Manually-operated and automatically-operated turnover positioning tool and multiple-speed chain assembly line

Abstract

The utility model discloses a hand -self -turning positioning frock and multiple speed chain assembly line, hand -self -turning positioning frock, not only can through hand rocker lower press one end of lever, make sector gear and follow -up gear separate, and can through the machine control end of outside equipment lifting lever, make sector gear and follow -up gear separate, to be able to through hand and machine two ways realize the unlocking control of turning positioning frame rotation, make turning positioning frame can rotate at will, simultaneously, as long as do not exert external force to lever, lifting guide rod can rise under the action of elastic component, make sector gear and follow -up gear keep meshing, lock turning positioning frame, to make multiple speed chain assembly line when unlocking drive mechanism failure, operating personnel can through hand rocker lower press one end of lever, make sector gear and follow -up gear separate, realize the rotation unlocking function of turning positioning frame, avoid multiple speed chain assembly line and stop accident.

Description

Technical Field

[0001] This utility model relates to the technical field of double-speed chain assembly lines, specifically to a manual / automatic integrated flip positioning fixture and a double-speed chain assembly line. Background Technology

[0002] To improve assembly efficiency and achieve efficient assembly line operations, more and more factories are introducing double-speed chain assembly lines. When assembling products with many assembly processes, it is often necessary to frequently adjust the posture of the workpieces to be assembled by flipping them. Therefore, flipping positioning fixtures are often used to position the workpieces to be assembled.

[0003] When the orientation of the workpiece to be assembled needs to be adjusted, the flipping positioning fixture first needs to unlock the flipping mechanism before the workpiece can be flipped and adjusted. After it is in place, the fixture is locked to keep the workpiece in the set orientation.

[0004] However, existing flipping positioning fixtures only have one unlocking method: manual unlocking or machine unlocking (motor, cylinder, or hydraulic cylinder), which leads to the following problems:

[0005] 1. If only manual unlocking is available, the operator needs to control both the unlocking mechanism and the rotation of the tooling.

[0006] 2. If only the machine unlocking function is available, and the position of the flip positioning fixture on the double-speed chain assembly line is not accurate, the machine (motor, cylinder, or hydraulic cylinder) will be unable to unlock the flip positioning fixture. The double-speed chain assembly line must be restarted to accurately adjust the flip positioning fixture to the set position before the flip positioning fixture can be unlocked.

[0007] Solving these problems is now a top priority. Utility Model Content

[0008] In view of this, the present invention provides a manual-automatic integrated flip positioning fixture and a double-speed chain assembly line.

[0009] The technical solution is as follows:

[0010] The first aspect of this application relates to a manual / automatic flip-positioning fixture, comprising a fixture base and a flip-positioning frame. Both ends of the fixture base along its length are fixedly mounted with upwardly extending positioning frame supports. Both ends of the flip-positioning frame along its length are rotatably mounted on corresponding positioning frame supports via rotating shafts. The flip-positioning frame is provided with a workpiece positioning and locking assembly capable of fixing a workpiece thereon. An operating turntable and a follower gear, both rotating synchronously with the turntable, are mounted on one of the rotating shafts. A lifting guide rod capable of rising and falling along the follower gear is mounted on the positioning frame support adjacent to the follower gear. The lifting guide rod is located directly below the follower gear, and its upper end is fixed... A sector gear adapted to a follower gear is connected to the lever. The lower end of the lever is hinged to a lever via a first hinge, and the middle part of the lever is hinged to a tooling base via a second hinge. A hand crank is fixedly connected to one end of the lever. The first hinge is located between the second hinge and the hand crank. The other end of the lever is a machine control end. An elastic component is provided between the lifting guide rod and the adjacent positioning frame bracket to give the lifting guide rod an upward trend. When the hand crank is pressed down or the machine control end is pushed up, the sector gear separates from the follower gear. When the hand crank and the machine control end are released, the lifting guide rod rises under the action of the elastic component so that the sector gear and the follower gear remain engaged.

[0011] The above-mentioned manual / automatic integrated flipping and positioning fixture can not only separate the sector gear from the follower gear by pressing down one end of the lever with a hand crank, but also separate the sector gear from the follower gear by raising the lever with a machine control end on an external device. This allows for unlocking control of the flipping and positioning frame's rotation through both manual and machine methods, enabling the flipping and positioning frame to rotate arbitrarily. At the same time, as long as no external force is applied to the lever, the lifting guide rod can rise under the action of the elastic component, keeping the sector gear and follower gear engaged and locking the flipping and positioning frame. The operation is simple, stable, and reliable.

[0012] The second aspect of this application relates to a double-speed chain assembly line, including a first line-changing module, a second line-changing module, a first double-speed chain conveyor line and a second double-speed chain conveyor line that are parallel to each other, and the aforementioned manual / automatic integrated flip-positioning fixture. Both the first and second double-speed chain conveyor lines can transfer the manual / automatic integrated flip-positioning fixture located thereon towards the unloading end. The first line-changing module can transfer the manual / automatic integrated flip-positioning fixture located at the unloading end of the first double-speed chain conveyor line to the loading end of the second double-speed chain conveyor line. The second line-changing module can transfer the manual / automatic integrated flip-positioning fixture located at the unloading end of the second double-speed chain conveyor line to the loading end of the first double-speed chain conveyor line. Thus, the first double-speed chain conveyor line, the first line-changing module, the second double-speed chain conveyor line, and the second line-changing module together constitute a circular circulating conveyor line. The circular circulating conveyor line is equipped with multiple unlocking drive mechanisms adapted to a machine control terminal. When the machine control terminal of the manual / automatic integrated flip-positioning fixture is located above any unlocking drive mechanism, the unlocking drive mechanism can push against the machine control terminal.

[0013] The above-mentioned double-speed chain assembly line not only possesses all the advantages of the manual-automatic flip positioning fixture, but also enables the rotation unlocking function of the flip positioning frame by unlocking the drive mechanism to the upper end of the machine control terminal. Furthermore, in the event of a malfunction in the unlocking drive mechanism, the operator can press down one end of the lever with the hand crank to separate the sector gear from the follower gear, thereby unlocking the rotation of the flip positioning frame and preventing downtime accidents on the double-speed chain assembly line. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a high-speed chain assembly line from one perspective.

[0015] Figure 2 This is a structural schematic diagram of a double-speed chain assembly line from another perspective.

[0016] Figure 3 This is a schematic diagram of the structure of a visual inspection mechanism;

[0017] Figure 4 A schematic diagram of the manual / automatic flip positioning fixture;

[0018] Figure 5 A schematic diagram showing the sector gear and follower gear in meshing state after the protective cover of the manual / automatic flip positioning fixture has been removed.

[0019] Figure 6 This is a schematic diagram showing the sector gear and follower gear in a separated state after the protective cover of the manual / automatic flip positioning fixture has been removed. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0021] Example 1:

[0022] like Figure 2 as well as Figures 4-6 As shown, a manual / automatic integrated flip positioning fixture mainly includes a fixture base 1 and a flip positioning frame 3 that can rotate relative to the fixture base 1.

[0023] Specifically, both the tooling base 1 and the flip positioning frame 3 are rectangular structures. Both ends of the tooling base 1 along its length are fixedly installed with upwardly extending positioning frame brackets 2. Both ends of the flip positioning frame 3 along its length are rotatably mounted on the corresponding positioning frame brackets 2 via rotating shafts 4. In this embodiment, the inner ends of the two rotating shafts 4 are fixedly connected to the flip positioning frame 3, and the outer ends of the two rotating shafts 4 are mounted on the corresponding positioning frame brackets 2 via bearings. This design is simple, reliable, and easy to assemble.

[0024] The flip positioning frame 3 is equipped with a workpiece positioning and locking assembly 5 for fixing the workpiece thereon. Specifically, the workpiece positioning and locking assembly 5 includes two mounting plates 5a, which are fixedly mounted opposite each other at both ends of the flip positioning frame 3 along its length. Furthermore, several positioning elements 5b and at least one quick clamp 5c are fixedly mounted on the same side surface of each of the two mounting plates 5a. Each positioning element 5b is used to position the workpiece, and each quick clamp 5c can fix the workpiece onto its respective positioning element 5b. When it is necessary to fix the workpiece, the workpiece is first positioned on its respective positioning element 5b, and then the quick clamps 5c are locked, thereby locking the workpiece onto its respective positioning element 5b. When it is necessary to remove the workpiece from the flip positioning frame 3, all the quick clamps 5c are first unlocked, and then the workpiece can be removed from its respective positioning element 5b.

[0025] In this embodiment, an operating turntable 6 and a follower gear 7, both rotating synchronously with the rotating shaft 4, are mounted on one of the rotating shafts 4. The operating turntable 6 and the follower gear 7 are both fixedly mounted on the rotating shaft 4. A lifting guide rod 8, capable of rising and falling along the positioning frame bracket 2 adjacent to the follower gear 7, is installed on the positioning frame bracket 2. The lifting guide rod 8 is located directly below the follower gear 7. An elastic component 14 is provided between the lifting guide rod 8 and the adjacent positioning frame bracket 2 to give the lifting guide rod 8 an upward trend. A sector gear 9, adapted to the follower gear 7, is fixedly connected to the upper end of the lifting guide rod 8. The sector gear 9 is located directly below the follower gear 7. The lower end of the lifting guide rod 8 is hinged to a lever 11 via a first hinge 10. The middle part of the lever 11 is hinged to a tooling base 1 via a second hinge 12. A hand crank 13 is fixedly connected to one end of the lever 11. The first hinge 10 is located between the second hinge 12 and the hand crank 13. The other end of the lever 11 is the machine control terminal 11a.

[0026] Therefore, when it is necessary to adjust the angle of the flip positioning frame 3, either press down the hand crank 13 or push up the machine control end 11a to separate the sector gear 9 from the follower gear 7. At this time, the flip positioning frame 3 can be rotated synchronously with it by rotating the operating turntable 6.

[0027] When it is necessary to lock the flip angle of the flip positioning frame 3, when the hand crank 13 and the machine control end 11a are released, that is, the lever 11 is not subjected to external force, and the lifting guide rod 8 rises under the action of the elastic component 14, so that the sector gear 9 and the follower gear 7 remain engaged.

[0028] Furthermore, the follower gear 7 and the operating turntable 6 are located on the inner and outer sides of the corresponding positioning frame bracket 2, respectively, so as to facilitate the operation and control of the operating turntable 6.

[0029] Furthermore, a protective cover 15 is installed on the positioning frame bracket 2 adjacent to the follower gear 7. The follower gear 7, sector gear 9, and elastic component 14 are all located within the protective cover 15, and the lower end of the lifting guide rod 8 extends out of the protective cover 15. Through the above design, the protective cover 15 can shield and protect the internal mechanism.

[0030] Furthermore, on the side of the two positioning frame supports 2 that are far apart from each other, there is also an outwardly protruding anti-collision block 30. The anti-collision block 30 is made of rubber material, so that it can play a buffering and protective role when adjacent manual and automatic flip positioning fixtures collide, and prevent the flip positioning frame 3 from deforming.

[0031] Furthermore, the elastic component 14 includes a spring support seat 14b fixedly installed on the lifting guide rod 8 and a compression spring 14a fitted on the lifting guide rod 8. A spring base 2a located directly below the spring support seat 14b is fixedly installed on the positioning frame bracket 2 adjacent to the elastic component 14. The upper and lower ends of the compression spring 14a are elastically supported on the spring support seat 14b and the spring base 2a respectively, which is stable and reliable.

[0032] Example 2:

[0033] Please see Figures 1-6 A double-speed chain assembly line includes a first line-changing module 18, a second line-changing module 19, a first double-speed chain conveyor line 16, a second double-speed chain conveyor line 17, and at least one manual / automatic integrated flip-and-position tooling according to embodiment 1. The first double-speed chain conveyor line 16 and the second double-speed chain conveyor line 17 are arranged in parallel, and both the first double-speed chain conveyor line 16 and the second double-speed chain conveyor line 17 are located between the first line-changing module 18 and the second line-changing module 19, thereby forming a ring layout.

[0034] The first and second double-speed chain conveyor lines 16 and 17 can both transfer the manual / automatic flip-positioning fixtures located on them towards the unloading end. The first line-changing module 18 can transfer the manual / automatic flip-positioning fixtures located at the unloading end of the first double-speed chain conveyor line 16 to the loading end of the second double-speed chain conveyor line 17. The second line-changing module 19 can transfer the manual / automatic flip-positioning fixtures located at the unloading end of the second double-speed chain conveyor line 17 to the loading end of the first double-speed chain conveyor line 16. Thus, the first double-speed chain conveyor line 16, the first line-changing module 18, the second double-speed chain conveyor line 17, and the second line-changing module 19 together form a circular conveyor line. Therefore, each manual / automatic flip-positioning fixture can circulate repeatedly on the circular conveyor line, realizing assembly line operation.

[0035] In this embodiment, multiple unlocking drive mechanisms 33 adapted to the machine control terminal 11a are provided on the circular conveyor line. Therefore, when the machine control terminal 11a of the manual-automatic flip positioning fixture is located above any unlocking drive mechanism 33, the unlocking drive mechanism 33 can push against the machine control terminal 11a, causing the sector gear 9 to separate from the follower gear 7, thereby realizing the rotation unlocking function of the flip positioning frame 3.

[0036] Furthermore, when the unlocking drive mechanism malfunctions, the operator can press down one end of the lever 11 with the hand crank 13 to separate the sector gear 9 from the follower gear 7, thereby realizing the rotation unlocking function of the flip positioning frame 3. This allows the malfunctioning unlocking drive mechanism to be repaired after the assembly work is completed, thus avoiding downtime accidents on the double-speed chain assembly line.

[0037] Please see Figure 2 Each unlocking drive mechanism 33 includes an unlocking cylinder 33b vertically mounted on the first double-speed chain conveyor line 16 or the second double-speed chain conveyor line 17 via a cylinder bracket 33a. The piston rod of the unlocking cylinder 33b extends upward, and a large push plate 33c for pushing the machine control end 11a is fixedly connected to the upper end of the unlocking cylinder 33b. The large push plate 33c is very large and can easily contact the machine control end 11a, thereby reducing the positioning accuracy requirements of the double-speed chain assembly line for the manual-automatic flip positioning fixture and reducing the possibility that the unlocking drive mechanism cannot touch the machine control end 11a.

[0038] Please see Figure 1 and Figure 2The first line-changing module 18 includes a first electric translation module 18a arranged in a horizontal direction and a first docking double-speed chain 18b mounted on the slide of the first electric translation module 18a. The first docking double-speed chain 18b is adapted to the first double-speed chain conveyor line 16 and the second double-speed chain conveyor line 17. Furthermore, the first docking double-speed chain 18b can dock with the first double-speed chain conveyor line 16 or the second double-speed chain conveyor line 17 under the drive of the first electric translation module 18a.

[0039] When the first docking double-speed chain 18b docks with the unloading end of the first double-speed chain conveyor line 16, the manual-automatic flip-positioning fixture located at the unloading end of the first double-speed chain conveyor line 16 can be transferred to the first docking double-speed chain 18b. When the first docking double-speed chain 18b docks with the loading end of the second double-speed chain conveyor line 17, the manual-automatic flip-positioning fixture located on the first docking double-speed chain 18b can be transferred to the loading end of the second double-speed chain conveyor line 17.

[0040] The second line-changing module 19 includes a second electric translation module 19a arranged in a horizontal direction and a second docking double-speed chain 19b mounted on the slide of the second electric translation module 19a. The second docking double-speed chain 19b is adapted to the first double-speed chain conveyor line 16 and the second double-speed chain conveyor line 17. Furthermore, the second docking double-speed chain 19b can dock with the first double-speed chain conveyor line 16 or the second double-speed chain conveyor line 17 under the drive of the second electric translation module 19a.

[0041] When the second docking double speed chain 19b docks with the unloading end of the second double speed chain conveyor line 17, the manual and automatic integrated flip positioning fixture located at the unloading end of the second double speed chain conveyor line 17 can be transferred to the second docking double speed chain 19b. When the second docking double speed chain 19b docks with the loading end of the first double speed chain conveyor line 16, the manual and automatic integrated flip positioning fixture located on the second docking double speed chain 19b can be transferred to the loading end of the first double speed chain conveyor line 16.

[0042] The first double-speed chain conveyor line 16 has N+1 assembly stations 20 arranged sequentially from its loading end to its unloading end, where N is a positive integer greater than or equal to 1. The second double-speed chain conveyor line 17 has N assembly stations 20 and one vision inspection station 21 arranged sequentially from its loading end to its unloading end. The first line-changing module 18 can transfer the manual / automatic flip-positioning fixture located at the unloading end of the first double-speed chain conveyor line 16 to the assembly station 20 located at the loading end of the second double-speed chain conveyor line 17. The second line-changing module 19 can transfer the manual / automatic flip-positioning fixture located at the vision inspection station 21 to the assembly station 20 located at the loading end of the first double-speed chain conveyor line 16. The vision inspection station 21 is designed as the last station to ensure that all workpieces are inspected by the vision inspection station 21 before leaving the line, facilitating the classification and unqualified workpieces before they leave the line.

[0043] Please see Figure 3 Above the vision inspection station 21, a vision mounting bracket 28 and at least one vision inspection mechanism 29 arranged along the length of the second-speed chain conveyor line 17 are installed. Each vision inspection mechanism 29 includes an electrically operated lifting module 29a, adjustable along the width of the second-speed chain conveyor line 17 and mounted on the vision mounting bracket 28. Specifically, the vision mounting bracket 28 is a frame structure, and the electrically operated lifting module 29a can be manually adjusted in its mounting position on the vision mounting bracket 28. Simultaneously, each of the electrically operated lifting modules 29a has a downward-facing vision camera 29b mounted on its slide via a camera bracket 29c. Therefore, the electrically operated lifting module 29a can control the height of the vision camera 29b to ensure clearer images or videos are obtained.

[0044] Furthermore, each end of the vision mounting bracket 28 is equipped with a positioning detection mechanism 31. This positioning detection mechanism 31 includes a sensor lifting module 31a, which is adjustable along the width of the second-speed conveyor line 17 and mounted on the vision mounting bracket 28. Specifically, the sensor lifting module 31a can be manually adjusted in position on the vision mounting bracket 28. Simultaneously, each slide of the sensor lifting module 31a is equipped with a downward-facing workpiece positioning detection sensor 31b mounted on a sensor bracket 31c. Therefore, the sensor lifting module 31a can control the height of the workpiece positioning detection sensor 31b to ensure accurate detection of workpiece positioning. When the workpiece positioning detection sensor 31b detects that the workpiece is in position, it transmits the information to the industrial control computer, which then controls the vision camera 29b to capture an image of the workpiece.

[0045] Furthermore, several protective baffles 32 are provided on the outer side of the vision mounting bracket 28. By providing protective baffles 32, the vision inspection mechanism 29 and the positioning inspection mechanism 31 can be effectively protected.

[0046] Please see Figure 1 and Figure 2Each assembly station 20 is equipped with a screw feeder 22, an electric screwdriver 23, a barcode scanner 24, a double-speed chain control console 25, station status indicator lights 26, and a station display screen 27. The screw feeder 22 automatically supplies screws; after the operator takes the screws, they use the electric screwdriver 23 to install them onto the workpiece located on the manual / automatic flip-and-position fixture. The barcode scanner 24 scans the workpiece for traceability. The double-speed chain control console 25 integrates buttons to control the operation of the double-speed chain assembly line, facilitating operation in emergencies. The station status indicator lights 26 use color to reflect the current status of the station for easy viewing by surrounding personnel. The station display screen 27 displays various information to the operator at the current station.

[0047] It should be noted that both the first double-speed chain conveyor line 16 and the second double-speed chain conveyor line 17 are ordinary double-speed chain conveyor lines. Both lines are equipped with tooling base positioning mechanisms for positioning the tooling base 1 at each corresponding workstation. Furthermore, please refer to... Figure 5 and Figure 6 The tooling base 1 is provided with outward protruding guide rollers 33 at each of the four corners. The four guide rollers 33 can cooperate with the first double speed chain conveyor line 16 and the second double speed chain conveyor line 17 to ensure the stability and reliability of the manual and automatic flip positioning tooling running on the first double speed chain conveyor line 16 and the second double speed chain conveyor line 17.

[0048] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A manual / automatic integrated flipping and positioning fixture, comprising a fixture base (1) and a flipping and positioning frame (3), wherein both ends of the fixture base (1) in the length direction are fixedly mounted with upwardly extending positioning frame brackets (2), and both ends of the flipping and positioning frame (3) in the length direction are rotatably mounted on the corresponding positioning frame brackets (2) via rotating shafts (4), and the flipping and positioning frame (3) is provided with a workpiece positioning and locking assembly (5) capable of fixing the workpiece thereon, characterized in that: One of the rotating shafts (4) is fitted with an operating turntable (6) and a follower gear (7) that rotate synchronously with it. A lifting guide rod (8) that can move up and down along the positioning frame bracket (2) adjacent to the follower gear (7) is installed. The lifting guide rod (8) is located directly below the follower gear (7). The upper end of the lifting guide rod (8) is fixedly connected to a sector gear (9) adapted to the follower gear (7), and the lower end is hinged to a lever (11) via a first hinge (10). The middle part of the lever (11) is hinged to the tooling base (1) via a second hinge (12). One end of the lever (11) is fixedly connected to a hand crank (13). A hinge (10) is located between the second hinge (12) and the hand crank (13). The other end of the lever (11) is the machine control end (11a). An elastic component (14) is provided between the lifting guide rod (8) and the adjacent positioning frame bracket (2) to make the lifting guide rod (8) have an upward trend. When the hand crank (13) is pressed down or the machine control end (11a) is pushed up, the sector gear (9) separates from the follower gear (7). When the hand crank (13) and the machine control end (11a) are released, the lifting guide rod (8) rises under the action of the elastic component (14) so ​​that the sector gear (9) and the follower gear (7) remain engaged.

2. The manual / automatic integrated flipping and positioning fixture according to claim 1, characterized in that: The follower gear (7) and the operating turntable (6) are located on the inner and outer sides of the corresponding positioning frame bracket (2), respectively.

3. The manual / automatic integrated flipping and positioning fixture according to claim 2, characterized in that: A protective cover (15) is installed on the positioning frame bracket (2) adjacent to the follower gear (7). The follower gear (7), sector gear (9) and elastic component (14) are all located in the protective cover (15). The lower end of the lifting guide rod (8) extends out of the protective cover (15).

4. The manual / automatic integrated flipping and positioning fixture according to claim 1, characterized in that: The workpiece positioning and locking assembly (5) includes two mounting plates (5a) that are fixedly installed at both ends of the flip positioning frame (3) along the length direction. Several positioning elements (5b) and at least one quick clamp (5c) are fixedly installed on the same side surface of the mounting plates (5a).

5. A speed-doubled chain assembly line, characterized in that: The system includes a first line-changing module (18), a second line-changing module (19), a first double-speed chain conveyor line (16) and a second double-speed chain conveyor line (17) that are parallel to each other, and at least one manual / automatic integrated flip-and-position tooling as described in any one of claims 1-4. Both the first double-speed chain conveyor line (16) and the second double-speed chain conveyor line (17) are capable of transferring the manual / automatic integrated flip-and-position tooling located on them towards the unloading end. The first line-changing module (18) is capable of transferring the manual / automatic integrated flip-and-position tooling located at the unloading end of the first double-speed chain conveyor line (16) to the loading end of the second double-speed chain conveyor line (17). The second line-changing module (19) is capable of transferring the manual / automatic integrated flip-and-position tooling located at the unloading end of the first double-speed chain conveyor line (16) to the loading end of the second double-speed chain conveyor line (17). The manual / automatic flip-positioning fixture at the unloading end of the second double-speed chain conveyor (17) is transferred to the loading end of the first double-speed chain conveyor (16), so that the first double-speed chain conveyor (16), the first line changing module (18), the second double-speed chain conveyor (17) and the second line changing module (19) together form a circular conveyor line. The circular conveyor line is provided with multiple unlocking drive mechanisms (33) adapted to the machine control end (11a). When the machine control end (11a) of the manual / automatic flip-positioning fixture is located above any unlocking drive mechanism (33), the unlocking drive mechanism (33) can push up the machine control end (11a).

6. The speed-doubled chain assembly line according to claim 5, characterized in that: Each of the unlocking drive mechanisms (33) includes an unlocking cylinder (33b) that is vertically mounted on the first double-speed chain conveyor line (16) or the second double-speed chain conveyor line (17) via a cylinder bracket (33a). The piston rod of each unlocking cylinder (33b) extends upward and is fixedly connected to a large push plate (33c) for lifting the machine control end (11a).

7. The speed-doubled chain assembly line according to claim 5 or 6, characterized in that: The first double-speed chain conveyor (16) is provided with N+1 assembly stations (20) arranged sequentially from its loading end to its unloading end. The second double-speed chain conveyor (17) is provided with N assembly stations (20) arranged sequentially from its loading end to its unloading end and 1 vision inspection station (21). The first line change module (18) can transfer the manual and automatic flip-positioning fixture located at the unloading end of the first double-speed chain conveyor (16) to the assembly station (20) located at the loading end of the second double-speed chain conveyor (17). The second line change module (19) can transfer the manual and automatic flip-positioning fixture located at the vision inspection station (21) to the assembly station (20) located at the loading end of the first double-speed chain conveyor (16).

8. The speed-doubled chain assembly line according to claim 7, characterized in that: Each assembly station (20) is equipped with a screw feeding device (22), an electric screwdriver (23), a barcode scanner (24), a double-speed chain control console (25), a station status indicator light (26), and a station display screen (27).

9. The double-speed chain assembly line according to claim 7, characterized in that: Above the vision inspection station (21) is a vision mounting bracket (28) and at least one vision inspection mechanism (29) arranged along the length of the second speed chain conveyor (17). Each vision inspection mechanism (29) includes an electric lifting module (29a) that can be adjusted and mounted on the vision mounting bracket (28) along the width of the second speed chain conveyor (17). Each electric lifting module (29a) has a downward-facing vision camera (29b) mounted on its slide via a camera bracket (29c).

10. The speed-doubled chain assembly line according to claim 5 or 6, characterized in that: The first line-changing module (18) includes a first electric translation module (18a) arranged in the horizontal direction and a first docking double speed chain (18b) mounted on the slide of the first electric translation module (18a). The first docking double speed chain (18b) is adapted to the first double speed chain conveyor line (16) and the second double speed chain conveyor line (17), and can dock with the first double speed chain conveyor line (16) or the second double speed chain conveyor line (17) under the drive of the first electric translation module (18a). The second line-changing module (19) includes a second electric translation module (19a) arranged in the horizontal direction and a second docking double speed chain (19b) mounted on the slide of the second electric translation module (19a). The second docking double speed chain (19b) is adapted to the first double speed chain conveyor line (16) and the second double speed chain conveyor line (17) and can dock with the first double speed chain conveyor line (16) or the second double speed chain conveyor line (17) under the drive of the second electric translation module (19a).

Images