A silent steel telescopic slide rail and a manufacturing method thereof

Abstract

The present invention relates to the field of slide rail technology, specifically to a silent steel telescopic slide rail and a manufacturing method thereof, comprising a lower slide rail base and an upper slide rail, wherein a first slide groove is provided on the lower slide rail base, a third slide groove is provided below the upper slide rail, a sliding block is provided in the third slide groove for sliding, a plurality of auxiliary rolling mechanisms are provided on both sides of the lower end face of the upper slide rail, and a positioning mechanism is also provided on the upper slide rail; a second slide groove is provided on both sides of the inner wall of the first slide groove, a second slider is provided on both sides of the slider, the inner side surface of the second slide groove is a smooth arc surface structure, and both sides of the second slider are also smooth arc surface structures, a fixed closing mechanism is provided at the open end of the first slide groove, and rolling grooves are provided on both sides of the upper end face of the lower slide rail base. The present invention improves the principle of sliding through steel balls in traditional slide rails, so that the improved slide rail makes very little noise when sliding, achieving a silent effect, and at the same time, the slide rail can selectively slide in both directions according to needs.

Description

Technical Field

[0001] The invention relates to a slide rail, in particular to a silent steel telescopic slide rail and a manufacturing method thereof, belonging to the technical field of slide rails. Background Art

[0002] Slide rails, also known as guide rails and slideways, refer to the hardware connection parts fixed on the cabinet of furniture for the drawers or cabinet panels of furniture to move in and out. Slide rails are suitable for connecting drawers of wooden and steel drawers such as cabinets, furniture, document cabinets, bathroom cabinets, etc. There are two types of slide rails, one is for furniture and daily hardware, and the other is the super-large slide rail for industrial use. This type of slide rail has a larger load-bearing capacity and is used for industrial purposes such as modified cars, RVs, cabinets, fire trucks, etc.

[0003] The existing slide rail structure of the front and rear push-pull structure is composed of multiple rails, which slide and cooperate with each other. Sliding balls are installed on the slide rails to make the slide rails slide smoothly. The multiple slide rails in the above slide rail structure will collide with each other during the sliding process, and the mutual collision will inevitably produce a loud impact sound, which will greatly reduce the use quality and comfort of the slide rail, and at the same time the flexibility is low.

[0004] Therefore, it is urgent to improve the slide rail to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a silent steel telescopic slide rail and a manufacturing method thereof, which improves the principle of sliding through steel balls in a traditional slide rail so that the improved slide rail makes very little noise when sliding, achieving a silent effect, and at the same time enables the slide rail to perform bidirectional selective sliding according to demand.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A silent steel telescopic slide rail, comprising a lower slide rail base and an upper slide rail, wherein a first slide groove is provided on the lower slide rail base, a third slide groove is provided below the upper slide rail, a sliding block is slidably provided in the third slide groove, a plurality of auxiliary rolling mechanisms are provided on both sides of the lower end surface of the upper slide rail, and a positioning mechanism is also provided on the upper slide rail;

[0008] Second slide grooves are provided on both sides of the inner wall of the first slide groove, second sliders are provided on both sides of the sliding block, the inner side surface of the second slide groove is a smooth arc surface structure, and the two sides of the second slider are also smooth arc surface structures. A fixed closing mechanism is provided at the open end of the first slide groove, and rolling grooves are provided on both sides of the upper end surface of the lower slide rail base.

[0009] Preferably, the sliding block includes a first sliding block and a second sliding block, the first sliding block slides in the third sliding groove, the second sliding block slides in the first sliding groove, the second sliding block is arranged on both sides of the second sliding block, the two ends of the third sliding groove are evenly distributed through the two ends of the upper sliding rail, and the end of the first sliding groove away from the opening is a closed structure.

[0010] Preferably, fourth slide grooves are provided on both sides of the inner wall of the third slide groove, fourth sliding blocks are provided on both sides of the first sliding block, the inner side surface of the fourth slide groove is an arc surface structure, and the outer side of the fourth sliding block is also an arc surface structure.

[0011] Preferably, the auxiliary rolling mechanism includes a first groove arranged on both sides of the lower end surface of the upper slide rail and a rolling bearing arranged in the first groove, the rolling bearing is rotatably connected in the first groove, the upper half of the rolling bearing rotates in the first groove, and the lower half of the rolling bearing slides in the rolling groove, and the inner wall of the rolling groove is attached with a first shock-absorbing buffer pad.

[0012] Preferably, a second groove is formed on the lower end surface of the second sliding block, a second rolling bearing is rotatably connected in the second groove, a second rolling groove is formed on the bottom surface of the first sliding groove, the upper half of the second rolling bearing rotates in the second groove, the lower half of the second rolling bearing slides in the second rolling groove, and a second shock-absorbing buffer pad is attached to the inner wall of the second rolling groove.

[0013] Preferably, the fixed closing mechanism includes a first threaded hole, a second threaded hole, a first threaded rod and a second threaded rod, the first threaded hole and the second threaded hole are respectively communicated with the rolling groove and the second sliding groove, the first threaded hole and the second threaded hole both extend to the outside of the lower sliding rail base, and the first threaded rod and the second threaded rod are respectively screwed and connected with the first threaded hole and the second threaded hole.

[0014] Preferably, the positioning mechanism includes a third threaded hole and a third threaded rod arranged on the outside of one end of the upper slide rail, a fourth threaded hole is arranged on the outside of the first sliding block, and the third threaded hole and the fourth threaded hole are connected through the third threaded rod.

[0015] Preferably, the bottom surface of the rolling bearing contacts the bottom surface of the rolling groove, and the two side surfaces of the rolling bearing do not contact the two side surfaces of the rolling groove.

[0016] Preferably, the first slide groove and the second slide groove are both provided with rubber shock-absorbing pads at one end away from the opening of the lower slide rail base, and the tail end of the third slide groove is also provided with the rubber shock-absorbing pad.

[0017] A method for manufacturing a silent steel telescopic slide rail comprises the following steps:

[0018] S1: Production of the lower slide rail base: Select a steel plate with a certain thickness, fix the steel plate, use a slotting machine to slot the first slide groove, then slot the second slide groove on both sides of the inner wall of the first slide groove, and grind it into an arc surface, and finally use the slotting machine again to slot the rolling groove and the second rolling groove at the bottom of the first slide groove and on both sides of the upper end surface of the steel plate. After all the slide grooves are opened, attach shock-absorbing pads in the rolling groove and the second rolling groove, and finally use a punching machine to process threaded holes at the rolling groove and the second slide groove, screw and connect threaded rods in the threaded holes, thereby finally completing the production of the lower slide rail base;

[0019] S2: Production of upper slide rail: select a steel plate of a certain thickness and a square steel block, use a slotting machine to slot the third slide groove, then slot the fourth slide groove on both sides of the third slide groove, then open a plurality of the first grooves on both sides of the end surface of the steel plate, install the rolling bearings on the grooves, then cut the upper half of the square steel block symmetrically, leaving the middle part, the size of the middle part should be connected to the third slide groove, and the fourth slider should be machined and polished during cutting, then the second slider is machined on the lower half of the square steel block, the second slider, the fourth slider and the end surface of the fourth slide groove are all polished into arc surfaces, then the second groove is opened at the bottom of the square steel block, the second rolling bearing is rotatably connected in the second groove, the third threaded hole and the fourth threaded hole are machined by a punching machine, and the third threaded rod is connected in the third threaded hole, thereby completing the production of the upper slide rail;

[0020] S3: Slide rail connection: The upper slide rail and the lower slide rail base are slidably connected through the sliding block. After the second sliding block slides into the first slide groove, the first threaded rod and the second threaded rod are rotated so that the first threaded rod and the second threaded rod close the opening of the first slide groove, thereby completing the connection of the slide rail.

[0021] The present invention has at least the following beneficial effects:

[0022] 1. By improving the principle of sliding through steel balls in traditional slide rails and setting up multiple shock-absorbing buffer pads, the improved slide rails make very little noise when sliding, achieving a silent effect. At the same time, the upper slide rail can selectively slide in both directions on the lower slide rail base as needed, thereby improving the flexibility and practicality of the telescopic slide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the lower slide rail base of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper slide rail of the present invention;

[0027] Figure 4 It is a connection cross-sectional schematic diagram of the present invention;

[0028] Figure 5 is a cross-sectional view of the upper slide rail of the present invention;

[0029] Figure 6 This is a cross-sectional view of the lower rail base of the present invention

[0030] Figure 7 A cross-sectional view of the sliding block of the present invention

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the sliding block of the present invention.

[0032] In the figure, 1-lower slide rail base, 2-upper slide rail, 3-first slide groove, 4-third slide groove, 5-second slide groove, 6-second slider, 7-fixed closing mechanism, 701-first threaded hole, 702-second threaded hole, 703-first threaded rod, 704-second threaded rod, 8-sliding block, 801-first sliding block, 802-second sliding block, 9-auxiliary rolling mechanism, 901-first groove, 902-rolling bearing, 10-rolling groove, 11-positioning mechanism, 12-fourth slide groove, 13-fourth slider, 14-first shock-absorbing buffer pad, 15-second groove, 16-second rolling bearing, 17-second rolling groove, 18-second shock-absorbing buffer pad, 19-third threaded hole, 20-third threaded rod, 21-fourth threaded hole, 22-rubber shock-absorbing pad. DETAILED DESCRIPTION

[0033] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0034] like Figure 1-Figure 8As shown, the silent steel telescopic slide rail provided in this embodiment includes a lower slide rail base 1 and an upper slide rail 2, a first slide groove 3 is provided on the lower slide rail base 1, a third slide groove 4 is provided below the upper slide rail 2, a sliding block 8 is slidably provided in the third slide groove 4, the sliding block 8 includes a first sliding block 801 and a second sliding block 802, the first sliding block 801 slides in the third slide groove 4, the second sliding block 802 slides in the first slide groove 3, the second slider 6 is provided on both sides of the second sliding block 802, the two ends of the third slide groove 4 are evenly distributed through the two ends of the upper slide rail 2, and the end of the first slide groove 3 away from the opening is a closed structure;

[0035] A plurality of auxiliary rolling mechanisms 9 are arranged on both sides of the lower end surface of the upper slide rail 2. The auxiliary rolling mechanisms 9 include first grooves 901 arranged on both sides of the lower end surface of the upper slide rail 2 and rolling bearings 902 arranged in the first grooves 901. The rolling bearings 902 are rotatably connected in the first grooves 901. The upper half of the rolling bearings 902 rotate in the first grooves 901. The lower half of the rolling bearings 902 slides in the rolling grooves 10. The inner wall of the rolling grooves 10 is attached with first shock-absorbing cushions 14. The arrangement of the first shock-absorbing cushions 14 reduces the noise of the rolling bearings 902 when rolling. The rolling of the rolling bearings 902 in the rolling grooves 10 improves the smoothness of the sliding between the upper slide rail 2 and the lower slide rail base 1.

[0036] The upper slide rail 2 is also provided with a positioning mechanism 11, which includes a third threaded hole 19 and a third threaded rod 20 arranged on the outer side of one end of the upper slide rail 2. A fourth threaded hole 21 is arranged on the outer side of the first sliding block 801. The third threaded hole 19 and the fourth threaded hole 21 are connected through the third threaded rod 20. When the two-way sliding is not needed, the sliding block 8 is fixed by the third threaded rod 20 penetrating the third threaded hole 19 and the fourth threaded hole 21. When the two-way sliding option is needed, the third threaded rod 20 is rotated to disengage the third threaded rod 20 from the fourth threaded hole 21, so that the two-way sliding of the slide rail can be realized when sliding, thereby improving the flexibility of the slide rail.

[0037] Second slide grooves 5 are provided on both sides of the inner wall of the first slide groove 3, and second sliders 6 are provided on both sides of the sliding block 8. The inner side surface of the second slide groove 5 is a smooth arc surface structure, and the two sides of the second slider 6 are also smooth arc surface structures. A fixed closing mechanism 7 is provided at the open end of the first slide groove 3, and the fixed closing mechanism 7 includes a first threaded hole 701, a second threaded hole 702, a first threaded rod 703 and a second threaded rod 704. The first threaded hole 701 and the second threaded hole 702 are respectively communicated with the rolling groove 10 and the second slide groove 5. The first threaded hole 701 and the second threaded hole 702 both extend to the outside of the lower slide rail base 1. The first The threaded rod 703 and the second threaded rod 704 are respectively screwed and connected to the first threaded hole 701 and the second threaded hole 702, and the fixed closing mechanism 7 prevents the upper slide rail 2 from detaching after installation. The upper slide rail 2 is slidably connected with the lower slide rail base 1 through the sliding block 8. After the second sliding block 802 slides into the first slide groove 3, the first threaded rod 703 and the second threaded rod 704 are rotated to close the opening of the first slide groove 3, thereby completing the connection of the slide rails; rolling grooves 10 are provided on both sides of the upper end surface of the lower slide rail base 1, and the rolling grooves 10 are used for the rolling of the rolling bearing 10.

[0038] In this embodiment, if Figure 5 and Figure 6 As shown, fourth slots 12 are provided on both sides of the inner wall of the third slot 4, fourth sliders 13 are provided on both sides of the first sliding block 801, the inner side surface of the fourth slot 12 is an arc surface structure, and the outer side of the fourth slider 13 is also an arc surface structure. The setting of the fourth slider 13 and the fourth slot 12 enables the first sliding block 801 to have higher stability when sliding in the third slot 4, and the setting of the arc surface structure enables the slider and the slot to slide more smoothly.

[0039] In this embodiment, if Figure 5 and Figure 6 As shown, a second groove 15 is provided on the lower end surface of the second sliding block 802, and a second rolling bearing 16 is rotatably connected in the second groove 15. A second rolling groove 17 is provided on the bottom surface of the first sliding groove 3. The upper half of the second rolling bearing 16 rotates in the second groove 15, and the lower half of the second rolling bearing 16 slides in the second rolling groove 17. A second shock-absorbing buffer pad 18 is attached to the inner wall of the second rolling groove 17. The setting of the second shock-absorbing buffer pad 18 can reduce the noise during rolling when the second rolling bearing 16 rolls. By utilizing the setting of the second rolling bearing 16 rolling in the second rolling groove 17, the upper slide rail 2 and the lower slide rail base 1 have a smoother sliding property.

[0040] In this embodiment, if Figure 4As shown, the bottom surface of the rolling bearing 902 contacts the bottom surface of the rolling groove 10, and the two side surfaces of the rolling bearing 902 do not contact the two side surfaces of the rolling groove 10, which can ensure that the rolling bearing 902 rolls normally, thereby improving the smoothness of the sliding of the slide rail.

[0041] In this embodiment, if Figure 2 and Figure 3 As shown, the first slide groove 3 and the second slide groove 5 are both provided with a rubber shock-absorbing pad 22 at one end away from the opening of the lower slide rail base 1, and the tail end of the third slide groove 4 is also provided with a rubber shock-absorbing pad 22. The setting of the rubber shock-absorbing pad 22 enables the upper slide rail 2 to have a good shock-absorbing effect when sliding on the lower slide rail base 1, thereby effectively reducing the impact sound and reducing the sliding noise.

[0042] A method for manufacturing a silent steel telescopic slide rail comprises the following steps:

[0043] S1: Production of the lower slide rail base: Select a steel plate with a certain thickness, fix the steel plate, and use a slotting machine to slot the first slide groove 3, then slot the second slide groove 5 on both sides of the inner wall of the first slide groove 3, and grind them into arc surfaces, and finally use the slotting machine again to slot the rolling groove 10 and the second rolling groove 17 at the bottom of the first slide groove 3 and on both sides of the upper end surface of the steel plate. After all the slide grooves are opened, attach the shock-absorbing pads in the rolling groove 10 and the second rolling groove 17, and finally use a punching machine to process threaded holes at the rolling groove 10 and the second slide groove 5, screw and connect the threaded rods in the threaded holes, and finally complete the production of the lower slide rail base 1;

[0044] S2: Production of upper slide rail: Select a steel plate of a certain thickness and a square steel block, use a slotting machine to slot the third slide groove 4, then slot the fourth slide groove 12 on both sides of the third slide groove 4, then open a plurality of first grooves 901 on both sides of the end surface of the steel plate, install rolling bearings 902 on the grooves 901, then cut the upper half of the square steel block symmetrically, leaving the middle part, the size of the middle part should be connected to the third slide groove 4, and the fourth slider 13 should be processed and polished during cutting, then the second slider 6 is processed on the lower half of the square steel block, the end surfaces of the second slider 6, the fourth slider 13 and the fourth slide groove 12 are all polished into arc surfaces, then the second groove 15 is opened at the bottom of the square steel block, the second rolling bearing 16 is rotatably connected in the second groove 15, the third threaded hole 19 and the fourth threaded hole 21 are processed by a punching machine, and the third threaded rod 20 is connected in the third threaded hole 19, thereby completing the production of the upper slide rail 2;

[0045] S3: Slide rail connection: The upper slide rail 2 is slidably connected with the lower slide rail base 1 through the sliding block 8. After the second sliding block 802 slides into the first slide groove 3, the first threaded rod 703 and the second threaded rod 704 are rotated so that the first threaded rod 703 and the second threaded rod 704 close the opening of the first slide groove 3, thereby completing the connection of the slide rail.

[0046] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0047] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0048] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A silent steel telescopic slide rail, comprising a lower slide rail base (1) and an upper slide rail (2), characterized in that: The lower slide rail base (1) is provided with a first slide groove (3), the lower portion of the upper slide rail (2) is provided with a third slide groove (4), a sliding block (8) is slidably arranged in the third slide groove (4), a plurality of auxiliary rolling mechanisms (9) are arranged on both sides of the lower end surface of the upper slide rail (2), and a positioning mechanism (11) is also arranged on the upper slide rail (2); Second slide grooves (5) are arranged on both sides of the inner wall of the first slide groove (3), and second sliding blocks (6) are arranged on both sides of the sliding block (8). The inner side surface of the second slide groove (5) is a smooth arc surface structure, and the two sides of the second sliding block (6) are also smooth arc surface structures. A fixed closing mechanism (7) is arranged at the open end of the first slide groove (3), and rolling grooves (10) are arranged on both sides of the upper end surface of the lower slide rail base (1). The sliding block (8) includes a first sliding block (801) and a second sliding block (802). The first sliding block (801) slides in the third slide groove (4), and the second sliding block (802) slides in the first slide groove (3). The second sliding block (6) is arranged On both sides of the second sliding block (802), both ends of the third slide groove (4) are evenly distributed and penetrate the two ends of the upper slide rail (2); the end of the first slide groove (3) away from the opening is a closed structure; both sides of the inner wall of the third slide groove (4) are provided with fourth slide grooves (12); both sides of the first sliding block (801) are provided with fourth sliders (13); the inner side surface of the fourth slide groove (12) is an arc surface structure; the outer side surface of the fourth slider (13) is also an arc surface structure; the auxiliary rolling mechanism (9) includes first grooves (901) arranged on both sides of the lower end surface of the upper slide rail (2) and rolling bearings (902) arranged in the first grooves (901); the rolling bearings (902) are arranged in the first grooves (901); The first sliding groove (3) is rotatably connected to the second sliding block (802), the upper half of the rolling bearing (902) rotates in the first groove (901), the lower half of the rolling bearing (902) slides in the rolling groove (10), the inner wall of the rolling groove (10) is attached with a first shock-absorbing buffer pad (14), the lower end surface of the second sliding block (802) is provided with a second groove (15), the second rolling bearing (16) is rotatably connected in the second groove (15), the bottom surface of the first sliding groove (3) is provided with a second rolling groove (17), the upper half of the second rolling bearing (16) rotates in the second groove (15), and the lower half of the second rolling bearing (16) slides in the second rolling groove (17). The second rolling groove (17) is slidable therein, a second shock-absorbing cushion (18) is attached to the inner wall of the second rolling groove (17), the fixed closing mechanism (7) comprises a first threaded hole (701), a second threaded hole (702), a first threaded rod (703) and a second threaded rod (704), the first threaded hole (701) and the second threaded hole (702) are respectively connected to the rolling groove (10) and the second sliding groove (5), the first threaded hole (701) and the second threaded hole (702) are both extended to the outside of the lower sliding rail base (1), the first threaded rod (703) and the second threaded rod (704) are respectively screwed and connected to the first threaded hole (701) and the second threaded hole (702),The first slide groove (3) and the second slide groove (5) are both provided with a rubber shock-absorbing pad (22) at one end away from the opening of the lower slide rail base (1), and the tail end of the third slide groove (4) is also provided with the rubber shock-absorbing pad (22).

2. The silent steel telescopic slide rail according to claim 1, characterized in that: The positioning mechanism (11) comprises a third threaded hole (19) and a third threaded rod (20) arranged on the outside of one end of the upper slide rail (2); a fourth threaded hole (21) is arranged on the outside of the first sliding block (801); the third threaded hole (19) and the fourth threaded hole (21) are connected through the third threaded rod (20).

3. The silent steel telescopic slide rail according to claim 2, characterized in that: The bottom surface of the rolling bearing (902) contacts the bottom surface of the rolling groove (10), and the two side surfaces of the rolling bearing (902) do not contact the two side surfaces of the rolling groove (10).

4. A method for manufacturing a silent steel telescopic slide rail, used for manufacturing the silent steel telescopic slide rail as claimed in claim 3, characterized in that: The steps include: S1: Production of the lower slide rail base: Select a steel plate with a certain thickness, fix the steel plate, and use a slotting machine to slot the first slide groove (3), then slot the second slide groove (5) on both sides of the inner wall of the first slide groove (3), and grind them into arc surfaces. Finally, use the slotting machine again to slot the rolling groove (10) and the second rolling groove (17) at the bottom of the first slide groove (3) and on both sides of the upper surface of the steel plate. After all the slide grooves are opened, attach shock-absorbing pads in the rolling groove (10) and the second rolling groove (17). Finally, use a punching machine to process threaded holes in the rolling groove (10) and the second slide groove (5), screw and connect threaded rods in the threaded holes, and finally complete the production of the lower slide rail base (1); S2: Upper slide rail production: Select a steel plate of a certain thickness and a square steel block, use a slotting machine to slot the third slide groove (4), then slot the fourth slide groove (12) on both sides of the third slide groove (4), then open a plurality of the first grooves (901) on both sides of the upper surface of the steel plate, install the rolling bearing (902) on the groove (901), then cut the upper half of the square steel block symmetrically, leaving the middle part, the size of the middle part should be connected with the third slide groove (4), and the fourth slider (13) should be processed and polished during cutting. The second slider (6) is then machined out of the lower half of the square steel block, the end faces of the second slider (6), the fourth slider (13) and the fourth slide groove (12) are all polished into arc surfaces, and then the second groove (15) is opened at the bottom of the square steel block, the second rolling bearing (16) is rotatably connected in the second groove (15), the third threaded hole (19) and the fourth threaded hole (21) are machined out by a punching machine, and the third threaded rod (20) is connected in the third threaded hole (19), thereby completing the manufacture of the upper slide rail (2); S3: Slide rail connection: The upper slide rail (2) and the lower slide rail base (1) are slidably connected via the sliding block (8); after the second sliding block (802) slides into the first slide groove (3), the first threaded rod (703) and the second threaded rod (704) are rotated so that the first threaded rod (703) and the second threaded rod (704) close the opening of the first slide groove (3), thereby completing the connection of the slide rail.

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