Elastic clamping jig for structural member

Abstract

The utility model discloses an elastic clamping jig for a structural member, which is used for clamping the structural member and comprises a base, a jig plate, a pressurizing component, a pneumatic component and a clamping component. The jig plate is fixed on the base through a plurality of supporting columns, the pressurizing assembly is installed on the base, and the clamping assembly is arranged on the jig plate; the pressurizing assembly is pneumatically connected with the pneumatic assembly and the clamping assembly, the pressurizing assembly and the pneumatic assembly are externally connected with gas source equipment used for providing gas, and the structural part is placed on the jig plate; when the pneumatic assembly controls the pressurizing assembly to input one path of gas, the other path of gas is conveyed to the pressurizing assembly, and the pressurizing assembly drives the clamping assembly to clamp the structural part according to the input two paths of gas. When the pneumatic assembly controls the pressurizing assembly to exhaust gas, the pressurizing assembly drives the clamping assembly to loosen the structural part according to the exhausted gas. The pneumatic control mode is simpler to operate, the structural part cannot deform without screwing in a screw, and the problems that an existing clamping mode wastes time in operation and deforms the structural part are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a loose and tight clamping fixture for structural parts. Background Art

[0002] With the continuous updating and upgrading of industrial products, the requirements for fixtures are getting higher and higher. For some products with irregular shapes, such as Figure 1 The special-shaped structural member shown is composed of a left wing 101, a right wing 102 and a connecting plate 103, and the shaded parts are the surfaces that need to be processed. At present, the processing is completed by the clamping method of locking screws and replacing pressure plates, which is specifically as follows: the structural part is placed on the processing groove (which is provided with screw holes corresponding to the six screw holes on the structural part), and two pressure plates are placed on the left wing 101 and the right wing 102 respectively, and a screw hole on the pressure plate is aligned with a screw hole on the left wing 101 and the right wing 102, and the screw is screwed into the screw hole. The pressure plate presses the left wing 101 and the right wing 102 into the processing groove by screwing. At this time, the shaded surface of the joining plate 103 can be processed; after the processing is completed, the screws are loosened, and another pressure plate is placed on the joining plate 103, and the four screw holes on the other pressure plate are aligned with the four screw holes on the joining plate 103, and the screw is screwed into the screw hole. The other pressure plate presses the joining plate 103 into the processing groove by screwing. At this time, the shaded surface of the left wing 101 and the right wing 102 can be processed. This method requires manual operation, which is cumbersome, time-consuming and inefficient. In addition, locking screws may cause deformation of structural parts, and secondary tooling is prone to some defective structural parts.

[0003] Therefore existing technology still needs to be improved and improved. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a clamping fixture for loosening and tightening structural parts to solve the problem that the existing clamping method of locking screws and replacing pressure plates is time-consuming and causes deformation of the structural parts.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A structural component clamping fixture is used to clamp the structural component, comprising a base, a fixture plate, a pressurizing assembly, a pneumatic assembly, and a clamping assembly; the fixture plate is fixed to the base via a plurality of support columns, the pressurizing assembly is mounted on the base, and the clamping assembly is disposed on the fixture plate; the pressurizing assembly is pneumatically connected to the pneumatic assembly and the clamping assembly, and the pressurizing assembly and the pneumatic assembly are externally connected to an air source device for providing gas, and the structural component is placed on the fixture plate;

[0007] When the pneumatic component controls the boosting component to input one path of gas and transmits another path of gas to the boosting component, the boosting component drives the clamping component to clamp the structural component according to the two paths of gas input; when the pneumatic component controls the boosting component to discharge gas, the boosting component drives the clamping component to loosen the structural component according to the discharged gas.

[0008] In the described loose and tight clamping fixture for the structural member, the fixture plate is provided with a contoured groove adapted to the shape of the structural member, and a clamping groove for placing the clamping assembly; the contoured groove and the clamping groove are communicated.

[0009] In the loose and tight clamping fixture of the structural parts, the booster assembly includes a booster pump, a support plate, a slide support block, a switching pipe, several air pipes and several clamping rings; the booster pump is fixed on one side of the base, the slide support block is fixed on the base and is located on the inner side of the booster pump, the support plate is clamped on the slide support block and pneumatically connected to the booster pump through the switching pipe, the booster pump is connected to the external gas through the corresponding air pipe and clamping ring and is pneumatically connected to the pneumatic assembly, and the support plate is pneumatically connected to the clamping assembly through the corresponding air pipe and clamping ring.

[0010] In the loose and tight clamping fixture of the structural parts, the upper air inlet of the booster pump is connected to one end of the first air pipe and fastened by a first clamping ring, the lower air inlet of the booster pump is connected to one end of the second air pipe and fastened by a second clamping ring, the other end of the first air pipe is connected to an external air source device, the side air port of the booster pump is connected to one end of the third air pipe and fastened by a third clamping ring, the top air port of the booster pump is connected to one end of the fourth air pipe and fastened by a fourth clamping ring, and the other ends of the third air pipe and the fourth air pipe are pneumatically connected to the pneumatic component.

[0011] In the loose and tight clamping fixture of the structural parts, the air inlet of the adapter tube is inserted into the air outlet on the top of the booster pump and fastened by the fifth clamping ring, and the air outlet of the adapter tube is connected to the raised air inlet on the front of the support plate and fastened by the first clamping spring.

[0012] In the loose and tight clamping fixture of the structural parts, a first air outlet, a second air outlet, a first air inlet and a second air inlet are respectively provided on both sides above the back side of the support plate; the first air outlet is connected to one end of the first connecting pipe and is fastened by a sixth clamping ring, the second air outlet is connected to one end of the second connecting pipe and is fastened by a seventh clamping ring, the other end of the first connecting pipe and the other end of the second connecting pipe are both pneumatically connected to the clamping assembly, and the first air inlet and the second air inlet are both pneumatically connected to the pneumatic assembly.

[0013] In the loose and tight clamping fixture of the structural parts, the pneumatic assembly includes a pneumatic valve, a pneumatic valve switch, a connecting pipe, several air pipes and several clamping rings; the pneumatic valve is screwed and fixed to the other side of the base and abuts against the back of the slide support block, the air outlet above the front of the pneumatic valve is pneumatically connected to the air inlet at the upper end of the back of the support plate through the connecting pipe, and the air inlet on the top surface of the pneumatic valve is connected to the external air source equipment through the corresponding clamping ring and air pipe; the pneumatic valve switch is screwed and fixed to the side of the fixture plate, the first air port of the pneumatic valve switch is connected to the other end of the third air pipe and is fastened by the eighth clamping ring, and the second air port of the pneumatic valve switch is connected to the other end of the fourth air pipe and is fastened by the ninth clamping ring.

[0014] In the loose and tight clamping fixture of the structural parts, the clamping assembly includes 2 movable clamping blocks, 2 fixed clamping blocks, 4 telescopic columns and several clamping rings; a fixed clamping block is screwed and fixed in a clamping groove, the air inlet of the fixed clamping block is pneumatically connected to a connecting pipe through a corresponding clamping ring, and the 2 air outlets of the fixed clamping block are connected to a movable clamping block through corresponding clamping rings and telescopic rods, and the telescopic rod drives the movable clamping block to slide in the clamping groove 4.

[0015] In the loose and tight clamping fixture of the structural parts, the first air outlet above the front of the pneumatic valve is connected to one end of the first connecting pipe and is fastened by the second retaining spring, the other end of the first connecting pipe is connected to the first air inlet at the upper end of the back of the support plate and is fastened by the tenth retaining ring, the second air outlet above the front of the pneumatic valve is connected to one end of the second connecting pipe and is fastened by the third retaining spring, the other end of the second connecting pipe is connected to the second air inlet at the upper end of the back of the support plate and is fastened by the eleventh retaining ring.

[0016] In the loose and tight clamping fixture of the structural parts, the air inlet of the fixed clamping block is pneumatically connected to the first connecting pipe and fastened by a thirteenth clamping ring. The two air outlets of the fixed clamping block are respectively connected to one end of a telescopic rod and fastened by a clamping ring. The other ends of the two telescopic rods are respectively inserted into the mounting holes on the side of the corresponding fixed movable clamping block and fastened by a clamping ring.

[0017] Compared with the prior art, the present invention provides a structural component loosening and tightening clamping fixture for clamping structural components, comprising a base, a fixture plate, a booster assembly, a pneumatic assembly, and a clamping assembly; the fixture plate is fixed to the base via a plurality of support columns, the booster assembly is mounted on the base, and the clamping assembly is arranged on the fixture plate; the booster assembly pneumatically connects the pneumatic assembly and the clamping assembly, the booster assembly and the pneumatic assembly are externally connected to an air source device for providing gas, and the structural component is placed on the fixture plate; when the pneumatic assembly controls the booster assembly to input one gas and transmits another gas to the booster assembly, the booster assembly drives the clamping assembly to clamp the structural component according to the two input gases; when the pneumatic assembly controls the booster assembly to exhaust gas, the booster assembly drives the clamping assembly to loosen the structural component according to the exhausted gas. The pneumatic control method is simpler to operate, and there is no need to screw in screws so as not to deform the structural component, thus solving the problem that the existing clamping method of locking screws and replacing pressure plates is time-consuming and causes deformation of the structural component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic structural diagram of a workpiece with existing double-sided riveting.

[0019] Figure 2 This is an exploded view of the structure of the elastic clamping fixture of the structural parts provided by the utility model.

[0020] Figure 3 This is a schematic structural diagram of the loose and tight clamping fixture for structural parts provided by the utility model.

[0021] Figure 4 These are five views of the elastic clamping fixture for structural parts provided by the utility model.

[0022] Figure 5 This is a top view of the elastic clamping fixture of the structural part provided by the utility model when it is loosened.

[0023] Figure 6 This is a schematic diagram of the back structure of the elastic clamping fixture for structural parts provided by the utility model. DETAILED DESCRIPTION

[0024] The present invention provides a clamping fixture for loosening and tightening structural parts. To clarify the purpose, technical solution, and effects of the present invention, the present invention is further described below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are intended only to illustrate the present invention and are not intended to limit the present invention.

[0025] Please also see Figures 1 to 4 The present invention provides a structural member clamping fixture for tightening and loosening Figure 1The structural member 100 with left and right wings shown is clamped; it includes a base 1, a jig plate 2, a booster assembly, a pneumatic assembly and a clamping assembly; the jig plate 2 is fixed to the base 1 by a number of support columns 23, the booster assembly is installed on the base 1, the clamping assembly is arranged on the jig plate 2, a part of the pneumatic assembly is installed on the base 1, and the other part of the pneumatic assembly is installed on the jig plate 2; the booster assembly pneumatically connects the pneumatic assembly and the clamping assembly, the booster assembly and the pneumatic assembly are externally connected to an air source device for providing gas, the structural member 100 is placed on the jig plate 2, and when the pneumatic assembly controls the booster assembly to input one gas and transmits the other gas to the booster assembly, the booster assembly drives the clamping assembly according to the two input gases to clamp the structural member; when the pneumatic assembly controls the booster assembly to discharge the gas, the booster assembly drives the clamping assembly according to the discharged gas to loosen the structural member.

[0026] The gas source device is connected to the boost component and the pneumatic component at the same time. One gas path enters from the boost component and the other gas path enters from the pneumatic component. The two gas paths increase the air pressure, thereby strengthening the clamping force of the clamping component to ensure complete clamping. The base 1 supports and fixes each component. It is provided with a number of screw holes for screwing and fixing with the corresponding components in each component. The fixture plate 2 is used to place structural parts. It is provided with a contoured groove 3 that is adapted to the shape of the structural part, and a clamping groove 4 for placing the clamping component; the contoured groove 3 and the clamping groove 4 are connected. This embodiment is mainly used to clamp the left wing 101 and the right wing 102 of the structural part 100, so the clamping groove 4 is set to 2 accordingly, which are respectively located on the oblique side of the left wing 101 and the right wing 102. The clamping assembly moves in the clamping groove 4, and when it moves to squeeze the oblique sides of the left wing 101 and the right wing 102, the clamping operation of the structural member 100 is realized; when it moves to leave the oblique sides of the left wing 101 and the right wing 102, the loosening operation of the structural member 100 is realized.

[0027] The base 1 and the jig plate 2 are each provided with a screw hole at each of their four corners. There are four support columns 23, each with a screw hole at each end. Each support column 23 is placed on a corresponding screw hole in the base 1. Screws are screwed in from the bottom of the base 1 through the screw holes on the base 1 and inserted into the screw holes at the bottom of the support columns 23 for screwing and fixing. The jig plate 2 is placed on the four support columns 23. Screws are screwed in from the top of the jig plate 2 through the screw holes on the jig plate 2 and inserted into the screw holes at the top of the support columns 23 for screwing and fixing. The space created by the four support columns between the base 1 and the jig plate 2 is used to install most of the components in the boost assembly and the pneumatic assembly (the pneumatic valve switch 16 is installed on the side of the jig plate 2).

[0028] The booster assembly includes a booster pump 5, a support plate 6, a slide support block 7, a transfer tube 8, several air pipes and several clamping rings; the booster pump 5 is fixed on one side of the base 1, the slide support block 7 is fixed on the base 1 and is located on the inner side of the booster pump 5, the support plate 6 is clamped on the slide support block 7 and is pneumatically connected to the booster pump 5 through the transfer tube 8, the booster pump 5 is connected to the external gas through the corresponding air pipe and clamping ring and is pneumatically connected to the pneumatic assembly, and the support plate 6 is pneumatically connected to the clamping assembly through the corresponding air pipe and clamping ring.

[0029] Among them, the booster pump 5 (preferably an ISW ​​variable frequency fully automatic pipeline booster pump) has a convex three-dimensional block shape, which is used to provide telescopic pressure. In order to avoid gas leakage caused by displacement during operation and affect the boosting effect, in addition to being fixed to the base 1 by screw connection, a concave pump cavity 9 can also be provided on one side of the base 1. The pump cavity 9 is adapted to the shape of the booster pump 5, and the booster pump 5 is fixed in the pump cavity 9 and screwed to the bottom surface of the pump cavity 9. Preferably, the outer side surface of the booster pump 5 (the top surface of the protruding part) is flush with the side surface of one side of the base 1 (on the same plane).

[0030] The booster pump 5 is connected to the external gas through the corresponding air pipe and the clamp ring and is pneumatically connected to the pneumatic component. Specifically, the upper air inlet of the booster pump 5 is connected to one end of the first air pipe 10 and is fastened by the first clamp ring, the lower air inlet of the booster pump 5 is connected to one end of the second air pipe 11 and is fastened by the second clamp ring, the other end of the first air pipe 10 is connected to the external air source equipment, and the other end of the second air pipe 11 is not connected (to facilitate subsequent gas discharge), the side air port of the booster pump 5 is connected to one end of the third air pipe 12 and is fastened by the third clamp ring, the top air port of the booster pump 5 is connected to one end of the fourth air pipe 13 and is fastened by the fourth clamp ring, and the other ends of the third air pipe 12 and the fourth air pipe 13 are pneumatically connected to the pneumatic component.

[0031] The support plate 6 is pneumatically connected to the booster pump 5 via the adapter tube 8. Specifically, the air inlet of the adapter tube 8 is inserted into the air outlet at the top of the booster pump 5 and fastened via a fifth retaining ring. The air outlet of the adapter tube 8 is connected to the raised air inlet on the front surface of the support plate 6 and fastened via a first retaining spring 14. The elastic force of the first retaining spring 14 also enhances the sealing effect between the air outlet of the adapter tube 8 and the air inlet of the support plate 6.

[0032] The support plate 6 is hollow inside and is used to transmit gas. It is pneumatically connected to the clamping assembly through the corresponding air pipe and clamp ring. Figure 6As shown, specifically: two exhaust ports are respectively provided on both sides above the back side of the support plate 6, including a first air outlet, a second air outlet, a first air inlet and a second air inlet; the first air outlet is connected to one end of the first connecting pipe 20 and is fastened by a sixth clamping ring, the second air outlet is connected to one end of the second connecting pipe 21 and is fastened by a seventh clamping ring, the other end of the first connecting pipe 20 and the other end of the second connecting pipe 21 are both pneumatically connected to the clamping assembly, and the first air inlet and the second air inlet are both pneumatically connected to the pneumatic assembly.

[0033] The slide support block 7 is used to place the support plate 6 and is screwed to the base 1. A slide groove is provided on each side of the slide support block 7. The spacing between the two slide grooves matches the spacing between the two support feet on both sides of the bottom of the support plate 6. The support feet are stuck in the slide groove, and the support plate 6 can move in the slide groove to adjust its position, providing an adjustable space to meet the position installation requirements of the transfer pipe 8 and the booster pump 5. If the support plate 6 is too far back (away from the booster pump 5), the connection with the transfer pipe 8 will become loose, and the elastic force of the first retaining spring 14 cannot achieve the required sealing effect. In this embodiment, the position of the support plate 6 is preferably aligned with the outer side surface of the slide support block 7, and the booster pump 5 abuts.

[0034] The pneumatic assembly includes a pneumatic valve 15, a pneumatic valve switch 16, a connecting pipe 17, several air pipes and several clamping rings; the pneumatic valve 15 is screwed and fixed on the other side of the base 1 and abuts against the back of the slide support block 7, and the air outlet above the front of the pneumatic valve 15 is pneumatically connected to the air inlet at the upper end of the back of the support plate 6 through the connecting pipe 17, and the air inlet on the top surface of the pneumatic valve 15 is connected to the external air source equipment through the corresponding clamping ring and air pipe; the pneumatic valve switch 16 is screwed and fixed on the side of the fixture plate 2, the first air port of the pneumatic valve switch 16 is connected to the other end of the third air pipe 12 and is fastened by the eighth clamping ring, and the second air port of the pneumatic valve switch 16 is connected to the other end of the fourth air pipe 13 and is fastened by the ninth clamping ring.

[0035] The pneumatic valve switch 16 is connected in series with the booster pump 5 via the third and fourth air pipes 12, 13. Both the pneumatic valve 15 and the booster pump 5 are connected to an external air source device, thus forming a sealed air path between the air source device and the tensioning fixture. When the pneumatic valve switch 16 is open, the gas transmitted through the fourth air pipe 13 acts as a control air path for providing gas input to the tensioning fixture. When the pneumatic valve switch 16 is closed, the gas transmitted through the third air pipe 12 acts as a control air path for providing gas output (i.e., exhaust) to the tensioning fixture.

[0036] Among them, there are two air outlet holes above the front of the pneumatic valve 15, and two connecting pipes 17 are correspondingly set. The air outlet hole above the front of the pneumatic valve 15 is pneumatically connected to the air inlet at the upper end of the back of the support plate 6 through the connecting pipe 17. Specifically: the first air outlet hole above the front of the pneumatic valve 15 is connected to one end of the first connecting pipe and is fastened by the second retaining spring 18, the other end of the first connecting pipe is connected to the first air inlet at the upper end of the back of the support plate 6 and is fastened by the tenth retaining ring 19, the second air outlet hole above the front of the pneumatic valve 15 is connected to one end of the second connecting pipe and is fastened by the third retaining spring, the other end of the second connecting pipe is connected to the second air inlet at the upper end of the back of the support plate 6 and is fastened by the eleventh retaining ring.

[0037] The air inlet on the top surface of the pneumatic valve 15 is connected to an external air source device through a corresponding clamping ring and an air pipe. Specifically, the air inlet on the top surface of the pneumatic valve 15 is connected to one end of the fifth air pipe 22 and fastened through a twelfth clamping ring, and the other end of the fifth air pipe 22 is connected to an external air source device.

[0038] Another path of gas provided by the gas source equipment enters the pneumatic valve 15 from the fifth gas pipe 22 and is then transmitted to the support plate 6 through the two connecting pipes 17, providing sufficient air pressure for clamping and ensuring the clamping tightness.

[0039] The clamping assembly includes two movable clamping blocks 24, two fixed clamping blocks 25, four telescopic columns 26 and several clamping rings; a fixed clamping block 25 is screwed and fixed in a clamping groove 4, the air inlet of the fixed clamping block 25 is pneumatically connected to a connecting pipe through a corresponding clamping ring, and the two air outlets of the fixed clamping block 25 are connected to a movable clamping block 24 through corresponding clamping rings and telescopic rods, and the telescopic rod drives the movable clamping block 24 to slide in the clamping groove 4.

[0040] Based on the fact that there are two clamping grooves in this embodiment, one clamping groove is provided with one assembly clamp, and one assembly clamp is composed of one movable clamping block 24, one fixed clamping block 25, two telescopic columns 26 and five clamping rings. Figure 4 Taking the orientation shown as an example, in the left-hand clamping slot, the air inlet of the fixed clamping block is pneumatically connected to the first connecting pipe 20 and secured via the thirteenth snap ring. The two air outlets of the fixed clamping block 25 are each connected to one end of a telescopic rod and secured via a snap ring (the fourteenth and fifteenth snap rings). The other ends of the two telescopic rods are inserted into corresponding mounting holes on the side of the fixed movable clamping block 24 and secured via a snap ring (the sixteenth and seventeenth snap rings). The connections for the components in the right-hand clamping slot are identical to those on the left, except that the air inlet of the fixed clamping block is pneumatically connected to the second connecting pipe 21 via corresponding snap rings.

[0041] The fixed clamping block 25 is hollow. The pneumatic valve switch 16 controls the air flowing through the connecting pipe to enter the fixed clamping block 25, extending the telescopic column 26 and pushing the movable clamping block toward the structural component until it is clamped. When the pneumatic valve switch 16 controls the air flowing through the connecting pipe to be exhausted, the air in the fixed clamping block 25 is exhausted, causing the telescopic column to retract and separate the movable clamping block from the structural component.

[0042] Preferably, in order to completely clamp the structural member 100, the side of the fixed clamping block 25 that abuts against the structural member is completely aligned with the side of the structural member that is clamped. Figure 4 As shown, the clamped parts of the left wing 101 and the right wing 102 are inclined surfaces, so the fixed clamping block 25 is similar to a right-angled trapezoid, and one waist of the right-angled trapezoid is also an inclined surface, which fits the inclined surfaces of the left wing 101 and the right wing 102.

[0043] It should be understood that due to the large number of clasps, Figure 2 Only part of the clamping ring is shown. The clamping ring has the function of tightening the air pipe connection. Figure 2 The retaining spring shown in the figure (including the first retaining spring at the connecting pipe (thicker, adapted to the size of the transfer pipe), the second retaining spring and the third retaining spring at the two connecting pipes (thinner, adapted to the size of the connecting pipe)), in addition to having a tightening function, also has a certain elastic force, which increases the sealing effect by applying pressure through the elastic force.

[0044] The working principle of the elastic clamping fixture of the structural parts is as follows:

[0045] Place the structural component 100 in the contoured groove 3 on the jig plate 2, turn on the pneumatic valve switch 16, and the external gas enters the booster pump 5 from the first air pipe 10. The booster pump 5 pressurizes the external input gas and transmits it to the support plate 6 through the transfer pipe 8. At the same time, the pneumatic valve 15 works, and the other external input gas enters the pneumatic valve 15 through the fifth air pipe 22, and is then transmitted to the support plate 6 through the two connecting pipes 17. The two gasses are transmitted to the fixed clamping block 23 through the first connecting pipe 20 and the second connecting pipe 21 on the support plate 6. The gas pushes the telescopic column 26 to extend, and the telescopic column 26 drives the movable clamping block 24 to approach the inclined surfaces of the left wing 101 and the right wing 102 of the structural component. Pressure is applied to the inclined surfaces of the left wing 101 and the right wing 102 by squeezing the movable clamping block 24. The movement trajectory of the movable clamping block 24 is shown as follows. Figure 4 Indicated by the downward arrow in the .

[0046] Close the pneumatic valve switch 16, and the pneumatic valve 15 stops the gas input. The gas in the fixed clamping block 23 is transmitted to the support plate 6 through the first connecting pipe 20 and the second connecting pipe 21. Since the pneumatic valve 15 is closed, the gas in the support plate 6 can only be transmitted to the booster pump 5 through the transfer pipe 8 and discharged from the second air pipe 11 of the booster pump 5. The discharge of gas causes the telescopic column 26 to retract, causing the movable clamping block 24 to separate from the inclined surfaces of the left wing 101 and the right wing 102, thereby loosening the structural member 100. The movement trajectory of the movable clamping block 24 is shown as follows: Figure 4 Indicated by the upward arrow in the .

[0047] It is important to understand that Figure 4 The five views provided in the figure include the left view from left to right at the top, the main view, the right view, the rear view below the main view (the top middle view), and the top view below the rear view. During the clamping process, the two movable clamping blocks 24 are clamped or released synchronously. For ease of understanding, the top view shows the clamping state. Figure 5 , the top view shows the released state.

[0048] To sum up, the utility model provides a loose and tight clamping fixture for structural parts, which controls the telescopic column to drive the movable clamping block to move through pneumatic boosting, applies or removes pressure on the left and right wings of the structural part, thereby realizing clamping or loosening operations and completing the clamping of the structural part. Combined with the clamping of the profiling groove, the clamping is more stable, solves the deformation of the structural part caused by the existing clamping method of locking screws and replacing pressure plates, reduces defective products caused by problems such as clamping force, ensures the tolerance of related dimensions of the structural part, and meets the dimensional requirements; and the clamping steps are very simple, which improves the clamping processing speed of the structural part and improves the processing efficiency.

[0049] The division of the above functional modules is only for illustration. In actual applications, the above functions can be assigned to different functional modules as needed, that is, divided into different functional modules to complete all or part of the functions described above.

[0050] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and utility model concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A loose and tight clamping fixture for structural parts, used for clamping structural parts, characterized in that: The jig comprises a base, a jig plate, a pressurizing assembly, a pneumatic assembly, and a clamping assembly; the jig plate is fixed to the base via a plurality of support columns, the pressurizing assembly is mounted on the base, and the clamping assembly is arranged on the jig plate; the pressurizing assembly is pneumatically connected to the pneumatic assembly and the clamping assembly, the pressurizing assembly and the pneumatic assembly are externally connected to an air source device for providing gas, and the structural parts are placed on the jig plate; When the pneumatic component controls the boosting component to input one path of gas and transmits another path of gas to the boosting component, the boosting component drives the clamping component to clamp the structural component according to the two paths of gas input; when the pneumatic component controls the boosting component to discharge gas, the boosting component drives the clamping component to loosen the structural component according to the discharged gas.

2. The loose and tight clamping fixture for structural parts according to claim 1, characterized in that: The jig plate is provided with a profiling groove adapted to the shape of the structural member, and a clamping groove for placing a clamping assembly; the profiling groove and the clamping groove are communicated.

3. The loose and tight clamping fixture for structural parts according to claim 2, characterized in that: The booster assembly includes a booster pump, a support plate, a slide support block, a transfer tube, several air pipes and several clamping rings; the booster pump is fixed on one side of the base, the slide support block is fixed on the base and is located on the inner side of the booster pump, the support plate is clamped on the slide support block and pneumatically connected to the booster pump through the transfer tube, the booster pump is connected to the external gas through the corresponding air pipe and clamping ring and is pneumatically connected to the pneumatic assembly, and the support plate is pneumatically connected to the clamping assembly through the corresponding air pipe and clamping ring.

4. The loose and tight clamping fixture for structural parts according to claim 3, characterized in that: The upper air inlet of the booster pump is connected to one end of the first air pipe and fastened by a first clamp ring, the lower air inlet of the booster pump is connected to one end of the second air pipe and fastened by a second clamp ring, the other end of the first air pipe is connected to an external air source device, the side air port of the booster pump is connected to one end of the third air pipe and fastened by a third clamp ring, the top air port of the booster pump is connected to one end of the fourth air pipe and fastened by a fourth clamp ring, and the other ends of the third air pipe and the fourth air pipe are pneumatically connected to the pneumatic component.

5. The loose and tight clamping fixture for structural parts according to claim 3, characterized in that: The air inlet of the adapter tube is inserted into the air outlet on the top of the booster pump and fastened by a fifth clamping ring, and the air outlet of the adapter tube is connected to the air inlet raised on the front side of the support plate and fastened by a first clamping spring.

6. The loose and tight clamping fixture for structural parts according to claim 5, characterized in that: A first air outlet, a second air outlet, a first air inlet and a second air inlet are respectively provided on both sides above the back side of the support plate; the first air outlet is connected to one end of the first connecting pipe and is fastened by a sixth clamping ring, the second air outlet is connected to one end of the second connecting pipe and is fastened by a seventh clamping ring, the other end of the first connecting pipe and the other end of the second connecting pipe are pneumatically connected to the clamping assembly, and the first air inlet and the second air inlet are pneumatically connected to the pneumatic assembly.

7. The loose and tight clamping fixture for structural parts according to claim 3, characterized in that: The pneumatic assembly includes a pneumatic valve, a pneumatic valve switch, a connecting pipe, several air pipes and several clamping rings; the pneumatic valve is screwed and fixed to the other side of the base and abuts against the back of the slide support block, the air outlet above the front of the pneumatic valve is pneumatically connected to the air inlet at the upper end of the back of the support plate through the connecting pipe, and the air inlet on the top surface of the pneumatic valve is connected to the external air source equipment through the corresponding clamping ring and air pipe; the pneumatic valve switch is screwed and fixed to the side of the fixture plate, the first air port of the pneumatic valve switch is connected to the other end of the third air pipe and is fastened by the eighth clamping ring, and the second air port of the pneumatic valve switch is connected to the other end of the fourth air pipe and is fastened by the ninth clamping ring.

8. The loose and tight clamping fixture for structural parts according to claim 7, characterized in that: The clamping assembly includes two movable clamping blocks, two fixed clamping blocks, four telescopic columns and several clamping rings; a fixed clamping block is screwed and fixed in a clamping groove, the air inlet of the fixed clamping block is pneumatically connected to a connecting pipe through a corresponding clamping ring, and the two air outlets of the fixed clamping block are connected to a movable clamping block through corresponding clamping rings and telescopic rods, and the telescopic rod drives the movable clamping block to slide in the clamping groove 4.

9. The loose and tight clamping fixture for structural parts according to claim 7, characterized in that: The first air outlet above the front of the pneumatic valve is connected to one end of the first connecting pipe and is fastened by the second retaining spring, the other end of the first connecting pipe is connected to the first air inlet at the upper end of the back of the support plate and is fastened by the tenth retaining ring, the second air outlet above the front of the pneumatic valve is connected to one end of the second connecting pipe and is fastened by the third retaining spring, the other end of the second connecting pipe is connected to the second air inlet at the upper end of the back of the support plate and is fastened by the eleventh retaining ring.

10. The loose and tight clamping fixture for structural parts according to claim 8, characterized in that: The air inlet of the fixed clamping block is pneumatically connected to the first connecting pipe and fastened by a thirteenth clamping ring. The two air outlets of the fixed clamping block are respectively connected to one end of a telescopic rod and fastened by a clamping ring. The other ends of the two telescopic rods are respectively inserted into the mounting holes on the side of the corresponding fixed movable clamping block and fastened by a clamping ring.

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