Automatic assembly clamp positioning mechanism for scissor-fork type arm support oil cylinder assembly

Abstract

The utility model relates to the technical field of clamp positioning mechanisms, and discloses an automatic assembly clamp positioning mechanism for a shear fork type arm support oil cylinder assembly, which comprises a bottom plate frame assembly, a turnover pressing assembly, a centering positioning mechanism, a vertical plate sliding table positioning assembly, a supporting assembly and a positioning seat assembly, and a triple piece mounting plate is arranged at the bottom of the bottom plate frame assembly. According to the utility model, the bottom plate frame assembly of the mechanism adopts an integral type, and positioning pins are adopted between each assembly and the bottom plate, so that the positioning precision is consistent with the machining precision, the positioning precision is high, the mechanism design is simple, most of the mounting space can be saved, and the positioning position can be adjusted according to the stroke of a switching cylinder in the vertical plate sliding table assembly; the welding fixture is simple in structure and suitable for workpieces of different specifications and sizes, all the workpieces are positioned and clamped through the air cylinders, stress and friction force caused by welding deformation can be well coped with, and the welding fixture is practical and suitable for wide application and popularization.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixture positioning mechanisms, in particular to a scissor-type arm frame oil cylinder component automatic assembly fixture positioning mechanism. Background Art

[0002] Most of the existing automatic assembly fixtures for scissor-type boom cylinder assemblies have simple structures, occupy large spaces, are costly, difficult to debug, and difficult to ensure precision; at the same time, they also have problems such as unstable operation and large deviations after long-term use.

[0003] The technical problem to be solved by this technology is: using various cylinder clamping components to realize the automatic assembly of scissor-type boom cylinder components, accurate positioning and clamping, so that the welding robot can perform precise welding, automated production, and automatic loading and unloading of parts through handling robots, which is highly efficient and easy to operate, greatly reducing the labor intensity of workers. This technology is mainly used in scissor-type boom cylinder components, and the automatic assembly and positioning of this structural part can achieve a good effect; this mechanism installs various cylinder positioning clamping components on the slide or base plate, and the slide is controlled by the cylinder to achieve accurate advancement and retraction on the base plate through the slider and the slide rail. Each cylinder clamping component is connected to the base plate or slide through the mounting seat, and the mounting seat and the base plate are positioned by pin holes. The positioning pin holes have high machining accuracy requirements and can achieve accurate positioning. This mechanism is simple in design and uses cylinders for push-pull positioning. Different cylinders are selected according to different push-pull force requirements, which can well cope with the stress and friction caused by welding deformation.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the problems that the existing automatic assembly fixtures of scissor-type boom cylinder components are mostly simple in structure, occupy a large space, are costly, difficult to debug, and difficult to ensure accuracy; at the same time, they also have unstable operation and large deviations in long-term use, the basic concept of the technical solution adopted by the utility model is:

[0006] A scissor-type boom cylinder assembly automatic assembly fixture positioning mechanism, including a base frame assembly, a flipping and clamping assembly, a centering positioning mechanism, a vertical plate slide positioning assembly, a support assembly and a positioning seat assembly. The base frame assembly is composed of square tubes and plates welded together, and a three-piece mounting plate is provided at the bottom of the base frame assembly. A flipping and clamping assembly, a centering positioning mechanism, a vertical plate slide positioning assembly, a support assembly and a positioning seat assembly are provided above the base frame assembly. A plurality of first cylinders are also provided on the base frame assembly, and each of the first cylinders is provided with a cylinder protective cover.

[0007] As a preferred embodiment of the utility model, the flipping and clamping assembly includes multiple pressure heads, mounting bases and gaskets. The mounting base is installed on the base plate frame assembly, a gasket is provided at the bottom of the mounting base, a strong clamping cylinder is installed on one side wall of the mounting base, and a pressure head is installed above the strong clamping cylinder.

[0008] As a preferred embodiment of the utility model, the centering and positioning mechanism includes multiple bases, multiple second cylinders, multiple first positioning pins and multiple centering sliders, each of the bases is installed on the base plate frame assembly, each side wall of the base is installed with a second cylinder, each of the second cylinders is penetrated by a first positioning pin, and each of the second cylinders is provided with centering sliders on both sides.

[0009] As a preferred embodiment of the utility model, the vertical plate slide positioning assembly includes a plurality of guide rails, each of which is provided with a cylinder at one end, and each of which is mounted on a base plate frame assembly.

[0010] As a preferred embodiment of the utility model, the support assembly includes multiple positioning blocks, multiple adjustment gaskets, multiple steel plates, and multiple square tubes. The two opposite side walls of each square tube are installed with steel plates. The bottom steel plate of each square tube is installed on the bottom plate frame assembly. An adjustment gasket is arranged above the steel plate above each square tube. A positioning block is installed on the side of each adjustment gasket away from the steel plate, and a proximity switch is arranged in the inner cavity of each positioning block.

[0011] As a preferred embodiment of the utility model, the positioning seat assembly includes multiple third cylinders, multiple slides, multiple adjustment devices, multiple fourth cylinders, multiple second positioning pins and multiple limit blocks, each of the third cylinders is installed on the third cylinder, an adjustment device is installed above each of the third cylinders, a limit block is installed on one side wall of each of the adjustment devices, two mutually symmetrical slides are provided at the bottom of each of the adjustment devices, a fourth cylinder is installed above each of the adjustment devices, and a second positioning pin is installed at one end of each of the fourth cylinders.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model adopts an integral base plate frame assembly, and positioning pins are used between each assembly and the base plate. The positioning accuracy is consistent with the machining accuracy, the positioning accuracy is high, and the mechanism design is simple, which can save most of the installation space. The positioning position in the vertical plate slide assembly can be adjusted according to the stroke of the switching cylinder. It is suitable for workpieces of different specifications and sizes, and all workpieces are positioned and clamped by cylinders, which can well cope with the stress and friction caused by welding deformation; at the same time, all positioning and clamping units in the tooling are automatically controlled, which is suitable for automated team welding, can reduce labor intensity and improve production efficiency.

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached picture:

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the flipping and pressing assembly of the utility model;

[0018] Figure 3 This is a schematic diagram of the centering and positioning mechanism structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the vertical plate slide positioning assembly of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the support assembly of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the positioning seat assembly of the utility model.

[0022] In the figure: 1. Base frame assembly; 2. Flip and clamp assembly; 3. Centering positioning mechanism; 4. Vertical plate slide positioning assembly; 5. Support assembly; 6. Positioning seat assembly; 7. Guide rail; 8. Cylinder protective cover; 9. Three-piece mounting plate; 10. First cylinder; 11. Pressure head; 12. Mounting base; 13. Gasket; 14. Base; 15. Second cylinder; 16. First positioning pin; 17. Centering slider; 18. Proximity switch; 19. Positioning block; 20. Adjusting gasket; 21. Steel plate; 22. Square tube; 23. Third cylinder; 24. Slider; 25. Adjustment device; 26. Fourth cylinder; 27. Second positioning pin; 28. Limit block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0024] like Figures 1 to 6 As shown, a scissor-type boom cylinder assembly automatic assembly fixture positioning mechanism includes a base frame assembly 1, a flipping and clamping assembly 2, a centering positioning mechanism 3, a vertical plate slide positioning assembly 4, a support assembly 5 and a positioning seat assembly 6. The base frame assembly 1 is composed of square tubes and plates welded together, and a three-piece mounting plate 9 is arranged at the bottom of the base frame assembly 1, and a flipping and clamping assembly 2, a centering positioning mechanism 3, a vertical plate slide positioning assembly 4, a support assembly 5 and a positioning seat assembly 6 are arranged above the base frame assembly 1. A plurality of first cylinders 10 are also arranged on the base frame assembly 1, and each first cylinder 10 is provided with a cylinder protective cover 8. The base frame assembly of this mechanism adopts an integral type, and positioning pins are used between each assembly and the base plate. The positioning accuracy is consistent with the machining accuracy, the positioning accuracy is high, and the mechanism design is simple, which can save most of the installation space. The positioning position in the vertical plate slide assembly can be adjusted according to the stroke of the switching cylinder. It is suitable for workpieces of different specifications and sizes, and all workpieces are positioned and clamped by cylinders, which can well cope with the stress and friction caused by welding deformation; at the same time, all positioning and clamping units in the tooling are automatically controlled, which is suitable for automated team welding, can reduce labor intensity and improve production efficiency.

[0025] In a specific embodiment, the flipping and clamping assembly 2 includes a plurality of pressing heads 11, a mounting base 12 and a gasket 13. The mounting base 12 is mounted on the base frame assembly 1. A gasket 13 is provided at the bottom of the mounting base 12. A strong clamping cylinder is installed on one side wall of the mounting base 12. The pressing head 11 is installed above the strong clamping cylinder. In this configuration, the mounting base is fixed to the base frame assembly 1 by fastening bolts, and can be positioned and installed according to the usage. The strong clamping cylinder is installed on the side of the mounting base 12 by screws, and its installation position can be adjusted by the gasket 13 to achieve flipping and clamping.

[0026] Furthermore, the centering and positioning mechanism 3 includes a plurality of bases 14, a plurality of second cylinders 15, a plurality of first positioning pins 16 and a plurality of centering sliders 17. Each base 14 is mounted on the base frame assembly 1. A second cylinder 15 is mounted on one side wall of each base 14. A first positioning pin 16 is provided through each second cylinder 15. Centering sliders 17 are provided on both sides of each second cylinder 15. In this configuration, the centering slider 17 is fixed to the base frame assembly 1 by screws, and when the second cylinder 15 is extended, the two first positioning pins 16 are driven to retract synchronously through the centering slider 17, so as to facilitate the loading and unloading of the workpiece; when the second cylinder 15 is retracted, the two positioning pins 16 are driven to extend synchronously through the centering slider 17 to position the workpiece.

[0027] Furthermore, the vertical plate slide positioning assembly includes a plurality of guide rails 7, each of which is provided with a cylinder at one end, and each guide rail 7 is mounted on the base frame assembly 1. In this configuration, the sliding movement of the slide is controlled by the cylinder through the slider 24 and the guide rail 7 sliding on the base, wherein 4 cylinder clamping assemblies and 2 limit assemblies are installed on the slide.

[0028] Furthermore, the support assembly 5 includes a plurality of positioning blocks 19, a plurality of adjustment gaskets 20, a plurality of steel plates 21, and a plurality of square tubes 22. The steel plates 21 are installed on the opposite side walls of each square tube 22. The steel plate 21 at the bottom of each square tube 22 is installed on the bottom plate frame assembly 1. An adjustment gasket 20 is arranged above the steel plate 21 above each square tube 22. A positioning block 19 is installed on the side of each adjustment gasket 20 away from the steel plate 21. A proximity switch 18 is arranged in the inner cavity of each positioning block 19. In this setting, it is fixed to the bottom plate frame assembly 1 by screws, and the support is welded by square tubes 22 and steel plates 21. The positioning block 19 and the support are adjusted by gaskets 13, which can ensure the height between the shaft workpiece and the bottom plate, and well ensure the positioning accuracy of the workpiece. The proximity switch in the middle of the positioning block feeds back signals when the workpiece is loaded, realizing automatic control.

[0029] Furthermore, the positioning seat assembly 6 includes multiple third cylinders 23, multiple sliders 24, multiple adjustment devices 25, multiple fourth cylinders 26, multiple second positioning pins 27 and multiple limit blocks 28. Each third cylinder 23 is installed on the third cylinder 23, and an adjustment device 25 is installed above each third cylinder 23. A limit block 28 is installed on one side wall of each adjustment device 25. Two symmetrical sliders 24 are arranged at the bottom of each adjustment device 25. A fourth cylinder 26 is installed above each adjustment device 25, and a second positioning pin 27 is installed at one end of each fourth cylinder 26. In this setting, the slider 24 and the guide rail 7 slide on the base frame assembly 1, and the sliding movement of the slide is controlled by the cylinder. A limit assembly is installed on the base plate at the end of the stroke of this mechanism to play a positioning role; the positioning seat assembly 6 is mainly used to position and clamp shaft workpieces to ensure the coaxiality of shaft parts; the mounting position of the mounting plate and the slide plate of the assembly is adjusted by the gasket 13, and the side of the positioning seat base is also adjusted by the gasket 13. By adjusting the gasket 13 in two directions, the accuracy of positioning the second pin shaft can be well guaranteed, thereby ensuring the coaxiality of the symmetrical pin shafts on both sides.

[0030] The implementation principle of the automatic assembly and fixture positioning mechanism of a scissor-type boom cylinder assembly of this embodiment is as follows:

[0031] Initial state: Cylinders P01, P03, P06, P10, P15, P17, P20, P21, P22, P23, and P24 are retracted, and P02, P18, P04, P05, P11, P07, P08, P12, P13, P19, and P16 are extended. When welding two cylinder assemblies, the adjustable cylinders P09 and P14 are extended or retracted in the initial state according to the type of cylinder assembly to be welded, and they play a positioning role during the welding process and do not move. P21, P22, P23, and P24 remain in the extended state after the tooling is debugged, and do not move during the welding process (the P in the initial state refers to the cylinder assembly part);

[0032] Step 1: The handling robot grabs the side plate of the oil cylinder plate and places it on the fixture (the proximity switch 18 senses whether there is a workpiece), and then the three-axis cylinders P07 and P08 retract to clamp the oil cylinder side plate. After it is in place (delay of 3 seconds), the ultra-thin cylinder P02 retracts, and the ultra-thin cylinders P04 and P05 retract;

[0033] Step 2: The handling robot grabs the other side plate of the cylinder plate and places it on the fixture (the proximity switch 18 senses whether there is a workpiece), and then the three-axis cylinders P12 and P13 retract to clamp the cylinder side plate. After they are in place (delay of 3 seconds), the ultra-thin cylinder P18 retracts, and the ultra-thin cylinders P16 and P19 retract;

[0034] The third layout: The handling robot grabs the cylinder plate round tube and places it on the fixture (the proximity switch 18 senses whether there is a workpiece), and the ultra-thin cylinders P03 and P17 extend the positioning round tube. After it is in place (delay of 3 seconds), the handling robot grabs the cylinder plate round tube on the other side and places it on the fixture (the proximity switch senses whether there is a workpiece), and the ultra-thin cylinders P01 and P20 extend the positioning round tube. After it is in place (delay of 3 seconds); the ultra-thin cylinders P02 and P18 extend to push the cylinder plate side plates to the corresponding positions; after it is in place, the ultra-thin cylinder P10 extends to position the two side plates of the cylinder plate;

[0035] Step 4: The handling robot grabs the top plate of the cylinder plate and places it in the corresponding position on the plates on both sides of the cylinder plate (the proximity switch 18 senses whether there is a workpiece). After it is placed in place, the cylinder P11 is clamped tightly to compress the plate;

[0036] Step 5: The handling robot grabs the small plates on both sides of the cylinder plate and places them on the corresponding positions of the adjustable three-axis cylinders P09 and P14. After they are placed in place, the three-axis cylinders P06 and P15 extend to press the small plates on both sides;

[0037] Step 6: The welding robot welds the joints of the oil cylinder assembly. After welding, the cylinders P04, P05, P115, and P19 are retracted, and the other cylinders are in the initial state. The handling robot grabs the welded workpiece.

[0038] Step 7: Enter the next cycle.

Claims

1. A scissor-type arm cylinder assembly automatic assembly fixture positioning mechanism, comprising a base frame assembly (1), a flipping and clamping assembly (2), a centering positioning mechanism (3), a vertical plate slide positioning assembly (4), a support assembly (5) and a positioning seat assembly (6), characterized in that: The base frame assembly (1) is formed by welding square tubes and plates, and a three-piece mounting plate (9) is arranged at the bottom of the base frame assembly (1). A flipping and clamping assembly (2), a centering positioning mechanism (3), a vertical plate slide positioning assembly (4), a support assembly (5) and a positioning seat assembly (6) are arranged above the base frame assembly (1). A plurality of first cylinders (10) are also arranged on the base frame assembly (1), and each of the first cylinders (10) is provided with a cylinder protective cover (8).

2. The automatic assembly and fixture positioning mechanism of the scissor-type boom cylinder assembly according to claim 1 is characterized in that: The flipping and clamping assembly (2) comprises a plurality of pressing heads (11), a mounting base (12) and a gasket (13); the mounting base (12) is mounted on the base frame assembly (1); a gasket (13) is provided at the bottom of the mounting base (12); a strong clamping cylinder is installed on one side wall of the mounting base (12); and a pressing head (11) is installed above the strong clamping cylinder.

3. The automatic assembly and fixture positioning mechanism of the scissor-type boom cylinder assembly according to claim 1 is characterized in that: The centering and positioning mechanism (3) comprises a plurality of bases (14), a plurality of second cylinders (15), a plurality of first positioning pins (16) and a plurality of centering slide blocks (17); each of the bases (14) is mounted on a base frame assembly (1); a second cylinder (15) is mounted on one side wall of each of the bases (14); a first positioning pin (16) is provided through each of the second cylinders (15); and centering slide blocks (17) are provided on both sides of each of the second cylinders (15).

4. The automatic assembly and fixture positioning mechanism of the scissor-type boom cylinder assembly according to claim 1 is characterized in that: The vertical plate slide positioning assembly comprises a plurality of guide rails (7), one end of each guide rail (7) is provided with a cylinder, and each guide rail (7) is mounted on a base plate frame assembly (1).

5. The automatic assembly and fixture positioning mechanism of the scissor-type boom cylinder assembly according to claim 1 is characterized in that: The support assembly (5) comprises a plurality of positioning blocks (19), a plurality of adjusting gaskets (20), a plurality of steel plates (21), and a plurality of square tubes (22). The opposite side walls of each square tube (22) are both installed with steel plates (21). The bottom steel plate (21) of each square tube (22) is installed on the bottom plate frame assembly (1). An adjusting gasket (20) is arranged above the steel plate (21) above each square tube (22). A positioning block (19) is arranged on the side of each adjusting gasket (20) away from the steel plate (21). A proximity switch (18) is arranged in the inner cavity of each positioning block (19).

6. The automatic assembly and fixture positioning mechanism of the scissor-type boom cylinder assembly according to claim 1, characterized in that: The positioning seat assembly (6) comprises a plurality of third cylinders (23), a plurality of sliders (24), a plurality of adjustment devices (25), a plurality of fourth cylinders (26), a plurality of second positioning pins (27) and a plurality of limit blocks (28); each of the third cylinders (23) is mounted on the third cylinder (23); an adjustment device (25) is mounted above each of the third cylinders (23); a limit block (28) is mounted on a side wall of each of the adjustment devices (25); two symmetrical sliders (24) are arranged at the bottom of each of the adjustment devices (25); a fourth cylinder (26) is mounted above each of the adjustment devices (25); and a second positioning pin (27) is mounted at one end of each of the fourth cylinders (26).

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