A fully automatic production line for single-piece flow of automobile seat belt mandrels

Abstract

The present invention relates to the technical field of automobile seat belt mandrel production, and in particular to a single-piece flow fully automatic production line for automobile seat belt mandrels, comprising a workbench, a chain conveyor line arranged on the workbench, and a plurality of accommodating boxes fixed on the chain conveyor line, wherein the mandrel is arranged inside the accommodating box, and the chain conveyor line conveys the mandrel to each processing station under the control of a control module, and the fully automatic production line further comprises a positioning mechanism; the positioning mechanism comprises a fixed segmented telescopic component and a first positioning head and a second positioning head driven by the segmented telescopic component and having a predetermined spacing in the transverse direction. The present invention can first use the first positioning head to position the accommodating box, and the positioning of the mandrel can be carried out on the basis of the completion of the positioning of the accommodating box, thereby ensuring that the accommodating box and the mandrel can be accurately positioned, reducing processing errors, and improving the production quality of the mandrel.

Description

Technical Field

[0001] The invention relates to the technical field of automobile safety belt core shaft production, in particular to a single-piece flow fully automatic production line for automobile safety belt core shafts. Background Art

[0002] A car seat belt is a vehicle safety device designed to protect vehicle occupants from harmful movements that could occur during a collision or sudden stop.

[0003] The core shaft is an important component of the car seat belt. Its main function is to wind the webbing and transmit torque. Therefore, the quality of the core shaft determines whether the car seat belt can work properly.

[0004] Currently, the production of mandrels is completed using an automated production line. This line uses a chain conveyor line to transport the mandrel-containing box. During the conveying process, due to long-term operation and friction, the chain surface will wear and fatigue. These surface defects will cause the chain to stretch, which in turn prevents the chain conveyor line from accurately transporting the mandrel to each workstation, resulting in large processing errors and reduced mandrel quality. Furthermore, the position of the mandrel inside the box may not meet production standards, which will also increase processing errors and further reduce mandrel quality. Summary of the Invention

[0005] The object of the present invention is to provide a single-piece flow fully automatic production line for automobile safety belt core shafts to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A fully automatic single-piece flow production line for automobile seat belt mandrels, comprising a workbench, a chain conveyor line disposed on the workbench, and a plurality of accommodating boxes fixed to the chain conveyor line. Mandrels are disposed within the accommodating boxes. The chain conveyor line conveys the mandrels to various processing stations under the control of a control module. The fully automatic production line also includes a positioning mechanism.

[0008] The positioning mechanism includes a fixed segmented telescopic component and a first positioning head and a second positioning head driven by the segmented telescopic component and having a predetermined distance in the transverse direction, wherein the height of the bottom end of the first positioning head is lower than the height of the bottom end of the second positioning head;

[0009] The control module controls the segmented telescopic component to switch between the retracted position and the first extended position and between the first extended position and the second extended position;

[0010] During the process of extending the segmented telescopic component from the retracted position to the first extended position, the first positioning head is inserted between two adjacent accommodating boxes from top to bottom, and detects the position of the accommodating box directly below the second positioning head;

[0011] During the process of the segmented telescopic component extending from the first extended position to the second extended position, the second positioning head adjusts the position of the core shaft.

[0012] Preferably, the first positioning head includes a first positioning plate and a spring sheet and a pressure sensor fixedly connected to the bottom of the first positioning plate;

[0013] The spring piece is arranged at the bottom of the side of the first positioning plate facing the second positioning head, and the spring piece is electrically connected to the control module. The distance between the spring piece and the first positioning plate gradually increases from the bottom to the top of the first positioning plate.

[0014] The spring sheet can be moved toward the first positioning plate under the pressure of the accommodating box to press the pressure sensor.

[0015] Preferably, the second positioning head includes a second positioning plate and a pair of sliders;

[0016] Both end surfaces of the second positioning plate are symmetrically arranged inclined surfaces;

[0017] A pair of sliders are slidably connected to the two inclined surfaces respectively;

[0018] During the process of the segmented telescopic component extending from the first extending position to the second extending position, a pair of the sliders are inserted from the middle of the strip groove on the outer periphery of the core shaft and extended toward both ends.

[0019] Preferably, the positioning mechanism further includes a connecting portion;

[0020] The first positioning plate is vertically slidably connected to the output rod of the segmented telescopic component through the connecting portion;

[0021] The second positioning plate is fixedly connected to the output rod via the connecting portion;

[0022] The first positioning head further includes a limiting rod fixedly connected to the first positioning plate. When the segmented telescopic component is in the first extended position, the two limiting rods are respectively pressed against the left plate and the right plate of the accommodating box.

[0023] Preferably, the connecting portion includes a spline rod coaxially fixed to the bottom end of the output rod, a spline sleeve slidably sleeved on the outside of the spline rod, a spring sleeved on the outside of the spline rod, and a ring plate fixedly sleeved on the top end of the spline rod, with both ends of the spring respectively abutting against the spline sleeve and the ring plate;

[0024] The first positioning plate is fixedly connected to the spline sleeve;

[0025] The second positioning plate is fixed to the bottom end of the spline rod.

[0026] Preferably, the segmented telescopic component is fixedly mounted on the workbench via a bracket.

[0027] Preferably, the segmented telescopic component includes a vertically arranged electric push rod.

[0028] Preferably, the bottom end of the slider is rotatably connected to a second roller, and the axial direction of the second roller is perpendicular to the length direction of the strip groove.

[0029] Preferably, a plurality of first rollers arranged side by side are rotatably mounted on the bottom of the limiting rod, and the axial direction of the first rollers is perpendicular to the conveying direction of the chain conveyor line.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The present invention provides a segmented telescopic component, which cooperates with the first positioning head and the second positioning head to realize the telescopic movement of the first positioning head and the second positioning head in stages, so that the first positioning head can be used to position the accommodating box first, and then the predetermined distance between the first positioning head and the second positioning head is set, so that the positioning of the core shaft can be carried out on the basis of the completion of the positioning of the accommodating box, ensuring that the accommodating box and the core shaft can be accurately positioned, reducing processing errors, and improving the production quality of the core shaft.

[0032] 2. The present invention provides a second positioning plate, an inclined surface and a pair of sliders. By moving the output rod downward, the pair of sliders can be first inserted into the middle of the strip groove, and then the inclined surface is used to drive the pair of sliders to gradually separate, so that the pair of sliders are expanded from the middle of the strip groove to both ends, thereby completing the positioning of the core shaft, allowing the core shaft to be straightened and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 Schematic diagram of the top view of the accommodating box and the core shaft of the present invention;

[0035] Figure 3It is a schematic diagram of the three-dimensional structure of the accommodating box and the core shaft of the present invention;

[0036] Figure 4 Schematic diagram of the three-dimensional structure of the positioning mechanism of the present invention;

[0037] Figure 5 It is a left side structural schematic diagram of the positioning mechanism of the present invention;

[0038] Figure 6 For the present invention Figure 5 Schematic diagram of the local structure in;

[0039] Figure 7 For the present invention Figure 4 Schematic diagram of the local structure in;

[0040] Figure 8 Schematic diagram of the rear structure of the second positioning plate of the present invention;

[0041] Figure 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the slider of the present invention.

[0042] In the picture:

[0043] 1. Workbench;

[0044] 2. Chain conveyor line;

[0045] 3. Container box; 31. Front side panel; 32. Rear side panel; 33. Left side panel; 34. Right side panel;

[0046] 4. Mandrel; 41. Strip groove;

[0047] 5. Positioning mechanism; 51. Bracket; 52. Segmented telescopic component; 521. Output rod; 53. First positioning head; 531. First positioning plate; 532. Limit rod; 533. Spring sheet; 534. Pressure sensor; 535. First roller; 54. Second positioning head; 541. Second positioning plate; 5411. Inclined surface; 542. Slider; 543. Second roller; 55. Connecting part; 551. Spline rod; 552. Spline sleeve; 553. Spring; 554. Ring plate. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0049] See also Figures 1-9 , the present invention provides a technical solution:

[0050] A fully automatic single-piece flow production line for automobile seat belt mandrels includes a workbench 1, a chain conveyor line 2 arranged on the workbench 1, and a plurality of accommodating boxes 3 fixed on the chain conveyor line 2. The mandrels 4 are arranged inside the accommodating boxes 3. The chain conveyor line 2 conveys the mandrels 4 to each processing station under the control of a control module, so that the corresponding processing operations on the mandrels 4 are completed at each processing station, and finally the required mandrel products are formed.

[0051] Due to the long-term operation and friction of the chain conveyor line 2, the chain surface will produce wear and fatigue. These surface defects will cause the chain to stretch, which in turn makes it impossible for the chain conveyor line to accurately convey the mandrel to each workstation, resulting in large processing errors and reduced mandrel quality. Therefore, the fully automatic production line in this embodiment also includes a positioning mechanism 5 to calibrate the position of the accommodating box 3 and the position of the mandrel 4, thereby improving the production quality of the mandrel 4.

[0052] Specifically, such as Figures 1-9 As shown, the positioning mechanism 5 includes a fixed segmented telescopic component 52 and a first positioning head 53 and a second positioning head 54 driven by the segmented telescopic component 52 and having a predetermined spacing in the lateral direction, and the height of the bottom end of the first positioning head 53 is lower than the height of the bottom end of the second positioning head 54; the predetermined spacing between the first positioning head 53 and the second positioning head 54 is set, when the first positioning head 53 completes the positioning of the accommodating box 3, the second positioning head 54 can be located just above the strip groove 41 on the outer periphery of the core shaft 4, providing a position basis for the positioning of the core shaft 4.

[0053] The control module controls the conversion of the segmented telescopic component 52 between the retracted position and the first extended position and between the first extended position and the second extended position; the segmented telescopic component 52 has the function of extending or retracting in stages. In this embodiment, the segmented telescopic component 52 includes a vertically arranged electric push rod. In actual use, the control module can be used to control the extension and retraction of the electric push rod. For example, the output rod 521 of the electric push rod is controlled to first extend to the first extended position, and then extend to the second extended position. This is divided into two stages of extension. The positioning of the accommodating box 3 is completed in the first extended position, and the positioning of the core shaft 4 is completed in the second extended position. The two positioning stages only require the use of one electric push rod to complete. At the same time, the positioning of the core shaft 4 must be achieved after the positioning of the accommodating box 3 is completed, that is, the positioning of the accommodating box 3 provides a positioning environment for the positioning of the core shaft 4, thereby improving the production quality of the core shaft 4.

[0054] In the process of the segmented telescopic component 52 extending from the retracted position to the first extended position, the first positioning head 53 is inserted between the two adjacent accommodating boxes 3 from top to bottom, and detects the position of the accommodating box 3 directly below the second positioning head 54; in this embodiment, the first positioning head 53 is arranged in front of the second positioning head 54, and the accommodating box 3 in this embodiment includes a front side plate 31 and a rear side plate 32, which are defined according to the conveying direction of the accommodating box 3, that is, the forward direction of the accommodating box 3 under the conveyance of the chain conveyor line 2 is the front of the accommodating box 3. During specific positioning, when the first positioning head 53 is inserted between the two adjacent accommodating boxes 3 from top to bottom, if the first positioning head 53 is inserted between the two adjacent accommodating boxes 3, The head 53 is in contact with the front side surface of the front side plate 31 of the accommodating box 3, indicating that the position of the accommodating box 3 does not need to be adjusted at this time, and the core shaft 4 can be positioned; if the first positioning head 53 is not in contact with the front side surface of the front side plate 31 of the accommodating box 3, the first positioning head 53 will feed back a signal of inaccurate position of the accommodating box 3 to the control module, and the control module processes the signal fed back by the first positioning head 53, and then controls the chain conveyor line 2 to start, and conveys the accommodating box 3 located behind the first positioning head 53 to a state of contact with the first positioning head 53, and then the control module closes the chain conveyor line 2, thereby completing the positioning of the accommodating box 3, and then the core shaft 4 can be positioned.

[0055] During the process of the segmented telescopic component 52 extending from the first extended position to the second extended position, the second positioning head 54 adjusts the position of the core shaft 4. Specifically, the second positioning head 54 is inserted into the strip groove 41 on the outer periphery of the core shaft 4 to complete the positioning of the core shaft 4.

[0056] By setting up the segmented telescopic component 52, in conjunction with the first positioning head 53 and the second positioning head 54, the telescopic movement of the first positioning head 53 and the second positioning head 54 can be achieved in stages, so that the first positioning head 53 can be used to position the accommodating box 3 first, and then combined with the setting of the predetermined distance between the first positioning head 53 and the second positioning head 54, the positioning of the core shaft 4 can be carried out on the basis of the completion of the positioning of the accommodating box 3, ensuring that the accommodating box 3 and the core shaft 4 can be accurately positioned, reducing processing errors, and improving the production quality of the core shaft 4.

[0057] like Figures 1-9 As shown, the first positioning head 53 includes a first positioning plate 531 and a spring piece 533 and a pressure sensor 534 fixedly connected to the bottom of the first positioning plate 531. The first positioning plate 531 can be made of a steel plate; the spring piece 533 is arranged at the bottom of the side of the first positioning plate 531 facing the second positioning head 54, and the spring piece 533 is electrically connected to the control module. Along the bottom to the top of the first positioning plate 531, the distance between the spring piece 533 and the first positioning plate 531 gradually increases (as shown in FIG. Figure 6 and Figure 7The spring piece 533 can be moved toward the first positioning plate 531 to squeeze the pressure sensor 534 under the pressure of the accommodating box 3.

[0058] When the first positioning plate 531 is in the state of the first extended position, the spring piece 533 will be squeezed by the front side of the front side plate 31 and gradually approach the first positioning plate 531. When the segmented telescopic component 52 is in the state of the first extended position, the spring piece 533 will contact the pressure sensor 534 under the pressure of the front side plate 31, so that the pressure sensor 534 generates an electrical signal. The pressure sensor 534 feeds back the electrical signal to the control module. After receiving the electrical signal, the control module indicates that the position of the accommodating box 3 is accurate at this time and no position adjustment is required. Therefore, the control module sends a command to the segmented telescopic component 52, so that the segmented telescopic component 52 extends from the first extended position to the second extended position again, completing the positioning of the core shaft 4 (the specific positioning process and principle are described below); and when the accommodating box 3 is in the state of the first extended position When the position of the box 3 is inaccurate, for example, the distance between the front side surface of the front side plate 31 and the first positioning plate 531 is large, the front side plate 31 cannot squeeze the spring sheet 533, or the front side plate 31 squeezes the spring sheet 533 but cannot make the spring sheet 533 contact with the pressure sensor 534. At this time, the control module will be unable to receive the electrical signal from the pressure sensor 534. Therefore, the control module will first send an instruction to the chain conveyor line 2 to drive the accommodating box 3 forward to squeeze the spring sheet 533 so that the spring sheet 533 contacts the pressure sensor 534. Then the pressure sensor 534 will feed back the electrical signal generated by itself to the control module. After the control module receives the electrical signal, it indicates that the position of the accommodating box 3 has been accurately adjusted. Then the control module sends an instruction to the segmented telescopic component 52, so that the segmented telescopic component 52 extends from the first extended position to the second extended position to complete the positioning of the core shaft 4 (the specific positioning process and principle are described below). In this embodiment, the control module can adopt a PLC controller, and its model can be the FX3U series among Mitsubishi PLC programmable controllers. This series of controllers adopts a type of programmable memory for internally storing programs, executing user-oriented instructions such as logical operations, sequential control, timing, counting and arithmetic operations, and controlling various types of machinery or production processes through digital or analog input / output; the model of the pressure sensor 534 can be Tedia's 220-20T. The working principle of this model of pressure sensor 132 is to use a strain gauge as a sensitive element to convert force or pressure into an electrical signal.

[0059] like Figures 1-9As shown, the second positioning head 54 includes a second positioning plate 541 and a pair of sliders 542; the two end surfaces of the second positioning plate 541 are symmetrically arranged inclined surfaces 5411; the pair of sliders 542 are respectively slidably connected to the two inclined surfaces 5411; in the process of the segmented telescopic component 52 extending from the first extended position to the second extended position, the pair of sliders 542 are inserted from the middle of the strip groove 41 on the outer periphery of the core shaft 4 and expanded toward both ends.

[0060] The working principle of the second positioning head 54 is as follows: in the process of the segmented telescopic component 52 extending from the first extended position to the second extended position, a pair of sliders 542 will first be inserted into the middle of the strip groove 41, and then because the second positioning plate 541 will move downward under the drive of the segmented telescopic component 52, since the bottom end of the slider 542 contacts the bottom surface of the strip groove 41, that is, the slider 542 will not continue to move downward, therefore, the inclined surface 5411 will drive the pair of sliders 542 to gradually separate, so that the pair of sliders 542 can be expanded from the middle of the strip groove 41 to both ends, thereby completing the positioning of the core shaft 4 (for example, one end of the core shaft 4 is close to the front side plate 31, and the other end is close to the rear side plate 32. At this time, the core shaft 4 is in an inclined state when viewed from above. If its position is not adjusted and positioned, it will cause the problem of poor production quality of the core shaft 4).

[0061] By setting up the second positioning plate 541, the inclined surface 5411 and the pair of sliders 542, the pair of sliders 542 can be inserted into the middle of the strip groove 41 by moving the output rod 521 downward, and then the inclined surface 5411 can be used to drive the pair of sliders 542 to gradually separate, so that the pair of sliders 542 can be expanded from the middle of the strip groove 41 to both ends, thereby completing the positioning of the core shaft 4, so that the core shaft 4 can be straightened and the product quality can be improved.

[0062] like Figures 1-9 As shown, the positioning mechanism 5 of this embodiment also includes a connecting portion 55; the first positioning plate 531 is vertically slidably connected to the output rod 521 of the segmented telescopic component 52 through the connecting portion 55; the second positioning plate 541 is fixedly connected to the output rod 521 through the connecting portion 55; the first positioning head 53 also includes a limiting rod 532 fixedly connected to the first positioning plate 531. When the segmented telescopic component 52 is in the first extended position, the two limiting rods 532 are respectively pressed against the left side plate 33 and the right side plate 34 of the accommodating box 3.

[0063] By setting up the connecting part 55 and utilizing the limiting rod 532 to cooperate with the left plate 33 and the right plate 34 to realize the limiting effect, the position of the first positioning head 53 can remain unchanged during the process of the segmented telescopic component 52 extending from the first extended position to the second extended position, thereby preventing the bottom end of the first positioning plate 531 from squeezing the chain conveyor line 2, thereby improving the safety of the chain conveyor line 2.

[0064] Further, such as Figures 1-9 As shown, the connecting portion 55 includes a spline rod 551 coaxially fixed to the bottom end of the output rod 521, a spline sleeve 552 slidably sleeved on the outside of the spline rod 551, a spring 553 sleeved on the outside of the spline rod 551, and a ring plate 554 fixedly sleeved on the top of the spline rod 551, the two ends of the spring 553 respectively abut against the spline sleeve 552 and the ring plate 554; the first positioning plate 531 is fixedly connected to the spline sleeve 552; the second positioning plate 541 is fixed to the bottom end of the spline rod 551.

[0065] like Figure 1 and Figure 4 As shown, the segmented telescopic component 52 is fixedly mounted on the workbench 1 via a bracket 51. The bracket 51 can be made of steel, and the bracket 51 and the workbench 1 can be fixed by bolts.

[0066] like Figure 8 and Figure 9 As shown, the bottom end of the slider 542 is rotatably connected to the second roller 543, and the axial direction of the second roller 543 is perpendicular to the length direction of the strip groove 41, so as to reduce the friction between the bottom end of the slider 542 and the inner bottom surface of the strip groove 41.

[0067] like Figure 6 and Figure 7 As shown, a plurality of first rollers 535 arranged side by side are rotatably installed at the bottom of the limit rod 532. The axial direction of the first roller 535 is perpendicular to the conveying direction of the chain conveyor line 2. The first roller 535 can reduce the friction between the limit rod 532 and the left plate 33 and the right plate 34, thereby facilitating the adjustment of the position of the accommodating box 3.

[0068] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic single-piece flow production line for automobile seat belt mandrels, comprising a workbench, a chain conveyor line arranged on the workbench, and a plurality of accommodating boxes fixed to the chain conveyor line, wherein the mandrels are arranged inside the accommodating boxes, and the chain conveyor line conveys the mandrels to various processing stations under the control of a control module, characterized in that: The fully automatic production line also includes a positioning mechanism; The positioning mechanism includes a fixed segmented telescopic component and a first positioning head and a second positioning head driven by the segmented telescopic component and having a predetermined distance in the transverse direction, wherein the height of the bottom end of the first positioning head is lower than the height of the bottom end of the second positioning head; The control module controls the segmented telescopic component to switch between the retracted position and the first extended position, and between the first extended position and the second extended position; During the process of extending the segmented telescopic component from the retracted position to the first extended position, the first positioning head is inserted between two adjacent accommodating boxes from top to bottom, and detects the position of the accommodating box directly below the second positioning head; During the process of the segmented telescopic component extending from the first extended position to the second extended position, the second positioning head adjusts the position of the core shaft.

2. The one-piece flow fully automatic production line for automobile safety belt mandrels according to claim 1 is characterized in that: The first positioning head includes a first positioning plate and a spring sheet and a pressure sensor fixedly connected to the bottom of the first positioning plate; The spring piece is arranged at the bottom of the side of the first positioning plate facing the second positioning head, and the spring piece is electrically connected to the control module. The distance between the spring piece and the first positioning plate gradually increases from the bottom to the top of the first positioning plate. The spring sheet can be moved toward the first positioning plate under the pressure of the accommodating box to press the pressure sensor.

3. The one-piece flow fully automatic production line for automobile safety belt mandrels according to claim 2, characterized in that: The second positioning head includes a second positioning plate and a pair of sliders; Both end surfaces of the second positioning plate are symmetrically arranged inclined surfaces; A pair of sliders are slidably connected to the two inclined surfaces respectively; During the process of the segmented telescopic component extending from the first extending position to the second extending position, a pair of the sliders are inserted from the middle of the strip groove on the outer periphery of the core shaft and extended toward both ends.

4. The one-piece flow fully automatic production line for automobile safety belt mandrels according to claim 3 is characterized in that: The positioning mechanism further includes a connecting portion; The first positioning plate is vertically slidably connected to the output rod of the segmented telescopic component through the connecting portion; The second positioning plate is fixedly connected to the output rod via the connecting portion; The first positioning head further includes a limiting rod fixedly connected to the first positioning plate. When the segmented telescopic component is in the first extended position, the two limiting rods are respectively pressed against the left plate and the right plate of the accommodating box.

5. The one-piece flow fully automatic production line for automobile safety belt mandrels according to claim 4 is characterized in that: The connecting portion includes a spline rod coaxially fixed to the bottom end of the output rod, a spline sleeve slidably sleeved on the outside of the spline rod, a spring sleeved on the outside of the spline rod, and a ring plate fixedly sleeved on the top end of the spline rod, with both ends of the spring respectively abutting against the spline sleeve and the ring plate; The first positioning plate is fixedly connected to the spline sleeve; The second positioning plate is fixed to the bottom end of the spline rod.

6. The one-piece flow fully automatic production line for automobile safety belt mandrels according to claim 1, characterized in that: The segmented telescopic component is fixedly mounted on the workbench via a bracket.

7. The one-piece flow fully automatic production line for automobile safety belt mandrels according to claim 1, characterized in that: The segmented telescopic component includes a vertically arranged electric push rod.

8. The one-piece flow fully automatic production line for automobile safety belt mandrels according to claim 3, characterized in that: The bottom end of the slider is rotatably connected to a second roller, and the axial direction of the second roller is perpendicular to the length direction of the strip groove.

9. The one-piece flow fully automatic production line for automobile safety belt mandrels according to claim 4, characterized in that: A plurality of first rollers arranged side by side are rotatably mounted on the bottom of the limiting rod, and the axial directions of the first rollers are perpendicular to the conveying direction of the chain conveyor line.

Images