An automatic paper feeding, positioning and cutting device

Abstract

The utility model relates to automatic paper feeding and cutting device technical field, especially an automatic paper feeding and positioning cutting device, including frame, install the fiducial flat plate on the frame, install automatic paper feeding assembly on the fiducial flat plate, side alignment subassembly, side alignment subassembly is installed on the frame, and side alignment subassembly execution end is located on the fiducial flat plate upside and is used for the paper side alignment, hold down subassembly, hold down subassembly is installed on the frame and is used for the paper to be cut tightly, cutting subassembly, cutting subassembly is installed on the frame and is located the hold down subassembly side wall for cutting paper. The utility model is beneficial to automatic positioning paper, improves paper cutting efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic paper feeding and cutting devices, and in particular to an automatic paper feeding, positioning and cutting device. Background Technology

[0002] In today's printing production process, printed paper needs to undergo a meticulous cutting process to achieve the appropriate size required for subsequent binding. Only when the cut paper is accurate and uniform in size can we ensure that the final printed materials such as books, magazines, and brochures maintain a good appearance and quality during binding.

[0003] However, the current paper cutting process is cumbersome, impacting overall production efficiency. Specifically, before cutting each side of the paper, operators need to repeatedly align it. This not only increases workload but can also introduce errors during cutting, affecting accuracy. Furthermore, the need to re-align after each side cut significantly increases production time. In practice, this means that a cutting task that could be completed quickly is prolonged due to frequent alignment, reducing overall production efficiency. This approach not only impacts efficiency but also wastes human resources, as operators spend more time and effort on alignment. Frequent alignment also increases the number of times the paper moves during cutting, increasing the risk of damage such as creases and edge abrasion, which can affect the quality of the final product.

[0004] Therefore, those skilled in the art are dedicated to developing an automatic paper feeding, positioning, and cutting device that automatically positions the paper and improves paper cutting efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a paper feeding and positioning cutting device that automatically positions the paper and improves the paper cutting efficiency.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An automatic paper feeding, positioning, and cutting device includes... A frame on which a reference plate is mounted, and an automatic paper pushing assembly is mounted on the reference plate; A side alignment assembly, which is mounted on the frame and whose actuating end is located on the upper side of the reference plate and is used to align the sides of the paper; A clamping assembly, which is mounted on the frame and used to clamp the paper to be cut; A cutting assembly, mounted on the frame and located on the side wall of the clamping assembly, is used to cut paper.

[0007] The beneficial effects of adopting the above solution are as follows: by using the frame, reference plate, automatic paper feeding assembly, side alignment assembly, clamping assembly and cutting assembly, an integrated process of automated paper feeding, positioning and cutting is realized, avoiding the problems of low efficiency and easy error caused by traditional manual paper alignment, greatly improving paper cutting efficiency, helping to improve the efficiency of the entire printing production process, reducing human resource waste, and reducing the risk of paper damage due to frequent movement, thereby ensuring the appearance and quality of the final printed products.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the automatic paper pushing assembly includes a paper pushing baffle and a paper pushing drive motor. The paper pushing baffle is disposed on the reference plate, and sliding blocks are connected to both ends of the paper pushing baffle. A first guide assembly is installed between the sliding blocks and the reference plate. The paper pusher drive motor is mounted on the frame and located below the reference plate. The output end of the paper pusher drive motor is connected to a paper pusher screw. A paper pusher screw bearing that cooperates with the paper pusher screw is provided outside the paper pusher screw. The paper pusher screw bearing is mounted on a connecting plate. Both ends of the connecting plate are respectively connected to the sliding blocks on both sides. The rotation of the paper pusher drive motor drives the paper pusher baffle to move on the reference plate.

[0010] The beneficial effects of adopting the above-mentioned further solution are: the automatic paper pushing assembly adopts a paper pushing baffle, a paper pushing drive motor, a sliding block, a first guide assembly, and a paper pushing screw, a paper pushing screw bearing and a connecting plate, which can accurately push the paper to move on the reference plate and realize the automatic paper pushing and alignment. The rotation of the paper pusher motor drives the paper pusher baffle to move, which makes the paper pushing process more stable and controllable, effectively ensuring the positioning accuracy of the paper before cutting, providing a good foundation for subsequent cutting processes, and further improving the cutting quality.

[0011] Furthermore, the first guide assembly includes a stop plate mounted on both sides of the reference plate, the sliding block engaging on the stop plate, a first slider mounted on the sliding block, and a first guide rail cooperating with the first slider mounted on the reference plate.

[0012] The beneficial effects of adopting the above-mentioned further solution are: the first guide assembly consists of a material stop plate, a first slider and a first guide rail, which can provide a stable guiding effect for the sliding block, ensuring that the paper pusher baffle always maintains a straight line movement during the movement, and avoiding deviation or shaking.

[0013] Furthermore, the side alignment assembly includes a connecting frame, which is mounted on the frame. The connecting frame is connected to a mounting plate via a lifting assembly. A first side moving assembly and a second side moving assembly are mounted on the lower side of the mounting plate, and the first side moving assembly and the second side moving assembly move relative to each other.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the side alignment component, through the cooperation of the connecting frame, the lifting component, the mounting plate, and the first side moving component and the second side moving component, can perform alignment operations on both sides of the paper.

[0015] Furthermore, the lifting assembly includes lifting electric cylinders, the output ends of the two lifting electric cylinders are connected to a balance block, the lower side of the balance block is connected to a lifting column, and the lifting column passes through the connecting frame and is connected to the mounting plate; The mounting plate is also connected to a guide post, and the connecting frame is equipped with a guide seat that cooperates with the guide post.

[0016] The beneficial effects of adopting the above-mentioned further solution are: the output end of the lifting cylinder is connected to the balance block and the lifting column, which can accurately control the lifting height of the mounting plate, ensuring that the first side moving component and the second side moving component can accurately act on the side of the paper, while avoiding the automatic paper pushing component from moving.

[0017] Furthermore, the first side moving component includes a first side motor, the first side motor is mounted on the side wall of the mounting plate and the output end of the first side motor is connected to a first side lead screw, the first side lead screw is sleeved with a first side lead screw bearing, and a first side push plate is mounted on the lower side of the first side lead screw bearing. The first side lead screw bearing is connected to the first side slide rail via the first guide member, and the first side slide rail is installed on the lower side of the mounting plate.

[0018] The beneficial effects of adopting the above-mentioned further solution are: the first side motor drives the first side lead screw to rotate, which in turn drives the first side lead screw bearing and the first side push plate to move along the first lateral slide rail. The transmission accuracy is high, and the position of the push plate can be accurately controlled, thereby better aligning one side of the paper, improving the accuracy of side alignment, and providing a strong guarantee for cutting high-quality paper.

[0019] Furthermore, the second side moving component includes a second side motor, which is mounted on the side wall of the mounting plate and the output end of the second side motor is connected to a second side lead screw. A second side lead screw bearing is sleeved on the second side lead screw, and a second side push plate is mounted on the lower side of the second side lead screw bearing. The first side push plate and the second side push plate are arranged opposite to each other. The second side lead screw bearing is connected to the second side slide rail via the second guide member, and the second side slide rail is installed on the lower side of the mounting plate.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the second side moving component corresponds to the first side moving component, which facilitates the relative movement of the second side push plate and the first side push plate to jointly complete the alignment of the two sides of the paper.

[0021] Furthermore, a third guide member is connected to the upper end of the first side push plate and the second side push plate, and a transverse guide rod is inserted inside the third guide member. The transverse guide rod is installed on the lower side of the mounting plate.

[0022] The beneficial effects of adopting the above-mentioned further solution are: it facilitates the upper part of the push plate to provide auxiliary guidance during the lateral movement, making its movement more stable and smooth, and preventing the push plate from shaking or jamming when aligning the paper. Furthermore, the clamping assembly includes a clamping block, both ends of which are mounted on the frame via sliding components, and a hydraulic component is also connected to the lower side of the clamping block.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the clamping assembly adopts a structure in which the two ends of the clamping block are mounted on the frame through sliding components and the lower side of the clamping block is connected to the hydraulic component. The clamping force can be provided by the hydraulic component to stably press the paper to be cut onto the reference plate.

[0024] Furthermore, the cutting assembly includes a cutting blade, which is connected to a power assembly via a hinge assembly, and the cutting blade is provided with a guide groove, and a fixing block that mates with the guide groove is mounted on the frame.

[0025] The beneficial effects of adopting the above-mentioned further solution are: the power component drives the cutting blade to perform cutting action through the hinge component, and the guide groove on the cutting blade cooperates with the fixed block to ensure that the cutting blade maintains a stable movement trajectory during the cutting process, so that the cutting edge is neat and smooth, the cutting size is accurate, and the quality and efficiency of paper cutting are effectively improved, meeting the high requirements for paper size accuracy in printing production. Attached Figure Description

[0026] Figure 1 This is a front view structural diagram of an automatic paper feeding, positioning, and cutting device according to a specific embodiment of the present invention; Figure 2 This is a rear view structural diagram of an automatic paper feeding, positioning, and cutting device according to a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the side alignment component structure according to a specific embodiment of the present invention. Figure 1 ; Figure 4This is a schematic diagram of the side alignment component structure according to a specific embodiment of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the pressing component and the cutting component in a specific embodiment of the present invention.

[0027] The attached diagram lists the components represented by each number as follows: 1. Frame; 2. Reference plate; 3. Automatic paper pushing assembly; 4. Side alignment assembly; 5. Clamping assembly; 6. Cutting assembly; 7. Paper pushing baffle; 8. Paper pushing drive motor; 9. Paper pushing screw; 10. Sliding block; 11. Connecting plate; 12. Material blocking plate; 13. First slider; 14. First guide rail; 15. Connecting frame; 16. Mounting plate; 17. Lifting cylinder; 18. Balance block; 19. Lifting column; 20. Guide column; 21. Guide seat; 22. First side motor; 23. First side lead screw; 24. First side lead screw bearing; 25. First side push plate; 26. First lateral slide rail; 27. Second side motor; 28. Second side lead screw; 29. ​​Second side lead screw bearing; 30. Second side push plate; 31. Second lateral slide rail; 32. Transverse guide rod; 33. Clamping block; 34. Sliding assembly; 35. Hinge assembly; 36. Power assembly; 37. Guide groove; 38. Fixing block; 39. Third guide component; 40. Cutting blade. Detailed Implementation

[0028] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0029] In the description of this invention, it should be understood that the terms "center," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "inner," "outer," "circumferential," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, an automatic paper feeding, positioning and cutting device includes a frame 1, a reference plate 2 mounted on the frame 1, and an automatic paper pushing component 3 mounted on the reference plate 2. Side alignment component 4 is mounted on frame 1, and the execution end of side alignment component 4 is located on the upper side of reference plate 2 and is used to align the sides of the paper. The clamping assembly 5 is mounted on the frame 1 and is used to clamp the paper to be cut. Cutting component 6 is mounted on frame 1 and located on the side wall of clamping component 5 for cutting paper.

[0033] like Figure 1 , Figure 2 As shown, in some embodiments, the automatic paper pushing assembly 3 includes a paper pushing baffle 7 and a paper pushing drive motor 8. The paper pushing drive motor 8 is a servo motor and is electrically connected to a control assembly (not shown in the figure). The paper pushing baffle 7 is disposed on the reference plate 2. Sliding blocks 10 are connected to both ends of the paper pushing baffle 7. A first guide assembly is installed between the sliding blocks 10 and the reference plate 2. The paper pushing drive motor 8 is mounted on the frame 1 and located below the reference plate 2. A paper pushing screw 9 is connected to the output end of the paper pushing drive motor 8. A paper pushing screw bearing that cooperates with the paper pushing screw 9 is disposed outside the paper pushing screw 9. The paper pushing screw bearing is mounted on a connecting plate 11. Both ends of the connecting plate 11 are connected to the sliding blocks 10 on both sides respectively. The rotation of the paper pushing drive motor 8 drives the paper pushing baffle 7 to move on the reference plate 2. Specifically, when the paper pusher drive motor 8 rotates, the paper pusher screw 9, in cooperation with the paper pusher screw bearing, drives the connecting plate 11 to move along the first guide assembly, thereby driving the paper pusher baffle 7 to move smoothly on the reference plate 2, thus realizing the automatic paper push.

[0034] In this embodiment, the first guiding component includes a material blocking plate 12 installed on both sides of the reference plate 2, a sliding block 10 engaged on the material blocking plate 12, a first slider 13 installed on the sliding block 10, and a first guide rail 14 cooperating with the first slider 13 installed on the reference plate 2. The cooperation between the first slider 13 and the first guide rail 14 provides stable guidance for the movement of the paper pusher baffle 7, ensuring its linear movement and avoiding deviation or shaking.

[0035] like Figure 1 , Figure 3 and Figure 4 As shown, in one embodiment, the side alignment component 4 includes a connecting frame 15, which is mounted on the frame 1. The connecting frame 15 is connected to a mounting plate 16 via a lifting component. A first side moving component and a second side moving component are mounted on the lower side of the mounting plate 16. The first side moving component and the second side moving component move relative to each other. The first side moving component and the second side moving component can move independently or move relative to each other simultaneously to achieve alignment of the two sides of the paper.

[0036] The lifting assembly includes lifting cylinders 17, which are electrically connected to the control assembly. Two balance blocks 18 are connected to the output ends of the two lifting cylinders 17. A lifting column 19 is connected to the lower side of each balance block 18, passing through the connecting frame 15 and connecting to the mounting plate 16. The extension and retraction of the lifting cylinders 17 precisely controls the lifting height of the mounting plate 16, thereby adjusting the height of the first and second side-moving components to ensure accurate application to the paper side. After side alignment, the lifting cylinders 17 raise the first and second side-moving components to their highest points, avoiding obstruction of the automatic paper-pushing assembly 3.

[0037] The mounting plate 16 is also connected to a guide post 20, which can be an optical axis. The connecting bracket 15 is equipped with a guide seat 21 that mates with the guide post 20.

[0038] In this embodiment, the first side moving component includes a first side motor 22, which is a servo motor and electrically connected to the control component. The first side motor 22 is mounted on the side wall of the mounting plate 16, and the output end of the first side motor 22 is connected to a first side lead screw 23. The first side lead screw 23 is mounted on the frame 1 through a lead screw mounting seat. A first side lead screw bearing 24 is sleeved on the first side lead screw 23. A first side push plate 25 is mounted on the lower side of the first side lead screw bearing 24. The first side lead screw bearing 24 is connected to a first lateral slide rail 26 through a first guide member. The first lateral slide rail 26 is mounted on the lower side of the mounting plate 16. When the first side motor 22 is energized and rotates, it drives the first side lead screw 23 to rotate, thereby causing the first side lead screw bearing 24 to move along the first lateral slide rail 26, thereby driving the first side push plate 25 to move, realizing the alignment operation of one side of the paper.

[0039] Similarly, the second side moving assembly includes a second side motor 27, which is mounted on the side wall of the mounting plate 16 and connected to a second side lead screw 28 at its output end. A second side lead screw bearing 29 is sleeved on the second side lead screw bearing 28, and a second side push plate 30 is mounted on the lower side of the second side lead screw bearing 29. The first side push plate 25 and the second side push plate 30 are arranged opposite to each other. The second side lead screw bearing 29 is connected to a second lateral slide rail 31 through a second guide member. The second lateral slide rail 31 is mounted on the lower side of the mounting plate 16. When the second side motor 27 is energized and rotates, it drives the second side lead screw 28 to rotate, causing the second side lead screw bearing 29 to move along the second lateral slide rail 31, thereby driving the second side push plate 30 to move relative to the first side push plate 25, and together completing the alignment work of the two sides or opposite sides of the paper.

[0040] The upper ends of the first side push plate 25 and the second side push plate 30 are also connected to a third guide member 39. A transverse guide rod 32 is inserted inside the third guide member 39. The transverse guide rod 32 is installed on the lower side of the mounting plate 16. The cooperation between the third guide member 39 and the transverse guide rod 32 provides auxiliary guidance for the upper part of the push plate during the transverse movement, making its movement more stable and smooth, preventing the push plate from shaking or jamming when aligning the paper, and ensuring the precise transverse movement of the first side push plate 25 and the second side push plate 30.

[0041] like Figure 1 , Figure 2 and Figure 5As shown, the clamping assembly 5 includes a clamping block 33, which is mounted on the frame 1 at both ends via sliding assemblies 34. A hydraulic assembly is also connected to the lower side of the clamping block 33. The hydraulic assembly provides clamping force to the clamping block 33 through the transmission of hydraulic oil, enabling it to stably press the paper onto the reference plate 2, preventing paper displacement or vibration during the cutting process, thus ensuring cutting accuracy and quality. The sliding assembly 34 can employ a slider and a slide rail combination, allowing the clamping block 33 to be adjusted in position on the frame 1 to accommodate cutting requirements for different paper sizes.

[0042] The cutting assembly 6 includes a cutting blade 40, which is connected to a power assembly 36 via a hinge assembly 35. The cutting blade 40 is provided with a guide groove 37, and a fixing block 38 that mates with the guide groove 37 is installed on the frame 1. The power assembly 36 provides the power required for cutting the cutting blade 40. In this embodiment, a worm gear pair is used. When the power assembly 36 is working, it drives the cutting blade 40 to move through the hinge assembly 35. The guide groove 37 on the cutting blade 40 mates with the fixing block 38, which ensures that the cutting blade 40 maintains a stable movement trajectory during the cutting process, resulting in neat and smooth cutting edges and accurate cutting dimensions. This effectively improves the quality and efficiency of paper cutting and meets the high requirements for paper size accuracy in printing production.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic paper feeding, positioning, and cutting device, characterized in that: include A frame (1) is provided, on which a reference plate (2) is mounted, and on which an automatic paper pusher assembly (3) is mounted. Side alignment component (4), the side alignment component (4) is mounted on the frame (1), and the execution end of the side alignment component (4) is located on the upper side of the reference plate (2) and is used to align the sides of the paper; A clamping assembly (5) is mounted on the frame (1) and used to clamp the paper to be cut. A cutting assembly (6) is mounted on the frame (1) and located on the side wall of the clamping assembly (5) for cutting paper.

2. The automatic paper feeding, positioning, and cutting device according to claim 1, characterized in that: The automatic paper pushing assembly (3) includes a paper pushing baffle (7) and a paper pushing drive motor (8). The paper pushing baffle (7) is disposed on the reference plate (2). Sliding blocks (10) are connected to both ends of the paper pushing baffle (7). A first guide assembly is installed between the sliding block (10) and the reference plate (2). The paper pusher motor (8) is mounted on the frame (1) and located on the lower side of the reference plate (2). The output end of the paper pusher motor (8) is connected to the paper pusher screw (9). The paper pusher screw (9) is provided with a paper pusher screw bearing that cooperates with the paper pusher screw (9). The paper pusher screw bearing is mounted on the connecting plate (11). The two ends of the connecting plate (11) are respectively connected to the sliding blocks (10) on both sides. The paper pusher motor (8) rotates and drives the paper pusher baffle (7) to move on the reference plate (2).

3. The automatic paper feeding, positioning, and cutting device according to claim 2, characterized in that: The first guide assembly includes a baffle plate (12) installed on both sides of the reference plate (2), a sliding block (10) engaging on the baffle plate (12), a first slider (13) installed on the sliding block (10), and a first guide rail (14) cooperating with the first slider (13) installed on the reference plate (2).

4. The automatic paper feeding, positioning, and cutting device according to claim 1, characterized in that: The side alignment component (4) includes a connecting frame (15), which is mounted on the frame (1). The connecting frame (15) is connected to a mounting plate (16) via a lifting component. A first side moving component and a second side moving component are mounted on the lower side of the mounting plate (16). The first side moving component and the second side moving component move relative to each other.

5. The automatic paper feeding, positioning, and cutting device according to claim 4, characterized in that: The lifting assembly includes lifting electric cylinders (17), the output ends of the two lifting electric cylinders (17) are connected to a balance block (18), the lower side of the balance block (18) is connected to a lifting column (19), and the lifting column (19) passes through the connecting frame (15) and is connected to the mounting plate (16). The mounting plate (16) is also connected to a guide post (20), and the connecting frame (15) is equipped with a guide seat (21) that cooperates with the guide post (20).

6. The automatic paper feeding, positioning, and cutting device according to claim 4, characterized in that: The first side moving component includes a first side motor (22), which is mounted on the side wall of the mounting plate (16) and the output end of the first side motor (22) is connected to a first side lead screw (23). The first side lead screw (23) is sleeved with a first side lead screw bearing (24), and a first side push plate (25) is mounted on the lower side of the first side lead screw bearing (24). The first side lead screw bearing (24) is connected to the first side slide rail (26) through the first guide member, and the first side slide rail (26) is installed on the lower side of the mounting plate (16).

7. The automatic paper feeding, positioning, and cutting device according to claim 6, characterized in that: The second side moving assembly includes a second side motor (27), which is mounted on the side wall of the mounting plate (16) and the output end of the second side motor (27) is connected to a second side lead screw (28). The second side lead screw (28) is sleeved with a second side lead screw bearing (29), and a second side push plate (30) is mounted on the lower side of the second side lead screw bearing (29). The first side push plate (25) and the second side push plate (30) are arranged opposite to each other. The second side lead screw bearing (29) is connected to the second side slide rail (31) via the second guide member, and the second side slide rail (31) is installed on the lower side of the mounting plate (16).

8. The automatic paper feeding, positioning, and cutting device according to claim 7, characterized in that: The upper ends of the first side push plate (25) and the second side push plate (30) are also connected to a third guide member (39), and a transverse guide rod (32) is inserted inside the third guide member (39). The transverse guide rod (32) is installed on the lower side of the mounting plate (16).

9. The automatic paper feeding, positioning, and cutting device according to claim 1, characterized in that: The clamping assembly (5) includes a clamping block (33), both ends of which are mounted on the frame (1) via sliding components (34), and a hydraulic component is also connected to the lower side of the clamping block (33).

10. The automatic paper feeding, positioning, and cutting device according to claim 1, characterized in that: The cutting assembly (6) includes a cutting blade (40), which is connected to a power assembly (36) via a hinge assembly (35). The cutting blade (40) is provided with a guide groove (37), and a fixing block (38) that cooperates with the guide groove (37) is installed on the frame (1).

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