Leakage-free high-pressure test equipment for hydraulic steel pipe of injection molding machine

Abstract

The utility model discloses a leak-free high-pressure test device for a hydraulic steel pipe of an injection molding machine, which comprises an operation table, a push guide mechanism, a one-way sealing mechanism and a spring adjusting mechanism, and is characterized in that the push guide mechanism comprises a hydraulic cylinder, a push plate, a sliding sleeve, a mounting sleeve assembly and a guide rail; the one-way sealing mechanism comprises a sealing pipe, a supporting seat, a sliding rod, a single sealing plate and a matching plate, a hydraulic cylinder drives a push plate to push a steel pipe through a sliding sleeve, a guide rail and a mounting sleeve assembly, it is ensured that the steel pipe is stably pushed along a guide track, the problem of unstable pushing in traditional equipment is effectively solved, and the one-way sealing mechanism effectively prevents high-pressure gas leakage and improves the safety. The sliding rod slides in the supporting seat, the opening and closing process of the sealing structure is controlled, action is sensitive, control is accurate, the position of the pressing plate is adjusted through the threaded sleeve, the compression state of the sealing spring is changed, and therefore the pre-tightening force of the sealing system is adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to high pressure test technical field more specifically, it relates to a kind of high pressure test equipment of injection molding machine hydraulic steel pipe without leakage. BACKGROUND

[0002] In the prior art, injection molding machine hydraulic steel pipe's no-leakage high pressure test equipment has some design and operation problems in practical application, mainly reflected in the unstable pushing of steel pipe, the excessive pressure of gage detection affects test results and the difficult balance discharge of excessive gas pressure, these problems not only affect the stability of equipment, but also can lead to inaccurate test results and inconvenient operation.

[0003] In the existing test equipment, gage detection usually adopts gas pressure detection to judge the sealing property of steel pipe, however, due to the excessively high pressure setting, the pressure of gage detection often exceeds the pressure resistance of steel pipe, can cause instantaneous damage or deformation of steel pipe in the test process, thereby affecting the accuracy of test results, high pressure test not only can damage steel pipe itself, but also can lead to false alarm, cause the failure of equipment or product quality control.

[0004] When gas pressure is too large, gas generated in the test process is difficult to discharge rapidly, especially in the process of gage detection and high pressure test, the excessively high gas pressure in the equipment will lead to poor discharge of gas, and the difficult balance discharge of gas not only can cause gas pressure accumulation in the equipment, but also can affect the working stability and safety of equipment, if gas cannot be discharged in time and effectively, it can cause the safety hazard of excessively high gas pressure, and even can cause equipment damage. UTILITY MODEL CONTENTS

[0005] (I) technical problem solved

[0006] In view of the problems in the prior art, the utility model provides a kind of high pressure test equipment of injection molding machine hydraulic steel pipe without leakage to solve the technical problems, such as unstable pushing of steel pipe, excessive pressure of gage detection affects results and difficult balance discharge of excessive gas pressure, mentioned in the background art.

[0007] (II) technical scheme

[0008] In order to achieve the above object, the utility model provides following technical scheme: A kind of no-leakage high-pressure test equipment of injection molding machine hydraulic steel pipe, including operation platform, push guiding mechanism, one-way sealing mechanism and spring adjusting mechanism, the push guiding mechanism includes hydraulic cylinder, push plate, sliding sleeve, mounting sleeve assembly and guide rail, guide rail and hydraulic cylinder are installed at the top end of operation platform, push plate is installed at one end of hydraulic cylinder, sliding sleeve is slidably installed on guide rail, mounting sleeve assembly is installed at the top end of sliding sleeve, push plate is connected with one end of mounting sleeve assembly, external steel pipe is arranged in mounting sleeve assembly, the one-way sealing mechanism includes sealing pipe, support seat, sliding rod, single seal plate and cooperation plate, support seat is installed at one end of sealing pipe, sliding rod is slidably installed in support seat, and one end of sliding rod extends into sealing pipe, cooperation plate is cooperatively installed in sealing pipe, single seal plate is installed on the side wall of sliding rod, and single seal plate and cooperation plate are cooperatively arranged as one-way sealing.

[0009] The utility model further sets up, spring adjusting mechanism includes guide rod, pressing plate, threaded sleeve and sealing spring, guide rod is installed at one end of support seat, pressing plate is slidably installed on guide rod, and pressing plate is cooperatively slidably guided with guide rod, sealing spring is installed between support seat and pressing plate, threaded sleeve is threadedly connected on sliding rod, threaded sleeve can push pressing plate to sealing spring, changes the pre-tightening force of sealing spring.

[0010] The utility model further sets up, the top end of operation platform is equipped with support sleeve and fixed sleeve, and the top end of support sleeve and fixed sleeve is equipped with detection sleeve, and detection sleeve forms steel pipe test space, provides gas injection and outlet passage.

[0011] The utility model further sets up, the installation sleeve assembly is oppositely arranged with detection sleeve, and the steel pipe installed in installation sleeve assembly is pushed into detection sleeve, and installation sleeve assembly fixes steel pipe while protecting its surface, to ensure that steel pipe is positioned correctly.

[0012] The utility model further sets up, the side wall top end of detection sleeve is equipped with gas injection pipe and outlet pipe, and external gas injection equipment can be cooperatively communicated with gas injection pipe, gas injection pipe is connected external gas source, provides the high pressure gas required for testing.

[0013] The utility model further sets up, the bottom end of sealing pipe is equipped with connecting pipe, and connecting pipe is communicated with exhaust pipe, connecting pipe connects sealing pipe and exhaust system, to ensure that system gas path is unobstructed.

[0014] The utility model further sets up, single seal plate is equipped with directional frame, directional rail is installed on the inner wall of sealing pipe, directional frame is cooperatively slidably guided on directional rail, directional rail guides directional frame to move along correct track, to improve the stability of sealing system.

[0015] The utility model further provides for, the bottom end of operation platform is hidden and is equipped with the chassis, and the bottom end installation of chassis is equipped with the supporting plate, and the supporting plate increases the contact area of chassis and ground, improves the overall stability.

[0016] (Three) beneficial effects

[0017] Compared with the prior art, the utility model provides a kind of high pressure test equipment without leakage of injection molding machine hydraulic steel pipe, with following beneficial effects:

[0018] The utility model sets up push guiding mechanism, and hydraulic cylinder drives push plate to push steel pipe by sliding sleeve, guide rail and mounting sleeve assembly, ensure that steel pipe is steadily pushed along guide track, effectively solve the problem of unstable pushing in traditional equipment, and mounting sleeve assembly can be fixed and protect the outer surface of steel pipe, avoid deviation or surface damage in pushing process, ensure that steel pipe is accurately pushed into detection sleeve, improve test positioning accuracy.

[0019] The utility model sets up one-way sealing mechanism, and single seal plate and cooperation plate synergic effect realize one-way sealing under the driving of sliding rod, effectively prevent high pressure gas leakage, ensure that test environment is airtight, and sliding rod slides in support seat, control the opening and closing process of sealing structure, action is sensitive, control is accurate, help to maintain stable sealing performance, and directional frame cooperates with directional rail and slides, guides sealing component to move along set path, prevents deviation wear, improves sealing system stability and service life.

[0020] The utility model sets up spring adjusting mechanism, adjusts the position of pressing plate by threaded sleeve, changes the compression state of sealing spring, thereby adjusts the pre-tightening force of sealing system, adapts to steel pipe test demand of different diameter or pressure grade, and the linkage adjustment of pressing plate and sealing spring makes sealing structure can flexibly respond according to pressure change, enhances adhesion, and improves sealing effect. ACCURACY OF DRAWINGS

[0021] Figure 1 It is the overall structural schematic view of device in the utility model in unused state;

[0022] Figure 2 It is the structural schematic view of push guiding mechanism in the utility model;

[0023] Figure 3 It is the structural schematic view of one-way sealing mechanism installation position in the utility model;

[0024] Figure 4 It is the structural schematic view of one-way sealing mechanism and spring adjusting mechanism in the utility model;

[0025] Figure 5 It is the structural schematic view of one-way sealing mechanism and spring adjusting mechanism inside in the utility model.

[0026] In the figure: 1, operation platform; 2, hydraulic cylinder; 3, push plate; 4, sliding sleeve; 5, mounting sleeve assembly; 6, guide rail; 7, sealing pipe; 8, support seat; 9, sliding rod; 10, single sealing plate; 11, matching plate; 12, guide rod; 13, pressing plate; 14, threaded sleeve; 15, sealing spring; 16, support sleeve; 17, fixing sleeve; 18, detection sleeve; 19, gas injection pipe; 20, gas outlet pipe; 21, connecting pipe; 22, orientation frame; 23, underframe; 24, support plate; 701, orientation rail. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0029] In the present application, unless otherwise stated, the directions used such as "up, down" are generally with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravitational direction; similarly, for the convenience of understanding and description, "left, right" is generally with respect to the left and right shown in the drawings; "inner, outer" refers to the inner and outer with respect to the contour of each component itself, but the above directional words are not used to limit the present application.

[0030] Please refer to Figures 1-5 A kind of no-leakage high-pressure test equipment of injection molding machine hydraulic steel pipe, including operation platform 1, push guiding mechanism, one-way sealing mechanism and spring adjusting mechanism, push guiding mechanism includes hydraulic cylinder 2, push plate 3, sliding sleeve 4, mounting sleeve assembly 5 and guide rail 6, guide rail 6 and hydraulic cylinder 2 are installed at the top end of operation platform 1, push plate 3 is installed at one end of hydraulic cylinder 2, sliding sleeve 4 is slidably installed on guide rail 6, mounting sleeve assembly 5 is installed at the top end of sliding sleeve 4, push plate 3 is connected with one end of mounting sleeve assembly 5, external steel pipe is arranged in mounting sleeve assembly 5, one-way sealing mechanism includes sealing pipe 7, support seat 8, sliding rod 9, single sealing plate 10 and matching plate 11, support seat 8 is installed at one end of sealing pipe 7, sliding rod 9 is slidably installed in support seat 8, and one end of sliding rod 9 extends into sealing pipe 7, matching plate 11 is matched and installed in sealing pipe 7, single sealing plate 10 is installed on the side wall of sliding rod 9, and single sealing plate 10 and matching plate 11 are matched and arranged in one-way sealing mode.

[0031] In the embodiment, the hydraulic cylinder 2 generates thrust after receiving the control signal, drives the push plate 3 to move forward, and the push plate 3 pushes the mounting sleeve assembly 5. Since the mounting sleeve assembly 5 is mounted on the sliding sleeve 4, and the sliding sleeve 4 is slidingly mounted on the guide rail 6, the entire movement process is constrained by the guide rail 6, which ensures the accuracy and stability of the movement. The steel pipe in the mounting sleeve assembly 5 moves forward under the pushing force and is finally sent to the detection position. The mechanism ensures that the steel pipe maintains the correct trajectory and posture during movement and prevents the steel pipe from deforming or being damaged. When the steel pipe enters the detection position, the sliding rod 9 slides into the sealing pipe 7 under the action of external force. The single sealing plate 10 mounted on the side wall of the sliding rod 9 enters the sealing pipe 7, forms a one-way sealing structure with the cooperating plate 11, and tightly fits the cooperating plate 11 to form a stronger sealing effect. When the pressure of the gas is greater than the pre-tightening force of the sealing spring 15, the gas can flow out of the outside through the sealing pipe 7. The sliding design of the directional frame 22 on the directional rail 701 ensures that the single sealing plate 10 maintains the correct angle and position, improves the sealing reliability, and is especially suitable for high-pressure test environment, which can effectively prevent the test medium from leaking.

[0032] The spring adjusting mechanism includes a guide rod 12, a pressing plate 13, a threaded sleeve 14, and a sealing spring 15. The guide rod 12 is mounted at one end of the support seat 8. The pressing plate 13 is slidingly mounted on the guide rod 12 and is slidingly guided in cooperation with the guide rod 12. The sealing spring 15 is mounted between the support seat 8 and the pressing plate 13. The threaded sleeve 14 is threadedly connected to the sliding rod 9 and can push the pressing plate 13 to press the sealing spring 15, thereby changing the pre-tightening force of the sealing spring 15.

[0033] In the embodiment, the operator rotates the threaded sleeve 14. Since the threaded sleeve 14 is threadedly connected to the sliding rod 9, rotation causes the threaded sleeve 14 to move axially along the sliding rod 9. The threaded sleeve 14 pushes the pressing plate 13, which moves in the direction of the sealing spring 15 under the guidance of the guide rod 12 and compresses the sealing spring 15. The compression degree of the sealing spring 15 is different, and the generated elastic force is also different, which directly affects the sealing effect of the one-way sealing mechanism. By adjusting the position of the threaded sleeve 14, the pre-tightening force of the sealing spring 15 can be accurately controlled to adapt to the test requirements of steel pipes of different specifications or different test pressure conditions. The guide rod 12 ensures that the pressing plate 13 does not deviate from the track during movement, thereby improving the adjustment accuracy.

[0034] Please refer to Figures 1-5As a supplementary embodiment of the leakage-free high-pressure test equipment for the hydraulic steel pipe of the injection molding machine, the push guiding mechanism, the one-way sealing mechanism and the spring adjusting mechanism, the top end of the operation table 1 is provided with a supporting sleeve 16 and a fixing sleeve 17, and the top end of the supporting sleeve 16 and the fixing sleeve 17 is provided with a detection sleeve 18, the installation sleeve assembly 5 is arranged opposite to the detection sleeve 18, and the steel pipe installed in the installation sleeve assembly 5 is pushed into the detection sleeve 18, the side wall top end of the detection sleeve 18 is provided with a gas injection pipe 19 and a gas outlet pipe 20, and the external gas injection equipment can be arranged in communication with the gas injection pipe 19, the bottom end of the sealing pipe 7 is provided with a connecting pipe 21, the connecting pipe 21 is arranged in communication with the exhaust pipe, the single sealing plate 10 is provided with a directional frame 22, the directional rail 701 is installed on the inner wall of the sealing pipe 7, the directional frame 22 is arranged in sliding communication with the directional rail 701, and the bottom end of the operation table 1 is provided with a bottom frame 23, and the bottom end of the bottom frame 23 is provided with a supporting plate 24.

[0035] More specifically, the staff puts the hydraulic steel pipe to be tested into the installation sleeve assembly 5, checks the state of each component, ensures that the sealing pipe 7 is connected to the supporting seat 8 normally, the sliding rod 9 is in the appropriate position, starts the hydraulic cylinder 2, and the push plate 3 pushes the installation sleeve assembly 5 to move forward, and the steel pipe is pushed into the detection sleeve 18, the detection sleeve 18 is arranged opposite to the installation sleeve assembly 5, and the steel pipe is correctly aligned, after the steel pipe enters the detection position, the sliding rod 9 drives the single sealing plate 10 to move into the sealing pipe 7, and forms a one-way sealing structure with the cooperation plate 11. The operator adjusts the pre-tightening force of the sealing spring 15 by rotating the threaded sleeve 14 to ensure the sealing effect, the gas injection equipment is connected with the gas injection pipe 19, the gas injection pipe 19 and the gas outlet pipe 20 on the side wall of the detection sleeve 18 start to work, the connecting pipe 21 is in communication with the exhaust pipe to ensure that the test system is unobstructed, high-pressure gas is injected into the system through the gas injection pipe 19, and the gas fills the internal space of the steel pipe. At this time, the one-way sealing mechanism plays a role to prevent gas leakage from the steel pipe port, and the system pressure rises rapidly to the required test pressure value, after the test is completed, the hydraulic cylinder 2 retracts, the push plate 3 moves backward, and the steel pipe can be taken out from the detection sleeve 18.

[0036] In summary, when the push guiding mechanism needs to be operated, the push guiding mechanism is responsible for accurately conveying the steel pipe to be tested and ensuring correct positioning, the hydraulic cylinder 2 receives the control signal to generate a pushing force to drive the push plate 3 to move forward, the push plate 3 pushes the installation sleeve assembly 5, and since the installation sleeve assembly 5 is installed on the sliding sleeve 4, and the sliding sleeve 4 is slidingly installed on the guide rail 6, the entire movement process is carried out under the constraint of the guide rail 6, ensuring the accuracy and stability of the movement, and the steel pipe in the installation sleeve assembly 5 moves forward under the pushing force and is finally sent to the detection position. This mechanism ensures that the steel pipe maintains the correct trajectory and posture during movement, preventing deformation or damage of the steel pipe.

[0037] When the one-way sealing mechanism needs to operate, it ensures that the test medium can only flow from one direction during the test process. After the steel pipe enters the detection position, the sliding rod 9 slides into the sealing pipe 7 under the action of external force. The single sealing plate 10 installed on the side wall of the sliding rod 9 enters the sealing pipe 7, and forms a one-way sealing structure with the cooperating plate 11. The single sealing plate 10 closely fits with the cooperating plate 11, forming a stronger sealing effect. When the pressure of the gas is greater than the pre-tightening force of the sealing spring 15, the gas can flow out of the outside through the sealing pipe 7. The sliding design of the directional frame 22 on the directional rail 701 ensures that the single sealing plate 10 maintains the correct angle and position, improving the sealing reliability. The one-way sealing is especially suitable for high-pressure test environment, which can effectively prevent the leakage of test medium.

[0038] When the spring adjustment mechanism needs to operate, the operator rotates the threaded sleeve 14. Since the threaded sleeve 14 is threadedly connected with the sliding rod 9, rotation will cause the threaded sleeve 14 to move axially along the sliding rod 9. The threaded sleeve 14 pushes the pressing plate 13, which moves in the direction of the sealing spring 15 under the guidance of the guide rod 12, compressing the sealing spring 15. The compression degree of the sealing spring 15 is different, and the resulting elastic force is also different, which directly affects the sealing effect of the one-way sealing mechanism. By adjusting the position of the threaded sleeve 14, the pre-tightening force of the sealing spring 15 can be accurately controlled, thereby adapting to the test requirements of steel pipes of different specifications or different test pressure conditions. The guide rod 12 ensures that the pressing plate 13 does not deviate from the track during movement, improving the adjustment accuracy.

[0039] The worker places the hydraulic steel pipe to be tested into the mounting sleeve assembly 5, checks the status of each component, ensures that the sealing pipe 7 is normally connected with the support seat 8, and the sliding rod 9 is in the appropriate position. The hydraulic cylinder 2 is started, the push plate 3 pushes the mounting sleeve assembly 5 to move forward, and the steel pipe enters the detection sleeve 18. The detection sleeve 18 is oppositely arranged with the mounting sleeve assembly 5, ensuring that the steel pipe is correctly aligned. After the steel pipe enters the detection position, the sliding rod 9 drives the single sealing plate 10 to move into the sealing pipe 7, forming a one-way sealing structure with the cooperating plate 11. The operator adjusts the pre-tightening force of the sealing spring 15 by rotating the threaded sleeve 14, ensuring the sealing effect. The gas injection equipment is connected with the gas injection pipe 19, and the gas injection pipe 19 and the gas outlet pipe 20 on the side wall of the detection sleeve 18 start to work. The connecting pipe 21 is connected with the exhaust pipe, ensuring that the test system is unobstructed. High-pressure gas is injected into the system through the gas injection pipe 19, and the gas fills the internal space of the steel pipe. At this time, the one-way sealing mechanism plays a role to prevent the gas from leaking from the steel pipe port. The system pressure rises rapidly to the required test pressure value. After the test is completed, the hydraulic cylinder 2 retracts, the push plate 3 moves backward, and the steel pipe can be taken out from the detection sleeve 18.

[0040] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection mode, which will not be described here. In the above, whenever there is a fixed connection, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A kind of injection molding machine hydraulic steel pipe's no-leak high pressure test equipment, including operation platform (1), push guiding mechanism, one-way sealing mechanism and spring adjusting mechanism, it is characterized by: The pushing guide mechanism comprises a hydraulic cylinder (2), a pushing plate (3), a sliding sleeve (4), a mounting sleeve assembly (5) and a guide rail (6), the guide rail (6) and the hydraulic cylinder (2) are installed at the top end of the operation table (1), the pushing plate (3) is installed at one end of the hydraulic cylinder (2), the sliding sleeve (4) is slidingly installed on the guide rail (6), the mounting sleeve assembly (5) is installed at the top end of the sliding sleeve (4), the pushing plate (3) is connected with one end of the mounting sleeve assembly (5), and the external steel pipe is arranged in the mounting sleeve assembly (5), the one-way sealing mechanism comprises a sealing pipe (7), a supporting seat (8), a sliding rod (9), a single sealing plate (10) and a matching plate (11), the supporting seat (8) is installed at one end of the sealing pipe (7), the sliding rod (9) is slidingly installed in the supporting seat (8), one end of the sliding rod (9) extends into the sealing pipe (7), the matching plate (11) is matchedly installed in the sealing pipe (7), and the single sealing plate (10) is installed on the side wall of the sliding rod (9) and is matched with the matching plate (11) to be one-way sealed.

2. A kind of high pressure test equipment of the hydraulic steel pipe of injection molding machine according to claim 1, it is characterized by: The spring adjusting mechanism comprises a guide rod (12), a pressing plate (13), a threaded sleeve (14) and a sealing spring (15), the guide rod (12) is installed at one end of the supporting seat (8), the pressing plate (13) is slidingly installed on the guide rod (12) and is slidingly guided in cooperation with the guide rod (12), the sealing spring (15) is installed between the supporting seat (8) and the pressing plate (13), and the threaded sleeve (14) is threadedly connected on the sliding rod (9) and can push the pressing plate (13) to press the sealing spring (15), so that the pre-tightening force of the sealing spring (15) is changed.

3. A leak-free high pressure testing apparatus for hydraulic steel pipes of an injection molding machine according to claim 1, characterized in that: The top end of the operation table (1) is provided with a supporting sleeve (16) and a fixing sleeve (17), and the top end of the supporting sleeve (16) and the fixing sleeve (17) is provided with a detection sleeve (18).

4. The apparatus for testing the hydraulic steel pipe of the injection molding machine according to claim 3, wherein: The mounting sleeve assembly (5) is arranged opposite to the detection sleeve (18), and the steel pipe installed in the mounting sleeve assembly (5) is pushed into the detection sleeve (18).

5. A leak-free high pressure testing apparatus for hydraulic steel pipes of an injection molding machine according to claim 3, characterized in that: The side wall of the detection sleeve (18) is provided with an air injection pipe (19) and an air outlet pipe (20) at the top end, and an external air injection device can be arranged in communication with the air injection pipe (19).

6. A leak-free high pressure testing apparatus for hydraulic steel pipes of an injection molding machine according to claim 1, characterized in that: The bottom end of the sealing pipe (7) is provided with a connecting pipe (21) which is arranged in communication with an exhaust pipe.

7. A leak-free high pressure testing apparatus for hydraulic steel pipes of an injection molding machine according to claim 1, characterized in that: A directional frame (22) is installed on the single sealing plate (10), a directional rail (701) is installed on the inner wall of the sealing pipe (7), and the directional frame (22) is slidingly guided on the directional rail (701).

8. A leak-free high pressure testing apparatus for hydraulic steel pipes of an injection molding machine according to claim 1, characterized in that: The bottom end of the operation table (1) is provided with a bottom frame (23), and the bottom end of the bottom frame (23) is provided with a supporting plate (24).

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