Hydraulic ejection structure of plastic mold
By designing a hydraulic ejection structure, which uses a cam and a pressing rod to lift and move the mold plate, and combining it with water spraying from the nozzle for cooling and brush cleaning, the problem of burns caused by high temperatures in plastic molded products is solved, and safe automatic unloading and nozzle cleaning are achieved.
Patent Information
- Application Number
- CN202422899481.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing hydraulic ejection structures for plastic molds result in high temperatures in the molded products after separation, which can easily burn operators.
Design a hydraulic ejection structure that uses the cooperation of a cam and a pressing rod to lift and translate the mold plate, and uses a suction cup to pick up the finished product. Then, the nozzle sprays water to cool it down, and at the same time, a brush cleans the nozzle to prevent clogging.
It enables automatic unloading of molded products, avoids burns to operators, keeps the nozzles clean, and improves the safety and reliability of plastic molds.
Smart Images
Figure CN223478243U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic mold technology, and specifically to a hydraulic ejection structure for a plastic mold. Background Technology
[0002] Plastic molds are a type of combined mold used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. The coordinated changes of the mold's punch, die, and auxiliary molding system can produce a series of plastic parts of different shapes and sizes. Plastic molds are the mother of industry, and the release of new products involves plastics. After completing the injection molding operation, the plastic mold needs to separate the product from the fixed mold through an ejection mechanism.
[0003] Currently, the hydraulic ejection structure of existing plastic molds can cause burns to the product even after it has cooled and solidified, despite the product being separated from the mold.
[0004] Therefore, it is particularly important to improve the existing hydraulic ejection structure of plastic molds by designing a new type of hydraulic ejection structure for plastic molds to solve the above-mentioned technical defects and improve the practicality of the overall hydraulic ejection structure of plastic molds. This is achieved through an overall design where the cam applies pressure to the extrusion rod, and then the mold plate is pushed upward and moves horizontally towards the inclined groove. The stop rod will block the flow and complete the unloading. Utility Model Content
[0005] The purpose of this invention is to provide a hydraulic ejection structure for plastic molds to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A hydraulic ejection structure for a plastic mold includes an injection molding machine body. A worktable is fixedly connected inside the injection molding machine body. A receiving groove is formed inside the worktable. A placement groove is formed inside the receiving groove. The receiving groove and the placement groove are interconnected. A mold plate is slidably connected inside the receiving groove. The receiving groove has an inclined surface design. An inclined groove is formed on the top of the worktable. An installation plate is fixedly connected inside the placement groove. A vertical plate is fixedly connected to the top of the installation plate. A track is fixedly connected to the outside of the vertical plate.
[0008] As a preferred embodiment of this utility model, a movable plate is slidably connected to the outside of the track, the movable plate has a vertical groove, and a lifting plate is slidably connected to the inside of the vertical groove.
[0009] As a preferred embodiment of this utility model, a support rod is fixedly connected to the outside of the lifting plate, the support rod extends into the inside of the mold plate and is slidably connected to the mold plate, a first extrusion rod is fixedly connected to the outside of the moving plate, and a first contact wheel is rotatably connected to the inside of the first extrusion rod.
[0010] As a preferred embodiment of this utility model, a swing rod is rotatably connected to the bottom end of the upright plate, a second pressing rod is fixedly connected to the right end of the swing rod and located below the lifting plate, and a third pressing rod is fixedly connected to the left end of the swing rod.
[0011] As a preferred embodiment of this utility model, the mounting plate is rotatably connected to a rotating shaft, the top of the rotating shaft is fixedly connected to a first gear, a gear plate is meshed with the first gear on the outside of the first gear and on the back of the upright plate, and an insert shaft is fixedly connected inside the gear plate.
[0012] As a preferred embodiment of this utility model, the insert shaft is fixedly connected to the outside of a first cam and a second cam, respectively, and the insert shaft extends to the eccentric part of the first cam and the second cam.
[0013] As a preferred embodiment of this utility model, a stop bar and a drive block are fixedly connected to the outer side of the workbench, a bellows is fixedly connected to the top of the drive block, a nozzle is fixedly connected to the output end of the bellows, a ring is fixedly connected to the outside of the nozzle, and a slider is slidably connected to the outside of the ring.
[0014] In a preferred embodiment of this utility model, the slider is externally fixedly connected to a bracket, which consists of two sets of brackets. A connecting shaft rotatably connects the two sets of brackets, and a connecting plate is fixedly connected to the end of the bracket away from the slider.
[0015] In a preferred embodiment of this utility model, a brush is rotatably connected to the outside of the connecting plate, a second gear is fixedly connected to the outside of the brush, and a rack is meshed with the outside of the second gear.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. In this utility model, the eccentric parts of the first and second cams contact the first and third extrusion rods, thereby enabling the support rod to lift the mold plate to the outside of the receiving groove. Subsequently, the first extrusion rod pushes the moving plate, causing the mold plate to move horizontally. After the mold plate moves horizontally, it contacts the stop rod, and at the same time, the suction cup on the stop rod generates an adsorption force with the finished product. Water is sprayed through the nozzle to cool it down. Finally, the mold plate is controlled to reset, and the finished product is in a suspended state. Gravity causes it to fall into the interior of the inclined groove, completing the automatic unloading.
[0018] 2. In this utility model, by moving the slider, the bracket is moved to the front of the nozzle. When the connecting shaft rotates, the brush can swing freely, making it easy for the brush to enter the interior of the nozzle. By pulling the rack and engaging it with the second gear, the brush rotates to clean the dirt inside the nozzle and prevent the nozzle from becoming clogged. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the mounting plate structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the extrusion rod structure of this utility model;
[0023] Figure 5 This is a schematic diagram of the back structure of the upright plate of this utility model;
[0024] Figure 6 This is a schematic diagram of the brush structure of this utility model.
[0025] In the diagram: 1. Injection molding machine body; 2. Worktable; 3. Receiving groove; 4. Placement groove; 5. Mold plate; 6. Inclined groove; 7. Mounting plate; 8. Vertical plate; 9. Track; 10. Moving plate; 11. Vertical groove; 12. Lifting plate; 13. Support rod; 14. First extrusion rod; 15. Swing rod; 16. Second extrusion rod; 17. Third extrusion rod; 18. First gear; 19. Gear plate; 20. First cam; 21. Second cam; 22. Stop bar; 23. Bellows; 24. Nozzle; 25. Ring; 26. Bracket; 27. Brush; 28. Second gear; 29. Rack. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example
[0027] Please see Figures 1-6 This utility model provides a technical solution:
[0028] A hydraulic ejection structure for a plastic mold includes an injection molding machine body 1. A worktable 2 is fixedly connected inside the injection molding machine body 1. A receiving groove 3 is opened inside the worktable 2. A placement groove 4 is opened inside the receiving groove 3. The receiving groove 3 and the placement groove 4 are interconnected. A mold plate 5 is slidably connected inside the receiving groove 3. The receiving groove 3 has a sloping structure design. A sloping groove 6 is opened on the top of the worktable 2. An installation plate 7 is fixedly connected inside the placement groove 4. A vertical plate 8 is fixedly connected to the top of the installation plate 7. A rail 9 is fixedly connected to the outside of the vertical plate 8. By placing the injection molding machine body 1 in a designated position and placing the mold plate 5 inside the receiving groove 3, the injection molding machine body 1 is controlled to press down to complete the injection work. Then, the injection molding machine body 1 is raised and the mold is separated, so that the finished product is placed on the top of the mold plate 5.
[0029] Furthermore, in this embodiment, a movable plate 10 is slidably connected to the outside of the track 9. The movable plate 10 has a vertical groove 11, and a lifting plate 12 is slidably connected inside the vertical groove 11. It is fixed inside the placement groove 4 by the mounting plate 7, and then drives the upright plate 8 to be fixed on the top of the mounting plate 7. By moving the movable plate 10, the track 9 will limit the movable plate 10, so that the movable plate 10 can complete the lateral translation movement to the designated position, and the lifting plate 12 can slide inside the vertical groove 11, so that the lifting plate 12 can complete the lifting movement.
[0030] Furthermore, in this embodiment, a support rod 13 is fixedly connected to the outside of the lifting plate 12. The support rod 13 extends into the interior of the mold plate 5 and is slidably connected to the mold plate 5. A first extrusion rod 14 is fixedly connected to the outside of the moving plate 10. A first contact wheel is rotatably connected inside the first extrusion rod 14. When the injection molding machine body 1 presses down, the mold plate 5 is extruded and moves downward outside the support rod 13. At the same time, the receiving groove 3 limits it, so that the mold plate 5 descends vertically. When the moving plate 10 and the lifting plate 12 move, they drive the mold plate 5 to move upward and translate.
[0031] Furthermore, in this embodiment, a swing rod 15 is rotatably connected to the bottom end of the upright plate 8. A second pressing rod 16 is fixedly connected to the right end of the swing rod 15 and located below the lifting plate 12. A third pressing rod 17 is fixedly connected to the left end of the swing rod 15. By rotating the swing rod 15, the second pressing rod 16 and the third pressing rod 17 are in an inclined state as a whole. Then the second pressing rod 16 descends and pushes the lifting plate 12.
[0032] Furthermore, in this embodiment, a rotating shaft is rotatably connected inside the mounting plate 7, and a first gear 18 is fixedly connected to the top of the rotating shaft. A gear disk 19 is meshed with the outside of the first gear 18 and located on the back of the upright plate 8. An insert shaft is fixedly connected inside the gear disk 19. By embedding a motor in the mounting plate 7 and connecting the rotating shaft to the output end of the motor, the rotation of the motor drives the first gear 18 to rotate and mesh with the gear disk 19, causing the gear disk 19 and the first gear 18 to rotate synchronously. Subsequently, the insert shaft rotates.
[0033] Furthermore, in this embodiment, the outside of the insert shaft is fixedly connected to the first cam 20 and the second cam 21, and the insert shaft extends to the eccentric position of the first cam 20 and the second cam 21, respectively. When the insert shaft rotates, and since the insert shaft is located at the eccentric position of the first cam 20 and the second cam 21, the maximum surfaces of the two cams come into contact with the first extrusion rod 14 and the third extrusion rod 17. Then the third extrusion rod 17 drives the lifting plate 12 to extrude, so that the support rod 13 drives the mold plate 5 to be lifted to the outside of the receiving groove 3. Then the first extrusion rod 14 pushes the moving plate 10, so that the mold plate 5 is translated.
[0034] Furthermore, in this embodiment, a stop bar 22 and a drive block are fixedly connected to the outer side of the workbench 2. A bellows 23 is fixedly connected to the top of the drive block. A nozzle 24 is fixedly connected to the output end of the bellows 23. A ring 25 is fixedly connected to the outside of the nozzle 24. A slider is slidably connected to the outside of the ring 25. After the mold plate 5 is translated, it drives the finished product to contact the stop bar 22, limiting the finished product. At the same time, the suction cup on the stop bar 22 generates an adsorption force with the finished product and rotates the bellows 23, so that the nozzle 24 is aligned with the finished product to spray water for cooling. Finally, the mold plate 5 is controlled to reset, and the finished product is in a suspended state. Gravity causes it to fall into the interior of the inclined groove 6, completing the automatic unloading and preventing the operator from being burned.
[0035] Furthermore, in this embodiment, a bracket 26 is fixedly connected to the outside of the slider. The bracket 26 has two sets, and a connecting shaft is rotatably connected between the two sets of brackets 26. A connecting plate is fixedly connected to the end of the bracket 26 away from the slider. A brush 27 is rotatably connected to the outside of the connecting plate. A second gear 28 is fixedly connected to the outside of the brush 27. A rack 29 is meshed with the outside of the second gear 28. By moving the slider, the bracket 26 is moved to the front of the nozzle 24. When the connecting shaft is rotated, the brush 27 can swing arbitrarily, making it easy for the brush 27 to enter the interior of the nozzle 24. By pulling the rack 29 and meshing it with the second gear 28, the brush 27 rotates, cleaning the dirt inside the nozzle 24 and preventing the nozzle 24 from becoming clogged.
[0036] In this embodiment, the specific implementation scenario is as follows: By placing the injection molding machine body 1 in a designated position and placing the mold plate 5 inside the receiving groove 3, the injection molding machine body 1 is controlled to press down. The mold plate 5 is squeezed and moves downward outside the support rod 13. At the same time, the receiving groove 3 limits it, realizing the vertical descent of the mold plate 5. After the injection molding work is completed, the injection molding machine body 1 is lifted up and the mold is separated, so that the finished product is placed on top of the mold plate 5. By embedding a motor in the mounting plate 7 and connecting the rotating shaft to the output end of the motor, the rotation of the motor drives the first gear 18 to rotate and mesh with the gear plate 19, driving the gear plate 19 and the first gear 18 to rotate synchronously. Then the insert shaft rotates. When the insert shaft rotates, and because the insert shaft is located at the eccentric position of the first cam 20 and the second cam 21, the maximum surface of the two cams contacts the first extrusion rod 14 and the third extrusion rod 17, driving the swing rod 15 to rotate, realizing that the second extrusion rod 16 and the third extrusion rod 17 are in an inclined state. Then the second extrusion rod 16 descends and pushes the lifting plate 12. Then the third extrusion rod 16 descends and pushes the lifting plate 12. Rod 17 drives lifting plate 12 to compress, and lifting plate 12 slides inside vertical groove 11, realizing the ejection movement of lifting plate 12. This allows support rod 13 to lift mold plate 5 to the outside of receiving groove 3. Then, first extrusion rod 14 pushes moving plate 10, causing mold plate 5 to translate. After translation, mold plate 5 brings finished product into contact with stop rod 22, limiting the finished product's position. Simultaneously, suction cups on stop rod 22 create adhesion with the finished product, and rotate corrugated pipe 23, aligning nozzle 24 with the finished product for water spraying and cooling. After the mold plate 5 is reset, the finished product is suspended in the air and falls into the chute 6 by gravity, completing the automatic unloading and preventing the operator from being burned. By moving the slider, the bracket 26 is moved to the front of the nozzle 24. When the connecting shaft rotates, the brush 27 swings freely, making it easy for the brush 27 to enter the interior of the nozzle 24. By pulling the rack 29 and meshing it with the second gear 28, the brush 27 rotates to clean the dirt inside the nozzle 24 and prevent the nozzle 24 from becoming clogged.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A hydraulic ejection structure for a plastic mold, comprising an injection molding machine body (1), characterized in that: The injection molding machine body (1) is fixedly connected to a workbench (2). The workbench (2) has a receiving groove (3) inside. The receiving groove (3) has a placement groove (4) inside. The receiving groove (3) and the placement groove (4) are interconnected. The receiving groove (3) is slidably connected to a mold plate (5). The receiving groove (3) has a sloping structure design. The top of the workbench (2) has a sloping groove (6). The placement groove (4) is fixedly connected to a mounting plate (7). The top of the mounting plate (7) is fixedly connected to a vertical plate (8). The outside of the vertical plate (8) is fixedly connected to a track (9).
2. The hydraulic ejection structure of a plastic mold according to claim 1, characterized in that: The track (9) is slidably connected to a movable plate (10), the movable plate (10) has a vertical groove (11), and the vertical groove (11) is slidably connected to a lifting plate (12).
3. The hydraulic ejection structure of a plastic mold according to claim 2, characterized in that: The lifting plate (12) is fixedly connected to a support rod (13), which extends into the mold plate (5) and is slidably connected to the mold plate (5). The moving plate (10) is fixedly connected to a first extrusion rod (14), which is rotatably connected to a first contact wheel.
4. The hydraulic ejection structure of a plastic mold according to claim 1, characterized in that: The bottom end of the upright plate (8) is rotatably connected to a swing rod (15), the right end of the swing rod (15) and located below the lifting plate (12) is fixedly connected to a second pressing rod (16), and the left end of the swing rod (15) is fixedly connected to a third pressing rod (17).
5. The hydraulic ejection structure of a plastic mold according to claim 1, characterized in that: The mounting plate (7) is rotatably connected to a rotating shaft, and a first gear (18) is fixedly connected to the top of the rotating shaft. A gear disc (19) is meshed with the outside of the first gear (18) and located on the back of the upright plate (8). A plug shaft is fixedly connected inside the gear disc (19).
6. The hydraulic ejection structure of a plastic mold according to claim 5, characterized in that: The insertion shaft is fixedly connected to the outside of the first cam (20) and the second cam (21), and the insertion shaft extends to the eccentric part of the first cam (20) and the second cam (21).
7. The hydraulic ejection structure of a plastic mold according to claim 1, characterized in that: A stop bar (22) and a drive block are fixedly connected to the outside of the workbench (2). A bellows pipe (23) is fixedly connected to the top of the drive block. A nozzle (24) is fixedly connected to the output end of the bellows pipe (23). A ring (25) is fixedly connected to the outside of the nozzle (24). A slider is slidably connected to the outside of the ring (25).
8. The hydraulic ejection structure of a plastic mold according to claim 7, characterized in that: The slider is externally fixedly connected to a bracket (26), and the bracket (26) is provided in two sets. The two sets of brackets (26) are rotatably connected to a connecting shaft, and a connecting plate is fixedly connected to the end of the bracket (26) away from the slider.
9. The hydraulic ejection structure of a plastic mold according to claim 8, characterized in that: A brush (27) is rotatably connected to the outside of the connecting plate, and a second gear (28) is fixedly connected to the outside of the brush (27). A rack (29) is meshed with the outside of the second gear (28).