Precise ventilating pipeline laser cutting machine

Abstract

The precise ventilation pipeline laser cutting machine relates to the technical field of laser cutting and comprises a side plate and a base, a bottom groove is formed in the base, an adjusting block is slidably connected into the bottom groove, a first connecting rod is connected to the surface of one side of the adjusting block, and a second connecting rod is connected to the surface of one side of the first connecting rod; a conveying assembly is arranged on the side plate, an electric guide rail is connected to the surface of one side of the side plate, a laser assembly is slidably arranged on the electric guide rail, and a centering assembly is arranged between the base and the adjusting block. According to the precise ventilation pipeline laser cutting machine, the centering assemblies are arranged to center pipelines of different specifications, and during centering, the distance between the conveying assemblies is synchronously adjusted through the first connecting rods so that the pipelines of different specifications can be conveyed; and the focus position of the laser assembly is synchronously adjusted through the second connecting rod so as to cut the pipelines of different specifications, so that the device can precisely convey and cut the pipelines of different sizes and different shapes after centering.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and particularly relates to a precision laser cutting machine for ventilation ducts. Background Art

[0002] Ventilation ducts are important facilities for realizing indoor air circulation and air quality control. They mainly introduce fresh outdoor air into the building interior through mechanical ventilation or natural ventilation systems, and at the same time discharge the polluted air indoors. Ventilation ducts are widely used in the fields of architecture, industry, environmental protection, etc.

[0003] Laser cutting is an advanced manufacturing technology that uses a high-power laser beam for material processing. It has advantages such as high precision, high speed, and good processing effect, and is gradually replacing traditional processing technologies.

[0004] Due to the wide application of ventilation ducts and different usage scenarios, the shapes of ventilation ducts in the prior art are not the same. Among them, circular and rectangular shapes are the most common, and the sizes of ventilation ducts used in different scenarios are also different. Therefore, when producing ventilation ducts, it is usually impossible to be limited to producing a certain specification of ducts, but different specifications of ducts need to be produced according to customer requirements. However, in the prior art, it is difficult to cut and process ducts while taking into account different sizes and different shapes. Summary of the Invention

[0005] The purpose of the present invention is to provide a precision laser cutting machine for ventilation ducts to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A precision laser cutting machine for ventilation ducts includes side plates and a base. A bottom groove is provided on the base, and an adjusting block is slidably connected in the bottom groove. One side surface of the adjusting block is connected with a first connecting rod, and one side surface of the first connecting rod is connected with a second connecting rod;

[0008] A conveying component is provided on the side plate. An electric guide rail is connected to one side surface of the side plate, and a laser component is slidably arranged on the electric guide rail. A centering component is provided between the base and the adjusting block. The first connecting rod is connected with the conveying component, and the first connecting rod is connected with the laser component;

[0009] When the adjusting block slides in the bottom groove, it drives the centering component to center different specifications of ducts, and synchronously adjusts the distance of the conveying component through the first connecting rod to convey different specifications of ducts, and also synchronously adjusts the focal position of the laser component through the second connecting rod to cut different specifications of ducts.

[0010] As a further preferred solution in the embodiments of the present invention, a sliding groove is provided on the side plate, a sliding block is slidably connected in the sliding groove, a first through hole is provided on the side plate, a second through hole is provided on the sliding block, and one end of the first connecting rod is fixedly connected to one side surface of the sliding block.

[0011] As a further preferred solution in the embodiments of the present invention, the conveying assembly includes a first roller shaft rotatably connected in the first through hole, one end of the first roller shaft is connected with a first conveying roller, a second roller shaft is rotatable in the second through hole, and one end of the second roller shaft is connected with a second conveying roller.

[0012] As a further preferred solution in the embodiments of the present invention, the first roller shaft passes through the first through hole and is connected with a first gear, the second roller shaft passes through the second through hole and is connected with a fourth gear, one end of the first gear is provided with, the output end of the conveying motor is connected with the first gear, a second gear and a third gear which are meshed with each other are rotatably arranged on the other side surface of the side plate, the second gear is meshed with the first gear, the third gear is meshed with the fourth gear, and one end of the third gear is rotatably connected with a telescopic rotating arm, and one end of the telescopic rotating arm is rotatably connected with one end of the fourth gear.

[0013] As a further preferred solution in the embodiments of the present invention, a driving motor is arranged on the lower surface inside the bottom groove, the output end of the driving motor is connected with a threaded rod, and the adjusting block is rotatably connected to the surface of the threaded rod.

[0014] As a further preferred solution in the embodiments of the present invention, a connecting pipe is rotatably connected to the other side surface of the adjusting block, one end of the connecting pipe is connected with a connecting strip, one end of the connecting strip is rotatably connected with a connecting bar, and one end of the connecting bar is rotatably connected with a connecting block.

[0015] As a further preferred solution in the embodiments of the present invention, the centering assembly includes an adjusting disc fixedly connected to one end of the connecting block, a base disc is rotatably connected to one end of the adjusting disc, a matching disc is fixedly connected to the other end of the adjusting disc, an inner disc is fixedly connected to one end of the matching disc, and the base disc, the matching disc and the inner disc are all fixedly connected to the upper surface of the base.

[0016] As a further preferred solution in the embodiments of the present invention, an inner groove is provided on the inner disc, a centering block is slidably connected in the inner groove, one side surface of the centering block is connected with an adjusting rod, a matching groove is provided on the matching disc, an adjusting groove is provided on the adjusting disc, and the adjusting rod is slidably matched with the matching groove and the adjusting groove respectively.

[0017] As a further preferred solution in the embodiments of the present invention, the laser assembly includes a light cylinder slidably disposed on an electric guide rail, a light core is provided at the bottom of the light cylinder, a first protective mirror and a collimating mirror are provided in the lower part of the light cylinder, a convex lens is slidably disposed in the middle part of the light cylinder, a second protective mirror is connected to the upper end of the convex lens, a third protective mirror is provided in the upper part of the light cylinder, and a nozzle is provided at the top of the light cylinder.

[0018] As a further preferred solution in the embodiments of the present invention, a guiding groove is provided on one surface of the light cylinder, a guiding column is arranged in the guiding groove, a connecting plate is slidably connected to the surface of the guiding column, one end of the connecting plate is connected to the side surface of the convex lens, the other end of the connecting plate is slidably connected to a sliding track, and one end of the second connecting rod is fixedly connected to one surface of the sliding track.

[0019] In the above technical solution, the beneficial effects of a precision ventilation duct laser cutting machine provided by the present invention are as follows:

[0020] The present invention centers different specifications of ducts through the setting of a centering assembly. When centering, the distance between the conveying assemblies is synchronously adjusted through the first connecting rod to convey different specifications of ducts, and the focal position of the laser assembly is synchronously adjusted through the second connecting rod to cut different specifications of ducts, so that the device can precisely convey and cut different sizes and shapes of ducts after centering.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to limit the present disclosure.

[0022] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and does not represent the full scope of the disclosed technology or a complete disclosure of all features. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure provided by the embodiments of the present invention;

[0025] Figure 2 Provided by the embodiments of the present invention Figure 1 The enlarged schematic diagram of part A therein;

[0026] Figure 3 Provided by the embodiments of the present invention Figure 1 The enlarged schematic diagram of part B therein;

[0027] Figure 4 Schematic diagram of the overall structure of the rear view provided by an embodiment of the present invention;

[0028] Figure 5 Schematic diagram of the structure from another perspective provided by an embodiment of the present invention;

[0029] Figure 6 Provided by an embodiment of the present invention Figure 5 Enlarged structure schematic diagram at position C in

[0030] Figure 7 Exploded view of the base plate provided by an embodiment of the present invention;

[0031] Figure 8 Schematic diagram of the internal structure of the light cylinder provided by an embodiment of the present invention.

[0032] Explanation of reference numerals:

[0033] 1, side plate; 101, sliding groove; 102, sliding block; 2, conveying motor; 201, first gear; 202, second gear; 203, third gear; 204, fourth gear; 205, telescopic rotating arm; 3, first conveying roller; 301, first roller shaft; 302, second conveying roller; 303, second roller shaft; 4, base; 401, bottom groove; 402, driving motor; 403, threaded rod; 404, adjusting block; 405, first connecting rod; 406, second connecting rod; 5, connecting pipe; 501, connecting strip; 502, connecting bar; 503, connecting block; 6, base plate; 601, adjusting plate; 602, adjusting groove; 603, matching plate; 604, matching groove; 605, inner plate; 606, inner groove; 607, centering block; 608, adjusting rod; 7, electric guide rail; 701, optical core; 702, light cylinder; 703, first protective mirror; 704, collimating mirror; 705, convex lens; 706, second protective mirror; 707, third protective mirror; 708, nozzle; 8, guiding groove; 801, guiding column; 802, connecting plate; 803, sliding track. Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0035] Please refer to Figure 1 - Figure 8, A precision ventilation duct laser cutting machine, including side plates 1 and a base 4. There is a bottom groove 401 on the base 4. A regulating block 404 is slidably connected in the bottom groove 401. One side surface of the regulating block 404 is connected to a first connecting rod 405, and one side surface of the first connecting rod 405 is connected to a second connecting rod 406;

[0036] A conveying component is provided on the side plate 1. One side surface of the side plate 1 is connected to an electric guide rail 7. A laser component is slidably arranged on the electric guide rail 7. A centering component is provided between the base 4 and the regulating block 404. The first connecting rod 405 is connected to the conveying component, and the first connecting rod 405 is connected to the laser component;

[0037] When the regulating block 404 slides in the bottom groove 401, it drives the centering component to center pipes of different specifications, and synchronously adjusts the spacing of the conveying component through the first connecting rod 405 to convey pipes of different specifications, and also synchronously adjusts the focal position of the laser component through the second connecting rod 406 to cut pipes of different specifications.

[0038] In the present invention, by setting the centering component to center pipes of different specifications, during centering, the spacing of the conveying component is synchronously adjusted through the first connecting rod 405 to convey pipes of different specifications, and the focal position of the laser component is synchronously adjusted through the second connecting rod 406 to cut pipes of different specifications, so that the device can convey and cut pipes of different sizes and shapes after centering.

[0039] In a further embodiment provided by the present invention, a sliding groove 101 is provided on the side plate 1. A sliding block 102 is slidably connected in the sliding groove 101. A first through hole is provided on the side plate 1, and a second through hole is provided on the sliding block 102. One end of the first connecting rod 405 is fixedly connected to one side surface of the sliding block 102.

[0040] In a further embodiment provided by the present invention, the conveying component includes a first roller shaft 301 rotatably connected in the first through hole, and one end of the first roller shaft 301 is connected to a first conveying roller 3. A second roller shaft 303 rotates in the second through hole, and one end of the second roller shaft 303 is connected to a second conveying roller 302.

[0041] In a further embodiment provided by the present invention, the first roller shaft 301 passes through the first through hole and is connected to a first gear 201. The second roller shaft 303 passes through the second through hole and is connected to a fourth gear 204. One end of the first gear 201 is provided with, and the output end of the conveying motor 2 is connected to the first gear 201. On the other side surface of the side plate 1, a second gear 202 and a third gear 203 that mesh with each other are rotatably arranged. The second gear 202 meshes with the first gear 201, the third gear 203 meshes with the fourth gear 204, and one end of the third gear 203 is rotatably connected to a telescopic rotating arm 205. One end of the telescopic rotating arm 205 is rotatably connected to one end of the fourth gear 204.

[0042] Specifically, the conveying motor 2 drives the first gear 201 and the first conveying roller 3 to rotate. The first gear 201 drives the second gear 202 to rotate, the second gear 202 drives the third gear 203 to rotate, and the third gear 203 drives the fourth gear 204 to rotate, thereby driving the second conveying roller 302 to rotate, so that the first conveying roller 3 and the second conveying roller 302 rotate in opposite directions respectively to convey the pipe clamped between them.

[0043] Furthermore, the sliding block 102 slides in the sliding groove 101 to drive the second conveying roller 302 to move up and down, thereby adjusting the distance between the first conveying roller 3 and the second conveying roller 302 to adapt to pipes of different specifications.

[0044] Even further, when the sliding block 102 slides, the fourth gear 204 will move along with it. The telescopic swing arm 205 moves up and down on the fourth gear 204 and expands and contracts, so that the fourth gear 204 can maintain the meshing relationship with the third gear 203.

[0045] In an embodiment further provided by the present invention, a driving motor 402 is provided on the lower surface inside the bottom groove 401. The output end of the driving motor 402 is connected to a threaded rod 403, and the adjusting block 404 is rotatably connected to the surface of the threaded rod 403.

[0046] In an embodiment further provided by the present invention, the other side surface of the adjusting block 404 is rotatably connected to a connecting pipe 5. One end of the connecting pipe 5 is connected to a connecting strip 501. One end of the connecting strip 501 is rotatably connected to a connecting bar 502, and one end of the connecting bar 502 is rotatably connected to a connecting block 503.

[0047] Furthermore, both the connecting bar 502 and the connecting block 503 are two, and are mirror-symmetrical about the vertical center line of the base 4.

[0048] In an embodiment further provided by the present invention, the centering assembly includes an adjusting disk 601 fixedly connected to one end of the connecting block 503. One end of the adjusting disk 601 is rotatably connected to a base disk 6, and the other end of the adjusting disk 601 is fixedly connected to a matching disk 603. One end of the matching disk 603 is fixedly connected to an inner disk 605, and the base disk 6, the matching disk 603, and the inner disk 605 are all fixedly connected to the upper surface of the base 4.

[0049] Furthermore, both the adjusting disk 601 and the matching disk 603 are two, and are mirror-symmetrical about the center point of the inner disk 605.

[0050] Even further, the centers of the base disk 6, the adjusting disk 601, the matching disk 603, and the inner disk 605 are all hollow structures so that the pipe can pass through.

[0051] Specifically, both of the two adjusting disks 601 are rotatably arranged. One of the adjusting disks 601 rotates between the base disk 6 and one of the mating disks 603, and the other adjusting disk 601 rotates on the surface of the other mating disk 603.

[0052] In an embodiment further provided by the present invention, an inner groove 606 is provided on the inner disk 605. A centering block 607 is slidably connected in the inner groove 606. One side surface of the centering block 607 is connected with an adjusting rod 608. A mating groove 604 is provided on the mating disk 603, and an adjusting groove 602 is provided on the adjusting disk 601. The adjusting rod 608 is slidably engaged with the mating groove 604 and the adjusting groove 602 respectively.

[0053] Further, there are four centering blocks 607 and four adjusting rods 608. They are grouped in pairs. The two adjusting rods 608 in each group face the same direction, while the directions of each group are opposite to each other.

[0054] Furthermore, there are two mating grooves 604 on each mating disk 603 and two adjusting grooves 602 on each adjusting disk 601, that is, there are a total of four mating grooves 604 and adjusting grooves 602.

[0055] Specifically, in addition to being symmetrical, the two adjusting disks 601 and the two mating disks 603 also have a difference of rotating ninety degrees around the center point of the inner disk 605.

[0056] Specifically, the space formed between the four centering blocks 607 is rectangular, so that the centering blocks 607 can not only center the circular pipe-shaped pipeline, but also center the rectangular pipe-shaped pipeline.

[0057] In an embodiment further provided by the present invention, the laser assembly includes a light cylinder 702 slidably arranged on the electric guide rail 7. A light core 701 is provided at the bottom of the light cylinder 702. A first protective mirror 703 and a collimating mirror 704 are provided in the lower part of the interior of the light cylinder 702. A convex lens 705 is slidably arranged in the middle part of the interior of the light cylinder 702. A second protective mirror 706 is connected to the upper end of the convex lens 705. A third protective mirror 707 is provided in the upper part of the interior of the light cylinder 702. A nozzle 708 is provided at the top of the light cylinder 702.

[0058] Specifically, the electric guide rail 7 drives the laser assembly thereon to move horizontally for cutting. The light core 701 transmits the laser light source. The first protective mirror 703 prevents dust from entering the interior. The collimating mirror 704 converts the point light into a parallel light source. The convex lens 705 focuses the light source to form a laser. The second protective mirror 706 and the third protective mirror 707 block the slag during perforation. The nozzle 708 emits the laser.

[0059] Further, moving the convex lens 705 up and down can change the focal position of the laser, thereby changing the cutting point of the laser to obtain a better cutting effect.

[0060] In an embodiment further provided by the present invention, a guiding groove 8 is provided on one side surface of the light cylinder 702. A guiding post 801 is arranged in the guiding groove 8. A connecting plate 802 is slidably connected to the surface of the guiding post 801. One end of the connecting plate 802 is connected to the side surface of the convex lens 705. The other end of the connecting plate 802 is slidably connected to a sliding track 803. One end of the second connecting rod 406 is fixedly connected to one side surface of the sliding track 803.

[0061] In the present invention, first, start the conveying motor 2 to drive the first gear 201 and the first conveying roller 3 to rotate. The first gear 201 drives the second gear 202 to rotate. The second gear 202 drives the third gear 203 to rotate. The third gear 203 drives the fourth gear 204 to rotate, thereby driving the second conveying roller 302 to rotate, so that the first conveying roller 3 and the second conveying roller 302 rotate in opposite directions respectively to convey the pipe clamped between them. Insert the pipe into the base plate 6. Start the driving motor 402 to drive the threaded rod 403 to rotate. The adjusting block 404 converts the rotational motion into a lifting motion, so that the adjusting block 404 moves up and down, thereby driving the connecting rod 502 to rotate, and then the connecting block 503 moves, so that the adjusting disk 601 rotates on the base plate 6. Thus, under the drive of the adjusting groove 602, the adjusting rod 608 slides in the mating groove 604, and then the centering block 607 moves to be close to the surface of the pipe for centering. Subsequently, push the pipe to make it enter between the first conveying roller 3 and the second conveying roller 302 for conveying; synchronously, when the adjusting block 404 moves up and down, it will also drive the sliding block 102 to slide in the sliding groove 101 under the action of the first connecting rod 405, so as to drive the second conveying roller 302 to move up and down, thereby adjusting the distance between the first conveying roller 3 and the second conveying roller 302 to adapt to pipes of different specifications; synchronously, when the adjusting block 404 moves up and down, it will also drive the connecting plate 802 to slide on the guiding post 801 under the action of the second connecting rod 406, so as to change the position of the convex lens 705, and further change the focal position of the laser, thereby changing the cutting point of the laser, making the laser focal position focus on the surface of the pipe, so as to cut pipes of different specifications to obtain a better cutting effect.

[0062] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A precision ventilation duct laser cutting machine, comprising a side plate (1) and a base (4), characterized in that: The base (4) is provided with a bottom groove (401), an adjusting block (404) is slidably connected in the bottom groove (401), a first connecting rod (405) is connected to a surface of one side of the adjusting block (404), and a second connecting rod (406) is connected to a surface of one side of the first connecting rod (405); The side plate (1) is provided with a conveying assembly, a surface of one side of the side plate (1) is connected to an electric guide rail (7), a laser assembly is slidably arranged on the electric guide rail (7), a centering assembly is provided between the base (4) and the adjustment block (404), the first connecting rod (405) is connected to the conveying assembly, and the first connecting rod (405) is connected to the laser assembly; When the adjustment block (404) slides in the bottom groove (401), it drives the centering component to center the pipes of different specifications, and synchronously adjusts the spacing of the conveying component through the first connecting rod (405) to convey the pipes of different specifications, and also synchronously adjusts the focal position of the laser component through the second connecting rod (406) to cut the pipes of different specifications.

2. The precision ventilation duct laser cutting machine according to claim 1 is characterized in that: The side plate (1) is provided with a sliding groove (101), a sliding block (102) is slidably connected in the sliding groove (101), a first through hole is provided on the side plate (1), a second through hole is provided on the sliding block (102), and one end of the first connecting rod (405) is fixedly connected to a side surface of the sliding block (102).

3. The precision ventilation duct laser cutting machine according to claim 2 is characterized in that: The conveying assembly comprises a first roller shaft (301) rotatably connected in a first through hole, one end of the first roller shaft (301) is connected to a first conveying roller (3), and a second roller shaft (303) rotatably in the second through hole, one end of the second roller shaft (303) is connected to a second conveying roller (302).

4. The precision ventilation duct laser cutting machine according to claim 3 is characterized in that: The first roller (301) passes through the first through hole and is connected to the first gear (201); the second roller (303) passes through the second through hole and is connected to the fourth gear (204); one end of the first gear (201) is provided with an output end of the conveying motor (2) connected to the first gear (201); the other side surface of the side plate (1) is rotatably provided with a second gear (202) and a third gear (203) meshing with each other; the second gear (202) meshes with the first gear (201); the third gear (203) meshes with the fourth gear (204); one end of the third gear (203) is rotatably connected to a telescopic rotary arm (205); one end of the telescopic rotary arm (205) is rotatably connected to one end of the fourth gear (204).

5. The precision ventilation duct laser cutting machine according to claim 4 is characterized in that: A driving motor (402) is arranged on the lower surface of the bottom groove (401), the output end of the driving motor (402) is connected to a threaded rod (403), and the adjustment block (404) is rotatably connected to the surface of the threaded rod (403).

6. The precision ventilation duct laser cutting machine according to claim 5, characterized in that: The other side surface of the adjustment block (404) is rotatably connected to a connection tube (5), one end of the connection tube (5) is connected to a connection bar (501), one end of the connection bar (501) is rotatably connected to a connection bar (502), and one end of the connection bar (502) is rotatably connected to a connection block (503).

7. The precision ventilation duct laser cutting machine according to claim 6, characterized in that: The centering assembly comprises an adjustment disk (601) fixedly connected to one end of the connection block (503), and one end of the adjustment disk (601) is rotatably connected to a base disk (6), and the other end of the adjustment disk (601) is fixedly connected to a matching disk (603), and one end of the matching disk (603) is fixedly connected to an inner disk (605), and the base disk (6), the matching disk (603) and the inner disk (605) are all fixedly connected to the upper surface of the base (4).

8. The precision ventilation duct laser cutting machine according to claim 7, characterized in that: The inner disk (605) is provided with an inner groove (606), a centering block (607) is slidably connected in the inner groove (606), an adjustment rod (608) is connected to one side surface of the centering block (607), a matching groove (604) is provided on the matching disk (603), an adjustment groove (602) is provided on the adjustment disk (601), and the adjustment rod (608) is slidably matched with the matching groove (604) and the adjustment groove (602) respectively.

9. The precision ventilation duct laser cutting machine according to claim 8, characterized in that: The laser assembly comprises a light tube (702) slidably arranged on an electric guide rail (7), and an optical core (701) is arranged at the bottom of the light tube (702), and a first protective mirror (703) and a collimating mirror (704) are arranged at the lower part of the light tube (702), and a convex lens (705) is slidably arranged in the middle part of the light tube (702), and the upper end of the convex lens (705) is connected to a second protective mirror (706), and a third protective mirror (707) is arranged at the upper part of the light tube (702), and a nozzle (708) is arranged at the top of the light tube (702).

10. The precision ventilation duct laser cutting machine according to claim 9, characterized in that: A guide groove (8) is provided on one side surface of the light tube (702), a guide column (801) is provided in the guide groove (8), a connecting plate (802) is slidably connected to the surface of the guide column (801), one end of the connecting plate (802) is connected to the side surface of the convex lens (705), the other end of the connecting plate (802) is slidably connected to a sliding track (803), and one end of the second connecting rod (406) is fixedly connected to the surface of one side of the sliding track (803).

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