Sprue internally-cutting structure of injection mold
By designing an in-gate structure of the gate of the injection mold including a rotating plate, a waste channel and a discharge plate, the problem of manual cleaning of gate waste in the prior art is solved, automatic treatment of gate waste is realized, and production efficiency is improved and cleanliness of the working environment.
Patent Information
- Application Number
- CN202323471926.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-19
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-19
AI Technical Summary
After the gate is cut and defiled, the existing injection mold internal cutting structure still needs to be manually cleaned, and the lack of automatic processing structures leads to low work efficiency for workers.
A gate instal structure of injection molds is designed, including upper pressing mold, upper pressing mold, lower pressing mold, lower pressing mold, elevating column, central fixed block, side fixed block, gate cutting knife, rotating plate, waste channel and the discharge plate, through the synergy of these components, the automatic treatment of gate waste is achieved.
Automatic treatment of gate waste is realized, manual cleaning is avoided, production efficiency is improved, and the working environment is kept clean.
Smart Images
Figure CN222451217U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to injection molds, and in particular relates to an injection mold gate incision structure. Background Art
[0002] The injection mold gate incision structure refers to the gate part of the injection mold, which is designed and processed to minimize the contact area between the gate and the injection molded part, thereby reducing the contact area between the injection molded part and the gate and reducing the influence of the gate on the injection molded part. The design of the injection mold gate incision structure can be divided into the following forms: linear incision structure, curved incision structure and oblique incision structure. The design of the injection mold gate incision structure can reduce the influence of the gate on the injection molded part and improve the quality and appearance of the injection molded part. At the same time, a reasonable gate incision structure design can also reduce the consumption and waste of the gate and increase the service life of the mold. However, the current injection mold incision structure still requires manual cleaning of the gate waste after the gate is cut and demolded. There is a lack of a structure that can automatically handle the gate cutting waste, resulting in low work efficiency of workers during operation. Utility Model Content
[0003] The purpose of the utility model is to provide an injection mold gate incision structure to solve the problem that the current injection mold incision structure proposed in the above background technology still requires manual cleaning of gate waste after the gate is cut off and demolding, and lacks a structure that can automatically process the gate cutting waste, resulting in low work efficiency of workers during operation.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold gate incision structure, comprising an upper die and an upper clamping die arranged on the upper die;
[0005] A lower clamping mold is arranged below the upper clamping mold, a lower pressing mold is arranged below the lower clamping mold, two mold lifting columns are arranged below the lower pressing mold, a bottom plate is arranged at the bottom of the mold lifting columns, an injection hole is arranged above the upper pressing mold, an injection channel is arranged below the injection hole, a central axis push rod is arranged in the middle of the bottom plate, central fixing blocks are arranged on both sides of the central axis push rod, a gate cutter is arranged on the central fixing block, a cutter lifting column is arranged at the bottom of the central fixing block, a sliding column is arranged above the central fixing block, a large spring is sleeved on the outer side of the sliding column, side fixing blocks are arranged on both sides of the central fixing block, a gate cutter is also arranged on the side fixing block, a small spring is arranged above the side fixing block, and a cutter lifting column is also arranged at the bottom of the side fixing block;
[0006] Push rod slides are respectively arranged on both sides of the central fixed block, side push rods are arranged inside the push rod slides, upper push rods are arranged on the side push rods, a rotating plate is arranged on the lower clamping mold, a rotating shaft is arranged on the side of the rotating plate, a semicircular groove is arranged at the bottom of the rotating plate, a waste channel is arranged at the bottom of the rotating plate, and discharge plates are respectively arranged on both sides of the lower die.
[0007] Preferably, the side push rod is integrally connected to the upper support rod, and the top height of the upper support rod is consistent with that of the side push rod.
[0008] Preferably, the upper support rod is L-shaped, and movable grooves are arranged around the bottom of the upper support rod, and the upper support rod can perform limited up and down movement inside the movable groove.
[0009] Preferably, a sliding block is provided on the side wall of the movable groove, a sliding groove is provided on the outer side of the upper support rod, and the upper support rod slides on the sliding block through the sliding groove.
[0010] Preferably, the rotating plate is rotatably connected to the lower clamping mold via rotating shafts on both sides, and the ejector rod slideway of the upper ejector rod is located at the bottom of the semicircular groove.
[0011] Preferably, the upper end of the waste channel is arranged inside the lower clamping die, and the lower end of the waste channel is arranged inside the lower pressing die, and the waste channel is formed by splicing these two parts.
[0012] Preferably, the discharge plate is fixed to the side of the lower die by screws, and the discharge plate allows the waste to flow out normally.
[0013] Compared with the prior art, the utility model provides an injection mold gate incision structure, which has the following beneficial effects:
[0014] 1. Through the setting of the side top, the injection molded part is lifted up to separate it from the lower mold, so that the injection molded part can be easily taken out and the production efficiency is improved. Through the setting of the upper ejector rod, the rotating plate and the discharge plate, one end of the rotating plate is lifted up by moving upward, so that the rotating plate can send the gate waste into the waste channel to realize automatic treatment of the waste. The rotating plate rotates one end to drive the cut gate waste to fall into the waste channel and flow out from the discharge plate, avoiding manual cleaning and improving production efficiency. Through the setting of the waste channel, the cut gate waste is collected, which is convenient for subsequent treatment, avoids waste scattering, and keeps the working environment clean. The ejector slide enables the side ejector rod and the upper ejector rod to move smoothly, which can ensure the stability and accuracy of the ejector rod. Through the setting of the above components, the injection mold can realize automatic waste treatment, reduce the time and labor of manual cleaning, improve production efficiency, and keep the working environment clean.
[0015] 2. Through the setting of the semicircular groove, the bottom of the rotating plate is in direct contact with the upper support rod to prevent the upper support rod from being separated from the rotating plate, thereby ensuring the stability and accuracy of the top rod. Through the setting of the movable groove, a movable space is provided for the up and down movement of the upper support rod, while also limiting the up and down movement distance of the upper support rod, thereby ensuring that the moving trajectory of the upper support rod is accurate and errors are avoided. Through the setting of the slider, it can play an auxiliary sliding role when the upper support rod moves upward, reducing the greater friction between the upper support rod and the top rod slideway, thereby increasing the service life of the upper support rod and reducing maintenance costs. Through the setting of the above components, the stability and accuracy of the top rod can be guaranteed, errors can be avoided, and the service life of the top rod can also be extended, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.
[0017] Figure 2 It is a schematic diagram of the local structure of the large spring of the utility model.
[0018] Figure 3 It is a schematic diagram of the local structure of the rotating plate of the utility model.
[0019] Figure 4 It is a schematic diagram of the local structure of the slider of the utility model.
[0020] In the figure: 1. middle axis push rod; 2. lower pressure die; 3. bottom plate; 4. mold lifting column; 5. injection hole; 6. injection channel; 7. upper pressure die; 8. side push rod; 9. central fixing block; 10. upper mold; 11. cutter lifting column; 12. gate cutter; 13. side fixing block; 14. waste channel; 15. upper push rod; 16. discharge plate; 17. movable groove; 18. lower mold; 19. slide column; 20. rotating plate; 21. rotating shaft; 22. semicircular groove; 23. push rod slideway; 24. slider; 25. small spring; 26. large spring. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] The utility model provides Figure 1-4 The injection mold gate incision structure shown includes an upper die 7 and an upper clamping die 10 arranged on the upper die 7;
[0023] A lower clamping mold 18 is arranged below the upper clamping mold 10, a lower pressing mold 2 is arranged below the lower pressing mold 2, two mold jacking columns 4 are arranged below the lower pressing mold 2, a bottom plate 3 is arranged at the bottom of the mold jacking columns 4, an injection hole 5 is arranged above the upper pressing mold 7, an injection channel 6 is arranged below the injection hole 5, a central axis push rod 1 is arranged in the middle of the bottom plate 3, central fixed blocks 9 are arranged on both sides of the central axis push rod 1, a gate cutter 12 is arranged on the central fixed block 9, a cutter jacking column 11 is arranged at the bottom of the central fixed block 9, a sliding column 19 is arranged above the central fixed block 9, a large spring 26 is sleeved on the outer side of the sliding column 19, side fixed blocks 13 are arranged on both sides of the central fixed block 9, a gate cutter 12 is also arranged on the side fixed block 13, a small spring 25 is arranged above the side fixed block 13, and a cutter jacking column 11 is also arranged at the bottom of the side fixed block 13;
[0024] A push rod slide 23 is provided on both sides of the central fixed block 9, a side push rod 8 is provided inside the push rod slide 23, an upper push rod 15 is provided on the side push rod 8, a rotating plate 20 is provided on the lower clamping mold 18, a rotating shaft 21 is provided on the side of the rotating plate 20, a semicircular groove 22 is provided at the bottom of the rotating plate 20, a waste channel 14 is provided at the bottom of the rotating plate 20, and discharge plates 16 are provided on both sides of the lower die 2.
[0025] In this embodiment, first, the corresponding plastic raw materials are prepared. The plastic raw materials are usually granular or powdery and need to be batched and pretreated. Then, the prepared plastic raw materials are placed in the hopper of the injection molding machine. The plastic raw materials are injected into the injection hole 5 on the mold by heating and melting, and flow through the injection channel 6. During the injection molding process, the injection molding machine will apply a certain pressure and temperature to make the plastic raw materials fully melt and flow and fill the mold cavity. At this time, the gate cutter 12 is pushed up by the bottom cutter lifting column 11 and the injection molded parts that are not fully formed are cut inwardly, and the large spring 26 and the small spring 25 will buffer the upward movement of the gate cutter 12. When the injection molded parts are cooled and solidified in the mold, the lower mold 18 moves down, and the injection molded parts are directly lifted up by the side push rod 8 to demold them. Finally, the injection molded parts are subjected to post-processing processes such as trimming, cleaning, and assembly, so that the injection molded parts meet the final product requirements.
[0026] like Figure 1 , Figure 3 and Figure 4 As shown, the side push rod 8 is integrally connected with the upper push rod 15, the upper push rod 15 is at the same height as the top of the side push rod 8, the upper push rod 15 is L-shaped, and a movable groove 17 is arranged around the bottom of the upper push rod 15. The upper push rod 15 can move up and down within the movable groove 17 to a limited extent. A slider 24 is arranged on the side wall of the movable groove 17, and a slide groove is arranged on the outer side of the upper push rod 15. The upper push rod 15 slides on the slider 24 through the slide groove.
[0027] like Figure 2As shown, the rotating plate 20 is rotatably connected to the lower mold 18 through the rotating shafts 21 on both sides, the top rod slide 23 of the upper support rod 15 is located at the bottom of the semicircular groove 22, the upper end of the waste channel 14 is arranged inside the lower mold 18, and the lower end of the waste channel 14 is arranged inside the lower die 2. The waste channel 14 is spliced by these two parts, and the discharge plate 16 is fixed to the side of the lower die 2 by screws. The discharge plate 16 allows the waste to flow out normally.
[0028] Preferably, through the arrangement of the side ejector rod 8, the upper ejector rod 15, the rotating plate 20, the rotating shaft 21, the waste channel 14, the ejector slideway 23 and the discharge plate 16, after the injection mold is injected, the plurality of cutter ejector columns 11 push the upper central fixed block 9 and the side fixed block 13 to move upward, and when the gate cutters 12 above the central fixed block 9 and the side fixed block 13 contact the injection molded part, the gate of the injection molded part will be cut off, and then the lower die 2 drives the lower mold 18 to descend through the mold ejector column 4, and at this time, the side ejector rod 8 directly passes through the ejector slideway 23 to lift the injection molded part to make it separate from the lower die The mold 18 is closed, and driven by the side push rod 8, the upper push rod 15 also moves upward through the push rod slide 23 and lifts one end of the rotating plate 20. Since one end of the rotating plate 20 is subjected to force and is rotatably connected to the lower mold 18 by the rotating shaft 21 in the middle, the outer end of the rotating plate 20 rotates downward. At this time, the rotating plate 20 will drive the cut gate waste to fall into the waste channel 14 and flow out from the discharge plate 16. The structure can automatically process the waste after the gate waste is cut off through the setting of the rotating plate 20, avoiding the waste time of manual cleaning and improving production efficiency.
[0029] Preferably, through the arrangement of the semicircular groove 22, the movable groove 17, and the slider 24, the semicircular groove 22 is at the bottom of the rotating plate 20, and directly contacts the semicircular groove 22 when the upper support rod 15 is pushed up, thereby preventing the upper support rod 15 from being separated from the rotating plate 20. The movable groove 17 provides a movable space for the upper support rod 15 to move up and down, and also limits the distance that the upper support rod 15 moves up and down. The slider 24 can play an auxiliary sliding role when the upper support rod 15 moves up, thereby reducing the greater friction between the upper support rod 15 and the top rod slideway 23, and improving the service life of the upper support rod 15.
[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An injection mold gate incision structure, comprising an upper die (7) and an upper clamping die (10) arranged on the upper die (7); A lower clamping mold (18) is arranged below the upper clamping mold (10), a lower pressing mold (2) is arranged below the lower clamping mold (18), two mold lifting columns (4) are arranged below the lower pressing mold (2), a bottom plate (3) is arranged at the bottom of the mold lifting columns (4), an injection hole (5) is arranged above the upper pressing mold (7), an injection channel (6) is arranged below the injection hole (5), a central axis push rod (1) is arranged in the middle of the bottom plate (3), and central fixing blocks (9) are respectively arranged on both sides of the central axis push rod (1), and the central fixing blocks (9) is provided with a gate cutter (12), a cutter lifting column (11) is provided at the bottom of the central fixed block (9), a sliding column (19) is provided above the central fixed block (9), a large spring (26) is sleeved on the outer side of the sliding column (19), side fixed blocks (13) are provided on both sides of the central fixed block (9), a gate cutter (12) is also provided on the side fixed block (13), a small spring (25) is provided above the side fixed block (13), and a cutter lifting column (11) is also provided at the bottom of the side fixed block (13); Features: A push rod slideway (23) is provided on both sides of the central fixed block (9), a side push rod (8) is provided inside the push rod slideway (23), an upper push rod (15) is provided on the side push rod (8), a rotating plate (20) is provided on the lower clamping die (18), a rotating shaft (21) is provided on the side of the rotating plate (20), a semicircular groove (22) is provided at the bottom of the rotating plate (20), a waste channel (14) is provided at the bottom of the rotating plate (20), and discharge plates (16) are provided on both sides of the lower die (2).
2. The injection mold gate incision structure according to claim 1, characterized in that: The side push rod (8) is integrally connected to the upper support rod (15), and the top heights of the upper support rod (15) and the side push rod (8) are consistent.
3. The injection mold gate incision structure according to claim 2, characterized in that: The upper support rod (15) is L-shaped, and a movable groove (17) is arranged around the bottom of the upper support rod (15). The upper support rod (15) can move up and down in a limited manner inside the movable groove (17).
4. The injection mold gate incision structure according to claim 3, characterized in that: A sliding block (24) is arranged on the side wall of the movable groove (17), and a sliding groove is arranged on the outer side of the upper supporting rod (15), and the upper supporting rod (15) slides on the sliding block (24) through the sliding groove.
5. The injection mold gate incision structure according to claim 1, characterized in that: The rotating plate (20) is rotatably connected to the lower clamping mold (18) via rotating shafts (21) on both sides, and the top rod slideway (23) of the top supporting rod (15) is located at the bottom of the semicircular groove (22).
6. The injection mold gate incision structure according to claim 1, characterized in that: The upper end of the waste channel (14) is arranged inside the lower clamping die (18), and the lower end of the waste channel (14) is arranged inside the lower pressing die (2). The waste channel (14) is formed by splicing these two parts.
7. The injection mold gate incision structure according to claim 1, characterized in that: The discharge plate (16) is fixed to the side of the lower die (2) by means of screws, and the discharge plate (16) can allow waste to flow out normally.