阅读说明：本技术 一种活塞气密性检查设备 (Piston gas tightness check out test set ) 是由 余昌国 汪欢 于 2020-11-05 设计创作，主要内容包括：本发明公开了一种活塞气密性检查设备,包括：一容器,其顶部敞口,用于放置液体；一夹持部,用于夹持所述活塞,该夹持部倾斜设置,其与竖直方向之间的夹角大于0度且不大于30度；一供气部,用于向所述活塞内通入气体；一升降部,用于带动所述夹持部移动,以让所述活塞进入或脱离所述容器。本发明避免对容器内水过度冲击,测试准确。(The invention discloses a piston airtightness inspection apparatus, which includes: a container with an open top for holding liquid; the clamping part is used for clamping the piston, is obliquely arranged, and has an included angle with the vertical direction of more than 0 degree and not more than 30 degrees; the gas supply part is used for introducing gas into the piston; and the lifting part is used for driving the clamping part to move so as to enable the piston to enter or separate from the container. The invention avoids excessive impact on water in the container and has accurate test.)

1. A piston airtightness inspection apparatus, characterized by comprising:

a container with an open top for holding liquid;

the clamping part is used for clamping the piston, is obliquely arranged, and has an included angle with the vertical direction of more than 0 degree and not more than 30 degrees;

the gas supply part is used for introducing gas into the piston;

and the lifting part is used for driving the clamping part to move so as to enable the piston to enter or separate from the container.

2. The piston airtightness inspection apparatus according to claim 1, wherein the clamping portion includes:

at least one supporting rod, wherein the supporting rod is obliquely arranged, and an included angle between the supporting rod and the vertical direction is more than 0 degree and not more than 30 degrees;

the cross bar is connected with the supporting rod; the cross rod or the supporting rod is connected with the output end of the lifting part;

and the clamping unit is arranged on the cross rod and is positioned above the container.

3. The piston airtightness inspecting apparatus according to claim 2, further comprising an angle adjusting mechanism for adjusting an inclination angle of the support rod.

4. The piston airtightness inspection apparatus according to claim 3, wherein the angle adjustment mechanism includes:

the fixing block is at least provided with two first mounting holes, the two first mounting holes are symmetrically arranged, and each first mounting hole is arc-shaped; the fixed block is connected with the output end of the lifting part;

the connecting block is connected with the supporting rod and at least provided with two second mounting holes matched with the first mounting holes;

and the at least two bolts respectively penetrate through the two first mounting holes and are connected with the two second mounting holes.

5. The piston airtightness inspection apparatus according to claim 4, wherein the elevating portion includes:

a support;

the sliding rod is connected with the bracket in a sliding manner and is connected with the fixed block;

and the output end of the first air cylinder is connected with the sliding rod.

6. The piston airtightness inspection apparatus according to claim 2, wherein at least a lower surface of the cross bar is curved.

7. The piston airtightness inspection apparatus according to claim 2, wherein the clamping unit includes:

the mounting seat is arranged on the cross rod and is positioned above the container; an air outlet hole is arranged in the mounting seat and is communicated with the air supply part;

the pressing plate is positioned above the mounting seat;

and the second cylinder is connected with the supporting rod, and the output end of the second cylinder is connected with the pressing plate.

8. The piston airtightness inspection apparatus according to claim 7, wherein a seal ring is provided on the mount base, the seal ring being located outside the air outlet hole.

9. The piston airtightness inspection apparatus according to claim 7, wherein the lower surface of the pressure plate is provided with an elastic layer.

10. The piston airtightness inspection apparatus according to claim 7, further comprising:

the marking pen is positioned above the mounting seat;

and the third cylinder is connected with the supporting rod, and the output end of the third cylinder is connected with the marking pen.

Technical Field

The invention relates to the technical field of piston production, in particular to piston airtightness inspection equipment.

Background

The piston is a reciprocating part in the cylinder body of the automobile engine, the basic structure of the piston can be divided into three parts of a head part, a skirt part and a piston pin boss, the top of the piston is the main part forming a combustion chamber, the shape of the piston is related to the selected combustion chamber form, and the gasoline engine mostly adopts a flat-top piston, and has the advantage of small heat absorption area.

The piston is widely applied, for example, common machines such as automobiles or hydraulic push rods and the like, one of indispensable devices for producing the piston is a piston tightness detection device, but the existing piston tightness detection device has some defects.

In chinese patent application No.: CN201922066000.2 discloses a piston seal detection device, comprising a base plate, the equal fixedly connected with supporting shoe in the left and right sides at bottom plate top, two the rotation groove has all been seted up to the relative one side of supporting shoe, the inside in rotation groove is connected with the turning block, two the equal fixedly connected with in the relative one side of turning block extends the piece, two the equal fixedly connected with telescopic rod in the relative one side of extension piece, the equal fixedly connected with backup pad in the left and right sides of bottom plate, left side the piece is placed to the top fixedly connected with of backup pad, place the bottom fixedly connected with regulating block of piece, the sliding tray has been seted up to the bottom of regulating block. The technical scheme is that the lamp light is used for irradiation and observation. And when the test is carried out, partial areas are easy to omit, the observation is difficult, and the measurement precision is not high.

As another example, in chinese patent application No.: CN202010123594.0 discloses a piston assembly's air tightness test device, include the upper end for open rectangular shape basin, connect side by side the frame of rectangular shape basin one side, set up and be in high-order operation platform in the frame, the opposite side of rectangular shape basin is followed the length direction of rectangular shape basin is fixed with compressed air house steward, interval distribution has the compressed air output branch pipe of a plurality of quantity on the compressed air house steward, the delivery outlet of compressed air output branch pipe is connected with retractable coiled hose, be provided with the compressed air switch on the compressed air output branch pipe, be located the compressed air switch with be provided with the manometer on the pipeline between the delivery outlet of compressed air output branch pipe. According to the technical scheme, air tightness detection is carried out by using water, however, when the piston descends, impact on water is caused, water waves are large, and the test is not accurate. In view of this, the present application is proposed.

Disclosure of Invention

In order to solve at least one technical problem in the background art, the invention provides the piston air tightness inspection equipment which is high in test efficiency and high in precision.

The invention provides a piston airtightness inspection apparatus, which comprises:

a container with an open top for holding liquid;

the clamping part is used for clamping the piston, is obliquely arranged, and has an included angle with the vertical direction of more than 0 degree and not more than 30 degrees;

the gas supply part is used for introducing gas into the piston;

and the lifting part is used for driving the clamping part to move so as to enable the piston to enter or separate from the container.

Preferably, the clamping portion includes:

at least one supporting rod, wherein the supporting rod is obliquely arranged, and an included angle between the supporting rod and the vertical direction is more than 0 degree and not more than 30 degrees;

the cross bar is connected with the supporting rod; the cross rod or the supporting rod is connected with the output end of the lifting part;

and the clamping unit is arranged on the cross rod and is positioned above the container.

Preferably, the apparatus further comprises an angle adjusting mechanism for adjusting the inclination angle of the support bar.

Preferably, the angle adjusting mechanism includes:

the fixing block is at least provided with two first mounting holes, the two first mounting holes are symmetrically arranged, and each first mounting hole is arc-shaped; the fixed block is connected with the output end of the lifting part;

the connecting block is connected with the supporting rod and at least provided with two second mounting holes matched with the first mounting holes;

and the at least two bolts respectively penetrate through the two first mounting holes and are connected with the two second mounting holes.

Preferably, the elevating part includes:

a support;

the sliding rod is connected with the bracket in a sliding manner and is connected with the fixed block;

and the output end of the first air cylinder is connected with the sliding rod.

Preferably, at least the lower surface of the cross bar is arcuate.

Preferably, the clamping unit includes:

the mounting seat is arranged on the cross rod and is positioned above the container; an air outlet hole is arranged in the mounting seat and is communicated with the air supply part;

the pressing plate is positioned above the mounting seat;

and the second cylinder is connected with the supporting rod, and the output end of the second cylinder is connected with the pressing plate.

Preferably, a sealing ring is arranged on the mounting seat and is positioned on the outer side of the air outlet hole.

Preferably, the lower surface of the pressing plate is provided with an elastic layer.

Preferably, the apparatus further comprises:

the marking pen is positioned above the mounting seat;

and the third cylinder is connected with the supporting rod, and the output end of the third cylinder is connected with the marking pen.

The beneficial effects brought by one aspect of the invention are as follows:

the piston is clamped and fixed by the clamping part. A suitable amount of water is placed in the container. And gas is introduced into the piston by the gas supply part. The lifting part is used for driving the clamping part to move, so that the piston enters water. And then observing whether bubbles exist or not, and detecting the air tightness of the piston.

By inclining the clamping portion, when the clamping portion is like water, the water wave caused by the inclination is small, and the water surface fluctuation is small. Therefore, whether bubbles are discharged or not can be quickly, effectively and accurately found, and omission is avoided. And the air tightness test of the piston is accurate.

Drawings

FIG. 1 is a schematic diagram of a piston with detection;

FIG. 2 is a schematic structural diagram disclosed in the present invention;

FIG. 3 is a front view of the present disclosure;

FIG. 4 is a side view of the present disclosure;

FIG. 5 is a schematic view of the structure of the piston entering the chamber disclosed in the present invention;

FIG. 6 is a schematic view of a clamping portion according to the present disclosure;

FIG. 7 is a side view of the clamping portion of the present disclosure;

FIG. 8 is a schematic structural diagram of a connecting block and a fixing block disclosed by the invention;

FIG. 9 is a schematic structural diagram of a connecting block disclosed in the present invention;

FIG. 10 is a schematic view of the structure of the mounting seat and the cross bar disclosed in the present invention;

fig. 11 is a schematic structural diagram of a pressure plate, a second air cylinder and the like disclosed by the invention.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in the present application may be combined with each other; the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 11, the present invention provides a piston airtightness inspecting apparatus including:

a container 1, which is open at the top, for holding a liquid, such as water; and the clamping part is used for clamping the piston A, is obliquely arranged, and has an included angle with the vertical direction which is greater than 0 degree and not greater than 30 degrees. And may be about 5-15 degrees.

The gas supply part 2 is used for introducing gas into the piston A; the high pressure gas can be supplied using existing gas supply equipment.

And the lifting part is used for driving the clamping part to move so as to enable the piston A to enter or separate from the container 1.

The piston A is held and fixed by a holding portion. A suitable amount of water is placed in the container 1. Gas is introduced into the piston a by the gas supply portion 2. The lifting part is used for driving the clamping part to move, so that the piston A enters water. And then observing whether bubbles exist or not, and detecting the air tightness of the piston A.

By inclining the clamping portion, when the clamping portion enters water, the water waves caused by the inclination of the clamping portion are small, and the water surface fluctuation is small. Therefore, whether bubbles are discharged or not can be quickly, effectively and accurately found, and omission is avoided. And the air tightness test of the piston A is accurate.

As one of ordinary skill in the art will appreciate, the present embodiment also allows testing of the air tightness of other components, not limited to piston A.

With reference to fig. 3 and 6, further, the clamping portion includes:

the two support rods 3 are obliquely arranged, and the included angle between each support rod 3 and the vertical direction is more than 0 degree and not more than 30 degrees; the cross bar 4 is connected with the support bar 3; the cross rod 4 or the support rod 3 is connected with the output end of the lifting part; and the clamping unit is arranged on the cross rod 4 and is positioned above the container 1. The inclination angle of the supporting rod 3 can be flexibly adjusted by combining the size of the piston A, the size of the supporting rod 3, the size of the cross rod 4 and the like.

The piston a is clamped by a clamping unit. The lifting part is used for driving the supporting rod 3 to descend. Because the supporting rod 3 inclines, the excessive impact on the water in the container 1 is avoided, and the water wave is small. The bubble is conveniently observed. The test accuracy is ensured.

Further, the equipment also comprises an angle adjusting mechanism which is used for adjusting the inclination angle of the supporting rod 3. The inclination angle of the clamping part can be flexibly adjusted according to the sizes of different pistons A, and the impact on water in the container 1 is reduced.

With reference to fig. 6, 7 and 8, further, the angle adjusting mechanism includes:

the fixing block 5 is provided with at least two first mounting holes 501, the two first mounting holes 501 are symmetrically arranged, and each first mounting hole 501 is arc-shaped; the fixed block 5 is connected with the output end of the lifting part; the number of the fixing blocks 5 can be two, and the fixing blocks are symmetrically distributed.

The connecting block 6 is connected with the supporting rod 3, and at least two second mounting holes 601 matched with the first mounting holes 501 are formed in the connecting block; the connecting block 6 is located between the two fixing blocks 5 and connected with the two support rods 3. Two second mounting holes 601 are arranged at two ends of the connecting block 6.

And four bolts 7 respectively passing through the four first mounting holes 501 and connected with the four second mounting holes 601.

When the inclination angle needs to be adjusted, the bolt 7 is removed. The inclination angles of the connecting block 6 and the supporting rod 3 are adjusted, and then the bolt 7 passes through the first mounting hole 501 and is in threaded connection with the second mounting hole 601. The connecting block 6 is connected with the fixing block 5.

With reference to fig. 3, the elevating portion includes:

a support 8; as a support. The container 1 may be connected to a support 8. The sliding rod 9 is connected with the bracket 8 in a sliding manner and is connected with the fixed block 5, and the sliding rod 9 can be vertically arranged; and the output end of the first air cylinder 10 is connected with the sliding rod 9. The first cylinder 10 is used for driving the sliding rod 9 and the fixed block 5 to move, and further driving the clamping part to lift.

Referring to fig. 10, at least the lower surface of the cross bar 4 is curved. The cross bar 4 may be cylindrical. Therefore, when the water enters the container 1, the impact on the water surface is reduced, the water waves are reduced, and the inaccuracy in testing is avoided.

With reference to fig. 6 and 10, the clamping unit includes:

the mounting seat 11 is arranged on the cross rod 4 and is positioned above the container 1; an air outlet hole 1101 is formed in the mounting seat 11, and the air outlet hole 1101 is communicated with the air supply part 2; a pressing plate 12 located above the mounting base 11; and the second air cylinder 13 is connected with the supporting rod 3, and the output end of the second air cylinder 13 is connected with the pressing plate 12. The second cylinder 13 can be connected with the connecting block 6, and is convenient to lift.

Piston A is placed on the mounting seat, and air outlet 1101 is communicated with the interior of piston A. The second cylinder 13 is used for driving the pressing plate 12 to descend to be in contact with the piston A, so that shaking is avoided, and gas leakage is avoided. Gas is introduced from the gas supply section 2. Then, the air enters the container 1, whether bubbles exist or not is observed, and air tightness detection is carried out.

For testing accuracy, a sealing ring 14 is arranged on the mounting seat 11, and the sealing ring 14 is located outside the air outlet 1101. And a sealing ring 14 is added, so that gas is prevented from leaking from the contact part of the piston A and the mounting seat 11, and the testing accuracy is ensured.

Further, the lower surface of the pressing plate 12 is provided with an elastic layer. Avoiding damage to the piston a. The pressing piston A is more stable. Preventing the piston a from tilting.

Further, with reference to fig. 6 and 11, the apparatus further includes:

a marking pen 15 located above the mounting seat 11; and the third air cylinder 16 is connected with the support rod 3, and the output end of the third air cylinder 16 is connected with the marking pen 15. After the test is finished, the third air cylinder 16 is utilized to drive the marking pen 15 to descend, the piston A is marked, whether the test is qualified or not is indicated, and the follow-up collection is facilitated. The third cylinder 16 can be connected with a connecting block or a supporting rod and the like, so that the lifting is convenient.

Piston a is placed on mount 11. The second cylinder 13 is used to drive the pressure plate 12 to descend to press the piston A. Gas is introduced into the piston a through the gas supply portion 2 and the gas outlet hole 1101. Water is added to the vessel 1. The first cylinder 10 and the like are used for driving the support rod 3, the mounting seat 11, the piston A and the like to descend, and the mounting seat 11 and the piston A are placed in the container 1. And observing whether bubbles are discharged. After the test is completed, marking is performed using the marking pen 15. And then, driving the piston A and the like to rise, separating the pressure plate 12 from the piston A, and taking down the piston A.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.