Automatic conveying production line for chair processing

Abstract

The invention relates to the technical field of chair conveying production lines, in particular to an automatic conveying production line for chair processing, which comprises a conveying track for conveying chairs and an output track for conveying chairs, a slidable mechanical arm is assembled on a slide rail of the conveying track, and a clamping jaw assembly for clamping the chairs is assembled at the lower end of the mechanical arm; according to the invention, one supporting assembly is opposite to the rear end of the cushion by virtue of the side arm rods, the other supporting assembly is opposite to the front end of the cushion by virtue of the front arm rods, the two limiting assemblies are opposite to the two sides of the cushion by virtue of the side arm rods, and the limiting plates are opposite to the surface of the cushion, so that a chair is clamped in a wrapping manner; the force bearing point of the wrapping type clamping and the discharging force of the cantilever rod are both on the surface of the packaging box, so that the clamping force bearing point of the seat and the discharging force bearing point of the seat which is accurately aligned and placed on the tray are located at the same position, it can be effectively guaranteed that the seat cushion is stably clamped, multiple times of calibration are not needed, and the production efficiency is improved. And when the chairs are in the same posture, accurate discharging and conveying can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of chair conveying production lines, and specifically proposes an automatic conveying production line for chair processing. Background Art

[0002] Car seats are devices in vehicles for passengers to sit on. Their main function is to provide support, comfort and safety. Car seats are usually composed of a frame, filling layer, cover and adjustment mechanism. The transportation of seats from the warehouse to the assembly line is usually carried out by robots. However, since the surface material of the cover is usually leather and fabric, it is easy to be damaged during handling during the production process of the assembly line, affecting the quality of the car seats.

[0003] The existing automobile seat clamping and transportation is carried out by clamping the backrest with the robot gripper. Although the surface of the seat is covered with a plastic film to prevent scratches on the seat surface, the backrest surface is made of soft leather, the contact area at both ends of the gripper is small and the clamping force is large. Therefore, the leather on the backrest surface is prone to produce relatively large clamping indentations. At this time, the backrest clamped by the gripper is the force-bearing part. However, when the seat is clamped and placed on the assembly conveyor line, the seat cushion part needs to be aligned with the positioning point on the conveyor line pallet. However, since the seat cushion part is in a free state, there may be posture deviation, and the clamping base and the discharge base are not in the same position at this time. Therefore, the robot gripper needs to be adjusted multiple times to perform accurate discharge.

[0004] Therefore, there is an urgent need for a chair processing automated conveying production line that will not produce clamping indentations on the seat surface when in a clamping state and that is more convenient for placing the seat on the assembly conveyor line. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides an automated conveying production line for chair processing, which is used to solve the problems mentioned in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an automated conveying production line for chair processing, comprising a conveying track for transporting chairs and an output track for transporting chairs, the conveying track and the output track have different heights, the slide rail of the conveying track is equipped with a slidable mechanical arm, the slide rail of the output track is equipped with a tray for positioning and placing the chair, the lower end of the mechanical arm is equipped with a clamping claw assembly for clamping the chair, the clamping claw assembly includes a packaging box located directly above the chair cushion, and a limiting plate with a large area that fits the surface of the chair cushion is equipped below the packaging box; rotatable side arm rods are equipped on both sides of the packaging box, and a rotatable cross bar is equipped at the end of the side arm rod, and a rotatable forearm rod is equipped at the front end of the packaging box, and the end of the forearm rod and the surface of the cross bar are equipped with support assemblies respectively against the front end and both sides of the rear end of the seat cushion, and the two support assemblies are against the lower end of the seat cushion to form all-round support.

[0007] The surface of the side arm rod is equipped with a limiting component for further preventing the chair from shaking, and the limiting component is against both sides of the seat cushion.

[0008] A wrap-around clamp is formed on the chair by a supporting component with the help of a side arm rod on the rear end of the seat cushion, another supporting component with the help of a forearm rod on the front end of the seat cushion, two limiting components with the help of side arm rods on both sides of the seat cushion, and a limiting plate on the surface of the seat cushion. The force point of the wrap-around clamp and the discharge force of the cantilever rod are both on the surface of the packaging box.

[0009] Preferably, the surface directly above the packaging box is equipped with a cantilever rod for being mounted on a mechanical arm, and the position of the packaging box is equipped with a driving source for driving the support assembly to rotate.

[0010] Preferably, the limiting plate is arc-shaped as a whole and fits the surface of the seat cushion. The limiting plate is made of plastic and has a certain deformation ability. The front end of the limiting plate is stuck in the gap between the chair seat cushion and the backrest.

[0011] Preferably, the two cross bars are an integrated structure, and a motor is mounted on the surface of each side arm bar, and the two motors drive the two ends of the cross bar to rotate simultaneously.

[0012] Preferably, the support assembly includes an articulated shaft, and the articulated shafts on the two support assemblies are respectively welded to the surface of the cross bar and the end position of the forearm rod, the end of the articulated shaft is rotatably equipped with an articulated seat, the surface of the articulated seat is equipped with a support plate for resting against the lower end surface of the seat cushion, and both ends of the articulated shaft are sleeved with torsion springs, and the two ends of the torsion spring are respectively assembled on the surface of the articulated shaft and the articulated seat.

[0013] Preferably, a rubber pad 1 for fitting onto the lower end surface of the seat cushion is bonded to the surface of the support plate.

[0014] Preferably, the forearm rod is hook-shaped, and the installation position of the support assembly is not the lowest point of the forearm rod.

[0015] Preferably, the distance between the two side arm bars is greater than the width of the chair.

[0016] Preferably, the limiting assembly includes a sliding rod installed through the surface of the side arm rod, the surface of the side arm rod is equipped with an electric push rod for driving the sliding rod to move along its own axis, and the end of the sliding rod is equipped with a clamping plate that fits on both sides of the seat cushion.

[0017] Preferably, a rubber pad 2 for fitting onto the lower end surface of the seat cushion is bonded to the surface of the clamping plate.

[0018] The above technical solution has the following advantages or beneficial effects: 1. The present invention forms a wrap-around clamp on the chair through a support component using a side arm rod to support the rear end of the seat cushion, another support component using a forearm rod to support the front end of the seat cushion, two limit components using side arm rods to support both sides of the seat cushion, and a limit plate to support the surface of the seat cushion, and the force point of the wrap-around clamp and the discharge force of the cantilever rod are both on the surface of the packaging box, so that the clamping force point of the seat and the discharge force point of the seat being precisely positioned on the pallet are at the same position, which can effectively ensure that the seat cushion position is firmly clamped, so the discharge of the clamping claw assembly will be more convenient, without the need for multiple calibrations, and accurate discharge and transportation can be achieved by placing the chair in the same posture. At the same time, since the position with a smaller force surface is located at the non-flexible material under the seat cushion, the force area of ​​the limit plate clamped at the sponge cover is larger, and at this time the limit plate does not need too much force to clamp, so it will not cause dents on the surface of the chair, thereby ensuring the quality of the chair surface during transportation.

[0019] 2. The present invention provides a clamping plate for the side arm rod. After the chair is clamped by the clamping claw assembly, the clamping plate on the side arm rod can be pressed against both sides of the seat cushion under the action of the electric push rod, further ensuring stability during the clamping and transportation process and ensuring the accuracy of material discharge. Since the clamping plate does not need to be clamped at this time and is only used for limiting, it does not require a large force. At the same time, a rubber pad 2 is provided on the clamping plate to avoid dents on both sides of the seat cushion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention and its features, configurations and advantages will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings, in which like reference numerals indicate like parts throughout the drawings, which are not drawn to scale, with emphasis placed on illustrating the subject matter of the present invention.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an automated conveying production line for chair processing provided by the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the side arm rod in the clamping jaw assembly clamping the chair.

[0023] Figure 3 It is a schematic diagram of the structure of the forearm rod in the clamping jaw assembly clamping the chair.

[0024] Figure 4 It is a structural diagram of the rubber pad against the bottom of the front end and the rear end of the seat.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the gripper assembly.

[0026] Figure 6 It is a structural diagram of the forearm rod.

[0027] Figure 7 It is a schematic diagram of the disassembled structure of the limiting plate and the packaging box.

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the articulated shaft and the articulated seat.

[0029] In the figure: 1. Conveyor track; 2. Output track; 3. Robotic arm; 4. Pallet; 5. Gripper assembly; 51. Packaging box; 52. Side arm rod; 53. Cross bar; 54. Forearm rod; 55. Support assembly; 551. Articulated shaft; 552. Articulated seat; 553. Torsion spring; 554. Support plate; 6. Limit plate; 7. Cantilever rod; 8. Motor; 9. Limit assembly; 91. Sliding rod; 92. Electric push rod; 93. Clamping plate; 10. Rubber pad 2; 11. Rubber pad 1. DETAILED DESCRIPTION

[0030] 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.

[0031] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1Disclosed is an automated conveying production line for chair processing, which is mainly aimed at conveying car seats from high to low, and includes a conveying track 1 and an output track 2. A slide rail is fixedly installed on the conveying track 1 by bolts, and a slider seat is slidably installed on the slide rail. A mechanical arm 3 is fixedly installed on the surface of the slider seat. The conveying track 1 is connected to the storage area of ​​the chair, and a clamping claw assembly 5 is fixedly installed on the end of the mechanical arm 3 by a flange and bolts. After the clamping claw assembly 5 clamps the chair, the chair is clamped from a high place to a low place by moving the mechanical arm 3. A tray 4 is fixedly installed on the output track 2 at the low place, and a limit rod is fixedly connected to the tray 4. The clamping claw assembly 5 needs to align the chair above the limit rod and place it.

[0033] like Figure 1-Figure 3 and Figure 7 As shown, the lower end of the mechanical arm 3 is fixed with a cantilever rod 7 by a flange and bolts. The cantilever rod 7 needs to be located directly above the center position of the chair cushion when clamping. The lower end of the cantilever rod 7 is fixedly installed with a packaging box 51. A limiting plate 6 with a large area that fits the surface of the cushion is installed below the packaging box 51. The overall shape of the limiting plate 6 is arc-shaped. The limiting plate 6 is made of plastic and has a certain elasticity. Therefore, the limiting plate 6 can fit the shape of the upper surface of the cushion and be directly inserted into the gap between the cushion and the backrest, which can provide a certain clamping and limiting ability. Moreover, due to the large force area, it can effectively avoid large dents on the surface of the cushion. A threaded groove is provided on the lower surface of the packaging box 51, and a stud is threadedly installed inside the threaded groove. The limiting plate 6 and the stud are an integrally formed structure. When assembling, the limiting plate 6 can be screwed into the threaded groove position.

[0034] The two sides of the packaging box 51 are both rotatably installed with rotating shafts, and the ends of the rotating shafts are fixedly installed with side arm rods 52. The interior of the packaging box 51 is provided with a power source (not shown in the figure) that drives the two rotating shafts to rotate simultaneously. It should be noted that there is a large distance between the side arm rods 52 and the chair to prevent the side arm rods 52 from colliding with the chair during the rotation of the rotating shaft. A cross bar 53 is rotatably installed between the two side arm rods 52, and the surface of the cross bar 53 is equipped with a support assembly 55. When the cross bar 53 rotates, the support assembly 55 rests on the surface of the chair for support. Since the support assembly 55 needs to withstand the greater gravity of the chair at this time, motors 8 are fixedly installed at the ends of the two side arm rods 52 through motor seats. The two motors 8 drive the cross bar 53 to rotate at the same time to ensure the force balance at both ends of the cross bar 53. At this time, the synchronous rotation of the two motors 8 can be driven by a program, which belongs to the existing technology and will not be described in detail in this solution.

[0035] It should be noted that after the two shafts rotate, the crossbar 53 is located at the lower side of the rear end of the seat cushion. Since this position is made of non-flexible material, it can effectively avoid dents on the surface of the chair when clamping.

[0036] The front end of the packaging box 51 is rotatably mounted with a rotatable forearm rod 54, which is located in the middle of the packaging box 51. The rotation of the forearm rod 54 is driven by a power source. The end of the forearm rod 54 is also equipped with a support assembly 55. When the forearm rod 54 is driven by the power source to rotate, the support assembly 55 at this position abuts against the front end under the seat cushion. This position is made of non-flexible material. It should be noted that the forearm rod 54 is hook-shaped, and the support assembly 55 is not located at the lowest point of the forearm rod 54 (see Figure 6 ), ensuring that during the rotation of the forearm rod 54, the support assembly 55 will not collide with the output track 2. At this time, the two support assemblies 55 and the limit plate 6 form a three-way support clamp, which can effectively ensure that the seat position is firmly clamped, so the discharge of the clamping jaw assembly 5 will be more convenient and no multiple calibrations are required. At the same time, since the position with a smaller force surface is located at the non-flexible material below the seat cushion, the force area of ​​the limit plate 6 clamped at the sponge surface cover is larger, and at this time the limit plate 6 does not need too much force to clamp, so it will not cause dents on the surface of the chair.

[0037] like Figure 4-Figure 5 and Figure 7-Figure 8 As shown, the support assembly 55 includes a hinge shaft 551. The hinge shafts 551 on the two support assemblies 55 are respectively welded to the surface of the cross bar 53 and the end position of the forearm rod 54. The surface of the hinge shaft 551 is rotatably equipped with a hinge seat 552. A circular groove is provided inside the hinge seat 552. Torsion springs 553 are movably sleeved at both ends of the hinge shaft 551. The torsion spring 553 is located inside the circular groove. One end of the torsion spring 553 is fixed inside the circular groove, and the other end of the torsion spring 553 is fixed to the surface of the hinge shaft 551. The initial state of the torsion spring 553 is that the hinge shaft 551 and the surface of the hinge seat 552 form a 90° angle. A support plate 554 is welded to the end of the hinge seat 552. A rubber pad 11 is bonded to the surface of the support plate 554. Since the rubber pad 11 has a certain elasticity, it can effectively prevent the support plate 554 from hard contact with the chair to produce scratches.

[0038] When the cross bar 53 or the forearm bar 54 rotates, it will drive the support assembly 55 to rotate. At this time, the rubber pad 11 will first contact the bottom of the seat cushion. The cross bar 53 and the forearm bar 54 continue to rotate, and the contact area between the rubber pad 11 and the bottom of the seat cushion becomes larger. The bottom of the seat cushion will also squeeze the rubber pad 11, and at this time it will drive the hinge seat 552 to rotate until the rubber pad 11 is completely in contact with the bottom of the seat cushion to support the seat cushion.

[0039] like Figure 1 、 Figure 4 and Figure 7As shown, the surface of the side arm rod 52 is installed with a limit assembly 9, and the limit assembly 9 is respectively located on both sides of the seat cushion. The limit assembly 9 includes a slide rod 91 slidably installed on the surface of the side arm rod 52, and an electric push rod 92 is fixedly installed on the surface of the side arm rod 52. The output shaft of the electric push rod 92 is fixedly connected to the end of the slide rod 91, and the end of the slide rod 91 is provided with an integrally formed clamping plate 93. In order to prevent the clamping plate 93 from scratching the surface of the seat cushion, the surface of the clamping plate 93 is also bonded with a rubber pad 2 10. The surface of the rubber pad 2 10 is attached to both sides of the seat cushion. The output shaft of the electric push rod 92 pushes the clamping plate 93 to move, and the clamping plate 93 drives the rubber pad 2 10 to clamp on both sides of the seat cushion, which can further ensure the stability of the chair during clamping and transportation, and ensure more accurate material discharge.

[0040] After the material is discharged, the side arm rod 52 and the forearm rod 54 rotate away from the chair at the same time, and the mechanical arm 3 drives the clamping claw assembly 5 away from the chair.

[0041] The present invention provides an automated conveying production line for chair processing. The movement of the robotic arm 3 drives the clamping claw assembly 5 to move, and the clamping claw assembly 5 is sleeved on the top of the chair from top to bottom. First, the limit plate 6 is attached to the surface of the chair cushion and moves straight into the gap between the cushion and the backrest. Then, the packaging box 51 drives the two side arm rods 52 to rotate at the same time, and the forearm rod 54 is rotated until the cross bar 53 is located below the rear end of the cushion and the front end of the forearm rod 54 is located below the front end of the cushion. At the same time, the motor 8 drives the cross bar 53 to rotate. At this time, the rubber pad 11 on the support assembly 55 will first contact the bottom of the cushion. During the rotation process, the contact area between the rubber pad 11 and the bottom of the cushion becomes larger, and the bottom of the cushion will also squeeze the rubber pad 11, which will drive the hinge seat 552 to rotate until the rubber pad 1 1 is fully fitted with the bottom of the seat cushion to support the seat cushion. The two support components 55 and the limit plate 6 form support clamping positions in three directions. The output shaft of the electric push rod 92 on the side arm rod 52 pushes the clamping plate 93 to move. The clamping plate 93 drives the rubber pad 2 10 to clamp on both sides of the seat cushion, which can further ensure the stability of the chair during clamping and transportation, effectively ensure the firm clamping of the seat cushion position, and more accurate material discharge. At this time, the clamping reference and the material discharge reference are in the same coordinate system, so the discharge of the clamping claw assembly 5 will be more convenient. At the same time, since the position with a smaller force surface is located at the non-flexible material under the seat cushion, the force area of ​​the limit plate 6 clamped at the sponge surface cover is larger, and at this time the limit plate 6 does not need too much force to clamp, so it will not cause dents on the surface of the chair.

[0042] In the present invention, a wrap-around clamping of the chair is formed by a support component 55 with the help of a side arm rod 52 to the rear end of the seat cushion, another support component 55 with the help of a forearm rod 54 to the front end of the seat cushion, two limit components 9 with the help of a side arm rod 52 to the two sides of the seat cushion, and a limit plate 6 to the surface of the seat cushion, and the force point of the wrap-around clamping and the discharge force of the cantilever rod 7 are both on the surface of the packaging box 51, so that the clamping force point of the seat and the discharge force point of the seat when it is precisely positioned on the pallet 4 are in the same position, without the need for multiple calibrations, and accurate discharge and transportation can be achieved by placing the chair in the same posture; at the same time, all contact surfaces with the surface of the chair of the present invention will not produce dents, thereby ensuring the quality of the chair surface during transportation.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. An automated conveyor production line for chair processing, comprising a conveyor track for transporting chairs and an output track for transporting chairs, the conveyor track and the output track being at different heights, a slide rail of the conveyor track being equipped with a slidable robotic arm, and a slide rail of the output track being equipped with a tray for positioning and placing chairs, characterized in that: The lower end of the robotic arm is equipped with a clamping claw assembly for clamping the chair, the clamping claw assembly includes a packaging box located just above the chair cushion, and a limiting plate with a large area attached to the surface of the chair cushion is equipped below the packaging box; The packaging box is equipped with rotatable side arm rods on both sides, and the ends of the side arm rods are equipped with rotatable cross rods. The front end of the packaging box is equipped with a rotatable forearm rod. The ends of the forearm rod and the surface of the cross rod are equipped with support components that respectively abut against the bottom of the front end and both sides of the rear end of the seat cushion. The two support components abut against the lower end of the seat cushion to form an all-round support. The surface of the side arm rod is equipped with a limit assembly, and the limit assembly is against both sides of the seat cushion; A wrap-around clamp is formed on the chair by a supporting component with the help of a side arm rod on the rear end of the seat cushion, another supporting component with the help of a forearm rod on the front end of the seat cushion, two limiting components with the help of side arm rods on both sides of the seat cushion, and a limiting plate on the surface of the seat cushion. The force point of the wrap-around clamp and the discharge force of the cantilever rod are both on the surface of the packaging box.

2. The automated conveying production line for chair processing according to claim 1, characterized in that: The surface directly above the packaging box is equipped with a cantilever rod for being mounted on a mechanical arm, and the position of the packaging box is equipped with a driving source for driving the support assembly to rotate.

3. The automated conveying production line for chair processing according to claim 1, characterized in that: The limiting plate is generally arc-shaped and fits the surface of the seat cushion. The limiting plate is made of plastic and has a certain deformation ability. The front end of the limiting plate is stuck in the gap between the chair seat cushion and the backrest.

4. The automated conveying production line for chair processing according to claim 1, characterized in that: The two cross bars are an integrated structure, and a motor is mounted on the surface of each side arm bar. The two motors drive the two ends of the cross bar to rotate simultaneously.

5. The automated conveying production line for chair processing according to claim 4, characterized in that: The support assembly includes an articulated shaft, and the articulated shafts on the two support assemblies are respectively welded to the surface of the cross bar and the end position of the forearm bar. The end of the articulated shaft is rotatably equipped with an articulated seat, and the surface of the articulated seat is equipped with a support plate for resting on the lower end surface of the seat cushion. Both ends of the articulated shaft are sleeved with torsion springs, and the two ends of the torsion spring are respectively assembled on the surface of the articulated shaft and the articulated seat.

6. The automated conveying production line for chair processing according to claim 5, characterized in that: A rubber pad 1 for fitting on the lower end surface of the seat cushion is bonded to the surface of the support plate.

7. The automated conveying production line for chair processing according to claim 1, characterized in that: The forearm rod is hook-shaped, and the installation position of the support assembly is not the lowest point of the forearm rod.

8. The automated conveying production line for chair processing according to claim 1, characterized in that: The distance between the two side arm bars is greater than the width of the chair.

9. The automated conveying production line for chair processing according to claim 1, characterized in that: The limiting assembly includes a sliding rod installed through the surface of the side arm rod, the surface of the side arm rod is equipped with an electric push rod for driving the sliding rod to move along its own axis, and the end of the sliding rod is equipped with a clamping plate that fits on both sides of the seat cushion.

10. The automated conveying production line for chair processing according to claim 9, characterized in that: A rubber pad 2 for fitting on the lower end surface of the seat cushion is bonded to the surface of the clamping plate.

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