CN217384564U

CN217384564U - Airtight structure of gas tightness end cap

Info

Publication number: CN217384564U
Application number: CN202220238490.9U
Authority: CN
Inventors: 覃自健
Original assignee: Foshan Shenghang Mould Machinery Co ltd
Current assignee: Foshan Shenghang Mould Machinery Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-09-06
Anticipated expiration: 2032-01-28

Abstract

The utility model relates to an airtight structure of gas tightness end cap, including the end cap base that is used for connecting the gas circuit, end cap base one end is the inlet end, and the other end is for giving vent to anger the end, the central authorities of the end of giving vent to anger are equipped with the replacement screw thread mouth, replacement screw thread mouth threaded connection has the replacement end cap subassembly, the end cap base is close to the pot head of giving vent to anger and still the movable sleeve is equipped with the installation positioning seat, inlet end fixedly connected with is used for the horizontal sharp servo mechanism of push-and-pull end cap base. The utility model discloses can come the crimping pipe fitting of the different bores of quick adaptation through replacement end cap subassembly, to the crimping pipe fitting in different bores eccentric pipe fitting even, it can replace the end cap and all can cooperate with the port of crimping pipe fitting under the prerequisite of unmovable position, conveniently carries out the gas tightness test of crimping pipe fitting in batches, has effectively improved the production efficiency of crimping pipe fitting and has reduced intensity of labour.

Description

Airtight structure of gas tightness end cap

Technical Field

The utility model belongs to the technical field of check out test set, concretely relates to be to the airtight structure of a gas tightness end cap that crimping pipe fitting detected usefulness.

Background

In the production process of the pressure-welding pipe fitting, the detection process of the pressure-welding pipe fitting is the most important ending link, usually, the detection is carried out in an underwater ventilation mode, a detection person needs to judge whether the air tightness defect exists in a mode of observing by naked eyes, although the detection method is simple and practical, the energy consumption of people is very large, and the detection is solid and feasible when no water exists, the existing air tightness detection structure of the pressure-welding pipe fitting is not suitable for occasions with more pipe diameter differences, particularly, an eccentric pipe exists, the universality of the existing air tightness plug structure is poor, various types of air tightness plugs and matched sealing structures thereof are needed to meet the test requirements, the existing test equipment causes the current situation that the workload is too large and the work efficiency is difficult to improve for the production test person, the improvement of the production efficiency is not facilitated, and the purpose of further expanding the productivity of a production manufacturer is hindered, therefore, an airtight plug structure capable of rapidly adapting to crimping pipe fittings of various specifications is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

To the technical defect who exists among the background art, the utility model provides an airtight structure of gas tightness end cap has solved above-mentioned technical problem and has satisfied the actual demand, and concrete technical scheme is as follows:

a closed structure of an air-tight plug comprises a plug base used for connecting an air circuit, wherein one end of the plug base is an air inlet end, the other end of the plug base is an air outlet end, a replacement threaded hole is formed in the center of the air outlet end, a replacement plug assembly is in threaded connection with the replacement threaded hole, the replacement plug assembly comprises a threaded connector matched with the replacement threaded hole, a metal guide head in threaded connection with the threaded connector and sleeved with an expansion rubber ring, and a sealing push ring movably sleeved between the expansion rubber ring and the threaded connector, the plug base is also movably sleeved with a mounting positioning seat close to the air outlet end, the mounting positioning seat is provided with a circle of limiting ring abutted against the sealing push ring, the air inlet end is fixedly connected with a horizontal linear servo mechanism used for pushing and pulling the plug base, and the air outlet end is provided with a vertical linear servo mechanism perpendicular to the horizontal linear servo mechanism, the output end of the vertical linear servo mechanism is provided with a pipe bracket, and an adjustable pipe pressing frame is arranged right above the pipe bracket.

As a further technical scheme of the utility model, the tip of metal guide head is equipped with the circular conical surface, the inflation rubber ring hug closely in the border of circular conical surface root, the diameter of metal guide head, inflation rubber ring is along with the internal diameter of tubular product and is the direct proportion relation.

As a further technical scheme of the utility model, the whole appearance that is big drum form drum of expansion rubber ring, and the wall thickness at both ends is less than the wall thickness of interlude.

As a further technical scheme of the utility model, the inlet end have through threaded connection be used for in perpendicular sharp servomechanism's output end fixed connection's two set nut.

As a further technical scheme of the utility model, screwed joint surpasss end cap base terminal surface sets up, and surpass the part with be equipped with the sealing washer between the installation positioning seat.

As a further technical solution of the present invention, the pipe carrier is provided with V-shaped gullies for placing pipes, and the two side surfaces are vertical fitting surfaces for the plurality of pipe carriers arranged side by side, and the top surfaces of the two sides of the V-shaped gullies are horizontal surfaces.

As a further technical scheme of the utility model, adjustable tubular product compresses tightly the frame and includes the support for the fixed setting of perpendicular sharp servomechanism, swing joint has on the support with the tubular product compact heap that tubular product bracket shape is unanimous, the tubular product compact heap be connected with respectively with support swing joint's accommodate the lead screw and remove the guide pillar, accommodate the lead screw's top still is equipped with the regulation operation portion.

The utility model has the advantages of that: can come the crimping pipe fitting of quick adaptation different bores through replacement end cap subassembly, simultaneously, to the crimping pipe fitting of different bores or even eccentric pipe fitting, it can replace the end cap and can all cooperate with the port of crimping pipe fitting under the prerequisite of unmovable position, makes things convenient for the tester to carry out the gas tightness test of crimping pipe fitting in batches on the assembly line, has effectively improved crimping pipe fitting production efficiency, has improved shipment speed to intensity of labour has been reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the airtight plug.

Fig. 2 is a schematic front view of a sealing structure of the airtight plug.

Fig. 3 is a schematic view of the overall structure of the plug structure.

Fig. 4 is a schematic cross-sectional view of the plug structure.

Wherein: the plug comprises a plug base 1, an air inlet end 10, a double-positioning nut 100, an air outlet end 11, a replacement threaded opening 12, a threaded joint 3, an expansion rubber ring 4, a metal guide head 5, a conical surface 50, a sealing push ring 6, an installation positioning seat 7, a limiting ring 70, a horizontal linear servo mechanism 8, a vertical linear servo mechanism 9, a pipe bracket 13, an adjustable pipe pressing frame 14, a sealing ring 30, a support 140, a pipe pressing block 141, an adjusting screw rod 142, a moving guide column 143 and an adjusting operation part 144.

Detailed Description

The embodiments of the present invention will be described with reference to the accompanying drawings and related examples, but the embodiments of the present invention are not limited to the following examples, and the relevant essential components of the present invention related to the technical field should be regarded as known in the art, and can be known and grasped by those skilled in the art.

Referring to fig. 1 to 4, a sealing structure of an airtight plug comprises a plug base 1 for connecting a gas circuit, wherein one end of the plug base 1 is an air inlet end 10, the other end of the plug base is an air outlet end 11, a replacement threaded hole 12 is formed in the center of the air outlet end 11, the replacement threaded hole 11 is in threaded connection with a replacement plug assembly, the replacement plug assembly comprises a threaded joint 3 matched with the replacement threaded hole 11, a metal guide head 5 in threaded connection with the threaded joint 3 and sleeved with an expansion rubber ring 4, and a sealing push ring 6 movably sleeved between the expansion rubber ring 4 and the threaded joint 3, the plug base 1 is further movably sleeved with an installation positioning seat 7 near the air outlet end 11, the installation positioning seat 7 is provided with a circle of limiting rings 70 abutting against the sealing push ring 6, the air inlet end 10 is fixedly connected with a horizontal linear servo mechanism 8 for pushing and pulling the plug base 1, a vertical linear servo mechanism 9 perpendicular to the horizontal linear servo mechanism 8 is arranged close to the air outlet end 11, a pipe bracket 13 is arranged at the output end of the vertical linear servo mechanism 9, and an adjustable pipe pressing frame 14 is arranged right above the pipe bracket 13.

Referring to fig. 1 to 4, in the present invention, the plug base 1 is connected to the horizontal linear servo mechanism 8 for driving the metal guide head 5 fixedly connected to the other end of the plug base 1 to perform linear motion, and the installation positioning seat 7 is movably sleeved to the plug base 1, and the structure needs to be fixed, for example, installed on a base of a testing device, and the expansion rubber ring 4 is radially deformed due to the extrusion fit relationship among the limiting ring 70, the sealing push ring 6 and the metal guide head 5, especially due to the pushing action of the limiting ring 70 on the sealing push ring 6 under the traction action of the horizontal linear servo mechanism 8, so that after the metal guide head 5 enters the port of the crimping pipe, the deformation of the expansion rubber ring 4 can make the plug structure tightly connected to the crimping pipe, so as to utilize the air passage formed by the air inlet end 10 and the air outlet end 11 to vent into the air pipe, and then can carry out the gas tightness test, simplified the operation process of test, played fine help effect to the production efficiency that improves the pressure connecting pipe spare.

Referring to fig. 3 and 4, in order to realize rapid testing of crimping pipe fittings of different calibers, a corresponding replacement plug assembly is adjusted for the calibers of the batch of pipe fittings, specifically, specifications of corresponding diameters of a metal guide head 5 and an expansion rubber ring 4 which are directly matched with the crimping pipe fittings are replaced, and meanwhile, a sealing push ring 6 is adaptively replaced so that the expansion rubber ring 4 can be better extruded and the outer diameter of the crimping pipe fittings can be better adapted; for the pressure connecting pipes with different calibers, the central heights of the pressure connecting pipes on the same pipe bracket 13 are different, in order to meet the requirement of quickly adapting to the pressure connecting pipes with different calibers without changing the posture of an airtight test plug, the central height of the pressure connecting pipe placed on the pipe bracket 13 is changed through the action of the vertical linear servo mechanism 9 until the pressure connecting pipe can be aligned with the straight line of the center of the metal guide head 5, so that the pressure connecting pipe can be integrally aligned with the pressure connecting pipe without changing the height position of the airtight test plug, and the pressure connecting pipe can be clamped while being aligned with the airtight test plug through the downward pressing height of the adjustable pipe pressure frame 14, so that the air tightness is improved.

The utility model discloses an airtight structure of gas tightness end cap can the singleness implement the test, also can set up the multiunit and realize the simultaneous test of many crimping pipe fittings, therefore accommodation is wide, and the flexible operation is convenient.

Referring to fig. 3 and 4, as a further technical solution of the present invention, the end of the metal guide head 5 is provided with a conical surface 50, the expansion rubber ring 4 is tightly attached to the edge of the root of the conical surface 50, and the diameters of the metal guide head 5 and the expansion rubber ring 4 are in a proportional relation with the inner diameter of the pipe.

By utilizing the conical surface 50, the metal guide head 5 can better extend into the compression joint pipe fitting, and even when the compression joint pipe fitting is an eccentric part, the air tightness testing plug can still easily extend into the compression joint pipe fitting; from the perspective of improving the degree of adaptability, the metal guide head 5 and the expansion rubber ring 4 are all components of a closed structure directly matched with the crimping pipe fitting, so if the inner diameter of the crimping pipe fitting is increased, the diameters of the two structures need to be increased, but the sealing push ring 6 can be set to be in the maximum state at the beginning, the matching work of all the crimping pipe fittings in the diameter range can be met, and the direct proportional relation with the inner diameter of the crimping pipe fitting is not needed.

Referring to fig. 3 and 4, as a further embodiment of the present invention, the expansion rubber ring 4 is in the form of a large drum-shaped cylinder as a whole, and the wall thickness of both end portions is smaller than that of the middle portion.

This structure more is favorable to inflation rubber ring 4 to radial deformation under the extrusion, makes it realize the tight seal that expands with the inner wall contact of crimping pipe fitting more easily, simultaneously, also is favorable to improving the compressive property and the life of inflation rubber ring 4, makes it can satisfy the gas tightness test work of crimping pipe fitting more in batches.

Referring to fig. 3 and 4, as a further technical solution of the present invention, the air inlet end 10 is connected with a double positioning nut 100 for fixing and connecting with the output end of the vertical linear servo mechanism 9 through a screw thread.

By utilizing the double positioning nuts 100, the plug base 1 can be fixedly connected with the horizontal linear servo mechanism 8, especially fixedly connected with the rack structure on the horizontal linear servo mechanism 8, so that when the airtight testing plugs are arranged in multiple groups, the horizontal linear servo mechanism 8 can simultaneously drive the movement, expansion or release operation of the plurality of airtight testing plug structures through the connection with the rack structure, and the installation and maintenance of the airtight testing plugs are very convenient and reliable.

With reference to fig. 1 and 2, in the present invention, the horizontal linear servo mechanism 8 and the vertical linear servo mechanism 9 may be driven by a servo cylinder, a servo hydraulic cylinder, or a servo motor, and the linear displacement and the push-pull force are output.

Referring to fig. 3, as the utility model discloses further technical scheme, screwed joint 3 surpasss the setting of end cap base 1 terminal surface, just surpass the part with be equipped with sealing washer 30 between the installation positioning seat 7.

By utilizing the structure of the sealing ring 30, the threaded joints 3 with different specifications can ensure the air tightness between the replacement plug assembly and the plug base 1 on the basis of convenient replacement, and can reduce the stress change caused by direct extrusion between rigid parts to a certain extent, thereby prolonging the service life of parts.

Referring to fig. 1 and 2, as a further technical solution of the present invention, the pipe bracket 13 is provided with V-shaped gullies for placing pipes, two side surfaces are vertical mating surfaces for the plurality of pipe brackets to be arranged side by side, and top surfaces of two sides of the V-shaped gullies are horizontal surfaces.

By using the V-shaped gullies, the pipe bracket 13 can better support the crimping pipe fittings with different calibers, and the crimping pipe fittings can be accurately and stably placed on the V-shaped gullies and then can not be displaced randomly, the support stability of the crimping pipe fittings is improved in the lifting process of the pipe bracket 13, and the arrangement of the vertical matching surface and the horizontal top surface aims to better realize the purpose of batch testing of the crimping pipe fittings, so that the testing equipment can realize more batch testing work of the crimping pipe fittings by increasing the airtight testing plugs and the pipe bracket 13.

Referring to fig. 1 and 2, as a further technical solution of the present invention, the adjustable pipe clamping frame 14 includes a support 140 fixed to the vertical linear servo mechanism 9, the support 140 is movably connected to a pipe clamping block 141 having the same shape as the pipe bracket 13, the pipe clamping block 141 is connected to an adjusting screw 142 and a movable guide pillar 143, which are respectively movably connected to the support 140, and the top end of the adjusting screw 142 is further provided with an adjusting operation portion 144.

The adjustable tube pressing frame 14 is used to keep the pressure-fitting tube in a relatively stationary state after the pressure-fitting tube is lifted along with the tube holder 13, so that the airtight testing plug is inserted into the pressure-fitting tube in a reasonable posture to complete the butt joint, and therefore the tube pressing block 141 can move up and down linearly to align with the V-shaped gully on the tube holder 13 by moving the guide post 143, the height of the tube pressing block 141 can be adjusted accurately by the adjusting screw 142, the tube pressing block 141 can be clamped and pressed better if the shape of the tube pressing block 141 is consistent with that of the tube holder 13, and the adjustable operating portion 144 can be any structure convenient for rotating the adjusting screw 142, such as a crank turntable, a crank handle, a knob, and the like.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A closed structure of an air-tight plug comprises a plug base used for connecting an air path, wherein one end of the plug base is an air inlet end, the other end of the plug base is an air outlet end, a replacement threaded hole is formed in the center of the air outlet end, a replacement plug assembly is in threaded connection with the replacement threaded hole, the replacement plug assembly comprises a threaded joint matched with the replacement threaded hole, a metal guide head in threaded connection with the threaded joint and sleeved with an expansion rubber ring, and a sealing push ring movably sleeved between the expansion rubber ring and the threaded joint, an installation positioning seat is movably sleeved on the plug base close to the air outlet end, the installation positioning seat is provided with a circle of limiting ring abutted against the sealing push ring, a horizontal linear servo mechanism used for pushing and pulling the plug base is fixedly connected with the air inlet end, and a vertical linear servo mechanism perpendicular to the horizontal linear servo mechanism is arranged close to the air outlet end, the output end of the vertical linear servo mechanism is provided with a pipe bracket, and an adjustable pipe pressing frame is arranged right above the pipe bracket.

2. The sealing structure of the airtight plug according to claim 1, wherein the end of the metal guide head is provided with a conical surface, the expansion rubber ring is tightly attached to the edge of the root of the conical surface, and the diameters of the metal guide head and the expansion rubber ring are in a direct proportion relation with the inner diameter of the pipe.

3. The airtight plug sealing structure according to claim 1 or 2, wherein the expansion rubber ring is in the form of a large drum-shaped cylinder as a whole, and the wall thickness of the two end portions is smaller than that of the middle portion.

4. The closure structure of the airtight stopper as claimed in claim 1, wherein the air inlet end is connected with a double positioning nut for fixed connection to the output end of the vertical linear servo mechanism through a screw thread.

5. The structure for closing an airtight bulkhead according to claim 1, wherein the threaded joint is disposed beyond the end face of the bulkhead base, and a seal ring is disposed between the protruding portion and the mounting positioning seat.

6. The closure of an airtight bulkhead of claim 1, wherein the tubing carrier has V-shaped corrugations for receiving tubing, and wherein the two sides are vertical mating surfaces for the plurality of tubing carriers arranged in parallel, and top surfaces of the two sides of the V-shaped corrugations are horizontal surfaces.

7. The airtight structure of an airtight plug according to claim 1 or 6, wherein the adjustable tube clamp comprises a support fixedly arranged relative to the vertical linear servo mechanism, a tube clamp block with the same shape as the tube bracket is movably connected to the support, the tube clamp block is connected to an adjusting screw rod and a moving guide post which are respectively movably connected to the support, and an adjusting operation part is further arranged at the top end of the adjusting screw rod.