Pre-tightening force adjusting equipment and magnetic drive conveying line

Abstract

The utility model provides pre-tightening force adjusting equipment and a magnetic drive conveying line, which are used for limiting the clamping force between a sliding rail and a sliding device, a sliding mechanism is clamped on the sliding rail and slides along the sliding rail, a clamping mechanism is used for adjusting the clamping force of the sliding mechanism on the sliding rail, an abutting block is provided with an abutting face, the extending direction of the sliding rail is a first direction, and the extending direction of the sliding rail is a second direction. The elastic piece is arranged in the first direction, the first end of the elastic piece is relatively fixed to the sliding rail, and the second end of the elastic piece is used for abutting against the sliding mechanism. The abutting block comprises a first state and a second state, when the abutting block is in the first state, the abutting block abuts against the sliding device at the first position, when the abutting block is in the second state, the abutting block abuts against the sliding device at the second position, and the first position and the second position are arranged in a spaced mode in the first direction. According to the pre-tightening force adjusting equipment, the clamping force of the sliding device on the sliding rail can be conveniently adjusted.

Description

Technical Field

[0001] This utility model relates to the field of magnetic drive conveying technology, and in particular to a preload adjustment device and a magnetic drive conveying line. Background Technology

[0002] In existing technologies, magnetic drive conveyor lines are multi-mover intelligent conveyor lines based on the principle of linear motors. These lines mainly consist of a fixed coil, a moving magnet, and linear guide rails. Each mover does not require a dragging cable, can be independently controlled, and can adapt to the cycle time of different production stations, improving the flexibility of the production line. However, in magnetic drive conveyor lines, the clamping force between the mover and the rail needs to be limited to a certain range. If the clamping force is too small, the mover will vibrate. If the clamping force is too large, the resistance of the mover will be too high. Therefore, when setting the mover on the rail, the clamping force needs to be adjusted to ensure that the clamping force (i.e., preload) between the mover and the rail is within a specified range. Therefore, a device for conveniently adjusting the preload is needed. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a preload adjustment device that can conveniently adjust the clamping force of the sliding device on the slide rail.

[0004] This utility model also proposes a magnetic drive conveyor line.

[0005] According to a first aspect of the present invention, a preload adjusting device is used to limit the clamping force between a slide rail and a sliding device. The sliding device includes a clamping mechanism and a sliding mechanism. The sliding mechanism clamps onto the slide rail and slides along the slide rail. The clamping mechanism is used to adjust the magnitude of the clamping force of the sliding mechanism on the slide rail. The preload adjusting device is characterized in that it includes a measuring device comprising an elastic element and an abutment block. The abutment block has an abutment surface. The extension direction of the slide rail is a first direction. The elastic element is arranged along the first direction. A first end of the elastic element is fixed relative to the slide rail, and a second end of the elastic element is used to abut against the sliding mechanism. The abutment block includes a first state and a second state. When the abutment block is in the first state, it abuts against the sliding device at a first position. When the abutment block is in the second state, it abuts against the sliding device at a second position. The first position and the second position are spaced apart along the first direction.

[0006] The preload adjustment device according to the first aspect of this utility model has at least the following beneficial effects: When the sliding device moves along the first direction on the track, it compresses the elastic element, thereby generating a counter-thrust force on the sliding device. The thrust between the sliding device and the elastic element varies at different positions. The clamping force generated by the sliding device on the slide rail causes resistance when the sliding device slides along the slide rail. Since the clamping force is limited to a certain range, the resistance is also limited to a certain range. At this time, by compressing the elastic element at the first and second positions, the elastic element generates different thrusts on the sliding device, and the resistance between the sliding device and the slide rail is determined by observing the position where the sliding device stops. Thus, it can be determined whether the clamping force of the sliding device on the track is within the required range. This makes it easier to adjust the magnitude of the clamping force to achieve the effect of limiting the clamping force between the slide rail and the sliding device within a certain range.

[0007] According to some embodiments of the present invention, the measuring device includes an adjusting bracket and a pressure sensor. The adjusting bracket is slidably mounted on the slide rail. The first end of the elastic element is fixedly mounted on the adjusting bracket. The pressure sensor is mounted between the adjusting bracket and the elastic element to measure the pressure between the elastic element and the adjusting bracket.

[0008] According to some embodiments of the present invention, the elastic element is a spring, the measuring device further includes a telescopic rod, the telescopic rod includes a fixed end and a movable end, the fixed end is fixed on the adjusting bracket, the movable end extends and retracts along a first direction, the spring is sleeved on the telescopic rod, and the movable end is fixed on the second end of the spring.

[0009] According to some embodiments of the present invention, the abutting block is rotatably connected to the slide rail, and the abutting block is provided with a first abutting surface and a second abutting surface. The abutting block rotates relative to the slide rail to switch between a first state and a second state. When the abutting block is in the first state, the first abutting surface is located in the first position and is used to abut against the sliding mechanism. When the abutting block is in the second state, the second abutting surface is located in the second position and is used to abut against the sliding mechanism.

[0010] According to some embodiments of the present invention, the abutting block includes a first part and a second part, the first part is rotatably connected to the slide rail, the second part is connected to the first part, and the first abutting surface and the second abutting surface are disposed back to back on the second part.

[0011] According to some embodiments of the present invention, a contact sensor is provided on the second part, which is triggered when the second part comes into contact with the sliding device.

[0012] According to some embodiments of the present invention, the sliding mechanism includes a magnetic scale base, an upper pulley group and a lower pulley group, the upper pulley group and the lower pulley group are disposed on the magnetic scale base, and the upper pulley group and the lower pulley group are clamped on both sides of the slide rail.

[0013] According to some embodiments of the present invention, the clamping mechanism includes a cam, which is rotatably mounted on the magnetic scale base. The upper pulley group and / or the lower pulley group are mounted on the cam, and the cam rotates to adjust the distance between the upper pulley group and the lower pulley group.

[0014] According to some embodiments of this utility model, the elastic element is a spring, the measuring device further includes a fixed rod and a linear bearing, the fixed end of the linear bearing is disposed on the adjusting bracket, the movable end of the linear bearing is disposed on the fixed rod, the spring is sleeved on the fixed rod, and the second end of the spring is fixed on the fixed rod.

[0015] According to some embodiments of the present invention, it also includes a mounting plate, which is disposed on the slide rail. The mounting plate is provided with a plurality of mounting positions spaced apart along a first direction, and the adjusting bracket is installed on any of the mounting positions.

[0016] According to some embodiments of the present invention, including the preload adjusting device described in any one of the above embodiments, the sliding device is driven by magnetic force and slides along the slide rail.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the preload adjustment device of this utility model;

[0019] Figure 2 This is a schematic diagram of the sliding device of the preload adjustment equipment of this utility model;

[0020] Figure 3 This is a schematic diagram of the measuring device of the preload adjustment equipment of this utility model;

[0021] Figure 4 This is a schematic diagram of the abutment block of the preload adjustment device of this utility model.

[0022] Icon labels:

[0023] 1. Slide rail; 2. Sliding device; 21. Magnetic scale base; 22. Upper pulley assembly; 23. Lower pulley assembly; 24. Cam; 3. Measuring device; 31. Adjusting bracket; 32. Mounting plate; 33. Elastic element; 331. First end; 332. Second end; 34. Abutting block; 341. First part; 342. Second part; 343. First abutting surface; 344. Second abutting surface; 35. Fixing rod; 36. Linear bearing. Detailed Implementation

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of this utility model, it should be understood that the orientation descriptions, such as up and down, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The preload adjustment device in the first embodiment of this utility model includes: a slide rail 1, a sliding device 2, and a measuring device 3. The sliding device 2 includes a clamping mechanism and a sliding mechanism. The sliding mechanism is clamped on the slide rail 1 and slides along the slide rail 1. The clamping mechanism is used to adjust the clamping force of the sliding mechanism on the slide rail 1. The measuring device 3 includes an elastic element 33 and an abutment block 34. The abutment block 34 is provided with an abutment surface. The extension direction of the slide rail 1 is a first direction. The elastic element 33 is arranged along the first direction. The first end 331 of the elastic element 33 is fixed relative to the slide rail 1. The second end 332 of the elastic element 33 is used to abut against the sliding mechanism. The abutment block 34 includes a first state and a second state. When the abutment block 34 is in the first state, the abutment block 34 abuts against the sliding device 2 in the first position. When the abutment block 34 is in the second state, the abutment block 34 abuts against the sliding device 2 in the second position. The first position and the second position are spaced apart along the first direction.

[0029] When installing the sliding device 2 on the slide rail 1, the clamping force between the sliding device 2 and the rail needs to be within a certain range. This clamping force is positively correlated with the resistance generated when the sliding device 2 slides along the rail. Therefore, the range of resistance can be derived from the range of the clamping force.

[0030] When the sliding device 2 moves along the track in the first direction, it compresses the elastic element 33. Specifically, when the sliding device 2 abuts against the abutting block 34 in the first position, the elastic element 33 experiences a compression, generating a thrust (first thrust) on the sliding device 2. When the sliding device 2 abuts against the abutting block 34 in the second position, the elastic element 33 experiences another compression, generating a thrust (second thrust) on the sliding device 2. The first position is located on the side of the second position closer to the sliding device 2. In this second position, the compression experienced by the elastic element 33 in the first position is less than that in the second position, meaning the second thrust is greater than the first thrust. By switching the abutting block 34 between the first and second states, the clamping force between the slide rail and the sliding device is limited to a certain range.

[0031] When determining the first and second positions, the range of resistance generated when the sliding device 2 slides along the track is calculated based on the required clamping force range, i.e., the minimum resistance value A and the maximum resistance value B are obtained. At this time, pressure A is applied to the second end 332 of the elastic member 33 in the first direction, and the position of the second end 332 at this time is the first position. Pressure B is applied to the elastic member 33 in the same way, and the position of the second end 332 at this time is the second position.

[0032] When adjusting the clamping force, first clamp the clamping mechanism onto the slide rail 1 and drive the sliding device 2 to move along the first direction. When the sliding device 2 abuts against the abutting block 34 in the first position, release the sliding device 2. If the sliding device 2 remains stationary, it indicates that the pushing force A is insufficient to push the sliding device 2, and the resistance between the sliding device 2 and the slide rail 1 is greater than the minimum resistance value A, meaning that the clamping force at this time meets the minimum requirement. If the sliding device 2 slides, it indicates that the pushing force A can push the sliding device 2, and the resistance between the sliding device 2 and the slide rail 1 is less than the minimum resistance value A, meaning that the clamping force at this time does not meet the minimum requirement and the clamping force needs to be further increased.

[0033] When the sliding device 2 and the abutting block 34 are in the second position, if the sliding device 2 remains stationary after being released, it indicates that the pushing force B is insufficient to push the sliding device 2, and the resistance between the sliding device 2 and the slide rail 1 is greater than the maximum resistance value B. This means that the clamping force at this time does not meet the maximum value requirement, and the clamping force needs to be reduced. If the sliding device 2 slides, it indicates that the pushing force B can push the sliding device 2, and the resistance between the sliding device 2 and the slide rail 1 is less than the maximum resistance value B. This means that the clamping force at this time meets the maximum value requirement.

[0034] In summary, after the clamping mechanism is clamped onto the slide rail 1, if the sliding device 2 is not pushed by the elastic element 33 in the first position but is pushed by the elastic element 33 in the second position, the clamping force requirement is met. Therefore, by setting the abutment block 34 and switching the state of the abutment block 34, the sliding device 2 can abut against the abutment block 34 in either the first or second position. By observing whether the sliding device 2 separates from the abutment block 34 after being released, it is possible to quickly determine whether the clamping force provided by the clamping mechanism meets the requirements. This allows for a more convenient and faster installation of the sliding device 2 onto the slide rail 1.

[0035] According to some embodiments of this utility model, the measuring device 3 includes an adjusting bracket 31 and a pressure sensor. The adjusting bracket 31 is slidably mounted on the slide rail 1. The first end 331 of the elastic element 33 is fixedly mounted on the adjusting bracket 31. The pressure sensor is positioned between the adjusting bracket 31 and the elastic element 33 to measure the pressure between the elastic element 33 and the adjusting bracket 31. After prolonged use, the elasticity of the elastic element 33 will decrease, requiring adjustment of the position of the first end 331 of the elastic element 33 for calibration. The pressure sensor further facilitates the calibration of the elastic element 33.

[0036] According to some embodiments of this utility model, the elastic element 33 is a spring, and the measuring device 3 also includes a telescopic rod. The telescopic rod includes a fixed end and a movable end. The fixed end is fixed to the adjusting bracket 31, and the movable end extends and retracts along a first direction. The spring is sleeved on the telescopic rod, and the movable end is fixed to the second end 332 of the spring. The elastic element 33 has good elasticity and durability, and the use of the telescopic rod prevents the spring from shifting its position when compressed.

[0037] According to some embodiments of this utility model, the abutment block 34 is rotatably connected to the slide rail 1. The abutment block 34 is provided with a first abutment surface 343 and a second abutment surface 344. The abutment block 34 rotates relative to the slide rail 1 to switch between a first state and a second state. When the abutment block 34 is in the first state, the first abutment surface 343 is in a first position and is used to abut against the sliding mechanism. When the abutment block 34 is in the second state, the second abutment surface 344 is in a second position and is used to abut against the sliding mechanism. Specifically, the abutment block 34 includes a first part 341 and a second part 342. The first part 341 is rotatably connected to the slide rail 1, and the second part 342 is connected to the first part 341. The first abutment surface 343 and the second abutment surface 344 are disposed back-to-back on the second part 342. When the first part 341 is rotatably connected to the slide rail 1, it has a center point. The first part 341 rotates around the center point, and the first abutment surface 343 and the second abutment surface 344 are positioned on either side of the center point. The first abutment surface 343 is farther from the center point, while the second abutment surface 344 is closer to the center point. When the abutment block 34 is in the first state, it is rotated so that the first abutment surface 343 faces the sliding device 2, thereby causing the sliding device 2 to abut against the first abutment surface 343. When the abutment block 34 is in the second state, it is rotated so that the second abutment surface 344 faces the sliding device 2, thereby causing the sliding device 2 to abut against the second abutment surface 344.

[0038] According to some embodiments of this utility model, a contact sensor is provided on the second part 342, which is triggered when the second part 342 abuts against the magnetic scale base 21. To more conveniently observe whether the sliding device 2 is abutting against the first abutting surface 343 or the second abutting surface 344, a contact sensor is provided on the second part 342, allowing for easier observation of whether the two are abutting. Furthermore, an indicator light is provided on the second part 342, which illuminates when the contact sensor is triggered. That is, the indicator light illuminates when the first abutting surface 343 faces the sliding device 2, and goes out when the second abutting surface 344 faces the sliding device 2, indicating that the clamping force between the sliding device 2 and the slide rail 1 meets the requirements.

[0039] According to some embodiments of this utility model, the sliding mechanism includes a magnetic scale base 21, an upper pulley group 22, and a lower pulley group 23. The upper pulley group 22 and the lower pulley group 23 are disposed on the magnetic scale base 21 and clamped on both sides of the slide rail 1. The clamping mechanism includes a cam 24, which is rotatably disposed on the magnetic scale base 21. The upper pulley group 22 and / or the lower pulley group 23 are disposed on the cam 24. The cam 24 rotates to adjust the distance between the upper pulley group 22 and the lower pulley group 23. Specifically, in a magnetic drive conveyor line, the track is usually configured with V-shaped protrusions at both ends, and pulleys with V-shaped grooves are provided at both ends. The slide rail 1 is clamped by the pulleys on both sides, so that the pulley device can be installed on the slide rail 1. Furthermore, by utilizing the eccentric characteristic of the cam 24, the distance between the pulleys on both sides of the slide rail 1 is changed by rotating the cam 24, thereby adjusting the clamping force, i.e., the preload, of the clamping mechanism on the slide rail 1.

[0040] According to some embodiments of this utility model, the elastic element 33 is a spring, and the measuring device 3 further includes a fixed rod 35 and a linear bearing 36. The fixed end of the linear bearing 36 is disposed on the adjusting bracket 31, and the movable end of the linear bearing 36 is disposed on the fixed rod 35. The spring is sleeved on the fixed rod 35, and the second end 332 of the spring is fixed on the fixed rod 35. By setting the linear bearing 36 and the spring, the extension and contraction of the elastic element 33 is more stable, and the measurement of the sliding device 2 by the measuring device 3 is more accurate.

[0041] According to some embodiments of this utility model, it also includes a mounting plate 32, which is disposed on the slide rail 1. The mounting plate 32 has a plurality of mounting positions spaced apart along a first direction, and the adjusting bracket 31 is mounted at any of these mounting positions. By providing different mounting positions on the mounting plate 32, the compression amount of the elastic element 33 corresponding to the first and second positions differs when the adjusting bracket 31 is mounted at different positions, thereby accommodating the installation of more types of sliding devices 2.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A preload adjustment device for limiting the clamping force between a slide rail and a sliding device, the sliding device comprising a clamping mechanism and a sliding mechanism, the sliding mechanism clamping onto the slide rail and sliding along the slide rail, the clamping mechanism being used to adjust the magnitude of the clamping force of the sliding mechanism on the slide rail, characterized in that, The preload adjustment device includes: A measuring device includes an elastic element and a contact block. The contact block has a contact surface. The extension direction of the slide rail is a first direction. The elastic element is arranged along the first direction. A first end of the elastic element is fixed relative to the slide rail, and a second end of the elastic element is used to abut against the sliding mechanism. The contact block has a first state and a second state. When the contact block is in the first state, it abuts against the sliding mechanism at a first position. When the contact block is in the second state, it abuts against the sliding mechanism at a second position. The first position and the second position are spaced apart along the first direction.

2. The preload adjusting device according to claim 1, characterized in that, The measuring device includes an adjusting bracket and a pressure sensor. The adjusting bracket is slidably mounted on the slide rail. The first end of the elastic element is fixedly mounted on the adjusting bracket. The pressure sensor is disposed between the adjusting bracket and the elastic element to measure the pressure between the elastic element and the adjusting bracket.

3. The preload adjusting device according to claim 2, characterized in that, The elastic element is a spring, and the measuring device also includes a telescopic rod, which has a fixed end and a movable end. The fixed end is fixed to the adjusting bracket, and the movable end extends and retracts along a first direction. The spring is sleeved on the telescopic rod, and the movable end is fixed to the second end of the spring.

4. The preload adjusting device according to claim 1, characterized in that, The abutment block is rotatably connected to the slide rail. The abutment block is provided with a first abutment surface and a second abutment surface. The abutment block rotates relative to the slide rail to switch between a first state and a second state. When the abutment block is in the first state, the first abutment surface is located in the first position and is used to abut against the sliding mechanism. When the abutment block is in the second state, the second abutment surface is located in the second position and is used to abut against the sliding mechanism.

5. The preload adjusting device according to claim 4, characterized in that, The abutting block includes a first part and a second part. The first part is rotatably connected to the slide rail, and the second part is connected to the first part. The first abutting surface and the second abutting surface are arranged back to back on the second part.

6. The preload adjusting device according to claim 5, characterized in that, The second part is provided with a contact sensor, which is triggered when the second part comes into contact with the sliding device.

7. The preload adjusting device according to claim 1, characterized in that, The sliding mechanism includes a magnetic scale base, an upper pulley group, and a lower pulley group. The upper pulley group and the lower pulley group are disposed on the magnetic scale base and are clamped on both sides of the slide rail.

8. The preload adjusting device according to claim 7, characterized in that, The clamping mechanism includes a cam, which is rotatably mounted on the magnetic scale base. The upper pulley group and / or the lower pulley group are mounted on the cam. The cam rotates to adjust the distance between the upper pulley group and the lower pulley group.

9. The preload adjusting device according to claim 2, characterized in that, The elastic element is a spring. The measuring device also includes a fixed rod and a linear bearing. The fixed end of the linear bearing is disposed on the adjusting bracket, the movable end of the linear bearing is disposed on the fixed rod, the spring is sleeved on the fixed rod, and the second end of the spring is fixed on the fixed rod.

10. The preload adjusting device according to claim 2, characterized in that, It also includes a mounting plate, which is disposed on the slide rail. The mounting plate has a plurality of mounting positions spaced apart along a first direction, and the adjusting bracket is installed at any of the mounting positions.

11. A magnetically driven conveyor line, characterized in that, The device includes the preload adjustment device according to any one of claims 1 to 9, wherein the sliding device is driven by magnetic force and slides along the slide rail.

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