A follow-up drag chain support mechanism and working method

Abstract

The present invention discloses a follow-up type drag chain support mechanism and working method, which relates to the field of industrial automation technology. A drag chain bracket is used to support the drag chain throughout the entire process, fully protect the drag chain, and prevent sagging. At the same time, the drag chain bracket and the drag chain are synchronously followed to ensure that the drag chain bracket and the drag chain do not interfere with each other throughout the entire process. The technical solution includes a bed; two parallel tracks are arranged above the bed, and a drag chain bracket is arranged on the track. The drag chain bracket has four V-groove rollers that can move along the track, and pulley blocks are arranged at both ends of the drag chain bracket; a fixed bracket fixed on the upper part of the bed is located between the two parallel tracks and below the drag chain bracket, one end of the drag chain is connected to the fixed bracket, and the other end is protected by a crossbeam. A tensioning shaft is arranged above the fixed bracket, which is fixedly connected to the first and second steel wire ropes respectively; the first steel wire rope passes around the pulley block at one end of the drag chain bracket and is fixed to the crossbeam protection, and the second steel wire rope passes around the other end and is fixed to the crossbeam protection.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial automation, and in particular to a follower type drag chain support mechanism and a working method. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Drag chains are suitable for occasions with reciprocating motion, and are particularly widely used in automated equipment such as CNC machine tools and laser cutting machines. They are especially used in large-format laser cutting machines that have the advantages of low price and superior performance. Since the structure of the drag chain is that the upper section is stacked on the lower section of the drag chain, it will rub against the lower section of the drag chain during its movement, which will seriously wear the drag chain over a long period of time and shorten its service life.

[0004] For large-format laser cutting machines, the conventional drag chain support structure cannot support the second half of the drag chain due to its large size and long drag chain, causing the drag chain to sag and be damaged. At the same time, the moving speed of the drag chain support structure does not match, resulting in interference between the drag chain and the drag chain support mechanism. Therefore, there is an urgent need to develop a follow-up drag chain support mechanism that can move with the drag chain, provide non-interference between the support frame and the drag chain throughout the entire process, fully protect the drag chain, and prevent sagging. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a follow-up type drag chain support mechanism and a working method. By changing the drag chain support structure, a drag chain bracket is used to support the drag chain throughout the entire process, thereby fully protecting the drag chain and preventing it from sagging. At the same time, since the moving speed of the drag chain traction end and the crossbeam protection are the same, the drag chain bracket and the drag chain can follow up synchronously, ensuring that the drag chain bracket and the drag chain do not interfere with each other throughout the entire process.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In a first aspect, the present invention provides a follow-up type drag chain support mechanism, comprising a bed; two parallel tracks are arranged above the bed, a drag chain bracket is arranged on the track, and the drag chain bracket has four V-groove rollers so that the drag chain bracket can move along the track; pulley blocks are respectively arranged at both ends of the drag chain bracket;

[0008] A fixed bracket is fixedly arranged on the upper part of the bed, the fixed bracket is between two parallel rails, the fixed bracket is located below the drag chain bracket, one end of the drag chain is connected to the fixed bracket, and the other end is provided with a crossbeam protection, a tensioning shaft is arranged above the fixed bracket, and the tensioning shaft is fixedly connected to the first steel wire rope and the second steel wire rope respectively; the first steel wire rope passes through the pulley block at one end of the drag chain bracket and is fixedly connected to the crossbeam protection, and the second steel wire rope passes through the other end of the drag chain bracket and is fixedly connected to the crossbeam protection;

[0009] The drag chain is divided into an upper straight section, a curved section and a lower straight section. The upper straight section of the drag chain is supported by the drag chain bracket, and the lower straight section of the drag chain is supported by the bed.

[0010] Furthermore, the drag chain bracket includes two cross beams and a longitudinal beam, the cross beam is fixedly connected to the end of the longitudinal beam, and the two ends of the cross beam are respectively provided with supporting legs, and the supporting legs are fixedly connected to the end of the cross beam.

[0011] Furthermore, a pulley block is arranged between the two legs corresponding to the cross beam, and each pulley block includes an upper roller and a lower roller. The upper roller is arranged on the top of the leg, and the lower roller is arranged on the leg at the same height as the cross beam and away from the side of the longitudinal beam.

[0012] Furthermore, a V-groove roller is installed at the bottom of the leg; a through hole is provided at the core of the V-groove roller, a first pin is provided in the through hole, external threads are provided at both ends of the first pin, and the V-groove roller is fixed to the bottom of the leg by a first nut; a baffle is also provided between the leg and the first nut.

[0013] Furthermore, a first bearing is arranged between the first pin shaft and the V-groove roller, and a first bearing retaining ring is also arranged on the V-groove roller outside the first bearing.

[0014] Furthermore, a through hole is opened in the core of the upper roller, a second pin shaft is installed in the through hole, a second bearing is arranged between the second pin shaft and the upper roller, there are two second bearings and they are respectively arranged at the ends of the upper roller, and a second bearing retaining ring is arranged on the outer side of the second bearing.

[0015] Furthermore, two tensioning plates are provided on the upper part of the fixing bracket, namely a first tensioning plate and a second tensioning plate. A first tensioning shaft is installed on the first tensioning plate, and a second tensioning shaft is installed on the second tensioning plate.

[0016] Furthermore, one end of the first tensioning shaft is connected to the first steel wire rope, and the other end of the first tensioning shaft is connected to the first tensioning plate. The first tensioning plate is provided with an internal thread, and the first tensioning shaft is provided with an external thread. The first steel wire rope is tightened by the cooperation between the internal thread of the first tensioning plate and the external thread of the first tensioning shaft.

[0017] Furthermore, one end of the second tensioning shaft is connected to the second steel wire rope, and the other end of the second tensioning shaft is connected to the second tensioning plate. The second tensioning plate is provided with an internal thread, and the second tensioning shaft is provided with an external thread. The second steel wire rope is tightened by the cooperation between the internal thread of the second tensioning plate and the external thread of the second tensioning shaft.

[0018] In a second aspect, the present invention provides a working method of a follower type drag chain support mechanism, comprising the following steps:

[0019] S1. When the crossbeam protection moves to the right, the crossbeam protection drives one end of the first steel wire rope to move to the right, and the drag chain bracket moves to the right under the action of the first steel wire rope. At the same time, the second steel wire rope limits the moving position of the drag chain bracket at the other end of the drag chain bracket. The moving speed of the drag chain traction end is the same as that of the crossbeam protection, so that the drag chain bracket and the drag chain can move synchronously;

[0020] S2. When the crossbeam protection moves to the left, the crossbeam protection drives one end of the second steel wire rope to move to the left, and the drag chain bracket moves to the left under the action of the second steel wire rope. At the same time, the first steel wire rope limits the position of the drag chain bracket moving to the left. The moving speed of the drag chain traction end is the same as that of the crossbeam protection, so that the drag chain bracket and the drag chain can move synchronously; wait for the next work need to make the crossbeam protection move back and forth in a cycle.

[0021] The beneficial effects of the present invention are as follows:

[0022] The present invention changes the drag chain support structure, uses the drag chain bracket to support the drag chain throughout the whole process, fully protects the drag chain, prevents sagging, and realizes the synchronous follow-up of the drag chain bracket and the drag chain. During the movement, the cooperation of the steel wire rope with the tensioning shaft and the tensioning plate ensures the precise control of the moving position of the drag chain bracket, avoids the problem of the drag chain bracket being out of control during the movement, and at the same time, the pulley block can effectively support the drag chain to prevent sagging. When the crossbeam protection and the drag chain move, the first steel wire rope and the second steel wire rope are driven to move. Since the fixed bracket cannot move, during the movement of the crossbeam protection, the drag chain bracket will move left and right under the action of the first steel wire rope and the second steel wire rope, thereby realizing the synchronous movement between the drag chain bracket and the drag chain. Since the drag chain bracket and the drag chain move at the same speed, the interference problem between the drag chain bracket and the drag chain is avoided, the normal operation of the drag chain is guaranteed, the service life of the drag chain is extended, and the reliability and stability of the entire system are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 1 It is a schematic diagram of the overall structure of the support mechanism of the present invention;

[0025] Figure 2 This is a structural diagram of the towline bracket of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the fixing bracket of the present invention;

[0027] Figure 4 It is an exploded view of the upper roller and V-groove roller installation structure of the present invention.

[0028] In the figure, 1, bed; 2, drag chain; 3, fixed bracket; 4, drag chain bracket; 5, track; 6, crossbeam protection; 7, upper roller; 8, lower roller; 9, second wire rope; 10, first wire rope; 11, support leg; 12, V-groove roller; 13, longitudinal beam; 14, crossbeam; 15, second tensioning shaft; 16, first tensioning shaft; 17, first tensioning plate; 18, second tensioning plate; 19, first pin shaft; 20, first bearing; 21, first bearing retaining ring; 22, baffle; 23, first nut; 24, second pin shaft; 25, second bearing; 26, second bearing retaining ring; 27, second nut. DETAILED DESCRIPTION

[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0031] Embodiment 1

[0032] A typical implementation of the present invention is as follows Figure 1-Figure 4As shown, a follow-up type drag chain 2 support mechanism comprises a bed 1, a track 5 is arranged above the bed 1, a drag chain bracket 4 is arranged on the track 5, the drag chain bracket 4 has four V-groove rollers 12, so that the drag chain bracket 4 can move along the track 5; a group of pulleys are arranged at both ends of the drag chain bracket 4, and the pulleys are used to support the drag chain 2; a fixed bracket 3 is arranged between the tracks 5 on the upper part of the bed 1, and the fixed bracket 3 is located below the drag chain bracket 4, one end of the drag chain 2 is connected to the fixed bracket 3, and the other end is connected to the crossbeam protection 6, and a tensioning shaft is arranged above the fixed bracket 3, and the tensioning shafts are respectively arranged It is fixedly connected with the first steel wire rope 10 and the second steel wire rope 9; the first steel wire rope 10 passes over the pulley at one end of the drag chain bracket 4 and is fixedly connected with the crossbeam protection 6, and the second steel wire rope 9 passes over the other end of the drag chain bracket 4 and is fixedly connected with the crossbeam protection 6; when the crossbeam protection 6 and the drag chain 2 move, the first steel wire rope 10 and the second steel wire rope 9 are driven to move. Since the fixed bracket 3 cannot move, during the movement of the crossbeam protection 6, the drag chain bracket 4 will move left and right under the action of the first steel wire rope 10 and the second steel wire rope 9, thereby realizing the follow-up between the drag chain bracket 4 and the drag chain 2.

[0033] The drag chain bracket 4 is an "I"-shaped structure consisting of two cross beams 14 and a longitudinal beam 13. Support legs 11 are respectively arranged at the two ends of the two cross beams 14. There are four legs 11 in total. A pulley block is arranged between the two legs 11 corresponding to each cross beam 14. Each pulley block is composed of two rollers, one of which is an upper roller 7, which is arranged on the top of the leg 11, and the other roller is a lower roller 8, which is arranged on the leg 11 at the same height as the cross beam 14 and away from the side of the longitudinal beam 13; a groove is opened in the middle position of the upper roller 7 and the lower roller 8 for installing a wire rope to prevent the wire rope from falling off or shifting during the rotation of the upper and lower rollers 8. The upper roller 7 is also used to support the drag chain 2 to prevent the drag chain 2 from sagging during use.

[0034] A V-groove roller 12 is installed at the bottom of the leg 11; a through hole is provided at the core of the V-groove roller 12 for installing a first pin shaft 19, and external threads are provided at both ends of the first pin shaft 19. The V-groove roller 12 is fixed to the bottom of the leg 11 by a first nut 23. A baffle 22 is provided between the leg 11 and the first nut 23. The baffle 22 is used to position the first pin shaft 19 to prevent the first pin shaft 19 from falling off from the mounting groove of the leg 11. A first bearing 20 is provided between the first pin shaft 19 and the V-groove roller 12, and a first bearing retaining ring 21 is also provided on the V-groove roller 12 outside the first bearing 20 to avoid the problem of the bearing falling off of the V-groove roller 12 during rolling. At the same time, the provision of the bearing can effectively reduce the resistance of the V-groove roller 12 to move on the guide rail.

[0035] A through hole is opened in the core of the upper roller 7, and a second pin shaft 24 is installed in the through hole. The second pin shaft 24 is used to support and install the upper roller 7 on the support leg 11. A second bearing 25 is arranged between the second pin shaft 24 and the upper roller 7. There are two second bearings 25, which are respectively arranged at the ends of the upper roller 7. A second bearing retaining ring 26 is arranged on the outer side of the second bearing 25 to prevent the second bearing 25 from falling off during rotation. An external thread is provided on the end of the second pin shaft 24 for installing a second nut 27, and the second pin shaft 24 is further fixed to the support leg 11 through the second nut 27; the installation method of the lower roller 8 is the same as that of the upper roller 7.

[0036] When the crossbeam protection 6 moves to the right, it drives the first steel wire rope 10 to drag the drag chain bracket 4 to move to the right, and at the same time, the second steel wire rope 9 limits the position of the drag chain bracket 4 moving to the right, preventing the drag chain bracket 4 from losing control of the movement. The drag chain 2 moves to the right with the crossbeam protection 6. When the crossbeam protection 6 moves to the left, it drives the second steel wire rope 9 to drag the drag chain bracket 4 to move to the left, and at the same time, the first steel wire rope 10 limits the position of the drag chain bracket 4 moving to the left, preventing the drag chain bracket 4 from losing control of the movement. The drag chain 2 moves to the left with the crossbeam protection 6. In this way, the drag chain bracket 4 moves with the drag chain 2, and the drag chain bracket 4 provides full support for the drag chain 2.

[0037] Since one end of the first steel wire rope 10 and the second steel wire rope 9 is fixed, each set of pulleys is equivalent to a movable pulley during operation, so the speed of movement of the rollers on both sides of the drag chain bracket 4 is 1 / 2 of the movement speed of the traction ends of the first steel wire rope 10 and the second steel wire rope 9. The traction ends of the first steel wire rope 10 and the second steel wire rope 9 and the traction end of the drag chain 2 are all fixed on the crossbeam protection 6, so the movement speed of the traction end of the drag chain 2 is the same as that of the crossbeam protection 6, and the movement speed of the bending position of the drag chain 2 is also 1 / 2 of the speed of its traction end. In this way, the drag chain bracket 4 and the drag chain 2 can be synchronously followed, and at the same time, the drag chain 2 can be effectively supported to prevent the drag chain 2 from sagging, and the movement speed of the drag chain bracket 4 and the bending part of the drag chain 2 are not consistent, which leads to interference between the drag chain bracket 4 and the drag chain 2.

[0038] The fixed bracket 3 is fixedly installed on the bed 1 between the two guide rails. Two tensioning plates are arranged on the upper part of the fixed bracket 3, namely the first tensioning plate 17 and the second tensioning plate 18. There are two tensioning shafts, namely the first tensioning shaft 16 and the second tensioning shaft 15. One end of the first tensioning shaft 16 is connected to the first steel wire rope 10, and the other end of the first tensioning shaft 16 is connected to the first tensioning plate 17. The first tensioning plate 17 is provided with an internal thread, and the first tensioning shaft 16 is provided with an external thread. The first steel wire rope 10 is tensioned by the cooperation of the internal thread of the first tensioning plate 17 and the external thread of the first tensioning shaft 16; one end of the second tensioning shaft 15 is connected to the second steel wire rope 9, and the other end of the second tensioning shaft 15 is connected to the second tensioning plate 18. The second tensioning plate 18 is provided with an internal thread, and the second tensioning shaft 15 is provided with an external thread. The second steel wire rope 9 is tensioned by the cooperation of the internal thread of the second tensioning plate 18 and the external thread of the second tensioning shaft 15.

[0039] Embodiment 2

[0040] The present invention provides a working method of a follower type drag chain 2 supporting mechanism, comprising the following process:

[0041] S1. When the crossbeam protection 6 moves to the right, the crossbeam protection 6 drives one end of the first steel wire rope 10 to move to the right, and the drag chain bracket 4 moves to the right under the action of the first steel wire rope 10. At the same time, the second steel wire rope 9 limits the moving position of the drag chain bracket 4 at the other end of the drag chain bracket 4 to prevent the drag chain bracket 4 from moving out of control. The traction ends of the first steel wire rope 10 and the second steel wire rope 9 and the traction end of the drag chain 2 are all fixed on the crossbeam protection 6. The traction end of the drag chain 2 has the same moving speed as the crossbeam protection 6, so that the drag chain bracket 4 and the drag chain 2 can move synchronously.

[0042] S2. When the crossbeam protection 6 moves to the left, the crossbeam protection 6 drives one end of the second steel wire rope 9 to move to the left, and the drag chain bracket 4 moves to the left under the action of the second steel wire rope 9. At the same time, the first steel wire rope 10 limits the position of the drag chain bracket 4 moving to the left, so as to avoid the movement of the drag chain bracket 4 from getting out of control. The traction ends of the first steel wire rope 10 and the second steel wire rope 9 and the traction end of the drag chain 2 are all fixed on the crossbeam protection 6. The moving speed of the traction end of the drag chain 2 is the same as that of the crossbeam protection 6, so as to realize the synchronous following of the drag chain bracket 4 and the drag chain 2; wait for the next work need, so that the crossbeam protection 6 moves back and forth in a cycle; the drag chain 2 moves to the left together with the crossbeam protection 6, so that the drag chain bracket 4 moves with the drag chain 2, and the drag chain bracket 4 provides full support for the drag chain 2.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A follow-up drag chain support mechanism, characterized in that: Including bed; Two parallel tracks are arranged above the bed, and a drag chain bracket is arranged on the track. The drag chain bracket has four V-groove rollers so that the drag chain bracket can move along the track; pulley blocks are arranged at both ends of the drag chain bracket; A fixed bracket is fixedly arranged on the upper part of the bed, the fixed bracket is between two parallel rails, the fixed bracket is located below the drag chain bracket, one end of the drag chain is connected to the fixed bracket, and the other end is provided with a crossbeam protection, a tensioning shaft is arranged above the fixed bracket, and the tensioning shaft is fixedly connected to the first steel wire rope and the second steel wire rope respectively; the first steel wire rope passes through the pulley block at one end of the drag chain bracket and is fixedly connected to the crossbeam protection, and the second steel wire rope passes through the other end of the drag chain bracket and is fixedly connected to the crossbeam protection; A pulley block is arranged between the two legs corresponding to the cross beam, each pulley block comprises an upper roller and a lower roller, the upper roller is arranged on the top of the leg, the lower roller is arranged on the leg at the same height as the cross beam and on the side away from the longitudinal beam; a through hole is opened in the core of the upper roller, a second pin is installed in the through hole, a second bearing is arranged between the second pin and the upper roller, there are two second bearings and they are respectively arranged at the ends of the upper roller, and a second bearing retaining ring is arranged on the outer side of the second bearing; The drag chain is divided into an upper straight section, a curved section and a lower straight section. The upper straight section of the drag chain is supported by the drag chain bracket, and the lower straight section of the drag chain is supported by the bed.

2. A follow-up type drag chain support mechanism according to claim 1, characterized in that: The drag chain bracket includes two cross beams and a longitudinal beam, wherein the cross beam is fixedly connected to the end of the longitudinal beam, and two ends of the cross beam are respectively provided with supporting legs, and the supporting legs are fixedly connected to the end of the cross beam.

3. A follow-up type drag chain support mechanism according to claim 2, characterized in that: A V-groove roller is installed at the bottom of the leg; a through hole is provided at the core of the V-groove roller, a first pin is provided in the through hole, external threads are provided at both ends of the first pin, and the V-groove roller is fixed to the bottom of the leg by a first nut; a baffle is also provided between the leg and the first nut.

4. A follow-up drag chain support mechanism according to claim 3, characterized in that: A first bearing is arranged between the first pin shaft and the V-groove roller, and a first bearing retaining ring is also arranged on the V-groove roller outside the first bearing.

5. The follower type drag chain support mechanism according to claim 1, characterized in that: Two tensioning plates are arranged on the upper part of the fixing bracket, which are a first tensioning plate and a second tensioning plate. A first tensioning shaft is installed on the first tensioning plate, and a second tensioning shaft is installed on the second tensioning plate.

6. A follow-up type drag chain support mechanism according to claim 5, characterized in that: One end of the first tensioning shaft is connected to the first steel wire rope, and the other end of the first tensioning shaft is connected to the first tensioning plate. The first tensioning plate is provided with an internal thread, and the first tensioning shaft is provided with an external thread. The first steel wire rope is tightened by the cooperation between the internal thread of the first tensioning plate and the external thread of the first tensioning shaft.

7. The follower type drag chain support mechanism according to claim 5, characterized in that: One end of the second tensioning shaft is connected to the second steel wire rope, and the other end of the second tensioning shaft is connected to the second tensioning plate. The second tensioning plate is provided with an internal thread, and the second tensioning shaft is provided with an external thread. The second steel wire rope is tightened by the cooperation between the internal thread of the second tensioning plate and the external thread of the second tensioning shaft.

8. A working method of a follower type drag chain support mechanism as claimed in any one of claims 2 to 7, characterized in that: The following steps are involved: S1. When the crossbeam protection moves to the right, the crossbeam protection drives one end of the first steel wire rope to move to the right, and the drag chain bracket moves to the right under the action of the first steel wire rope. At the same time, the second steel wire rope limits the moving position of the drag chain bracket at the other end of the drag chain bracket. The moving speed of the drag chain traction end is the same as that of the crossbeam protection, so that the drag chain bracket and the drag chain can move synchronously; S2. When the crossbeam protection moves to the left, the crossbeam protection drives one end of the second steel wire rope to move to the left, and the drag chain bracket moves to the left under the action of the second steel wire rope. At the same time, the first steel wire rope limits the position of the drag chain bracket moving to the left. The moving speed of the drag chain traction end is the same as that of the crossbeam protection, so that the drag chain bracket and the drag chain can move synchronously; wait for the next work need to make the crossbeam protection move back and forth in a cycle.

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