Automatic assembly mechanism for automobile headrest rod and headrest

Abstract

The invention discloses an automatic assembly mechanism for a headrest rod and a headrest of an automobile, relates to the field of automatic assembly mechanisms, and solves the problem that when the existing automatic assembly mechanism for the headrest rod and the headrest of an automobile is used, the metal headrest rod is prone to deviation when being plugged into the headrest, thereby causing wear on the surface of the headrest. The invention comprises a base, a side plate, a positioning mechanism and a conveying mechanism, wherein a device box is slidably connected between two sets of side plates, the positioning mechanism comprises a fixing box and a flip plate, and the conveying mechanism comprises a driving column and a rotating part. The automatic assembly mechanism for the headrest rod and the headrest of an automobile can facilitate automatic positioning of the headrest by placing the headrest into the fixing box and inserting the tip of the flip plate into the docking hole at the bottom end of the headrest, and can also gradually control the flip plate to be withdrawn from the docking hole and unfolded when the metal rod is inserted, so as to avoid friction between the tip of the metal rod and the cortex around the docking hole, and drive the device box to move so that the metal rod is gradually pushed to the bottom end of the connecting hole to complete the docking.

Description

Technical Field

[0001] The invention relates to the technical field of automatic assembly mechanisms, in particular to an automatic assembly mechanism for an automobile headrest rod and a headrest. Background Art

[0002] In automobile parts, the assembly methods of various parts are often different due to their different functions. Therefore, in the assembly of automobile parts, special assembly methods corresponding to the components are often used for assembly.

[0003] Among them, the car headrest is an indispensable part of the car, which is mainly composed of the headrest and two sets of metal rods with slots. Since the surface of the headrest is generally made of leather or imitation leather, it is very easy to produce scratches when it is in contact with the metal end face. When the metal rod is connected to the headrest, the inner diameter of the socket on the headrest is almost the same as the diameter of the metal rod, which makes it difficult to complete the connection in one go. If there is a deviation, the top of the metal rod will contact the surrounding leather, resulting in scratches and wear, affecting product quality. To this end, we propose an automatic assembly mechanism for the car headrest rod and the headrest. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic assembly mechanism for a car headrest rod and a headrest, which is convenient for improving the docking efficiency between the metal headrest rod and the headrest and reducing the wear of the headrest surface, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic assembly mechanism for a headrest rod and a headrest of an automobile, comprising a base, a positioning mechanism and a conveying mechanism, both sides of the base are fixedly connected with side panels, a device box is slidably connected between the two groups of side panels in the horizontal direction, the positioning mechanism comprises a fixing box installed between the side panels, the bottom of the fixing box is provided with two groups of connecting holes, a plurality of groups of flip plates are arranged in the connecting holes, and the plurality of groups of flip plates can be flipped and closed to form a conical structure, which is used to put the headrest into the fixing box, and make the tip of the flip plate inserted into the docking hole at the bottom of the headrest, so as to realize the automatic positioning of the headrest, and at the same time, the flip plate can be gradually controlled to be withdrawn from the docking hole when the metal rod is inserted. The conveying mechanism comprises two groups of driving columns rotatably connected to the device box, the driving columns are provided with plugging holes which can be plugged into the bottom ends of the metal rods, the driving columns pass through the device box, and the device box is provided with a rotating member for driving the driving columns to rotate when the device box moves. By driving the device box to move, the metal rod is gradually pushed to the bottom end of the connecting hole, and at the same time, the rotating member is linked to drive the metal rod to rotate, so as to complete the docking and fixation between the metal rod and the docking hole, thereby improving the docking efficiency between the metal headrest rod and the headrest and reducing the wear on the surface of the headrest.

[0006] Preferably, the positioning mechanism also includes a flip cover hingedly connected to the fixing box, the bottom surface of the fixing box is fixedly connected to two sets of mounting brackets, the side surface of the mounting bracket is slidably connected to a lifting tube in a vertical direction, the upper side of the lifting tube is fixedly connected to a connecting ring, and the connecting ring is fixedly connected to multiple sets of mounting blocks, the side surfaces of the mounting blocks are fixedly connected to a first rotating shaft, the two sides of the flip plate are respectively rotatably connected to the first rotating shaft, and the outer wall of the first rotating shaft is fixedly connected to a spring fixedly connected to the flip plate. The lifting tube is provided with a lifting member for driving the flip plate to move downward when the metal rod moves up, so as to facilitate the headrest to be placed in the fixing box and make the tip of the flip plate insert into the docking hole at the bottom end of the headrest, so as to realize automatic positioning of the headrest, and at the same time, the flip plate can be gradually controlled to be pulled out of the docking hole and unfolded when the metal rod is inserted, so as to position and guide the transportation of the metal rod to avoid friction between the tip of the metal rod and the cortex around the docking hole.

[0007] Preferably, the lifting member includes a fixing ring fixedly mounted on the mounting frame, a plurality of groups of support rods are evenly fixedly connected to the fixing ring, a second rotating shaft is rotatably connected between the plurality of support rods, a driving wheel is coaxially fixedly connected to the middle of the second rotating shaft, an outer gear ring is coaxially fixedly connected to both sides of the driving wheel, a first rack meshing with the outer gear ring is fixedly connected to the lifting tube, and a reset spring fixedly connected to the fixing ring is fixedly connected to the bottom surface of the lifting tube, so as to drive the flip plate to move downward when the metal rod moves upward.

[0008] Preferably, the conveying mechanism also includes a driving motor fixedly mounted on the base, the output end of the driving motor is coaxially fixedly connected with a threaded rod, the threaded rod passes through the device box and is threadedly connected to the device box, the device box is provided with a sliding member for driving the fixed box to slide in a horizontal direction after the metal rod reaches a set position, and the base is provided with a pushing member for pushing the metal rod to move up for docking, so that the metal rod is gradually pushed to the bottom end of the connecting hole by driving the device box to move, and at the same time the rotating member is linked to drive the metal rod to rotate, thereby completing the docking and fixation between the metal rod and the docking hole.

[0009] Preferably, the pushing member includes a pushing rod that is slidably connected to the inner wall of the plug-in hole in a vertical direction, the bottom end of the pushing rod is fixedly connected to a pushing plate, the bottom surface of the pushing plate is fixedly connected to a first spring, the bottom surface of the first spring is fixedly connected to a slope block, a plurality of groups of guide rods are evenly and fixedly connected to the slope block, the guide rod passes through the pushing plate and is slidably connected to the pushing plate in a vertical direction, the bottom surface of the slope block slides in contact with the inclined surface on the base, so as to facilitate pushing the metal rod to move upward for docking.

[0010] Preferably, the rotating member includes a first gear fixedly mounted on the bottom end of the driving column, the bottom surface of the device box is rotatably connected to the second gear, the second gear is meshed with the first gear on both sides, the top surface of the push plate is fixedly connected to a third spring, the bottom surface of the first gear is coaxially rotatably connected to a rotating ring, the top of the third spring is fixedly connected to the rotating ring, and a second rack meshed with the first gear is fixedly connected to the side plate on one side, the pushing rod passes through the first gear and can be rotated and lifted in the first gear, so as to drive the driving column to rotate when the device box moves.

[0011] Preferably, the sliding member includes a guide frame fixedly mounted on the upper side of the side panel, both sides of the fixed box are fixedly connected with sliding blocks which are slidably connected to the inner wall of the guide frame in a horizontal direction, the side of the sliding block is fixedly connected with a second spring which is fixedly connected to the guide frame, and the device box is fixedly connected with a pushing frame for pushing the fixed box to move synchronously, so as to facilitate the fixed box to slide in the horizontal direction after the metal rod reaches the set position.

[0012] Preferably, a slope groove is provided on the base, and the bottom of the slope block is rotatably connected to a roller that is rollingly connected to the inner wall of the slope groove, so as to facilitate the limiting and guiding of the slope block and prevent the first gear from driving the slope block to rotate and deviate.

[0013] Preferably, the outer wall of the flip plate is made of elastic rubber material to reduce wear on the bottom of the headrest.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The invention provides an automatic assembly mechanism for a headrest rod and a headrest of an automobile, which solves the problem that when the existing automatic assembly mechanism for a headrest rod and a headrest of an automobile is used, the metal headrest rod is easily deviated when being plugged into the headrest, thereby causing wear on the surface of the headrest. The invention is convenient for placing the headrest into the fixing box and inserting the tip of the flip plate into the docking hole at the bottom end of the headrest, so that the automatic positioning of the headrest can be achieved. At the same time, the flip plate can be gradually controlled to be withdrawn from the docking hole and unfolded when the metal rod is inserted, so that the transportation of the metal rod is positioned and guided, and friction between the tip of the metal rod and the cortex around the docking hole is avoided. By driving the device box to move, the metal rod is gradually pushed to the bottom end of the connecting hole, and the linkage rotating part drives the metal rod to rotate, so as to complete the docking and fixing between the metal rod and the docking hole. The device is convenient and efficient to operate, and the docking is accurate, which effectively avoids the situation that the top end of the metal rod scratches the surface of the headrest due to docking deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the sliding member of the present invention;

[0018] Figure 3 It is a schematic diagram of the local structure of the conveying mechanism of the present invention;

[0019] Figure 4 for Figure 3 A magnified image of the middle A area;

[0020] Figure 5 It is a schematic diagram of the local structure of the rotating part of the present invention;

[0021] Figure 6 for Figure 5 Enlarged view of area B;

[0022] Figure 7 It is a schematic diagram of the partial structure of the pusher of the present invention;

[0023] Figure 8 for Figure 7 Enlarged view of area C in the middle;

[0024] Fig. 9 for Figure 7 Enlarged view of area D in the middle;

[0025] Fig.10 It is a schematic diagram of the local structure of the positioning mechanism of the present invention;

[0026] Fig.11 It is a partial structural cross-sectional view of the positioning mechanism of the present invention;

[0027] Fig.12 for Fig.11 Enlarged view of area E.

[0028] In the figure: 1-base; 2-side plate; 3-device box; 4-positioning mechanism; 5-fixed box; 6-connecting hole; 7-turning plate; 8-conveying mechanism; 9-driving column; 10-plug hole; 11-rotating member; 12-turning cover; 13-mounting frame; 14-lifting tube; 15-connecting ring; 16-mounting block; 17-first rotating shaft; 18-spring spring; 19-lifting member; 20-fixed ring; 21-support rod; 22-second rotating shaft; 23-driving wheel; 24-external gear ring; 25-first rack; 26-reset spring; 27-drive motor; 28-threaded rod; 29-sliding member; 30-pushing member; 31-pushing rod; 32-pushing plate; 33-first spring; 34-slope block; 35-guide rod; 36-first gear; 37-second gear; 38-third spring; 39-rotating ring; 40-second rack; 41-guide frame; 42-sliding block; 43-second spring; 44-pushing frame; 45-slope groove; 46-roller; 47-headrest; 48-metal rod; 49-docking hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] See also Figure 1-Figure 12, an automatic assembly mechanism for a headrest rod and a headrest of an automobile shown in the figure includes a base 1, a positioning mechanism 4 and a conveying mechanism 8. Side panels 2 are fixedly connected on both sides of the base 1. A device box 3 is slidably connected between the two sets of side panels 2 in the horizontal direction. The positioning mechanism 4 includes a fixing box 5 installed between the side panels 2. Two sets of connecting holes 6 are opened at the bottom of the fixing box 5. Multiple sets of flip plates 7 are arranged in the connecting holes 6. The multiple sets of flip plates 7 can be flipped and closed to form a conical structure, which is used to put a headrest 47 into the fixing box 5, and the tip of the flip plate 7 is inserted into the docking hole 49 at the bottom of the headrest 47 to realize the automatic positioning of the headrest 47. At the same time, the flip plate 7 can be gradually controlled from when the metal rod 48 is inserted. The metal rod 48 is pulled out and unfolded from the docking hole 49 to position and guide the delivery of the metal rod 48 to avoid friction between the tip of the metal rod 48 and the cortex around the docking hole 49. The delivery mechanism 8 includes two groups of driving columns 9 rotatably connected to the device box 3. The driving columns 9 are provided with plugging holes 10 that can be plugged into the bottom end of the metal rod 48. The driving columns 9 pass through the device box 3. The device box 3 is provided with a rotating member 11 for driving the driving columns 9 to rotate when the device box 3 moves. By driving the device box 3 to move, the metal rod 48 is gradually pushed to the bottom end of the connecting hole 6. At the same time, the linkage rotating member 11 drives the metal rod 48 to rotate, thereby completing the docking and fixation between the metal rod 48 and the docking hole 49.

[0032] See also Figure 1-Figure 12 The positioning mechanism 4 shown in the figure also includes a flip cover 12 hinged to the fixed box 5, two sets of mounting frames 13 are fixedly connected to the bottom surface of the fixed box 5, and a lifting tube 14 is slidably connected to the side of the mounting frame 13 in the vertical direction. A connecting ring 15 is fixedly connected to the upper side of the lifting tube 14, and a plurality of mounting blocks 16 are fixedly connected to the connecting ring 15. A first rotating shaft 17 is fixedly connected to the side of the mounting block 16, and both sides of the flip plate 7 are respectively rotatably connected to the first rotating shaft 17. The outer wall of the first rotating shaft 17 is fixedly connected to a clockwork spring 18 fixedly connected to the flip plate 7. A lifting member 19 is provided in the lifting tube 14 for driving the flip plate 7 to move downward when the metal rod 48 moves upward.

[0033] See also Figure 5-Figure 12 The lifting member 19 shown in the figure includes a fixing ring 20 fixedly mounted on the mounting frame 13, a plurality of groups of support rods 21 are evenly fixedly connected to the fixing ring 20, a second rotating shaft 22 is rotatably connected between the plurality of groups of support rods 21, a driving wheel 23 is coaxially fixedly connected to the middle of the second rotating shaft 22, an outer gear ring 24 is coaxially fixedly connected to both sides of the driving wheel 23, a first rack 25 meshing with the outer gear ring 24 is fixedly connected to the lifting tube 14, a reset spring 26 fixedly connected to the fixing ring 20 is fixedly connected to the bottom surface of the lifting tube 14, and the outer wall of the flip plate 7 is made of elastic rubber material.

[0034] In this embodiment, the flip cover 12 is opened and the headrest 47 is placed into the fixing box 5. At this time, the top of the flip plate 7 is closed into a cone, so that the docking hole 49 at the bottom of the headrest 47 can be docked and positioned with the top of the flip plate 7. The outer wall of the flip plate 7 is made of elastic rubber material, which is convenient for reducing the wear on the bottom of the headrest. If the flip plate 7 does not position the docking hole 49, a slight deviation of the headrest 47 in the fixing box 5 will cause the position of the docking hole 49 to be misaligned with the connecting hole 6, affecting the vertical insertion of the metal rod 48. After the flip plate 7 has completed the positioning of the docking hole 49, the flip cover 12 is covered to support and fix the top of the headrest 47 to complete the positioning of the headrest 47.

[0035] During the upward movement of the metal rod 48, the side of the metal rod 48 will collide with the outer wall of the driving wheel 23. Under the rolling guidance of the multiple sets of driving wheels 23, the metal rod 48 is accurately poured into the connecting hole 6. Since the metal rod 48 is a strip of metal, even a slight deviation will cause the top of the metal rod 48 to tilt when it is fixed, affecting the accuracy of docking. The guidance of the driving wheel 23 makes the metal rod 48 more accurate when inserted. At the same time, the outer wall of the driving wheel 23 is provided with horizontal stripes and is relatively smooth in the horizontal direction, so that the resistance of the metal rod 48 is small when it rotates, but the friction is large when it moves upward, and the metal rod is pushed by the conveying mechanism 8. 48 moves up, the metal rod 48 drives the driving wheel 23 to rotate, and the driving wheel 23 drives the first rotating shaft 17 and the outer gear ring 24 to rotate, so that the first rack 25 drives the lifting tube 14 to move down, and the lifting tube 14 drives the connecting ring 15 and the mounting block 16 to move down together, so that the flip plate 7 gradually slides out of the docking hole 49. During this process, the metal rod 48 continuously moves up, and the top end is pressed against the inner wall of the flip plate 7 to push, so that the flip plate 7 is expanded to the surroundings until the metal rod 48 reaches the bottom of the docking hole 49. At this time, the tip of the flip plate 7 just slides out of the docking hole 49, and the metal rod 48 continues to move up to be inserted into the docking hole 49 to complete the docking operation.

[0036] After the docking installation is completed, the flip cover 12 is opened and the headrest 47 and the metal rod 48 are pulled upward together. The operation is convenient and efficient, the docking is accurate, and the docking deviation is effectively avoided so that the top of the metal rod 48 scratches the surface of the headrest 47. Since the outer wall of the bottom end of the metal rod 48 is not provided with threads and is relatively smooth, when the headrest 47 is taken out, the friction of the metal rod 48 on the driving wheel 23 is small, and the lifting tube 14 moves down to the set position and no longer moves down. After the metal rod 48 is pulled out, the reset spring 26 rebounds and pushes the lifting tube 14 to move upward. Driven by the clockwork spring 18, the flip plate 7 closes again, and the tip extends out of the fixing box 5 again through the connecting hole 6, which is convenient for positioning the docking hole 49 of the next group of headrest 47.

[0037] Example 2

[0038] See also Figure 1-Figure 9 Embodiment 2 is described. This embodiment further describes Embodiment 1. The conveying mechanism 8 shown in the figure also includes a driving motor 27 fixedly mounted on the base 1. The driving motor 27 is preferably of model YYHS-40. The output end of the driving motor 27 is coaxially fixedly connected with a threaded rod 28. The threaded rod 28 passes through the device box 3 and is threadedly connected to the device box 3. The device box 3 is provided with a sliding member 29 for driving the fixed box 5 to slide in a horizontal direction after the metal rod 48 reaches a set position. The base 1 is provided with a pushing member 30 for pushing the metal rod 48 to move up and dock.

[0039] See also Figure 3-Figure 9 The pushing member 30 shown in the figure includes a pushing rod 31 that is slidably connected to the inner wall of the plug hole 10 in the vertical direction, and the bottom end of the pushing rod 31 is fixedly connected to a pushing plate 32, and the bottom surface of the pushing plate 32 is fixedly connected to a first spring 33, and the bottom surface of the first spring 33 is fixedly connected to a slope block 34, and a plurality of groups of guide rods 35 are evenly fixedly connected to the slope block 34, and the guide rods 35 pass through the pushing plate 32 and are slidably connected to the pushing plate 32 in the vertical direction. The bottom surface of the slope block 34 is slidably fitted with the inclined surface on the base 1, and a slope groove 45 is opened on the base 1, and the bottom of the slope block 34 is rotatably connected to a roller 46 that is rollingly connected to the inner wall of the slope groove 45.

[0040] See also Figure 2-Figure 6 The sliding member 29 shown in the figure includes a guide frame 41 fixedly installed on the upper side of the side plate 2, and both sides of the fixed box 5 are fixedly connected with sliding blocks 42 that are horizontally slidably connected to the inner wall of the guide frame 41, and the side of the sliding block 42 is fixedly connected with a second spring 43 that is fixedly connected to the guide frame 41, and a pushing frame 44 for pushing the fixed box 5 to move synchronously is fixedly connected to the device box 3.

[0041] In this embodiment, the driving motor 27 is controlled to drive the threaded rod 28 to rotate in the direction so that the device box 3 can slide back and forth in the horizontal direction. In the initial state, the fixed box 5 is at the end of the guide frame 41 away from the driving motor 27, and the device box 3 is farther away from the driving motor 27. At this time, the fixed box 5 and the device box 3 are misaligned, and the top of the device box 3 is exposed, which is convenient for inserting the bottom end of the metal rod 48 into the plug hole 10 for fixation. The threaded rod 28 drives the device box 3 to slide horizontally with the bottom of the fixed box 5. At this time, the plug hole 10 and the connecting hole 6 are on the same vertical line, and the side of the pushing frame 44 contacts the fixed box 5, so that the device box 3 can drive the fixed box 5 to slide synchronously during the subsequent movement process. The sliding block 42 slides in the guide frame 41 to compress the second spring 43. When sliding in the opposite direction, the second spring 43 rebounds, and the fixed box 5 is pushed to move to one end of the guide frame 41 again.

[0042] When the device box 3 and the fixed box 5 slide together toward the side of the drive motor 27, the roller 46 gradually rolls upward in the slope groove 45, and at the same time the slope block 34 gradually moves upward, pushing the first spring 33, so that the push plate 32 and the push rod 31 move upward together, and the push rod 31 moves upward in the plug-in hole 10 to push the top end of the metal rod 48 upward until it is inserted into the docking hole 49 to complete the installation. The setting of the first spring 33 allows the docking to have a certain buffer force, which can compress the first spring 33 during docking, gradually increase the thrust on the metal rod 48, and avoid direct conflict. Once an offset occurs, it will cause damage to the accessories.

[0043] Example 3

[0044] See also Figure 5-Figure 9 Embodiment 3 is described. This embodiment further describes embodiment 1. The rotating member 11 shown in the figure includes a first gear 36 fixedly mounted on the bottom end of the driving column 9. The bottom surface of the device box 3 is rotatably connected to the second gear 37. The second gear 37 is meshed with the first gears 36 on both sides. The top surface of the push plate 32 is fixedly connected to a third spring 38. The bottom surface of the first gear 36 is coaxially rotatably connected to a rotating ring 39. The top end of the third spring 38 is fixedly connected to the rotating ring 39. A second rack 40 meshing with the first gear 36 is fixedly connected to the side plate 2 on one side. The push rod 31 passes through the first gear 36 and can be rotated and lifted in the first gear 36.

[0045] In this embodiment, when the device box 3 slides, it drives the first gear 36 to roll on the second rack 40, thereby driving the driving column 9 to rotate, so that the metal rod 48 rotates while moving upward under the push of the pushing block, and the first gears 36 on both sides are driven to rotate synchronously by the second gear 37. Since the threads of the metal rod 48 during the upward movement process do not necessarily directly dock with the threads in the docking hole 49, the first spring 33 is set to have a certain buffer height, which can always push the metal rod 48 to move upward until the threads are aligned and continue to move upward and fixed.

[0046] This structure is only applicable to the structure in which the metal rod 48 and the headrest 47 are connected by threads. When the metal rod 48 and the headrest 47 are fixed by direct plug-in, the second rack 40 can be removed so that the metal rod 48 no longer rotates and can be directly pushed to the upper side to be docked and fixed with the docking hole 49.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic assembly mechanism for a headrest rod and a headrest of an automobile, characterized in that: include: A base (1), wherein both sides of the base (1) are fixedly connected to side panels (2), and a device box (3) is slidably connected between two sets of side panels (2) in a horizontal direction; Also includes: A positioning mechanism (4), the positioning mechanism (4) comprising a fixing box (5) installed between the side plates (2), the fixing box (5) having two groups of communicating holes (6) at the bottom, the communicating holes (6) having a plurality of groups of flip plates (7) arranged therein, the plurality of groups of flip plates (7) being capable of flipping and closing to form a conical structure, for placing the headrest into the fixing box (5), and allowing the tip of the flip plate (7) to be inserted into the docking hole at the bottom of the headrest, thereby realizing automatic positioning of the headrest, and at the same time being capable of gradually controlling the flip plate (7) to be withdrawn from the docking hole and unfolded when the metal rod is inserted, thereby providing positioning guidance for the transportation of the metal rod, thereby preventing the tip of the metal rod from rubbing against the cortex around the docking hole; The conveying mechanism (8) comprises two sets of driving columns (9) rotatably connected to the device box (3), the driving columns (9) are provided with plugging holes (10) capable of plugging into the bottom end of the metal rod, the driving columns (9) penetrate the device box (3), the device box (3) is provided with a rotating member (11) for driving the driving columns (9) to rotate when the device box (3) moves, and by driving the device box (3) to move, the metal rod is gradually pushed toward the bottom end of the connecting hole (6), and at the same time, the rotating member (11) is linked to drive the metal rod to rotate, so that the metal rod and the docking hole are docked and fixed, and the positioning mechanism (4) also includes a flip cover (12) hingedly connected to the fixing box (5). ), the bottom surface of the fixed box (5) is fixedly connected with two groups of mounting frames (13), the side surfaces of the mounting frames (13) are slidably connected with lifting tubes (14) in the vertical direction, the upper side of the lifting tubes (14) is fixedly connected with a connecting ring (15), the connecting ring (15) is fixedly connected with a plurality of mounting blocks (16), the side surfaces of the mounting blocks (16) are fixedly connected with a first rotating shaft (17), the two sides of the flip plate (7) are respectively rotatably connected with the first rotating shaft (17), the outer wall of the first rotating shaft (17) is fixedly connected with a spring (18) fixedly connected with the flip plate (7), the lifting tube (14) is provided with a lifting member (19) for driving the flip plate (7) to move downward when the metal rod moves upward, the The lifting member (19) comprises a fixing ring (20) fixedly mounted on the mounting frame (13), a plurality of groups of support rods (21) are evenly fixedly connected to the fixing ring (20), a second rotating shaft (22) is rotatably connected between the plurality of groups of support rods (21), a driving wheel (23) is coaxially fixedly connected to the middle of the second rotating shaft (22), an outer toothed ring (24) is coaxially fixedly connected to both sides of the driving wheel (23), a first rack (25) meshing with the outer toothed ring (24) is fixedly connected to the lifting tube (14), a return spring (26) fixedly connected to the fixing ring (20) is fixedly connected to the bottom surface of the lifting tube (14), and the conveying mechanism (8) further comprises a fixing member (25) fixedly mounted on the base (1) A drive motor (27), wherein the output end of the drive motor (27) is coaxially fixedly connected to a threaded rod (28), the threaded rod (28) passes through the device box (3) and is threadedly connected to the device box (3), the device box (3) is provided with a sliding member (29) for driving the fixed box (5) to slide in a horizontal direction after the metal rod reaches a set position, the base (1) is provided with a pushing member (30) for pushing the metal rod to move upward for docking, the pushing member (30) comprises a pushing rod (31) slidably connected to the inner wall of the plug hole (10) in a vertical direction, the bottom end of the pushing rod (31) is fixedly connected to a pushing plate (32), and the bottom surface of the pushing plate (32) is fixedly connected to a first spring (33),The bottom surface of the first spring (33) is fixedly connected to a slope block (34), and a plurality of guide rods (35) are evenly fixedly connected to the slope block (34). The guide rods (35) penetrate the push plate (32) and are slidably connected to the push plate (32) in a vertical direction. The bottom surface of the slope block (34) is slidably fitted with the inclined surface on the base (1). The rotating member (11) includes a first gear (36) fixedly mounted on the bottom end of the driving column (9). The bottom surface of the device box (3) is rotatably connected to a second gear (37). The second gear (37) is The gear (37) is meshed with the first gears (36) on both sides; the top surface of the push plate (32) is fixedly connected to a third spring (38); the bottom surface of the first gear (36) is coaxially rotatably connected to a rotating ring (39); the top end of the third spring (38) is fixedly connected to the rotating ring (39); a second rack (40) meshing with the first gear (36) is fixedly connected to the side plate (2) on one side; the push rod (31) passes through the first gear (36) and can be rotated and raised and lowered inside the first gear (36).

2. The automatic assembly mechanism for a headrest rod and a headrest according to claim 1, characterized in that: The sliding member (29) comprises a guide frame (41) fixedly mounted on the upper side of the side plate (2); sliding blocks (42) are fixedly connected to both sides of the fixed box (5) and are slidably connected to the inner wall of the guide frame (41) in a horizontal direction; a second spring (43) is fixedly connected to the side of the sliding block (42) and is fixedly connected to the guide frame (41); and a pushing frame (44) is fixedly connected to the device box (3) and is used to push the fixed box (5) to move synchronously.

3. The automatic assembly mechanism for a headrest rod and a headrest according to claim 1, characterized in that: The base (1) is provided with a slope groove (45), and the bottom of the slope block (34) is rotatably connected to a roller (46) that is rollingly connected to the inner wall of the slope groove (45).

4. The automatic assembly mechanism for a headrest rod and a headrest according to claim 1, characterized in that: The outer wall of the flip plate (7) is made of elastic rubber material.

Images