A four-post lift transmission assembly

Abstract

This utility model provides a four-post lifting transmission assembly, relating to the field of transmission device technology. It includes a lifting power assembly connected to an eccentric steering component, which in turn is connected to a transmission component, which is further connected to the lifting component. The lifting power assembly drives the eccentric steering component to rotate. The advantages of this utility model are that the degree and position of eccentricity of the eccentric steering component are adjustable. By adjusting the position of the eccentric adjustment block on the steering wheel frame, the raising or lowering of the lifting shaft can be controlled when the eccentric steering component rotates to different angles. By replacing eccentric adjustment blocks of different sizes, the highest and lowest points of the lifting shaft can be quickly adjusted, thus flexibly controlling the lifting height of the shaft. This method of coordination greatly reduces the dependence on the operator's skill level during the installation and debugging of the transmission assembly, making the installation and debugging work easier.

Description

Technical Field

[0001] The utility model relates to the field of transmission device technology, and in particular to a four-column lifting transmission assembly. Background Technology

[0002] The four-column lifting structure of screen printing machines is widely used in screen frame lifting operations. Traditional four-column lifting structures primarily rely on a servo motor connected to a cross-shaped steering table, and then on connecting rods and lead screws to achieve the screen frame lifting function. While this structure ensures stable lifting of the screen frame, its difficulty in height adjustment poses a significant challenge for maintenance personnel. Because the lead screw and connecting rod are rigid components, their physical characteristics limit their flexibility. When fine adjustments to the height of the four sides of the screen frame are needed, these rigid components are difficult to adjust even slightly, making height adjustment work very challenging. Therefore, experienced technicians often need to spend considerable time and effort, repeatedly trying and adjusting, to achieve a level screen frame. This not only reduces equipment debugging efficiency but also increases labor costs. For companies or regions with relatively weak technical capabilities, it is difficult to quickly master equipment debugging techniques. When equipment malfunctions, its complex structure and reliance on technician experience make troubleshooting and repair extremely difficult.

[0003] The technical content disclosed in Chinese patent document (publication number: CN106240149B, patent name: a four-column lifting structure for a screen printing machine frame) is as follows: a four-column lifting structure for a screen printing machine frame, including a servo motor, a cross-shaped steering gear on one side of the servo motor, and first transmission rods on both sides of the cross-shaped steering gear. One end of the first transmission rod is geared to a first cross-shaped steering platform, and one side of the first cross-shaped steering platform is geared to a second transmission rod. One end of the second transmission rod is connected to a second cross-shaped steering platform. The bottom of both the first and second cross-shaped steering platforms is provided with a base, and the top of both is provided with a ball screw electric cylinder. A tensioning coupling is provided between the ball screw electric cylinder and the first and second cross-shaped steering platforms. A screen frame is provided on the top of the ball screw electric cylinder, and a gravity sensor is provided on one side of the bottom of the screen frame. A control device is provided on the other side of the servo motor.

[0004] According to the above document, the four-column lifting structure of the mesh frame may still face difficulties in adjusting and leveling the height of the four sides of the mesh frame due to the use of rigid components such as lead screws. This may also result in a serious reliance on technology. Utility Model Content

[0005] This utility model overcomes the shortcomings of existing technologies and provides a four-column lifting transmission assembly. The cooperation between the eccentric steering component and the transmission belt makes the adjustment of each component more flexible. The degree and position of eccentricity of the eccentric steering component are adjustable. By adjusting the position of the eccentric adjustment block on the steering wheel frame, the raising or lowering of the lifting shaft can be controlled when the eccentric steering component rotates to different angles. By replacing the eccentric adjustment blocks of different sizes, the highest point of the lifting shaft and the lowest point of the lowering shaft can be quickly adjusted, thereby flexibly controlling the lifting height of the lifting shaft. When installing and debugging the transmission assembly, this cooperation method greatly reduces the dependence on the operator's technical level, making the installation and debugging work easier to carry out.

[0006] To solve the above-mentioned technical problems, the utility model is implemented through the following technical solution:

[0007] A four-post lifting transmission assembly includes a lifting power component, which is connected to an eccentric steering component, which is connected to a transmission component, and the transmission component is connected to the lifting component.

[0008] The lifting power assembly is used to drive the eccentric steering component to rotate;

[0009] The transmission component includes a transmission belt, and the lifting component includes a lifting optical shaft that is slidably inserted into the lifting base. The two ends of the transmission belt are respectively connected to the bottom ends of the two lifting optical shafts.

[0010] The eccentric steering component is located in the middle of the transmission belt. When the eccentric steering component rotates, the two ends of the transmission belt are pulled because the position of the transmission belt tangent to the outer ring of the eccentric steering component changes, thereby causing the two lifting optical shafts to rise or fall simultaneously.

[0011] Furthermore, a positioning cylinder is also provided on the side of the lifting component. When the lifting optical axis is fixed in a certain position, the output end of the positioning cylinder abuts against the side of the lifting optical axis, so that the lifting optical axis will not slide down due to gravity.

[0012] Furthermore, the transmission component also includes a first pulley and a second pulley, with both ends of the transmission belt passing over the first pulley and the second pulley respectively, before finally connecting to the bottom end of the lifting optical shaft;

[0013] The outer surface of the transmission belt is provided with anti-slip texture to increase the friction between the transmission belt and the first pulley, the second pulley and the eccentric steering component.

[0014] Furthermore, the eccentric steering component includes a steering wheel frame, which is connected to an eccentric adjustment block, which is detachably mounted on the circumferential direction of the steering wheel frame.

[0015] Furthermore, an auxiliary support block is also fitted into the middle of the eccentric adjustment block.

[0016] Furthermore, a locking inner frame is provided at the center of the steering wheel frame, and a locking bolt is connected to the locking inner frame. The tightness of the connection between the locking inner frame and the drive shaft is adjusted by setting the depth to which the locking bolt is screwed into the locking inner frame.

[0017] Furthermore, the lifting power assembly includes a lifting motor, which is connected to a drive shaft via a motor drive belt.

[0018] Furthermore, both ends of the active rotating shaft are connected to eccentric steering components.

[0019] Furthermore, the lifting base is provided with a lubrication channel inside, and the lubrication channel is connected to the sliding surface of the lifting optical shaft.

[0020] Compared with existing technologies, the advantages of this utility model are:

[0021] 1. Compared to the rigid transmission components used in traditional four-column lifting transmissions, the combination of the eccentric steering component and the transmission belt allows for more flexible adjustment of each component. The degree and position of eccentricity of the eccentric steering component are adjustable. By adjusting the position of the eccentric adjustment block on the steering wheel frame, the raising or lowering of the lifting shaft can be controlled when the eccentric steering component rotates to different angles. By replacing the eccentric adjustment blocks of different sizes, the highest and lowest points of the lifting shaft can be quickly adjusted, thereby flexibly controlling the lifting height of the lifting shaft. When installing and debugging the transmission components, this combination method greatly reduces the dependence on the operator's technical level, making the installation and debugging work easier to carry out.

[0022] 2. The two ends of the transmission belt are connected to the bottom ends of the two lifting optical shafts respectively, ensuring that the lifting optical shafts move synchronously at both ends and avoiding tilting or jamming. One eccentric steering component can drive two lifting optical shafts, and two eccentric steering components can drive four lifting optical shafts to move up and down synchronously, ensuring the synchronicity of the overall movement. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the utility model and, together with the embodiments of the utility model, are used to explain the utility model. They do not constitute a limitation on the utility model. In the drawings:

[0024] Figure 1 This is a schematic diagram of the four-column lifting transmission assembly structure according to an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the lifting power component structure according to an embodiment of the present utility model;

[0026] Figure 3This is a schematic diagram of the transmission component and lifting component according to an embodiment of the present utility model;

[0027] Figure 4 This is an exploded view of the eccentric steering component according to an embodiment of the present invention.

[0028] In the diagram: 1. Lifting power assembly; 101. Lifting motor; 102. Motor drive belt; 103. Drive shaft; 2. Eccentric steering component; 201. Steering wheel frame; 202. Tightening inner frame; 203. Eccentric adjustment block; 2031. Auxiliary support block; 3. Transmission component; 301. Transmission belt; 302. First pulley; 303. Second pulley; 4. Lifting component; 401. Lifting base; 402. Lifting optical shaft; 5. Positioning cylinder. Detailed Implementation

[0029] The preferred embodiments of the utility model are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the utility model.

[0030] like Figures 1 to 4 As shown, a four-post lifting transmission assembly includes a lifting power component 1, which is connected to an eccentric steering component 2. The eccentric steering component 2 is connected to a transmission component 3, and the transmission component 3 is connected to a lifting component 4.

[0031] The lifting power assembly 1 is used to drive the eccentric steering component 2 to rotate; the eccentric steering component 2 receives the rotational power from the lifting power assembly 1, and changes the distance of the tension on the transmission belt 301 through the eccentric structure, thereby driving the lifting optical shaft 402 to move. The transmission belt 301 converts the rotational motion of the eccentric steering component 2 into the linear displacement of the lifting optical shaft 402. The transmission component 3 includes a transmission belt 301, and the lifting component 4 includes a lifting optical shaft 402 slidably inserted into the lifting base 401. The lifting base 401 provides a stable guide track for the lifting optical shaft 402. Both ends of the transmission belt 301 are connected to the bottom ends of the two lifting optical shafts 402 respectively, ensuring synchronous movement of the two lifting optical shafts 402 and preventing tilting or jamming. The eccentric steering component 2 is located in the middle of the transmission belt 301. When the eccentric steering component 2 rotates, both ends of the transmission belt 301 are pulled due to the change in the tangent position between the transmission belt 301 and the outer ring of the eccentric steering component 2, thereby causing the two lifting optical shafts 402 to rise or fall simultaneously. Compared to the traditional four-column lifting transmission using rigid transmission components, this method uses the transmission belt 301 and the eccentric steering component 2 for transmission, making the adjustment of each component more flexible. In this embodiment, the degree and position of eccentricity of the eccentric steering component 2 are adjustable. By adjusting the eccentric steering component 2, the lifting height of the two lifting optical shafts 402 can be flexibly controlled. Furthermore, compared to rigid linkages or gear drives, belt drives have a buffering effect against impact forces, effectively reducing wear on components. At the same time, they significantly reduce the reliance on operator skill levels during installation and commissioning of transmission components, and make subsequent maintenance processes more convenient and efficient.

[0032] A positioning cylinder 5 is also provided on the side of the lifting component 4. When the lifting optical shaft 402 is fixed in one position, the output end of the positioning cylinder 5 abuts against the side of the lifting optical shaft 402, so that the lifting optical shaft 402 will not slide down due to gravity. This further ensures the stability of the four-column lifting transmission component. When the mesh frame is clamped at the upper end of the lifting optical shaft 402, and the scraper scrapes the pigment inside the mesh frame, the mesh frame will be subjected to pressure from the scraper. At this time, the positioning cylinder 5 makes the positioning of the lifting optical shaft 402 more stable and also avoids the transmission belt 301 from being subjected to a large pulling force when the scraper applies pressure to the mesh frame. Therefore, the transmission belt 301 is more durable.

[0033] The transmission component 3 also includes a first pulley 302 and a second pulley 303. The two ends of the transmission belt 301 pass over the first pulley 302 and the second pulley 303 respectively, and finally connect to the bottom end of the lifting optical shaft 402. The outer surface of the transmission belt 301 is provided with anti-slip texture to increase the friction between the transmission belt 301 and the first pulley 302, the second pulley 303 and the eccentric steering component 2.

[0034] The eccentric steering component 2 includes a steering wheel frame 201, which is connected to an eccentric adjustment block 203. The eccentric adjustment block 203 is detachably installed in the circumferential direction of the steering wheel frame 201. By adjusting the position of the eccentric adjustment block 203 on the steering wheel frame 201, the lifting optical shaft 402 can be raised when the eccentric steering component 2 rotates to a certain angle, and lowered when rotated to another angle. By replacing the eccentric adjustment blocks 203 of different sizes, the diameter at the maximum outer diameter of the steering wheel frame 201 can be adjusted, thereby quickly adjusting the highest point of the lifting optical shaft 402 and the lowest point of the lowering.

[0035] An auxiliary support block 2031 is also fitted into the middle of the eccentric adjustment block 203. The auxiliary support block 2031 makes the contact surface between the transmission belt 301 and the eccentric steering component 2 larger, and improves the stability of the transmission.

[0036] The steering wheel frame 201 has a locking inner frame 202 at its center. The locking inner frame 202 is connected to a locking bolt. The tightness of the connection between the locking inner frame 202 and the drive shaft 103 is adjusted by setting the depth to which the locking bolt is screwed into the locking inner frame 202.

[0037] The lifting power assembly 1 includes a lifting motor 101, which is connected to a drive shaft 103 via a motor drive belt 102. Both ends of the drive shaft 103 are connected to eccentric steering components 2. One eccentric steering component 2 can drive two lifting optical shafts 402 to lift. Therefore, two eccentric steering components 2 can drive four lifting optical shafts 402 to lift. Only one lifting motor 101 is needed to drive the four lifting optical shafts 402, thus ensuring the synchronicity of the lifting of the four lifting optical shafts 402.

[0038] The lifting base 401 has a lubrication channel inside, which is connected to the sliding surface of the lifting optical shaft 402, making the lifting of the lifting optical shaft 402 smoother.

[0039] When the transmission assembly is in operation, the eccentric steering component 2 receives the rotational power from the lifting power component 1. An eccentric adjustment block 203 is installed circumferentially on the steering wheel frame 201 of the eccentric steering component 2, and its eccentric structure changes the distance of tension on the transmission belt 301. The two ends of the transmission belt 301 pass over the first pulley 302 and the second pulley 303 respectively, and are connected to the bottom end of the lifting optical shaft 402. When the eccentric steering component 2 rotates, the position where the transmission belt 301 is tangent to the outer ring of the eccentric steering component 2 changes, thereby pulling the two ends of the transmission belt 301. The transmission belt 301 converts the rotational motion of the eccentric steering component 2 into linear displacement of the lifting optical shaft 402, causing the two lifting optical shafts 402 to rise or fall simultaneously. Because one eccentric steering component 2 can drive two lifting optical shafts 402, two eccentric steering components 2 can drive four lifting optical shafts 402 to rise and fall synchronously. The lifting optical shaft 402 is slidably inserted into the lifting base 401. The lifting base 401 provides a stable guide track for the lifting optical shaft 402 to ensure its linear movement. When the lifting optical shaft 402 is fixed in one position, the output end of the positioning cylinder 5 extends and abuts against the side of the lifting optical shaft 402 to prevent the lifting optical shaft 402 from sliding down due to gravity and to ensure the stability of the four-column lifting transmission assembly. When the screen frame is clamped at the upper end of the lifting optical shaft 402 and the scraper scrapes the pigment in the screen frame, the positioning cylinder 5 can make the positioning of the lifting optical shaft 402 more stable, avoid the scraper pressure from causing the transmission belt 301 to be subjected to a large pulling force, and extend the service life of the transmission belt 301.

[0040] Finally, it should be noted that the above are merely preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A four-column lifting transmission assembly, characterized in that, It includes a lifting power assembly (1), which is connected to an eccentric steering component (2), which is connected to a transmission component (3), and the transmission component (3) is connected to a lifting component (4). The lifting power assembly (1) is used to drive the eccentric steering component (2) to rotate; The transmission component (3) includes a transmission belt (301), and the lifting component (4) includes a lifting optical shaft (402) that is slidably inserted into the lifting base (401). The two ends of the transmission belt (301) are respectively connected to the bottom ends of the two lifting optical shafts (402). The eccentric steering component (2) is located in the middle of the transmission belt (301). When the eccentric steering component (2) rotates, the two ends of the transmission belt (301) are pulled because the position of the transmission belt (301) and the outer ring of the eccentric steering component (2) changes, thereby causing the two lifting optical shafts (402) to rise or fall at the same time.

2. The four-column lifting transmission assembly according to claim 1, characterized in that, The lifting component (4) is also provided with a positioning cylinder (5) on its side. When the lifting optical shaft (402) is fixed in a certain position, the output end of the positioning cylinder (5) abuts against the side of the lifting optical shaft (402) so that the lifting optical shaft (402) will not slide down due to gravity.

3. The four-column lifting transmission assembly according to claim 2, characterized in that, The transmission component (3) also includes a first pulley (302) and a second pulley (303). The two ends of the transmission belt (301) pass over the first pulley (302) and the second pulley (303) respectively, and finally connect to the bottom end of the lifting optical shaft (402). The outer surface of the transmission belt (301) is provided with anti-slip texture to increase the friction between the transmission belt (301) and the first pulley (302), the second pulley (303) and the eccentric steering component (2).

4. The four-post lifting transmission assembly according to any one of claims 1 to 3, characterized in that, The eccentric steering component (2) includes a steering wheel frame (201), which is connected to an eccentric adjustment block (203). The eccentric adjustment block (203) is detachably installed on the circumferential direction of the steering wheel frame (201).

5. The four-post lifting transmission assembly according to claim 4, characterized in that, An auxiliary support block (2031) is also fitted into the middle of the eccentric adjustment block (203).

6. The four-post lifting transmission assembly according to claim 5, characterized in that, The steering wheel frame (201) is provided with a locking inner frame (202) at its center. The locking inner frame (202) is connected to a locking bolt. The tightness of the connection between the locking inner frame (202) and the drive shaft (103) is adjusted by setting the depth of the locking bolt into the locking inner frame (202).

7. The four-post lifting transmission assembly according to claim 6, characterized in that, The lifting power assembly (1) includes a lifting motor (101), which is connected to the drive shaft (103) via a motor drive belt (102).

8. The four-post lifting transmission assembly according to claim 7, characterized in that, Both ends of the active rotating shaft (103) are connected to eccentric steering components (2).

9. The four-post lifting transmission assembly according to claim 8, characterized in that, The lifting base (401) is provided with a lubrication channel inside, and the lubrication channel is connected to the sliding surface of the lifting optical shaft (402).

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