A porous oil separation element air tightness test fixture

Abstract

The utility model relates to test fixture technical field discloses a kind of porous position oil separation piece air tightness test fixture, including rack, the lower mould for placing test piece is equipped on rack;And the upper mould corresponding with its is equipped above lower mould;And be equipped with the first air cylinder drive upper mould and reciprocate up and down;And the side sealing mechanism that both sides of lower mould are equipped with and carry out sealing to both sides of test piece when testing;And the bottom of lower membrane is equipped with several bottom sealing mechanism, and the bottom of test piece is sealed when testing;Through the lower mould and the upper mould matched with it arranged on rack, the positioning and clamping of test piece are realized, and by the first air cylinder drive upper mould reciprocate up and down, it is convenient to quickly load and unload and compress tightly seal;The side sealing mechanism of both sides of lower mould can seal left and right side of test piece in testing process, prevent gas leakage;While the multiple bottom sealing mechanism of lower mould bottom is independently sealed to test piece bottom, to form all-around sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of testing fixture technology, and specifically to a multi-hole oil distribution component airtightness testing fixture. Background Technology

[0002] A multi-hole oil distributor is a flow-dividing element used in hydraulic or lubrication systems. Its main body is typically a block or tubular structure with a main oil passage inside and multiple distribution holes or interfaces evenly distributed on its outer wall. During operation, the input oil is distributed to each distribution hole through the main oil passage, thus achieving a one-inlet-multiple-outlet oil flow.

[0003] The following problems exist in the current market: the oil separator has a complex structure and is not easy to fix; there are many small holes with different directions, making sealing difficult; the sealing ring at the position of the large hole sealing ring is deformed and easily affects the airtightness test;

[0004] The technical problem to be solved by this utility model is to provide a test fixture for the airtightness of a multi-hole oil distribution component. Utility Model Content

[0005] The technical problem this invention addresses is: providing a testing fixture for the airtightness of multi-hole oil separators; the fixture uses a lower mold and a matching upper mold arranged on a frame to position and clamp the test piece, and a first cylinder drives the upper mold to reciprocate up and down, facilitating quick loading, unloading, and sealing; the side sealing mechanisms on both sides of the lower mold can seal the left and right sides of the test piece during testing to prevent gas leakage; simultaneously, multiple bottom sealing mechanisms at the bottom of the lower mold independently seal the bottom of the test piece, thus forming a comprehensive sealing effect; this structure can meet the sealing requirements of multi-hole oil separators in airtightness testing, improving testing accuracy and reliability.

[0006] A multi-hole oil distribution component airtightness testing fixture includes a frame, a lower mold for placing the test piece on the frame, an upper mold corresponding to the lower mold above the lower mold, a first cylinder driving the upper mold to reciprocate up and down, side sealing mechanisms for sealing the sides of the test piece during testing on both sides of the lower mold, and a plurality of bottom sealing mechanisms for sealing the bottom of the test piece during testing at the bottom of the lower mold.

[0007] Preferably, the side sealing mechanism includes a side seat; and a second cylinder is horizontally provided on the side seat; and the piston rod of the second cylinder is connected to a first sealing head to block and seal the holes on the side of the test piece.

[0008] Preferably, the bottom sealing mechanism includes a third cylinder with the piston rod facing upward; and the piston rod of the third cylinder is connected to a plurality of second sealing heads to block and seal the bottom holes of the test piece.

[0009] Preferably, the first sealing head is annular and has a sealing bottom.

[0010] Preferably, the second sealing head is in the shape of a beveled cylinder; and the material used for the second sealing head is silicone.

[0011] Preferably, the lower mold includes several spaced-apart support seats; and the test piece is placed horizontally on the several support seats.

[0012] Preferably, the frame is provided with a number of positioning lower columns at intervals; and the outer edge of the upper mold is provided with positioning upper columns corresponding to the positioning lower columns; and the first cylinder drives the upper mold to move downward, so that the positioning upper column and the positioning lower column abut and are positioned.

[0013] Preferably, the top of the frame is provided with several guide posts vertically; and a sleeve is provided that slides up and down with the guide posts; and the sleeve is fixedly installed with the upper mold.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The multi-hole oil separator air tightness testing fixture of this utility model achieves the positioning and clamping of the test piece through the lower mold arranged on the frame and the upper mold that cooperates with it. The upper mold is driven by the first cylinder to move up and down reciprocally, which facilitates quick loading, unloading and pressing for sealing. The side sealing mechanisms on both sides of the lower mold can seal the left and right sides of the test piece during the test to prevent gas leakage. At the same time, the multiple bottom sealing mechanisms set at the bottom of the lower mold can independently seal the bottom of the test piece, thereby forming an all-round sealing effect. This structure can meet the sealing requirements of multi-hole oil separators in air tightness testing, and improve the testing accuracy and reliability.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the support structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the third cylinder structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the first sealing head structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the second sealing head structure of this utility model.

[0022] In the diagram: 1. Frame; 3. Upper mold; 4. First cylinder; 7. Side seat; 8. Second cylinder; 9. First sealing head; 10. Third cylinder; 11. Second sealing head; 12. Bearing seat; 13. Lower positioning column; 14. Upper positioning column; 15. Guide column; 16. Sleeve. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this disclosure.

[0025] Please see Figures 1-5 In this embodiment of the present invention, a multi-hole oil distribution component airtightness testing fixture includes a frame 1; a lower mold for placing the test piece is provided on the frame 1; an upper mold 3 corresponding to the lower mold is provided above the lower mold; a first cylinder 4 is provided to drive the upper mold 3 to reciprocate up and down; and side sealing mechanisms for sealing the sides of the test piece during testing are provided on both sides of the lower mold; and a plurality of bottom sealing mechanisms for sealing the bottom of the test piece during testing are provided at the bottom of the lower mold.

[0026] Specifically, the multi-hole oil separator airtightness testing fixture uses a lower mold and a mating upper mold 3 arranged on the frame 1 to position and clamp the test piece. The upper mold 3 is driven by a first cylinder 4 to reciprocate up and down, facilitating quick loading, unloading, and sealing. Side sealing mechanisms on both sides of the lower mold seal the left and right sides of the test piece during testing to prevent gas leakage. Simultaneously, multiple bottom sealing mechanisms at the bottom of the lower mold independently seal the bottom of the test piece, creating a comprehensive sealing effect. This structure meets the sealing requirements of multi-hole oil separators in airtightness testing, improving testing accuracy and reliability.

[0027] The prerequisite for achieving airtightness testing is the formation of a sealed space, which requires certain sealing conditions. Before sealing, the product needs to be positioned to fix the orientation of all holes, then the sealed space is formed, and finally, one end is opened and the product is inflated to test the leakage rate.

[0028] The fixture consists of upper and lower molds and a frame control unit. The operator places the product in place, presses the start button with both hands to start the control. The first cylinder drives the upper mold to press down and fix the product. The calculator starts timing. After 3 seconds of stabilization, the bottom sealing mechanism and the side sealing mechanism advance to seal the product. The calculator starts calculating. One end is opened to connect to the air tightness testing instrument. Inflation is started. The leakage rate is tested within 20 seconds. After completion, the cylinder retracts and the product is manually removed.

[0029] Furthermore, the side sealing mechanism includes a side seat 7; and a second cylinder 8 is horizontally provided on the side seat 7; and the piston rod of the second cylinder 8 is connected to a first sealing head 9 to block and seal the holes on the side of the test piece.

[0030] Specifically, by horizontally mounting a second cylinder 8 on the side seat 7, the piston rod of the second cylinder pushes the first sealing head 9 to precisely seal the holes on the side of the test piece, thereby effectively preventing lateral gas leakage during airtightness testing. This structure not only achieves automation and controllability of the sealing action, but also adapts to the side hole positions of test pieces of different specifications, improving the sealing reliability and testing stability of the fixture.

[0031] Furthermore, the bottom sealing mechanism includes a third cylinder 10 with the piston rod facing upward; and the piston rod of the third cylinder 10 is connected to several second sealing heads 11 to block and seal the bottom holes of the test piece.

[0032] Specifically, by setting a third cylinder 10 with the piston rod pointing upward, several second sealing heads 11 are driven to move upward, thereby simultaneously blocking and sealing multiple holes at the bottom of the test piece, ensuring the bottom sealing effect during the test. This design not only achieves synchronous sealing of multiple holes and improves test efficiency, but also enhances the integrity and stability of the overall seal, further ensuring the accuracy of the airtightness test results.

[0033] Furthermore, the first sealing head 9 is annular in shape and has a sealing feature at the bottom.

[0034] Specifically, the first sealing head 9 is designed as a ring shape with a sealing surface at the bottom, so that it can form a uniform and complete contact surface when blocking the side holes of the test piece, thereby improving the tightness and reliability of the lateral seal, effectively preventing gas leakage, and adapting to the sealing requirements of multi-hole test pieces, improving the accuracy and stability of air tightness testing; a sealing ring can also be set on the surface of the first sealing head 9 to form a better sealing effect with the product holes.

[0035] Furthermore, the second sealing head 11 is in the shape of an inclined cylinder; and the material used for the second sealing head 11 is silicone.

[0036] Specifically, the second sealing head 11 is designed as a sloping cylinder and made of silicone material. This allows it to fit tightly against the hole at the bottom of the test piece when sealing it, fully utilizing the flexibility and elasticity of silicone to achieve good sealing and buffering effects. This design not only adapts to slight differences in hole size but also improves the reliability and durability of the bottom seal, thereby ensuring the accuracy and stability of the airtightness test. The second sealing head 11 can be replaced periodically to maintain the sealing effect.

[0037] Furthermore, the lower mold includes several spaced-apart support bodies 12; and the test piece is placed horizontally on the several support bodies 12.

[0038] Specifically, by designing the lower mold as several spaced support seats 12, the test piece can be placed horizontally on multiple support seats 12 to achieve stable support and uniform force distribution. This structure not only facilitates the positioning and fixing of the test piece, but also ensures that the upper mold 3, the side sealing mechanism, and the bottom sealing mechanism can apply pressure evenly during the sealing process, thereby improving the accuracy and reliability of the overall airtightness test.

[0039] Furthermore, the frame 1 is provided with a number of positioning lower posts 13 at intervals; and the outer edge of the upper mold 3 is provided with positioning upper posts 14 corresponding to the positioning lower posts 13; and the first cylinder 4 drives the upper mold 3 to move downward, so that the positioning upper posts 14 and the positioning lower posts 13 abut and position each other.

[0040] Specifically, by setting several lower positioning columns 13 at intervals on the frame 1 and setting corresponding upper positioning columns 14 on the outer edge of the upper mold 3, when the first cylinder 4 drives the upper mold 3 to move downward, the upper positioning columns 14 and the lower positioning columns 13 abut against each other, realizing the precise positioning and stable support of the upper mold 3. This structure not only ensures the positional accuracy of the upper mold 3 during the up-and-down reciprocating motion, but also improves the sealing effect of the side and bottom sealing mechanisms on the test piece, thereby enhancing the reliability and repeatability of the airtightness test.

[0041] Furthermore, the top of the frame 1 is provided with several guide posts 15 vertically; and a sleeve 16 is provided that slides up and down with the guide posts 15; and the sleeve 16 is fixedly installed with the upper mold 3.

[0042] Specifically, several guide posts 15 are vertically arranged at the top of the frame 1, and a sleeve 16 that can slide up and down is used in conjunction with the sleeve 16. The sleeve 16 is fixedly installed with the upper mold 3, so that the upper mold 3 can slide stably along the guide posts 15 during the up and down movement, avoiding deviation or tilting. This design not only ensures the movement accuracy and stability of the upper mold 3, but also improves the sealing consistency of the side sealing mechanism and the bottom sealing mechanism on the test piece, thereby ensuring the reliability and repeatability of the airtightness test.

[0043] Preferably, the cylinder propulsion used in the above embodiments can also be replaced by an electric motor for propulsion drive.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A porous oil separator air tightness test fixture, comprising a rack (1), characterized in that, The rack (1) is provided with a lower mold for placing a test piece; and the upper side of the lower mold is provided with a corresponding upper mold (3); and a first cylinder (4) is arranged to drive the upper mold (3) to move up and down; and the two sides of the lower mold are provided with side sealing mechanisms for sealing the two sides of the test piece during testing; and the bottom of the lower mold is provided with a plurality of bottom sealing mechanisms for sealing the bottom of the test piece during testing.

2. The porous oil-seal gas-tightness test fixture of claim 1, wherein, The side sealing mechanism comprises a side seat body (7); a second cylinder (8) is horizontally arranged on the side seat body (7); and the piston rod of the second cylinder (8) is connected with a first sealing head (9) to block and seal the hole position on the side of the test piece.

3. The porous oil-seal gas-tightness test fixture of claim 1, wherein, The bottom sealing mechanism comprises a third cylinder (10) with the piston rod arranged upward; and the piston rod of the third cylinder (10) is connected with a plurality of second sealing heads (11) to block and seal the hole position on the bottom of the test piece.

4. The porous oil-seal gas-tightness test fixture of claim 2, wherein, The first sealing head (9) is in the shape of a circular ring with a sealed bottom.

5. The porous oil-seal gas-tightness test fixture of claim 3, wherein, The second sealing head (11) is in the shape of an inclined cylindrical body; and the material of the second sealing head (11) is silica gel.

6. The porous oil-seal gas-tightness test fixture of claim 1, wherein, The lower mold comprises a plurality of spaced-apart bearing seat bodies (12); and the test piece is horizontally placed on the plurality of bearing seat bodies (12).

7. The porous oil-seal gas-tightness test fixture of claim 1, wherein, The rack (1) is provided with a plurality of positioning lower columns (13) at intervals; the outer edge of the upper mold (3) is provided with corresponding positioning upper columns (14); and the first cylinder (4) drives the upper mold (3) to move downward, so that the positioning upper columns (14) and the positioning lower columns (13) are in abutment and positioning.

8. The porous oil-seal gas-tightness test fixture of claim 1, wherein, The top of the rack (1) is vertically provided with a plurality of guide columns (15); a sleeve (16) is arranged to slide up and down with the guide columns (15); and the sleeve (16) is fixedly installed with the upper mold (3).

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