Grooving equipment for machining automobile seat framework

Abstract

The invention provides grooving equipment for automobile seat framework machining, and relates to the automobile seat framework machining technology, the grooving equipment comprises a base used for bearing equipment, an operation table arranged on the base and lifting columns fixedly connected to the two sides of the upper surface of the operation table, an adjusting assembly is arranged on the base, and clamping assemblies are arranged on the two sides of the upper surface of the operation table; and a moving assembly is arranged on the lifting column. By arranging the moving assembly and the grooving assembly, the grooving position is adjusted, normal grooving of automobile seat frameworks with different sizes can be effectively guaranteed, meanwhile, the grooving depth can be effectively controlled, then the tool replacement frequency is effectively reduced, and the problem that in the prior art, due to different automobile types, the machining efficiency is high is solved. The problems that according to different grooving positions, the distance between grooving tools needs to be adjusted as well, so that the application range of the automobile seat framework machining grooving equipment is limited, and the practicability and efficiency of the automobile seat framework machining grooving equipment are reduced are solved.

Description

Technical Field

[0001] The invention relates to the field of automobile seat frame processing, in particular to a grooving device for processing automobile seat frames. Background Art

[0002] Car seats are important components in automobile production. Car seats include car seat frames, and car seat frames require grooving equipment during production and processing.

[0003] However, when the existing technology is used, different fixing fixtures need to be installed according to different car models, and the spacing between the slotting tools also needs to be adjusted for different slotting positions. This limits the scope of application of the car seat frame processing and slotting equipment, and reduces the practicality and efficiency of the car seat frame processing and slotting equipment.

[0004] Therefore, we have made improvements to this and proposed a grooving equipment for processing automobile seat frames. Summary of the Invention

[0005] The purpose of the present invention is to provide a grooving device for processing automobile seat frames. By setting up various components, the problem that when the existing technology is used, different fixing fixtures need to be installed according to different automobile seat frames due to different vehicle models, and the spacing between the grooving tools also needs to be adjusted for different grooving positions, thereby limiting the scope of application of the automobile seat frame processing grooving device and reducing the practicality and efficiency of the automobile seat frame processing grooving device.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: A grooving device for processing an automobile seat frame, comprising a base for carrying the device, an operating table arranged on the base, and raising columns fixedly connected to both sides of the upper surface of the operating table; An adjustment component is provided on the base, clamping components are provided on both sides of the upper surface of the operating table, a moving component is provided on the lifting column, and a slotting component is provided on the moving component; The adjustment assembly includes a bracket fixedly mounted on the middle portion of the bottom wall of the base, and a double-shaft motor is fixedly connected via the bracket; The clamping assembly includes mounting plates fixedly connected to both sides of the upper surface of the operating table; The moving assembly includes a support column fixedly connected to the top of the lifting column.

[0007] As a preferred technical solution of the present application, the adjustment component also includes movable grooves opened on both sides of the upper surface of the operating table, and the number of the movable grooves is four. The four movable grooves are divided into a group of two. The operating table is slidably connected to a movable column through the movable groove, and the bottom end of the movable column is fixedly connected to a tooth plate. The tooth groove surfaces of the two groups of tooth plates are arranged opposite to each other, and the two groups of tooth plates are meshed with the same gear, and the two output ends of the dual-output shaft motor are respectively meshed with one side of the gear.

[0008] As a preferred technical solution of the present application, the top of the movable column is fixedly connected to a supporting member, a rotating shaft is movably connected to the supporting member, both ends of the rotating shaft are fixedly connected to the same linkage member, one side of the lower surface of the linkage member is fixedly connected to a clamping member, and an arc-shaped member is movably clamped on the clamping member.

[0009] As a preferred technical solution of the present application, one end of the linkage part is fixedly connected to a pressing part, wherein the top of a group of the pressing parts is fixedly connected to the same cross bar, the middle part of the cross bar is fixedly connected to a rotating part, both sides of the upper surface of the operating table are fixedly connected to matching parts, the outer arc surface of the rotating part and the upper surface of the matching part are fixedly connected to meshing teeth, and are meshed and connected through the meshing teeth.

[0010] As a preferred technical solution of the present application, the clamping assembly also includes a servo motor movably mounted on one of the mating parts, and a rotating part is movably connected to the middle of the surfaces of the opposite sides of the two mounting plates, and the two ends of the rotating part are movably connected to branch rods, one end of the branch rod is fixedly connected to a rotating shaft, and one side of the rotating shaft is movably connected to a clamping part.

[0011] As a preferred technical solution of the present application, the output end of the servo motor is connected through the mounting plate and fixedly connected to one of the rotating parts. Slide rods are fixedly installed on the top and bottom of one side surface of the mounting plate. Sliders are slidably engaged at both ends of the slide rods. One side of the slider is fixedly connected to the clamping member. The four clamping members are divided into a group of two, and the same vertical plate is fixedly connected between each group of clamping members.

[0012] As a preferred technical solution of the present application, the moving component also includes an extension platform fixedly connected to the top of the pillar, a screw rod is inserted through the middle of the two inner side walls of the extension platform, the threads at both ends of the screw rod are set in opposite directions, and the two ends of the screw rod are respectively fixedly connected to the crank handle, and the two sides of the two inner side walls of the extension platform are respectively fixedly connected to the limiting rods, and the two ends of the screw rod are respectively threaded through and connected to the moving platform, and the limiting rods are respectively inserted through and clamped on the moving platform.

[0013] As a preferred technical solution of the present application, the slotting assembly includes a shell fixedly connected to the lower surface of the movable platform, the inner top wall of the shell is fixedly connected to an electric push rod, the bottom end of the electric push rod is fixedly connected to a downward member, the bottom end of the downward member is movably connected to a horizontal plate, and a movable slot is provided at the bottom of the inner wall of one side of the shell.

[0014] As a preferred technical solution of the present application, slide rails are fixedly installed on both sides of the surface of one side of the shell, a stepper motor is movably installed on the slide rails, a cutter head is fixedly connected to the output end of the stepper motor, and the horizontal plate is movably clamped on the movable groove and fixedly connected to one side of the stepper motor.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of this application: 1. The movable assembly and slotting assembly are configured to adjust the slotting position, effectively ensuring the normal slotting of automobile seat frames of different sizes. At the same time, the slotting depth can be effectively controlled, thereby effectively reducing the frequency of tool replacement. This solves the problem that when using the existing technology, the spacing between slotting tools needs to be adjusted due to different slotting positions for different vehicle models, thus limiting the application range of automobile seat frame slotting equipment and reducing the practicality and efficiency of automobile seat frame slotting equipment. 2. Through the setting of the adjustment component and the clamping component, the car seat frame is fixed and restricted, so that when the back of the car seat frame is facing up, its two sides and the four corners of the back are in a restricted clamping state. At the same time, during the clamping process, it can effectively ensure that the car seat frame is always in the center position of the upper surface of the operating table, thereby effectively ensuring the stability and smoothness of the grooves on both sides during processing, and solving the problem of different fixing fixtures needing to be installed according to different car seat frames due to different car models when using the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the overall structural schematic diagrams of a grooving device for processing a car seat frame provided by this application; Figure 2 This is the second schematic diagram of the overall structure of a grooving device for processing an automobile seat frame provided by this application; Figure 3 A schematic structural diagram of a clamping assembly and an adjustment assembly for a grooving device for processing an automobile seat frame provided in this application; Figure 4 A schematic diagram of the structure of a clamping assembly for a grooving device for processing a car seat frame provided in this application; Figure 5 A schematic diagram of the internal structure of the base of a grooving device for processing a car seat frame provided in this application; Figure 6 A schematic diagram of the partial structure of an adjustment assembly of a slotting device for processing an automobile seat frame provided in this application; Figure 7 A schematic diagram of the structure of a moving assembly and a slotting assembly of a slotting device for processing a car seat frame provided in this application; Figure 8 This is a schematic structural diagram of a slotting assembly of a slotting device for processing an automobile seat frame provided in this application.

[0017] Indicated in the figure: 1. Base; 2. Operation table; 3. Raise the column; 4. Adjustment assembly; 41. Double-shaft motor; 42. Moving slot; 43. Moving column; 44. Tooth plate; 45. Gear; 46. Carrying member; 47. Rotating shaft; 48. Linkage member; 49. Snap-fit member; 410. Arc member; 411. Crossbar; 412. Rotating member; 413. Matching member; 414. Meshing teeth; 415. Pressing member; 5. Clamping assembly; 51. Mounting plate; 52. Servo motor; 53. Rotating member; 54. Branch rod; 55. Clamping member; 56. Slider; 57. Vertical plate; 58. Sliding rod; 6. Moving assembly; 61. Support; 62. Extension platform; 63. Screw; 64. Limiting rod; 65. Moving platform; 7. Slotting assembly; 71. Housing; 72. Electric push rod; 73. Downlink member; 74. Cross plate; 75. Movable slot; 76. Slide rail; 77. Stepper motor; 78. Cutting head. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0019] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein may be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is typically placed when in use, or the orientations or positional relationships commonly understood by those skilled in the art. Such terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0023] See also Figures 1 to 8 The present invention provides a technical solution: a grooving device for processing a car seat frame, Example 1 like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, this embodiment proposes a grooving device for processing automobile seat frames, including a base 1 for carrying the device, an operating table 2 arranged on the base 1, and lifting columns 3 fixedly connected to both sides of the upper surface of the operating table 2. An adjustment component 4 is provided on the base 1, clamping components 5 are provided on both sides of the upper surface of the operating table 2, a moving component 6 is provided on the lifting column 3, and a grooving component 7 is provided on the moving component 6.

[0024] Example 2 like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the adjustment component 4 includes a bracket fixedly mounted on the middle part of the inner bottom wall of the base 1, and is fixedly connected to a double-output shaft motor 41 through the bracket, and the adjustment component 4 also includes a moving groove 42 opened on both sides of the upper surface of the operating table 2, the number of the moving grooves 42 is four, and the four moving grooves 42 are divided into a group of two, and the operating table 2 is slidably connected to a moving column 43 through the moving groove 42, and the bottom end of the moving column 43 is fixedly connected to a tooth plate 44, and the tooth groove surfaces of the two groups of tooth plates 44 are arranged oppositely, and the two groups of tooth plates 44 are meshed with the same gear 45, and the two output ends of the double-output shaft motor 41 are respectively meshed with one side of the gear 45, and the moving column 4 3 is fixedly connected to the top of the operating table 2 with a bearing member 46, a rotating shaft 47 is movably engaged on the bearing member 46, and both ends of the rotating shaft 47 are fixedly connected to the same linkage member 48, a clamping member 49 is fixedly connected to one side of the lower surface of the linkage member 48, an arc-shaped member 410 is movably engaged on the clamping member 49, and a pressing member 415 is fixedly connected to one end of the linkage member 48, wherein the top of one group of pressing members 415 is fixedly connected to the same cross bar 411, and the middle part of the cross bar 411 is fixedly connected to the rotating member 412. Both sides of the upper surface of the operating table 2 are fixedly connected to the matching members 413, and the outer arc surface of the rotating member 412 and the upper surface of the matching member 413 are fixedly connected to meshing teeth 414, and are meshed with each other through the meshing teeth 414.

[0025] Demonstratively, after the staff places the car seat frame on the operating table 2, they start the double-output shaft motor 41. At this time, the motor output shaft rotates, which then drives the two gears 45 to rotate synchronously, and then drives the tooth plates 44 on the upper and lower surfaces to move, so that the two groups of moving columns 43 move inside the moving groove 42 and approach each other. At the same time, the moving column 43 drives the supporting member 46 to move synchronously. At this time, the rotating member 412 rotates on the mating member 413 through the meshing teeth 414 thereon, and then drives the cross bar 411 to rotate, so that the top of the pressing member 415 moves downward, and then the rotating shaft 47 rotates synchronously, while driving the linkage member 48 to press down, and making the arc member 410 contact with the surface of the car seat frame, thereby fixing the car seat frame.

[0026] Example 3 like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, as a preferred embodiment, on the basis of the above method, further, the clamping assembly 5 includes a mounting plate 51 fixedly connected to both sides of the upper surface of the operating table 2, the clamping assembly 5 also includes a servo motor 52 movably mounted on one of the mating parts 413, the middle part of the opposite side surface of the two mounting plates 51 are movably clamped with a rotating part 53, the two ends of the rotating part 53 are movably clamped with a branch rod 54, one end of the branch rod 54 is fixedly connected to a rotating shaft, and one side of the rotating shaft is movably clamped with a clamping part 55, the output end of the servo motor 52 is connected to the mounting plate 51 and fixedly connected to one of the rotating parts 53, the top and bottom of the surface of one side of the mounting plate 51 are fixedly installed with a sliding rod 58, the two ends of the sliding rod 58 are respectively slidably clamped with a slider 56, one side of the slider 56 is fixedly connected to the clamping part 55, the four clamping parts 55 are divided into a group of two, and the same vertical plate 57 is fixedly connected between each group of clamping parts 55.

[0027] Demonstratively, the staff starts the servo motor 52. At this time, the output end of the servo motor 52 drives the rotating part 53 to rotate, and pulls the branch rod 54 to move, while driving the clamping part 55 to contract. At this time, the clamping part 55 drives the slider 56 to move along the slide rod 58, and synchronously drives the vertical plate 57 to clamp the car seat frame.

[0028] Example 4 like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, as a preferred embodiment, on the basis of the above method, further, the moving component 6 includes a pillar 61 fixedly connected to the top of the lifting column 3, and the moving component 6 also includes an extension platform 62 fixedly connected to the top of the pillar 61, and a screw rod 63 is inserted through the middle of the two inner side walls of the extension platform 62, and the threads at both ends of the screw rod 63 are set in opposite directions. The two ends of the screw rod 63 are respectively fixedly connected to the crank, and the two sides of the two inner side walls of the extension platform 62 are respectively fixedly connected with the limiting rod 64, and the two ends of the screw rod 63 are respectively threaded through and connected to the moving platform 65, and the limiting rod 64 is respectively inserted through and connected to the moving platform 65.

[0029] For example, after fixing the car seat frame, the staff only needs to rotate the crank to rotate the screw rod 63, thereby driving the two moving platforms 65 to move closer to or away from each other along the screw rod 63, thereby completing the setting of the slot distance.

[0030] Example 5 like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, as a preferred embodiment, on the basis of the above method, further, the slotting assembly 7 includes a shell 71 fixedly connected to the lower surface of the movable platform 65, the inner top wall of the shell 71 is fixedly connected to the electric push rod 72, the bottom end of the electric push rod 72 is fixedly connected to the downward member 73, the bottom end of the downward member 73 is movably connected to the cross plate 74, a movable groove 75 is provided at the bottom of the inner wall of one side of the shell 71, and slide rails 76 are fixedly installed on both sides of the surface of one side of the shell 71, and a stepper motor 77 is movably installed on the slide rail 76, and the output end of the stepper motor 77 is fixedly connected to the cutter head 78, and the cross plate 74 is movably connected to the movable groove 75 and fixedly connected to one side of the stepper motor 77.

[0031] For example, after the worker has adjusted the slotting position, he only needs to start the electric push rod 72, and the pop-up of the output end of the electric push rod 72 can drive the downward movement of the downward member 73, and then drive the horizontal plate 74 to move downward. At this time, the stepper motor 77 is pulled downward by the horizontal plate 74. At this time, the output end of the stepper motor 77 is started again to drive the cutter head 78 to rotate, and the slotting operation can be performed.

[0032] Example 6 The solution in the above embodiment is further introduced below in combination with a specific working method, as described below for details: Specifically, when the grooving equipment for processing a car seat frame is working / in use: After the staff places the car seat frame on the operating table 2, they start the double-output shaft motor 41. At this time, the motor output shaft rotates, which in turn drives the two gears 45 to rotate synchronously, and then drives the tooth plates 44 on the upper and lower surfaces to move, so that the two sets of moving columns 43 move inside the moving groove 42 and approach each other. At the same time, the moving column 43 drives the bearing member 46 to move synchronously. At this time, the rotating member 412 rotates on the matching member 413 through the meshing teeth 414 thereon, and then drives the cross bar 411 to rotate, so that the top of the pressing member 415 moves downward, and then the rotating shaft 47 rotates synchronously, and at the same time drives the linkage member 48 to press down, and makes the arc member 410 contact with the surface of the car seat frame, thereby fixing the car seat frame. The staff starts the servo motor 52. At this time, the output of the servo motor 52 The output end drives the rotating part 53 to rotate, and pulls the branch rod 54 to move, and at the same time drives the clamping part 55 to contract. At this time, the clamping part 55 drives the slider 56 to move on the slide rod 58, and synchronously drives the vertical plate 57 to clamp the car seat frame. After fixing the car seat frame, the staff only needs to rotate the crank to rotate the screw rod 63, and then drive the two moving platforms 65 to move closer or farther away from each other along the screw rod 63, thereby completing the setting of the slotting distance. After the staff has adjusted the slotting position, they only need to start the electric push rod 72, and the pop-up of the output end of the electric push rod 72 can drive the downward movement of the downward part 73, and then drive the horizontal plate 74 to move downward. At this time, the stepping motor 77 is pulled downward by the horizontal plate 74. At this time, the output end of the stepping motor 77 is started again to drive the cutter head 78 to rotate, and the slotting operation can be performed.

[0033] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A grooving device for processing automobile seat frames, characterized in that: It comprises a base (1) for carrying equipment, an operating table (2) arranged on the base (1), and raising columns (3) fixedly connected to both sides of the upper surface of the operating table (2); An adjustment component (4) is provided on the base (1), clamping components (5) are provided on both sides of the upper surface of the operating table (2), a moving component (6) is provided on the lifting column (3), and a slotting component (7) is provided on the moving component (6); The adjustment assembly (4) comprises a bracket fixedly mounted on the middle portion of the inner bottom wall of the base (1), and a double-output shaft motor (41) is fixedly connected via the bracket; The clamping assembly (5) comprises mounting plates (51) fixedly connected to both sides of the upper surface of the operating table (2); The moving assembly (6) comprises a support column (61) fixedly connected to the top of the lifting column (3).

2. The grooving equipment for processing an automobile seat frame according to claim 1, characterized in that: The adjustment component (4) further includes movable grooves (42) opened on both sides of the upper surface of the operating table (2), the number of the movable grooves (42) is four, and the four movable grooves (42) are divided into a group of two. The operating table (2) is slidably connected to a movable column (43) through the movable groove (42), and the bottom end of the movable column (43) is fixedly connected to a tooth plate (44). The tooth groove surfaces of the two groups of the tooth plates (44) are arranged opposite to each other, and the two groups of the tooth plates (44) are meshed with the same gear (45). The two output ends of the double-output shaft motor (41) are respectively meshed with one side of the gear (45).

3. The grooving equipment for processing an automobile seat frame according to claim 2, characterized in that: The top end of the movable column (43) is fixedly connected to a bearing member (46), a rotating shaft (47) is movably connected to the bearing member (46), both ends of the rotating shaft (47) are fixedly connected to the same linkage member (48), a clamping member (49) is fixedly connected to one side of the lower surface of the linkage member (48), and an arc-shaped member (410) is movably connected to the clamping member (49).

4. The grooving equipment for processing an automobile seat frame according to claim 3, characterized in that: One end of the linkage member (48) is fixedly connected to a pressing member (415), wherein the top of a group of the pressing members (415) is fixedly connected to the same cross bar (411), the middle of the cross bar (411) is fixedly connected to a rotating member (412), both sides of the upper surface of the operating table (2) are fixedly connected to matching members (413), and the outer arc surface of the rotating member (412) and the upper surface of the matching member (413) are fixedly connected to meshing teeth (414), and are meshed with each other through the meshing teeth (414).

5. The grooving equipment for processing an automobile seat frame according to claim 4, characterized in that: The clamping assembly (5) further comprises a servo motor (52) movably mounted on one of the mating parts (413), a rotating part (53) is movably engaged in the middle of the surfaces of the two opposite sides of the two mounting plates (51), and a branch rod (54) is movably engaged at both ends of the rotating part (53), one end of the branch rod (54) is fixedly connected to a rotating shaft, and a clamping part (55) is movably engaged on one side of the rotating shaft.

6. The grooving equipment for processing an automobile seat frame according to claim 5, characterized in that: The output end of the servo motor (52) is connected to the mounting plate (51) and is fixedly connected to one of the rotating parts (53). The top and bottom of one side surface of the mounting plate (51) are fixedly mounted with a slide bar (58). The two ends of the slide bar (58) are respectively slidably engaged with a slider (56). One side of the slider (56) is fixedly connected to the clamping part (55). The four clamping parts (55) are divided into two groups, and the same vertical plate (57) is fixedly connected between each group of clamping parts (55).

7. The grooving equipment for processing an automobile seat frame according to claim 1, characterized in that: The moving assembly (6) further comprises an extension platform (62) fixedly connected to the top end of the pillar (61), a screw rod (63) is inserted through the middle of the two inner side walls of the extension platform (62), the threads at both ends of the screw rod (63) are arranged in opposite directions, and the two ends of the screw rod (63) are respectively fixedly connected to a crank, and the two sides of the two inner side walls of the extension platform (62) are respectively fixedly connected to a limiting rod (64), and the two ends of the screw rod (63) are respectively threadedly inserted through the moving platform (65), and the limiting rod (64) is respectively inserted through the moving platform (65) and is respectively clamped on the moving platform (65).

8. The grooving equipment for processing an automobile seat frame according to claim 7, characterized in that: The slotting assembly (7) comprises a shell (71) fixedly connected to the lower surface of the movable platform (65), an electric push rod (72) fixedly connected to the inner top wall of the shell (71), a descending member (73) fixedly connected to the bottom end of the electric push rod (72), a horizontal plate (74) movably connected to the bottom end of the descending member (73), and a movable slot (75) is provided at the bottom of the inner side wall of one side of the shell (71).

9. The grooving equipment for processing an automobile seat frame according to claim 8, characterized in that: Slide rails (76) are fixedly mounted on both sides of one side surface of the housing (71), a stepper motor (77) is movably mounted on the slide rails (76), a cutter head (78) is fixedly connected to the output end of the stepper motor (77), and the transverse plate (74) is movably engaged with the movable groove (75) and fixedly connected to one side of the stepper motor (77).

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