the arc-shaped connecting rod 13, and an arc-shaped guide groove 27 is formed on the movable template 7, and the guide rib 26 cooperates with the guide groove 27. With the guide rib 26 and the guide groove 27, the core pulling and reset actions of the arc-shaped connecting rod 13, the arc-shaped core pulling rod 12 and the arc-shaped rack 14 can be guided, making their actions more precise.
[0022] The utility model discloses a rotary core-pulling mechanism of an injection mold for a water pipe rack handle. After the water pipe rack handle 8 is injection molded, the power in the injection molding machine drives the lower composite plate 2, the mold foot 6, the upper ejector plate 23, the lower ejector plate 24, the ejector 25, the movable mold plate 7, the water pipe rack handle 8, the arc core-pulling rod 12, the arc connecting rod 13, the arc rack 14, the driving gear 16, the driven gear 17, the rotating shaft 30, the first oil cylinder 18, the spur rack 19, the side core-pulling slider 20, the side core-pulling rod 21, and the second oil cylinder 22 to move downward together, while the upper composite plate 1, the upper pad plate 3, the flow channel plate 4, and the fixed mold plate 5 remain stationary, so that the mold is gradually opened from the fixed mold plate 5 and the movable mold plate 7, and then the piston rod of the second oil cylinder 22 drives the side core-pulling slider 20 to move outward, and the side core-pulling slider 20 drives the side core-pulling rod 21 to pull out the installation column of the water pipe rack handle 8 outward. 10 and the mounting hole 11, and then the piston rod of the first oil cylinder 18 drives the spur rack 19 to move, the spur rack 19 drives the vertical driving gear 16 to rotate, the driving gear 16 drives multiple vertical driven gears 17 to rotate synchronously through the rotating shaft 30, the driven gear 17 drives the arc rack 14 to move outward, the arc rack 14 drives the arc connecting rod 13 to move outward, the arc connecting rod 13 moves outward in an arc shape along the guide groove 27 through the guide slide rib 26, the arc connecting rod 13 drives the arc core pulling rod 12 to pull out half of the arc inner hole 9 of the water pipe rack handle 8, and another group of symmetrical arc core pulling rods 12 pull out the other half of the arc inner hole 9 of the water pipe rack handle 8 in the opposite direction, and finally the upper and lower ejector plates 23, 24 and the ejector 25 are driven by power to move upward, and the ejector 25 ejects the completed core pulling water pipe rack handle 8 upward and demoulds it. The rotary core-pulling mechanism of the water pipe rack handle injection mold of the present scheme is achieved by vertically arranging the driving gear 16 and the driven gear 17 side by side in the gear groove 15 of the mold foot 6, and connecting them through the rotating shaft 30. The corresponding arc-shaped core-pulling rod 12, arc-shaped connecting rod 13, arc-shaped rack 14, and water pipe rack handle 8 are all vertically arranged. In this way, only the width of the mold needs to be increased, and multiple sets of rotary core-pulling structures can be distributed and arranged side by side, so that the injection mold can simultaneously inject multiple water pipe rack handles 8, thereby improving production efficiency.
Claims
1. A rotary core-pulling mechanism for an injection mold for a handle of a water pipe rack, comprising an upper composite plate (1) and a lower composite plate (2), wherein an upper pad plate (3) is arranged under the upper composite plate (1), a flow channel plate (4) is arranged in the upper pad plate (3), a fixed mold plate (5) is arranged under the upper pad plate (3), a mold foot (6) is arranged on the lower composite plate (2), an ejection device is arranged on the lower composite plate (2) between the mold feet (6), a movable mold plate (7) is arranged on the mold foot (6), a mold cavity is formed between the movable mold plate (7) and the fixed mold plate (5), a water pipe rack handle (8) is injection molded in the mold cavity, an arc-shaped inner hole (9) is formed in the water pipe rack handle (8), mounting columns (10) are formed on both sides of the water pipe rack handle (8), and mounting holes (11) are formed in the mounting columns (10), Features: The movable die plate (7) is provided with two groups of symmetrical arc-shaped core-pulling rods (12) on the left and right, one end of the arc-shaped core-pulling rod (12) is matched with the inner hole (9) of the water pipe rack handle (8), the other end of the arc-shaped core-pulling rod (12) is connected to the arc-shaped connecting rod (13), the side wall of the arc-shaped connecting rod (13) is provided with an arc-shaped rack (14), a gear groove (15) is opened in the die foot (6), and a driving gear (16) and a driven gear (14) are provided in the gear groove (15). The gear (17) and the rotating shaft (30), the driving gear (16) and the driven gear (17) are arranged vertically, the driving gear (16) and the driven gear (17) are respectively fixedly connected to the rotating shaft, the driven gear (17) is meshed with the arc-shaped rack (14), a first oil cylinder (18) is arranged on the side wall of the mold foot (6), the piston rod of the first oil cylinder (18) is connected to the spur rack (19), and the spur rack (19) is meshed with the driving gear (16).
2. The rotary core-pulling mechanism of the water pipe rack handle injection mold according to claim 1, Features: A side core pulling slider (20) is arranged on the movable platen (7), a side core pulling rod (21) is arranged in the side core pulling slider (20), the side core pulling rod (21) cooperates with the mounting hole (11) in the mounting column (10), a second oil cylinder (22) is arranged on the side wall of the movable platen (7), and a piston rod of the second oil cylinder is connected to the side core pulling slider (20).
3. The rotary core-pulling mechanism of the water pipe rack handle injection mold according to claim 1, Features: The ejection device comprises an upper ejector plate (23) and a lower ejector plate (24) arranged on the lower composite plate (2); the upper and lower ejector plates (23, 24) are driven by power; ejectors (25) are arranged on the upper and lower ejector plates; the ejector pins (25) pass through the movable template (7) and cooperate with the water pipe rack handle (8).
4. The rotary core-pulling mechanism of the water pipe rack handle injection mold according to claim 1, Features: An arc-shaped protruding guide rib (26) is formed under the arc-shaped connecting rod (13), and an arc-shaped guide groove (27) is formed on the movable template (7), and the guide rib (26) and the guide groove (27) are matched.