Multi-process circulation transmission assembly line

Abstract

The utility model relates to the field of assembly lines, and discloses a multi-process circulation transmission assembly line which comprises a process assembly composed of a plurality of process units and a mechanical arm connected with the process units. The working procedure unit group comprises one or more than two working procedure units which are distributed in parallel at intervals, and at least one mechanical arm which reciprocates along the arrangement direction of the working procedure units is arranged between every two working procedure units; a rotary mechanism is arranged between the working procedure units, and the rotary mechanism is used for receiving workpieces released by the mechanical arm of the previous working procedure unit, rotating to correspond to the next working procedure unit group and then allowing the mechanical arm of the next working procedure unit group to take the workpieces. Therefore, multi-angle arrangement of the assembly line is achieved, and the space utilization rate is remarkably increased.

Description

Technical Field

[0001] The utility model relates to the field of assembly lines, in particular to a multi-process flow transmission assembly line. Background Art

[0002] At present, the lathe processing procedures of the tie rod of the injection molding machine include: rough turning of the outer circle, semi-finishing turning, finishing turning, thread turning, annular groove turning, unloading groove turning, etc. The transfer, transportation and scheduling of the tie rod between multiple processes require a lot of manpower, material resources and time costs.

[0003] Therefore, the existing practice is generally to use the assembly line to replace manual work to realize the flow of workpieces between various processes. The structure of the existing assembly line is generally based on Figure 1 As shown, it includes a feeding process, a discharging process and several processing processes between the feeding process and the discharging process. In order to realize the flow of the robotic arm between these processes, all processes are generally arranged in a row in parallel and spaced apart, and a truss robotic arm that can move along the X-axis, Y-axis and Z-axis is used to realize the flow of the workpiece between each process.

[0004] There are many processing steps for the pull rod. If it can only be distributed in a straight line, it is difficult to have enough space to realize the arrangement of the assembly line. Therefore, the existing assembly line that can only perform straight-line flow has the problem of low space utilization. Utility Model Content

[0005] The utility model provides a multi-process flow transmission production line which effectively improves space utilization.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] A multi-process flow transmission assembly line includes a process assembly consisting of several process units and a robotic arm connecting each process unit. The process assembly includes at least two groups of process unit groups distributed at corners. The process unit group includes one or more process units distributed in parallel and spaced apart. At least one robotic arm that moves back and forth along the arrangement direction of the process units is arranged between each process unit. A rotating mechanism is provided between the process units for receiving the workpiece released by the robotic arm of the previous process unit and rotating it to the corresponding position of the next process unit group for the robotic arm of the next process unit group to pick up the workpiece.

[0008] By adopting the above scheme, as long as there is a corner between any process units, a rotary mechanism can be added between the two process units. The rotary mechanism can move the workpiece released by the robotic arm of the previous process unit to a position where the robotic arm of the next process unit can pick it up by rotating, thereby realizing the continuous flow of workpieces between the various process units of the entire assembly line. The number of rotary mechanisms to be set up can be determined according to the site space, thereby realizing multi-angle arrangement of the assembly line and significantly improving space utilization.

[0009] Preferably, the rotating mechanism includes a fixed ring frame, a rotating ring rotating concentrically on the fixed ring frame, and a workpiece receiving component fixed on the rotating ring and switching its position between two adjacent process unit groups as the rotating ring rotates. A driving component for driving the rotating ring to rotate is provided on the fixed ring frame.

[0010] Preferably, the workpiece receiving component includes parallel receiving rods, one end of which is fixed on the swivel and the other end is suspended outside or inside the swivel, and a first V-shaped block with an opening facing upward and used to receive shaft parts is fixed between the two parallel receiving rods at the corresponding end of the suspended receiving rod.

[0011] By adopting the above scheme, the workpiece receiving component switches its position between the unloading position of the robot arm of the previous process unit and the picking position of the robot arm of the next process unit along with the swivel. When the first V-shaped block receives a round shaft part such as a pull rod, it can prevent the pull rod from falling during rotation.

[0012] Preferably, at least one first V-shaped block is provided at intervals along the axial direction of the receiving rod.

[0013] Using the above solution, if the speed at which the robot arm of the previous process unit releases the pull rod is inconsistently greater than the speed at which the robot arm of the next process unit picks up the pull rod, setting up multiple first V-shaped blocks can be used to increase the number of pull rods that can be accommodated on the rotating ring, thereby reducing the frequency with which the robot arm of the previous process unit needs to wait.

[0014] Preferably, the driving component includes a driving wheel that rotates horizontally on the fixed ring frame and floats against the inner ring wall of the rotating ring, and a second driving motor for driving the driving wheel to rotate is fixed on the fixed ring frame.

[0015] With the above solution, the driving wheel rotates under the action of the second driving motor, and the rotating ring rotates under the friction force of the driving wheel.

[0016] Preferably, the driving wheel is fixed on a floating seat, one end of the floating seat is hinged to a fixed ring frame and the other end of the floating seat is hinged to a piston rod of a pressure cylinder, the cylinder body of the pressure cylinder is hinged to the fixed ring frame, and a movable rod is provided between the motor shaft of the second driving motor and the central axis of the driving wheel, with both ends movably connected to the two through universal joints.

[0017] With the above solution, the pressure cylinder applies force to the floating seat, thereby increasing the friction between the driving wheel and the rotating ring.

[0018] Preferably, a guide support mechanism is provided between the swivel and the fixed ring frame to ensure stable rotation of the swivel relative to the fixed ring frame. The upper end of the swivel is vertically folded outward to form a folded ring. The guide support mechanism includes a first support roller distributed circumferentially around the fixed ring frame and rotatably abutting the lower end face of the folded ring, and a second support roller distributed circumferentially around the fixed ring frame and rotatably abutting the outer ring wall of the swivel.

[0019] With the above solution, the first supporting roller can form an axial rolling support for the rotating ring, and the second supporting roller can form a radial rolling support for the rotating ring, thereby achieving stable rotation of the rotating ring relative to the lifting ring.

[0020] Preferably, the process assembly includes a feeding process unit, a discharging process unit and several processing process units located between the feeding process unit and the discharging process unit, and the rotating mechanism is provided between any adjacent process units distributed at a corner.

[0021] Preferably, the feeding process unit and the discharging process unit are chain conveyor devices with the same structure. The chain conveyor device includes two transmission chains that are distributed in parallel and move synchronously. Between the transmission chains, a second V-shaped block with an opening facing upward and used to receive the pull rod is fixed on each chain unit that constitutes the transmission chain.

[0022] With the above solution, the pull rod is placed on two opposite second V-shaped blocks, which move forward synchronously with the movement of the chain unit. The second V-shaped blocks can prevent the pull rod from rolling during the transmission process.

[0023] Preferably, two trusses are arranged parallel to the distribution direction of the process units in the process unit group, and the robotic arm includes an X-axis movable overhead crane guided and slidable on the trusses and a connecting beam with both ends fixed on the X-axis movable overhead crane, a Y-axis movable overhead crane guided and slidable on the connecting beam, a Z-axis lifting gripper assembly is arranged on the Y-axis movable overhead crane, and the Z-axis lifting gripper assembly includes a V-shaped gripper and a lifting mechanism for driving the V-shaped gripper to rise and fall.

[0024] With the above solution, in traditional factories, a truss robot arm is generally used to transfer the pull rod. The essence of its grasping function is a V-shaped gripper that is driven by a cylinder to open and close. The V-shaped gripper is lifted and lowered by the lifting mechanism, which is the Z-axis movement of the V-shaped gripper. The fixed end of the lifting mechanism is fixed to the Y-axis moving overhead crane and moves along the connecting beam, which is the Y-axis movement of the V-shaped gripper. The connecting beam is fixed on the X-axis moving overhead crane, and moves along the truss, which is the X-axis movement of the V-shaped gripper.

[0025] Due to the adoption of the above technical solution, the present invention has significant technical effects: by adding a rotary mechanism, the rotary mechanism is combined into the existing linearly distributed assembly line to form a new assembly line. This assembly line can arrange any two adjacent process units at a corner (an angle less than or equal to 90°) and connect them using a rotary mechanism. The rotary mechanism can move the workpiece released by the robotic arm of the previous process unit to a position where the robotic arm of the next process unit can pick it up by rotating, thereby realizing the continuous flow of the workpiece between the various process units of the entire assembly line. The number of rotary mechanisms to be set can be determined according to the site space, thereby realizing multi-angle arrangement of the assembly line and significantly improving space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a top view of the existing multi-process flow and transmission line;

[0027] Figure 2 This is an axonometric diagram of the multi-process flow and transmission line of this embodiment;

[0028] Figure 3 yes Figure 2 A magnified view of A;

[0029] Figure 4 yes Figure 2 An enlarged view of B;

[0030] Figure 5 is an axonometric view of the rotary mechanism of this embodiment;

[0031] Figure 6 It is a front view of the rotary mechanism of this embodiment;

[0032] Figure 7 It is a top view of the rotary mechanism of this embodiment.

[0033] The parts designated by the numbers in the above drawings are as follows: 1. Feeding process unit; 101. Chain unit; 102. Second V-shaped block; 2. Discharging process unit; 3. Processing process unit; 4. Robotic arm; 401. Truss; 402. X-axis movable overhead crane; 403. Rack; 404. Gear; 405. First drive motor; 406. Connecting beam; 407. Y-axis movable overhead crane; 408. V-shaped gripper; 409. Slide; 410. Guide rail; 411. Slider; 5. Rotating mechanism; 501. Fixed ring frame; 502. Rotating ring; 503. Folding ring; 504. Supporting rod; 505. First V-shaped block; 506. Fixed base frame; 507. Second driving motor; 508. Driving wheel; 509. Center axis; 510. Floating seat; 511. Pressure cylinder; 512. Movable rod; 513. Universal joint; 514. First supporting roller; 515. Second supporting roller; 516. Induction lever; 517. Sensor. DETAILED DESCRIPTION

[0034] The present invention is described in further detail below with reference to the accompanying drawings and embodiments.

[0035] Multi-process transfer line, refer to Figure 2 As shown, it includes a process assembly composed of several process units and a robot arm 4 connecting each process unit, the process assembly includes at least two groups of process unit groups distributed at corners, the process unit group includes one or more process units distributed in parallel and spaced apart, wherein at least one robot arm 4 that moves back and forth along the arrangement direction of the process units is arranged between each process unit, and a rotating mechanism 5 is arranged between the process units for receiving the workpiece released by the robot arm 4 of the previous process unit and rotating it to the corresponding next process unit group for the robot arm 4 of the next process unit group to pick up.

[0036] This embodiment is divided into two process unit groups. The first process unit group includes a feeding process unit 1 and ten parallel and spaced processing process units 3. The ten processing process units 3 are divided into three different turning units in front and back. The second process includes a discharging process unit 2. The rotary mechanism 5 is arranged between the end processing process unit 3 and the discharging process unit 2 of the first process unit group. In the first process unit group, two robotic arms 4 are provided (only one is shown in the figure), and in the second process unit group, one robotic arm 4 is provided. The structure of the robotic arm 4 is the same.

[0037] Along the process unit distribution direction in the process unit group, a truss 401 is arranged parallel to the process unit distribution direction. Figure 3 and Figure 4As shown, the robot arm 4 includes an X-axis movable overhead crane 402 that slides along the length direction of the truss 401, a guide rail 410 is provided on the truss 401 along the length direction of the truss 401, and a slider 411 is embedded in the guide rail 410 for sliding guidance. The X-axis movable overhead crane 402 is fixed on the slider 411, and a rack 403 is fixed on the truss 401 along the length direction of the truss 401. Two gears 404 that mesh with the rack 403 are provided in parallel on the X-axis movable overhead crane 402, one of which is driven to rotate by a first drive motor 405, and the first drive motor 405 is fixed on the X-axis movable overhead crane 402. A connecting beam 406 is fixed between the two X-axis movable overhead cranes 402, and the guiding sliding is carried out on the connecting beam 406. There is a Y-axis movable overhead crane 407. The structure of the Y-axis movable overhead crane 407 moving back and forth on the connecting beam 406 is consistent with the structure of the X-axis movable overhead crane 402 moving on the truss 401. A Z-axis lifting gripper assembly is provided on the Y-axis movable overhead crane 407. The Z-axis lifting gripper assembly includes a lifting seat arranged in an inverted T shape and a V-shaped gripper 408 arranged at the bottom of the lifting seat. A screw slide 409 assembly is provided on the Y-axis movable overhead crane 407. The screw slide 409 assembly includes a slide 409 for vertical lifting movement. The vertical section of the lifting seat is fixed on the slide 409 and rises and falls with the slide 409. The V-shaped gripper 408 is provided at the bottom of the horizontal section of the lifting seat and is driven to open and close by a cylinder fixed at the upper end of the horizontal section.

[0038] The feeding process unit 1 and the discharging process unit 2 are chain conveyor devices with the same structure. Figure 2 As shown, the discharge end of the feeding process unit 1 extends to the truss 401 of the previous process unit group and is close to the front-end processing process unit 3. The chain conveyor device includes two transmission chains that are distributed in parallel and synchronized. How the transmission chain achieves synchronized transmission is an existing technology and will not be repeated here. Between the transmission chains, a second V-shaped block 102 with an upward opening and used to receive a pull rod is fixed on each chain unit 101 that constitutes the transmission chain. A workpiece placement position for placing a pull rod is formed between the two opposite second V-shaped blocks 102.

[0039] The discharge process unit 2 is set at 90 degrees with the terminal processing process unit 3 of the previous process unit group, combined with Figure 5-Figure 7As shown, the rotary mechanism 5 includes a fixed ring frame 501, a rotating ring 502 that rotates concentrically on the fixed ring frame 501, and a workpiece receiving component that is fixed on the rotating ring 502 and switches its position between two adjacent process unit groups as the rotating ring 502 rotates. A driving component that drives the rotating ring 502 to rotate is provided on the fixed ring frame 501. There are 4 groups of workpiece receiving components evenly spaced around the axial direction of the rotating ring 502. Each group of workpiece receiving components includes parallel receiving rods 504, one end of the receiving rod 504 is fixed on the rotating ring 502 and the other end is suspended inside the rotating ring 502. Between the two parallel receiving rods 504, a first V-shaped block 505 with an opening facing upward and used to receive shaft parts is fixed at one end of the suspended receiving rod 504. A pull rod placement position is formed between adjacent first V-shaped blocks 505, and the driving component includes a driving wheel 508 that rotates horizontally on the fixed ring frame 501 and floats against the inner ring wall of the rotating ring 502. A second driving motor 507 for driving the driving wheel 508 to rotate is fixed on the fixed ring frame 501, and the driving wheel 508 is fixed on the floating seat 510. One end of the floating seat 510 is hinged to the fixed ring frame 501 and the other end of the floating seat 510 is hinged to the piston rod of a pressure cylinder 511. The cylinder body of the pressure cylinder 511 is hinged to the fixed ring frame 501. A movable rod 512 is provided between the motor shaft of the second driving motor 507 and the central axis 509 of the driving wheel 508, and the two ends are movably connected to the two through universal joints 513.

[0040] A position sensing device is provided between the rotating ring 502 and the fixed ring frame 501 to identify whether there is another workpiece receiving component aligned with the position of the robot arm 4 in the previous process unit group to release the workpiece when there is a workpiece receiving component aligned with the position of the robot arm 4 in the previous process unit group. Figure 5 As shown, the position sensing device includes a sensor 517 fixed on the fixed ring frame 501, and four sensing pads 516 are protruded on the rotating ring 502 at evenly spaced intervals in the circumferential direction. When any sensing pad 516 is aligned with the sensor 517, there are two groups of workpiece receiving components that are aligned with the position where the robot arm 4 in the previous process unit group releases the workpiece and the position where the robot arm 4 in the next process unit group picks up the workpiece. At this time, the sensor 517 sends a signal to the controller, and the controller controls the second drive motor 507 to stop rotating.

[0041] A guide support mechanism is provided between the rotating ring 502 and the fixed ring frame 501 to ensure that the rotating ring 502 rotates stably relative to the fixed ring frame 501. Figure 6As shown, the upper end of the rotating ring 502 is vertically folded outward to form a folded ring 503, and the guide support mechanism includes first support rollers 514 distributed circumferentially around the fixed ring frame 501 and rotatably abutting the lower end surface of the folded ring 503, and second support rollers 515 distributed circumferentially around the fixed ring frame 501 and rotatably abutting the outer ring wall of the rotating ring 502. The first support rollers 514 can form axial rolling support for the rotating ring 502, and the second support rollers 515 can form radial rolling support for the rotating ring 502, thereby realizing stable rotation of the rotating ring 502 relative to the lifting ring.

[0042] By adding a rotary mechanism 5 and combining the rotary mechanism 5 into the existing linearly distributed assembly line to form a new assembly line, any two adjacent process units can be arranged at an angle of 90° and connected by the rotary mechanism 5. The rotary mechanism 5 can move the workpiece released by the robot arm 4 of the previous process unit to a position where the robot arm 4 of the next process unit can pick it up by rotating, thereby realizing the continuous flow of the workpiece between the various process units of the entire assembly line. The number of rotary mechanisms 5 to be set can be determined according to the site space, thereby realizing the multi-angle arrangement of the assembly line and significantly improving the utilization rate of the space.

[0043] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A multi-process flow transmission line, comprising a process assembly consisting of a plurality of process units and a robotic arm (4) connecting the process units, characterized in that: The process assembly comprises at least two groups of process unit groups distributed at corners, the process unit groups comprise one or more process units distributed at intervals in parallel, at least one robot arm (4) is provided between each process unit and moves back and forth along the arrangement direction of the process units, and a rotary mechanism (5) is provided between the process units for receiving a workpiece released by the robot arm (4) of the previous process unit and rotating it to correspond to the next process unit group so as to be picked up by the robot arm (4) of the next process unit group.

2. The multi-process flow transmission line according to claim 1 is characterized in that: The rotary mechanism (5) comprises a fixed ring frame (501), a rotating ring (502) coaxially rotating on the fixed ring frame (501), and a workpiece receiving component fixed on the rotating ring (502) and switching positions between two adjacent process unit groups as the rotating ring (502) rotates. A driving component for driving the rotating ring (502) to rotate is provided on the fixed ring frame (501).

3. The multi-process flow and transmission line according to claim 2 is characterized in that: The workpiece receiving component comprises receiving rods (504) arranged in parallel, one end of the receiving rod (504) is fixed on the rotating ring (502) and the other end is suspended outside or inside the rotating ring (502), and a first V-shaped block (505) with an opening facing upward and used for receiving shaft parts is fixed between the two parallel receiving rods (504) at one end of the receiving rod (504) that is suspended.

4. The multi-process flow and transmission line according to claim 3 is characterized in that: At least one first V-shaped block is arranged at intervals along the axial direction of the receiving rod (504).

5. The multi-process flow transmission line according to claim 2 is characterized in that: The driving component comprises a driving wheel (508) that rotates horizontally on a fixed ring frame (501) and floats against the inner ring wall of a rotating ring (502). A second driving motor (507) for driving the driving wheel (508) to rotate is fixed on the fixed ring frame (501).

6. The multi-process flow and transmission line according to claim 5, characterized in that: The driving wheel (508) is fixed on a floating seat (510), one end of the floating seat (510) is hinged on a fixed ring frame (501), and the other end of the floating seat (510) is hinged on a piston rod of a pressure cylinder (511), the cylinder body of the pressure cylinder (511) is hinged on the fixed ring frame (501), and a movable rod (512) is provided between the motor shaft of the second driving motor (507) and the central axis (509) of the driving wheel (508), with both ends being movably connected to the two through a universal joint (513).

7. The multi-process flow and transmission line according to claim 5, characterized in that: A guide support mechanism is provided between the rotating ring (502) and the fixed ring frame (501) to ensure that the rotating ring (502) rotates stably relative to the fixed ring frame (501). The upper end of the rotating ring (502) is vertically folded outward to form a folding ring (503). The guide support mechanism includes first support rollers (514) that are distributed at intervals around the circumference of the fixed ring frame (501) and rotate to abut against the lower end surface of the folding ring (503), and second support rollers (515) that are distributed at intervals around the circumference of the fixed ring frame (501) and rotate to abut against the outer ring wall of the rotating ring (502).

8. The multi-process flow and transmission line according to claim 1 is characterized in that: The process assembly comprises a feeding process unit (1), a discharging process unit (2) and a plurality of processing process units (3) located between the feeding process unit (1) and the discharging process unit (2); and a rotary mechanism (5) is provided between any adjacent process units that are distributed at a corner.

9. The multi-process flow and transmission line according to claim 8, characterized in that: The feeding process unit (1) and the discharging process unit (2) are chain conveying devices with the same structure. The chain conveying device includes two transmission chains that are distributed in parallel and move synchronously. Between the transmission chains, a second V-shaped block (102) with an upward opening and used to receive a pull rod is fixed on each chain unit (101) that constitutes the transmission chain.

10. The multi-process flow transmission line according to claim 8, characterized in that: Two trusses (401) are arranged in parallel along the distribution direction of the process units in the process unit group. The robot arm (4) includes an X-axis movable overhead crane (402) guided and slidable on the trusses (401) and a connecting beam (406) with both ends fixed on the X-axis movable overhead crane (402). A Y-axis movable overhead crane (407) is guided and slidable on the connecting beam (406). A Z-axis lifting gripper assembly is arranged on the Y-axis movable overhead crane (407). The Z-axis lifting gripper assembly includes a V-shaped gripper (408) and a lifting mechanism for driving the V-shaped gripper (408) to rise and fall.

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