Heavy-duty buffer stock stop device

Abstract

Heavy-duty buffer stock stop device, a cam is connected to a drive shaft, and the drive shaft is connected to a drive device; two fixed blocks are installed in parallel on the front side of the cam, the middle of the swing arm connecting rod is installed between the two fixed blocks through a second shaft, the rear end of the swing arm connecting rod is located above the cam, and a stop iron is installed at the front end of the swing arm connecting rod; the front part of the swing arm connecting rod is installed between the frame connecting rods through a first shaft; the lower ends of the frame connecting rods are respectively connected to the front ends of the second connecting rods through a third shaft, and transverse long holes are provided on the two fixed blocks, and the rear ends of the second connecting rods on both sides and the fixed blocks on both sides are connected through a fourth shaft penetrating through the long holes; a support seat is installed between the two fixed blocks, grooves are correspondingly provided on the upper side of the support seat and the lower side of the swing arm connecting rod, and a return spring is installed in the grooves; a hydraulic buffer is installed transversely through the support seat, and the height of the liquid buffer is the same as the height of the fourth shaft. The present invention absorbs the impact kinetic energy of the tray through a four-link structure, realizes the functions of blocking and discharging the large-mass tray, has good buffering effect and high automation degree.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tool automation, and particularly to the technical field of production lines or logistics conveying. Background Art

[0002] In engine and transmission assembly lines, it is necessary to transfer workpieces through conveying equipment. Usually, the assembled parts are placed on pallets and delivered to each station to complete the process tasks. Since the overall mass of the pallet and the workpiece is very large and has a large impact kinetic energy, conventional pallet stoppers (material blocking mechanisms) cannot meet the buffer and material blocking requirements. It is necessary to develop a heavy-duty buffer material blocking device to solve the buffer and stop requirements of large-mass pallets. Summary of the Invention

[0003] In order to solve the above problems existing in the conventional pallet stopper (material blocking mechanism), the present invention provides a heavy-duty buffer material blocking device.

[0004] The technical solution adopted by the present invention to achieve the above object is: a heavy-duty buffer material blocking device, a cam 3 is installed on the rear side of the bottom plate 1, the camshaft of the cam 3 is connected to the drive shaft 23, and the drive shaft 23 is connected to a drive device; two fixed blocks 13 are installed in parallel on the front side of the cam 3 on the bottom plate 1, the middle part of the swing arm connecting rod 12 is installed between the two fixed blocks 13 through the second shaft 19, the rear end of the swing arm connecting rod 12 is located above the cam 3, and a stop iron 11 is installed at the front end of the swing arm connecting rod 12; a frame connecting rod 10 is installed at the front end of the bottom plate 1, and the front part of the swing arm connecting rod 12 is installed between the frame connecting rods 10 through the first shaft 18; the lower ends of the frame connecting rods 10 are respectively connected to the front ends of the second connecting rods 6 through the third shaft 20, and transverse long holes are provided on the two fixed blocks, and the rear ends of the second connecting rods 6 on both sides and the fixed blocks 13 on both sides are connected through the fourth shaft 21 penetrating through the long holes; a support seat 16 is installed between the two fixed blocks 13 on the bottom plate 1, grooves are correspondingly provided on the upper side of the support seat 16 and the lower side of the swing arm connecting rod 12, and a return spring 14 is installed in the grooves; a hydraulic buffer 15 is installed horizontally through the support seat 16, and the height of the liquid buffer 15 is the same as the height of the fourth shaft 21.

[0005] The drive device includes a drive shaft 23 and a drive cylinder 22, the camshaft of the cam 3 is connected to the drive shaft 23 through a coupling 4, and the drive shaft 23 is connected to the drive cylinder 22.

[0006] A cam fixing block 2 is installed at the rear end of the bottom plate 1, and the cam 3 is installed on the cam fixing block 2.

[0007] An induction shaft 9 is installed on one side of the frame connecting rod 10, and a switch 8 is installed on the switch bracket 7 behind the induction shaft 9.

[0008] The heavy-duty buffer material blocking device of the present invention absorbs the impact kinetic energy of the pallet through a four-bar linkage structure, realizes the functions of material blocking and discharging of large-mass pallets, has good buffering effect and high automation degree. Brief Description of the Drawings

[0009] Figure 1 It is the drive structure diagram of the heavy-duty buffer and material stop device of the present invention.

[0010] Figure 2 It is the structure diagram of the heavy-duty buffer and material stop device of the present invention.

[0011] Figure 3 It is the structure diagram of the heavy-duty buffer and material stop device of the present invention.

[0012] Figure 4 It is the schematic diagram of the heavy-duty buffer and material stop device of the present invention in the in-situ state.

[0013] Figure 5 It is the schematic diagram of the heavy-duty buffer and material stop device of the present invention in the tray material stop and buffer state.

[0014] Figure 6 It is the schematic diagram of the heavy-duty buffer and material stop device of the present invention in the tray release state.

[0015] Figure 7 It is the schematic diagram of the application state of the heavy-duty buffer and material stop device of the present invention.

[0016] In the figure: 1. bottom plate, 2. cam fixing block, 3. cam, 4. coupling, 5. buffer and material stop device, 6. second connecting rod, 7. switch frame, 8. switch, 9. induction shaft, 10. frame connecting rod, 11. stop iron, 12. swing arm connecting rod, 13. fixing block (third connecting rod), 14. return spring, 15. hydraulic buffer, 16. support seat, 17. workpiece tray, 18. first shaft, 19. second shaft, 20. third shaft, 21. fourth shaft, 22. driving cylinder, 23. driving shaft, 24. fixing plate. Detailed Embodiment

[0017] The heavy-duty buffer and material stop device of the present invention is as Figures 1-3 shown, and is composed of a bottom plate 1, a camshaft fixing block 2, a cam 3, a coupling 4, a second connecting rod 6, a switch frame 7, a switch 8, an induction shaft 9, a frame connecting rod 10, a stop iron 11, a swing arm connecting rod 12, a fixing block 13 (third connecting rod), a return spring 14, a hydraulic buffer 15, etc.

[0018] At the rear end of the bottom plate 1, a cam fixing block 2 is installed. The cam 3 is installed on the cam fixing block 2. The camshaft of the cam 3 is connected to the drive shaft 23 through a coupling 4, and the drive shaft 23 is connected to the drive cylinder 22. On the bottom plate 1, two fixing blocks 13 are installed in parallel in front of the cam 3. The middle part of the swing arm connecting rod 12 is installed between the two fixing blocks 13 through the second shaft 19. The rear end of the swing arm connecting rod 12 is located above the cam 3, and a stop iron 11 is installed at the front end of the swing arm connecting rod 12. The front end of the bottom plate 1 is installed with a frame connecting rod 10. The front part of the swing arm connecting rod 12 is installed between the frame connecting rods 10 through the first shaft 18. The lower ends of the frame connecting rods 10 are respectively connected to the front ends of the second connecting rods 6 through the third shafts 20. Transverse long holes are provided on the two fixing blocks. The rear ends of the second connecting rods 6 on both sides and the fixing blocks 13 on both sides are connected through the fourth shafts 21 penetrating through the long holes. A support seat 16 is installed between the two fixing blocks 13 on the bottom plate 1. Corresponding grooves are provided on the upper side of the support seat 16 and the lower side of the swing arm connecting rod 12, and a return spring 14 is installed in the grooves. A hydraulic buffer 15 is installed transversely through the support seat 16, and the height of the liquid buffer 15 is the same as the height of the fourth shaft 21. An induction shaft 9 is installed on one side of the frame connecting rod 10, and a switch 8 is installed on the switch bracket 7 behind the induction shaft 9.

[0019] The frame connecting rod 10 (the first connecting rod), the second connecting rod 6, the fixing block 13 (the third connecting rod), and the swing arm connecting rod 12 (the fourth connecting rod) form a four-link material blocking device, and the hydraulic buffer 15 absorbs the impact force of the tray.

[0020] The heavy-duty four-link buffer material blocking device has 3 working states, and the mechanism of each working state is as follows:

[0021] As Figure 4 shown, in State 1, the material blocking (in-situ) state: In the material blocking state, the drive cylinder 22 drives the cam 3 to the bottom dead center. Under the action of the return spring 14, the stop iron 11 of the swing arm connecting rod 12 rises, exceeding a certain height from the bottom surface of the tray 17, and is in the material blocking position. The induction shaft 9 triggers the proximity switch 8 to send a material blocking signal, waiting for the tray to arrive and blocking the tray. S is the buffer stroke, and H is the material blocking stroke.

[0022] As Figure 5 shown, in State 2, the tray buffering and stopping state: The tray 17 moves forward. The front of the bottom of the tray 17 first contacts the stop iron 11. The tray pushes the stop iron 11 to make the swing arm connecting rod 12 (the first connecting rod) of the four-link mechanism rotate around the first shaft 18. The swing arm connecting rod 12 drags the second connecting rod 6 through the third shaft 20 to drive the fourth shaft 21 to slide forward in the long hole groove of the fixing block 13 (the third connecting rod). The fourth shaft 21 compresses the hydraulic buffer 15 during the sliding process, absorbing the impact kinetic energy of the tray 17. The fourth shaft 21 stops at the front end of the chute, and the tray stops, completing the buffering and stopping process. S2 is the buffer stroke of the buffer.

[0023] As Figure 6As shown in the figure, in state 3, the pallet release state: after pallet 17 stops, the process content is completed and the pallet is released. The process of the material blocking mechanism for release is as follows: First, the driving cylinder 22 operates, driving the cam 3 to the top dead center through the driving shaft 23 and the coupling 4. The cam 3 pushes the swing arm link 4 to drive the four-bar mechanism to move, and the return spring 14 is compressed. The stop iron 11 slides downward and disengages from the front end face of the lower part of the pallet, and the pallet is released. The four-bar mechanism continues to operate, causing the fourth shaft 21 to retract to the rear end of the chute, and the core shaft of the hydraulic buffer 15 extends to prepare for the next buffer material blocking. The sensing shaft 9 triggers the switch 8 to send a pallet release signal. H is the discharging stroke.

[0024] As described above, the material blocking mechanism has completed the functions of material blocking, buffering, stopping, and releasing.

[0025] Figure 7 It is an application example of the heavy-duty buffer material blocking mechanism on the cleaning machine of the electric drive bridge assembly line of Changan Ford Automobile.

[0026] The present invention is described through embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent substitutions can be made to these features and embodiments. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the protection scope of the present invention.

Claims

1. Heavy-duty buffer stock stop device, characterized in that: A cam (3) is installed on the rear side of the bottom plate (1). The camshaft of the cam (3) is connected to the drive shaft (23), and the drive shaft (23) is connected to the drive device. Two fixed blocks (13) are installed in parallel on the front side of the cam (3) on the bottom plate (1). The middle part of the swing arm link (12) is installed between the two fixed blocks (13) through the second shaft (19). The rear end of the swing arm link (12) is located above the cam (3), and a stop iron (11) is installed at the front end of the swing arm link (12). A frame link (10) is installed at the front end of the bottom plate (1). The front part of the swing arm link (12) is installed between the frame links (10) through the first shaft (18). The lower ends of the frame links (10) are respectively connected to the front ends of the second links (6) through the third shaft (20). Transverse long holes are provided on the two fixed blocks. The rear ends of the second links (6) on both sides and the fixed blocks (13) on both sides are connected through the fourth shaft (21) penetrating through the long holes. A support seat (16) is installed between the two fixed blocks (13) on the bottom plate (1). Corresponding grooves are provided on the upper side of the support seat (16) and the lower side of the swing arm link (12), and a return spring (14) is installed in the grooves. A hydraulic buffer (15) is installed transversely through the support seat (16), and the height of the liquid buffer (15) is the same as the height of the fourth shaft (21). The drive device includes a drive shaft (23) and a drive cylinder (22). The camshaft of the cam (3) is connected to the drive shaft (23) through a coupling (4), and the drive shaft (23) is connected to the drive cylinder (22). A cam fixing block (2) is installed at the rear end of the bottom plate (1), and the cam (3) is installed on the cam fixing block (2).

2. The heavy-duty buffer material stop device according to claim 1, characterized in that: An induction shaft (9) is installed on one side of the frame link (10), and a switch (8) is installed on the switch bracket (7) at the rear side of the induction shaft (9).

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