Workpiece transportation circulating type production line for assembly workshop and circulating method

Abstract

The invention relates to the technical field of transportation, in particular to a workpiece transportation circulation type production line for an assembly workshop and a circulation method. A return line body; the transfer part is arranged at the end parts of the station side line body and the return line body; the transfer part is used for transferring a jig between the station side line body and the return line body so as to form a production line capable of circulating the jig; the transfer part comprises a base plate; the first driving assembly and the second driving assembly are arranged on the base plate in parallel. By means of the closed-loop design of the station side line body, the transfer part, the return line body, the transfer part and the station side line body, jigs can be reused in a circulating mode, spare jigs do not need to be additionally reserved, and only the basic operation number needs to be maintained; the transfer part drives the first transfer assembly and the second transfer assembly to form two sets of independent transfer channels through the first drive assembly and the second drive assembly correspondingly, and the first transfer assembly and the second transfer assembly do not depend on each other and can work synchronously.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of transportation technology, in particular to a workpiece transportation circulating production line for an assembly workshop and a circulating method of the workpiece transportation circulating production line for an assembly workshop. BACKGROUND

[0002] In the production operation of an assembly workshop, a jig is used as a bearing and conveying carrier of a workpiece, and the transmission efficiency and circulating reuse capability of the jig directly determine the overall productivity of a production line.

[0003] A traditional production line usually adopts a "one-way conveying and manual backflow" mode. After a workpiece is machined on a work station side line body, an empty jig with the workpiece unloaded needs to be manually carried back to the starting point of the line body. This not only occupies a large amount of labor cost, but also causes the jig to collide and deviate in position during the manual carrying process, which leads to a decrease in the assembly precision of subsequent workpieces. Meanwhile, the carrying gap causes the production line to stop and wait. SUMMARY

[0004] In view of the problems in the prior art, the present application provides a workpiece transportation circulating production line for an assembly workshop and a circulating method thereof, and the specific technical solutions are as follows. On one hand, the present application provides a workpiece transportation circulating production line for an assembly workshop, which comprises: a work station side line body, wherein the work station side line body transmits a jig; a backflow line body parallel to the work station side line body and opposite in transmission direction; and further comprises: a transfer part provided at the end of the work station side line body and the backflow line body, which is used to transfer the jig between the work station side line body and the backflow line body to form a production line in which the jig can circulate; the transfer part comprises: a base plate; a driving assembly one and a driving assembly two arranged side by side on the base plate; a receiving assembly one, a transfer assembly one and a receiving assembly two arranged in sequence and drivingly arranged on the driving assembly one; and a transfer assembly two drivingly arranged on the driving assembly two; the transfer part is transformed between a first state and a second state when transferring the jig between the work station side line body and the backflow line body; in the first state, the transfer assembly one is butted against the backflow line body to transfer the jig, and the transfer assembly two is butted against the work station side line body through the receiving assembly one to receive the jig; in the second state, the transfer assembly one is butted against the work station side line body to receive the jig, and the transfer assembly two is butted against the backflow line body through the receiving assembly two to transfer the jig.

[0005] As a further technical scheme of the present application, the receiving assembly one, the transfer assembly one, the receiving assembly two and the transfer assembly two all comprise: The fixed block is in transmission connection with the screw rod, and a third sliding channel is formed in the fixed block; The jig carrier is slidably arranged above the fixed block; The slide rod is connected to the bottom of the jig carrier, and the slide rod penetrates through the third sliding channel to guide the relative sliding of the fixed block and the jig carrier; The substrate is provided with a first sliding channel and a second V-shaped section, and in the receiving assembly one, the transfer assembly one and the receiving assembly two, the slide rod penetrates through the third sliding channel and extends into the first sliding channel, and in the transfer assembly two, the slide rod penetrates through the third sliding channel and extends into the second V-shaped section; The first sliding channel comprises, in sequence: The first inclined section corresponds to the receiving assembly one, and when the receiving assembly one is driven by the driving assembly one, the jig carrier in the receiving assembly one presents an inclined trajectory to approach or move away from the work station side line body to avoid interference with the work station side line body; The first V-shaped section corresponds to the transfer assembly one, and when the transfer assembly one is driven by the driving assembly one, the jig carrier in the transfer assembly one presents an inclined trajectory to butt against the work station side line body or the reflow line body to avoid interference with the work station side line body or the reflow line body; The second inclined section corresponds to the receiving assembly two, and when the receiving assembly two is driven by the driving assembly one, the jig carrier in the receiving assembly two presents an inclined trajectory to approach or move away from the reflow line body to avoid interference with the reflow line body; The second V-shaped section corresponds to the transfer assembly two, and when the transfer assembly two is driven by the driving assembly two, the jig carrier in the transfer assembly two presents an inclined trajectory to butt against the work station side line body or the reflow line body to avoid interference with the work station side line body or the reflow line body.

[0006] As a further technical scheme of the present application, in the receiving assembly one and the receiving assembly two, the relative sliding between the fixed block and the jig carrier is realized through a first sliding assembly, and the first sliding assembly comprises a first sliding groove formed in the surface of the fixed block and a first sliding plate slidably arranged in the first sliding groove, the first sliding plate being connected to the jig carrier, and the first sliding groove and the first sliding plate are in T-shaped structure or dovetail-shaped structure.

[0007] As a further technical scheme of the present application, the transfer part further has a third state during the transformation between the first state and the second state; In the third state, the slide rod in the transfer assembly one is located at the inflection point of the first V-shaped section, the slide rod in the transfer assembly two is located at the inflection point of the second V-shaped section, and the jig carriers in the two transfer assemblies are both perpendicular to the work station side line body and parallel to each other to avoid interference between the jig carriers in the transfer assembly one and the transfer assembly two.

[0008] As a further technical scheme of the present application, in the transfer assembly one and the transfer assembly two, the fixed block and the jig carrier are relatively slid through the sliding assembly two, the sliding assembly two comprises a sliding groove two communicated with the sliding channel three and a sliding plate two slidably arranged in the sliding groove two, and the sliding rod is rotationally connected with the sliding plate two.

[0009] As a further technical scheme of the present application, in the transfer assembly one and the transfer assembly two, the fixed block further comprises a rotating assembly, the fixed block comprises a tooth channel communicated with the sliding channel three, a tooth block group arranged on an end wall of the tooth channel, and a gear coaxially connected outside the sliding rod, and when the sliding rod slides along the track of the sliding channel three, the gear engages the tooth block group to drive the jig carrier to synchronously rotate.

[0010] As a further technical scheme of the present application, the fixed block further comprises a control assembly, the control assembly comprises: a sliding channel four communicated with the sliding channel three, the sliding channel four comprises a rotating section and a sliding section; and a special-shaped section formed on the sliding rod, the special-shaped section is slidably arranged in the sliding channel four, and the special-shaped section has a long diameter corresponding to the rotating section and a short diameter corresponding to the sliding section; when the special-shaped section moves into the rotating section, the special-shaped section is allowed to rotate, and when the special-shaped section moves into the sliding section, the special-shaped section is allowed to slide to keep the jig carrier in the butt joint state.

[0011] As a further technical scheme of the present application, a transition section is further arranged between the rotating section and the sliding section, and the transition section is designed to be inclined to guide the special-shaped section to move from the sliding section to the rotating section.

[0012] As a further technical scheme of the present application, the driving assembly one and the driving assembly two each comprise: two support plates arranged at intervals; a lead screw rotationally arranged between the two support plates; and a driving motor drivingly connected with the lead screw.

[0013] On the other hand, the present application provides a circulating method of the workpiece transportation circulating production line for an assembly workshop, comprising the following steps: S1: jig conveying and processing preparation; the driving assembly one and the driving assembly two of the transfer part are started, the transfer assembly one, the receiving assembly one and the receiving assembly two are pre-positioned to non-interference positions close to the end of the station side line body through the lead screw of the driving assembly one, and the transfer assembly two is pre-positioned to an initial position away from the transfer assembly one through the lead screw of the driving assembly two; S2: jig transfer and receiving control in the first state; The transfer department has switched to the first state: The drive component moves the transfer component, causing its fixture carrier to precisely dock with the return line in an inclined trajectory, transferring the pre-loaded processed fixture from the end of the workstation side line to the return line. Simultaneously, drive component two drives transfer component two to move, causing its fixture carrier to align with the side line of the workstation; at this time, drive component one simultaneously drives receiving component one to move and fill the gap between transfer component two and the side line of the workstation. Transfer component two connects with the side line of the workstation through receiving component one, receiving another batch of processed fixtures transmitted by the side line of the workstation. S3: Component avoidance switching in the third state; When transfer component one and transfer component two change positions between the return line and the workstation side line, the control transfer unit switches to the third state: Drive component one drives transfer component one to move along the lead screw, so that the slide of transfer component one slides to the inflection point of V-section one, and its fixture carrier rotates around the slide to a position perpendicular to the side line of the workstation. Synchronously, drive component two drives transfer component two to move along the lead screw, so that the slide rod of transfer component two slides to the inflection point of V-section two, and its fixture carrier rotates around the slide rod to a position perpendicular to the side line of the work station. The fixture carriers of transfer component one and transfer component two are parallel to each other to avoid interference when they move towards each other. During this process, the gear of the rotating component slides with the slide rod and meshes with the tooth block group of the tooth path, driving the fixture carrier to rotate synchronously; at the same time, the irregular section of the control component slides from the sliding section into the rotating section along the transition section, allowing the slide rod to drive the fixture carrier to rotate. S4: Fixture transfer and acceptance control in the second state; The transfer department switches to the second state: The drive component drives the transfer component to continue moving, so that its fixture carrier docks with the side line of the workstation, preparing the fixture to receive the transfer from the side line of the workstation again. Simultaneously, drive component two drives transfer component two to move, aligning its fixture carrier with the return line; at this time, drive component one synchronously drives receiving component two to move and fill the gap between transfer component two and the return line. Transfer component two connects with the return line through receiving component two, transferring the processed fixture it receives to the return line. During this process, the irregular section of the control component slides from the rotating section into the sliding section along the transition section, restricting the rotation of the slide rod and ensuring that the fixture carrier maintains the docking posture; S5: When the workstation side line continuously transports the jig to be transferred and the return line continuously transports the empty jig, steps S2-S4 are automatically repeated to realize the position change of the jig between the workstation side line, the transfer section and the return line.

[0014] The beneficial effects of this invention are as follows: (1) In this solution, the fixtures can be 100% reused through a closed-loop design of “station side line → transfer section → return line → transfer section → station side line”. There is no need to reserve spare fixtures. Only the basic operating quantity needs to be maintained. The transfer section drives “transfer component one” and “transfer component two” respectively through drive component one and drive component two to form two independent transfer channels. The two are independent of each other and can operate synchronously: In the first state, while transfer component one transfers fixtures to the return line, transfer component two receives another set of fixtures from the station side line through receiving component one; In the second state, while transfer component one receives fixtures from the station side line, transfer component two transfers fixtures to the return line through receiving component two. Compared with the traditional single-channel transfer mechanism, the fixture transfer volume per unit time of this solution is increased by 100%, which completely solves the capacity bottleneck of the transfer section and does not require the reduction of the line transmission speed due to transfer efficiency limitations.

[0015] (2) This solution features a composite slide structure with "inclined section and V-shaped section" designed specifically on the substrate: the first receiving component corresponds to the first inclined section of slide one, the second receiving component corresponds to the second inclined section, the first transfer component corresponds to the first V-shaped section, and the second transfer component corresponds to the second V-shaped section. Each slide section is designed with an inclination of 15°-30°, which can drive the fixture carrier to approach or move away from the line in an inclined posture. For example, when the first receiving component approaches the line on the side of the workstation, the fixture carrier tilts upward along the first inclined section to avoid collision with the side guardrail and the transfer rail of the line on the side of the workstation. Compared with the traditional "horizontal straight line docking" solution, the inclined trajectory can ensure that the fixture carrier always maintains a safe gap with the line during the movement, completely avoiding deformation of the line rail and wear of the fixture carrier caused by collision.

[0016] (3) In view of the interference problem of the opposite motion of transfer component 1 and transfer component 2 when switching between the first and second states, this solution designs a "third state" as a transition: when the two sets of transfer components need to change the docking position, drive components 1 and 2 work together to control the slide rod to slide to the V-shaped segment inflection point. At this time, the fixture carrier rotates synchronously under the drive of the rotating component, and finally both are in a posture perpendicular to the side line of the work station and parallel to each other. The perpendicular and parallel posture makes the motion trajectory of the two sets of transfer components have no overlapping area, avoiding component deformation caused by interference between transfer component 1 and transfer component 2.

[0017] (4) The control component achieves precise control of the attitude of the fixture carrier through a purely mechanical structure of “slide segmentation and irregular segment adaptation”: when the attitude of the fixture carrier needs to be adjusted, the slide rod drives the irregular segment to slide into the rotating segment along the transition section. The gap between the long diameter and the inner wall of the rotating segment is matched, allowing the slide rod to rotate around the axis, providing freedom for the attitude change of the fixture carrier; when the fixture carrier needs to be connected to the body, the irregular segment slides into the sliding segment along the transition section. The short diameter is tightly fitted with the inner wall of the sliding segment, restricting the rotation of the slide rod, ensuring that the fixture carrier maintains a horizontal docking attitude. The two-way function of “rotation allowance and sliding lock” is seamlessly connected, and the fixture carrier can be docked stably immediately after the attitude change. The tilting guidance of the transition section makes the switching of the irregular segment without jamming. Attached Figure Description

[0018] Figure 1 This diagram shows the overall structure of a workpiece transport loop production line in an assembly workshop. Figure 2 A schematic diagram of the transfer unit in its first state is shown; Figure 3 A schematic diagram of the transfer unit in the second state is shown; Figure 4 A schematic diagram of the transfer unit in the third state is shown; Figure 5 A schematic diagram of the structure of the substrate, drive component one, and drive component two is shown. Figure 6 A structural schematic diagram of the fixing block, the fixture support component, and the sliding rod is shown; Figure 7 A schematic diagram of the mating structure of the sliding component, the rotating component, and the control component is shown. Figure 8 A schematic diagram of the structure of sliding component two is shown; Figure 9 A schematic diagram of the rotating assembly is shown. Figure 10 A schematic diagram of the control component is shown.

[0019] Figure Descriptions: 100, Workstation Side Line; 200, Return Line; 300, Transfer Section; 310, Base Plate; 311, Slide 1; 3111, Inclined Section 1; 3112, V-Shaped Section 1; 3113, Inclined Section 2; 312, V-Shaped Section 2; 320, Drive Assembly 1; 321, Support Plate; 322, Lead Screw; 323, Drive Motor; 330, Drive Assembly 2; 340, Receiving Assembly 1; 350, Transfer Assembly 1; 360, Receiving Assembly 2; 370, Transfer Assembly 2; 400, Fixing Block ; 410, Slide 3; 420, Sliding Component 1; 421, Slide 1; 422, Slide 1; 430, Sliding Component 2; 431, Slide 2; 432, Slide 2; 440, Rotating Component; 441, Gear Track; 442, Gear Block Assembly; 443, Gear; 450, Control Component; 451, Slide 4; 4511, Rotating Section; 4512, Sliding Section; 4513, Transition Section; 452, Irregular Section; 4521, Long Diameter; 4522, Short Diameter; 500, Fixture Support Component; 600, Slide Rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] Example 1 Figure 1 This diagram shows the overall structure of a workpiece transport loop production line in an assembly workshop. Figure 1 In this assembly workshop, the workpiece transport reusable production line includes: The workstation side line 100 has a jig conveyed on it; The return line 200 is parallel to the station-side line 100 and has the opposite transmission direction. And a transfer unit 300 is provided at the ends of the workstation side line 100 and the return line 200. The transfer unit 300 is used to transfer fixtures between the workstation side line 100 and the return line 200 to form a production line in which the fixtures can be circulated.

[0022] The workstation-side conveyor 100 serves as the "main processing line," responsible for transporting the workpiece-bearing fixtures along a preset trajectory to each processing station. As the fixtures move along the line, they sequentially complete assembly, inspection, and other processes. The return line 200, serving as the "return line," is parallel to the workstation-side conveyor 100 but in the opposite direction, primarily transporting empty fixtures unloaded after processing. The transfer unit 300, installed at the ends of the two lines, acts as a "connecting hub." After the fixtures at the end of the workstation-side conveyor 100 complete all processing, the transfer unit... The fixture 300 receives the fixture and transfers it to the starting point of the return line 200. At the same time, the empty fixture at the end of the return line 200 is transferred back to the starting point of the workstation side line 100 through another transfer unit 300. Finally, a closed-loop system of "fixture circulation and process continuity" is formed. This solves the pain point of "fixtures needing to be manually transported back" in traditional production lines, reducing labor costs and handling errors. The forward transmission of the workstation side line ensures the orderly progress of the processing flow, and the reverse transmission of the return line enables the reuse of fixtures, eliminating the need for additional reserves of a large number of fixtures.

[0023] In this embodiment, the driving force for the jig's movement is achieved using magnetic levitation technology. Specifically, the jig's power originates from the magnetic levitation system. The moving trolley serves as the jig's support base, with permanent magnets installed at its bottom, forming an electromagnetic coupling with the magnetic drive motor below the production line. When the magnetic drive motor is energized, it generates an alternating magnetic field. This magnetic force drives the moving trolley to move without contact along a linear guide rail, and the jig is fixed to the moving trolley and moves synchronously with it. Simultaneously, a magnetic scale installed on the side of the production line collects the moving trolley's position information in real time and feeds the data back to the control system. The control system adjusts the magnetic field strength and direction of the magnetic drive motor based on the feedback signal, precisely controlling the moving speed and stopping position of the moving trolley, achieving high-speed transmission and high-precision positioning of the jig. However, it should be noted that this magnetic levitation technology is not further protected and is only provided to facilitate understanding of the technical solution by those skilled in the art.

[0024] It should be noted that this embodiment mainly describes the transfer of the fixture from the workstation side line 100 to the return line 200, but those skilled in the art should understand that the fixture is transferred from the return line 200 to the workstation side line 100.

[0025] Figure 2 A schematic diagram of the transfer unit 300 in its first state is shown; Figure 3 A schematic diagram of the transfer unit 300 in the second state is shown; Figure 2 and Figure 3 The 300-unit transit department includes: substrate 310; A first driving assembly 320 and a second driving assembly 330 are arranged side by side on a substrate 310; The transmission is mounted on the drive assembly 320 and the receiving assembly 340, the transfer assembly 350 and the receiving assembly 360 are arranged in sequence. The transmission is mounted on the transfer assembly 370 on the drive assembly 330; When the transfer unit 300 transfers fixtures between the workstation side line 100 and the return line 200, it changes between the first state and the second state. In the first state, the first transfer component 350 connects with the return line 200 to transfer the fixture, and the second transfer component 370 connects with the station side line 100 through the first receiving component 340 to receive the fixture. In the second state, transfer component 1 350 connects with station side line 100 to receive fixture, and transfer component 2 370 connects with return line 200 through receiving component 2 360 to transfer fixture.

[0026] The transfer unit 300 uses the base plate 310 as a unified mounting reference, and the drive assembly 320 and drive assembly 330 arranged side by side on it provide power to two independent transfer units respectively: Drive component 1 320 corresponds to transfer component 1 350, and simultaneously drives receiving component 1 340 and receiving component 2 360 to move synchronously. Receiving components 1 / 2 are not key nodes in the jig transfer path, but only serve as "distance compensation extension parts". When there is a gap between transfer component 2 and the line, the gap is filled to ensure smooth docking. Drive component 2 330 drives "transfer component 2" 370 to move independently, forming two sets of parallel transfer channels with transfer component 1 350, which are independent of each other.

[0027] In this embodiment, the main task is to transfer the fixture on the workstation side line 100 to the return line 200: In the first state, the first transfer component 350, driven by the first drive component, moves to a position aligned with the return line 200, transferring the fixtures it receives to the return line 200. At the same time, the second transfer component 370, driven by the second drive component, moves to a position close to the station side line 100. The first receiving component 340 moves with the first drive component and acts as an "extension" to fill the gap between the second transfer component and the station side line 100, allowing the second transfer component to smoothly connect to the station side line 100 through the first receiving component and receive another batch of processed fixtures. In the second state, the first transfer component 350 is driven by the first drive component and moves to a position aligned with the side line 100 of the workstation, and receives the fixture again; at the same time, the second transfer component 370 moves to a position close to the return line 200, and the second receiving component 360 moves with the first drive component and acts as an "extension" to allow the second transfer component to smoothly dock with the return line 200, and transfer the fixture above it to the return line 200. Ultimately, a dual-channel parallel mode is formed where transfer component one and transfer component two are independent of each other, thus doubling the jig transfer efficiency.

[0028] Figure 5 A schematic diagram of the structure of substrate 310, drive assembly 320 and drive assembly 330 is shown. Figure 5 In the above, both driver component 1 320 and driver component 2 330 include: Two spaced-apart support plates 321; Rotate the lead screw 322 that is positioned between the two support plates 321; And a drive motor 323 that is connected to the lead screw 322.

[0029] Drive assembly 1 320 and drive assembly 2 330 have the same structure. After the motor starts, the rotational motion of the output shaft is transmitted to the lead screw, causing the lead screw to rotate around its own axis. The functional components such as receiving assembly 1 340 and transfer assembly 1 350 are threadedly connected to the lead screw 322 through the nut seat. The rotational motion of the lead screw is converted into the linear motion of the nut seat through the threaded engagement, thereby driving each component to move precisely along the lead screw axis.

[0030] Figure 6 A structural schematic diagram of the fixing block 400, the fixture support 500, and the slide rod 600 is shown. Figure 6 Combination Figure 5 The receiving component 1 340, the transfer component 1 350, the receiving component 2 360, and the transfer component 2 370 all include: A fixed block 400 is connected to the lead screw 322 for transmission, and a slide rail 410 is provided on the fixed block 400; A fixture support 500 that can be slidably mounted above the fixed block 400; And a slide rod 600 connected to the bottom of the fixture carrier 500, the slide rod 600 passing through the slide rail 3 410 to guide the relative sliding of the fixing block 400 and the fixture carrier 500; The substrate 310 has a slide rail 311 and a V-shaped section 312. In the receiving component 340, the transfer component 350 and the receiving component 360, the slide rod 600 passes through the slide rail 310 and extends into the slide rail 311. In the transfer component 370, the slide rod 600 passes through the slide rail 310 and extends into the V-shaped section 312. Slide 311 includes the following connected in sequence: Inclined segment 3111 corresponds to receiving component 340. When receiving component 340 is driven by driving component 320, the fixture carrier 500 therein moves towards or away from the workstation side line body 100 in an inclined trajectory to avoid interference with the workstation side line body 100. V-shaped segment 3112 corresponds to transfer assembly 350. When transfer assembly 350 is driven by drive assembly 320, the fixture carrier 500 therein is inclined to dock with station side line 100 or return line 200 to avoid interference with station side line 100 or return line 200. And the inclined section 3113, corresponding to the receiving component 360, when the receiving component 360 is driven by the driving component 320, the fixture carrier 500 therein moves towards or away from the return line 200 in an inclined trajectory to avoid interference with the return line 200. V-shaped segment 312 corresponds to transfer component 370. When transfer component 370 is driven by drive component 330, the fixture carrier 500 therein is inclined to dock with station side line 100 or return line 200 to avoid interference with station side line 100 or return line 200.

[0031] The core components, such as receiving component 340 and transfer component 350, are all composed of a "fixed block, fixture carrier, and sliding rod": the fixed block 400 moves with the lead screw 322, the fixture carrier 500 is used to place the fixture, and the sliding rod 600 passes through the slide rail 3 410 of the fixed block and extends into the slide rail 311 or V-shaped section 312 of the substrate, forming a "double guide"; when the drive component drives the fixed block to move, the sliding rod slides along a preset trajectory in the slide rail of the substrate, thereby causing the fixture carrier to slide relative to the fixed block; when the receiving component 340 moves, the sliding rod slides along the inclined section Sliding component 3111 causes the fixture carrier to tilt towards / away from the workstation side line 100. When transfer component 350 moves, the slide rod slides along V-section 3112, causing the fixture carrier to tilt and align with the line. Component 360 and transfer component 370 work similarly, achieving tilting motion through tilt section 3113 and V-section 312 respectively, avoiding collisions with the line edge. The double guidance of the slide rod ensures precise and controllable tilting trajectory of the fixture carrier, completely avoiding interference and collision between the component and the line, reducing jerking at the docking point, and resulting in smoother transfer.

[0032] See also Figure 6 In the first receiving component 340 and the second receiving component 360, the fixed block 400 and the fixture support 500 slide relative to each other through the first sliding component 420. The first sliding component 420 includes a groove 421 formed on the surface of the fixed block 400 and a slide plate 422 slidably disposed in the groove 421. The slide plate 422 is connected to the fixture support 500. The cross-sections of the groove 421 and the slide plate 422 are formed into a T-shaped structure or a dovetail structure.

[0033] In receiving component 1 340 and receiving component 2 360, the relative sliding between the fixed block 400 and the fixture carrier 500 is enhanced by the sliding component 1 420: a T-shaped or dovetail-shaped groove 1 421 is opened on the surface of the fixed block, and the sliding plate 1 422 at the bottom of the fixture carrier is embedded in the groove, forming a "double constraint" with the guiding effect of the sliding rod; when the sliding rod drives the fixture carrier to slide, the sliding plate 1 moves synchronously in the groove 1. The "anti-detachment design" of the T-shaped / dovetail structure restricts the displacement of the sliding plate 1 in the direction perpendicular to the sliding direction, ensuring that the fixture carrier slides smoothly only along the direction of the groove and avoids deviation.

[0034] Figure 4 A schematic diagram of the transfer unit 300 in the third state is shown; Figure 4 In the process of the transfer unit 300 changing between the first state and the second state, it also has a third state; In the third state, the slide rod 600 in the first transfer assembly 350 is located at the inflection point of the first V-section 3112, and the slide rod 600 in the second transfer assembly 370 is located at the inflection point of the second V-section 312. The fixture carriers 500 in both are perpendicular to the workstation side line body 100 and parallel to each other, so as to avoid interference between the fixture carriers 500 in the first transfer assembly 350 and the second transfer assembly 370.

[0035] The third state is achieved through the coordinated control of drive component 1 320 and drive component 2 330: drive component 1 drives transfer component 1 350 to move along the lead screw, causing its slide rod to slide in the "non-connection section" of slide rail 1 311, thereby rotating the fixture carrier to a direction perpendicular to the workstation side line 100; at the same time, drive component 2 drives transfer component 2 370 to move along the lead screw, causing its slide rod to slide in the "non-connection section" of V-shaped section 2 312, thereby rotating the fixture carrier to a vertical direction as well; at this time, the extension directions of the two fixture carriers are both perpendicular to the line and parallel to each other, with no overlapping areas, thus avoiding motion interference. It is easy to understand that the third state is equivalent to the "avoidance mode" of the transfer unit. Since the movement directions of transfer component 1 and transfer component 2 are opposite, when the two move towards each other, their edges are prone to friction and collision. Therefore, they are rotated to change their posture to avoid each other, so as to achieve smooth alternating position changes in a limited space.

[0036] Figure 7 A schematic diagram of the mating structure of sliding component 430, rotating component 440 and control component 450 is shown. Figure 8 A schematic diagram of the structure of sliding component 2 430 is shown; Figure 7 and Figure 8In the transfer component 1 350 and transfer component 2 370, the fixed block 400 and the fixture carrier 500 slide relative to each other through the sliding component 2 430. The sliding component 2 430 includes a slide groove 2 431 connected to the slide rail 3 410 and a slide plate 2 432 slidably disposed in the slide groove 2 431. The slide rod 600 is rotatably connected to the slide plate 2 432.

[0037] In the transfer assembly 1 350 and the transfer assembly 2 370, the slide groove 2 431 of the sliding assembly 2 430 is connected to the slide rail 3 410, the slide plate 2 432 is embedded in the slide groove 2 and connected to the fixture carrier 500, and the slide rod 600 is rotatably connected to the slide plate 2 through a deep groove ball bearing; when the slide rod slides in the base plate slide rail or V-shaped section, it drives the slide plate 2 to move in the slide groove 2, thereby driving the fixture carrier to slide relative to the fixed block; at the same time, the rotatable connection between the slide rod and the slide plate 2 provides a fulcrum for the rotation of the fixture carrier, so that the fixture carrier can rotate around the axis of the slide rod, reserving motion space for subsequent posture adjustment.

[0038] Figure 9 A schematic diagram of the rotating assembly 440 is shown. Figure 7 Combination Figure 9 In the first transfer component 350 and the second transfer component 370, the fixed block 400 is also provided with a rotating component 440. The fixed block 400 includes a toothed track 441 connected to the slide rail 3 410, a toothed block group 442 arranged on the end wall of the toothed track 441, and a gear 443 coaxially connected to the outside of the slide rod 600. When the slide rod 600 slides along the track of the slide rail 3 410, the gear 443 meshes with the toothed block group 442 to drive the fixture carrier 500 to rotate synchronously.

[0039] It should be noted that in transfer assembly 1 350 and transfer assembly 2 370, the rotation directions of the two fixture carriers 500 are the same so that they are always parallel.

[0040] The rotating component 440 achieves the rotation of the fixture carrier through gear meshing: the toothed path 441 of the fixed block 400 is connected to the slide rail 3 410, the toothed block group 442 on the end wall of the toothed path forms a fixed rack, and the gear 443 coaxially fixed to the outside of the slide rod 600 meshes with the toothed block group; when the slide rod slides along the slide rail 3 410, the gear moves with the slide rod and meshes with the toothed block group, and the rotational motion of the gear is transmitted to the slide plate 2 432 through the slide rod, thereby driving the fixture carrier 500 to rotate around the axis of the slide rod; since the toothed block groups of the transfer component 1 350 and the transfer component 2 370 are arranged in the same direction and the gears rotate in the same direction, the two fixture carriers rotate synchronously and remain parallel, avoiding interference between the components after rotation, ensuring the stability of the fixture posture during transfer, and further improving the success rate of fixture transfer.

[0041] Figure 10 A schematic diagram of the control component 450 is shown. Figure 10Combination Figure 7 The fixed block 400 is also provided with a control component 450, which includes: Slide four 451 is connected to slide three 410. Slide four 451 includes a rotating section 4511 and a sliding section 4512. The irregular section 452 formed on the slide rod 600 is slidably disposed in the slide rail 451. The irregular section 452 has a major axis 4521 corresponding to the rotating section 4511 and a minor axis 4522 corresponding to the sliding section 4512. When the irregular section 452 moves into the rotating section 4511, it is allowed to rotate; when the irregular section 452 moves into the sliding section 4512, it is allowed to slide so that the fixture carrier 500 remains in the docking state.

[0042] The control component 450 achieves state switching through "slide segmentation and irregular section adaptation": the inner wall spacing of the rotating section 4511 of slide 451 matches the long axis 4521 of the irregular section 452, which can accommodate the long axis rotation, and the inner wall spacing of the sliding section 4512 matches the short axis 4522; when the irregular section is in the sliding section, the short axis is in contact with the inner wall of the sliding section, the slide rod cannot rotate, and the fixture carrier can only slide and maintain the docking posture; when the irregular section moves into the rotating section, the long axis is in contact with the inner wall of the rotating section, the slide rod can rotate freely, and the fixture carrier can adjust its posture under the drive of the rotating component.

[0043] See also Figure 10 A transition section 4513 is also provided between the rotating section 4511 and the sliding section 4512. The transition section 4513 is inclined to guide the irregular section 452 to move from the sliding section 4512 to the rotating section 4511.

[0044] The transition section 4513 connects the rotating section 4511 and the sliding section 4512. The inner wall adopts a 15°-20° inclined design. One end smoothly transitions with the "short diameter matching distance" of the sliding section, and the other end smoothly transitions with the "long diameter matching distance" of the rotating section. When the irregular section 452 moves from the sliding section to the rotating section, the inclined inner wall of the transition section guides the irregular section to gradually adjust the long diameter direction so that it is aligned with the spacing direction of the rotating section, avoiding jamming caused by sudden changes in spacing. Conversely, when moving from the rotating section to the sliding section, the transition section also guides the short diameter to align with the spacing of the sliding section to ensure smooth sliding.

[0045] Example 2 The circulation method for a workpiece transport loop production line in an assembly workshop includes the following steps: S1: Fixture transport and processing preparation; Start the station side line 100 and return line 200, so that the station side line 100 transmits the fixture carrying the workpiece to be processed in the forward direction along the preset trajectory, and the return line 200 transmits the empty fixture in the reverse direction along the trajectory parallel to the station side line 100; at the same time, start the drive assembly 320 and drive assembly 330 of the transfer unit 300, so that the transfer assembly 350, receiving assembly 340, and receiving assembly 360 are pre-positioned with the lead screw 322 of the drive assembly 320, and the transfer assembly 370 is pre-positioned with the lead screw 322 of the drive assembly 330, ensuring that the initial posture of the fixture carrier 500 of each assembly is free from interference. S2: Fixture transfer and acceptance control in the first state; Transfer unit 300 switches to first state: Drive component 320 drives transfer component 350 to move, causing the slide rod 600 of transfer component 350 to slide along the V-shaped section 3112 of slide rail 311 on substrate 310, thereby driving its fixture carrier 500 to precisely dock with return line 200 in an inclined trajectory, and transferring the pre-loaded processed fixture from the end of station side line 100 to return line 200. Synchronously, drive component 2 330 drives transfer component 2 370 to move, causing the slide rod 600 of transfer component 2 370 to slide along V-shaped section 2 312 to a position close to the workstation side line body 100; at this time, drive component 1 320 synchronously drives receiving component 1 340 to move, causing the slide rod 600 of receiving component 1 340 to slide along the inclined section 3111 of slide rail 1 311, and its fixture carrier 500 fills the gap between transfer component 2 370 and workstation side line body 100 in an inclined trajectory. Transfer component 2 370 connects with workstation side line body 100 through receiving component 1 340, and receives another batch of processed fixtures transmitted by workstation side line body 100. S3: Component avoidance switching in the third state; After transfer component 1 350 completes the transfer of the fixture to the return line 200 and transfer component 2 370 completes the receipt of the fixture, control transfer unit 300 to switch to the third state: Drive assembly 320 drives transfer assembly 350 to move along lead screw 322, so that the slide rod 600 of transfer assembly 350 slides to the inflection point of V-section 3112, and its fixture carrier 500 rotates around the slide rod 600 to a position perpendicular to the workstation side line body 100. Synchronously, drive assembly 2 330 drives transfer assembly 2 370 to move along lead screw 322, so that the slide rod 600 of transfer assembly 2 370 slides to the inflection point of V-section 2 312, and its fixture carrier 500 rotates around the slide rod 600 to a position perpendicular to the workstation side line body 100. Furthermore, transfer assembly 1 350 and fixture carrier 500 of transfer assembly 2 370 are parallel to each other to avoid interference when they move towards each other. During this process, the gear 443 of the rotating component 440 slides with the slide rod 600 and meshes with the tooth block group 442 of the tooth path 441, driving the fixture carrier 500 to rotate synchronously; at the same time, the irregular section 452 of the control component 450 slides from the sliding section 4512 into the rotating section 4511 along the transition section 4513, allowing the slide rod 600 to drive the fixture carrier 500 to rotate. S4: Fixture transfer and acceptance control in the second state; Transfer unit 300 switches to the second state: Drive component 320 drives transfer component 350 to continue moving, so that the slide rod 600 of transfer component 350 slides along V-section 3112 to the position where it docks with the workstation side line body 100. Its fixture carrier 500 is inclined and precisely docks with the workstation side line body 100, ready to receive the fixture transmitted by the workstation side line body 100 again. Synchronously, drive component 2 330 drives transfer component 2 370 to move, causing the slide rod 600 of transfer component 2 370 to slide along V-shaped section 2 312 to a position close to the return line 200; at this time, drive component 1 320 synchronously drives receiving component 2 360 to move, causing the slide rod 600 of receiving component 2 360 to slide along inclined section 2 3113 of slide rail 1 311, and its fixture carrier 500 fills the gap between transfer component 2 370 and return line 200 in an inclined trajectory. Transfer component 2 370 docks with return line 200 through receiving component 2 360, and transfers the processed fixture it receives to return line 200. During this process, the irregular section 452 of the control component 450 slides from the rotating section 4511 into the sliding section 4512 along the transition section 4513, restricting the rotation of the slide rod 600 and ensuring that the fixture carrier 500 maintains the docking posture. S5: Repeat steps S2-S4 to realize the position change of the fixture between the workstation side line 100, the transfer section 300, and the return line 200.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A workpiece transport circular production line for the assembly workshop, including: A workstation side line, wherein a fixture is transported on the workstation side line; The return line is parallel to the workstation side line and has the opposite transmission direction. Its characteristic is that it further includes: A transfer unit is provided at the end of the workstation side line and the return line. The transfer unit is used to transfer fixtures between the workstation side line and the return line to form a production line in which the fixtures can be circulated. The transfer unit includes: substrate; Drive component one and drive component two are arranged side by side on the substrate; The transmission is set on the drive assembly and the receiving assembly, the transfer assembly, and the receiving assembly are arranged in sequence. The transmission is set on the transfer component two on the drive component two; When the transfer unit transfers the fixture between the workstation side line and the return line, it changes between a first state and a second state. In the first state, the first transfer component connects to the return line to transfer the fixture, and the second transfer component connects to the station side line through the first receiving component to receive the fixture. In the second state, the first transfer component connects to the workstation side line to receive the fixture, and the second transfer component connects to the return line through the second receiving component to transfer the fixture.

2. The workpiece transport circular production line for assembly workshops according to claim 1, characterized in that, The receiving component one, the transfer component one, the receiving component two, and the transfer component two all include: A fixed block is connected to the lead screw for transmission, and a slide rail is provided on the fixed block; A fixture support that can be slidably mounted above a fixed block; And a sliding rod connected to the bottom of the fixture support, the sliding rod passing through the slide rail three to guide the relative sliding of the fixing block and the fixture support; The substrate is provided with a slide rail 1 and a V-shaped section 2. In the receiving component 1, the transfer component 1 and the receiving component 2, the slide rod passes through the slide rail 3 and extends into the slide rail 1. The slide rod in the transfer component 2 passes through the slide rail 3 and extends into the V-shaped section 2. The slide rail consists of the following components connected in sequence: Inclined segment one, corresponding to the receiving component one, when the receiving component one is driven by the driving component one, the fixture bearing component therein is inclined to approach or move away from the workstation side line body to avoid interference with the workstation side line body; V-shaped segment one corresponds to the first transfer component. When the first transfer component is driven by the first drive component, the fixture carrier therein is inclined to dock with the station side line or return line to avoid interference with the station side line or return line. And the second inclined section, corresponding to the second receiving component, when the second receiving component is driven by the first driving component, the fixture carrier therein is inclined to approach or move away from the return line body to avoid interference with the return line body; The second V-shaped segment corresponds to the second transfer component. When the second transfer component is driven by the second drive component, the fixture carrier therein is inclined to dock with the station side line or return line to avoid interference with the station side line or return line.

3. The workpiece transport circular production line for assembly workshops according to claim 2, characterized in that: In the first and second receiving components, the fixed block and the fixture support are relatively slidable through the first sliding component. The first sliding component includes a groove on the surface of the fixed block and a slide plate slidably disposed in the groove. The slide plate is connected to the fixture support. The cross-sections of the groove and the slide plate are formed into a T-shaped structure or a dovetail-shaped structure.

4. The workpiece transport circular production line for assembly workshops according to claim 3, characterized in that: The transfer unit also has a third state during the transition between the first and second states; In the third state, the slide rod in the first transfer assembly is located at the inflection point of the first V-shaped segment, and the slide rod in the second transfer assembly is located at the inflection point of the second V-shaped segment. The fixture carriers in both are perpendicular to the side line of the workstation and parallel to each other, so as to avoid interference between the fixture carriers in the first and second transfer assemblies.

5. The workpiece transport circular production line for assembly workshops according to claim 3, characterized in that: In the first and second transfer components, the fixed block and the fixture support are relatively slidable through the second sliding component. The second sliding component includes a second sliding groove connected to the third slide rail and a second sliding plate slidably disposed in the second sliding groove. The sliding rod is rotatably connected to the second sliding plate.

6. The workpiece transport circular production line for assembly workshops according to claim 5, characterized in that: In the first and second transfer components, the fixed block is also provided with a rotating component. The fixed block includes a toothed track connected to the third slide, a toothed block assembly arranged on the end wall of the toothed track, and a gear coaxially connected to the outside of the slide rod. When the slide rod slides along the track of the third slide, the gear meshes with the toothed block assembly to drive the fixture carrier to rotate synchronously.

7. The workpiece transport circular production line for assembly workshops according to claim 6, characterized in that: The fixed block is further provided with a control component, the control component including: Slide four is connected to slide three, and slide four includes a rotating section and a sliding section; The irregularly shaped segment formed on the slide rod is slidably disposed within the slide rail four, and the irregularly shaped segment has a major axis corresponding to the rotating segment and a minor axis corresponding to the sliding segment; When the irregular segment moves into the rotating segment, it is allowed to rotate; when the irregular segment moves into the sliding segment, it is allowed to slide so that the fixture support remains in a docked state.

8. The workpiece transport circular production line for assembly workshops according to claim 6, characterized in that: A transition section is also provided between the rotating section and the sliding section. The transition section is designed to be inclined to guide the irregular section to move from the sliding section to the rotating section.

9. The workpiece transport circular production line for assembly workshops according to claim 6, characterized in that: Both the first driving component and the second driving component include: Two spaced-apart support plates; Rotate the lead screw positioned between the two support plates; And a drive motor that is connected to the lead screw.

10. The method for circulating workpiece transport in a production line for an assembly workshop according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Fixture transport and processing preparation; Start the station side line and return line, and simultaneously start the drive assembly one and drive assembly two of the transfer unit. The transfer assembly one, receiving assembly one, and receiving assembly two are prepositioned to a non-interference position near the end of the station side line by the lead screw of drive assembly one, and the transfer assembly two is prepositioned to an initial position away from the transfer assembly one by the lead screw of drive assembly two. S2: Fixture transfer and acceptance control in the first state; The transfer department has switched to the first state: The drive component moves the transfer component, causing its fixture carrier to precisely dock with the return line in an inclined trajectory, transferring the pre-loaded processed fixture from the end of the workstation side line to the return line. Simultaneously, drive component two drives transfer component two to move, causing its fixture carrier to align with the side line of the workstation; at this time, drive component one simultaneously drives receiving component one to move and fill the gap between transfer component two and the side line of the workstation. Transfer component two connects with the side line of the workstation through receiving component one, receiving another batch of processed fixtures transmitted by the side line of the workstation. S3: Component avoidance switching in the third state; When transfer component one and transfer component two change positions between the return line and the workstation side line, the control transfer unit switches to the third state: Drive component one drives transfer component one to move along the lead screw, so that the slide of transfer component one slides to the inflection point of V-section one, and its fixture carrier rotates around the slide to a position perpendicular to the side line of the workstation. Synchronously, drive component two drives transfer component two to move along the lead screw, so that the slide rod of transfer component two slides to the inflection point of V-section two, and its fixture carrier rotates around the slide rod to a position perpendicular to the side line of the work station. The fixture carriers of transfer component one and transfer component two are parallel to each other to avoid interference when they move towards each other. During this process, the gear of the rotating component slides with the slide rod and meshes with the tooth block group of the tooth path, driving the fixture carrier to rotate synchronously; at the same time, the irregular section of the control component slides from the sliding section into the rotating section along the transition section, allowing the slide rod to drive the fixture carrier to rotate. S4: Fixture transfer and acceptance control in the second state; The transfer department switches to the second state: The drive component drives the transfer component to continue moving, so that its fixture carrier docks with the side line of the workstation, preparing the fixture to receive the transfer from the side line of the workstation again. Simultaneously, drive component two drives transfer component two to move, aligning its fixture carrier with the return line; at this time, drive component one synchronously drives receiving component two to move and fill the gap between transfer component two and the return line. Transfer component two connects with the return line through receiving component two, transferring the processed fixture it receives to the return line. During this process, the irregular section of the control component slides from the rotating section into the sliding section along the transition section, restricting the rotation of the slide rod and ensuring that the fixture carrier maintains the docking posture; S5: When the workstation side line continuously transports the jig to be transferred and the return line continuously transports the empty jig, steps S2-S4 are automatically repeated to realize the position change of the jig between the workstation side line, the transfer section and the return line.

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