Jacking and positioning mechanism for speed chain conveying line

Abstract

The utility model discloses a double-speed chain conveying line jacking and positioning mechanism which comprises a double-layer double-speed chain conveying line and a limiting support, and a lifting mechanism is arranged on one side of the limiting support. The lifting mechanism comprises a fixing seat, and a containing cavity is formed in the side, close to the limiting support, of the fixing seat. A lifting plate is arranged at the front end of the fixed seat and is in sliding connection with the fixed seat; a supporting arm is arranged on the side, away from the containing cavity, of the lifting plate, and a belt conveying line and a positioning assembly are arranged at the upper end of the supporting arm. Through the designed jacking positioning assembly, the telescopic air cylinder is used for driving the chain to transmit, then the lifting plate and the supporting plate on the supporting arm are driven to stably ascend and descend, and accurate positioning and stable jacking of the workpiece bearing tool plate are achieved; by means of the design, the accuracy of reworking operation is improved, and the stability of the workpieces in the conveying process is guaranteed. The problems of positioning and jacking of an existing speed chain conveying line in workpiece reworking operation are effectively solved, and the efficiency of an automatic production line is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-speed chain conveyor lines, in particular to a jacking and positioning mechanism for double-speed chain conveyor lines. Background Art

[0002] As a leader in assembly line equipment, the double-speed chain conveyor line, also known as the double-speed chain, ensures stability and durability in the production process with its gravity-flow conveying method, making it particularly suitable for large-scale, continuous product production. However, in the current automated production process, although the double-speed chain conveyor line performs well in object transportation, it still faces some challenges in the workpiece assembly or processing links.

[0003] Specifically, when workpieces are being assembled or processed on conveyor lines, omissions in the assembly process may occur, necessitating rework. Traditional rework methods rely on either inefficient manual handling or a reflow conveyor mechanism. However, existing reflow conveyors have significant deficiencies in positioning and lifting capabilities, preventing the workpiece support plate from achieving stable and precise positioning, thus impacting the efficiency and accuracy of rework operations.

[0004] In order to overcome the shortcomings of existing technologies and improve the efficiency and stability of workpiece rework operations, we urgently need a new type of double-speed chain conveyor line lifting and positioning mechanism to meet the actual needs of automated production lines. Summary of the Invention

[0005] The purpose of the utility model is to provide a lifting and positioning mechanism for a double-speed chain conveyor line to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting and positioning mechanism for a double-speed chain conveyor line, comprising a double-layer double-speed chain conveyor line, wherein both ends of the double-layer double-speed chain conveyor line are respectively provided with a limit bracket; the height of the limit bracket is equivalent to the height of the upper conveyor line of the double-layer double-speed chain conveyor line, wherein one side of the limit bracket is provided with a lifting mechanism; the lifting mechanism comprises a fixed seat, wherein the fixed seat is provided with a accommodating cavity on the side close to the limit bracket; two groups of linear guide rails are symmetrically arranged on both sides of the accommodating cavity, wherein the linear guide rails are fixedly connected to the fixed seat; a lifting plate is provided at the front end of the fixed seat, wherein two guide rail sliders are symmetrically provided on the lifting plate close to the side of the accommodating cavity; the guide rail slider is provided with a plurality of guide rails. It is placed on a linear guide rail, wherein the guide rail slider is slidably connected to the linear guide rail; a support arm is provided on the side of the lifting plate away from the accommodating cavity, wherein one end of the support arm is fixedly connected to the lifting plate, and the other end of the support arm extends into the limit bracket; a support plate is provided on the upper end of the support arm, wherein two groups of belt conveyor lines are symmetrically provided on both sides above the support plate, and the width of the belt conveyor line is equivalent to that of the double-speed chain conveyor line; a limiting support plate is provided between the two groups of belt conveyor lines, wherein the front and rear ends of the limiting support plate are respectively fixedly connected to the belt conveyor line; two groups of positioning components are provided above the support plate, wherein the two groups of positioning components are arranged between the two groups of belt conveyor lines, and the two groups of positioning components are respectively located on the sides of the limiting support plate.

[0007] Preferably, a telescopic cylinder is vertically provided in the accommodating chamber, wherein the lower end of the cylinder body of the telescopic cylinder is provided with a cylinder double-ear seat, and the cylinder double-ear seat is movably connected to the bottom end of the accommodating chamber through a pin shaft; a "Y"-shaped joint is provided at the top end of the piston rod of the telescopic cylinder, wherein the "Y"-shaped joint is provided with a driving sprocket; a first sprocket shaft is installed on the driving sprocket, wherein the two ends of the first sprocket shaft are respectively rotatably connected to the two side walls of the "Y"-shaped joint.

[0008] Preferably, a sprocket seat is provided on the inner wall of the top end of the accommodating cavity, wherein a driven sprocket is provided in the sprocket seat; a second sprocket shaft is mounted on the driven sprocket, wherein both ends of the second sprocket shaft are rotatably connected to the sprocket seats.

[0009] Preferably, a chain is provided between the driving sprocket and the driven sprocket, wherein the chain passes through the driving sprocket and the driven sprocket in sequence; a first fixed block is provided at the upper end of the chain, wherein the first fixed block is fixedly connected to the top of the accommodating cavity by a bolt; a second fixed block is provided at the lower end of the chain, wherein the second fixed block is fixedly connected to the lifting plate by a bolt.

[0010] Preferably, a first hydraulic buffer is provided at a position where the linear guide rail is flush with the upper end of the double-layer speed chain conveyor line, wherein the buffer head of the first hydraulic buffer abuts against the guide rail slider.

[0011] Preferably, a second hydraulic buffer is provided at the bottom end of the accommodating cavity, wherein the second hydraulic buffer extends toward one side of the lifting plate, and a buffer head of the second hydraulic buffer abuts against the lower end of the lifting plate.

[0012] Preferably, the belt conveyor line includes a bracket, wherein the lower end of the bracket is fixedly connected to the support plate; two pulleys are respectively provided at both ends above the bracket, wherein a transmission belt is provided between the two pulleys.

[0013] Preferably, the positioning assembly includes a lifting cylinder, wherein the lifting cylinder is arranged below the support plate; the cylinder body of the lifting cylinder is fixedly connected to the support plate, wherein the top end of the piston rod of the lifting cylinder passes through the support plate and is fixedly connected to the movable plate; a positioning pin is provided at one end above the movable plate, wherein a pad is provided at the other end above the movable plate.

[0014] Preferably, two groups of linear bearings are provided on the support plate, wherein the two groups of linear bearings are symmetrically arranged on both sides of the lifting cylinder; a guide shaft is provided in the linear bearing, wherein the lower end of the guide shaft is movably connected to the linear bearing, and the upper end of the guide shaft is fixedly connected to the movable plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention uses a designed lifting and positioning component, which uses a telescopic cylinder to drive the chain transmission, thereby driving the lifting plate and the support plate on the support arm to rise and fall smoothly, thereby achieving precise positioning and stable lifting of the workpiece support tooling plate; this design not only improves the accuracy of the rework operation, but also ensures the stability of the workpiece during the transportation process; the setting of the belt conveyor line matches the width of the double-layer speed chain conveyor line, and cooperates with the limit support plate and the positioning component to quickly move the workpiece to the designated position for rework after lifting and positioning, without the need for manual handling, which greatly improves the rework efficiency; the setting of the first hydraulic buffer and the second hydraulic buffer effectively alleviates the lifting process The impact force during the work is reduced, which protects the equipment structure and prolongs its service life. At the same time, it also ensures the safety of the workpiece during the lifting and lowering process. The positioning component adopts a lifting cylinder with a movable plate and a positioning pin design, which can be adjusted according to the size and shape of different workpieces, thereby improving the flexibility and compatibility of the equipment and being suitable for a variety of rework scenarios. The overall design is compact, and the components are firmly connected and easy to disassemble, which is convenient for daily maintenance and troubleshooting, reduces maintenance costs, and improves the reliability and durability of the equipment. It effectively solves the positioning and lifting problems of the existing double-speed chain conveyor line in the workpiece rework operation, improves the overall efficiency and stability of the automated production line, and is of great significance to improving the level of industrial automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2It is a structural diagram of the lifting mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the lifting mechanism of the utility model when viewed from above;

[0019] Figure 4 This is a structural diagram of the connection between the belt conveyor line and the positioning assembly of the utility model;

[0020] Figure 5 It is a schematic diagram of the bottom structure of the positioning component of the utility model.

[0021] Among them: 1. Double-layer double-speed chain conveyor line; 2. Limit bracket; 3. Lifting mechanism; 301. Fixed seat; 302. Accommodating cavity; 303. Linear guide rail; 304. Lifting plate; 305. Guide rail slider; 306. Support arm; 307. Support plate; 4. Belt conveyor line; 401. Bracket; 402. Pulley; 403. Transmission belt; 5. Limiting support plate; 6. Positioning assembly; 601. Lifting cylinder; 602. Moving plate; 603, locating pin; 604, spacer; 605, linear bearing; 606, guide shaft; 7, telescopic cylinder; 8, cylinder double-ear seat; 9, "Y"-shaped joint; 10, driving sprocket; 11, first sprocket shaft; 12, sprocket seat; 13, driven sprocket; 14, second sprocket shaft; 15, chain; 16, first fixed block; 17, second fixed block; 18, first hydraulic buffer; 19, second hydraulic buffer. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings.

[0023] Please refer to Figures 1 to 5 To achieve the above objectives, the present invention provides the following technical solutions:

[0024] A lifting and positioning mechanism for a double-speed chain conveyor line, comprising a double-layer double-speed chain conveyor line 1, wherein a limit bracket 2 is provided at each end of the double-layer double-speed chain conveyor line 1; the height of the limit bracket 2 is equivalent to the height of the upper end conveyor line of the double-layer double-speed chain conveyor line 1, wherein a lifting mechanism 3 is provided on one side of the limit bracket 2; the lifting mechanism 3 comprises a fixed seat 301, wherein the fixed seat 301 is provided with a accommodating cavity 302 on the side close to the limit bracket 2; two sets of linear guide rails 303 are symmetrically provided on both sides of the accommodating cavity 302, wherein the linear guide rails 303 are fixedly connected to the fixed seat 301; a lifting plate 304 is provided at the front end of the fixed seat 301, wherein the lifting plate 304 is symmetrically provided with two guide rail sliders 305 on the side close to the accommodating cavity 302; the guide rail sliders 305 are provided on the linear guide rail 303, wherein the guide rail The slider 305 is slidingly connected to the linear guide rail 303; a support arm 306 is provided on the side of the lifting plate 304 away from the accommodating chamber 302, wherein one end of the support arm 306 is fixedly connected to the lifting plate 304, and the other end of the support arm 306 extends into the limiting bracket 2; a support plate 307 is provided on the upper end of the support arm 306, wherein two groups of belt conveyor lines 4 are symmetrically provided on both sides above the support plate 307, and the width of the belt conveyor line 4 is equivalent to that of the double-layer speed chain conveyor line 1; a limiting support plate 5 is provided between the two groups of belt conveyor lines 4, wherein the front and rear ends of the limiting support plate 5 are respectively fixedly connected to the belt conveyor line 4; two groups of positioning components 6 are provided above the support plate 307, wherein the two groups of positioning components 6 are arranged between the two groups of belt conveyor lines 4, and the two groups of positioning components 6 are respectively located on the sides of the limiting support plate 5.

[0025] When a workpiece needs to be taken out from the upper transmission line of the double-layer double-speed chain conveyor line 1 for rework or other operations, the control system will issue an instruction; the lifting mechanism 3 starts to start, and the lifting plate 304 is lifted and lowered along the linear guide rail 303 by driving the telescopic cylinder 7; when the lifting plate 304 rises, the support arm 306 drives the support plate 307 and the belt conveyor line 4 and the positioning component 6 thereon to rise together; when the support plate 307 drives the belt conveyor line 4 to rise to the same height as the upper transmission line of the double-layer double-speed chain conveyor line 1, at this time, the belt conveyor line 4 starts, thereby transferring the workpiece from the upper transmission line of the double-layer double-speed chain conveyor line 1 to the limiting support plate 5, and the workpiece is lifted by the limiting support plate 5 set above the support plate 307; at the same time, the positioning component 6 also starts to work, and fixes the workpiece through the positioning pin 603. Prevent movement during the reflux transmission process; then, control the lifting mechanism 3 to drive the lifting plate 304 and the belt conveyor line 4 and positioning component 6 on it to move downward along the linear guide rail. When the belt conveyor line 4 drops to the same height as the lower conveyor line of the double-layer speed chain conveyor line 1, the belt conveyor line 4 starts to transfer the workpiece from the limiting pallet 5 to the lower conveyor line of the double-layer speed chain conveyor line 1; then the workpiece is refluxed to the position of the previous lifting mechanism 3 through the lower conveyor line of the double-layer speed chain conveyor line 1, and the workpiece to be reworked is moved to the processing position through the lifting mechanism 3 for rework operation; after the rework is completed, the positioning component 6 releases the workpiece, the belt conveyor line 4 starts again, and the workpiece is replaced on the upper conveyor line of the double-layer speed chain conveyor line 1, and continues to proceed along the upper conveyor line for subsequent processes.

[0026] The lifting and positioning mechanism can continuously repeat the above process, providing accurate lifting and positioning services for workpieces on the double-layer double-speed chain conveyor line 1, meeting the automation and efficiency requirements of the production line. It should be noted that the specific workflow and details may vary depending on the actual application scenario and the specific design of the equipment. For example, the method of driving the lifting mechanism 3, the control method of the belt conveyor line 4, and the specific structure of the positioning component 6 will all affect the performance and efficiency of the entire lifting and positioning mechanism.

[0027] Please refer to Figure 2 、 Figure 3As an embodiment of the present utility model, a telescopic cylinder 7 is vertically provided in the accommodating chamber 302, wherein the lower end of the cylinder body of the telescopic cylinder 7 is provided with a cylinder double-ear seat 8, and the cylinder double-ear seat 8 is movably connected to the bottom end of the accommodating chamber 302 through a pin shaft; a "Y"-shaped joint 9 is provided at the top end of the piston rod of the telescopic cylinder 7, wherein the "Y"-shaped joint 9 is provided with a driving sprocket 10; a first sprocket shaft 11 is installed on the driving sprocket 10, wherein the two ends of the first sprocket shaft 11 are respectively rotatably connected to the two side walls of the "Y"-shaped joint 9; a sprocket seat 12 is provided on the inner wall of the top end of the accommodating chamber 302, wherein a driven sprocket 13 is provided in the sprocket seat 12; a second sprocket shaft 14 is installed on the driven sprocket 13, wherein the two ends of the second sprocket shaft 14 are respectively rotatably connected to the sprocket seat 12.

[0028] In the above scheme, when it is necessary to lift the workpiece, the control system sends a signal to the telescopic cylinder 7, and the telescopic cylinder 7 starts to drive the piston rod to retract, thereby driving the "Y"-shaped joint 9 and the driving sprocket 10 thereon to move downward; since the driving sprocket 10 is connected to the chain 15, as the driving sprocket 10 moves downward, the chain 15 begins to tighten and passes around the driven sprocket 13, forming a closed-loop transmission system; when the driving sprocket 10 continues to descend, the driven sprocket 13 is driven to rotate through the chain 15, and since the two ends of the chain 15 are respectively connected to the driven sprocket 13, the driven sprocket 13 is rotated. The lifting plate 304 is connected to the top of the fixed seat 301, and the transmission of the chain 15 will be converted into the vertical movement of the lifting plate 304; so that the lifting plate 304 rises smoothly along the linear guide rail 303, and at the same time drives the support arm 306 and the support plate 307 to rise together; with the rise of the lifting plate 304 and the limit support plate 5 above it, the belt conveyor line 4 and the positioning component 6, when the support plate 307 drives the belt conveyor line 4 to rise to the height equivalent to the upper conveyor line of the double-layer speed chain conveyor line 1; at this time, the belt conveyor line 4 is started, which is used to The workpiece is transferred from the upper transmission line of the double-layer double-speed chain conveyor line 1 to the limit support plate 5, and the workpiece is lifted by the limit support plate 5 set above the support plate 307; then, the telescopic cylinder 7 is driven to control the piston rod to extend upward, thereby driving the "Y"-shaped joint 9 and the driving sprocket 10 thereon to rise. When the driving sprocket 10 continues to descend, the driven sprocket 13 is driven to rotate through the chain 15, so that the lifting plate 304 is steadily lowered along the linear guide rail 303, and at the same time, the support arm 306 and the support plate 307 are driven to slowly descend together, so that The workpiece is level with the lower transmission line of the double-layer double-speed chain conveyor line 1; the workpiece on the limiting pallet 5 is transferred to the lower transmission line of the double-layer double-speed chain conveyor line 1 by driving the belt conveyor line 4, and then the workpiece is returned to the position of the previous group of lifting mechanisms 3 through the lower transmission line of the double-layer double-speed chain conveyor line 1, and the workpiece to be reworked is moved to the processing position through the lifting mechanism 3 for rework operation; the reworked workpiece will be placed back on the upper transmission line of the double-layer double-speed chain conveyor line 1, ready for subsequent transportation or processing.

[0029] Please refer to Figure 2 、 Figure 3 As an embodiment of the present utility model, a chain 15 is provided between the driving sprocket 10 and the driven sprocket 13, wherein the chain 15 passes through the driving sprocket 10 and the driven sprocket 13 in sequence; a first fixing block 16 is provided at the upper end of the chain 15, wherein the first fixing block 16 is fixedly connected to the top of the accommodating cavity 302 by a bolt; a second fixing block 17 is provided at the lower end of the chain 15, wherein the second fixing block 17 is fixedly connected to the lifting plate 304 by a bolt.

[0030] In the above-described scheme, the chain 15 passes through the driving sprocket 10 and the driven sprocket 13 in sequence to form a closed-loop transmission system; the upper end of the chain 15 is fixedly connected to the top of the accommodating cavity 302 through the first fixing block 16 to ensure that the chain 15 will not fall off or deflect during the transmission process; the lower end of the chain 15 is fixedly connected to the lifting plate 304 through the second fixing block 17, so that the transmission of the chain 15 can be converted into the vertical movement of the lifting plate 304; when the workpiece needs to be lifted, the control system sends a signal to the telescopic cylinder 7, and the telescopic cylinder 7 begins to retract , the piston rod of the telescopic cylinder 7 is retracted, pulling the "Y"-shaped joint 9 and the driving sprocket 10 thereon to move downward; since the upper end of the chain 15 is fixed by the first fixed block 16, and the lower end is connected to the lifting plate 304, as the driving sprocket 10 descends, the chain 15 begins to tighten and bypasses the driven sprocket 13; the transmission of the chain 15 causes the second fixed block 17 and the lifting plate 304 connected thereto to move upward along the linear guide rail 303; as the lifting plate 304 rises, the support arm 306 and the support plate 307 also rise, thereby making the support The belt conveyor line 4 arranged above the plate 307 is level with the upper layer of the double-layer double-speed chain conveyor line 1; then the belt conveyor line 4 is driven to transfer the workpiece on the upper layer of the double-layer double-speed chain conveyor line 1 to the top of the limiting support plate 5. When the limiting support plate 5 completely lifts the workpiece, the workpiece is separated from the upper layer of the double-layer double-speed chain conveyor line 1; then the belt conveyor line 4 and the positioning component 6 start to work to fine-tune and position the workpiece; then the telescopic cylinder 7 is driven to control the piston rod to extend upward, thereby driving the "Y"-shaped joint 9 and the active sprocket 10 thereon to rise. When the active sprocket 10 continues to move downward, the piston rod 2 is pulled upward, and the "Y"-shaped joint 9 and the active sprocket 10 thereon are pulled upward. When descending, the chain 15 drives the driven sprocket 13 to rotate, so that the lifting plate 304 descends smoothly along the linear guide rail 303, and at the same time drives the support arm 306 and the support plate 307 to descend slowly, so that the workpiece is level with the lower transmission line of the double-layer double-speed chain conveyor line 1; the workpiece on the limiting pallet 5 is transferred to the lower transmission line of the double-layer double-speed chain conveyor line 1 through the belt conveyor line 4, and returned to the corresponding process for rework; the reworked workpiece will be placed back on the double-layer double-speed chain conveyor line 1, ready for subsequent transportation or processing.

[0031] Please refer to Figure 2 、 Figure 3As an embodiment of the present invention, a first hydraulic buffer 18 is provided at a position where the linear guide rail 303 is level with the upper end of the double-layer speed chain conveyor line 1, wherein the buffer head of the first hydraulic buffer 18 abuts against the guide rail slider 305; a second hydraulic buffer 19 is provided at the bottom end of the accommodating cavity 302, wherein the second hydraulic buffer 19 extends toward one side of the lifting plate 304, and the buffer head of the second hydraulic buffer 19 abuts against the lower end of the lifting plate 304.

[0032] When the lifting plate 304 is lifted up, the guide rail 305 is lifted up and the lifting plate 304 is lifted up, so that the lifting plate 304 can move up and down. The hydraulic cylinder and damping system absorb the kinetic energy of the lifting plate 304 and the upper components, achieving smooth deceleration and stopping, and preventing impact and vibration caused by inertia; when the workpiece is reflowed and reworked, the telescopic cylinder 7 causes the piston rod to extend, thereby pushing the active sprocket 10 to rise, and then driving the lifting plate 304 to descend along the linear guide rail 303 through the chain 15; as the lifting plate 304 descends, the support plate 307 and the workpiece also descend accordingly; when the lifting plate 304 descends to near the bottom of the accommodating chamber 302, the lower end of the lifting plate 304 contacts the buffer head of the second hydraulic buffer 19; the second hydraulic buffer 19 starts to work, and also absorbs the kinetic energy of the lifting plate 304 and the upper components through its internal hydraulic cylinder and damping system, achieving smooth deceleration and stopping; under the action of the second hydraulic buffer 19, the workpiece is made level with the lower transmission line of the double-layer speed chain conveyor line 1, which is convenient for subsequent reflow operations.

[0033] See also Figure 4 As an embodiment of the present invention, the belt conveyor line 4 includes a bracket 401, wherein the lower end of the bracket 401 is fixedly connected to the support plate 307; two pulleys 402 are respectively provided at both ends above the bracket 401, wherein a transmission belt 403 is provided between the two pulleys 402.

[0034] In the above scheme, in the initial state, the belt conveyor line 4 is in a stationary state, and the transmission belt 403 is hung between the two pulleys 402; the bracket 401 serves as the supporting structure of the belt conveyor line 4, and its lower end is firmly connected to the support plate 307 by bolts or other fixing methods; the support plate 307 is connected to the lifting plate 304, and the entire belt conveyor line 4 system moves up and down with the lifting of the lifting plate 304; when it is necessary to lift the workpiece, the telescopic cylinder 7 contracts, pulling the active sprocket 10 down, and then driving the lifting plate 304 to rise along the linear guide rail 303 through the chain 15; the lifting plate 307 is connected to the lifting plate 304, and the entire belt conveyor line 4 system moves up and down with the lifting of the lifting plate 304; when it is necessary to lift the workpiece, the telescopic cylinder 7 contracts, pulling the active sprocket 10 down, and then driving the lifting plate 304 to rise along the linear guide rail 303 through the chain 15; 04 rises, and the support plate 307 and the bracket 401 thereon and the belt conveyor line 4 also rise accordingly; when the support plate 307 drives the belt conveyor line 4 to rise to the same level as the upper transmission line of the double-layer double-speed chain conveyor line 1, the belt conveyor line 4 is used to transfer the workpiece from the upper transmission line of the double-layer double-speed chain conveyor line 1 to the limiting support plate 5. After the belt conveyor line 4 transports the workpiece to the specified position, the positioning component 6 can be used to fine-tune the workpiece to ensure its accurate position; the speed and direction of the belt conveyor line 4 can be achieved by adjusting the speed and direction of the drive motor to meet different production needs.

[0035] Please refer to Figure 4 、 Figure 5 As an embodiment of the present invention, the positioning assembly 6 includes a lifting cylinder 601, wherein the lifting cylinder 601 is arranged below the support plate 307; the cylinder body of the lifting cylinder 601 is fixedly connected to the support plate 307, wherein the top end of the piston rod of the lifting cylinder 601 passes through the support plate 307 and is fixedly connected to the movable plate 602; a positioning pin 603 is provided at one end above the movable plate 602, wherein a pad 604 is provided at the other end above the movable plate 602; two groups of linear bearings 605 are provided on the support plate 307, wherein the two groups of linear bearings 605 are symmetrically arranged on both sides of the lifting cylinder 601; a guide shaft 606 is provided in the linear bearing 605, wherein the lower end of the guide shaft 606 is movably connected to the linear bearing 605, and the upper end of the guide shaft 606 is fixedly connected to the movable plate 602.

[0036] When the workpiece is moved to the limit support plate 5 by the belt conveyor 4, the lifting cylinder 601 starts to work, and the piston rod of the lifting cylinder 601 extends to push the movable plate 602 and the positioning pin 603 and the cushion block 604 above it to move upward. As the movable plate 602 rises, the guide shaft 606 slides in the linear bearing 605, ensuring the smooth and accurate movement of the movable plate 602; when the movable plate 602 rises to the predetermined position, the positioning pin 603 contacts the positioning hole or positioning surface on the workpiece, realizing the precise positioning of the workpiece; at the same time, the pad 604 also plays the role of supporting and stabilizing the workpiece, preventing the workpiece from moving or tilting during the positioning process; at this time, the belt conveyor line 4 can stop working, and the operator can perform rework or other operations above the support plate 307 or next to the belt conveyor line 4; if it is necessary to fine-tune the workpiece, the height of the movable plate 602 can be changed by adjusting the extension length of the piston rod of the jacking cylinder 601; this will cause the position of the positioning pin 603 and the pad 604 relative to the workpiece to change, thereby realizing fine-tuning of the workpiece; after the fine-tuning is completed, the position of the workpiece can be re-fixed to ensure that it meets the requirements of subsequent processing or assembly.

[0037] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A lifting and positioning mechanism for a double-speed chain conveyor line, comprising a double-layer double-speed chain conveyor line (1), wherein both ends of the double-layer double-speed chain conveyor line (1) are respectively provided with a limit bracket (2); characterized in that, The height of the limiting bracket (2) is equivalent to the height of the upper end conveying line of the double-layer double-speed chain conveying line (1), wherein a lifting mechanism (3) is provided on one side of the limiting bracket (2); the lifting mechanism (3) includes a fixed seat (301), wherein the fixed seat (301) is provided with a receiving cavity (302) on one side close to the limiting bracket (2); two groups of linear guide rails (303) are symmetrically provided on both sides of the receiving cavity (302), wherein the linear guide rails (303) are fixedly connected to the fixed seat (301); a lifting plate (304) is provided at the front end of the fixed seat (301), wherein two guide rail sliders (305) are symmetrically provided on one side of the lifting plate (304) close to the receiving cavity (302); the guide rail sliders (305) are provided on the linear guide rails (303), wherein the guide rail sliders (305) are slidably connected to the linear guide rails (303); the lifting plate ( A support arm (306) is provided on the side away from the accommodating chamber (302), wherein one end of the support arm (306) is fixedly connected to the lifting plate (304), and the other end of the support arm (306) extends into the limiting bracket (2); a support plate (307) is provided on the upper end of the support arm (306), wherein two groups of belt conveyor lines (4) are symmetrically provided on both sides above the support plate (307), and the width of the belt conveyor lines (4) is equivalent to that of the double-layer speed chain conveyor line (1); a limiting support plate (5) is provided between the two groups of belt conveyor lines (4), wherein the front and rear ends of the limiting support plate (5) are respectively fixedly connected to the belt conveyor line (4); two groups of positioning components (6) are provided above the support plate (307), wherein the two groups of positioning components (6) are arranged between the two groups of belt conveyor lines (4), and the two groups of positioning components (6) are respectively located on the sides of the limiting support plate (5).

2. A lifting and positioning mechanism for a double-speed chain conveyor line according to claim 1, characterized in that: A telescopic cylinder (7) is vertically arranged in the accommodating chamber (302), wherein the lower end of the cylinder body of the telescopic cylinder (7) is provided with a cylinder double-ear seat (8), and the cylinder double-ear seat (8) is movably connected to the bottom end of the accommodating chamber (302) through a pin shaft; a "Y"-shaped joint (9) is provided at the top end of the piston rod of the telescopic cylinder (7), wherein the "Y"-shaped joint (9) is provided with a driving sprocket (10); a first sprocket shaft (11) is installed on the driving sprocket (10), wherein the two ends of the first sprocket shaft (11) are respectively rotatably connected to the two side walls of the "Y"-shaped joint (9); a sprocket seat (12) is provided on the inner wall of the top end of the accommodating chamber (302), wherein a driven sprocket (13) is arranged in the sprocket seat (12); a second sprocket shaft (14) is installed on the driven sprocket (13), wherein the two ends of the second sprocket shaft (14) are respectively rotatably connected to the sprocket seat (12).

3. A lifting and positioning mechanism for a double-speed chain conveyor line according to claim 2, characterized in that: A chain (15) is provided between the driving sprocket (10) and the driven sprocket (13), wherein the chain (15) passes through the driving sprocket (10) and the driven sprocket (13) in sequence; a first fixing block (16) is provided at the upper end of the chain (15), wherein the first fixing block (16) is fixedly connected to the top of the accommodating cavity (302) by means of bolts; a second fixing block (17) is provided at the lower end of the chain (15), wherein the second fixing block (17) is fixedly connected to the lifting plate (304) by means of bolts.

4. The lifting and positioning mechanism for a double-speed chain conveyor line according to claim 1, characterized in that: A first hydraulic buffer (18) is provided at a position where the linear guide rail (303) is flush with the upper end of the double-layer double-speed chain conveyor line (1), wherein the buffer head of the first hydraulic buffer (18) abuts against the guide rail slider (305).

5. The lifting and positioning mechanism for a double-speed chain conveyor line according to claim 1, characterized in that: A second hydraulic buffer (19) is provided at the bottom end of the accommodating cavity (302), wherein the second hydraulic buffer (19) extends toward one side of the lifting plate (304), and the buffer head of the second hydraulic buffer (19) abuts against the lower end of the lifting plate (304).

6. The lifting and positioning mechanism for a double-speed chain conveyor line according to claim 1, characterized in that: The belt conveyor line (4) comprises a bracket (401), wherein the lower end of the bracket (401) is fixedly connected to the support plate (307); two pulleys (402) are respectively provided at the upper ends of the bracket (401), wherein a transmission belt (403) is provided between the two pulleys (402).

7. The lifting and positioning mechanism for a double-speed chain conveyor line according to claim 1, characterized in that: The positioning assembly (6) comprises a lifting cylinder (601), wherein the lifting cylinder (601) is arranged below the support plate (307); the cylinder body of the lifting cylinder (601) is fixedly connected to the support plate (307), wherein the top end of the piston rod of the lifting cylinder (601) passes through the support plate (307) and is fixedly connected to the movable plate (602); a positioning pin (603) is provided at one end above the movable plate (602), wherein a pad (604) is provided at the other end above the movable plate (602).

8. The lifting and positioning mechanism for a double-speed chain conveyor line according to claim 7, characterized in that: Two groups of linear bearings (605) are provided on the support plate (307), wherein the two groups of linear bearings (605) are symmetrically arranged on both sides of the lifting cylinder (601); a guide shaft (606) is provided in the linear bearing (605), wherein the lower end of the guide shaft (606) is movably connected to the linear bearing (605), and the upper end of the guide shaft (606) is fixedly connected to the movable plate (602).

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