An inverted mold for a plastic box

Abstract

This utility model relates to the field of plastic box manufacturing and processing technology, and in particular to an inverted mold for plastic boxes. The inverted mold for plastic boxes includes: a base, a worktable fixedly connected to the top of the base, an inverted mold body installed inside the worktable, an injection tube fixedly connected to the top of the worktable, first sliding grooves symmetrically opened on the top of the worktable, clamping rods for clamping the inverted mold body symmetrically installed inside the worktable, support plates for supporting the inverted mold body symmetrically slidably connected inside the worktable, and a driving component for driving the support rods to clamp the inverted mold body installed inside the worktable. The inverted mold for plastic boxes provided by this utility model can automatically clamp and support the inverted mold body through the clamping rods and support plates, and has the advantages of efficient clamping, precise positioning and low interference design.

Description

Technical Field

[0001] This utility model relates to the field of plastic box production and processing technology, and in particular to a plastic box body inverted mold. Background Technology

[0002] Plastic boxes are hollow containers made from thermoplastic plastics such as polyethylene and polypropylene through injection molding. They are lightweight, corrosion-resistant, and have good insulation properties. The use of inverted injection molds to manufacture plastic boxes is mainly because it can optimize the demolding process, avoid the demolding difficulties caused by the deep cavity and inverted structure of traditional upright molds, and reduce the risk of product deformation.

[0003] Traditional inverted mold bodies have significant shortcomings in installation, fixing, and replacement. In existing technologies, fixing the inverted mold body mostly relies on manual adjustment and bolt tightening, which is not only cumbersome and time-consuming, affecting production efficiency, but also makes it difficult to ensure the accuracy of the inverted mold body installation by manual operation. This can easily lead to displacement of the inverted mold body during injection molding, resulting in quality defects such as dimensional deviations and flash in the plastic box molding process. In addition, the fixing structure of traditional inverted mold bodies lacks flexibility and is difficult to adapt to molds of different sizes and specifications. When it is necessary to change the inverted mold body to produce different models of plastic boxes, it is often necessary to readjust the entire fixing device or even replace the appropriate parts. This not only increases equipment maintenance costs, but also significantly prolongs downtime for mold changeovers, reducing the utilization rate and production efficiency of the production line.

[0004] Therefore, it is necessary to provide a new inverted mold for plastic boxes to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a plastic box inverted mold.

[0006] The plastic box inverted mold provided by this utility model includes: a base, a worktable fixedly connected to the top of the base, an inverted mold body installed inside the worktable, an injection tube fixedly connected to the top of the worktable, first sliding grooves symmetrically opened on the top of the worktable, clamping rods for clamping the inverted mold body symmetrically installed inside the worktable, support plates for supporting the inverted mold body symmetrically slidably connected inside the worktable, and a drive assembly for driving the support rods to clamp the inverted mold body installed inside the worktable.

[0007] Preferably, the drive assembly includes: a drive motor, a bidirectional threaded rod, a first movable seat, a second movable seat, a rotating threaded rod, and an extrusion plate. The drive motor is fixedly connected inside the worktable, and the bidirectional threaded rod is rotatably connected inside the worktable. The output end of the drive motor is fixed to one end of the bidirectional threaded rod. One end of the bidirectional threaded rod is threadedly connected to the first movable seat, and the other end of the bidirectional threaded rod is threadedly connected to the second movable seat. The bottom of both the first and second movable seats has a second sliding groove, and one side of both the first and second movable seats has a groove. The rotating threaded rod is installed on both the first and second movable seats through the second sliding groove. The outer wall of the rotating threaded rod is symmetrically threaded with a plate for extrusion, and the middle of the rotating threaded rod is rotatably connected to a clamping rod.

[0008] Preferably, a first connecting rod is rotatably connected to the bottom of the first movable seat, and a second connecting rod is rotatably connected to the bottom of the second movable seat. The end of the first connecting rod away from the first movable seat is rotatably connected to the corresponding support plate, and the end of the second connecting rod away from the second movable seat is rotatably connected to the corresponding support plate.

[0009] Preferably, the first movable seat and the second movable seat are arranged symmetrically.

[0010] Preferably, both of the rotating threaded rods pass through the first sliding groove and are fixedly connected to a knob.

[0011] Preferably, both clamping rods are located above the two support plates in the vertical direction.

[0012] Preferably, the first connecting rod and the second connecting rod are staggered in the vertical direction.

[0013] Preferably, both support plates have a sloping design on the side closest to the inverted mold body.

[0014] Compared with related technologies, the inverted mold for plastic boxes provided by this utility model has the following advantages:

[0015] High-efficiency clamping:

[0016] This device utilizes a linkage design between a drive motor and a bidirectional threaded rod to achieve automated coordinated movement between the clamping rod and the support plate. Operators only need to place the inverted mold body on top of the support plate, and the device automatically completes the clamping, fixing, and demolding operations without requiring manual adjustment of bolts or auxiliary positioning. Compared to traditional manual clamping methods, this significantly reduces the time required for mold changes and improves the continuous operation efficiency of the production line.

[0017] Precise positioning:

[0018] The symmetrical and synchronous movement of the first and second moving seats, combined with the guiding effect of the inclined support plate, ensures that the inverted mold body is accurately positioned during the falling process, avoiding injection displacement caused by installation misalignment. At the same time, by rotating the adjustment mechanism of the threaded rod and the extrusion plate, it can flexibly adapt to inverted mold bodies of different sizes, improving the molding qualification rate of plastic boxes while ensuring uniform clamping force.

[0019] Low interference design:

[0020] The layered layout of the inclined surface of the support plate and the clamping rod, combined with the staggered arrangement of the first and second connecting rods, structurally avoids the risk of motion interference between components. During the clamping and demolding process of the inverted mold body, the running trajectories of each component do not interfere with each other, reducing wear caused by mechanical collisions. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the inverted mold for the plastic box body provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shows the structure of the driving component.

[0023] Figure 3 for Figure 2 The diagram shows the structure of the support plate.

[0024] Figure 4 for Figure 3 The diagram shows the structure of the first movable seat.

[0025] Labels in the diagram: 1. Base; 2. Workbench; 3. Inverted mold body; 4. Injection tube; 5. First slide groove; 6. Clamping rod; 7. Support plate; 21. Drive motor; 22. Bidirectional threaded rod; 23. First moving seat; 24. Second moving seat; 25. Rotating threaded rod; 26. Extrusion plate; 27. Second slide groove; 28. Groove; 31. First connecting rod; 32. Second connecting rod; 51. Knob. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0027] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0028] Please see Figures 1 to 4A plastic box inverted mold includes: a base 1, a workbench 2 fixedly connected to the top of the base 1, an inverted mold body 3 installed inside the workbench 2, an injection tube 4 fixedly connected to the top of the workbench 2, first sliding grooves 5 symmetrically opened on the top of the workbench 2, clamping rods 6 symmetrically installed inside the workbench 2 for clamping the inverted mold body 3, support plates 7 symmetrically slidably connected inside the workbench 2 for supporting the inverted mold body 3, and a driving assembly for driving the support rods to clamp the inverted mold body 3 installed inside the workbench 2. The two clamping rods 6 are both located above the two support plates 7 in the vertical direction, and the side of the two support plates 7 closest to the inverted mold body 3 is designed with an inclined surface.

[0029] It should be noted that the two clamping rods 6 will not collide with the two support plates 7 during the movement. The inclined surface design is used to push out the inverted mold body 3. The top of the support plate 7 is convenient for workers to place the inverted mold body 3.

[0030] Please see Figures 1 to 4 The drive assembly includes: a drive motor 21, a bidirectional threaded rod 22, a first movable seat 23, a second movable seat 24, a rotating threaded rod 25, and an extrusion plate 26. The drive motor 21 is fixedly connected inside the worktable 2, and the bidirectional threaded rod 22 is rotatably connected inside the worktable 2. The output end of the drive motor 21 is fixed to one end of the bidirectional threaded rod 22. One end of the bidirectional threaded rod 22 is threadedly connected to the first movable seat 23, and the other end is threadedly connected to the second movable seat 24. The bottom of both the first movable seat 23 and the second movable seat 24 has a second sliding groove 27, and one side of both the first movable seat 23 and the second movable seat 24 has a groove 28. The rotating threaded rod 25 is mounted on both the first movable seat 23 and the second movable seat 24 through the second sliding groove 27. The outer wall of the rotating threaded rod 25 is symmetrically threaded with a device for the extrusion plate 26. The middle part of rod 25 is rotatably connected to clamping rod 6. The bottom of the first movable seat 23 is rotatably connected to the first connecting rod 31, and the bottom of the second movable seat 24 is rotatably connected to the second connecting rod 32. The end of the first connecting rod 31 away from the first movable seat 23 is rotatably connected to the corresponding support plate 7. The bottom of the first movable seat 23 is rotatably connected to the first connecting rod 31, and the bottom of the second movable seat 24 is rotatably connected to the second connecting rod 32. The end of the first connecting rod 31 away from the first movable seat 23 is rotatably connected to the corresponding support plate 7, and the end of the second connecting rod 32 away from the second movable seat 24 is rotatably connected to the corresponding support plate 7. The first movable seat 23 and the second movable seat 24 are symmetrically arranged. Both of the two rotating threaded rods 25 pass through the first sliding groove 5 and are fixedly connected to the knob 51. The first connecting rod 31 and the second connecting rod 32 are staggered in the vertical direction.

[0031] It should be noted that the first moving seat 23 and the second moving seat 24 respectively drive the corresponding clamping rods 6 to jointly clamp the inverted mold body 3. The knob 51 is located above the worktable 2 for easy operation. The misaligned setting causes the first connecting rod 31 and the second connecting rod 32 to collide during movement.

[0032] The working principle of the inverted plastic box mold provided by this utility model is as follows:

[0033] Placement of the inverted mold body 3:

[0034] The workers place the inverted mold body 3 from the top of the workbench 2 onto the top of the two support plates 7. The top of the support plates 7 is flat, which can provide a stable initial placement surface for the inverted mold body 3. The sloping design of the side of the inverted mold body 3 near the inverted mold body 3 provides guidance for the automatic descent of the inverted mold body 3, ensuring that the inverted mold body 3 can smoothly slide to the predetermined position under the action of gravity.

[0035] Drive clamping:

[0036] When the drive motor 21 is started, its output end drives the bidirectional threaded rod 22 to rotate. Since the threads at both ends of the bidirectional threaded rod 22 rotate in opposite directions and are respectively threadedly connected to the symmetrically arranged first moving seat 23 and second moving seat 24, the first moving seat 23 and the second moving seat 24 will move towards the inverted mold body 3 in sync when rotating. At the same time, the first connecting rod 31 and the second connecting rod 32 at the bottom of the first moving seat 23 and the second moving seat 24 move accordingly, causing the two support plates 7 to slide in opposite directions inside the worktable 2, away from the inverted mold body 3. The bottom of the inverted mold body 3, which has lost the support of the support plates 7, first contacts the inclined surface of the support plates 7, and then slides down the inclined surface under the action of gravity until the clamping rods 6 on the first moving seat 23 and the second moving seat 24 clamp and fix it, ensuring that the inverted mold body 3 is stable and without displacement during the injection molding process.

[0037] Demolding operation:

[0038] When the injection molding process is completed, the drive motor 21 rotates in the reverse direction, causing the first moving seat 23 and the second moving seat 24 to move away from the inverted mold body 3. During this process, the first connecting rod 31 and the second connecting rod 32 drive the two support plates 7 to move closer to each other and push the inverted mold body 3 upward to the top of the workbench 2, so that the staff can quickly take out the mold, shorten the production cycle and improve production efficiency.

[0039] Adaptation and adjustment:

[0040] If different sizes of inverted mold bodies 3 need to be installed, the knob 51 on the worktable 2 can be turned to rotate the threaded rod 25. The two extrusion plates 26 on the threaded rod 25 will move accordingly, releasing the extrusion on both sides of the groove 28 of the first moving seat 23 and the second moving seat 24, thereby releasing the restriction on the threaded rod 25 on the second slide groove 27. At this time, the position of the threaded rod 25 on the first moving seat 23 and the second moving seat 24 can be flexibly adjusted, thereby changing the spacing of the clamping rods 6 to adapt to different sizes of inverted mold bodies 3. After the adjustment is completed, the knob 51 is turned again to make the extrusion plates 26 extrude the sides of the groove 28 again, and the threaded rod 25 is fixed again to ensure that the clamping rods 6 are stably positioned, so as to realize the quick replacement and precise clamping of the inverted mold body 3.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A plastic box inverted mold, characterized in that, include: The base (1) has a workbench (2) fixedly connected to the top of the base (1), and an inverted mold body (3) is installed inside the workbench (2). An injection tube (4) is fixedly connected to the top of the workbench (2), and the top of the workbench (2) has a first slide groove (5) symmetrically opened. Clamping rods (6) are symmetrically installed inside the worktable (2) for clamping the inverted mold body (3). Support plate (7), the workbench (2) is symmetrically slidably connected with support plate (7) for supporting the inverted mold body (3); The drive assembly is installed inside the worktable (2) for driving the support rod to clamp the inverted mold body (3).

2. The inverted mold for plastic boxes according to claim 1, characterized in that, The drive assembly includes: a drive motor (21), a bidirectional threaded rod (22), a first movable seat (23), a second movable seat (24), a rotating threaded rod (25), and an extrusion plate (26). The drive motor (21) is fixedly connected inside the worktable (2), and the bidirectional threaded rod (22) is rotatably connected inside the worktable (2). The output end of the drive motor (21) is fixed to one end of the bidirectional threaded rod (22). One end of the bidirectional threaded rod (22) is threadedly connected to the first movable seat (23), and the other end of the bidirectional threaded rod (22) is threaded... The first movable seat (23) and the second movable seat (24) are connected by a second sliding groove (27) at the bottom. The first movable seat (23) and the second movable seat (24) are provided with a groove (28) on one side. The first movable seat (23) and the second movable seat (24) are both equipped with a rotating threaded rod (25) through the second sliding groove (27). The outer wall of the rotating threaded rod (25) is symmetrically threaded with a pressing plate (26). The middle part of the rotating threaded rod (25) is rotatably connected to the clamping rod (6).

3. The inverted mold for plastic boxes according to claim 2, characterized in that, The bottom of the first movable seat (23) is rotatably connected to the first connecting rod (31), and the bottom of the second movable seat (24) is rotatably connected to the second connecting rod (32). The end of the first connecting rod (31) away from the first movable seat (23) is rotatably connected to the corresponding support plate (7), and the end of the second connecting rod (32) away from the second movable seat (24) is rotatably connected to the corresponding support plate (7).

4. The inverted mold for plastic boxes according to claim 2, characterized in that, The first movable seat (23) and the second movable seat (24) are symmetrically arranged.

5. The inverted mold for plastic boxes according to claim 2, characterized in that, Both of the aforementioned rotating threaded rods (25) pass through the first groove (5) and are fixedly connected to a knob (51).

6. The inverted mold for plastic boxes according to claim 1, characterized in that, Both clamping rods (6) are located above the two support plates (7) in the vertical direction.

7. The inverted mold for plastic boxes according to claim 3, characterized in that, The first connecting rod (31) and the second connecting rod (32) are offset in the vertical direction.

8. The inverted mold for plastic boxes according to claim 1, characterized in that, Both of the support plates (7) have a sloping design on the side closest to the inverted mold body (3).

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