Printer injection molding part air tightness detection device

Abstract

The invention belongs to the technical field of printer injection molding part detection devices, and particularly relates to a printer injection molding part air tightness detection device which comprises an air tightness detection supporting assembly and an upper placement assembly installed on the air tightness detection supporting assembly. The first hinge rod and the second hinge rod drive the clamping placement plate to move towards the edge of the printer injection molding part, and according to the scheme, the clamping placement plate drives the side edge positioning assembly to be directly attached to the interior of an outer side hole of the printer injection molding part, and the installation mode that in the prior art, the clamping placement plate directly slides along the edge of the printer injection molding part is replaced; meanwhile, rubber at the bottom of the upper placement assembly is attached to the side edge positioning assembly along with the cover of the upper placement assembly, so that a sealed environment is formed, rubber abrasion is relieved, inaccurate experimental results caused by rubber abrasion are avoided, and the experimental service life of the rubber is prolonged.

Description

Technical Field

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

[0002] Printer injection molded parts (such as ink cartridges and printhead assemblies) require extremely high airtightness. Even small leaks can lead to ink seepage and dust intrusion, directly impacting print quality and device life. Traditional detection methods (such as manual visual inspection and water immersion) are inefficient and unreliable, making them difficult to meet the demands of modern high-precision, automated production. Pressure / flow detection is currently the most common method. This method uses integrated sensors (such as differential pressure sensors and flow meters) and automated control systems (such as airtightness testers) to monitor pressure changes and identify leaks by injecting gas to improve detection accuracy and efficiency.

[0003] After searching, the patent with announcement number CN214843817U discloses an air tightness detection device for automotive aluminum alloy die-castings. The device can limit and fix the die-castings through the rubber pad, limit ring, first rubber ring, second rubber ring, and third rubber ring, and the pressure block to ensure stability during the detection process. At the same time, the die-castings can be sealed under the interaction of the rubber pad, first rubber ring, second rubber ring and third rubber ring, ensuring that the die-castings will not leak during the test, thereby improving the detection accuracy. The air tightness leak detector display shows the precise leakage amount of this test, and automatically determines whether the air tightness of the product to be tested is qualified without detection errors.

[0004] When used, the aforementioned testing device utilizes an airtightness test method to inspect printer injection molded parts. It seals the die-casting's air vents with a rubber ring to create a relatively closed environment. However, the device still uses a bottom-up method to slide the upper rubber ring and other sealing components along the surface of the printer injection molded part to a designated position. Due to the inherent shape of the printer injection molded part or the roughness of the surface when not finely polished, the rubber ring can be subject to significant friction and damage, resulting in low test accuracy. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for detecting the air tightness of injection molded parts of a printer, so as to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is as follows: a device for testing air tightness of injection-molded parts of a printer, comprising an air tightness testing support assembly, an upper placement assembly mounted on the air tightness testing support assembly, a bidirectional deflection assembly for adjusting the side wall sealing spacing mounted on the air tightness testing support assembly, a seal placement assembly mounted on the bidirectional deflection assembly, an upper placement assembly for sealing the top of the printer injection-molded part mounted on one side of the air tightness testing support assembly, and a side positioning assembly for sealing the side of the printer injection-molded part mounted on the seal placement assembly;

[0007] The airtightness detection support assembly includes a guide protective shell, a lower assembly mounting frame is fixedly mounted on one side of the guide protective shell, a forward and reverse motor is fixedly mounted on the other side of the guide protective shell, and a positive threaded rod is fixedly mounted on the output end of the forward and reverse motor;

[0008] The bidirectional deflection assembly includes an internal threaded tube, the internal threaded tube is threadedly connected to the main threaded rod, two hollow tube blocks are fixedly connected on both sides of the internal threaded tube, two corresponding clamping blocks are slidably connected inside the two hollow tube blocks, two rotating rods are fixedly connected inside the two corresponding clamping blocks, one rotating rod is hinged with a first hinge rod on both sides, and the other rotating rod is hinged with a second hinge rod on both sides, the first hinge rod and the second hinge rod are internally rotatably connected with a positioning hollow rod block, and four engaging placement plates are hinged on the first hinge rod and the second hinge rod;

[0009] The air tightness detection support assembly also includes a snap ring, which is fixedly installed on the guide protective shell, one side of the snap ring is fixedly connected to a snap-in telescopic rod, one side of the snap-in telescopic rod is slidably installed with a slide positioning block, the slide positioning block is fixedly installed on the outside of the snap-in placement plate, one side of the guide protective shell is fixedly connected to a multi-position positioning block, one side of the multi-position positioning block is fixedly connected to a middle positioning block, and the positioning hollow rod block is rotatably connected to the middle positioning block.

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

[0011] Optionally, the snap-fit ​​placement plates are located on both sides of the vertical center line of the positioning hollow rod block and are slidably connected to the first hollow plate through two sets of sliding blocks.

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

[0013] Optionally, the side positioning assembly includes two groups of tilting rods, wherein the two groups of tilting rods are fixedly mounted on the second hollow plate, and the outer sides of the tilting rods are fixedly connected with bidirectional connecting long rods.

[0014] Optionally, a bending rod is hinged to a side of the tilting rod away from the second hollow plate, and the bending rod is hinged to a bidirectionally connected long rod.

[0015] Optionally, a rubber sealing block is fixedly connected to the bending rod and the bidirectional connecting long rod via a friction paste, and an arc spring is fixedly connected between the bending rod and the tilting rod.

[0016] Optionally, an airbag telescopic assembly is installed between the sealing placement assembly and the side positioning assembly. The airbag telescopic assembly includes a telescopic airbag block. The telescopic airbag block is fixedly mounted on another set of two-way connected long rods, and the telescopic airbag block is installed in the first hollow plate.

[0017] Optionally, one side of the bidirectionally connected long rod is fixedly connected to a corresponding slider, one side of the corresponding slider is slidably connected to a cavity block, the cavity block is fixedly installed on the first hollow plate, a spring is fixedly installed between the corresponding slider and the cavity block, the telescopic airbag block is located inside the first hollow plate and is installed with an airbag connecting tube, and the telescopic airbag block and the airbag connecting tube are in a connected state, and the slider, the first hollow plate and the airbag connecting tube are arranged in a sealed state.

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

[0019] The upper placement assembly includes an upper placement frame, the top of which is fixedly connected to a telescopic positioning rod, the side of the telescopic positioning rod away from the upper placement frame is fixedly installed on the bottom of the middle positioning block, and the reverse threaded 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 the present invention drive the engaging mounting plate to move toward the edge of the printer injection molded part. Compared to the prior art method of sliding the mounting plate along the edge of the printer injection molded part, the present invention drives the side positioning assembly to directly fit into the outer hole of the printer injection molded part, thereby reducing wear between the rubber material and the printer injection molded part. At the same time, as the upper mounting assembly is covered, the rubber at the bottom of the upper mounting assembly fits with the side positioning assembly, 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. The rubber sealing block on the bending rod of the present invention is deflected toward the rubber sealing block on the bidirectionally connected long rod by the side pressure of the printer injection molded part, so that the bending rod and the rubber sealing block on the bidirectionally connected long rod fit in the notch on the side of the printer injection molded part. At the same time, the arc spring provides thrust to the rubber sealing block on the bending rod, so that the rubber sealing block on the side edge of the printer injection molded part can further contact the side of the printer injection molded part, thereby preventing airflow from leaking from the side seal of the printer injection molded part and improving the accuracy of the detection results.

[0023] 3. The airbag connecting tube of the present invention is pressurized to conduct the airflow to the telescopic airbag block, and the telescopic airbag block changes from a compressed state to an outwardly protruding state. The telescopic airbag block moves along the inner cavity direction of the cavity block with the corresponding slider under the positioning clamping of the corresponding slider, so that the side positioning component can be attached to one side of the printer injection molded part, and cooperate with the second hollow plate to better seal the opening on the side of the printer injection molded part, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[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 Schematic diagram of the enlarged structure at A in the middle;

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

[0027] Figure 4 This is a structural diagram of the clamping placement plate of the present invention;

[0028] Figure 5 Schematic diagram of the structure of the first hinge rod of the present invention;

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

[0030] Figure 7 Schematic diagram of the structure of the auxiliary spring of the present invention;

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

[0032] Figure 9 This is a schematic structural diagram of a bidirectionally connected long rod according to the present invention;

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

[0034] Figure 11 For the present invention Figure 10 Schematic diagram of the enlarged structure at B in the middle;

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

[0036] In the figure: 1. Airtightness detection support assembly; 101. Guide protection shell; 102. Lower assembly placement frame; 103. Clamping ring; 104. Middle positioning block; 105. Forward and reverse motor; 106. Clamping telescopic rod; 107. Positive threaded rod; 108. Reverse threaded rod; 109. Multi-position positioning block; 2. Sealing placement assembly; 201. Clamping placement plate; 202. First hollow plate; 203. Slider; 204. Second hollow plate; 205. Slide positioning block; 3. Bidirectional deflection assembly; 301. Hollow pipe block; 302. Built-in threaded pipe; 303. First Hinge rod; 304, corresponding card block; 305, rotating rod; 306, positioning slider; 307, positioning hollow rod block; 308, second hinge rod; 309, auxiliary spring; 4, upper placement assembly; 401, upper placement frame; 402, telescopic positioning rod; 5, side positioning assembly; 501, tilt rod; 502, two-way connecting long rod; 503, arc spring; 504, bending rod; 505, rubber sealing block; 6, airbag telescopic assembly; 601, airbag connecting tube; 602, telescopic airbag block; 603, cavity block; 604, corresponding slider; 605, spring. DETAILED DESCRIPTION

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

[0038] Example 1

[0039] like Figure 1-Figure 7 As shown, a device for testing air tightness of injection molded parts of a printer includes an air tightness testing support assembly 1, an upper placement 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 seal placement assembly 2 mounted on the bidirectional deflection assembly 3, an upper placement 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 seal placement assembly 2;

[0040] The airtightness detection support assembly 1 includes a guide protective housing 101, and a lower component mounting bracket 102 is fixedly installed on one side of the guide protective housing 101. When using the present invention to perform airtightness detection on printer injection molded parts, the printer injection molded parts are first placed corresponding to the lower component mounting bracket 102. A forward and reverse motor 105 is fixedly installed on the other side of the guide protective housing 101, and a positive threaded rod 107 is fixedly installed on the output end of the forward and reverse motor 105.

[0041] The bidirectional deflection assembly 3 includes an internal threaded tube 302, which is threadedly connected to the positive threaded rod 107. Two hollow tube blocks 301 are fixedly connected on both sides of the internal threaded tube 302. Two corresponding clamping blocks 304 are slidably connected inside the two hollow tube blocks 301. Two rotating rods 305 are fixedly connected inside the two corresponding clamping blocks 304. The two rotating rods 305 are hinged on both sides with a first hinge 303, and the other rotating rod 305 is hinged on both sides with a second hinge 308. The internal rotation of the first hinge 303 and the second hinge 308 is Connected with a positioning hollow rod block 307, four engaging mounting plates 201 are hinged on 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 guidance of the thread 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 clamping block 304 upward through the two hollow tube blocks 301. The second hinge rod 308 and the first hinge rod 303 transmit the pulling force through the rotating rod 305, so that the first hinge rod 303 and the second hinge rod 308 are closed inward. Figure 12 As shown, the first hinge 303 and the second hinge 308 are subjected to an inward tilting force, and the tilting force is first decomposed into a thrust along the horizontal line, so the distance between the first hinge 303 and the second hinge 308 becomes smaller. Since the first hinge 303 and the second hinge 308 are symmetrical along the upper and lower centers of the connection, the upper and lower distance changes of the first hinge 303 and the second hinge 308 are the same, so the distance between the first hinge 303 and the second hinge 308 is correspondingly reduced in the same manner. At the same time, the tilting force is further decomposed into a vertical upward thrust. Therefore, the corresponding clamping block 304 moves upward with the hollow tube block 301, and at the same time, the horizontal movement of the second hinge 308 and the first hinge 303 is completed. Under the action of thrust, it slides inward along the inside of the hollow tube block 301. At this time, the first hinge rod 303 and the second hinge rod 308 drive the engaging placement plate 201 to move toward the edge of the printer injection molded part, thereby driving the side positioning component 5 to directly fit into the outer hole of the printer injection molded part. Compared with the existing technology in which the engaging placement plate is installed by sliding along the edge of the printer injection molded part, the wear between the rubber material and the printer injection molded part can be reduced. At the same time, with the cover of the upper placement component 4, the rubber at the bottom of the upper placement component 4 fits with 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 detection support assembly 1 also includes a snap ring 103, which is fixedly mounted on the guide protective housing 101. One side of the snap ring 103 is fixedly connected to a snap-in telescopic rod 106, and one side of the snap-in telescopic rod 106 is slidably mounted with a slide positioning block 205. The slide positioning block 205 can limit the moving distance and moving direction of the snap-in telescopic rod 106, so that the connection between the snap-in telescopic rod 106 and the slide positioning block 205 can only be moved in the sliding direction. The guide rail positioning block 205 slides in the guide rail positioning block 205, which is fixedly mounted on the outer side of the locking placement plate 201. One side of the guide protective shell 101 is fixedly connected to a multi-position positioning block 109, and one side of the multi-position positioning block 109 is fixedly connected to the middle positioning block 104. The positioning hollow rod block 307 is rotatably connected to the middle 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, and the first hinge rod 303 and the second hinge rod 308 can perform opening and closing movements. With the movement of the locking plate 201, the positioning telescopic rod 106 slides on the locking plate 201 through the slide positioning block 205 and performs corresponding telescopic movements, so that the built-in threaded tube 302 always slides on the positive threaded rod 107. The corresponding card block 304 is located on the inner side of the hollow tube block 301 and is fixedly connected to the positioning slider 306. An auxiliary spring 309 is fixedly connected between the slider 306 and the hollow tube block 301. When the corresponding clamping block 304 deflects along with the second hinge rod 308 and the positioning hollow rod block 307, the corresponding clamping block 304 drives the positioning slider 306 to slide along the inner cavity of the hollow tube block 301 accordingly, thereby providing support for the opening and closing movement 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 plate 201 is located on both sides of the vertical centerline of the positioning hollow rod block 307 and is slidably connected to the first hollow plate 202 through two sets of sliders 203. The other two sides of the locking plate 201 are slidably connected to the second hollow plate 204 through two sliders 203. As the first hinge 303 and the second hinge 308 deflect inward or outward along the positioning hollow rod block 307, the first hinge 303 and the second hinge 308 gradually approach the printer injection molded part. The first hollow plate 202 and the sliders 203 change with the distance between the first hinge 303 and the second hinge 308, so that the sliders 203 slide correspondingly along the inner cavity 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 always remains perpendicular to the ground during the movement, the locking ring 103 must be clamped. Therefore, as the locking plate 201 moves downward and inward, relative telescopic movement needs to occur between the locking telescopic rod 106 and the locking ring 103, and the locking ring 103 remains in place, which will cause the locking telescopic rod 106 to move relatively upward along the slide positioning block 205.

[0044] Example 2

[0045] like Figure 9 As shown, based on Example 1, the side positioning assembly 5 includes two groups of tilting rods 501, wherein the two groups of tilting rods 501 are fixedly mounted on the second hollow plate 204, and the outer sides of the tilting rods 501 are fixedly connected with bidirectionally connected long rods 502, and the side of the tilting rods 501 away from the second hollow plate 204 is hinged with a bending rod 504, and the bending rod 504 is hinged on the bidirectionally connected long rod 502.

[0046] In this embodiment, a rubber sealing block 505 is fixedly connected to the bending rod 504 and the bidirectional connecting long rod 502 through a friction patch. According to the different shapes of the printer injection molded parts, the bending rod 504 can be installed with different packaging components to fully seal the gaps of the printer injection molded parts of different shapes. An arc spring 503 is fixedly connected between the bending rod 504 and the tilting rod 501. As the rubber sealing block 505 contacts the side gap of the printer injection molded part, the rubber sealing block 505 is fully squeezed with the side of the printer injection molded part. At this time, the rubber sealing block on the bending rod 504 505 is deflected toward the position of the rubber sealing block 505 on the two-way connecting long rod 502 by the side pressure of the printer injection molded part, so that the bending rod 504 and the rubber sealing block 505 on the two-way connecting long rod 502 fit in the notch on the side of the printer injection molded part. At the same time, the arc spring 503 provides thrust for 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 molded part can further contact the side of the printer injection molded part, thereby preventing airflow from leaking from the side seal of the printer injection molded part, thereby improving the accuracy of the detection results.

[0047] Example 3

[0048] like Figures 8-11As shown, based on the above-mentioned embodiment one or two, an airbag telescopic assembly 6 is installed between the sealing placement assembly 2 and the side positioning assembly 5, and the airbag telescopic assembly 6 includes a telescopic airbag block 602, which is fixedly installed on another set of two-way connected long rods 502, and the telescopic airbag block 602 is installed in the first hollow plate 202. One side of the two-way connected long rod 502 is fixedly connected with a corresponding slider 604, and one side of the corresponding slider 604 is slidably connected with a cavity block 603, which is fixedly installed on the first hollow plate 202, and 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 is installed with an airbag connecting tube 601, and the telescopic airbag block 602 is in a connected state with the airbag connecting tube 601, and the slider 203 and the first hollow plate 202 are in a connected state. It is set in a sealed state with the airbag connecting tube 601. 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 squeezed, so that the airbag connecting tube 601 is pressurized to conduct the airflow to the telescopic airbag block 602, and the telescopic airbag block 602 changes from a compressed state to an outwardly protruding state. At this time, the telescopic airbag block 602 can only move along the inner cavity direction of the cavity block 603 along the corresponding slider 604 under the positioning and clamping action of the corresponding slider 604, so that the side positioning component 5 can be attached to one of the two sides of the printer injection molded part, and cooperate with the second hollow plate 204 to seal the side of the printer injection molded part, so as to achieve good sealing of the opening on the side of the printer injection molded part, thereby improving the sealing effect.

[0049] In the comparative document proposed by the present invention, the sealing method using the rubber pad, the first rubber ring, the second rubber ring and the third rubber ring is the same as that of the present invention, all of which are to avoid excessive pressure on the injection molded part during precise fitting and damage to the injection molded part itself.

[0050] Example 4

[0051] like Figures 1-8As shown, based on the above-mentioned embodiment one or two, the bottom end of the positive threaded rod 107 is fixedly connected to the reverse threaded rod 108, the upper placement component 4 includes an upper placement frame 401, the top of the upper placement frame 401 is fixedly connected to the telescopic positioning rod 402, the reverse threaded rod 108 is threadedly installed on the top of the upper placement frame 401, the positive threaded rod 107 and the reverse threaded rod 108 are sleeved in the inside of the middle positioning block 104, because the thread 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, and the guide protective shell 101 limits the moving direction of the engaging placement plate 201. It is explained here that, combined with embodiment one The proposed positioning hollow rod block 307 is rotatably mounted on the middle positioning block 104, and the middle positioning block 104 is fixedly mounted on the multi-position positioning block 109. Therefore, the positioning hollow rod block 307 can only rotate in place. 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 printer injection molded part, and the reverse threaded rod 108 drives the upper mounting frame 401 to move in the opposite direction, that is, toward the printer injection molded part. The sealing block provided at the bottom of the upper mounting frame 401 fits against the top of the printer injection molded part, and the sealing block can be replaced according to the actual height of the printer injection molded part.

[0052] The multi-position positioning block 109 limits the sliding range of the built-in threaded tube 302 and the sliding spacing of the telescopic positioning rod 402 through the middle positioning block 104. The telescopic positioning rod 402 is fixedly installed on the bottom of the middle positioning block 104 on the side away from the upper mounting frame 401. It rotates with the forward and reverse motors 105 to drive the reverse-threaded rod 108. Since the thread guides of the reverse-threaded rod 108 and the forward-threaded rod 107 are opposite, the movement directions of the built-in threaded tube 302 and the upper mounting frame 401 are opposite. When the sealing mounting assembly 2 drives the side positioning assembly 5 to wrap around the side of the printer injection molded part, the upper mounting frame 401 moves downward along the outer side of the reverse-threaded rod 108 through the telescopic positioning rod 402. The upper mounting frame 401 fits the opening at the top of the printer injection molded part to achieve sealing of the top of the printer injection molded part, thereby cooperating with the sealing mounting assembly 2 and the bidirectional deflection assembly 3 to relatively seal the various notches of the printer injection molded part to improve the accuracy of the detection results.

[0053] The conduit provided at the center of the lower component mounting frame 102 is connected to the printer injection molded part, and the other side of the conduit is connected to the booster pump and the pressure reducer. The booster pump and the pressure reducer adjust the air pressure in the printer injection molded part through the conduit. The airtightness of the gas pressure in the printer injection molded part can be observed by a pressure gauge, thereby detecting the change state of the airtightness in the printer injection molded part. If the pressure value in the closed container changes greatly, the gas in the container will continue to leak, causing the gas pressure in the container to continue to decrease, resulting in a large change in the pressure value, indicating that there is a problem with the airtightness of the printer injection molded part, and the change in the pressure value reflects the leakage of the gas inside the closed container; when the gas pressure in the closed container reaches a certain value, if the gas pressure in the container remains basically unchanged, it means 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, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly 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 inspirations of the above embodiments, those skilled in the art may make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A device for detecting air tightness of injection molded parts of a printer, comprising an air tightness detection support assembly (1), characterized in that: A bidirectional deflection assembly (3) for adjusting the side wall sealing distance is installed on the airtightness detection support assembly (1), and a sealing placement assembly (2) is installed on the bidirectional deflection assembly (3); The airtightness detection support assembly (1) comprises a guide protection housing (101), a lower assembly mounting frame (102) is fixedly mounted on one side of the guide protection housing (101), a forward and reverse motor (105) is fixedly mounted on the other side of the guide protection housing (101), and a positive threaded rod (107) is fixedly mounted on the output end of the forward and reverse motor (105); The bidirectional deflection assembly (3) comprises an internal threaded tube (302), the internal threaded tube (302) being threadedly connected to a positive threaded rod (107), two hollow tube blocks (301) being fixedly connected on both sides of the internal threaded tube (302), two corresponding clamping blocks (304) being slidably connected inside the two hollow tube blocks (301), two rotating rods (305) being fixedly connected inside the two corresponding clamping blocks (304), one rotating rod (305) being hingedly connected to a first hinge rod (303) on both sides, and the other rotating rod (305) being hingedly connected to a second hinge rod (308) on both sides, the first hinge rod (303) and the second hinge rod (308) being rotatably connected inside with a positioning hollow rod block (307), and four engaging placement plates (201) being hingedly connected to the first hinge rod (303) and the second hinge rod (308).

2. The device for detecting air tightness of injection molded parts of a printer according to claim 1, characterized in that: The corresponding clamping block (304) is located inside the hollow tube block (301) and is fixedly connected to a positioning slider (306). An auxiliary spring (309) is fixedly connected between the positioning slider (306) and the hollow tube block (301).

3. The device for detecting air tightness of injection molded parts of a printer according to claim 2, characterized in that: The airtightness detection support assembly (1) further comprises a snap ring (103), the snap ring (103) being fixedly mounted on the guide protection housing (101), a snap-type telescopic rod (106) being fixedly connected to one side of the snap-type telescopic rod (106), a slideway positioning block (205) being slidably mounted to one side of the snap-type telescopic rod (106), the slideway positioning block (205) being fixedly mounted on the outer side of the snap-type placement plate (201), a multi-position positioning block (109) being fixedly connected to one side of the guide protection housing (101), a middle positioning block (104) being fixedly connected to one side of the multi-position positioning block (109), and the positioning hollow rod block (307) being rotatably connected to the middle positioning block (104).

4. The device for detecting air tightness of injection molded parts of a printer according to claim 3, characterized in that: The snap-fit ​​placement plate (201) is located on both sides of the vertical center line of the positioning hollow rod block (307) and is slidably connected to a first hollow plate (202) via two sets of sliders (203); the other two sides of the snap-fit ​​placement plate (201) are slidably connected to a second hollow plate (204) via two sliders (203).

5. The device for detecting air tightness of injection molded parts of a printer according to claim 4, characterized in that: An upper placement component (4) for sealing the top of the printer injection molded part is installed on one side of the airtightness detection support component (1), and a side positioning component (5) for sealing the side of the printer injection molded part is installed on the sealing placement component (2).

6. The device for detecting air tightness of injection molded parts of a printer according to claim 5, characterized in that: The side positioning assembly (5) comprises two groups of tilting rods (501), wherein the two groups of tilting rods (501) are fixedly mounted on the second hollow plate (204), the outer sides of the tilting rods (501) are fixedly connected with bidirectionally connected long rods (502), and the side of the tilting rods (501) away from the second hollow plate (204) is hinged with a bending rod (504), and the bending rod (504) is hinged on the bidirectionally connected long rod (502).

7. The device for detecting air tightness of injection molded parts of a printer according to claim 6, characterized in that: A rubber sealing block (505) is fixedly connected to the bending rod (504) and the bidirectional connecting long rod (502) via a friction patch, and an arc spring (503) is fixedly connected between the bending rod (504) and the tilting rod (501).

8. The device for detecting air tightness of injection molded parts of a printer according to claim 7, characterized in that: An airbag telescopic assembly (6) is installed between the sealing placement assembly (2) and the side positioning assembly (5), and the airbag telescopic assembly (6) includes a telescopic airbag block (602). The telescopic airbag block (602) is fixedly installed on another set of two-way connecting long rods (502), and the telescopic airbag block (602) is installed in the first hollow plate (202).

9. The device for detecting air tightness of injection molded parts of a printer according to claim 8, characterized in that: One side of the bidirectionally connected long rod (502) is fixedly connected to a corresponding slider (604), and one side of the corresponding slider (604) is slidably connected to a cavity block (603). 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 is installed with an airbag connecting tube (601). The telescopic airbag block (602) and the airbag connecting tube (601) are in a communicating state, and the slider (203), the first hollow plate (202) and the airbag connecting tube (601) are arranged in a sealed state.

10. The device for detecting air tightness of injection molded parts of a printer according to claim 9, characterized in that: The bottom end of the positive threaded rod (107) is fixedly connected to a reverse threaded rod (108), and the positive threaded rod (107) and the reverse threaded rod (108) are sleeved inside the middle positioning block (104); The upper placement assembly (4) comprises an upper placement frame (401), the top end of the upper placement frame (401) 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 mounted on the bottom of the middle positioning block (104), and the reverse threaded rod (108) is threadedly mounted on the top of the upper placement frame (401).

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