Classified conveying device for blind box toys
By using adjustable spacing partitions and suction cup components in the blind box toy conveying device, the problem of inaccurate proportion control in the conveying of blind box toys is solved, enabling precise delivery of hidden and regular models and expanding the scope of application.
Patent Information
- Application Number
- CN202520090584.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Existing blind box toy conveying devices cannot accurately control the ratio of hidden and regular items, resulting in too many or too few hidden items during the material conveying process, and their applicability is limited.
A blind box toy sorting and conveying device was designed, which includes an adjustable spacing partition structure and a suction cup assembly. The partition divides the conveyor belt into multiple blind box conveying areas, and the suction cup assembly is used to convey hidden and regular blind boxes to the same conveying structure in proportion.
It achieves precise control over the ratio of hidden and regular blind boxes, avoiding an excessive or insufficient number of hidden boxes, while also expanding the applicability of the device to blind boxes of different sizes.
Smart Images

Figure CN223751670U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a conveying device technical field, specifically a blind box toy classification conveying device. BACKGROUND
[0002] The blind box toy refers to the toy box that the consumer cannot know the specific product style in advance, has the random attribute, and the blind box attracts the attention of a large number of young consumers with its unique randomness and surprise. In recent years, the blind box toy has been widely popularized and popularized in the global range, and the market scale is expanding. The blind box toy needs to use the conveying device when transporting on the production line. The conveying device now generally transports the blind box toy from one station to another station through the belt, the roller or other transmission modes, realizes the automatic production.
[0003] The existing blind box toy is transported, and the material is often transported by a separate production line, the classification is not clear, the amount of hidden products is not convenient to control, and too many or too few hidden products can appear in the process of material transportation, so a blind box toy classification conveying device is needed to solve the above problems. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a blind box toy classification conveying device, and aims at solving the problems in the prior art.
[0005] In order to realize the above-mentioned purpose, the utility model one aspect's embodiment provides a blind box toy classification conveying device, including the frame, the frame is provided with the conveying belt along the frame length direction conveying, the movable mounting of a plurality of isolation plate structures is arranged on the conveying belt, the spacing between adjacent two isolation plates is adjustable, a plurality of blind boxes are arranged between the isolation plate structures, a plurality of evenly distributed conveying structures are arranged on the frame, the conveying direction of the conveying structure and the conveying direction of the conveying belt are perpendicular to each other, a plurality of adjustable spacing suction disc assemblies are arranged on the top of the frame, each suction disc assembly is arranged along the conveying direction of the conveying structure, the spacing between adjacent two suction disc assemblies is adjustable, and the suction disc assembly is aligned with the corresponding conveying structure up and down.
[0006] Preferably, the suction disc assembly includes a plurality of movable racks movable along the length direction of the frame and spacing adjustment structures adjusting the spacing between adjacent two movable racks, the length direction of the movable rack is parallel to the conveying direction of the conveying structure, a suction disc mounting rack structure movable in the vertical direction is arranged on the movable rack, the position of the suction disc mounting rack structure corresponds to the position of the conveying structure, a plurality of evenly distributed vacuum suction discs are arranged on the suction disc mounting rack structure, the number of the vacuum suction discs corresponds to the number of the blind boxes, and the position of the vacuum suction disc corresponds to the position of the blind box.
[0007] Preferably, the chuck mounting frame structure comprises a cylinder mounted on the moving frame and a mounting frame connected with the cylinder output end, the length direction of the mounting frame is parallel to the conveying direction of the conveying structure, and the plurality of vacuum chucks are uniformly mounted on the mounting frame.
[0008] Preferably, the spacing adjusting structure comprises a belt drive adjusting structure for driving the moving frame to move and a rotating plate rotatably connected with the plurality of moving frames, the plurality of rotating plates are rotatably connected with each other, and the belt drive adjusting structure is connected with one moving frame.
[0009] Preferably, the top side of the frame is provided with a belt drive conveying structure for transmission along the length direction of the frame, the belt drive conveying structure is provided with a moving guide rail frame, the length direction of the moving guide rail frame is parallel to the length direction of the frame, the moving frame can move linearly along the length direction of the moving guide rail frame, the moving guide rail frame and the moving frame are provided with a connecting structure, and the belt drive adjusting structure is mounted on the moving guide rail frame.
[0010] Preferably, the connecting structure comprises a connecting plate connected with the moving guide rail frame and a drag chain connected with the moving frame, and the end of the drag chain is connected with the connecting plate.
[0011] Preferably, both sides of the conveying structure are provided with blind box limiting structures, the blind box limiting structure comprises a mounting frame connected with the conveying structure and a limiting baffle provided on both sides of the conveying structure, a through hole is formed in the mounting frame, a clamping threaded rod is arranged in the through hole, a clamping nut is threadedly connected with the outer surface of the clamping threaded rod, a moving ring is fixedly connected to the end of the clamping threaded rod, an adjusting rod is arranged in the moving ring, a positioning threaded rod is connected to the end of the adjusting rod, two positioning nuts are threadedly connected with the outer surface of the positioning threaded rod, a connecting seat is connected in the limiting baffle, and one positioning nut is located in the connecting seat and is in sliding connection with the connecting seat.
[0012] Preferably, the spacer plate structure comprises an adjusting frame mounted on the conveying belt, the length direction of the adjusting frame is perpendicular to the conveying direction of the conveying belt, a plurality of adjusting blocks that can move along the length direction of the adjusting frame are arranged on the adjusting frame, a movable rod that can move up and down is arranged on each of the plurality of adjusting blocks, and a spacer plate is fixedly connected to the end of each of the plurality of movable rods.
[0013] Preferably, a first guide structure is arranged between the moving guide rail frame and the frame, the first guide structure comprises a first guide rail mounted on the frame and a first sliding seat connected with the moving guide rail frame, the length direction of the first guide rail is parallel to the length direction of the frame, and the first sliding seat is in sliding connection with the first guide rail.
[0014] Preferably, a second guide structure is provided between the movable frame and the movable guide rail frame. The second guide structure includes a second guide rail mounted on the movable guide rail frame and a second slide block connected to the movable frame. The length direction of the second guide rail is parallel to the length direction of the frame, and the second slide block is slidably connected to the second guide rail.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. The conveyor belt is divided into multiple blind box conveying areas by multiple partition plate structures. Hidden blind boxes are placed in one of the blind box conveying areas, while regular blind boxes are placed in the remaining blind box conveying areas. The suction cup assembly can transport multiple regular blind boxes and one hidden blind box to a conveying structure and continue to the next process. This ensures that the ratio of hidden blind boxes to regular blind boxes is the same in each conveying structure, thereby enabling precise control of the ratio of hidden blind boxes and avoiding situations where there are too many or too few hidden blind boxes.
[0017] 2. The partition structure can limit the width of blind boxes, the adjustable suction cup assembly can pick up blind boxes of a greater length, and the blind box limiting structure can limit the length of blind boxes. This allows the blind box toy sorting and conveying device to convey blind boxes of a greater variety of sizes, expanding its applicability and improving its practicality. Attached Figure Description
[0018] Figure 1 This is a first-view structural diagram of the present invention;
[0019] Figure 2 This is a schematic diagram of the second-view structure of the present invention;
[0020] Figure 3 This is a first-view structural schematic diagram of the suction cup assembly and its connecting components of the present invention;
[0021] Figure 4 This is a second-view structural schematic diagram of the suction cup assembly and its connecting components of the present invention;
[0022] Figure 5 This is a structural schematic diagram of the conveying structure and its connecting components of this utility model;
[0023] Figure 6 This is a structural schematic diagram of the mobile frame and its connecting components of this utility model;
[0024] Figure 7 This is a structural schematic diagram of the conveyor belt and its connecting components of this utility model;
[0025] Figure 8The utility model discloses a position limiting baffle and connecting component's explosion structure schematic view.
[0026] In the drawing: 10 - frame, 11 - belt drive conveying structure, 12 - moving guide rail frame, 13 - connecting plate, 14 - first guide rail, 15 - first sliding base, 16 - second guide rail, 20 - conveying belt, 30 - isolation plate structure, 31 - adjusting frame, 32 - adjusting block, 33 - movable rod, 34 - isolation plate, 40 - conveying structure, 41 - mounting frame, 42 - position limiting baffle, 43 - clamping threaded rod, 44 - clamping screw, 45 - moving ring, 46 - adjusting rod, 47 - positioning threaded rod, 48 - positioning nut, 49 - connecting seat, 50 - suction cup assembly, 51 - moving frame, 52 - drag chain, 53 - suction cup mounting frame structure, 531 - air cylinder, 532 - mounting frame, 54 - vacuum suction cup, 55 - belt drive adjusting structure, 56 - rotating plate, 57 - second sliding base. DETAILED DESCRIPTION
[0027] The utility model will be further described below in combination with the drawings.
[0028] As Figures 1 to 8 The utility model discloses a blind box toy classification conveying device, it includes frame 10, and the four corners of frame 10 bottom side are provided with the adjusting foot and the moving wheel, thereby facilitating frame 10 moves, and frame 10 is provided with conveying belt 20 along the length direction conveying of frame 10, and conveying belt 20 is located in the middle position of frame 10 in vertical direction, and a plurality of isolation plate structures 30 are movably installed on conveying belt 20, and a plurality of isolation plate structures 30 evenly distribute on conveying belt 20, and the spacing between adjacent two isolation plates is adjustable, and blind box is arranged between a plurality of isolation plate structures 30, and the end position of conveying belt 20 is provided with baffle, and blind box can be avoided with conveying belt 20 through baffle and separates, and frame 10 is provided with a plurality of evenly distributed conveying structures 40, and the conveying direction of conveying structure 40 is perpendicular to the conveying direction of conveying belt 20, and the top of frame 10 is provided with a plurality of adjustable spacing suction cup assemblies 50, and each suction cup assembly 50 is along the conveying direction of conveying structure 40, and the spacing between adjacent two suction cup assemblies 50 is equal ratio adjustable, and is used for controlling suction cup assembly and the corresponding conveying structure and aligning.
[0029] The suction cup assembly 50 comprises a plurality of moving frames 51 which can move along the length direction of the rack 10 and a spacing adjustment structure which adjusts the spacing between two adjacent moving frames 51. The length direction of the moving frame 51 is parallel to the conveying direction of the conveying structure 40. The moving frame 51 is provided with a suction cup mounting frame structure 53 which can move in the vertical direction. The suction cup mounting frame structure 53 corresponds to the position of the conveying structure 40. The suction cup mounting frame structure 53 is provided with a plurality of uniformly distributed vacuum suction cups 54. The number of vacuum suction cups 54 corresponds to the number of blind boxes. The position of the vacuum suction cup 54 corresponds to the position of the blind box. The suction cup mounting frame structure 53 comprises a pneumatic cylinder 531 mounted on the moving frame 51 and a mounting frame 532 connected to the output end of the pneumatic cylinder 531. The length direction of the mounting frame 532 is parallel to the conveying direction of the conveying structure 40. A plurality of vacuum suction cups 54 are uniformly mounted on the mounting frame 532. The spacing adjustment structure comprises a belt drive adjustment structure 55 which drives the moving frame 51 to move and a rotating plate 56 which is rotatably connected to a plurality of moving frames 51. The rotating plates 56 are rotatably connected between each other. The belt drive adjustment structure 55 is connected to one moving frame 51. The belt drive adjustment structure 55 is located above the moving frame 51. The belt drive adjustment structure 55 is located below the belt drive conveying structure 11. The belt drive adjustment structure 55 does not interfere with the belt drive conveying structure 11. By driving the belt drive adjustment structure 55 to work, the rotation of the belt on the belt drive adjustment structure 55 can drive one moving frame 51 to move. At this time, the rotating plate 56 can drive a plurality of moving frames 51 to move simultaneously. The spacing between two adjacent moving frames 51 can be adjusted according to the length of the blind box.
[0030] The top side of the rack 10 is provided with a belt drive conveying structure 11 which can move along the length direction of the rack 10. The belt drive conveying structure 11 is provided with a moving guide rail frame 12. The length direction of the moving guide rail frame 12 is parallel to the length direction of the rack 10. The moving frame 51 can move linearly along the length direction of the moving guide rail frame 12. A connecting structure is arranged between the moving guide rail frame 12 and the moving frame 51. The belt drive adjustment structure 55 is mounted on the moving guide rail frame 12. The belt drive adjustment structure 55 can move with the moving guide rail frame 12. The belt drive conveying structure 11 can drive the moving guide rail frame 12 to move.
[0031] The connecting structure comprises a connecting plate 13 connected with the mobile guide rail frame 12 and a drag chain 52 connected with the mobile frame 51, the end of the drag chain 52 is connected with the connecting plate 13, the number of the drag chain 52 is multiple, the drag chain 52 and the connecting plate 13 can keep the adjacent two mobile frames 51 at the appropriate interval after adjusting the interval between the adjacent two mobile frames 51 to the appropriate interval, when the mobile frame 51 moves, the drag chain 52 moves and rotates a part, after adjusting the interval between the adjacent two mobile frames 51 to the appropriate interval, the position of the drag chain 52 remains unchanged.
[0032] The two sides of the conveying structure 40 are provided with blind box limiting structures, the blind box limiting structure comprises a mounting frame 41 connected with the conveying structure 40 and a limiting baffle 42 arranged on the two sides of the conveying structure 40, the number of the limiting baffles 42 arranged on the two sides of the conveying structure 40 is at least two, the mounting frame 41 is provided with a through hole, the inside of the through hole is provided with a clamping threaded rod 43, the outer surface of the clamping threaded rod 43 is threadedly connected with a clamping sleeve 44, the end of the clamping threaded rod 43 is fixedly connected with a moving ring 45, the inside of the moving ring 45 is provided with an adjusting rod 46, the end of the adjusting rod 46 is connected with a positioning threaded rod 47, the outer surface of the positioning threaded rod 47 is threadedly connected with two positioning nuts 48, the inside of the limiting baffle 42 is connected with a connecting seat 49, one of the positioning nuts 48 is located in the inside of the connecting seat 49 and is in sliding connection with the connecting seat 49, before conveying the blind box, first make the adjusting rod 46 drive the positioning threaded rod 47 and the positioning nut 48 to move, at this time the connecting seat 49 drives the limiting baffle 42 to move, adjust the limiting baffle 42 to the appropriate interval between the side of the conveying structure 40 according to the length of the blind box, then rotate one of the positioning nuts 48 to make it closely adhere to the connecting seat 49, clamp and fix the connecting seat 49 through the two positioning nuts 48, then rotate the clamping sleeve 44 to make it threadedly connect with the clamping threaded rod 43 and make the clamping sleeve 44 closely adhere to the mounting frame 41, at this time the adjusting rod 46 closely adheres to the mounting frame 41, fix the adjusting rod 46, at this time the limiting baffle 42 is fixed at the appropriate position.
[0033] The isolation plate structure 30 comprises an adjusting frame 31 mounted on the conveying belt 20, the length direction of the adjusting frame 31 is perpendicular to the conveying direction of the conveying belt 20, the adjusting frame 31 is provided with multiple adjusting blocks 32 which can move along the length direction of the adjusting frame 31, multiple adjusting blocks 32 are provided with movable rods 33 which can move up and down, the ends of multiple movable rods 33 are fixedly connected with isolation plates 34, the upper part of the conveying belt 20 is divided into multiple blind box conveying spaces through the isolation plates 34, multiple blind boxes move between multiple blind box conveying spaces when the conveying belt 20 works, the adjusting blocks 32 are mounted on the adjusting frame 31 at different positions, which can adjust the interval between adjacent two isolation plates 34 to the appropriate interval according to the width of the blind box.
[0034] A first guide structure is arranged between the mobile guide rail frame 12 and the rack 10, and the first guide structure comprises a first guide rail 14 mounted on the rack 10 and a first sliding seat 15 connected with the mobile guide rail frame 12, the length direction of the first guide rail 14 is parallel to the length direction of the rack 10, the first sliding seat 15 is in sliding connection with the first guide rail 14, and the mobile guide rail frame 12 is moved along the direction of the first guide rail 14 through the first sliding seat 15 and the first guide rail 14.
[0035] A second guide structure is arranged between the mobile frame 51 and the mobile guide rail frame 12, and the second guide structure comprises a second guide rail 16 mounted on the mobile guide rail frame 12 and a second sliding seat 57 connected with the mobile frame 51, the length direction of the second guide rail 16 is parallel to the length direction of the rack 10, the second sliding seat 57 is in sliding connection with the second guide rail 16, and the mobile frame 51 is moved along the direction of the second guide rail 16 through the second sliding seat 57 and the second guide rail 16.
[0036] The working principle is as follows:
[0037] 1) A plurality of conventional blind boxes and a hidden blind box are respectively placed between a plurality of isolation plate structures 30, and the plurality of conventional blind boxes and the hidden blind box are conveyed to a suitable position through the conveying of the conveying belt 20;
[0038] 2) The mobile guide rail frame 12 is driven to move by the belt drive conveying structure 11, at this time, the mobile frame 51 drives the suction cup mounting frame structure 53 and the vacuum suction cup 54 to move, so that the vacuum suction cup 54 moves to a position corresponding to the blind box;
[0039] 3) The vacuum suction cup 54 is driven downward by the air cylinder 531 and adsorbed to the blind box, and after the blind box is adsorbed, the air cylinder 531 drives the vacuum suction cup 54 to reset and separate from the conveying belt 20;
[0040] 4) The mobile guide rail frame 12 is driven to move by the belt drive conveying structure 11, at this time, the mobile frame 51 drives the suction cup mounting frame structure 53 and the vacuum suction cup 54 to move, so that the vacuum suction cup 54 drives the blind box to move to a position corresponding to the conveying structure 40;
[0041] 5) The vacuum suction cup 54 is driven downward by the air cylinder 531 and placed on the conveying structure 40, at this time, a plurality of vacuum suction cups 54 connected with an installation rack 532 place a plurality of conventional blind boxes and a hidden blind box on the same conveying structure 40, and the plurality of conventional blind boxes and the hidden blind box are conveyed to the next station through the conveying structure 40.
[0042] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.
[0043] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment according to the present specification needs to exhibit each and every characteristic specified in the present specification. The specification can also be described in terms of a single preferred embodiment, it being understood that this single preferred embodiment can exhibit not every aspect or feature of the present specification. The specification can also be described in terms of a generic statement that the disclosure can include one, some, or all of a list of features. It is further understood that the specification is to be considered as a whole and not with reference to a single feature or design element alone.
Claims
1. A blind-box toy sorting conveyor apparatus, characterized by: The utility model relates to a kind of machine tool, including rack (10), the rack (10) is provided with conveying belt (20) conveying along the length direction of rack (10), the conveying belt (20) is movably mounted with multiple isolation plate structures (30), the spacing between adjacent two isolation plates is adjustable, multiple the spacing between isolation plate structures (30) is provided with blind box, the rack (10) is provided with multiple evenly distributed conveying structure (40), the conveying direction of the conveying structure (40) is perpendicular to the conveying direction of conveying belt (20), the top of the rack (10) is provided with multiple adjustable spacing suction disc assembly (50), each the suction disc assembly (50) is along the conveying direction of conveying structure (40) is arranged, the spacing between adjacent two suction disc assembly (50) can be adjusted in proportion, for controlling suction disc assembly and the upper and lower alignment of corresponding conveying structure.
2. A blind-box toy sorting conveyor device according to claim 1, characterized in that: The suction disc assembly (50) includes multiple movable racks (51) that can move along the length direction of the rack (10) and spacing adjustment structure that adjusts the spacing between adjacent two movable racks (51), the length direction of the movable rack (51) is parallel to the conveying direction of the conveying structure (40), the movable rack (51) is provided with a suction disc mounting rack structure (53) that can move in the vertical direction, the suction disc mounting rack structure (53) corresponds to the position of the conveying structure (40), the suction disc mounting rack structure (53) is provided with multiple evenly distributed vacuum suction cups (54), the number of the vacuum suction cups (54) corresponds to the blind box, and the vacuum suction cups (54) correspond to the position of the blind box.
3. A blind-box toy sorting conveyor according to claim 2, characterized in that: The suction disc mounting rack structure (53) includes a gas cylinder (531) mounted on the movable rack (51) and a mounting rack (532) connected to the output end of the gas cylinder (531), the length direction of the mounting rack (532) is parallel to the conveying direction of the conveying structure (40), and multiple the vacuum suction cups (54) are evenly mounted on the mounting rack (532).
4. A blind-box toy sorting conveyor device according to claim 2, characterized in that: The spacing adjustment structure includes a belt drive adjustment structure (55) for driving the movable rack (51) to move and a rotating plate (56) rotatably connected to multiple movable racks (51), multiple the rotating plates (56) are rotatably connected, and the belt drive adjustment structure (55) is connected to one movable rack (51).
5. A blind-box toy sorting and conveying device according to claim 4, characterized in that: The top side of the rack (10) is provided with a belt drive conveying structure (11) that drives along the length direction of the rack (10), the belt drive conveying structure (11) is provided with a movable guide rail rack (12), the length direction of the movable guide rail rack (12) is parallel to the length direction of the rack (10), the movable rack (51) can move linearly along the length direction of the movable guide rail rack (12), and the movable guide rail rack (12) and the movable rack (51) are provided with a connecting structure, and the belt drive adjustment structure (55) is mounted on the movable guide rail rack (12).
6. A blind-box toy sorting and conveying device according to claim 5, characterized in that: The connecting structure includes a connecting plate (13) connected to the movable guide rail rack (12) and a drag chain (52) connected to the movable rack (51), and the end of the drag chain (52) is connected to the connecting plate (13).
7. A blind-box toy sorting and conveying device according to claim 5, characterized in that: Both sides of the conveying structure (40) are provided with blind box limiting structure, the blind box limiting structure includes the mounting frame (41) connected with the conveying structure (40) and the limiting baffle (42) provided on both sides of the conveying structure (40), the mounting frame (41) is provided with a through hole, the through hole is provided with a clamping threaded rod (43) in the inside, the outer surface of the clamping threaded rod (43) is threadedly connected with a clamping screw (44), the end of the clamping threaded rod (43) is fixedly connected with a moving ring (45), the inside of the moving ring (45) is provided with an adjusting rod (46), the end of the adjusting rod (46) is connected with a positioning threaded rod (47), the outer surface of the positioning threaded rod (47) is threadedly connected with two positioning nuts (48), the inside of the limiting baffle (42) is connected with a connecting seat (49), one of the positioning nuts (48) is located in the inside of the connecting seat (49) and is slidably connected with the connecting seat (49).
8. A blind-box toy sorting and conveying device according to claim 7, characterized in that: The isolation plate structure (30) includes an adjusting frame (31) mounted on the conveying belt (20), the length direction of the adjusting frame (31) is perpendicular to the conveying direction of the conveying belt (20), a plurality of adjusting blocks (32) capable of moving along the length direction of the adjusting frame (31) are arranged on the adjusting frame (31), a plurality of movable rods (33) capable of moving up and down are arranged on the plurality of adjusting blocks (32), and the ends of the plurality of movable rods (33) are fixedly connected with isolation plates (34).
9. A blind-box toy sorting and conveying device according to claim 7, characterized in that: The first guide structure is arranged between the moving guide rail frame (12) and the rack (10), the first guide structure includes a first guide rail (14) mounted on the rack (10) and a first sliding seat (15) connected with the moving guide rail frame (12), the length direction of the first guide rail (14) is parallel to the length direction of the rack (10), and the first sliding seat (15) is slidably connected with the first guide rail (14).
10. A blind-box toy sorting and conveying device according to claim 9, characterized in that: The second guide structure is arranged between the moving frame (51) and the moving guide rail frame (12), the second guide structure includes a second guide rail (16) mounted on the moving guide rail frame (12) and a second sliding seat (57) connected with the moving frame (51), the length direction of the second guide rail (16) is parallel to the length direction of the rack (10), and the second sliding seat (57) is slidably connected with the second guide rail (16).