A cross-cut knife assembly and packaging machine
By introducing a limiting component and a servo motor-driven cutter into the cardboard cross-cutting machine, the problem of cardboard deviation during the cutting process is solved, achieving stable cardboard feeding and accurate cutting, and improving cutting quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN GALAXY PACKAGING PRINTING PRODUCTS CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-21
AI Technical Summary
In existing cardboard cross-cutting machines, the cardboard is prone to shifting during the cutting process, resulting in uneven cut lines and affecting the cutting quality.
The system employs a limiting assembly, including a conveyor belt, a limiting assembly, a rotating structure, and a servo motor. By adjusting the height of the rotating structure and the lifting block, the system ensures that the cardboard is fed in a straight line. The system also utilizes the cooperation of the pressure roller and the tension spring to prevent the cardboard from shifting. Simultaneously, the servo motor drives the cutter for cutting.
It achieves stable feeding and accurate cutting of cardboard during the cutting process, ensuring straight cuts and improving the quality and consistency of cardboard cutting.
Smart Images
Figure CN224528148U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cardboard box production and processing technology, specifically, it relates to a cross-cutting machine for paper packaging boxes. Background Technology
[0002] The paper packaging box cross-cutting unit is an important piece of equipment in the carton processing production line, mainly used to cut cardboard into packaging boxes of specific sizes.
[0003] The prior art discloses a cardboard cross-cutting mechanism (CN215471482U), which relates to the field of cardboard cross-cutting machines. It includes a cross-cutting machine worktable, an active rotating shaft on the top of the worktable, two fixed support blocks symmetrically fixedly installed on the top of the worktable, a linkage groove on the side of the two fixed support blocks that are far apart from each other, and mounting holes on the inner wall of the side of the two linkage grooves that are close to each other. Mounting sliders are slidably installed in the two mounting holes, and the same support crossbar is fixedly installed between the two mounting sliders. A pressure plate is fixedly installed at the bottom of the support crossbar.
[0004] Existing technology sets up pressure plates and other structures on the worktable of the cross-cutting machine so that the pressure plates intermittently press the cardboard downwards during the operation of the worktable, thus fixing the cardboard before cutting. Existing technology considers the cardboard shaking but does not consider the technical problem that the cardboard may shift on both sides. If the cardboard is long, it may shift due to the conveying process before it is fixed, resulting in uneven cut lines and the cardboard being unusable.
[0005] In view of this, this utility model is hereby proposed. Utility Model Content
[0006] To solve the technical problem of uneven cut lines in the cut cardboard mentioned above, the basic concept of the technical solution adopted by this utility model is: a cross-cutting blade assembly, including a conveyor belt, which is set above the ground; The limiting component is located above the conveyor belt. Above the conveyor belt, there are two long boxes that are close to each other according to the width of the packaging box. Several sets of rotating structures are provided on one side of the long box. Above the long box, there is a long rod that can adjust the height. Several sets of rotating structures are provided on one side of the long rod.
[0007] In a preferred embodiment of this utility model, the rotating structure includes a U-shaped block and a rotating wheel. A rotating wheel is provided in the middle of each U-shaped block, and the two ends of the rotating wheel are rotatably connected to the two ends of the U-shaped block. One side of the long rod is fixedly connected to one side of each rotating wheel, and one side of the long box is fixedly connected to one side of each rotating wheel.
[0008] In a preferred embodiment of this utility model, the limiting component further includes a sliding groove, a lifting block, and bolts. Two shrink boxes are fixedly installed inside the cavity of the long box, and a lifting block is installed in each of the two shrink boxes. The lifting blocks are slidably connected to the shrink boxes. Several sliding grooves are opened inside the cavity of the long box, and multiple ends of the long rod are slidably connected to one sliding groove. Several threaded holes are opened on one side of the two lifting blocks, and two bolts are installed on one side of the long box. The bolts are threadedly connected to the threaded holes.
[0009] In a preferred embodiment of this utility model, the limiting component further includes a first bracket, a first servo motor, a double-ended lead screw, a square groove, and moving plates. The first bracket is fixed on the top surface of the conveyor belt. A square groove is formed in the bottom middle of the first bracket. The double-ended lead screw is disposed in the cavity of the square groove and is rotatably connected to both sides of the cavity of the square groove. The two moving plates are threadedly connected to both ends of the double-ended lead screw. The two moving plates are adapted to the square groove. The other end of each of the two moving plates is fixedly connected to the top surface of a long box. The first servo motor is fixed on one side of the first bracket, and its rotating shaft is fixedly connected to one end of the double-ended lead screw through a coupling.
[0010] In a preferred embodiment of this utility model, a base is provided on one side of the conveyor belt, a conveying roller is provided in the middle of the base, the two ends of the conveying roller are rotatably connected to the two sides of the base, a movable groove is provided on each side of the base, a tension spring is provided in each of the two movable grooves, one end of the two tension springs is fixedly connected to the top surface of the movable groove, one end of the two pressure rollers is adapted to the movable groove and is slidably connected to the movable groove, and the other end of the two tension springs is fixedly connected to one end of the pressure roller.
[0011] In a preferred embodiment of this utility model, each end of the lower pressure roller is provided with a square block and is fixedly connected to the square block. A telescopic rod is fixedly provided on the top surface of the two square blocks. A connecting strip and a fixing block are provided above each of the two telescopic rods. Each of the two telescopic rods is slidably connected to a connecting strip. One end of each of the two connecting strips is fixedly connected to a fixing block. A pin is provided on the wall surface of each of the two connecting strips. The connecting strip and the telescopic rod are fixed by the pin. Several insertion holes are opened on the wall surface of the telescopic rod.
[0012] In a preferred embodiment of this utility model, a third servo motor, a cam, a second bracket, and a rotating rod are fixedly mounted on the top surface of the base. A second bracket is fixedly mounted on the top surface of the base. The two ends of the rotating rod are rotatably connected to the two sides of the second bracket. An eccentric shaft is provided at the end of the cam. The rotating rod passes through the two cams from the position of the eccentric shaft and is fixedly connected to the two cams. A connecting block is provided at the other end of each of the two cams. Each of the two connecting blocks is rotatably connected to one of the cams. A cutter is provided below the two connecting blocks and is fixedly connected to the top surface of the cutter. The third servo motor is fixedly mounted on one side of the second bracket. The rotating shaft of the third servo motor is fixedly connected to one end of the rotating rod through a coupling. A second servo motor is fixedly mounted on one side of the base. The rotating shaft of the second servo motor is fixedly connected to one side of the conveying roller through a coupling.
[0013] A packaging machine includes a packaging machine body, the packaging machine body is provided with all the above-mentioned cross-cutting knife assemblies, the machine body is located on one side of a base (7), a conveyor belt is provided at the bottom end of one side of the machine body, a placement mechanism is provided at the top of the inner side of the machine body, the placement mechanism includes a drive motor, a support roller and a conveyor belt, and the inner side of the machine body is rotatably connected to the support roller through a bearing.
[0014] Compared with the prior art, the present invention has the following advantages: 1. Two sets of opposing rotating structures approach each other, with two sets of rollers close to the edge of the cardboard. As the cardboard is continuously conveyed, all rollers rotate to ensure that the cardboard is conveyed in a straight line. Depending on the thickness of the cardboard, turn the bolts to adjust the height of the four lifting blocks, and then screw the bolts into the corresponding threaded holes. The rollers of the two sets of rotating structures on the upper side limit the top of the cardboard. When the cardboard moves, the rollers rotate while limiting the movement, which can ensure that the cardboard does not deviate and the tangent is relatively straight.
[0015] 2. Pull out the two pins according to the thickness of the cardboard and insert them into the corresponding holes so that the lower pressure roller is close to the cardboard but does not restrict its movement. The tension of the spring ensures that the concave and convex parts of the cardboard at different positions can be limited. When the cardboard is moved by the conveyor roller, the middle part of the lower pressure roller is rotated.
[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0017] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the limiting component of this utility model; Figure 3 This is a partial schematic diagram of the limiting component of this utility model; Figure 4 This is a schematic diagram of the conveyor roller of this utility model; Figure 5 This is a schematic diagram of the cutting tool of this utility model.
[0018] In the diagram: 1. Conveyor belt; 2. First support; 3. Long rod; 4. U-shaped block; 5. Rotary wheel; 6. First servo motor; 7. Base; 8. Lower pressure roller; 9. Conveying roller; 10. Moving groove; 11. Connecting bar; 12. Fixing block; 13. Telescopic rod; 14. Square block; 15. Second servo motor; 16. Third servo motor; 17. Cam; 18. Second support; 19. Rotating rod; 20. Double-ended lead screw; 21. Square groove; 22. Moving plate; 23. Slide groove; 24. Lifting block; 25. Bolt; 26. Long box; 27. Tension spring; 28. Cutting tool; 29. Connecting block. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0020] A cross-cutting blade assembly and a packaging machine, such as Figure 1 , Figure 2 and Figure 3As shown, a limiting component is installed above the conveyor belt 1. Above the conveyor belt 1, two long boxes 26 are positioned close to each other according to the width of the packaging carton. Several sets of rotating structures are provided on one side of each long box 26. A height-adjustable long rod 3 is installed above the long box 26. Several sets of rotating structures are also provided on one side of the long rod 3. The rotating structures include U-shaped blocks 4 and rotating wheels 5. A rotating wheel 5 is located in the middle of each U-shaped block 4, and both ends of the rotating wheel 5 are rotatably connected to both ends of the U-shaped block 4. One side of the long rod 3 is fixedly connected to one side of each rotating wheel 5, and one side of the long box 26 is fixedly connected to one side of each rotating wheel 5. The limiting component also includes a sliding groove 23, a lifting block 24, and bolts 25. Two shrink boxes are fixedly installed inside the cavity of the long box 26. Each shrink box contains a lifting block 24, which is slidably connected to the shrink box. Several sliding grooves 23 are provided inside the cavity of the long box 26. Multiple ends of the long rod 3... Each is slidably connected to a slide groove 23. Several threaded holes are opened on one side of the two lifting blocks 24. Two bolts 25 are provided on one side of the long box 26. The bolts 25 are threadedly connected to the threaded holes. The limiting assembly also includes a first bracket 2, a first servo motor 6, a double-ended lead screw 20, a square groove 21 and a moving plate 22. The first bracket 2 is fixed on the top surface of the conveyor belt 1. A square groove 21 is opened on the bottom surface of the middle part of the first bracket 2. The double-ended lead screw 20 is set in the cavity of the square groove 21 and is rotatably connected to both sides of the cavity of the square groove 21. The two moving plates 22 are threadedly connected to both ends of the double-ended lead screw 20. The two moving plates 22 are adapted to the square groove 21. The other end of the two moving plates 22 is fixedly connected to the top surface of a long box 26. The two long boxes 26 are set on both sides of the conveyor belt 1. The first servo motor 6 is fixed on one side of the first bracket 2 and its rotating shaft is fixedly connected to one end of the double-ended lead screw 20 through a coupling.
[0021] A controller is installed on one side of the conveyor belt 1. The conveyor belt 1 is electrically connected to the controller. When the controller turns on the power of the conveyor belt 1, the conveyor belt 1 transports the cardboard. According to the width and thickness of the cardboard, the power of the first servo motor 6 is turned on first. The first servo motor 6 drives the double-headed lead screw 20 to rotate. The two moving plates 22 drive the two long boxes 26 to move closer to each other. The two sets of opposing rotating structures move closer to each other. The two sets of rotating wheels 5 are close to the edge of the cardboard. While the cardboard is being transported continuously, all the rotating wheels 5 rotate to ensure that the cardboard is transported in a straight line. According to the thickness of the cardboard, the bolts 25 are turned to adjust the height of the four lifting blocks 24. Then the bolts 25 are screwed into the corresponding threaded holes. The rotating wheels 5 of the two sets of rotating structures on the upper side limit the upper part of the cardboard. When the cardboard moves, the rotating wheels 5 rotate while limiting the movement.
[0022] A cross-cutting blade assembly and a packaging machine, such as Figure 1 and Figure 4As shown, a base 7 is provided on one side of the conveyor belt 1, and a conveyor roller 9 is provided in the middle of the base 7. The two ends of the conveyor roller 9 are rotatably connected to the two sides of the base 7. A movable groove 10 is opened on each side of the base 7. A tension spring 27 is provided in each of the two movable grooves 10. One end of the two tension springs 27 is fixedly connected to the top surface of the movable groove 10. One end of two lower pressure rollers 8 is adapted to the movable groove 10 and is slidably connected to the movable groove 10. The other end of the two tension springs 27 is fixedly connected to one end of the lower pressure roller 8. A block 14 is provided at each end of the lower pressure roller 8 and is fixedly connected to the block 14. The top surface of the two blocks 14 is fixedly... There is a telescopic rod 13, and a connecting strip 11 and a fixing block 12 are provided above each of the two telescopic rods 13. Each of the two telescopic rods 13 is slidably connected to a connecting strip 11, and one end of each of the two connecting strips 11 is fixedly connected to a fixing block 12. Each of the two connecting strips 11 has a pin on its wall. The connecting strips 11 and the telescopic rods 13 are fixed by the pins. Several insertion holes are opened on the wall of the telescopic rods 13. A second servo motor 15 is fixedly provided on one side of the base 7. The rotating shaft of the second servo motor 15 is fixedly connected to one side of the conveying roller 9 through a coupling. The middle part of the lower pressure roller 8 is rotatably connected to the two ends.
[0023] An infrared sensor is installed on the side of the base 7 near the conveyor roller 9. The infrared sensor is electrically connected to the controller. When the infrared sensor detects the paperboard passing by, it sends an electrical signal to the controller, which then stops the power supply to the conveyor belt 1. When the paperboard is completely cut and passed by the infrared sensor, the controller starts the conveyor belt 1, and the paperboard continues to be conveyed. According to the thickness of the paperboard, two pins are pulled out and inserted into the corresponding holes to make the lower pressure roller 8 press against the paperboard, but without restricting its movement. The extension force of the tension spring 27 ensures that the concave and convex parts of the paperboard at different positions can be limited. When the paperboard is moved by the conveyor roller 9, the middle part of the lower pressure roller 8 is rotated.
[0024] A cross-cutting blade assembly and a packaging machine, such as Figure 1 and Figure 5 As shown, a conveyor belt 1 is installed above the ground. A third servo motor 16, a cam 17, a second bracket 18, and a rotating rod 19 are fixedly mounted on the top surface of a base 7. A second bracket 18 is fixedly mounted on the top surface of the base 7. The two ends of the rotating rod 19 are rotatably connected to the two sides of the second bracket 18. An eccentric shaft is provided at the end of the cam 17. The rotating rod 19 passes through the two cams 17 from the position of the eccentric shaft and is fixedly connected to the two cams 17. A connecting block 29 is provided at the other end of each of the two cams 17. Each of the two connecting blocks 29 is rotatably connected to one of the cams 17. A cutter 28 is provided below the two connecting blocks 29 and is fixedly connected to the top surface of the cutter 28. The third servo motor 16 is fixedly mounted on one side of the second bracket 18. The rotating shaft of the third servo motor 16 is fixedly connected to one end of the rotating rod 19 through a coupling.
[0025] When the infrared sensor detects the cardboard passing by, the third servo motor 16 is electrically connected to the controller. The controller turns on the power of the third servo motor 16, which drives the rotating rod 19 to rotate. The eccentric shaft rotates accordingly. The eccentric shaft is rotatably connected to the cam 17, and the two cams 17 swing accordingly, driving the two connecting blocks 29 to move up and down to cut the cardboard.
[0026] A type of packaging machine, such as Figure 1 As shown, the packaging machine includes a main body, which comprises a machine body, a placement mechanism, and a conveyor belt. The machine body is located on one side of the base 7. A conveyor belt is located at the bottom of the inner side of the machine body, and a placement mechanism is located at the top of the inner side of the machine body. The placement mechanism includes a drive motor, a support roller, and a conveyor belt. The support roller is rotatably connected to the inner side of the machine body via bearings. The packaging machine also includes a drive motor, an auxiliary feeding mechanism, an anti-tipping plate, a threaded frame, a lead screw, a bevel gear set, a rotating rod, a support rod, a guide mechanism, a guide plate, a support shaft, an electric push rod, a support frame, and a conveyor belt. It is worth noting that the above structure has been disclosed in a cardboard packaging machine with a feeding structure (CN202422368635.9). The specific implementation method will not be described in detail here. The cut cardboard packaging bags are stacked on the conveyor belt.
[0027] The working principle of this utility model is as follows: A controller is set on one side of the conveyor belt 1. The conveyor belt 1 is electrically connected to the controller. When the controller turns on the power of the conveyor belt 1, the conveyor belt 1 transports the cardboard. According to the width and thickness of the cardboard, the power of the first servo motor 6 is turned on first. The first servo motor 6 drives the double-headed lead screw 20 to rotate. The two moving plates 22 drive the two long boxes 26 to move closer to each other. The two sets of opposing rotating structures move closer to each other. The two sets of rotating wheels 5 are close to the edge of the cardboard. While the cardboard is being transported continuously, all the rotating wheels 5 rotate to ensure that the cardboard is transported in a straight line. According to the thickness of the cardboard, the bolts 25 are turned to adjust the height of the four lifting blocks 24. Then the bolts 25 are screwed into the corresponding threaded holes. The rotating wheels 5 of the two sets of rotating structures on the upper side limit the upper part of the cardboard. When the cardboard moves, the rotating wheels 5 rotate while limiting the movement. An infrared sensor is set on the side of the base 7 near the conveyor roller 9. Electrically connected to the controller, when the infrared sensor detects the cardboard passing by, it sends an electrical signal to the controller, which pauses the power supply to conveyor belt 1. When the cardboard is completely cut and passed by the infrared sensor, the controller starts conveyor belt 1, and the cardboard continues to be conveyed. According to the thickness of the cardboard, two pins are pulled out and inserted into the corresponding holes, so that the lower pressure roller 8 is pressed against the cardboard but its movement is not restricted. The extension force of the tension spring 27 ensures that the concave and convex parts of the cardboard at different positions can be limited. When the cardboard is moved by the conveyor roller 9, the middle part of the lower pressure roller 8 is rotated. When the infrared sensor detects the cardboard passing by, the third servo motor 16 is electrically connected to the controller, and the controller turns on the power of the third servo motor 16. The third servo motor 16 drives the rotating rod 19 to rotate, and the eccentric shaft rotates accordingly. The eccentric shaft is rotatably connected to the cam 17, and the two cams 17 swing accordingly, driving the two connecting blocks 29 to move up and down to cut the cardboard.
[0028] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A cross-cutting blade assembly, characterized in that, include Conveyor belt (1), conveyor belt (1) is set above the ground; The limiting component is set above the conveyor belt (1). Above the conveyor belt (1), there are two long boxes (26) that are close to each other according to the width of the packaging box. Several sets of rotating structures are set on one side of the long box (26). Above the long box (26), there is a long rod (3) that can adjust the height. Several sets of rotating structures are set on one side of the long rod (3).
2. The cross-cutting blade assembly according to claim 1, characterized in that, The rotating structure includes a U-shaped block (4) and a rotating wheel (5). A rotating wheel (5) is set in the middle of each U-shaped block (4). The two ends of the rotating wheel (5) are rotatably connected to the two ends of the U-shaped block (4). One side of the long rod (3) is fixedly connected to one side of each rotating wheel (5). One side of the long box (26) is fixedly connected to one side of each rotating wheel (5).
3. A cross-cutting blade assembly according to claim 2, characterized in that, The limiting component also includes a sliding groove (23), a lifting block (24), and a bolt (25). Two shrink boxes are fixedly installed in the cavity of the long box (26), and a lifting block (24) is provided in each of the two shrink boxes. The lifting block (24) is slidably connected to the shrink box. Several sliding grooves (23) are opened in the cavity of the long box (26). Multiple ends of the long rod (3) are slidably connected to one sliding groove (23). Several threaded holes are opened on one side of the two lifting blocks (24). Two bolts (25) are provided on one side of the long box (26). The bolts (25) are threadedly connected to the threaded holes.
4. A cross-cutting blade assembly according to claim 3, characterized in that, The limiting assembly also includes a first bracket (2), a first servo motor (6), a double-ended lead screw (20), a square groove (21), and a moving plate (22). The first bracket (2) is fixed on the top surface of the conveyor belt (1). A square groove (21) is opened on the bottom surface of the middle part of the first bracket (2). The double-ended lead screw (20) is set in the cavity of the square groove (21) and is rotatably connected to both sides of the cavity of the square groove (21). The two moving plates (22) are threadedly connected to both ends of the double-ended lead screw (20). The two moving plates (22) are adapted to the square groove (21). The other end of the two moving plates (22) is fixedly connected to the top surface of a long box (26). The first servo motor (6) is fixed on one side of the first bracket (2), and its rotating shaft is fixedly connected to one end of the double-ended lead screw (20) through a coupling.
5. A cross-cutting blade assembly according to claim 4, characterized in that, A base (7) is provided on one side of the conveyor belt (1). A conveyor roller (9) is provided in the middle of the base (7). The two ends of the conveyor roller (9) are rotatably connected to the two sides of the base (7). A movable groove (10) is opened on each side of the base (7). A tension spring (27) is provided in each of the two movable grooves (10). One end of the two tension springs (27) is fixedly connected to the top surface of the movable groove (10). One end of the two pressure rollers (8) is adapted to the movable groove (10) and is slidably connected to the movable groove (10). The other end of the two tension springs (27) is fixedly connected to one end of the pressure roller (8).
6. A cross-cutting blade assembly according to claim 5, characterized in that, The lower pressure roller (8) has a block (14) at each end and is fixedly connected to the block (14). A telescopic rod (13) is fixed on the top surface of the two blocks (14). A connecting strip (11) and a fixing block (12) are provided above the two telescopic rods (13). The two telescopic rods (13) are slidably connected to a connecting strip (11). One end of the two connecting strips (11) is fixedly connected to a fixing block (12). A pin is provided on the wall of the two connecting strips (11). The connecting strip (11) and the telescopic rod (13) are fixed by the pin. Several insertion holes are opened on the wall of the telescopic rod (13).
7. A cross-cutting blade assembly according to claim 6, characterized in that, The top surface of the base (7) is fixedly provided with a third servo motor (16), a cam (17), a second bracket (18), and a rotating rod (19). The top surface of the base (7) is fixedly provided with a second bracket (18). The two ends of the rotating rod (19) are rotatably connected to the two sides of the second bracket (18). The end of the cam (17) is provided with an eccentric shaft. The rotating rod (19) passes through the two cams (17) from the position of the eccentric shaft and is fixedly connected to the two cams (17). The other end of each of the two cams (17) is provided with a connecting block (29). Each connecting block (29) is rotatably connected to a cam (17). A cutter (28) is set below the two connecting blocks (29) and is fixedly connected to the top surface of the cutter (28). The third servo motor (16) is fixedly mounted on one side of the second bracket (18). The rotating shaft of the third servo motor (16) is fixedly connected to one end of the rotating rod (19) through a coupling. A second servo motor (15) is fixedly mounted on one side of the base (7). The rotating shaft of the second servo motor (15) is fixedly connected to one side of the conveying roller (9) through a coupling.
8. A packaging machine, comprising a packaging machine body, characterized in that, The packaging machine body is provided with a cross-cutting knife assembly as described in any one of claims 1-7. The packaging machine body includes a machine body, a placement mechanism and a conveyor belt. The machine body is located on one side of the base (7). A conveyor belt is provided at the bottom of the inner side of the machine body. A placement mechanism is provided at the top of the inner side of the machine body. The placement mechanism includes a drive motor, a support roller and a conveyor belt. A support roller is rotatably connected to the inner side of the machine body through a bearing.