A performance testing device for industrial plastic injection molded parts

Abstract

The present invention provides an industrial plastic injection molded part performance testing device, which relates to the technical field of plastic injection molded part sealing testing, comprising a detection sleeve, a sealing part installed on the detection sleeve, and an expansion supply part installed on the sealing part; the expansion supply part is used to control the seal to expand and seal the plastic injection molded part; a handheld mounting part is installed on the detection sleeve; the handheld mounting part is used to be held by hand; a leak point length inspection part is installed on the handheld mounting part; the handheld mounting part is convenient for checking the leak point length range, is more practical, and is convenient for staff to perform targeted maintenance later, so as to solve the problem that the current plastic injection molded part performance testing device is not convenient for detecting the leak point length and is not convenient for subsequent staff to accurately adjust and polish the flange end face.

Description

Technical Field

[0001] The invention relates to the technical field of sealing test of plastic injection molded parts, in particular to a performance test device for industrial plastic injection molded parts. Background Art

[0002] Plastic injection molding is a plastic product of various shapes made of thermoplastic plastics or thermosetting materials using plastic molding molds. In actual sealing and storage work, injection molding of plastic flanges is often involved. Plastic flanges are widely used in containers such as plastic liquid storage tanks. The injection molding accuracy of plastic flanges is directly related to the sealing performance. At present, the two flanges are usually connected and immersed in a pool of water for testing. Thanks to this method being simple and intuitive, it is widely used. The current plastic injection molding performance testing device is not convenient for detecting the length of the leak point, and it is not convenient for subsequent staff to accurately adjust and polish the flange end face. At the same time, the immersion method requires a larger water pool, which is time-consuming and labor-intensive, has poor flexibility, and is not convenient for handheld testing. At the same time, once the flange leaks, during the immersion and negative pressure suction tests, the thinner plastic tank body is easily damaged by negative pressure suction, resulting in dents and other damage, increasing the detection error rate. The traditional method of relying solely on observing bubbles is also prone to omissions. Summary of the Invention

[0003] The disclosed embodiment relates to an industrial plastic injection molded part performance testing device, wherein the leak point length inspection component thereof is convenient for checking the leak point length range, is more practical, and facilitates subsequent targeted maintenance by staff, so as to solve the problem that the current plastic injection molded part performance testing device is not convenient for detecting the leak point length and is not convenient for subsequent staff to accurately adjust and polish the flange end face.

[0004] In a first aspect of the present disclosure, a device for testing the performance of industrial plastic injection molded parts is provided, comprising a detection sleeve, a sealing part is installed on the sealing part, and an expansion supply part is installed on the sealing part; the expansion supply part is used to control the expansion of the sealing part to seal and fit the plastic injection molded part; a handheld mounting part is installed on the detection sleeve; the handheld mounting part is used to be held by hand; a leakage point length inspection part is installed on the handheld mounting part; the leakage point length inspection part is used to detect the leakage length of the plastic injection molded part; a suction compensating part is installed on the handheld mounting part; the suction compensating part is used to compensate for negative pressure; a leakage detection part is installed on the suction compensating part; the detection sleeve comprises: a detection mounting ring and a threaded connecting tube, the threaded connecting tube is fixedly installed on the detection mounting ring; the detection mounting ring is a transparent plastic structure.

[0005] In at least some embodiments, the suction compensation component includes: a threaded butt tube, a suction pump, a suction pipe and a bypass pipe, the threaded butt tube is threadedly connected to the water inlet pipe; a suction pump is installed on the threaded butt tube; the suction pump is connected to the suction pipe on the upper pipe; the suction pipe is connected to the side pipe of the suction pipe; the suction pump is used to suck the joints of plastic injection molded parts.

[0006] In at least some embodiments, the leak point length inspection part also includes: a closing belt and a connecting column, wherein the end of the closing belt is fixedly mounted on the detection control wheel; a closing belt is wound on the detection control wheel, and a connecting column is fixedly mounted on the other end of the closing belt; two pulling rubber belts are fixedly mounted on both ends of the connecting column; the closing belt is a rubber elastic structure; a groove is provided on the outside of the closing belt; the groove on the outside of the closing belt is slidably mounted on a sliding protrusion ring; the winding direction of the closing belt and the pulling rubber belt on the detection control wheel are opposite.

[0007] In at least some embodiments, the detection sleeve further includes a sliding protrusion ring, a threaded connection tube is fixedly mounted on the inner side of the detection mounting ring, and the threaded connection tube is a transparent plastic structure.

[0008] In at least some embodiments, the handheld mounting component includes: a handheld handle, a water inlet pipe and a rotating mounting shell, the handheld handle is threadedly connected to the threaded connecting pipe; the water inlet pipe is fixedly mounted on the handheld handle; the water inlet pipe is provided with threads; the outer side of the handheld handle is provided with anti-slip grooves; and the rotating mounting shell is fixedly mounted on the handheld handle.

[0009] In at least some embodiments, the expansion supply component includes: a piston cylinder, an expansion propulsion screw and a propulsion piston, the piston cylinder fixed tube is connected to the connecting tube; the expansion propulsion screw is threadedly connected to the piston cylinder; a handle is provided at the end of the expansion propulsion screw; a propulsion piston is fixedly installed on the expansion propulsion screw, and the propulsion piston is sleeved inside the piston cylinder; the propulsion piston is used to control the expansion of the sealing ring.

[0010] In at least some embodiments, the seal includes: a sealing ring and a connecting tube, two sealing rings are fixedly installed inside the detection mounting ring, and a gap is provided between the two sealing rings; a connecting tube is fixedly installed on the two sealing rings; the two sealing rings are used to fit on the outside of the joint of the plastic injection molded part.

[0011] In at least some embodiments, the leakage detection part includes: a connecting tube, a limit block, a micro switch, a spring, a detection piston and an indicator light, and the two ends of the connecting tube are connected between the suction tube and the end tube; a limit block is installed on the connecting tube, and a circle of through holes is provided on the limit block; a micro switch is fixedly installed on the limit block; a spring is sleeved inside the connecting tube, and the spring is fixedly installed on the limit block; a micro switch is fixedly installed on the limit block; a detection piston is slidably sleeved on the connecting tube; an indicator light is sleeved on the connecting tube; the micro switch is electrically connected to the indicator light; the detection piston is used to squeeze the micro switch; the micro switch is used to control the internal pressure of the plastic injection molded part.

[0012] In at least some embodiments, the leak point length inspection component includes: a detection control wheel, an isolation plate and a pulling rubber belt, the detection control wheel is rotatably mounted on a rotating mounting shell; a handwheel is provided on the top of the detection control wheel; two pulling rubber belts are fixedly mounted on the detection control wheel; the detection control wheel is used to reel in the two pulling rubber belts; two isolation plates are fixedly mounted on the detection control wheel; the two pulling rubber belts are located on the outside of the two isolation plates; and the two pulling rubber belts pass through the handheld handle.

[0013] In at least some embodiments, the suction compensation component also includes: a three-way valve, a bypass connecting pipe, an end pipe and a flange connecting plate, the three-way valve is fixedly installed on the bypass pipe; the bypass connecting pipe is fixedly connected to the three-way valve, and the end of the bypass connecting pipe is connected to the end pipe, and the end of the end pipe is fixedly installed with a flange connecting plate; the flange connecting plate is used to be installed on the plastic injection molded part to be tested by bolts; the three-way valve is used to adjust the exhaust path.

[0014] The present invention provides an industrial plastic injection molded parts performance testing device, which has the following beneficial effects:

[0015] The leakage point length inspection piece used in the present invention can be combined with a handheld mounting piece and can be handheld operated. It can quickly detect the flange plastic injection molded part by observing the bubbles. The use of a sealing tape can facilitate the detection of the leakage length when the flange plastic injection molded part leaks, avoiding the difficulty in understanding the leakage degree when a long gap appears locally in the flange plastic injection molded part, and can make it more convenient for the staff to perform subsequent polishing and maintenance work on the flange.

[0016] In addition, the use of the leakage detection unit can quickly perform negative pressure suction work, which can easily prompt the staff to intuitively understand the occurrence of leakage, and prevent the problem of missing bubbles when observing when the leakage is slow. It ensures that slow leakage of the flange can be detected. The use of a three-way valve and a bypass connecting pipe can be used to compensate for the internal pressure of the tank body, and prevent the flange from leaking during suction, causing the tank body to shrink and causing deformation and damage to the tank body. The air pressure in the tank can be compensated by the three-way valve to ensure normal tank pressure.

[0017] In addition, the use of sealing parts can be used to cooperate with the detection mounting ring to be directly installed on the connection of the flange plastic injection molding part. It is simple and convenient to operate and can be operated by hand without immersion in a pool of water. It also improves the test efficiency. The use of expansion supply parts can be used to control the expansion of the sealing ring to tighten it between the two flanges, ensuring the detection of sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0019] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached figure:

[0021] Figure 1 A schematic diagram showing the overall structure of the present application;

[0022] Figure 2 A cross-sectional view showing the internal structure of the present application;

[0023] Figure 3 A schematic diagram showing the bottom structure of the present application;

[0024] Figure 4 A schematic diagram showing the structure of the detection sleeve of the present application is shown;

[0025] Figure 5 A schematic diagram showing the sealing structure of the present application is shown;

[0026] Figure 6 Shows the application Figure 2 A magnified view of the structure of the middle B region;

[0027] Figure 7 A schematic diagram showing the structure of the handheld mounting piece of the present application is shown;

[0028] Figure 8 A schematic diagram showing the structure of the leak point length inspection piece of the present application is shown;

[0029] Figure 9 Shows the application Figure 8 A magnified view of the structure of the middle C region;

[0030] Figure 10 A schematic diagram showing the structure of the suction compensator of the present application is shown;

[0031] Figure 11 Shows the application Figure 10 A magnified view of the structure of the middle D region;

[0032] Figure 12A schematic diagram showing the structure of the leakage detection unit of the present application.

[0033] List of reference numerals:

[0034] 1. Detection socket; 101. Detection mounting ring; 102. Threaded connecting pipe; 103. Sliding raised ring; 2. Seal; 201. Sealing ring; 202. Connecting pipe; 3. Expansion supply member; 301. Piston cylinder; 302. Expansion propulsion screw; 303. Propelling piston; 4. Handheld mounting member; 401. Handheld handle; 4011. Water inlet pipe; 402. Rotating mounting housing; 5. Leakage point length inspection member; 501. Detection control wheel; 5011. Spacer; 502. Pulling rubber belt; 503. Closing belt; 5031. Connecting column; 6. Suction compensation part; 601. Threaded butt joint; 602. Suction pump; 603. Suction pipe; 604. Bypass pipe; 605. Three-way valve; 606. Bypass connecting pipe; 607. Terminal pipe; 608. Flange connection plate; 7. Leakage detection part; 701. Connecting cylinder; 702. Limit block; 703. Micro switch; 704. Spring; 705. Detection piston; 706. Indicator light. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figures 1 to 12 :

[0037] The present invention proposes an industrial plastic injection molded part performance testing device, comprising a detection sleeve 1, a sealing part 2 is installed on the detection sleeve 1, and an expansion supply part 3 is installed on the sealing part 2; the expansion supply part 3 is used to control the seal 2 to expand and seal the plastic injection molded part; a handheld mounting part 4 is installed on the detection sleeve 1; the handheld mounting part 4 is used to be held by hand; a leakage point length inspection part 5 is installed on the handheld mounting part 4; the leakage point length inspection part 5 is used to detect the leakage length of the plastic injection molded part; a suction compensation part 6 is installed on the handheld mounting part 4; the suction compensation part 6 is used to compensate for negative pressure; a leakage detection part 7 is installed on the suction compensation part 6; the detection sleeve 1 comprises: a detection mounting ring 101 and a threaded connecting pipe 102, the threaded connecting pipe 102 is fixedly installed on the detection mounting ring 101; the detection mounting ring 101 is a transparent plastic structure.

[0038] In the embodiment of the present disclosure, the detection sleeve 1 also includes: a sliding protrusion ring 103, a threaded connecting tube 102 is fixedly installed on the inner side of the detection installation ring 101, and the threaded connecting tube 102 is a transparent plastic structure; the sealing member 2 includes: a sealing ring 201 and a connecting tube 202, two sealing rings 201 are fixedly installed inside the detection installation ring 101, and a gap is provided between the two sealing rings 201; a connecting tube 202 is fixedly installed on the two sealing rings 201; the two sealing rings 201 are used to fit the outside of the joint of the plastic injection molded part; the expansion supply member 3 includes: a piston cylinder 301, an expansion propulsion screw 302 and a propulsion piston 303, the piston cylinder 301 is fixedly connected to the connecting tube 202; the piston cylinder 301 is threadedly connected to the expansion propulsion screw 302; the end of the expansion propulsion screw 302 is provided with a handle; the propulsion piston 303 is fixedly installed on the expansion propulsion screw 302 03, and the pushing piston 303 is sleeved inside the piston cylinder 301; the pushing piston 303 is used to control the expansion of the sealing ring 201, and the sealing part 2 is used, which can be used to cooperate with the detection installation ring 101 to be directly sleeved on the connection of the flange plastic injection molded part. The operation is simple and convenient, and it can be operated by hand without being immersed in a pool of water, which can ensure the flexibility of use and improve the test efficiency. The sealing performance test of the flange plastic injection molded part is simple and direct. This structure adopts an expansion supply part 3 that can be used to control the expansion of the sealing ring 201 and fasten it between the two flanges, ensuring the detection sealing and ensuring accurate detection. The two sealing rings 201 and the detection installation ring 101 are used to form a cavity between the connecting seams, and the rotating expansion pushing screw 302 drives the pushing piston 303 to move, and the air pressure inside the piston cylinder 301 is pushed into the sealing ring 201 to make it expand and increase the fitting and sealing effect.

[0039] In the embodiment of the present disclosure, the handheld mounting member 4 includes: a handheld handle 401, a water inlet pipe 4011 and a rotating mounting shell 402, the handheld handle 401 is threadedly connected to the threaded connecting pipe 102; the handheld handle 401 is fixedly mounted with a water inlet pipe 4011; the water inlet pipe 4011 is provided with threads; the outer side of the handheld handle 401 is provided with anti-slip grooves; the handheld handle 401 is fixedly mounted with a rotating mounting shell 402; the leak point length inspection member 5 includes: a detection control wheel 501, an isolation sheet 5011 and a pulling rubber belt 502, the detection control wheel 501 is rotatably mounted on the rotating mounting shell 402; a hand wheel is provided on the top of the detection control wheel 501; two pulling rubber belts 502 are fixedly mounted on the detection control wheel 501; the detection control wheel 501 Used to reel in two pulling rubber belts 502; two isolation sheets 5011 are fixedly mounted on the detection and control wheel 501; the two pulling rubber belts 502 are located outside the two isolation sheets 5011; the two pulling rubber belts 502 pass through the handheld handle 401; the leakage point length inspection piece 5 also includes: a closing belt 503 and a connecting column 5031, the end of the closing belt 503 is fixedly mounted on the detection and control wheel 501; the closing belt 503 is reeled up on the detection and control wheel 501, and the other end of the closing belt 503 is fixedly mounted with a connecting column 5031; two pulling rubber belts 502 are fixedly mounted at both ends of the connecting column 5031; the closing belt 503 is a rubber elastic structure; a groove is provided on the outside of the closing belt 503; the groove on the outside of the closing belt 503 is slidably mounted The sealing belt 503 is on the sliding raised ring 103; the winding direction of the closing belt 503 and the pulling rubber belt 502 on the detection control wheel 501 is opposite, and the leakage point length inspection piece 5 can be matched with the handheld mounting piece 4, and the handheld operation can be carried out quickly by observing the bubbles in the flange plastic injection molded part. It is simple and intuitive. At the same time, the structure uses the sealing belt 503 to facilitate the detection of the leakage length when the flange plastic injection molded part leaks, and avoids the problem that only the bubble appearance cannot reflect the gap length when a long gap appears locally in the flange plastic injection molded part. It is more practical and can make it easier for the staff to perform subsequent grinding and maintenance on the flange. At the same time, the sealing belt 503 used in this structure can be matched with the pulling rubber belt 502, and the detection control wheel 5 is used. 01 can quickly pull and control the movement of the closing belt 503 to ensure flexibility of use, compact structure, and easy operation. The surface of the flange plastic injection molded part can be tested for leakage in sequence. Because the closing belt 503 and the pulling rubber belt 502 are wound in opposite directions on the detection control wheel 501, when the pulling rubber belt 502 is wound, the closing belt 503 is in the unwinding state. The pulling rubber belt 502 pulls the closing belt 503, and the closing belt 503 slides on the sliding protrusion ring 103, thus achieving adhesion to the joint between the flange plastic injection molded part and the flange connecting plate 608. At this time, if the gap at the joint is long, the closing belt 503 needs to completely seal the entire leak point before the bubbles disappear. In this way, the length of the leaking gap can be known.

[0040] Example 2, on the basis of Example 1, the suction compensating member 6 includes: a threaded butt joint 601, a suction pump 602, a suction pipe 603 and a bypass pipe 604, the threaded butt joint 601 is threadedly connected to the water inlet pipe 4011; a suction pump 602 is installed on the threaded butt joint 601; the upper pipe of the suction pump 602 is connected to the suction pipe 603; the side pipe of the suction pipe 603 is connected to the bypass pipe 604; the suction pump 602 is used to suck the joints of the plastic injection molded parts; the suction compensating member 6 also includes: a three-way valve 605, a bypass connecting pipe 606, an end pipe 607 and a flange connection plate 608, the three-way valve 605 is fixedly installed on the bypass pipe 604; the upper pipe of the three-way valve 605 is fixedly connected to the bypass connecting pipe 606, and the end of the bypass connecting pipe 606 The end pipe is connected to the end pipe 607, and the end of the end pipe 607 is fixedly installed with a flange connection plate 608; the flange connection plate 608 is used to be installed on the plastic injection molded part to be tested by bolts; the three-way valve 605 is used to adjust the exhaust path; the leakage detection part 7 includes: a connecting cylinder 701, a limit block 702, a micro switch 703, a spring 704, a detection piston 705 and an indicator light 706, and the two ends of the connecting cylinder 701 are connected between the suction pipe 603 and the end pipe 607; a limit block 702 is installed on the connecting cylinder 701, and a circle of through holes is provided on the limit block 702; a micro switch 703 is fixedly installed on the limit block 702; a spring 704 is sleeved inside the connecting cylinder 701, and the spring 704 is fixedly installed on the limit block 702 The upper limit block 702 is fixedly mounted with a micro switch 703; a detection piston 705 is slidably sleeved on the connecting tube 701; an indicator light 706 is sleeved on the connecting tube 701; the micro switch 703 is electrically connected to the indicator light 706; the detection piston 705 is used to squeeze the micro switch 703; the micro switch 703 is used to control the internal pressure of the plastic injection molded part. The use of the leakage detection part 7 in conjunction with the suction compensation part 6 can quickly perform negative pressure suction work, which can facilitate the staff to perform leak detection work. At the same time, the use of the leakage detection part 7 in this structure can facilitate the structure to perform leak detection work on the tank flange, which can facilitate the staff to intuitively understand the occurrence of leakage, and prevent the problem of missing bubbles when observing when the leakage is slow. In order to ensure that slow leakage can be detected, a three-way valve 605 and a bypass connecting pipe 606 are used to compensate for the internal pressure of the tank body, so as to prevent the flange from leaking during suction and causing the tank body to shrink and deform and damage. The three-way valve 605 can be used to compensate for the air pressure in the tank body to ensure that the tank body pressure is normal. The structure is simple and the safety is stronger. In particular, the flange of the tank body is subjected to negative pressure suction for a long time. If the plastic injection molding of the flange leaks, negative pressure is generated in the tank body. Under the action of negative pressure, the detection piston 705 moves inward, compresses the spring 704, and squeezes the micro switch 703, which can control the indicator light 706 to light up and control the three-way valve 605 to compensate for the pressure inside the flange tank body. The structure is simple and the safety is stronger.

[0041] The working principle of this embodiment is as follows: First, the detection installation ring 101 is sleeved on the outer side of the flange plastic injection molded part and the flange connecting plate 608. When testing two interconnected flange plastic injection molded parts, the detection installation ring 101 can also be sleeved between the two interconnected flange plastic injection molded parts, and the flange connecting plate 608 is connected to the flange plastic injection molded part at the end by bolts. The two sealing rings 201 are respectively attached to the outer side of the flange connecting plate 608 and the outer side of the flange plastic injection molded part, ensuring that the two sealing rings 201 are located between the joints, and a cavity is formed between the connecting seams using the two sealing rings 201 and the detection installation ring 101. The rotating expansion screw rod 302 drives the propulsion piston 303 to move, pushing the internal air pressure of the piston cylinder 301 into the sealing ring 201, causing it to expand and increase the sealing effect; the water inlet pipe 4011 introduces pure water to soak the flange joint, and at this time, with the suction of the suction pump 602, the staff can observe whether there are bubbles, that is, the sealing of the flange joint. If there are bubbles, the detection control wheel 501 can be rotated to achieve the winding of the pulling rubber belt 502. Because the winding direction of the closing belt 503 and the pulling rubber belt 502 on the detection control wheel 501 is opposite, when the pulling rubber belt 502 is wound, the closing belt 503 is in In the unwinding state, the closing tape 503 is pulled by the pulling rubber belt 502, and the closing tape 503 slides on the sliding protrusion ring 103, thus achieving adhesion to the joint between the flange plastic injection molding and the flange connecting plate 608. At this time, if the gap at the joint is long, the closing tape 503 needs to completely seal the entire leak point so that the bubbles will disappear. Otherwise, even if the position where the bubbles are generated is blocked, the bubbles will appear from the position where the closing tape 503 is not closed. In this way, the length of the leaking gap can be known. After water is filled in the water inlet pipe 4011, the threaded butt joint 601 is tightened on the water inlet pipe 4011. At this time, the suction pump 602 is sucking. If the flange plastic injection molding is When the plastic part leaks, negative pressure is generated in the tank. Under the action of negative pressure, the detection piston 705 moves inward, compresses the spring 704, and squeezes the micro switch 703, which can control the indicator light 706 to light up. At this time, the staff will know that there is a leak at the flange connection and can control the three-way valve 605. At this time, the suction pump 602 can be converted from the original exhaust directly discharged from the bypass connecting pipe 606 to the exhaust of the suction pump 602. It is discharged from the bypass connecting pipe 606 to the terminal pipe 607 and then discharged from the inside of the flange connection plate 608. At this time, the pressure inside the flange tank body can be compensated to prevent the plastic tank body connected to the flange plastic injection molded part from sinking.

[0042] In this article, there are several points to note:

[0043] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0044] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0045] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. An industrial plastic injection molded part performance testing device, comprising a detection sleeve (1), a sealing member (2) mounted on the detection sleeve (1), characterized in that: An expansion supply component (3) is installed on the sealing component (2); the expansion supply component (3) is used to control the sealing component (2) to expand and seal the plastic injection molded component; A handheld mounting piece (4) is mounted on the detection sleeve (1); the handheld mounting piece (4) is used for handholding; A leak point length inspection component (5) is installed on the handheld mounting component (4); the leak point length inspection component (5) is used to detect the leakage length of the plastic injection molded part; A suction compensating member (6) is mounted on the handheld mounting member (4); the suction compensating member (6) is used to compensate for negative pressure; a leakage detecting portion (7) is mounted on the suction compensating member (6); The detection sleeve (1) comprises: a detection installation ring (101), a threaded connection pipe (102) and a sliding protrusion ring (103); the threaded connection pipe (102) is fixedly mounted on the detection installation ring (101); the detection installation ring (101) is a transparent plastic structure; The leak point length inspection member (5) comprises: a detection control wheel (501), a pulling rubber belt (502) and a closing belt (503); the closing belt (503) is wound on the detection control wheel (501); two pulling rubber belts (502) are fixedly mounted on the detection control wheel (501); the closing belt (503) and the pulling rubber belt (502) are wound in opposite directions on the detection control wheel (501); a groove is provided on the outer side of the closing belt (503); and the groove on the outer side of the closing belt (503) is slidably mounted on the sliding protrusion ring (103).

2. An industrial plastic injection molded parts performance testing device according to claim 1, characterized in that: A threaded connection pipe (102) is fixedly installed on the inner side of the detection installation ring (101), and the threaded connection pipe (102) is a transparent plastic structure.

3. The industrial plastic injection molded parts performance testing device according to claim 1, characterized in that: The sealing member (2) comprises: a sealing ring (201) and a connecting pipe (202); two sealing rings (201) are fixedly mounted inside the detection mounting ring (101), and a space is provided between the two sealing rings (201); a connecting pipe (202) is fixedly mounted on the two sealing rings (201); and the two sealing rings (201) are used to fit on the outside of a joint of a plastic injection molded part.

4. The industrial plastic injection molded parts performance testing device according to claim 3, characterized in that: The expansion supply member (3) comprises: a piston cylinder (301), an expansion propulsion screw rod (302) and a propulsion piston (303); the piston cylinder (301) is fixedly connected to the connecting pipe (202); the expansion propulsion screw rod (302) is threadedly connected to the piston cylinder (301); a handle is provided at the end of the expansion propulsion screw rod (302); a propulsion piston (303) is fixedly mounted on the expansion propulsion screw rod (302), and the propulsion piston (303) is sleeved inside the piston cylinder (301); the propulsion piston (303) is used to control the expansion of the sealing ring (201).

5. The industrial plastic injection molded parts performance testing device according to claim 2, characterized in that: The handheld mounting member (4) comprises: a handheld handle (401), a water inlet pipe (4011) and a rotating mounting shell (402); the handheld handle (401) is threadedly connected to the threaded connecting pipe (102); the water inlet pipe (4011) is fixedly mounted on the handheld handle (401); the water inlet pipe (4011) is provided with threads; the outer side of the handheld handle (401) is provided with anti-slip grooves; and the rotating mounting shell (402) is fixedly mounted on the handheld handle (401).

6. The industrial plastic injection molded parts performance testing device according to claim 5, characterized in that: The leak point length inspection member (5) further comprises: an isolation sheet (5011); the detection control wheel (501) is rotatably mounted on a rotating mounting shell (402); a hand wheel is provided on the top of the detection control wheel (501); the detection control wheel (501) is used to reel in two pulling rubber belts (502); two isolation sheets (5011) are fixedly mounted on the detection control wheel (501); the two pulling rubber belts (502) are located outside the two isolation sheets (5011); and the two pulling rubber belts (502) pass through a handheld handle (401).

7. The industrial plastic injection molded parts performance testing device according to claim 6, characterized in that: The leak point length inspection member (5) further comprises: a connecting column (5031); the end of the closing belt (503) is fixedly mounted on the detection control wheel (501); and the other end of the closing belt (503) is fixedly mounted with the connecting column (5031); two pulling rubber belts (502) are fixedly mounted at both ends of the connecting column (5031); and the closing belt (503) is a rubber elastic structure.

8. The industrial plastic injection molded parts performance testing device according to claim 5, characterized in that: The suction compensating member (6) comprises: a threaded butt-jointed pipe (601), a suction pump (602), a suction pipe (603) and a bypass pipe (604); the threaded butt-jointed pipe (601) is threadedly connected to the water inlet pipe (4011); the suction pump (602) is mounted on the threaded butt-jointed pipe (601); the suction pipe (603) is connected to the upper pipe of the suction pump (602); the side of the suction pipe (603) is connected to the bypass pipe (604); the suction pump (602) is used for sucking the joints of plastic injection molded parts.

9. The industrial plastic injection molded parts performance testing device according to claim 8, characterized in that: The suction compensating member (6) further comprises: a three-way valve (605), a bypass connecting pipe (606), a terminal pipe (607) and a flange connecting plate (608); the three-way valve (605) is fixedly mounted on the bypass pipe (604); the bypass connecting pipe (606) is fixedly connected to the three-way valve (605), and the end of the bypass connecting pipe (606) is connected to the terminal pipe (607), and the end of the terminal pipe (607) is fixedly mounted with a flange connecting plate (608); the flange connecting plate (608) is used to be mounted on the plastic injection molded part to be inspected by means of bolts; the three-way valve (605) is used to adjust the exhaust path.

10. The industrial plastic injection molded parts performance testing device according to claim 9, characterized in that: The leakage detection unit (7) comprises: a connecting tube (701), a limiting block (702), a micro switch (703), a spring (704), a detection piston (705) and an indicator light (706); the two ends of the connecting tube (701) are connected between the suction pipe (603) and the terminal tube (607); a limiting block (702) is installed on the connecting tube (701), and a circle of through holes is provided on the limiting block (702); a micro switch (703) is fixedly installed on the limiting block (702); the interior of the connecting tube (701) is provided with a micro switch (703); A spring (704) is sleeved, and the spring (704) is fixedly mounted on the limit block (702); a micro switch (703) is fixedly mounted on the limit block (702); a detection piston (705) is slidably sleeved on the connecting cylinder (701); an indicator light (706) is sleeved on the connecting cylinder (701); the micro switch (703) is electrically connected to the indicator light (706); the detection piston (705) is used to squeeze the micro switch (703); and the micro switch (703) is used to control the internal pressure of the plastic injection molded part.

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