An automatic feeding mechanism for headrest tubes

Abstract

The utility model belongs to headrest tube processing technical field. It solved the problem of taking and placing time -consuming and labor -intensive when headrest tube weld joint detects in prior art. Provide a kind of automatic feeding mechanism for headrest tube, including rack and storage bin, the front side wall of storage bin is sequentially provided with first step and second step from bottom to top, the front end of first step face, second step face and the bottom wall of storage bin is inclined downward, first step is vertically and side by side and is equipped with several first let -out hole, second step is vertically and side by side and is equipped with several second let -out hole, rack is also provided with several first jacking plate and several second jacking plate, several first jacking plate can simultaneously extend corresponding first let -out hole and lift between the bottom wall of storage bin and first step face, several second jacking plate can simultaneously extend corresponding second let -out hole and lift between first step face and second step face. The utility model has the advantages of being capable of realizing the automatic feeding of headrest tube.

Description

Technical Field

[0001] This utility model belongs to the field of headrest tube processing technology, and relates to an automatic feeding mechanism for headrest tubes. Background Technology

[0002] Currently, headrest tubes require multiple bending processes before being processed into headrest frames. Before bending, the headrest tubes undergo weld inspection. If the weld inspection is satisfactory, the headrest tube proceeds to the next bending step; if the weld inspection fails, the headrest tube is placed in a defective product collection bin for unified recycling. Due to the considerable length of the headrest tubes, traditional feeding machines cannot be used. Therefore, for each weld inspection, workers must bend over to pick up the headrest tubes from the hopper and move them to the weld inspection table, a time-consuming and labor-intensive operation. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an automatic feeding mechanism for headrest tubes. The technical problem this invention aims to solve is how to achieve automatic feeding of headrest tubes.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] An automatic feeding mechanism for headrest tubes includes a frame and a storage bin mounted on the frame. The storage bin's front sidewall is characterized by having a first step with a first stepped surface and a second step with a second stepped surface, arranged sequentially from bottom to top. The first step, the second step, and the front end of the storage bin's bottom wall slope downwards. A material-blocking structure for limiting material movement is provided on the second step. The first step has several vertically arranged first clearance holes with their upper and lower ends located on the first step surface and the storage bin's bottom wall, respectively. The second step has several vertically arranged second clearance holes with their upper and lower ends located on the second step surface and the first step surface, respectively. The frame also has several first lifting plates located directly below the first clearance holes and several second lifting plates located directly below the second clearance holes. The first lifting plates can simultaneously extend out of their corresponding first clearance holes and move up and down between the storage bin's bottom wall and the first step surface. The second lifting plates can simultaneously extend out of their corresponding second clearance holes and move up and down between the first and second step surfaces.

[0006] In use, the operator only needs to place the headrest tube in the storage bin of the frame. By setting two levels of steps, several first lifting plates can gradually lift the headrest tube in the storage bin to the first step surface for temporary storage, and several second lifting plates can then continuously lift the headrest tube on the first step surface to the second step surface, completing the automatic feeding of the headrest tube. At the same time, while ensuring that the storage bin has a large capacity, the feeding interval time is reduced, which facilitates subsequent processes such as weld inspection of the headrest tube and improves work efficiency. In addition, the baffle structure can prevent the headrest tube on the second step surface from detaching from the second step surface on its own. The bottom wall of the storage bin is inclined from back to front and from top to bottom, so that the headrest tube can move on its own above several first lifting plates, making it convenient for the first lifting plates to lift it to the first step surface for temporary storage. Similarly, the first step surface is inclined from back to front and from top to bottom, so that the headrest tube can move on its own above several second lifting plates, making it convenient for the second lifting plates to lift it to the second step surface. The second step surface is inclined from back to front and from top to bottom, which is convenient for operators to pick up or for robotic arms to grip.

[0007] In the aforementioned automatic feeding mechanism for headrest tubes, the top of the first lifting plate has a first notch, the edge of which abuts against the lower surface of the first step to form a limit. The top surface of the first lifting plate extends out of a first clearance hole and is inclined downwards from back to front. The top of the second lifting plate has a second notch, the edge of which abuts against the lower surface of the second step to form a limit. The top surface of the second lifting plate extends out of a second clearance hole and is inclined downwards from back to front. This allows the first lifting plate to form a V-shape with the vertical step surface of the first step, making it less likely for the headrest tube on the first lifting plate to detach. Similarly, the second lifting plate can form a V-shape with the vertical step surface of the second step, making it less likely for the headrest tube on the second lifting plate to detach. Furthermore, the edges of the first and second notches abut against the first and second step surfaces, making the movement of the first and second lifting plates more precise.

[0008] In the aforementioned automatic feeding mechanism for headrest tubes, at least two guide rods are arranged side-by-side above the storage bin on the frame. Vertically positioned baffles are fitted onto the guide rods, abutting against a first step, a second step, and the wall of the storage bin. The baffles can move and lock along the guide rods. By moving the baffles along the guide rods, the storage bin can accommodate headrest tubes of different lengths, thereby improving the versatility of this automatic feeding mechanism.

[0009] In the aforementioned automatic feeding mechanism for headrest tubes, the baffle plate is sleeved on the guide rod via bearings. Both ends of the bearings protrude from the baffle plate. The guide rod is fitted with clamping rings, with at least two clamping rings located on either side of the baffle plate and capable of limiting the movement of the bearings located on the same guide rod. This allows for smoother movement of the baffle plate, thus simplifying its locking operation.

[0010] In the aforementioned automatic feeding mechanism for headrest tubes, the distance between the first stepped surface and the bottom wall of the storage bin is greater than the distance between the first stepped surface and the second stepped surface. This maximizes the storage bin capacity while ensuring the cycle time of the headrest tube moving from the storage bin to the first stepped surface matches the cycle time of the headrest tube moving from the first stepped surface to the second stepped surface, thus avoiding prolonged waiting times for operators and robotic arms.

[0011] In the aforementioned automatic feeding mechanism for headrest tubes, the blocking structure comprises an upwardly bent extension section along the edge of the second stepped surface and an L-shaped blocking block fixed to the second stepped surface. The structure is simple and effectively blocks the headrest tube, preventing it from detaching from the second stepped surface.

[0012] In the aforementioned automatic feeding mechanism for headrest tubes, a vertically arranged mounting plate is fixedly connected to the frame below the storage bin. A first lifting frame, which can be raised and lowered, is slidably connected to one side of the mounting plate, and a second lifting frame, which can also be raised and lowered, is slidably connected to the other side of the mounting plate. Several first lifting plates are vertically and side-by-side fixed to the first lifting frame, and several second lifting plates are vertically and side-by-side fixed to the second lifting frame. This allows for better synchronous raising and lowering of the first and second lifting plates.

[0013] In the aforementioned automatic feeding mechanism for headrest tubes, the length of the first lifting plate is greater than or equal to the distance between the first step surface and the bottom wall of the storage bin, and the length of the second lifting plate is greater than or equal to the distance between the first step surface and the second step surface. The fact that the length of the first lifting plate is greater than or equal to the distance between the first step surface and the bottom wall of the storage bin prevents several first lifting plates from being blocked by the headrest tube during descent. Similarly, the fact that the length of the second lifting plate is greater than or equal to the distance between the first step surface and the second step surface prevents several second lifting plates from being blocked by the headrest tube during descent.

[0014] In the aforementioned automatic feeding mechanism for headrest tubes, a first cylinder, a first guide rail, a second cylinder, and a second guide rail are respectively fixedly connected to the mounting plate. Both the first and second guide rails are vertically arranged. The output shaft of the first cylinder is vertically upward and connected to a first lifting frame. A first slider, slidably connected to the first guide rail, is fixedly connected to the first lifting frame. The output shaft of the second cylinder is vertically upward and connected to a second lifting frame. A second slider, slidably connected to the second guide rail, is fixedly connected to the second lifting frame. This allows the first lifting plates to move more effectively between the bottom wall of the storage bin and the first step surface, and allows the second lifting plates to move more effectively between the first and second step surfaces.

[0015] Compared with existing technologies, the advantages of this automatic feeding mechanism for headrest tubes are: this automatic feeding mechanism can realize the automatic feeding of headrest tubes, which facilitates subsequent processes such as weld inspection of headrest tubes and improves work efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an automatic feeding mechanism for headrest tubes.

[0017] Figure 2 This is a three-dimensional structural diagram of the automatic feeding mechanism for headrest tubes after removing a portion of the frame.

[0018] Figure 3 This is one of the three-dimensional structural diagrams of the automatic feeding mechanism for headrest tubes after removing the frame and storage bin.

[0019] Figure 4 This is the second schematic diagram of the three-dimensional structure of the automatic feeding mechanism for headrest tubes after removing the frame and storage bin.

[0020] In the diagram, 1 is the frame; 2 is the storage bin; 3 is the first step; 3a is the surface of the first step; 3b is the first clearance hole; 4 is the second step; 4a is the surface of the second step; 4b is the material blocking structure; 4c is the second clearance hole; 5 is the first lifting plate; 5a is the first notch; 6 is the second lifting plate; 6a is the second notch; 7 is the guide rod; 8 is the mounting plate; 9 is the first lifting frame; 10 is the second lifting frame; 11 is the first cylinder; 12 is the first guide rail; 13 is the second cylinder; 14 is the second guide rail; 15 is the first slider; 16 is the second slider; 17 is the baffle plate; 18 is the bearing; and 19 is the clamping ring. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] An automatic feeding mechanism for headrest tubes, as described in the following figure. Figure 1-4 The system includes a frame 1 and a storage bin 2 mounted on the frame 1. The front wall of the storage bin 2 has, from bottom to top, a first step 3 with a first stepped surface 3a and a second step 4 with a second stepped surface 4a. The first stepped surface 3a, the second stepped surface 4a, and the front end of the bottom wall of the storage bin 2 slope downwards. A material-blocking structure 4b for limiting material movement is provided on the second stepped surface 4a. The first step 3 has several vertically arranged first clearance holes 3b, with their upper and lower ends located on the first stepped surface 3a and the bottom wall of the storage bin 2, respectively. The second step 4 has several vertically arranged first clearance holes 3b... The frame 1 is provided with several second clearance holes 4c, with its upper and lower ends located on the second step surface 4a and the first step surface 3a, respectively. The frame 1 is also provided with several first lifting plates 5 located directly below the first clearance holes 3b and several second lifting plates 6 located directly below the second clearance holes 4c. Several first lifting plates 5 can extend out of their corresponding first clearance holes 3b at the same time and move up and down between the bottom wall of the storage bin 2 and the first step surface 3a. Several second lifting plates 6 can extend out of their corresponding second clearance holes 4c at the same time and move up and down between the first step surface 3a and the second step surface 4a.

[0023] Reference Figure 2 , Figure 3 and Figure 4 Specifically, the top of the first lifting plate 5 has a first notch 5a, the edge of the first notch 5a can abut against the bottom of the first step surface 3a to form a limit, the top surface of the first lifting plate 5 can extend out of the first clearance hole 3b and is inclined from back to front from top to bottom, the top of the second lifting plate 6 has a second notch 6a, the edge of the second notch 6a can abut against the bottom of the second step surface 4a to form a limit, the top surface of the second lifting plate 6 can extend out of the second clearance hole 4c and is inclined from back to front from top to bottom; the material blocking structure 4b is an extension section that bends upward from the edge of the second step surface 4a and a material blocking block that is fixed to the second step surface 4a and is L-shaped.

[0024] In this embodiment, the distance between the first step surface 3a and the bottom wall of the storage bin 2 is preferably greater than the distance between the first step surface 3a and the second step surface 4a.

[0025] Reference Figure 1Furthermore, the frame 1 is provided with at least two guide rods 7 arranged side by side directly above the storage bin 2. A vertically arranged baffle plate 17 is fitted on the guide rod 7. The baffle plate 17 abuts against the first step 3, the second step 4 and the wall of the storage bin 2. The baffle plate 17 can move and lock along the guide rod 7. The baffle plate 17 is fitted on the guide rod 7 through a bearing 18. The two ends of the bearing 18 protrude from the baffle plate 17. The guide rod 7 is fitted with a clamping ring 19. At least two clamping rings 19 are located on both sides of the baffle plate 17 and can respectively limit the movement of the bearing 18 located on the same guide rod 7. When it is necessary to move the baffle plate 17, first loosen the clamp ring 19 located in front of the moving direction. The baffle plate 17 can drive the clamp ring 19 to move synchronously through the bearing 18. After moving into place, lock the clamp ring 19 on the guide rod 7 so that the clamp ring 19 can limit the further movement of the baffle plate 17. Then, the operator loosens the other clamp ring 19 and moves the clamp ring 19 along the guide rod 7 to the position abutting against the bearing 18 and locks it, so that the two clamp rings 19 on both sides of the baffle plate 17 lock the baffle plate 17 together.

[0026] Reference Figure 2 , Figure 3 and Figure 4 More specifically, the frame 1 is fixedly connected to a vertically arranged mounting plate 8 below the storage bin 2. A first lifting frame 9, which can be raised and lowered, is slidably connected to one side of the mounting plate 8, and a second lifting frame 10, which can be raised and lowered, is slidably connected to the other side of the mounting plate 8. A plurality of first lifting plates 5 are vertically and side-by-side fixedly connected to the first lifting frame 9, and a plurality of second lifting plates 6 are vertically and side-by-side fixedly connected to the second lifting frame 10. The length of the first lifting plate 5 is greater than or equal to the distance between the first step surface 3a and the bottom wall of the storage bin 2, and the length of the second lifting plate 6 is greater than or equal to the distance between the first step surface 3a and the second step surface 4a.

[0027] Reference Figure 2 , Figure 3 and Figure 4 More specifically, the mounting plate 8 is further fixedly connected to a first cylinder 11, a first guide rail 12, a second cylinder 13, and a second guide rail 14. Both the first guide rail 12 and the second guide rail 14 are vertically oriented. The output shaft of the first cylinder 11 is vertically upward and connected to a first lifting frame 9. A first slider 15, slidably connected to the first guide rail 12, is fixedly connected to the first lifting frame 9. The output shaft of the second cylinder 13 is vertically upward and connected to a second lifting frame 10. A second slider 16, slidably connected to the second guide rail 14, is fixedly connected to the second lifting frame 10. In this embodiment, the first guide rail 12, the second guide rail 14, the first slider 15, and the second slider 16 are preferably as follows: Figure 3 and Figure 4 Two guide rails are provided for each of the following: preferably, the length of the first guide rail 12 is consistent with the distance between the first step surface 3a and the bottom wall of the storage bin 2, and the length of the second guide rail 14 is consistent with the distance between the first step surface 3a and the second step surface 4a.

[0028] The following describes the working principle of the automatic feeding mechanism used for headrest tubes:

[0029] The operator first puts the headrest tube to be tested into the storage bin 2 of the frame 1. Because the bottom wall of the storage bin 2 is inclined from back to front and from top to bottom, the headrest tube in the storage bin 2 has a tendency to move closer to the first step 3.

[0030] Step 1: Next, the first cylinder 11 drives the first lifting frame 9 to rise. Several first lifting plates 5, vertically fixed to the first lifting frame 9, rise simultaneously. At the same time, these first lifting plates 5 drive the row of headrest tubes abutting the first step 3 to rise synchronously (because the top surface of the first lifting plate 5 is inclined from back to front and from top to bottom, this row of headrest tubes can move upwards along the vertical step surface of the first step 3 during the rising process), until the top surface of the several first lifting plates 5 moves to the first step surface 3a. At this point, the row of headrest tubes located above the several first lifting plates 5 are fully... The headrest tubes enter the first step surface 3a. Since the first step surface 3a is inclined from back to front and from top to bottom, some of these headrest tubes can roll forward along the first step surface 3a to abut against the second step 4. Then, the first cylinder 11 drives several first lifting plates 5 to descend and reset (since the length of the first lifting plate 5 is greater than or equal to the distance between the first step surface 3a and the bottom wall of the storage bin 2, during the descent of the several first lifting plates 5, the remaining headrest tubes in the storage bin 2 can only abut against the first lifting plate 5, so as not to obstruct the descent of the first lifting plate 5).

[0031] Step 2: Next, the second cylinder 13 drives the second lifting frame 10 to rise, and several second lifting plates 6 vertically fixed to the second lifting frame 10 rise synchronously. At the same time, several second lifting plates 6 drive the row of headrest tubes that abut against the second step 4 to rise synchronously (since the top surface of the second lifting plate 6 is inclined from back to front from top to bottom, the headrest tubes can move upward along the vertical step surface of the second step 4 during the rising process), until the uppermost headrest tube disengages from the vertical step surface of the second step 4 and enters the second step surface 4a. Since the second step surface 4a is inclined from back to front from top to bottom, the headrest tubes can roll forward along the second step surface 4a until they abut against the material blocking structure 4b. At this time, the automatic feeding of the headrest tubes is completed. Then the headrest tubes are taken away by the operator or clamped by the robot arm to enter the weld inspection process.

[0032] Step 3: Then, the second lifting plates 6 continue to rise until the uppermost headrest tube disengages from the vertical step surface of the second step 4 and enters the second step surface 4a. The above steps are repeated until the top surface of the second lifting plates 6 moves to the second step surface 4a. At this time, the entire row of headrest tubes above the second lifting plates 6 has been transferred to the second step surface 4a. Then, the second cylinder 13 drives the second lifting plates 6 to descend and reset (since the length of the second lifting plate 6 is greater than or equal to the distance between the first step surface 3a and the second step surface 4a, during the descent of the second lifting plates 6, the remaining headrest tubes on the first step surface 3a can only abut against the second lifting plates 6, thus not obstructing the descent of the second lifting plates 6).

[0033] When the top surfaces of several second lifting plates 6 descend to the first step surface 3a, the second lifting plates 6 stop descending. Since the second lifting plates 6 are removed from the first step surface 3a at this time, some of the remaining headrest tubes on the first step surface 3a will abut against the vertical step surface of the second step 4. Then, steps two and three are repeated until all the headrest tubes on the second step 4 are transferred to the second step surface 4a. Then, steps one, two and three are repeated until all the headrest tubes in the storage bin 2 are transferred to the second step surface 4a.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An automatic feeding mechanism for headrest tubes, comprising a frame (1) and a storage bin (2) disposed on the frame (1), characterized in that, The front sidewall of the storage silo (2) is provided with a first step (3) having a first stepped surface (3a) and a second step (4) having a second stepped surface (4a) from bottom to top. The first stepped surface (3a), the second stepped surface (4a) and the front end of the bottom wall of the storage silo (2) are inclined downward. A material blocking structure (4b) for material blocking and limiting is provided on the second stepped surface (4a). A plurality of first clearance holes (3b) are vertically arranged and parallel on the first step (3), with their upper and lower ends respectively located on the first stepped surface (3a) and the bottom wall of the storage silo (2). A plurality of first clearance holes (3b) are vertically arranged and parallel on the second step (4), with their upper and lower ends respectively located on the first stepped surface (3a) and the bottom wall of the storage silo (2). The frame (1) is provided with a number of first lifting plates (5) located directly below the first lifting holes (3b) and a number of second lifting plates (6) located directly below the second lifting holes (4c). The first lifting plates (5) can extend out of the corresponding first lifting holes (3b) at the same time and move up and down between the bottom wall of the storage bin (2) and the first step surface (3a). The second lifting plates (6) can extend out of the corresponding second lifting holes (4c) at the same time and move up and down between the first step surface (3a) and the second step surface (4a).

2. The automatic feeding mechanism for headrest tubes according to claim 1, characterized in that, The top of the first lifting plate (5) has a first notch (5a), the edge of the first notch (5a) can abut against the bottom of the first step surface (3a) to form a limit, the top surface of the first lifting plate (5) can extend out of the first clearance hole (3b) and is inclined from back to front in a downward direction, the top of the second lifting plate (6) has a second notch (6a), the edge of the second notch (6a) can abut against the bottom of the second step surface (4a) to form a limit, the top surface of the second lifting plate (6) can extend out of the second clearance hole (4c) and is inclined from back to front in a downward direction.

3. The automatic feeding mechanism for headrest tubes according to claim 1, characterized in that, The frame (1) is provided with at least two guide rods (7) arranged side by side above the storage bin (2). The guide rods (7) are fitted with vertically arranged baffles (17). The baffles (17) abut against the first step (3), the second step (4) and the wall of the storage bin (2). The baffles (17) can move and lock along the guide rods (7).

4. An automatic feeding mechanism for a headrest tube according to claim 3, characterized in that, The baffle plate (17) is sleeved on the guide rod (7) via a bearing (18). Both ends of the bearing (18) protrude from the baffle plate (17). The guide rod (7) is sleeved with clamping rings (19). At least two clamping rings (19) are located on both sides of the baffle plate (17) and can respectively limit the movement of the bearing (18) located on the same guide rod (7).

5. An automatic feeding mechanism for a headrest tube according to claim 1, characterized in that, The distance between the first step surface (3a) and the bottom wall of the storage bin (2) is greater than the distance between the first step surface (3a) and the second step surface (4a).

6. An automatic feeding mechanism for a headrest tube according to claim 1, characterized in that, The material-blocking structure (4b) includes an extension section that bends upward from the edge of the second step surface (4a) and an L-shaped material-blocking block fixed to the second step surface (4a).

7. An automatic feeding mechanism for a headrest tube according to any one of claims 1-6, characterized in that, The frame (1) is fixedly connected to a vertically arranged mounting plate (8) below the storage bin (2). A first lifting frame (9) that can be raised and lowered is slidably connected to one side of the mounting plate (8), and a second lifting frame (10) that can be raised and lowered is slidably connected to the other side of the mounting plate (8). Several first lifting plates (5) are vertically and side by side fixedly connected to the first lifting frame (9), and several second lifting plates (6) are vertically and side by side fixedly connected to the second lifting frame (10).

8. An automatic feeding mechanism for a headrest tube according to claim 7, characterized in that, The length of the first lifting plate (5) is greater than or equal to the distance between the first step surface (3a) and the bottom wall of the storage bin (2), and the length of the second lifting plate (6) is greater than or equal to the distance between the first step surface (3a) and the second step surface (4a).

9. An automatic feeding mechanism for a headrest tube according to claim 7, characterized in that, The mounting plate (8) is also fixedly connected to a first cylinder (11), a first guide rail (12), a second cylinder (13), and a second guide rail (14). The first guide rail (12) and the second guide rail (14) are both vertically arranged. The output shaft of the first cylinder (11) is vertically upward and connected to the first lifting frame (9). The first lifting frame (9) is fixedly connected to a first slider (15) that is slidably connected to the first guide rail (12). The output shaft of the second cylinder (13) is vertically upward and connected to the second lifting frame (10). The second lifting frame (10) is fixedly connected to a second slider (16) that is slidably connected to the second guide rail (14).

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