A mold opening and closing swing arm rail device

Abstract

The utility model discloses a kind of opening and closing mould swing arm track devices, including support seat, track bottom plate, track outer side plate, track inner side plate, movable track base and movable track inner side plate, track bottom plate is located on support seat, track outer side plate and track inner side plate are fixed on track bottom plate;One end of movable track base is rotatably connected on track bottom plate, movable track inner side plate is located on movable track base, and is adjacent with track inner side plate, so that track outer side plate, track inner side plate and movable track inner side plate jointly constitute a swing arm roller movement track structure;The other end of movable track base is connected with a elastic reset mechanism, the elastic reset mechanism is installed on support seat, for exerting elastic force to movable track base to make it tend to close, and is equipped with adjusting component.This opening and closing mould swing arm track device provides continuous, smooth and bufferable guide for swing arm roller, has self-resetting function, and its reset force can be conveniently adjusted according to the needs of different moulds.

Description

Technical Field

[0001] This utility model relates to the technical field of fully automatic rotary blow molding machines, specifically to an opening and closing mold swing arm track device for a blow molding machine. Background Technology

[0002] Fully automatic rotary blow molding machines are efficient and continuous plastic container production equipment. Their core working unit consists of multiple mold units evenly distributed along a rotating platform. Each mold unit is driven by an opening and closing mechanism to achieve preform loading, mold closing, blow molding, and final product ejection. Among these opening and closing mechanisms, the swing-arm type is widely used due to its compact structure and reliable operation. This structure typically has rollers at the end of the swing arm, which precisely controls the opening and closing of the mold by running within a fixed track.

[0003] However, the swing arm tracks used in existing rotary blow molding machines are mostly integral fixed structures, and the shape and size of their track grooves cannot be changed. This structure reveals several drawbacks under high-speed, continuous rotation: First, at the moment of mold opening and closing, the swing arm rollers experience rigid impact with the fixed side of the track, resulting in significant noise and vibration, and accelerating the wear of the rollers and track themselves, affecting the equipment's lifespan and operational stability. Second, fixed tracks lack adaptability and cushioning, failing to adapt to the different dynamic requirements of different bottle shapes and mold weights, resulting in poor versatility. When changing molds, the stress state of the track cannot be adjusted, potentially leading to loose mold closing or excessive impact.

[0004] Therefore, developing a swing arm track device that can effectively buffer impacts, automatically reset, and be easily adjusted according to mold conditions is of vital importance for improving the operating speed of blow molding machines, reducing maintenance costs, extending equipment life, and enhancing adaptability to different products. Utility Model Content

[0005] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide an opening and closing mold swing arm track device for a blow molding machine. It can provide continuous, stable and buffered guidance for the swing arm roller, has an automatic reset function, and its reset force can be conveniently adjusted according to the needs of different molds. At the same time, the installation and debugging are more flexible.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A swing arm track device for opening and closing molds includes a support base, a track base plate, an outer track plate, an inner track plate, a movable track base, and a movable track inner plate. The track base plate is disposed on the support base, and the outer track plate and the inner track plate are fixed to the track base plate. One end of the movable track base is rotatably connected to the track base plate, and the movable track inner plate is disposed on the movable track base and adjacent to the inner track plate, such that the outer track plate, the inner track plate, and the movable track inner plate together form a swing arm roller motion trajectory structure. The other end of the movable track base is connected to an elastic reset mechanism, which is installed on the support base and is used to apply an elastic force to the movable track base to make it tend to close. An adjustment component is provided for adjusting the magnitude of the elastic force.

[0007] Furthermore, the elastic reset mechanism includes a tension spring, a spring shaft, and an adjustment assembly; the spring shaft is located at the other end of the movable track base; one end of the tension spring is connected to the spring shaft, and the other end is connected to the adjustment assembly; the adjustment assembly is located on the support base, and the preload of the tension spring is adjusted by changing its relative distance to the spring shaft.

[0008] Furthermore, the adjusting assembly includes a spring seat and an adjusting screw; the spring seat is fixed on the support base; the adjusting screw is threadedly engaged with the spring seat; by rotating the adjusting screw, the connecting part at its end can be moved to change the tension state of the tension spring.

[0009] Furthermore, the connecting part at the end of the adjusting screw is a pin, which is connected to the adjusting screw through a positioning block, and the axial direction of the pin is perpendicular to the axial direction of the adjusting screw.

[0010] Furthermore, the upper end of the spring shaft passes through the movable track base and is connected to a pressure cap, which is fixed to the upper surface of the movable track base; a washer is connected to the lower end of the spring shaft.

[0011] Furthermore, several pads are provided on the lower part of the track base plate.

[0012] Furthermore, the upper part of the track base plate is provided with an outer side plate assembly part that matches the outer contour of the outer side plate of the track and an inner side plate assembly part that matches the outer contour of the inner side plate of the track. The outer side plate assembly part and the inner side plate assembly part protrude from the upper surface of the track base plate.

[0013] Furthermore, the movable track base is rotatably connected to the track base plate via a rotating shaft.

[0014] Compared with existing technologies, the technical solution of this patent achieves the following beneficial effects: 1. By combining the outer and inner rail plates and the inner movable rail plate to form a swing arm roller motion trajectory structure, a continuous, complete, and precise guide path is provided for the roller at the end of the swing arm. Furthermore, by incorporating an elastic reset mechanism connected to the movable rail base, the moving part automatically and accurately returns to its initial position after being pushed open, ensuring the continuity of the motion trajectory and achieving full automation without manual intervention. This is particularly suitable for continuous high-speed operation of rotary blow molding machines.

[0015] 2. The integrated adjustment components allow operators to quickly and accurately adjust the elastic return force according to different bottle mold types and process requirements. This ensures that the moving track provides sufficient clamping force without causing excessive impact or wear due to excessive return force, greatly improving the efficiency and adaptability of mold changing in blow molding machines.

[0016] 3. The pad design enables convenient fine-tuning of the overall height of the track device, reduces the accuracy requirements of the rotating disc mounting reference surface, facilitates quick debugging, and ensures that the contact state between the track and the rollers at all workstations is consistent, thereby improving the overall stability of the equipment operation. Attached Figure Description

[0017] Figure 1 The diagram shown is a structural schematic of the opening and closing mold swing arm track device of this utility model; Figure 2 The diagram shown is a front view structural schematic of the opening and closing mold swing arm track of this utility model. Figure 3 The diagram shown is a rear view structural schematic of the opening and closing mold swing arm track of this utility model. Figure 4 The figure shown is a top view of the opening and closing mold swing arm track of this utility model. Figure 5 The diagram shown is a structural schematic of the track base plate of this utility model.

[0018] In the diagram: 1. Support base; 2. Track base plate; 3. Outer track plate; 4. Inner track plate; 5. Movable track base; 6. Inner movable track plate; 7. Spring shaft; 8. Pressure cap; 9. Washer; 10. Tension spring; 11. Spring seat; 12. Adjusting screw; 13. Positioning block; 14. Pin; 15. Pad; 16. Rotating shaft; 17. Positioning post; 21. Outer plate assembly; 22. Inner plate assembly. Detailed Implementation

[0019] 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.

[0020] See Figure 1-5 As shown, this embodiment provides an opening and closing mold swing arm track device, including a support base 1, a track base plate 2, an outer track plate 3, an inner track plate 4, a movable track base 5, and a movable track inner plate 6. The track base plate 2 is mounted on the support base 1, and the outer track plate 3 and the inner track plate 4 are fixed to the track base plate 2. One end of the movable track base 5 is rotatably connected to the track base plate 2, and the movable track inner plate 6 is mounted on the movable track base 5 and adjacent to the inner track plate 4, so that the outer track plate 3, the inner track plate 4, and the movable track inner plate 6 together form a swing arm roller motion trajectory structure. The other end of the movable track base 5 is connected to an elastic reset mechanism, which is mounted on the support base 1 and is used to apply an elastic force to the movable track base 5 to make it tend to close, and is provided with an adjustment component for adjusting the magnitude of the elastic force. By having the outer track plate 3, the inner track plate 4, and the movable track inner plate 6 together form a swing arm roller motion trajectory structure, a continuous, complete, and precise guide path is provided for the roller at the end of the swing arm. By incorporating an elastic reset mechanism connected to the movable track base 5, the movable part can automatically and accurately return to its initial position after being pushed open, ensuring the continuity of the motion trajectory and achieving full automation without manual intervention. Integrated adjustment components allow for convenient adjustment of the elastic reset force according to different mold or process requirements. This ensures reliable reset of the movable track without excessive wear or impact due to excessive reset force, significantly improving the device's versatility and adaptability to various production needs.

[0021] The elastic reset mechanism includes a tension spring 10, a spring shaft 7, and an adjusting assembly. The spring shaft 7 is located at the other end of the movable track base 5. One end of the tension spring 10 is connected to the spring shaft 7, and the other end is connected to the adjusting assembly. The adjusting assembly is located on the support base 1, and the preload of the tension spring 10 is adjusted by changing its relative distance to the spring shaft 7. By using the tension spring 10 as an elastic element and connecting it to the movable track base via the spring shaft 7, a highly efficient force application mechanism is formed.

[0022] The adjustment assembly includes a spring seat 11 and an adjusting screw 12. The spring seat 11 is fixed to the support base 1. The adjusting screw 12 is threadedly engaged with the spring seat 11. By rotating the adjusting screw 12, the connecting part at its end can be moved to change the tension state of the tension spring 10. By using the threaded engagement between the adjusting screw 12 and the spring seat 11, the connecting part at its end can be moved by rotating the screw. The threaded drive itself has precise displacement control capabilities, enabling fine and stepless adjustment of the tension length of the tension spring 10, thereby achieving precise control of the restoring force.

[0023] The connecting part at the end of the adjusting screw 12 is a pin 14. The pin 14 is connected to the adjusting screw 12 through a positioning block 13, and the axial direction of the pin 14 is perpendicular to the axial direction of the adjusting screw 12. The positioning block 13 securely connects the pin 14 and the adjusting screw 12 together, forming a rigid connection node that can withstand tensile forces, ensuring the reliability and consistency of force transmission.

[0024] The upper end of the spring shaft 7 passes through the movable track base 5 and is connected to a pressure cover 8, which is fixed to the upper surface of the movable track base 5; a washer 9 is connected to the lower end of the spring shaft 7. The spring shaft 7 rotates together with the movable track base 5 through its connection with the pressure cover 8, and the washer 9 is used to prevent the tension spring 10 from falling off the spring shaft 7.

[0025] Several pads 15 are provided at the bottom of the track base plate 2, and are connected to the support base 1 through the pads 15. The pads 15 form a height-adjustable installation interface between the support base 1 and the track base plate 2. This allows for easy adjustment of the absolute height of the entire track device during on-site installation and commissioning, ensuring optimal contact between the swing arm rollers and the track surface, greatly improving the equipment's compatibility with different installation environments and installation convenience.

[0026] The upper part of the track base plate 2 is provided with an outer side plate assembly part 21 that matches the outer contour of the outer side plate 3 and an inner side plate assembly part 22 that matches the outer contour of the inner side plate 4. The outer side plate assembly part 21 and the inner side plate assembly part 22 protrude from the upper surface of the track base plate 2. A positioning post 17 is provided between the track base plate 2 and the outer side plate 3 and the inner side plate 4. The outer side plate assembly part 21, the inner side plate assembly part 22, and the positioning post 17 protruding from the upper surface of the track base plate 2 constitute a positioning structure that matches the outer contour of the track plate. During assembly, the worker only needs to place the track plate into the corresponding assembly part to automatically complete the precise positioning, which greatly reduces the alignment difficulty and the skill requirements, and improves the assembly efficiency and consistency of accuracy.

[0027] The movable track base 5 is rotatably connected to the track base plate 2 via a rotating shaft 16. The rotating shaft 16 ensures that the movable track base 5 rotates strictly around a fixed axis, avoiding shaking and jamming, and minimizing frictional resistance, thereby ensuring the accuracy and repeatability of the movement trajectory of the inner side plate 6 of the movable track during opening and closing.

[0028] The working principle of this novel mold opening and closing swing arm track device is as follows: When the blow molding machine's rotating disc rotates, driving the roller at the end of the swing arm to move along the track to the area where the inner side plate 6 of the movable track is located, the roller will exert an outward pushing force on the inner side plate 6 of the movable track, overcoming the tension of the tension spring 10, and driving the movable track base 5 to rotate outward (counterclockwise) around the rotating shaft 16. After the roller has completely passed through this area, the movable track base 5, under the action of the elastic restoring force of the tension spring 10, automatically rotates inward (clockwise), quickly and accurately returning to the initial position. The inner side plate 6 of the movable track smoothly engages with the fixed inner side plate 4 of the track, ensuring the continuity of the roller's trajectory in the next cycle. When changing the bottle type or mold, and needing to adjust the magnitude of the reset force, simply rotate the adjusting screw 12 to increase or decrease the tension of the tension spring 10, thereby changing the reset force to suit different clamping force occasions and precisely match the production process requirements of different products.

Claims

1. A mold opening and closing swing arm rail device comprising a support base (1), a rail bottom plate (2), a rail outer side plate (3), a rail inner side plate (4), a movable rail base (5), and a movable rail inner side plate (6), characterized in that, The track base plate (2) is mounted on the support base (1), and the outer track plate (3) and the inner track plate (4) are fixed on the track base plate (2). One end of the movable track base (5) is rotatably connected to the track base plate (2), and the movable track inner plate (6) is mounted on the movable track base (5) and adjacent to the inner track plate (4), so that the outer track plate (3), the inner track plate (4) and the movable track inner plate (6) together form a swing arm roller motion trajectory structure. The other end of the movable track base (5) is connected to an elastic reset mechanism, which is mounted on the support base (1) and is used to apply an elastic force to the movable track base (5) to make it tend to close, and is provided with an adjustment component for adjusting the magnitude of the elastic force.

2. The swing arm track apparatus according to claim 1, wherein, The elastic reset mechanism includes a tension spring (10), a spring shaft (7), and an adjustment assembly; the spring shaft (7) is located at the other end of the movable track base (5); one end of the tension spring (10) is connected to the spring shaft (7), and the other end is connected to the adjustment assembly; the adjustment assembly is located on the support base (1), and the preload of the tension spring (10) is adjusted by changing its relative distance to the spring shaft (7).

3. The opening and closing mold swing arm track device according to claim 2, characterized in that, The adjustment assembly includes a spring seat (11) and an adjusting screw (12); the spring seat (11) is fixed on the support seat (1); the adjusting screw (12) is threadedly engaged with the spring seat (11); by rotating the adjusting screw (12), the connecting part at its end can be driven to move, so as to change the tension state of the tension spring (10).

4. The opening and closing mold swing arm track device according to claim 3, characterized in that, The connecting part at the end of the adjusting screw (12) is a pin (14). The pin (14) is connected to the adjusting screw (12) through a positioning block (13), and the axial direction of the pin (14) is perpendicular to the axial direction of the adjusting screw (12).

5. The opening and closing mold swing arm track device according to claim 2, characterized in that, The upper end of the spring shaft (7) passes through the movable track base (5) and is connected to a pressure cap (8), which is fixed to the upper surface of the movable track base (5); a washer (9) is connected to the lower end of the spring shaft (7).

6. The opening and closing mold swing arm track device according to claim 1, characterized in that, The track base plate (2) is provided with several pads (15) at the bottom.

7. The opening and closing mold swing arm track device according to claim 1, characterized in that, The upper part of the track base plate (2) is provided with an outer plate assembly part (21) that matches the outer contour of the outer plate (3) and an inner plate assembly part (22) that matches the outer contour of the inner plate (4). The outer plate assembly part (21) and the inner plate assembly part (22) protrude from the upper surface of the track base plate (2).

8. The opening and closing mold swing arm track device according to claim 1, characterized in that, The movable track base (5) is rotatably connected to the track base plate (2) via a rotating shaft (16).

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