Air knockout machine

Abstract

The utility model relates to injection mold technical field especially, more particularly to a kind of air blowing stripping machine.The technical scheme, including mounting frame one, fixed mould one, fixed mould two, movable mould, hydraulic rod and installation cylinder, the fixed mould one is provided in mounting frame one end, the fixed mould two is provided in fixed mould one side, the movable mould is set in the hydraulic rod telescopic end, the fixed mould one outer wall is sleeved with collar one, the fixed mould two outer wall is sleeved with collar two, spring one is set between the collar one and collar two, the mounting frame one end is provided with air pump, the air pump output is provided with ring pipe, the ring pipe one end is provided with installation cylinder, the installation cylinder one end is provided with air pipe, the fixed mould one side inside is provided with gas groove.The utility model adjusts fixed mould to open-close structure, and by small-stroke spring one support, provide power stripping force when opening mould, and by gas groove delivery jet flow, so that thin film meal box carries out non-contact type safe jet stripping.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an air-blowing demolding machine. Background Technology

[0002] Injection molds produce lunch boxes by injecting molten plastic into a precision cavity at high temperature. After cooling and solidification, the mold structure includes a molding core, cooling channels, and an ejection system. It can efficiently manufacture lightweight, well-sealed standardized lunch boxes, which are widely used in food packaging. Its advantages are high production capacity and low waste, but it has strict requirements for mold precision to ensure that the lunch box wall thickness is uniform and demolding is smooth.

[0003] Thin-walled lunch boxes have low structural strength. When using long-stroke springs for ejection, the instantaneous thrust of the ejector pins is easily concentrated in a local area, causing the stress to exceed the material's yield limit, leading to deformation or breakage. To address this issue, we propose an air-blowing demolding machine. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing an air-blowing demolding machine.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air-blowing demolding machine, comprising a mounting frame 1, a fixed mold 1, a fixed mold 2, a moving mold, a hydraulic rod, and a mounting cylinder. The mounting frame 1 has a mounting frame 2 at one end, a fixed mold 1 at one end, a fixed mold 2 at one side of the fixed mold 1, a hydraulic rod at the upper side of the mounting frame 2, and a moving mold at the telescopic end of the hydraulic rod. A collar 1 is sleeved on the outer wall of the fixed mold 1, and a collar 2 is sleeved on the outer wall of the fixed mold 2. Multiple sets of springs 1 are arranged between the collar 1 and the collar 2. An air pump is provided at one end of the mounting frame 1, a ring pipe is provided at the output end of the air pump, a mounting cylinder is provided at one end of the ring pipe, and an air pipe is provided at one end of the mounting cylinder. An air groove communicating with the air pipe is opened inside one side of the fixed mold.

[0006] Preferably, an inclined surface is provided between the first fixed mold and the second fixed mold, and the air groove is inclined towards the center of the first fixed mold. The inclined surface plays a guiding role when the first fixed mold and the second fixed mold are joined, and the two fixed molds are tightly fitted together by compression.

[0007] Preferably, one end of the moving mold is provided with two sets of symmetrically distributed positioning rods, and one end of the fixed mold has two sets of symmetrically distributed positioning holes that are slidably installed with the positioning rods. When the moving mold and the fixed mold are docked, the positioning rods are inserted into the positioning holes, and effective positioning is achieved when the molds are docked.

[0008] Preferably, the upper end of the first collar is provided with a guide rod located inside the first spring, and the lower end of the second collar is provided with a guide cylinder located inside the first spring and slidably inserted with the guide rod. During the extension and retraction of the first spring, the guide rod slides inside the guide cylinder, guiding the first spring to prevent it from shifting outward, thus improving the stability of the first spring during extension and retraction.

[0009] Preferably, a valve ring is provided on the inner wall of the mounting cylinder, and a valve core is provided inside the lower end of the valve ring. During use, the valve ring supports the valve core, causing the valve core to be elastically pressed into the inside of the valve ring, thus closing the mounting cylinder.

[0010] Preferably, a second spring is provided at the lower end of the valve core, and a support ring connected to the inner wall of the mounting cylinder is provided at the lower end of the second spring. The support ring supports one end of the valve spring, and the inside of the support ring is hollow to ensure the passage of airflow.

[0011] Preferably, the lower end of the valve core is provided with a U-shaped connecting rod that is slidably installed inside the support ring. One end of the connecting rod is provided with a second toothed plate, and a bearing bracket is provided on one side of the mounting frame. A rotating shaft is rotatably installed inside the bearing bracket, and a gear that meshes with the second toothed plate is sleeved on the outer wall of the rotating shaft. One end of the moving mold is provided with a first toothed plate that meshes with the gear. The first and second toothed plates are linked by gears, and the first and second toothed plates move relative to or away from each other at the same time. When the first toothed plate is raised, the linkage gear is raised, and the gear pushes the second toothed plate to fall. The second toothed plate drives the connecting rod to pull the valve core, causing the valve core to fall and the mounting cylinder to open.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model divides the fixed mold into fixed mold one and fixed mold two. After the thin-walled lunch box is injection molded, the moving mold separates from the fixed mold. At this time, fixed mold one and fixed mold two, which are attached together, are supported by the elastic force of spring one. Spring one has a short stroke, which makes the inner wall of the thin-walled lunch box separate from fixed mold one. During the movement of the moving mold, the inside of the linkage mounting cylinder opens. At this time, the airflow delivered by the air pump acts on the opening of fixed mold one and fixed mold two through the mounting cylinder, and blows the thin film lunch box to demold in the form of inclined airflow. The non-contact air blowing demolding is gentler and avoids damage to the lunch box, which helps to demold the thin film injection molded structure conveniently and safely. Attached Figure Description

[0014] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a front-view three-dimensional structural diagram of the moving model of this utility model;

[0016] Figure 3 This is a side view three-dimensional structural diagram of the middle mold of this utility model;

[0017] Figure 4 This is a top-view three-dimensional structural diagram of the ring tube of this utility model;

[0018] Figure 5 This is a three-dimensional cross-sectional view of the mounting cylinder of this utility model.

[0019] Reference numerals in the attached drawings: 1. Mounting bracket one; 2. Fixed mold one; 3. Fixed mold two; 4. Inclined surface; 5. Moving mold; 6. Hydraulic rod; 7. Mounting bracket two; 8. Tooth plate one; 9. Positioning rod; 10. Air pump; 11. Positioning hole; 12. Collar one; 13. Collar two; 14. Guide rod; 15. Spring one; 16. Guide cylinder; 17. Ring pipe; 18. Mounting cylinder; 19. Air pipe; 20. Connecting rod; 21. Tooth plate two; 22. Gear; 23. Rotating shaft; 24. Bearing bracket; 25. Support ring; 26. Spring two; 27. Valve core; 28. Valve ring; 29. ​​Air groove. Detailed Implementation

[0020] 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.

[0021] like Figures 1-5 As shown, the present invention proposes an air-blowing demolding machine, including a mounting frame 1, a fixed mold 2, a fixed mold 3, a moving mold 5, a hydraulic rod 6, and a mounting cylinder 18. A mounting frame 7 is provided at one end of the mounting frame 1, a fixed mold 2 is provided at one end of the mounting frame 1, a fixed mold 3 is provided on one side of the fixed mold 2, a hydraulic rod 6 is provided on one side of the upper end of the mounting frame 7, and a moving mold 5 is provided at the telescopic end of the hydraulic rod 6. A collar 12 is sleeved on the outer wall of the fixed mold 2, a collar 23 is sleeved on the outer wall of the fixed mold 3, and multiple sets of springs 15 are provided between the collar 12 and the collar 23. An air pump 10 is provided at one end of the mounting frame 1, a ring pipe 17 is provided at the output end of the air pump 10, a mounting cylinder 18 is provided at one end of the ring pipe 17, an air pipe 19 is provided at one end of the mounting cylinder 18, and an air groove 29 communicating with the air pipe 19 is opened inside the side of the fixed mold 2.

[0022] An inclined surface 4 is provided between the first mold 2 and the second mold 3, and the air groove 29 is inclined toward the center of the first mold 2;

[0023] The moving mold 5 has two sets of symmetrically distributed positioning rods 9 at one end, and the fixed mold 3 has two sets of symmetrically distributed positioning holes 11 that are slidably installed with the positioning rods 9 at one end.

[0024] The upper end of the first collar 12 is provided with a guide rod 14 located inside the first spring 15, and the lower end of the second collar 13 is provided with a guide cylinder 16 located inside the first spring 15 and slidably inserted with the guide rod 14.

[0025] A valve ring 28 is provided on the inner wall of the mounting cylinder 18, and a valve core 27 is provided inside the lower end of the valve ring 28;

[0026] A second spring 26 is provided at the lower end of the valve core 27, and a support ring 25 connected to the inner wall of the mounting cylinder 18 is provided at the lower end of the second spring 26.

[0027] The lower end of the valve core 27 is provided with a U-shaped connecting rod 20 that is slidably installed inside the support ring 25. One end of the connecting rod 20 is provided with a toothed plate 21. A bearing bracket 24 is provided on the side of the mounting bracket 1. A rotating shaft 23 is rotatably installed inside the bearing bracket 24. A gear 22 that meshes with the toothed plate 21 is sleeved on the outer wall of the rotating shaft 23. One end of the moving mold 5 is provided with a toothed plate 8 that meshes with the gear 22.

[0028] Based on the implementation steps of Example 1: In use, firstly, the fixed mold 1 2 and fixed mold 2 3 are precisely connected. The inclined surface 4 between them plays a guiding role. The moving mold 5 squeezes the fixed mold 1 2 and fixed mold 2 3 to fit tightly together, forming a complete injection cavity. It is worth noting that an injection structure needs to be installed inside one end of the fixed mold 1 2 and fixedly connected to the outlet of the injection tube. Subsequently, the moving mold 5 moves towards the fixed mold under the drive of the hydraulic rod 6. The two sets of symmetrically distributed positioning rods 9 at one end of the moving mold 5 are precisely inserted into the positioning holes 11 opened inside one end of the fixed mold 2 3 to achieve effective positioning when the molds are connected, ensuring the stability and accuracy of the mold during the injection process.

[0029] After injection molding, the moving mold 5 detaches from the fixed mold under the action of the hydraulic rod 6. At this time, the fixed mold 1 2 and the fixed mold 2 3 begin to separate under the elastic force of the collar 1 12, the collar 2 13, and multiple sets of springs 1 15. Because the stroke of spring 1 15 is short, it can allow the inner wall of the thin-walled lunch box to detach from the fixed mold 2, preparing for the subsequent air-blowing demolding. During the movement of the moving mold 5, the toothed plate 8 at one end of the moving mold 5 moves accordingly. Because the toothed plate 8 meshes with the gear 22, the gear 22 rotates. And because the gear 22 meshes with the toothed plate 21 at one end of the connecting rod 20, the gear 2... 2. Push the toothed plate 21 down. The toothed plate 21 drives the connecting rod 20 to slide inside the support ring 25, thereby pulling the valve core 27, so that the valve core 27 overcomes the elastic force of the spring 26 and falls down. The mounting cylinder 18 is opened. At this time, the air pump 10 is started. The airflow enters the ring pipe 17 through the output end of the air pump 10, and then passes through the mounting cylinder 18 and the air pipe 19. Finally, it is ejected from the air groove 29 opened inside the side of the fixed mold 2. The air groove 29 is inclined towards the center of the fixed mold 2. The airflow acts on the thin-walled lunch box in the form of inclined plane 4 airflow, realizing non-contact air blowing demolding.

[0030] By utilizing the synergistic effect of mechanical transmission and pneumatic action, the initial separation of fixed mold 12 and fixed mold 23 is achieved through the elastic restoring force of spring 15. At the same time, the transmission mechanism composed of toothed plate 18, gear 22, and toothed plate 21 converts the movement of moving mold 5 into the opening action of valve core 27, thereby controlling the flow of air from air pump 10. The design of inclined surface 4 air groove 29 allows the airflow to act more evenly and gently on the surface of the lunch box.

[0031] The non-contact air-blowing demolding method is extremely gentle, effectively avoiding the problem of concentrated ejector force in a localized area during traditional large-stroke spring ejection, which can cause stress exceeding the material's yield limit and lead to deformation or breakage of the lunchbox. This greatly improves the demolding quality and yield of thin-walled lunchboxes. The short stroke of spring-15, combined with the inclined surface 4 structure, allows the inner wall of the lunchbox to quickly detach from the fixed mold-2 after the moving mold 5 disengages, shortening the demolding time and improving production efficiency. The ingenious design of the transmission mechanism realizes the linkage between the movement of the moving mold 5 and the airflow activation of the air pump 10, requiring no additional operation, with a high degree of automation and simple operation. It effectively solves the problems of easy damage and low efficiency during the injection molding demolding process of thin-walled lunchboxes, providing an efficient, safe, and reliable demolding solution for the production of thin-walled lunchboxes.

[0032] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pneumatic demolding machine, comprising a mounting frame (1), a fixed mold (2), a second fixed mold (3), a moving mold (5), a hydraulic rod (6), and a mounting cylinder (18), characterized in that: One end of the mounting frame 1 (1) is provided with a mounting frame 2 (7), one end of the mounting frame 1 (1) is provided with a fixed mold 1 (2), one side of the fixed mold 1 (2) is provided with a fixed mold 2 (3), one side of the upper end of the mounting frame 2 (7) is provided with a hydraulic rod (6), the telescopic end of the hydraulic rod (6) is provided with a moving mold (5), the outer wall of the fixed mold 1 (2) is fitted with a collar 1 (12), the outer wall of the fixed mold 2 (3) is fitted with a collar 2 (13), multiple sets of springs 1 (15) are provided between the collar 1 (12) and the collar 2 (13), one end of the mounting frame 1 (1) is provided with an air pump (10), the output end of the air pump (10) is provided with a ring pipe (17), one end of the ring pipe (17) is provided with an installation cylinder (18), one end of the installation cylinder (18) is provided with an air pipe (19), and the inside of the side of the fixed mold 1 (2) is provided with an air groove (29) communicating with the air pipe (19).

2. The air-blowing demolding machine according to claim 1, characterized in that: An inclined surface (4) is provided between the first mold (2) and the second mold (3), and the air groove (29) is inclined toward the center of the first mold (2).

3. The air-blowing demolding machine according to claim 1, characterized in that: The moving mold (5) has two sets of symmetrically distributed positioning rods (9) at one end, and the fixed mold (3) has two sets of symmetrically distributed positioning holes (11) inside one end that are slidably installed with the positioning rods (9).

4. The air-blowing demolding machine according to claim 1, characterized in that: The upper end of the first collar (12) is provided with a guide rod (14) located inside the first spring (15), and the lower end of the second collar (13) is provided with a guide cylinder (16) located inside the first spring (15) and slidably inserted with the guide rod (14).

5. The air-blowing demolding machine according to claim 1, characterized in that: The inner wall of the mounting cylinder (18) is provided with a valve ring (28), and the lower end of the valve ring (28) is provided with a valve core (27).

6. The air-blowing demolding machine according to claim 5, characterized in that: The lower end of the valve core (27) is provided with a second spring (26), and the lower end of the second spring (26) is provided with a support ring (25) connected to the inner wall of the mounting cylinder (18).

7. The air-blowing demolding machine according to claim 5, characterized in that: The lower end of the valve core (27) is provided with a U-shaped connecting rod (20) that is slidably installed inside the support ring (25). One end of the connecting rod (20) is provided with a toothed plate (21). The mounting bracket (1) is provided with a bearing bracket (24). The bearing bracket (24) is rotatably installed with a rotating shaft (23). The outer wall of the rotating shaft (23) is sleeved with a gear (22) that meshes with the toothed plate (21). One end of the moving mold (5) is provided with a toothed plate (8) that meshes with the gear (22).

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