A printer injection molding part air tightness detection device

Abstract

The application belongs to the technical field of printer injection molding part detection device, and particularly relates to a printer injection molding part air tightness detection device, which comprises an air tightness detection support assembly and an upper installation assembly installed on the air tightness detection support assembly. The first hinge rod and the second hinge rod drive the clamping installation plate to move to the edge of the printer injection molding part. In the present scheme, the clamping installation plate directly adheres to the outside hole of the printer injection molding part through the side edge positioning assembly, replacing the installation mode that the clamping installation plate directly slides along the edge of the printer injection molding part in the prior art, so as to reduce the abrasion between the rubber material and the printer injection molding part. Meanwhile, when the cover of the upper installation assembly is closed, the rubber at the bottom of the upper installation assembly adheres to the side edge positioning assembly, so as to form a sealed environment, reduce the rubber abrasion, avoid the inaccurate experimental results caused by the rubber abrasion, and prolong the experimental life of the rubber.

Description

Technical Field

[0001] The invention belongs to the technical field of detection devices for injection molded parts of printers, and specifically relates to an air tightness detection device for injection molded parts of printers. Background Art

[0002] Injection molded parts of printers (such as ink cartridges, print head assemblies, etc.) have extremely high requirements on air tightness. Minor leakage will cause ink leakage and dust intrusion, which directly affects printing quality and equipment service life. Traditional detection methods (such as manual visual inspection and water immersion method) have low efficiency and poor reliability, and are difficult to meet the needs of modern high-precision, automated production; the currently commonly used method is pressure / flow detection method, which monitors pressure changes to judge leakage by filling gas and using integrated sensors (such as differential pressure sensors, flow meters) and automatic control systems (such as air tightness detectors) to improve detection accuracy and efficiency.

[0003] After retrieval, the patent with the publication number CN214843817U discloses an air tightness detection device for aluminum alloy die castings for automobiles. By virtue of the provided rubber pad, limit ring, first rubber ring, second rubber ring and third rubber ring, the pressing block can realize limiting and fixing of the die casting, ensuring stability during the detection process. Meanwhile, under the interaction of the rubber pad, the first rubber ring, the second rubber ring and the third rubber ring, the sealing of the die casting can be realized, ensuring that no leakage occurs during the testing process of the die casting and improving the detection accuracy. The display screen of the air tightness leak detector displays the accurate leakage amount of the current test and automatically determines whether the air tightness of the product to be tested is qualified, so that detection errors will not occur.

[0004] When the above detection device is used, the air tightness detection method is adopted to detect the injection molded parts of printers, and the ventilation openings of the die casting are sealed by rubber rings to achieve a relatively closed environment. However, the above device still adopts a bottom-up method to slide sealing members such as the upper rubber ring along the surface of the injection molded part of the printer to the specified position. Due to the shape of the surface of the printer injection molded part or the relatively rough surface without fine grinding, the rubber ring will be damaged by relatively serious friction, resulting in low detection accuracy. Summary of the Invention

[0005] The object of the present invention is to provide an air tightness detection device for injection molded parts of printers, so as to solve the problems raised in the above background art.

[0006] The technical solution of the present invention is as follows: an airtightness testing device for printer injection molded parts, comprising an airtightness testing support assembly, an upper mounting assembly mounted on the airtightness testing support assembly, a bidirectional deflection assembly for adjusting the side wall sealing distance mounted on the airtightness testing support assembly, a sealing mounting assembly mounted on the bidirectional deflection assembly, an upper mounting assembly for sealing the top of the printer injection molded part mounted on one side of the airtightness testing support assembly, and a side positioning assembly for sealing the side of the printer injection molded part mounted on the sealing mounting assembly.

[0007] The airtightness testing support assembly includes a guide protective shell, a lower component mounting frame is fixedly installed on one side of the guide protective shell, a forward and reverse motor is fixedly installed on the other side of the guide protective shell, and a positive thread rod is fixedly installed at the output end of the forward and reverse motor.

[0008] The bidirectional deflection assembly includes a built-in threaded tube, which is threadedly connected to a positive threaded rod. Two hollow tube blocks are fixedly connected to both sides of the built-in threaded tube. Two corresponding locking blocks are slidably connected inside the two hollow tube blocks. Two rotating rods are fixedly connected inside the two corresponding locking blocks. A first hinge rod is hinged to both sides of one rotating rod, and a second hinge rod is hinged to both sides of the other rotating rod. A positioning hollow rod block is rotatably connected inside the first hinge rod and the second hinge rod. Four locking mounting plates are hinged to the first hinge rod and the second hinge rod.

[0009] The airtightness testing support assembly also includes a locking ring, which is fixedly installed on the guide protective shell. A locking telescopic rod is fixedly connected to one side of the locking ring, and a slide positioning block is slidably installed on one side of the locking telescopic rod. The slide positioning block is fixedly installed on the outside of the locking mounting plate. Multiple positioning blocks are fixedly connected to one side of the guide protective shell, and a central positioning block is fixedly connected to one side of the multiple positioning blocks. The positioning hollow rod block is rotatably connected to the central positioning block.

[0010] Optionally, the corresponding card block is fixedly connected to a positioning slider on the inner side of the hollow tube block, and an auxiliary spring is fixedly connected between the positioning slider and the hollow tube block.

[0011] Optionally, the locking mounting plate is located on both sides of the vertical center line of the positioning hollow rod block and is slidably connected to the first hollow plate by two sets of sliders.

[0012] Optionally, the other two sides of the locking mounting plate are slidably connected to a second hollow plate via two sliders.

[0013] Optionally, the side positioning assembly includes two sets of tilting rods, wherein the two sets of tilting rods are fixedly installed on the second hollow plate, and a bidirectional connecting rod is fixedly connected to the outer side of the tilting rod.

[0014] Optionally, a bent rod is hinged to the side of the inclined rod away from the second hollow plate, and the bent rod is hinged to a bidirectional connecting rod.

[0015] Optionally, a rubber sealing block is fixedly connected to the bending rod and the bidirectional connecting rod by a friction sticker, and an arc-shaped spring is fixedly connected between the bending rod and the tilting rod.

[0016] Optionally, an airbag telescopic assembly is installed between the sealing and positioning assembly and the side positioning assembly. The airbag telescopic assembly includes a telescopic airbag block, which is fixedly installed on another set of bidirectional connecting rods and installed inside the first hollow plate.

[0017] Optionally, a corresponding slider is fixedly connected to one side of the bidirectional connecting rod, and a cavity block is slidably connected to one side of the corresponding slider. The cavity block is fixedly installed on the first hollow plate, and a spring is fixedly installed between the corresponding slider and the cavity block. An airbag connecting tube is installed inside the first hollow plate, and the airbag block and the airbag connecting tube are in communication. The slider, the first hollow plate, and the airbag connecting tube are set in a sealed state.

[0018] Optionally, a reverse thread rod is fixedly connected to the bottom end of the positive thread rod, and the positive thread rod and the reverse thread rod are sleeved inside the middle positioning block;

[0019] The upper placement assembly includes an upper placement frame, with a telescopic positioning rod fixedly connected to the top of the upper placement frame. The side of the telescopic positioning rod away from the upper placement frame is fixedly installed at the bottom of the central positioning block, and the reverse thread rod is threadedly installed on the top of the upper placement frame.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] 1. The first and second hinges of this invention drive the locking mounting plate to move towards the edge of the printer injection molded part. Compared with the prior art of sliding along the edge of the printer injection molded part, this invention drives the side positioning component to directly fit into the outer hole of the printer injection molded part, thereby reducing the wear between the rubber material and the printer injection molded part. At the same time, as the upper mounting component is covered, the rubber at the bottom of the upper mounting component fits into the side positioning component, thereby forming a sealed environment, reducing rubber wear, avoiding inaccurate experimental results caused by rubber wear, and extending the experimental life of the rubber.

[0022] 2. In this invention, the rubber sealing block on the bending rod is deflected towards the position of the rubber sealing block on the bidirectional connecting rod by the side pressure of the printer injection part, so that the rubber sealing block on the bending rod and the bidirectional connecting rod fits against the notch on the side of the printer injection part. At the same time, the arc spring provides a thrust to the rubber sealing block on the bending rod, so that the rubber sealing block located on the side edge of the printer injection part can further contact the side of the printer injection part, thereby preventing airflow from leaking out from the side seal of the printer injection part and improving the accuracy of the test results.

[0023] 3. In this invention, the airbag connecting tube is pressurized and conducts airflow to the telescopic airbag block. The telescopic airbag block changes from a compressed state to an outward convex state. Under the positioning and clamping of the corresponding slider, the telescopic airbag block moves along the inner cavity of the hollow block with the corresponding slider, so that the side positioning component can fit against both sides of the printer injection part. Together with the second hollow plate, it can better seal the opening on the side of the printer injection part, thus improving the sealing effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A;

[0026] Figure 3 This is a schematic diagram of the structure of the multi-position positioning block of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the snap-fit ​​mounting plate of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the first hinge of the present invention;

[0029] Figure 6 This is a schematic diagram of the hollow tube block of the present invention;

[0030] Figure 7 This is a schematic diagram of the auxiliary spring of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the lower component mounting frame of the present invention;

[0032] Figure 9 This is a schematic diagram of the bidirectional connecting rod of the present invention;

[0033] Figure 10 This is a schematic diagram of the structure of the telescopic airbag block of the present invention;

[0034] Figure 11 For the present invention Figure 10 Enlarged structural diagram at point B;

[0035] Figure 12 This is a force analysis diagram for an embodiment of the present invention.

[0036] In the diagram: 1. Air tightness testing support assembly; 101. Guide protective shell; 102. Lower component mounting frame; 103. Engaging ring; 104. Central positioning block; 105. Forward and reverse motor; 106. Locking telescopic rod; 107. Threaded rod; 108. Reverse threaded rod; 109. Multi-position positioning block; 2. Sealing mounting assembly; 201. Engaging mounting plate; 202. First hollow plate; 203. Slider; 204. Second hollow plate; 205. Slide positioning block; 3. Bidirectional deflection assembly; 301. Hollow tube block; 302. Internal threaded tube; 303. First 304. Hinge rod; 305. Corresponding locking block; 306. Rotating rod; 307. Positioning slider; 308. Positioning hollow rod block; 309. Second hinge rod; 3000. Auxiliary spring; 4. Upper mounting assembly; 401. Upper mounting frame; 402. Telescopic positioning rod; 5. Side positioning assembly; 501. Inclined rod; 502. Two-way connecting rod; 503. Arc spring; 504. Bending rod; 505. Rubber sealing block; 6. Airbag telescopic assembly; 601. Airbag connecting tube; 602. Telescopic airbag block; 603. Hollow block; 604. Corresponding slider; 605. Spring. Detailed Implementation

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] like Figures 1-7 As shown, a printer injection molded part air tightness testing device includes an air tightness testing support assembly 1, an upper mounting assembly 4 mounted on the air tightness testing support assembly 1, a bidirectional deflection assembly 3 for adjusting the side wall sealing distance mounted on the air tightness testing support assembly 1, a sealing mounting assembly 2 mounted on the bidirectional deflection assembly 3, an upper mounting assembly 4 for sealing the top of the printer injection molded part mounted on one side of the air tightness testing support assembly 1, and a side positioning assembly 5 for sealing the side of the printer injection molded part mounted on the sealing mounting assembly 2.

[0040] The air tightness testing support assembly 1 includes a guide protective shell 101. A lower component mounting frame 102 is fixedly installed on one side of the guide protective shell 101. When using this invention to perform air tightness testing on the printer injection molded part, the printer injection molded part is first placed in the corresponding lower component mounting frame 102. A forward and reverse motor 105 is fixedly installed on the other side of the guide protective shell 101. A positive thread rod 107 is fixedly installed at the output end of the forward and reverse motor 105.

[0041] The bidirectional deflection assembly 3 includes a built-in threaded tube 302, which is threadedly connected to a positive threaded rod 107. Two hollow tube blocks 301 are fixedly connected to both sides of the built-in threaded tube 302. Two corresponding locking blocks 304 are slidably connected inside the two hollow tube blocks 301. Two rotating rods 305 are fixedly connected inside the two corresponding locking blocks 304. A first hinge rod 303 is hinged to both sides of one rotating rod 305, and a second hinge rod 308 is hinged to both sides of the other rotating rod 305. The first hinge rod 303 and the second hinge rod 308 rotate internally. A positioning hollow rod block 307 is connected. Four locking plates 201 are hinged to the first hinge rod 303 and the second hinge rod 308. The forward and reverse motor 105 drives the positive thread rod 107 to rotate. Under the threaded guidance of the positive thread rod 107, the internal threaded tube 302 moves upward along the positive thread rod 107. The internal threaded tube 302 drives the corresponding locking block 304 to pull upward through the two hollow tube blocks 301. The second hinge rod 308 and the first hinge rod 303 are connected through the tension transmitted by the rotating rod 305, causing the first hinge rod 303 and the second hinge rod 308 to close inward. Figure 12 As shown, the first hinge 303 and the second hinge 308 are subjected to an inward tilting force. Firstly, the tilting force is decomposed into a horizontal thrust, causing the distance between the first hinge 303 and the second hinge 308 to decrease. Since the first hinge 303 and the second hinge 308 are symmetrical about their connection point, the change in their vertical distance is the same. Therefore, the distance between the first hinge 303 and the second hinge 308 decreases accordingly. Simultaneously, the tilting force is further decomposed into a vertically upward thrust. Therefore, the corresponding locking block 304 moves upward with the hollow tube block 301, while the horizontal distance between the second hinge 308 and the first hinge 303 decreases. Under the action of thrust, it slides inward along the interior of the hollow tube block 301. At this time, the first hinge 303 and the second hinge 308 drive the locking mounting plate 201 to move towards the edge of the printer injection part, thereby causing the side positioning component 5 to directly fit into the outer hole of the printer injection part. Compared with the existing technology where the locking mounting plate slides along the edge of the printer injection part, it can reduce the wear between the rubber material and the printer injection part. At the same time, as the cover of the upper mounting component 4 is lowered, the rubber at the bottom of the upper mounting component 4 fits into the side positioning component 5, thereby forming a sealed environment, reducing rubber wear, avoiding inaccurate experimental results caused by rubber wear, and extending the experimental life of the rubber.

[0042] In this embodiment, the airtightness testing support assembly 1 further includes a locking ring 103, which is fixedly installed on the guide protective shell 101. A locking telescopic rod 106 is fixedly connected to one side of the locking ring 103, and a slide positioning block 205 is slidably installed on one side of the locking telescopic rod 106. The slide positioning block 205 can restrict the moving distance and moving direction of the locking telescopic rod 106, so that the connection between the locking telescopic rod 106 and the slide positioning block 205 can only be in the slide. The slide block 205 slides within the positioning block 205, which is fixedly installed on the outside of the locking plate 201. A multi-positioning block 109 is fixedly connected to one side of the guide protective shell 101, and a central positioning block 104 is fixedly connected to one side of the multi-positioning block 109. A positioning hollow rod block 307 is rotatably connected to the central positioning block 104. Under the limiting action of the locking telescopic rod 106, the built-in threaded tube 302 is prevented from rotating synchronously with the rotation of the positive threaded rod 107. The threaded tube 302 can move up and down with the positive threaded rod 107, while the first hinge rod 303 and the second hinge rod 308 perform opening and closing movements. With the movement of the locking mounting plate 201, the locking telescopic rod 106 slides on the locking mounting plate 201 via the slide positioning block 205 and performs corresponding telescopic movements, ensuring that the internal threaded tube 302 always slides on the positive threaded rod 107. A corresponding locking block 304 is located inside the hollow tube block 301 and is fixedly connected to a positioning slider 306 for positioning. An auxiliary spring 309 is fixedly connected between the slider 306 and the hollow tube block 301. When the corresponding locking block 304 deflects with the second hinge rod 308 and the positioning hollow rod block 307, the corresponding locking block 304 drives the positioning slider 306 to slide along the inner cavity of the hollow tube block 301, thereby providing support for the opening and closing motion between the positioning hollow rod block 307 and the second hinge rod 308. The auxiliary spring 309 limits the sliding distance of the positioning slider 306.

[0043] The locking mounting plate 201 is located on both sides of the vertical center line of the positioning hollow rod block 307, and is slidably connected to the first hollow plate 202 by two sets of sliders 203. The other two sides of the locking mounting plate 201 are slidably connected to the second hollow plate 204 by two sliders 203. As the first hinge rod 303 and the second hinge rod 308 deflect inward or outward along the positioning hollow rod block 307, the first hinge rod 303 and the second hinge rod 308 gradually approach the injection molded part. The distance between the first hollow plate 202 and the sliders 203 changes with the distance between the first hinge rod 303 and the second hinge rod 308, causing the sliders 203 to slide correspondingly along the inner cavities of the first hollow plate 202 and the second hollow plate 204. Figure 12As shown, specifically, when the first hinge 303 and the second hinge 308 move inward, due to the change in the spacing of the locking plate 201 on the side where the spacing between the first hinge 303 and the second hinge 308 changes, the first hollow plate 202 and the slider 203 must undergo telescopic movement. At the same time, in order to ensure that the locking plate 201 remains perpendicular to the ground during the movement, the locking ring 103 must hold it. Therefore, as the locking plate 201 moves downward and inward, the locking telescopic rod 106 and the locking ring 103 need to undergo relative telescopic movement, and the locking ring 103 remains in its original position, which will cause the locking telescopic rod 106 to move upward relative to the slide positioning block 205.

[0044] Example 2

[0045] like Figure 9 As shown, based on Embodiment 1, the side positioning component 5 includes two sets of tilting rods 501, wherein the two sets of tilting rods 501 are fixedly installed on the second hollow plate 204, and a bidirectional connecting rod 502 is fixedly connected to the outer side of the tilting rod 501. A bent rod 504 is hinged to the side of the tilting rod 501 away from the second hollow plate 204, and the bent rod 504 is hinged to the bidirectional connecting rod 502.

[0046] In this embodiment, a rubber sealing block 505 is fixedly connected to the bending rod 504 and the bidirectional connecting rod 502 via friction pads. Depending on the shape of the printer injection molded part, different sealing components can be installed on the bending rod 504 to adequately seal the notches of different shaped printer injection molded parts. An arc-shaped spring 503 is fixedly connected between the bending rod 504 and the tilting rod 501. As the rubber sealing block 505 contacts the side notch of the printer injection molded part, it is fully compressed against the side of the printer injection molded part. At this time, the rubber sealing block on the bending rod 504... 505 is deflected by the side pressure of the printer injection part towards the position of the rubber sealing block 505 on the bidirectional connecting rod 502, so that the bending rod 504 and the rubber sealing block 505 on the bidirectional connecting rod 502 fit against the notch on the side of the printer injection part. At the same time, the arc spring 503 provides a thrust to the rubber sealing block 505 on the bending rod 504, so that the rubber sealing block 505 located at the side edge of the printer injection part can further contact the side of the printer injection part, thereby preventing airflow from leaking out from the side seal of the printer injection part, and thus improving the accuracy of the test results.

[0047] Example 3

[0048] like Figures 8-11As shown, based on the above embodiment one or two, an airbag telescopic assembly 6 is installed between the sealing and positioning assembly 2 and the side positioning assembly 5. The airbag telescopic assembly 6 includes a telescopic airbag block 602, which is fixedly installed on another set of bidirectional connecting rods 502. The telescopic airbag block 602 is installed inside the first hollow plate 202. A corresponding slider 604 is fixedly connected to one side of the bidirectional connecting rods 502, and a cavity block 603 is slidably connected to one side of the corresponding slider 604. The cavity block 603 is fixedly installed on the first hollow plate 202. A spring 605 is fixedly installed between the corresponding slider 604 and the cavity block 603. An airbag connecting tube 601 is installed inside the first hollow plate 202, and the telescopic airbag block 602 and the airbag connecting tube 601 are in a communicating state. The slider 203 and the first hollow plate 202 are connected. The airbag connecting tube 601 is sealed together. As the first hinge rod 303 and the second hinge rod 308 deflect inward along the positioning hollow rod block 307, the slider 203 moves inward along the inner cavity of the first hollow plate 202. At this time, the gas inside the first hollow plate 202 is compressed, causing the airbag connecting tube 601 to be pressurized and conduct airflow to the telescopic airbag block 602. The telescopic airbag block 602 changes from a compressed state to an outward convex state. At this time, under the positioning and clamping action of the corresponding slider 604, the telescopic airbag block 602 can only move along the inner cavity of the hollow block 603 with the corresponding slider 604, so that the side positioning component 5 can fit against one or both sides of the printer injection part. Together with the second hollow plate 204, it can perform side sealing of the printer injection part, which can achieve good sealing of the opening on the side of the printer injection part and improve the sealing effect.

[0049] The prior art document proposed in this invention uses the same sealing method of rubber pad, first rubber ring, second rubber ring and third rubber ring as this invention. The purpose is to avoid applying excessive pressure to the injection molded part during precision bonding, which would damage the injection molded part itself.

[0050] Example 4

[0051] like Figures 1-8As shown, based on the above embodiment one or two, a reverse threaded rod 108 is fixedly connected to the bottom end of the positive threaded rod 107. The upper mounting assembly 4 includes an upper mounting frame 401, and a telescopic positioning rod 402 is fixedly connected to the top end of the upper mounting frame 401. The reverse threaded rod 108 is threadedly installed on the top of the upper mounting frame 401. The positive threaded rod 107 and the reverse threaded rod 108 are sleeved inside the middle positioning block 104. Since the threaded guides of the positive threaded rod 107 and the reverse threaded rod 108 are set in opposite directions, the positive threaded rod 107 drives the hollow tube block 301 to move upward, while the guide protective shell 101 restricts the movement direction of the engaging mounting plate 201. Here it is explained, in conjunction with embodiment one... The proposed positioning hollow rod block 307 is rotatably mounted on the central positioning block 104, while the central positioning block 104 is fixedly mounted on the multi-position positioning block 109. Thus, the positioning hollow rod block 307 can only rotate in its original position. When the hollow tube block 301 moves upward, the second hinge rod 308 and the first hinge rod 303 move along the positioning hollow rod block 307 toward the direction of the printer injection part, while the reverse thread rod 108 drives the upper mounting frame 401 to move in the opposite direction, that is, toward the direction of the printer injection part. The sealing block set at the bottom of the upper mounting frame 401 fits against the top of the printer injection part, and the sealing block can be replaced according to the actual height of the printer injection part.

[0052] The multi-positioning block 109 limits the sliding range of the built-in threaded tube 302 and the sliding distance of the telescopic positioning rod 402 through the central positioning block 104. The side of the telescopic positioning rod 402 away from the upper mounting frame 401 is fixedly installed at the bottom of the central positioning block 104. With the forward and reverse motor 105 driving the reverse threaded rod 108 to rotate, since the thread guide of the reverse threaded rod 108 is opposite to that of the forward threaded rod 107, the moving direction between the built-in threaded tube 302 and the upper mounting frame 401 is opposite. When the sealing mounting component 2 drives the side positioning component 5 to wrap around the side of the printer injection part, the upper mounting frame 401 moves downward along the outside of the reverse threaded rod 108 through the telescopic positioning rod 402. The upper mounting frame 401 fits against the opening at the top of the printer injection part to achieve the sealing of the top of the printer injection part. Thus, together with the sealing mounting component 2 and the bidirectional deflection component 3, the various gaps of the printer injection part are relatively sealed to improve the accuracy of the test results.

[0053] The conduit located in the center of the lower component mounting bracket 102 is connected to the printer injection molded part. The other side of the conduit is connected to the booster pump and pressure reducer. The booster pump and pressure reducer adjust the air pressure inside the printer injection molded part through the conduit. The airtightness of the gas pressure inside the printer injection molded part can be observed by a pressure gauge, thereby detecting the change in the airtightness of the printer injection molded part. If the pressure value inside the sealed container changes significantly, the gas inside the container will continuously leak, causing the gas pressure inside the container to continuously decrease. This results in a significant change in the pressure value, indicating that there is a problem with the airtightness of the printer injection molded part. The change in pressure value reflects the leakage of gas inside the sealed container. When the gas pressure inside the sealed container reaches a certain value, if the gas pressure inside the container remains basically unchanged, it indicates that the airtightness of the printer injection molded part is good.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A device for testing the air tightness of injection molded parts for printers, comprising an air tightness testing support assembly (1), characterized in that: The air tightness testing support assembly (1) is equipped with a bidirectional deflection assembly (3) for adjusting the side wall sealing distance, and the bidirectional deflection assembly (3) is equipped with a sealing placement assembly (2). The airtightness testing support assembly (1) includes a guide protective shell (101), a lower component mounting frame (102) is fixedly installed on one side of the guide protective shell (101), and a forward and reverse motor (105) is fixedly installed on the other side of the guide protective shell (101). A positive thread rod (107) is fixedly installed at the output end of the forward and reverse motor (105). The bidirectional deflection assembly (3) includes a built-in threaded tube (302), which is threadedly connected to a positive threaded rod (107). Two hollow tube blocks (301) are fixedly connected to both sides of the built-in threaded tube (302). Two corresponding locking blocks (304) are slidably connected inside the two hollow tube blocks (301). Two rotating rods (305) are fixedly connected inside the two corresponding locking blocks (304). A first hinge rod (303) is hinged to both sides of one rotating rod (305), and a second hinge rod (308) is hinged to both sides of the other rotating rod (305). A positioning hollow rod block (307) is rotatably connected inside the first hinge rod (303) and the second hinge rod (308). Four locking mounting plates (201) are hinged on the first hinge rod (303) and the second hinge rod (308). The air tightness testing support assembly (1) is equipped with an upper mounting assembly (4) for sealing the top of the printer injection part on one side, and a side positioning assembly (5) for sealing the side of the printer injection part is installed on the sealing mounting assembly (2). The bottom end of the positive thread rod (107) is fixedly connected to the reverse thread rod (108), and the positive thread rod (107) and the reverse thread rod (108) are sleeved inside the middle positioning block (104); The upper placement assembly (4) includes an upper placement frame (401), the top of which is fixedly connected to a telescopic positioning rod (402). The side of the telescopic positioning rod (402) away from the upper placement frame (401) is fixedly installed at the bottom of the middle positioning block (104), and the reverse thread rod (108) is threadedly installed on the top of the upper placement frame (401).

2. The airtightness testing device for injection molded parts according to claim 1, characterized in that, The corresponding card block (304) is fixedly connected to the positioning slider (306) on the inner side of the hollow tube block (301), and an auxiliary spring (309) is fixedly connected between the positioning slider (306) and the hollow tube block (301).

3. The airtightness testing device for injection molded parts according to claim 2, characterized in that, The airtightness testing support assembly (1) also includes a locking ring (103), which is fixedly installed on the guide protective shell (101). A locking telescopic rod (106) is fixedly connected to one side of the locking ring (103). A slide positioning block (205) is slidably installed on one side of the locking telescopic rod (106). The slide positioning block (205) is fixedly installed on the outside of the locking mounting plate (201). A multi-position positioning block (109) is fixedly connected to one side of the guide protective shell (101). A central positioning block (104) is fixedly connected to one side of the multi-position positioning block (109). The positioning hollow rod block (307) is rotatably connected to the central positioning block (104).

4. The airtightness testing device for injection molded parts according to claim 3, characterized in that, The locking mounting plate (201) is located on both sides of the vertical center line of the positioning hollow rod block (307) and is slidably connected to the first hollow plate (202) by two sets of sliders (203). The other two sides of the locking mounting plate (201) are slidably connected to the second hollow plate (204) by two sliders (203).

5. The airtightness testing device for injection molded parts according to claim 4, characterized in that, The side positioning component (5) includes two sets of tilting rods (501), wherein the two sets of tilting rods (501) are fixedly installed on the second hollow plate (204), and a bidirectional connecting rod (502) is fixedly connected to the outside of the tilting rod (501). A bent rod (504) is hinged to the side of the tilting rod (501) away from the second hollow plate (204), and the bent rod (504) is hinged to the bidirectional connecting rod (502).

6. The airtightness testing device for injection molded parts according to claim 5, characterized in that, A rubber sealing block (505) is fixedly connected to the bending rod (504) and the bidirectional connecting rod (502) by a friction sticker, and an arc spring (503) is fixedly connected between the bending rod (504) and the inclined rod (501).

7. The airtightness testing device for injection molded parts according to claim 6, characterized in that, An airbag telescopic assembly (6) is installed between the sealing and placement assembly (2) and the side positioning assembly (5). The airbag telescopic assembly (6) includes a telescopic airbag block (602), which is fixedly installed on another set of bidirectional connecting rods (502). The telescopic airbag block (602) is installed inside the first hollow plate (202).

8. The airtightness testing device for injection molded parts according to claim 7, characterized in that, A corresponding slider (604) is fixedly connected to one side of the bidirectional connecting rod (502), and a cavity block (603) is slidably connected to one side of the corresponding slider (604). The cavity block (603) is fixedly installed on the first hollow plate (202). A spring (605) is fixedly installed between the corresponding slider (604) and the cavity block (603). The telescopic airbag block (602) is located inside the first hollow plate (202) and an airbag connecting tube (601) is installed. The telescopic airbag block (602) and the airbag connecting tube (601) are in a communicating state. The slider (203), the first hollow plate (202) and the airbag connecting tube (601) are in a sealed state.

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