A sliding sleeve mechanism

Abstract

The utility model belongs to pipe cutting equipment field, concretely relates to a sliding sleeve mechanism, including annular base, be equipped with annular first recess and a plurality of second recess on one surface of base, first recess and second recess intercommunication, one end is located in second recess and the other end is located in first recess's compression spring, be located in the ball between two adjacent partitions between first recess, ball small part can cross first recess near base center's inner side wall, be located in first recess's stopper, one end of stopper abuts against the other end of compression spring, the other end of stopper abuts against ball, and with base shape corresponds and covers and sets up on first recess and second recess's cover plate. The utility model sliding rod can very flow relative sliding after passing through sliding sleeve, and two close, will not appear loose, especially sliding rod passes through a plurality of sliding sleeve mechanism, even if sliding rod does oblique movement, will not appear jam.

Description

Technical Field

[0001] This utility model belongs to the field of pipe cutting equipment, and specifically relates to a sliding sleeve mechanism. Background Technology

[0002] In the field of laser cutting, the workpiece tray is a key component that ensures the stable placement of the workpiece to be cut, and its structural design directly affects the efficiency and precision of the cutting operation. Existing laser cutting equipment trays mainly consist of several long strips of steel plates arranged side by side. To achieve reliable support for the workpiece, each long strip of steel plate has a serrated structure on one side. The concave and convex shape of the serrations forms a stable contact with the bottom of the workpiece, preventing displacement during the cutting process.

[0003] In actual processing scenarios, due to differences in the size and shape of the workpieces to be cut, it is necessary to adjust the spacing between adjacent steel plates on the pallet to ensure a reasonable distribution of workpiece support points and avoid deformation caused by uneven support. To ensure the stability of the steel plate adjustment process and avoid problems such as tilting or offset of the steel plates, the industry generally uses round tubes as guide components. The round tubes vertically pass through the pre-set holes on all steel plates, and the steel plates can move back and forth along the axis of the round tubes, thereby achieving flexible adjustment of the spacing.

[0004] However, the smoothness of the sliding of the steel plate on the round tube has become a prominent problem restricting the performance of the pallet. On the one hand, the fitting precision between the steel plate and the round tube is difficult to control precisely. If the gap between the two is too small, it is easy for processing errors, assembly deviations, or changes in ambient temperature to cause excessive contact, increasing sliding resistance. If the gap is too large, the steel plate is prone to shaking during sliding, and after long-term use, it may cause jamming due to increased local wear. On the other hand, during the repeated friction between the steel plate hole wall and the outer surface of the round tube, wear debris is easily generated. Moreover, if protection is not in place, dust in the air and oil stains from the processing will also adhere to the contact surface. These impurities will further aggravate friction, causing jamming when the steel plate slides.

[0005] Such jamming issues not only reduce the efficiency of steel plate spacing adjustment and increase the workload of operators, but may also cause damage to the steel plate holes or the surface of the round tube during forced adjustment, shortening the service life of the pallet. More importantly, the positioning deviation of the steel plate caused by jamming will indirectly affect the cutting accuracy of the workpiece, leading to increased processing errors and potential quality problems in subsequent production stages. Therefore, ensuring the smooth sliding of the steel plate on the round tube and avoiding jamming has become an urgent technical challenge to be solved in the optimization of the pallet structure of laser cutting equipment. Utility Model Content

[0006] The sliding sleeve mechanism provided by this utility model can effectively solve the problems in the background art.

[0007] This utility model provides a sliding sleeve mechanism, comprising:

[0008] An annular base has an annular first groove and several second grooves distributed around the outer ring of the first groove on one side of the base. The first groove is connected to the second groove, and a partition is provided in the first groove between two adjacent second grooves.

[0009] A compression spring with one end in the second groove and the other end in the first groove;

[0010] A ball is placed in the first groove and located between two adjacent partitions, with a small portion of the ball able to pass over the inner sidewall of the first groove near the center of the base;

[0011] A stop block is provided in the first groove, with one end of the stop block abutting against the other end of the compression spring and the other end of the stop block abutting against the ball;

[0012] And a cover plate corresponding to the shape of the base and covering the first and second grooves.

[0013] As a further optimization of this utility model, the height of the inner wall of the first groove near the center of the base is one-quarter to one-fifth of the diameter of the ball.

[0014] As a further optimization of this utility model, the inner ring end of the cover plate is provided with a protrusion, which is correspondingly provided with the inner sidewall of the first groove near the center of the base, and the height of the protrusion is one-quarter to one-fifth of the diameter of the ball.

[0015] As a further optimization of this utility model, the second groove is provided with twelve grooves arranged in a circular array.

[0016] As a further optimization of this utility model, the number of stops is the same as that of the balls, and the partition separates the adjacent stops.

[0017] As a further optimization of this utility model, several adjacent balls share a single stop, and the partition only separates adjacent balls.

[0018] An adjustable distance tray device, characterized in that it includes:

[0019] A scissor-type telescopic linkage mechanism that extends and retracts horizontally, with two sets of telescopic linkage mechanisms arranged in parallel.

[0020] The upper end of the trolley is connected to the lower hinge shaft of the telescopic linkage mechanism, and the lower end of the trolley is provided with at least two rollers respectively distributed on both sides of the lower hinge shaft of the telescopic linkage mechanism.

[0021] The lower end of the support is connected to the upper hinge shaft of the telescopic linkage mechanism;

[0022] A strip with a serrated long side has its two ends fixed to the opposite support parts above two sets of telescopic linkage mechanisms. The strip also has through holes, and a sliding sleeve mechanism is installed in the through holes.

[0023] And a sliding rod that runs through the sliding sleeve mechanism and can slide relative to the slats.

[0024] As a further optimization of this utility model, the sliding sleeve mechanism is interference-fitted with the slats or bolted together.

[0025] This utility model provides a sliding sleeve mechanism and an adjustable distance support plate device for its application. After the sliding rod passes through the sliding sleeve, it can slide smoothly relative to the sliding sleeve, and the two fit tightly without loosening. In particular, after the sliding rod passes through several sliding sleeve mechanisms, even if the sliding rod makes an oblique movement, there will be no jamming. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Example 1;

[0027] Figure 2 yes Figure 1 Top view;

[0028] Figure 3 yes Figure 1 Structural diagram with cover plate removed;

[0029] Figure 4 yes Figure 1 Schematic diagram of the central base structure;

[0030] Figure 5 yes Figure 1 Schematic diagram of the middle cover plate structure;

[0031] Figure 6 This is a schematic diagram of the structure of Example 2;

[0032] Among them, the base 1, the first groove 1a, the second groove 1b, the partition 1c, the inner sidewall 1d, the compression spring 2, the ball 3, the stop block 4, the cover plate 5, the protrusion 5a, the telescopic linkage mechanism 6, the trolley 7, the roller 7a, the support part 8, the slat 9, and the slide rod 10. Detailed Implementation

[0033] Example 1

[0034] like Figure 1-5 As shown, the sliding sleeve mechanism provided in this embodiment includes a base 1, a compression spring 2, a ball bearing 3, a stop block 4, and a cover plate 5.

[0035] The base 1 is in the shape of a thin ring plate, and the top of the base 1 is provided with a first annular groove 1a with a size smaller than that of the base 1 itself.

[0036] A plurality of second grooves 1b are provided around the outer ring of the first groove 1a, and the second grooves 1b are distributed in a circular array. The second grooves 1b are used to install the compression spring 2, so the second grooves 1b are set into strips corresponding to the shape of the compression spring 2, so that a part of the compression spring 2 can be placed exactly in the second grooves 1b.

[0037] The second groove 1b is connected to the first groove 1a, and another part of the compression spring 2 extends from the second groove 1b into the first groove 1a.

[0038] The first groove 1a is also provided with a partition 1c, which is located between two adjacent second grooves 1b.

[0039] The ball bearing 3 is located between two adjacent partition plates 1c. In this embodiment, twelve ball bearings 3 are provided, and therefore twelve second grooves 1b and compression spring 2 stops 4 are provided accordingly.

[0040] The stop block 4 is located in the first groove 1a. The stop block 4 is located between the ball 3 and the compression spring 2. One end of the stop block 4 abuts against the ball 3, and the other end of the stop block 4 abuts against the compression spring 2.

[0041] The cover plate 5 is an annular shape corresponding to the shape of the base 1. After the cover plate 5 covers the first groove 1a and the second groove 1b, it is fixed to the base 1 by bolts.

[0042] Under the force of the compression spring 2, a small portion of the ball 3 can extend beyond the inner wall 1d of the first groove 1a near the center of the base 1. In other words, a small part of the ball 3 protrudes or extends beyond the inner ring sidewall of the base 1 and the cover plate 5. Therefore, the inner wall 1d of the first groove 1a near the center of the base 1 needs to be made relatively low. Specifically, the height can be set to one-quarter of the diameter of the ball 3, allowing a small portion of the ball 3 to extend while preventing it from detaching from the first groove 1a. In other embodiments, the height of the inner wall 1d of the first groove 1a near the center of the base 1 can also be set to one-fifth of the diameter of the ball 3 or other dimensions between one-quarter and one-fifth.

[0043] Preferably, in this embodiment, a protrusion 5a is provided at the inner ring end of the cover plate 5. The protrusion 5a is correspondingly provided to the inner sidewall 1d of the first groove 1a near the center of the base 1. The height of the protrusion 5a is also one-fifth of the diameter of the ball 3. The function of the protrusion 5a is the same as that of the inner sidewall 1d of the first groove 1a near the center of the base 1. In other embodiments, the height of the protrusion 5a can be set to one-fifth of the diameter of the ball 3 or other dimensions between one-quarter and one-fifth.

[0044] In this embodiment, there are also twelve stops 4, with each ball 3 corresponding to one stop 4, and the partition 1c also separates the stops 4.

[0045] In another embodiment, two or three adjacent balls 3 share a single stop block 4, and the partition 1c is made shorter so that it only separates adjacent balls 3 without affecting the use of the stop block 4. This embodiment is more convenient and efficient to install.

[0046] Example 2

[0047] like Figure 6 As shown, this embodiment includes a telescopic linkage mechanism 6, a trolley 7, a support part 8, a slat 9, and a slide bar 10.

[0048] The telescopic linkage mechanism 6 specifically adopts a scissor-type telescopic linkage mechanism 6 that extends and retracts in the horizontal direction, wherein the middle, upper and lower parts of the two links are all hinged through hinge shafts.

[0049] In this embodiment, the telescopic linkage mechanism 6 is provided in two sets, which are arranged in parallel and symmetrically. The hinge axis of the two lower links of each set of telescopic linkage mechanism 6 is also connected to the upper end of the trolley 7.

[0050] The lower end of the trolley 7 is equipped with two rollers 7a, which are located on both sides of the hinge shaft below the telescopic linkage mechanism 6. With this configuration, the telescopic linkage mechanism 6 can slide smoothly during extension and retraction without tipping over.

[0051] The lower end of the support part 8 is connected to the upper hinge shaft of the telescopic linkage mechanism 6, and the upper end of the support part 8 is used to fix the strip 9.

[0052] The strip 9 is a long strip, and one of its long edges is serrated to support the workpiece to be cut.

[0053] The two ends of the slat 9 are respectively fixed to the support parts 8 arranged opposite to each other on the two sets of telescopic linkage mechanisms 6. The slat 9 is also provided with through holes. Specifically, each slat 9 is provided with two through holes, and the two through holes are located at both ends of the slat 9 respectively.

[0054] In Embodiment 1, the sliding sleeve mechanism is located within the through hole and is specifically designed with an interference fit. In other embodiments, the outer wall of the base 1 is provided with a threaded hole, and a bolt passes through the side wall of the strip 9, extends into the through hole, and is threadedly connected to the threaded hole on the outer wall of the base 1 to fix the sliding sleeve mechanism on the base 1.

[0055] The slide rod 10 passes through the sliding sleeve mechanism of all the strips 9, and the slide rod 10 can slide relative to the strips 9 on the through hole.

[0056] In this embodiment, when adjusting the spacing of the slats 9, the sliding rod 10 slides very smoothly, and there will be no jamming even when the sliding rod 10 moves diagonally upwards or downwards. The sliding rod 10 and the sliding sleeve fit tightly together without any loosening.

[0057] It should be understood that the descriptions of directions or positional relationships such as up, down, left, right, front, back, top, bottom, tail, horizontal, and vertical in this application are all based on the accompanying drawings in the specification and are only used to more clearly express the technical solution and simplify the description, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A sliding sleeve mechanism, characterized in that, include: An annular base, with an annular first groove and several second grooves distributed around the outer ring of the first groove on one side of the base, the first groove and the second grooves are connected, and a partition is provided in the first groove between two adjacent second grooves; A compression spring with one end in the second groove and the other end in the first groove; A ball is placed in the first groove and located between two adjacent partitions, with a small portion of the ball able to pass over the inner sidewall of the first groove near the center of the base; A stop block is provided in the first groove, with one end of the stop block abutting against the other end of the compression spring and the other end of the stop block abutting against the ball; And a cover plate corresponding to the shape of the base and covering the first and second grooves.

2. The sliding sleeve mechanism according to claim 1, characterized in that, The height of the inner wall of the first groove near the center of the base is one-quarter to one-fifth of the diameter of the ball.

3. The sliding sleeve mechanism according to claim 1, characterized in that, The inner ring end of the cover plate is provided with a protrusion, which is corresponding to the inner side wall of the first groove near the center of the base. The height of the protrusion is one-quarter to one-fifth of the diameter of the ball.

4. The sliding sleeve mechanism according to claim 1, characterized in that, The second groove has twelve grooves arranged in a circular array.

5. A sliding sleeve mechanism according to claim 1, characterized in that, The number of stops is the same as that of the balls, and partitions separate adjacent stops.

6. A sliding sleeve mechanism according to claim 1, characterized in that, Several adjacent balls share a single stop, and the partition only separates adjacent balls.

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