Fixing tool of box airtightness testing machine

Abstract

The utility model discloses a fixing tool of a box airtightness testing machine, which is characterized in that according to the size of a box, a placing plate with a corresponding size is mounted on a table top for placing the box, and a sealing pressing plate with a corresponding size is mounted on a lifting plate. And according to the size of the placement plate, the mounting positions of the two second mounting parts on the table board are adjusted in the first horizontal direction. The box body is placed on the placing plate, and the side face with air holes of the box body faces the two air cylinders of the first set. According to the specific positions of the air holes, one air cylinder is selected from the two air cylinders of the first group to be connected with the air pump, and the mounting positions of the two second mounting parts on the table top are adjusted in the second horizontal direction, so that one air cylinder in the second group is aligned with the air cylinder connected with the air pump in the first group. The size of the box body on the placing plate is finely adjusted, so that the air holes are aligned with the selected cylinders. The hydraulic cylinder drives the sealing pressing plate to move downwards to press and cover the box body, piston rods of the two sets of air cylinders stretch out and abut against the two side faces of the box body respectively, and the air cylinders connected with the air pump are communicated with the air holes.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtight testing machine, especially a kind of fixed tool of box airtight testing machine. BACKGROUND

[0002] Box is generally tested by airtight testing machine in airtightness test, and the airtight testing machine generally includes a fixed tool and a negative pressure airtight tester. The opening of the box is pressed by a pressing plate to achieve sealing. The air hole left on the side of the box is connected to an air pump, and the negative pressure airtight tester measures the air pressure inside the box. After setting the test pressure and pressure holding time, the test pressure is reached after a period of air extraction, and the pressure holding time is entered. According to the comparison between the pressure after the pressure holding time and the test pressure, it is determined whether the airtightness of the box is qualified. At present, the fixed tool of the box airtight testing machine generally includes a placement plate for placing the box, a pressing plate for pressing the opening of the box, and a hydraulic cylinder for driving the pressing plate to move up and down. The function is relatively single, and the connection between the air pump and the box is not convenient. SUMMARY

[0003] The present application provides a kind of fixed tool of box airtight testing machine, can solve the problem proposed in background art.

[0004] In the present application, a kind of fixed tool of box airtight testing machine is provided, comprising:

[0005] The equipment frame has a table top, a first mounting portion above the table top;

[0006] The placement plate is detachably mounted on the table top;

[0007] The lifting plate is connected to the first mounting portion in a sliding manner;

[0008] The hydraulic cylinder is used to drive the lifting plate to slide;

[0009] The sealing pressing plate is detachably mounted on the lifting plate;

[0010] The two second mounting portions are both mounted on the table top, and are respectively located on the opposite sides of the placement plate in the first horizontal direction. They can also be adjusted in the installation position of the table top along the first horizontal direction and the second horizontal direction perpendicular to the first horizontal direction.

[0011] The two groups of air cylinders, one group has two air cylinders, and the two groups are respectively installed on the two second mounting portions. The telescopic rods of the first group of two air cylinders each have a stop block and an air path for communicating with the box.

[0012] In some embodiments, the first group of two air cylinders and the second group of two air cylinders correspond to each other in the first direction. One air cylinder in each of the two groups of air cylinders corresponds to the center of the placement plate. The telescopic rods of the second group of two air cylinders also each have a stop block and an air path for communicating with the box.

[0013] In some embodiments, the table top of the equipment rack is arranged with a plurality of hole positions for connecting the placement plate and the two second mounting portions.

[0014] In some embodiments, the two groups of air cylinders are double-acting air cylinders; the piston rods are hollow, and the air path penetrates through both ends of the piston rod.

[0015] In some embodiments, further comprising: a group of safety gratings installed on the equipment rack and connected to the hydraulic cylinders.

[0016] In summary, in the present application, a fixing tool for a box airtight test machine is provided. According to the size of the box, a placement plate of corresponding size is installed on the table top for placing the box, and a sealing press plate of corresponding size is installed on the lifting plate. According to the size of the placement plate, the installation positions of the two second mounting portions on the table top are adjusted along the first horizontal direction, so that the two second mounting portions are relatively close to the table top. The box is placed on the placement plate, and the side with air holes of the box faces the first group of two air cylinders. According to the specific position of the air holes, one air cylinder is selected from the first group of two air cylinders to be connected to the air pump, and the installation positions of the two second mounting portions on the table top are adjusted along the second horizontal direction, so that one air cylinder in the second group is aligned with the air cylinder connected to the air pump in the first group. The size of the box on the placement plate is fine-tuned so that the air holes are aligned with the selected air cylinder. The hydraulic cylinder drives the sealing press plate to move downward and tightly cover the box, the piston rods of the two groups of air cylinders are extended and respectively abut against the two side surfaces of the box, and the air cylinder connected to the air pump is in communication with the air holes. The fixing tool has the beneficial effects of simple structure, convenient use, stable fixation of the box, and good airtightness. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to better clarify the technical solutions in the embodiments of the present application or the background art, the drawings required to be used in the embodiments of the present application or the background art will be described below.

[0018] Figure 1 is a schematic diagram of the present application;

[0019] Figure 2 is Figure 1 is an enlarged schematic diagram of part A;

[0020] Figure 3 is a front view of the present application;

[0021] Figure 4 is Figure 3 is a sectional view along A-A;

[0022] Figure 5 is a schematic diagram of the hole positions for installing the placement plate and the second mounting portion on the table top;

[0023] Figure 6The diagram is for two groups of cylinders corresponding to each other;

[0024] Figure 7 The diagram is for two groups of cylinders using double-acting cylinders.

[0025] In the diagram,

[0026] 1, equipment rack; 1a, table top; 1a1, hole position; 1b, first mounting part;

[0027] 2, placement plate;

[0028] 3, lifting plate;

[0029] 4, hydraulic cylinder;

[0030] 5, sealing pressure plate;

[0031] 6, second mounting part;

[0032] 7, cylinder; 7a, abutting block; 7b, gas path;

[0033] 8, safety grating. Specific embodiments

[0034] Further description is made below in combination with the drawings, which are only examples and not strictly drawn to scale. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood as the general meaning understood by those skilled in the art to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly. The embodiments in the present application can be combined with each other without conflict.

[0035] Please refer to Figure 1 and Figure 3 A fixed tool of a box airtight test machine, comprising an equipment rack 1, a placement plate 2, a lifting plate 3, a hydraulic cylinder 4, a sealing pressure plate 5, two second mounting parts 6 and two groups of cylinders 7.

[0036] The equipment rack 1 has a table top 1a and a first mounting part 1b, and the first mounting part 1b is directly above the table top 1a. More specifically, four support columns can be provided between the first mounting part 1b and the table top 1a.

[0037] The placing plate 2 is detachably mounted on the table top 1a. More specifically, the placing plate 2 and the table top 1a can be mounted by using bolts.

[0038] The lifting plate 3 is slidingly connected to the first mounting part 1b. More specifically, the top surface of the lifting plate 3 can be fixedly connected with four optical shafts, and the first mounting part 1b is fixedly connected with linear bearings matched with the optical shafts.

[0039] The hydraulic cylinder 4 is used to drive the lifting plate 3 to slide. More specifically, the cylinder body of the hydraulic cylinder 4 is fixedly connected to the first mounting part 1b, the piston rod penetrates through the first mounting part 1b, and is fixedly connected to the lifting plate 3.

[0040] The sealing pressing plate 5 is detachably mounted on the lifting plate 3. More specifically, the sealing pressing plate 5 and the lifting plate 3 can be mounted by using bolts.

[0041] Please refer to Figure 1 and Figure 2 , the two second mounting parts 6 are both mounted on the table top 1a, and are respectively located on the opposite sides of the placing plate 2 in the first horizontal direction. The two second mounting parts 6 can also be adjusted in the installation position of the table top 1a along the first horizontal direction and the second horizontal direction perpendicular to the first horizontal direction. More specifically, the second mounting part 6 and the table top 1a can be mounted by using bolts.

[0042] The two groups of air cylinders 7 are respectively mounted on the two second mounting parts 6, and are marked as a first group and a second group. The number of air cylinders 7 in one group is two. The telescopic rods of the two air cylinders 7 in the first group are both provided with abutting blocks 7a and air paths 7b for communication with the box body. More specifically, the piston rod is further fixedly connected with a mounting disc, the abutting block 7a is annular and is adhesively fixed to the mounting disc; one end of the mounting disc is provided with a first connecting section screw-connected to the air path 7b, and the other end is provided with a second connecting section inserted into the abutting block 7a.

[0043] In some embodiments, the first type of arrangement of the air path 7b can be that the end of the piston rod is provided with a blind hole, and a gas pipe insertion port is screw-connected to the rod wall and communicates with the blind hole, so as to form the air path 7b.

[0044] In some embodiments, the second type of arrangement of the air path 7b can be that the two air cylinders 7 in the first group are both double-acting air cylinders 7; the piston rod is hollow, and the air path 7b penetrates through both ends of the piston rod.

[0045] Please refer to 4 and Figure 5 In some embodiments, the table top 1a of the equipment rack 1 is arranged with a plurality of hole positions 1a1, and these hole positions 1a1 are used for connecting the placing plate 2 and the two second mounting parts 6. That is, these hole positions 1a1 are all threaded holes matched with bolts.

[0046] According to the size of the box, a corresponding size of the placement plate 2 is installed on the table 1a for the box to be placed. According to the size of the placement plate 2, the installation position of the two second mounting parts 6 in the first horizontal direction on the table 1a is adjusted so that the two second mounting parts 6 are relatively close to the table 1a. The box is placed on the placement plate 2, and the side with the air hole of the box faces the first group of two air cylinders 7. According to the specific position of the air hole, one air cylinder 7 is selected from the first group of two air cylinders 7 to be connected to the air pump, and the installation position of the two second mounting parts 6 in the second horizontal direction on the table 1a is adjusted so that one air cylinder 7 in the second group is aligned with the air cylinder 7 in the first group connected to the air pump. The size of the box on the placement plate 2 is fine-tuned so that the air hole is aligned with the selected air cylinder 7. The hydraulic cylinder 4 drives the sealing press plate 5 to move downward, tightly covers the box, and the piston rods of the two groups of air cylinders 7 are extended and respectively abut against the two sides of the box. The air cylinder 7 connected to the air pump is in communication with the air hole.

[0047] Please refer to Figure 6 In some embodiments, the first group of two air cylinders 7 and the second group of two air cylinders 7 correspond to each other in the first direction, and each of the two groups of air cylinders 7 has one air cylinder 7 corresponding to the center of the placement plate 2. The extension rods of the two groups of air cylinders 7 also have abutting blocks 7a and air paths 7b for communication with the box. That is, relative to the placement plate 2, the two groups of air cylinders 7 are both biased to the first side.

[0048] In this way, when the box is placed on the placement plate 2, if the air hole is on the second side relative to the placement plate 2, the installation position of the two second mounting parts 6 in the second horizontal direction on the table 1a does not need to be adjusted, but the box is rotated by 180 degrees so that the air hole corresponds to the second group of air cylinders 7. One air cylinder 7 is selected from the second group of two air cylinders 7 to be connected to the air pump, and the size of the box on the placement plate 2 is fine-tuned so that the air hole is aligned with the selected air cylinder 7.

[0049] Please refer to Figure 7 In some embodiments based on the above-mentioned embodiment that “the first group of two air cylinders 7 and the second group of two air cylinders 7 correspond to each other in the first direction, and each of the two groups of air cylinders 7 has one air cylinder 7 corresponding to the center of the placement plate 2”, the air paths 7b of the two groups of air cylinders 7 are both selected to be the second type, that is, the two groups of air cylinders 7 are both double-acting air cylinders 7.

[0050] In this way, it is more convenient to disassemble and connect the air pump and the air paths 7b of different air cylinders 7.

[0051] Please refer to Figure 5In some embodiments, the fixed tooling of the box airtight testing machine further comprises a set of safety grating 8. The set of safety grating 8 is installed on the equipment rack 1 and connected to the hydraulic cylinder 4. That is, a three-position four-way electromagnetic reversing valve is used in the hydraulic oil circuit to control the upward movement, downward movement or stationary of the hydraulic cylinder 4, and the safety grating 8 is connected to the control circuit of the electromagnetic reversing valve. When the hand is inserted, the safety grating 8 is triggered, the corresponding electromagnet in the electromagnetic valve remains open, and the electromagnetic valve cannot reach the position to move the hydraulic cylinder 4 downward.

Claims

1. A fixture for a box airtightness tester, the fixture comprising: The utility model relates to a kind of equipment rack, comprising: Equipment rack (1) has table top (1a), first installation part (1b) is in the table top (1a) directly above; Placement plate (2) is detachably installed in the table top (1a); Lifting plate (3) is connected to the first installation part (1b) in up-down sliding mode; Hydraulic cylinder (4) is used to drive the lifting plate (3) to slide; Sealing presser plate (5) is detachably installed in the lifting plate (3); Two second installation parts (6) are installed in the table top (1a);Respectively in the first horizontal direction opposite two sides of the placement plate (2);It can also be adjusted in the installation position of the table top (1a) along the first horizontal direction, the second horizontal direction perpendicular to the first horizontal direction; Two groups of air cylinders (7), one group is two, two groups are installed in two second installation parts (6) respectively;The telescopic rod of the first group two air cylinders (7) has stop block (7a) and gas path (7b) for being communicated with box.

2. The fixing tool of the box airtightness testing machine according to claim 1, characterized in that, The first group two air cylinders (7) and the second group two air cylinders (7) are in the first direction one-to-one;Two groups of air cylinders (7) also have a cylinder (7) corresponding to the center of the placement plate (2);The telescopic rod of the second group two air cylinders (7) also has stop block (7a) and gas path (7b) for being communicated with box.

3. The fixture of claim 1, wherein, The table top (1a) of the equipment rack (1) is arranged with a plurality of hole positions (1a1), and the hole positions (1a1) are used for connecting the placement plate (2) and two second installation parts (6).

4. The fixture of claim 2, wherein, Two groups of air cylinders (7) are double-acting air cylinders (7);Piston rod is hollow, and gas path (7b) penetrates both ends of piston rod.

5. The fixture of claim 1, wherein, Further comprising: A group of safety grating (8) is installed in the equipment rack (1), and is connected with the hydraulic cylinder (4).

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