Elastic clamping jig for structural member

Abstract

The invention discloses an elastic clamping jig for a structural part, which is used for clamping the structural part and comprises a base, a jig plate, a pressurizing assembly, a pneumatic assembly and a clamping assembly, 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 invention relates to the field of mechanical technology, and in particular to a loose or tight clamping fixture for a structural part. 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 part is the surface that needs to be processed. At present, the processing is completed by the clamping method of locking screws and replacing pressure plates, which is specifically: placing the structural part on the processing groove (which is provided with screw holes corresponding to the six screw holes on the structural part), placing two pressure plates on the left wing 101 and the right wing 102 respectively, aligning a screw hole on the pressure plate with a screw hole on the left wing 101 and the right wing 102, screwing the screw into the screw hole, and 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, loosen the screws, place another pressure plate on the joining plate 103, align the four screw holes on the other pressure plate with the four screw holes on the joining plate 103, screwing the screw into the screw hole, and 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 the prior art still needs to be improved and enhanced. Summary of the invention

[0004] In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a loosening and tightening clamping fixture for 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 object, the present invention adopts the following technical solutions:

[0006] A loose clamping fixture for a structural part is used to clamp the structural part, and comprises a base, a fixture plate, a booster assembly, a pneumatic assembly and a clamping assembly; the fixture plate is fixed to the base through 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 is pneumatically connected to the pneumatic assembly and the clamping assembly, the booster assembly and the pneumatic assembly are externally connected to a gas source device for providing gas, and the structural part 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 input gases; when the pneumatic component controls the boosting component to exhaust gas, the boosting component drives the clamping component to loosen the structural component according to the exhausted gas.

[0008] In the described loose and tight clamping fixture for the structural member, the described fixture plate is provided with a profiling groove adapted to the shape of the structural member, and a clamping groove for placing the clamping assembly; the profiling 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 transfer tube, a plurality of air pipes and a plurality of 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 is 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 the 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 the 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 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.

[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 side of the support plate and fastened by the first clamping spring.

[0012] In the loose and tight clamping fixture of the structural part, the first air outlet, the second air outlet, the first air inlet and the 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, a plurality of air pipes and a plurality of retaining 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 an external air source device through the corresponding retaining 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 retaining 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 retaining 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 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.

[0015] In the loose and tight clamping fixture of the structural parts, the first air outlet hole 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 side of the support plate and is fastened by the tenth retaining ring, the second air outlet hole 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 side 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, and 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 loose and tight clamping fixture for structural parts, which is used to clamp the structural parts, including a base, a fixture plate, a booster assembly, a pneumatic assembly and a clamping assembly; the fixture plate is fixed on the base through a number of support columns, the booster assembly is installed 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 a gas source device for providing gas, and the structural parts are 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 parts according to the input two gases; when the pneumatic assembly controls the booster assembly to discharge gas, the booster assembly drives the clamping assembly to loosen the structural parts according to the discharged gas. The pneumatic control method is simpler to operate, and the structural parts will not be deformed without screwing in the screws, which solves the problem that the existing clamping method of locking screws and changing pressure plates is time-consuming and causes deformation of the structural parts. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is an exploded view of the structure of the loose and tight clamping fixture of the structural part provided by the present invention.

[0020] Figure 3 A schematic diagram of the structure of a loose or tight clamping fixture for a structural member provided by the present invention.

[0021] Figure 4 Five views of the loose and tight clamping fixture for the structural parts provided by the present invention.

[0022] Figure 5 A top view of the loose and tight clamping fixture of the structural member provided by the present invention when it is loosened.

[0023] Figure 6 A schematic diagram of the back structure of the elastic clamping fixture for the structural member provided by the present invention. DETAILED DESCRIPTION

[0024] The present invention provides a loose and tight clamping fixture for a structural part. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] Please also see Figures 1 to 4 The embodiment of the present invention provides a loose and tight clamping fixture for a structural part, which is used for 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 another 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 exhaust gas, the booster assembly drives the clamping assembly according to the exhausted 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, and is provided with a number of screw holes for screwing and fixing with corresponding components in each component. The fixture plate 2 is used to place structural parts, and is provided with a contoured groove 3 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, and the clamping groove 4 is correspondingly set to 2, which are respectively located on the hypotenuse 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 hypotenuse 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 hypotenuse 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 provided with a screw hole at each of the four corners, and the support column 23 is provided with four screw holes at both ends of the support column 23. Each support column 23 is placed on the corresponding screw hole of the base 1, and 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 column 23 for screwing and fixing; the jig plate 2 is placed on the four support columns 23, and 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 column 23 for screwing and fixing. The space supported by the four support columns between the base 1 and the jig plate 2 is used to install most of the components in the booster assembly and the pneumatic assembly (the pneumatic valve switch 16 is installed on the side of the jig plate 2).

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

[0029] 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 displacement during operation and gas leakage, which affects the boosting effect, in addition to being fixed to the base 1 by screw connection, a concave pump chamber 9 can also be provided on one side of the base 1. The pump chamber 9 is adapted to the shape of the booster pump 5, and the booster pump 5 is clamped in the pump chamber 9 and screwed to the bottom surface of the pump chamber 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 boost 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 boost 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 boost 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, the other end of the second air pipe 11 is not connected (to facilitate the subsequent exhaust of gas), the side air port of the boost 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 boost 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 through the adapter tube 8, specifically: the air inlet of the adapter tube 8 is inserted into the air outlet on the top of the booster pump 5 and fastened by the fifth clamp ring, and the air outlet of the adapter tube 8 is connected to the raised air inlet on the front side of the support plate 6 and fastened by the first clamp spring 14. The elastic force of the first clamp spring 14 can also enhance 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 for transmitting gas and is pneumatically connected to the clamping assembly through a corresponding air pipe and a clamping 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 and fixed on the base 1. A slide groove is provided on both sides of the slide support block 7, and 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 tube 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 tube 8 will be loose, and the elastic force of the first retaining spring 14 cannot achieve the desired sealing effect. In this embodiment, the position of the support plate 6 is preferably aligned with the outer side 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, a plurality of air pipes and a plurality of retaining 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, 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 an external air source device through a corresponding retaining 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 retaining 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 retaining ring.

[0035] The pneumatic valve switch 16 is connected in series with the booster pump 5 through the third air pipe 12 and the fourth air pipe 13, and the pneumatic valve 15 and the booster pump 5 are both connected to an external air source device, so that a sealed air path between the air source device and the loose and tight clamping fixture can be formed. When the pneumatic valve switch 16 is turned on, the gas transmission through the fourth air pipe 13 is equivalent to providing a control air path for gas input to the loose and tight clamping fixture; when the pneumatic valve switch 16 is closed, the gas transmission in the third air pipe 12 is equivalent to providing a control air path for gas output (i.e., discharge) to the loose and tight clamping fixture.

[0036] Among them, the pneumatic valve 15 is provided with two air outlets on the upper front side, and the connecting pipes 17 are correspondingly provided with two. The air outlet on the upper front side of the pneumatic valve 15 is pneumatically connected to the air inlet at the upper back side of the support plate 6 through the connecting pipe 17. Specifically, the first air outlet on the upper front side 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 back side of the support plate 6 and is fastened by the tenth retaining ring 19, the second air outlet on the upper front side 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 back side 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 clamp 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 clamp 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 device 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 gas 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 a plurality of 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 two clamping grooves are provided 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 direction shown as an example, in the left clamping groove, the air inlet of the fixed clamping block is pneumatically connected to the first connecting pipe 20 and fastened by the thirteenth clamping ring, the two air outlets of the fixed clamping block 25 are respectively connected to one end of a telescopic rod and fastened by a clamping ring (the fourteenth clamping ring and the fifteenth clamping ring), and 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 24 and fastened by a clamping ring (the sixteenth clamping ring and the seventeenth clamping ring). The connection method of each component in the right clamping groove is the same as that on the left, except that the air inlet of the fixed clamping block is pneumatically connected to the second connecting pipe 21 through the corresponding clamping ring.

[0041] The fixed clamping block 25 is hollow inside, and the pneumatic valve switch 16 controls the gas transmitted in the connecting pipe to enter the fixed clamping block 25, so that the telescopic column 26 extends and pushes the movable clamping block toward the structural member until the structural member is clamped. When the pneumatic valve switch 16 controls the gas transmitted in the connecting pipe to be discharged, the gas in the fixed clamping block 25 is discharged, so that the telescopic rod is retracted, and the movable clamping block is separated from the structural member.

[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 in contact 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 clamp ring is shown. The clamp ring has the function of fastening 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 adapter pipe), the second retaining spring and the third retaining spring at the two connecting pipes (thinner, adapted to the size of the connecting pipes)), in addition to having a tightening function, also has a certain elastic force, which increases the sealing effect through the pressure of the elastic force.

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

[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 adapter tube 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 then is transmitted to the support plate 6 through the two connecting pipes 17. The two gas paths 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 through the extrusion of the movable clamping block 24. The movement trajectory of the movable clamping block 24 is shown as follows. Figure 4 as indicated by the downward arrow in the

[0046] The pneumatic valve switch 16 is closed, 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, so that the movable clamping block 24 is separated 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 in FIG. Figure 4 As 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 active 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 present invention provides a loose and tight clamping fixture for a structural part. It controls the telescopic column to drive the movable clamping block to move through a pneumatic booster method, applies or removes pressure on the left and right wings of the structural part, thereby realizing the clamping or loosening operation and completing the clamping of the structural part. Combined with the clamping of the profiling groove, the clamping is more stable, and the deformation of the structural part caused by the existing clamping method of locking screws and replacing pressure plates is solved, and defective products caused by problems such as clamping force are reduced, and the tolerance of the relevant dimensions of the structural part is guaranteed to meet 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 practical 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 inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A loose clamping fixture for a structural part, used for clamping a structural part, characterized in that: It includes a base, a jig plate, a booster assembly, a pneumatic assembly and a clamping assembly; the jig plate is fixed to the base through a plurality of support columns, the booster assembly is mounted on the base, and the clamping assembly is arranged on the jig plate; the booster assembly is pneumatically connected to 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 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 input gases; when the pneumatic component controls the boosting component to exhaust gas, the boosting component drives the clamping component to loosen the structural component according to the exhausted gas.

2. The loose and tight clamping fixture for structural parts according to claim 1 is 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 is characterized in that: The boosting assembly includes a boosting pump, a support plate, a slide support block, a transfer tube, a plurality of air pipes and a plurality of clamping rings; the boosting 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 boosting pump, the support plate is clamped on the slide support block and is pneumatically connected to the boosting pump through the transfer tube, the boosting pump is connected to the external gas through the corresponding air pipe and the 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 the clamping ring.

4. The loose and tight clamping fixture for structural parts according to claim 3 is characterized in that: The upper air inlet of the boost pump is connected to one end of the first air pipe and is fastened by a first clamp ring, the lower air inlet of the boost pump is connected to one end of the second air pipe and is 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 boost pump is connected to one end of the third air pipe and is fastened by a third clamp ring, the top air port of the boost pump is connected to one end of the fourth air pipe and is 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 is 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 raised air inlet 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: The first air outlet, the second air outlet, the first air inlet and the 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 the sixth clamping ring, the second air outlet is connected to one end of the second connecting pipe and is fastened by the 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 is characterized in that: The pneumatic assembly includes a pneumatic valve, a pneumatic valve switch, a connecting pipe, a plurality of air pipes and a plurality of retaining rings; the pneumatic valve is threadedly 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 an external air source device through a corresponding retaining ring and air pipe; the pneumatic valve switch is threadedly 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 retaining 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 retaining ring.

8. The loose and tight clamping fixture for a structural member according to claim 7, characterized in that: 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.

9. The loose and tight clamping fixture for a structural member according to claim 7, characterized in that: The first air outlet above the front side 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 side of the support plate and is fastened by the tenth retaining ring, the second air outlet above the front side 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 side of the support plate and is fastened by the eleventh retaining ring.

10. The loose and tight clamping fixture for a structural member 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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