Vacuum testing box with quick-change multi-chamber carrier

Abstract

This utility model discloses a vacuum-resistant testing chamber with a quick-change multi-cavity carrier. The vacuum-resistant testing chamber includes: multiple quick-change fixtures, a testing chamber, and a multi-cavity carrier; the quick-change fixtures have horizontally open guide grooves and integrally connected contoured slots at the ends of the horizontal guide grooves, the lower edge of the contoured slots being lower than the lower wall height of the horizontal guide grooves; multiple quick-change fixtures can be detachably connected to both longitudinal and / or transverse sides of the testing chamber, the horizontal guide groove openings of the quick-change fixtures on both longitudinal and transverse sides facing the same direction; the frame of the multi-cavity carrier is divided into multiple product cavities in a rectangular array by horizontal plates, and the lower connecting rod of the frame fits into the contoured slot; the multi-cavity carrier is placed into the chamber, and the lower connecting rod is pushed through the horizontal guide groove into the corresponding contoured slot, thereby quickly changing the multi-cavity carrier. This utility model has the advantages of quick-change multi-cavity carriers and applicability to various product packaging tests.

Description

Technical Field

[0001] This utility model relates to the field of testing devices, and in particular to an anti-vacuum testing box with a quick-change multi-chamber carrier. Background Technology

[0002] In vacuum testing of bagged packaging, a product carrier with a product cavity is installed inside the test chamber, and one product to be tested is placed in the product cavity. To improve testing efficiency, for vacuum testing of batch products, a multi-cavity product carrier is used to test multiple product packages simultaneously. When the product carrier is fixedly installed inside the test chamber, its drawbacks are as follows: First, the fixed installation of the product carrier cannot be used for product packages of different sizes, resulting in poor applicability of the test chamber. Second, in order to use product packages of different sizes, the entire test chamber must be replaced or different test machines must be purchased. The testing unit needs to have multiple types of test chambers, each of which is suitable for product packages within a certain size range. The total number of parts for the complete machine or each test chamber is large, resulting in high fixed costs and a large equipment footprint. Third, replacing the entire test chamber requires the removal of related modules such as water circuits, electrical circuits, and vacuum circuits, which is complex and reduces testing efficiency. Utility Model Content

[0003] To address one or more of the aforementioned problems, this invention provides an anti-vacuum testing box with a quick-change multi-chamber carrier.

[0004] According to one aspect of the present invention, the vacuum testing box with quick-change multi-cavity carrier includes: multiple quick-change fixtures, a test box, and a multi-cavity carrier;

[0005] The quick-change fixture includes a vertical body, with a horizontal guide groove with a side opening at the upper end of the vertical body and a contoured slot integrally connected to the end of the horizontal guide groove. The lower edge of the contoured slot is lower than the height of the lower wall of the horizontal guide groove.

[0006] The test chamber includes a rectangular box made of transparent plastic that can be opened and sealed, and a top cover. Multiple quick-change fixtures can be detachably connected to both longitudinal and / or transverse sides inside the box. The horizontal guide grooves of the quick-change fixtures on both longitudinal sides face the same direction, and the horizontal guide grooves of the quick-change fixtures on both transverse sides face the same direction.

[0007] The multi-cavity carrier includes a three-dimensional rectangular frame, within which multiple product cavities are divided into a rectangular array by a horizontal plate holder, and the vertical cross-section of the lower connecting rod of the frame is matched with the vertical cross-section of the contoured slot.

[0008] The multi-cavity carrier is placed into the housing, and the longitudinal and transverse lower connecting rods are located on the open sides of the longitudinal and transverse horizontal guide grooves, respectively. The lower connecting rods are pushed sequentially through the horizontal guide grooves and slid into the corresponding contour slots, thereby quickly changing the multi-cavity carrier.

[0009] In some embodiments, a vertical end block is provided on one side of the upper end of the vertical body. The upper end of the vertical end block is integrally vertically connected to a horizontal limiting plate and the lower end is integrally vertically connected to a horizontal guide wall. The limiting plate and the guide wall surround and form a horizontal guide groove with a side opening. A contoured slot is provided below the end of the limiting plate.

[0010] In some implementations, the lower connecting rod is a round rod, and the contoured slot is an arc groove.

[0011] In some embodiments, the length of the limiting plate is shorter than the length of the guide wall, and the open sides of the limiting plate and the guide wall also form a vertical inlet and a horizontal temporary storage surface, with the lower connecting rod entering the horizontal temporary storage surface from the vertical inlet.

[0012] In some implementations, a chamfered guide surface is also formed at the lower wall port of the limiting plate.

[0013] In some embodiments, the vertical body is rectangular, and the lower end of the vertical body extends outward horizontally to form a connecting foot. The connecting foot is provided with multiple stepped through holes, and the cylindrical head screw passes through the stepped through holes to threadedly connect to the first threaded blind hole on the lower wall of the housing.

[0014] In some implementations, the housing is provided with two rows of parallel quick-change fixtures, with the spacing between adjacent quick-change fixtures in each row being the same.

[0015] In some embodiments, the upper wall of the guide wall is also provided with a number of axially spaced limiting holes, each limiting hole having a receiving cavity at its lower end, and a number of limiting balls floating vertically in the receiving cavity with their spherical surfaces protruding from the limiting hole.

[0016] In some embodiments, the receiving cavity is a vertical shaft hole with a screw hole at the end, and the wall of the limiting hole is spherical;

[0017] The vertical shaft hole end is threaded to a countersunk threaded part, and a vertical elastic element is provided between the countersunk threaded part and the limiting ball;

[0018] Countersunk threaded parts are cylindrical head screws, and the limiting balls are vertical springs or rubber cylinders.

[0019] In some embodiments, the frame includes four vertical columns, with the upper and lower ends of the vertical columns respectively connected to the four corners of two horizontal frame pieces, thereby forming a three-dimensional rectangular structure.

[0020] The horizontal frame includes vertically connected longitudinal and transverse connecting rods, with the lowest longitudinal and transverse connecting rods forming the lower connecting rod of the frame;

[0021] The horizontal frame also has several intermediate connecting rods at equal intervals, and multiple vertical connecting rods are provided between the intermediate connecting rods, thus forming multiple product cavities.

[0022] This vacuum testing chamber, through the use of quick-change fixtures and matching multi-cavity carriers, allows for rapid replacement of the multi-cavity carriers. Only one testing chamber and multiple multi-cavity carriers of various product cavity sizes are needed to perform vacuum testing on various product packaging. Its advantages are: First, by quickly changing multi-cavity carriers of different product cavity sizes, it can be used for product packaging of different sizes, especially irregularly shaped product packaging. Only a multi-cavity carrier of a specific product cavity size is needed to complete the test using existing equipment, making the testing chamber highly adaptable. Second, this structure only requires multiple sizes of product carriers, resulting in low carrier cost and small footprint. Third, changing the product carrier only requires pushing the multi-cavity carrier into the conformal slot to complete the replacement and positioning; there is no need to dismantle related modules such as water circuits, electrical circuits, and vacuum circuits, simplifying operation and improving testing efficiency. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of an anti-vacuum testing box with a quick-change multi-cavity carrier according to one embodiment of the present invention.

[0024] Figure 2 for Figure 1 The diagram shows a three-dimensional schematic of the internal structure of the vacuum testing chamber.

[0025] Figure 3 for Figure 2 A three-dimensional schematic diagram of the bottom plate of the box shown;

[0026] Figure 4 for Figure 2 A three-dimensional schematic diagram of the quick-change fixture shown;

[0027] Figure 5 for Figure 2 The diagram shows a three-dimensional schematic of the quick-change fixture with limit ball bearings installed.

[0028] Figure 6 for Figure 5 A cross-sectional view of the quick-change fixture shown.

[0029] Figure 7 For having Figure 1 The diagram shows a front view of the testing device in the vacuum testing chamber.

[0030] Quick-change fixture 1, vertical body 10, horizontal guide groove 101, contoured slot 102, limiting plate 11, guide surface 111, guide wall 12, limiting hole 121, receiving cavity 122, vertical end block 13, connecting foot 14, stepped through hole 141.

[0031] Test box 2, box body 20, first thread blind hole 200, water inlet 201, drain outlet 202, top cover 21, lower boss 210, handle 22, fixing fixture 23;

[0032] Multi-cavity carrier 3, frame 30, vertical connecting column 301, lower connecting rod 302, horizontal plate frame 31, longitudinal connecting rod 311, transverse connecting rod 312, intermediate connecting rod 313, vertical connecting rod 32;

[0033] 4. Limiting ball bearings; 5. Countersunk threaded parts; 6. Vertical elastic parts;

[0034] 7. Rapid air delivery tube; 8. Air guide seat;

[0035] abutment01;

[0036] Vacuum pump 02, vacuum pump 020, vacuum connector 021, vacuum block 022, vacuum pressure gauge 023;

[0037] Water circulation unit 03, water tank 030, inlet pipe 031, outlet pipe 032, circulation pump 033;

[0038] Control box 04. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0040] Figures 1 to 7 A vacuum testing chamber with quick-change multi-chamber carrier according to one embodiment of the present invention is schematically shown. As shown, the vacuum testing chamber includes: multiple quick-change fixtures 1, a test chamber 2, and a multi-chamber carrier 3;

[0041] The quick-change fixture 1 includes a vertical body 10, with a horizontal guide groove 101 with a side opening at the upper end of the vertical body 10 and a contoured slot 102 integrally connected to the end of the horizontal guide groove 101. The lower edge of the contoured slot 102 is lower than the height of the lower wall of the horizontal guide groove 101.

[0042] The test box 2 includes a rectangular box 20 made of transparent plastic and which can be opened and sealed, and a top cover 21. Multiple quick-change fixtures 1 can be detachably connected to the longitudinal sides and / or transverse sides inside the box 20. The horizontal guide grooves 101 of the quick-change fixtures 1 on the longitudinal sides face the same direction, and the horizontal guide grooves 101 of the quick-change fixtures 1 on the transverse sides face the same direction.

[0043] The multi-cavity carrier 3 includes a three-dimensional rectangular frame 30, and multiple product cavities are divided into a rectangular array by a horizontal plate holder 31 within the frame 30. The vertical section of the lower connecting rod 302 of the frame 30 is fitted with the vertical section of the contoured slot 102.

[0044] The multi-cavity carrier 3 is placed into the housing 20. The longitudinal and transverse lower connecting rods 302 are located on the open side of the longitudinal and transverse horizontal guide grooves 101, respectively. The lower connecting rods 302 are pushed in sequence through the horizontal guide grooves 101 and slide into the corresponding contoured slots 102, thereby quickly changing the multi-cavity carrier 3.

[0045] This vacuum resistance testing chamber, through the setting of a quick-change fixture 1 and a matching multi-cavity carrier 3, allows for rapid replacement of the multi-cavity carrier 3. Only one testing chamber 2 and multiple multi-cavity carriers 3 of various product cavity sizes are needed to achieve vacuum resistance testing of various product packaging. Its advantages are: First, by quickly changing the multi-cavity carriers 3 of different product cavity sizes, it can be used for product packaging of different sizes, especially irregularly shaped product packaging. Only a multi-cavity carrier 3 of a specific product cavity size is needed to complete the test using existing equipment, making the testing chamber highly adaptable. Second, this structure only requires multiple sizes of product carriers 3, resulting in low cost and small footprint. Third, replacing the product carrier 3 only requires pushing the multi-cavity carrier 3 into the contour slot 102 to complete the replacement and positioning; there is no need to dismantle related modules such as water circuits, electrical circuits, and vacuum resistance circuits, simplifying operation and improving testing efficiency.

[0046] Furthermore, a vertical end block 13 is provided on one side of the upper end of the vertical body 10. The upper end of the vertical end block 13 is integrally vertically connected to the horizontal limiting plate 11, and the lower end is integrally vertically connected to the horizontal guide wall 12. The limiting plate 11 and the guide wall 12 surround and form a side-opening horizontal guide groove 101. A contoured slot 102 is provided below the end of the limiting plate 11. Preferably, the lower connecting rod 302 is a round rod, and the contoured slot 102 is an arc groove. Its beneficial effects are: this setting facilitates operation and can improve positioning accuracy.

[0047] Preferably, the length of the limiting plate 11 is shorter than the length of the guide wall 12. The open sides of the limiting plate 11 and the guide wall 12 also form a vertical inlet and a horizontal temporary storage surface, through which the lower connecting rod 302 enters the horizontal temporary storage surface. Preferably, the lower wall end of the limiting plate 11 also forms a chamfered guide surface 111. The beneficial effect is that this design further improves operational convenience and allows for quick replacement.

[0048] Preferably, the vertical body 10 is rectangular, and the lower end of the vertical body 10 extends horizontally outward to form a connecting foot 14. The connecting foot 14 is provided with multiple stepped through holes 141, and a cylindrical head screw passes through the stepped through holes 141 and is threaded to the first threaded blind hole 200 on the lower wall of the housing 20. The beneficial effect is that this arrangement can ensure the sealing of the housing 20.

[0049] Furthermore, the housing 20 is equipped with two rows of parallel quick-change fixtures 1, with the same spacing between adjacent quick-change fixtures 1 in each row. The advantage of this design is that it further reduces the number of operating steps and improves the ease of replacement.

[0050] Preferably, the upper wall of the guide wall 12 is further provided with a plurality of axially spaced limiting holes 121. Each limiting hole 121 has a receiving cavity 122 at its lower end. A plurality of limiting balls 4 are vertically floating in the receiving cavity 122 with their spherical surfaces protruding from the limiting hole 121. The receiving cavity 122 is a vertical shaft hole with a screw hole at the end. The hole wall of the limiting hole 121 is spherical. The end of the vertical shaft hole is threaded to a countersunk threaded part 5. A vertical elastic part 6 is also provided between the countersunk threaded part 5 and the limiting balls 4. The countersunk threaded part 5 is a cylindrical head screw, and the limiting balls 4 are vertical springs or rubber pillars. Its beneficial effect is that this arrangement can fix the limiting multi-cavity carrier 3 with high precision, which is beneficial to the stability of vacuum testing.

[0051] Furthermore, the frame 30 includes four vertical columns 301, with the upper and lower ends of the vertical columns 301 respectively vertically connected to the four corners of the two horizontal frame 31, thus forming a three-dimensional rectangular structure.

[0052] The horizontal frame 31 includes vertically connected longitudinal connecting rods 311 and transverse connecting rods 312, with the lowest longitudinal connecting rods 311 and transverse connecting rods 312 forming the lower connecting rod 302 of the frame 30;

[0053] The horizontal frame 31 also has several intermediate connecting rods 313 spaced at equal intervals, and multiple vertical connecting rods 32 are provided between the intermediate connecting rods 313, thus forming multiple product cavities. Its advantages are: the multi-cavity carrier 3 of this structure is simple in structure, easy to manufacture, and easy to realize the setting of multiple product cavities.

[0054] Furthermore, a rectangular lower boss 210 is formed in the middle of the lower wall of the upper cover 21, and a rectangular ring-shaped positioning shoulder is formed around the perimeter of the lower wall. The lower boss 210 is inserted into the rectangular port of the housing 20, and the positioning shoulder is sealed and fitted to the upper end wall of the housing 20, so that the housing 20 and the upper cover 21 are tightly connected into one piece.

[0055] The positioning shoulder 212 has an annular closed sealing groove on its wall surface. The sealing groove is interference-fitted to the upper end of the annular sealing ring. When the positioning shoulder is in contact with the upper wall of the housing 20, the sealing ring deforms vertically and elastically presses against the sealing interface. The sealing ring is made of nitrile rubber. Its advantages are: the test chamber 2 with this design has high sealing performance and is easy to operate.

[0056] The casing 20 and the top cover 21 are made of PMMA (polymethyl methacrylate) acrylic or plexiglass. The advantages are that this material has good processability and transparency.

[0057] The test chamber 2 also includes two handles 22, the two ends of which are connected to the vertical connecting blind holes of the upper cover 21 by screws. The beneficial effect is that the blind hole structure reduces external leakage points and ensures the high sealing performance of the cavity.

[0058] The test box 2 also includes two fixing fixtures 23. The inner pin holes of the two fixing fixtures 23 and the outer pin holes of the blind hole structure on both sides of the box body 20 are fixedly connected by fixing pins. The first stepped through hole of the fixing fixture 23 and the upper surface of the box body 20 are fixedly connected by cylindrical head screws.

[0059] The chamber 20 is also equipped with a flow guide seat 8, which includes an upper guide plate and multiple legs fixedly connected to the lower end of the upper guide plate. Flow guide holes are located between the multiple legs. The legs are threadedly connected to the upper wall of the chamber 20, and the upper guide plate is directly opposite the water inlet 201. Its beneficial effect is to change the liquid flow from vertical to horizontal, avoiding damage to the test piece from the impact of the turbulent flow.

[0060] The test chamber 2 also includes a transparent quick-release air tube 7. Two right-angle elbows are threaded onto the side surface of the chamber body 20, and the right-angle elbows are fixedly connected to each other via the quick-release air tube 7. The chamber body 20 is also fixedly connected with a clip that holds the middle section of the quick-release air tube 7. The advantages of this design are: it facilitates observation and measurement, and provides high detection accuracy.

[0061] Furthermore, the upper surface of the upper plate of the base 01 is fixedly connected to the housing 20, and the lower surface is connected to the water circulation part 03. The upper surface of the cover 21 is connected to the vacuum part 02 and is equipped with a pressure gauge 04. The base 01 is a hollow three-dimensional frame.

[0062] Preferably, the electromagnetic inlet valve and electromagnetic drain valve of the water circulation section 03 are respectively installed on the inlet 201 and drain outlet 202 on the lower surface of the housing 20. The electromagnetic inlet valve and electromagnetic drain valve are connected to the inlet pipe 031 and drain pipe 032, and the electromagnetic inlet valve and electromagnetic drain valve control the opening and closing. The water tank 030 of the water circulation section 03 is fixedly connected to the lower end of the base 01 and is equipped with a circulation pump 033. The outlet of the circulation pump 033 is connected to the lower end of the inlet pipe 031, and the return water outlet of the water tank 03 is connected to the lower end of the drain pipe 032.

[0063] Preferably, the vacuum pump 020 of the vacuum unit 02 is located within the frame of the base 01 and is connected to the vacuum connector 021 via a vacuum tube. The threaded section of the vacuum connector 021 is coated with sealant, and the threaded section is screwed into the air hole, with the sealant filling the threaded connection between the two.

[0064] A vacuum block 022 is also installed on the upper surface of the cover 21. A right-angle connecting hole is provided in the vacuum block 25. A vacuum pressure gauge 023 is fixedly connected to one side of the vacuum block 022. The sensitive end of the vacuum pressure gauge 023 extends into the right-angle connecting hole, and the lower end of the right-angle connecting hole is connected to the detection through hole of the cover 21. The vacuum pressure gauge 023 is equipped with a display screen and an alarm.

[0065] The lower end of the vacuum block 022 is provided with an annular groove, and an O-ring is interference-fitted in the annular groove. When the vacuum block 022 is threaded onto the upper cover 21, the O-ring seals the connection interface.

[0066] It also includes a control box 04, which is electrically connected to an electromagnetic inlet valve, an electromagnetic drain valve, a vacuum pump 020, a circulation pump 033, and a vacuum pressure gauge 023. Its advantages are: this setup facilitates automated testing and has a compact overall layout.

[0067] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A vacuum resistant detection box with a quick-change multi-cavity carrier, characterized in that, Includes: multiple quick-change fixtures (1), a test chamber (2), and a multi-cavity carrier (3); The quick-change fixture (1) includes a vertical body (10), the upper end of which is provided with a horizontal guide groove (101) with a side opening and a contoured slot (102) integrally connected to the end of the horizontal guide groove (101). The lower edge of the contoured slot (102) is lower than the height of the lower wall of the horizontal guide groove (101). The test box (2) includes a rectangular box (20) made of transparent plastic and which can be opened and sealed, and a top cover (21). Multiple quick-change fixtures (1) can be detachably connected to both longitudinal and / or transverse sides inside the box (20). The horizontal guide grooves (101) of the quick-change fixtures (1) on both longitudinal sides face the same direction, and the horizontal guide grooves (101) of the quick-change fixtures (1) on both transverse sides face the same direction. The multi-cavity carrier (3) includes a three-dimensional rectangular frame (30), and the frame (30) is divided into multiple product cavities in a rectangular array by a horizontal plate frame (31). The vertical section of the lower connecting rod (302) of the frame (30) is fitted with the vertical section of the contoured slot (102). The multi-cavity carrier (3) is placed into the box (20). The longitudinal and transverse lower connecting rods (302) are located on the open side of the longitudinal and transverse horizontal guide grooves (101), respectively. The lower connecting rods (302) are pushed in sequence through the horizontal guide grooves (101) and slid into the corresponding contour slots (102) to quickly replace the multi-cavity carrier (3).

2. The anti-vacuum testing chamber according to claim 1, characterized in that, A vertical end block (13) is provided on one side of the upper end of the vertical body (10). The upper end of the vertical end block (13) is integrally vertically connected to the horizontal limiting plate (11) and the lower end is integrally vertically connected to the horizontal guide wall (12). The limiting plate (11) and the guide wall (12) surround and form a horizontal guide groove (101) with a side opening. A contoured slot (102) is provided below the end of the limiting plate (11).

3. The anti-vacuum testing chamber according to claim 2, characterized in that, The lower connecting rod (302) is a round rod, and the contoured slot (102) is an arc groove.

4. The anti-vacuum testing chamber according to claim 2, characterized in that, The length of the limiting plate (11) is shorter than the length of the guide wall (12). The opening sides of the limiting plate (11) and the guide wall (12) also form a vertical entrance and a horizontal temporary storage surface. The lower connecting rod (302) enters the horizontal temporary storage surface from the vertical entrance.

5. The anti-vacuum testing chamber according to claim 4, characterized in that, The lower wall port of the limiting plate (11) also has a chamfered guide surface (111).

6. The anti-vacuum testing chamber according to any one of claims 2 to 5, characterized in that, The vertical body (10) is rectangular. The lower end of the vertical body (10) extends outward horizontally to form a connecting foot (14). The connecting foot (14) is provided with multiple stepped through holes (141). A cylindrical head screw passes through the stepped through holes (141) and is threaded to the first threaded blind hole (200) on the lower wall of the box body (20).

7. The anti-vacuum testing chamber according to claim 6, characterized in that, The housing (20) is provided with two rows of parallel quick-change fixtures (1), and the spacing between adjacent quick-change fixtures (1) in each row is the same.

8. The anti-vacuum testing chamber according to claim 7, characterized in that, The upper wall of the guide wall (12) is also provided with a number of axially spaced limiting holes (121). Each limiting hole (121) has a receiving cavity (122) at its lower end. A number of limiting balls (4) are vertically floating in the receiving cavity (122) and their upper spherical surfaces protrude from the limiting hole (121).

9. The anti-vacuum testing chamber according to claim 8, characterized in that, The receiving cavity (122) is a vertical shaft hole with a screw hole at the end, and the wall of the limiting hole (121) is spherical; The vertical shaft hole end is threaded to a countersunk threaded part (5), and a vertical elastic part (6) is provided between the countersunk threaded part (5) and the limiting ball (4); The countersunk threaded part (5) is a cylindrical head screw, and the limiting ball (4) is a vertical spring or a rubber column.

10. The anti-vacuum testing chamber according to claim 6, characterized in that, The frame (30) includes four vertical columns (301), and the upper and lower ends of the vertical columns (301) are respectively vertically connected to the four corners of two horizontal frame (31) to form a three-dimensional rectangular structure. The horizontal frame (31) includes vertically connected longitudinal connecting rods (311) and transverse connecting rods (312), and the lowest longitudinal connecting rods (311) and transverse connecting rods (312) form the lower connecting rods (302) of the skeleton (30); The horizontal sheet frame (31) is also provided with several intermediate connecting rods (313) at equal intervals, and multiple vertical connecting rods (32) are provided between the intermediate connecting rods (313) to form multiple product cavities.

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