Air tightness detection equipment for multi-pipe structure

Abstract

The utility model discloses air tightness detection equipment for a multi-pipe structure, which relates to the technical field of detection equipment and comprises a rack and an air pipe butt joint mechanism arranged on the rack, the air pipe butt joint mechanism is used for connecting and inflating workpieces, and the air tightness detection equipment further comprises a height limiting mechanism arranged on the rack. The height limiting mechanism comprises a top plate, a bottom plate, a lower pressing plate, a height limiting block, a first air cylinder and a plurality of vertical rods, the bottom plate is fixed to the rack, the vertical rods are connected between the top plate and the bottom plate, the lower pressing plate is connected to the vertical rods in a sleeving mode, the first air cylinder is fixed to the top plate, and an output shaft of the first air cylinder penetrates through the top plate to be connected with the lower pressing plate; the height limiting block is detachably connected to the periphery of the bottom plate; after a workpiece is inflated to a certain height, the lower pressing plate has a height and volume limiting effect on the workpiece, the workpiece is prevented from cracking due to excessive deformation, and meanwhile, the pressure intensity of the workpiece can be increased to enable inflation equipment to automatically cut off inflation.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to an air tightness detection equipment for a multi-tube structure. Background Art

[0002] During the production process, products usually need to be tested for air tightness.

[0003] In the detection work of the existing air tightness detection equipment, a pressure measuring device is used to detect the pressure value inside the object to be tested to control when to stop inflation. For example, Patent No. 201911325971.2 is an oil pillow air tightness detection device and detection method, which discloses a fixing device, an air source device and a pressure measuring device; the fixing device includes a base, a top plate and a telescopic rod, the movable section and the fixed section of the telescopic rod are respectively connected to the base and the top plate, and the distance between the base and the top plate is equal to the telescopic length of the oil pillow; the air source device is connected to the air inlet of the oil pillow through an inflation pipeline, which is used to supply air to pressurize the oil pillow, so as to ensure that the two ends of the oil pillow are always pressed against the base and the top plate when inflation is completed; the pressure measuring device is connected to the air inlet of the oil pillow through a detection pipeline, which is used to detect the gas pressure value in the oil pillow, so as to stop inflation when the pressure value of the gas is greater than or equal to a first set value. The above-mentioned method of controlling when to stop inflation by means of a pressure measuring device still uses electronic equipment to avoid over-inflation. However, electronic equipment is always prone to failure, and failure is not easy to be detected. Therefore, the degree of protection of using a pressure measuring device to prevent over-inflation is not high. Utility Model Content

[0004] The utility model discloses an air tightness detection device for a multi-tube structure, which solves the technical problem of low security in preventing over-inflation.

[0005] In order to solve the above technical problems, the utility model proposes the following optimization technical solutions:

[0006] An air tightness detection device for a multi-tube structure, comprising a frame and an air pipe docking mechanism arranged on the frame, the air pipe docking mechanism is used to connect and inflate workpieces, and the utility model also includes a height limiting mechanism, the height limiting mechanism is arranged on the frame;

[0007] The height limiting mechanism includes a top plate, a bottom plate, a lower pressure plate, a height limiting block, a first cylinder and a plurality of vertical rods. The bottom plate is fixed on the frame, a plurality of vertical rods are connected between the top plate and the bottom plate, the lower pressure plate is sleeved on the vertical rods, the first cylinder is fixed on the top plate, the output shaft of the first cylinder passes through the top plate and is connected to the lower pressure plate, and the height limiting block is detachably connected to the edge of the bottom plate.

[0008] Furthermore, the height limiting block is provided with a first through hole from top to bottom, the edge of the bottom plate is provided with a second through hole, and the height limiting block is installed on the bottom plate by inserting a limiting strip into the first through hole and the second through hole.

[0009] Further, the trachea docking mechanism comprises a trachea fixing seat, an air intake seat and a second air cylinder;

[0010] The trachea fixing seat is provided with a trachea clamping seat, which is fixed on the frame and located on one side of the top plate. The top surface of the trachea clamping seat is provided with a plurality of clamping strips with even intervals, and the clamping strips protrude from the top surface of the trachea clamping seat, and a clamping position is formed between two adjacent clamping strips;

[0011] The second cylinder is fixed on the frame, the output shaft of the second cylinder is connected to the air intake seat, the air intake seat is provided with an air intake nozzle and an air delivery nozzle, and the air delivery nozzle is connected to the inflation device through an air pipe;

[0012] When the air pipe of the workpiece is fixed on the clamping position, the second air cylinder drives the air inlet seat to move and enables the air inlet nozzle to connect with the air pipe of the workpiece.

[0013] Furthermore, the number of the air delivery nozzles, the number of the clamping positions, and the number of the air inlet nozzles are all consistent.

[0014] Furthermore, the trachea fixing seat is provided with a plurality of rows of clamping pins, and each row of the clamping pins is arranged in a row with each of the clamping strips.

[0015] Furthermore, a controller is included, and the first cylinder and the second cylinder are electrically connected to the controller.

[0016] Furthermore, the air inlet nozzle is provided with a sensor, and the sensor is electrically connected to the controller.

[0017] Furthermore, the trachea docking mechanism also includes a pressing assembly, which includes a third cylinder, an auxiliary seat and a pressing strip, the third cylinder is fixed on the frame, the third cylinder is electrically connected to the controller, the auxiliary seat is fixedly connected to the trachea fixing seat, the output shaft of the third cylinder is rotatably connected to the first end of the pressing strip through a connecting rod, the first end of the pressing strip is rotatably connected to the auxiliary seat, and the pressing strip is located above the card pin.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The air tightness detection equipment disclosed by the utility model is provided with a height limiting mechanism. When the air pipe of the workpiece is connected to the air pipe docking mechanism, the workpiece is placed on the bottom plate, and the first cylinder in the height limiting mechanism drives the lower pressure plate to descend to a certain height. The air pipe docking mechanism then inflates the workpiece with a preset inflation volume (the inflation volume, inflation pressure, and inflation time can be freely set). After the workpiece is inflated to a certain height, the lower pressure plate has a height volume limiting effect on the workpiece to prevent the workpiece from being deformed too much and cracking, and at the same time can increase the pressure of the workpiece to automatically disconnect the inflation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall structural schematic diagram of the utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the trachea docking mechanism of the utility model. Figure 1 .

[0022] Figure 3 This is a schematic diagram of the structure of the trachea docking mechanism of the utility model. Figure 2 .

[0023] Figure 4 It is a structural schematic diagram of the height limiting mechanism of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the connection between the air intake seat and the air pipe fixing seat of the utility model.

[0025] Figure 6 It is a structural schematic diagram of the trachea fixing seat of the utility model.

[0026] In the figure: 100, frame; 200, trachea docking mechanism; 210, trachea fixing seat; 211, trachea clamping seat; 212, clamping strip; 213, clamping position; 214, clamping needle; 220, air inlet seat; 221, air inlet nozzle; 222, air delivery nozzle; 230, second cylinder; 240, third cylinder; 250, auxiliary seat; 260, pressing strip; 270, connecting rod; 300, height limiting mechanism; 310, top plate; 320, bottom plate; 330, lower pressure plate; 340, height limiting block; 341, first through hole; 350, first cylinder; 360, vertical pole; 400, controller. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] See also Figure 1-Figure 6 , an air tightness detection device for a multi-tube structure, comprising a frame 100 and an air pipe docking mechanism 200 arranged on the frame 100, wherein the air pipe docking mechanism 200 is used to connect and inflate a workpiece. It should be noted that the workpiece is inflated with an existing conventional inflating device, which has a function of presetting the inflating volume and an automatic inflating cut-off function when the pressure is too high.

[0029] The utility model further includes a height limiting mechanism 300, which is arranged on the frame 100; the height limiting mechanism 300 includes a top plate 310, a bottom plate 320, a lower pressure plate 330, a height limiting block 340, a first cylinder 350 and a plurality of vertical rods 360, the bottom plate 320 is fixed on the frame 100, a plurality of vertical rods 360 are connected between the top plate 310 and the bottom plate 320, the lower pressure plate 330 is sleeved on the vertical rods 360, The first cylinder 350 is fixed on the top plate 310, and the output shaft of the first cylinder 350 passes through the top plate 310 to connect to the lower pressure plate 330. The height limiting block 340 is detachably connected to the edge of the bottom plate 320. The height limiting block 340 serves to limit the descending height of the lower pressure plate 330. Since the height limiting block 340 is detachably connected to the bottom plate 320, the height limiting blocks 340 of different heights can be replaced, thereby limiting the different descending heights of the lower pressure block. After the air pipe of the workpiece is connected to the air pipe docking mechanism 200, the workpiece is placed on the base plate 320, and the first cylinder 350 drives the lower pressure plate 330 to descend to a certain height. Then the air pipe docking mechanism 200 inflates the workpiece. During the inflation process, the workpiece will press against the lower pressure plate 330. The lower pressure plate 330 has a height volume limiting effect on the workpiece to prevent the workpiece from being deformed too much and cracking. At the same time, it can increase the pressure of the workpiece and make the inflation equipment automatically disconnect the inflation. It can provide both mechanical protection and electronic control protection. The superposition of the two protection types provides better inflation protection for the workpiece.

[0030] In addition, there are four vertical rods 360 , which are arranged at four corners; there are two first cylinders 350 , which can control the movement of the lower pressing plate 330 to be more stable.

[0031] In this embodiment, the height limiting block 340 is provided with a first through hole 341 from top to bottom, and the side of the bottom plate 320 is provided with a second through hole. The height limiting block 340 is installed on the bottom plate 320 by inserting the limiting bar into the first through hole 341 and the second through hole, so that the height limiting block 340 is detachably installed on the bottom plate 320. When the limiting bar is pulled out from the first through hole 341 and the second through hole, the height limiting block 340 can be removed from the bottom plate 320, and then replaced with a height limiting block 340 of a different height, so that the descending height of the lower pressing plate 330 is adjustable.

[0032] In this embodiment, the trachea docking mechanism 200 includes a trachea fixing seat 210, an air inlet seat 220 and a second air cylinder 230;

[0033] The trachea fixing seat 210 is provided with a trachea clamping seat 211, which is fixed on the frame 100 and located on one side of the top plate 310. The top surface of the trachea clamping seat 211 is provided with a plurality of evenly spaced clamping strips 212, which protrude from the top surface of the trachea clamping seat 211, and a clamping position 213 is formed between two adjacent clamping strips 212;

[0034] The second cylinder 230 is fixed on the frame 100, and the output shaft of the second cylinder 230 is connected to the air intake seat 220. The air intake seat 220 is provided with an air intake nozzle 221 and an air delivery nozzle 222. The air delivery nozzle 222 is connected to the inflation device through an air pipe.

[0035] When the air pipe of the workpiece is fixed on the clamping position 213, the second air cylinder 230 drives the air inlet seat 220 to move and enables the air inlet nozzle 221 to connect with the air pipe of the workpiece.

[0036] In the above technical solution, the air pipe port of the workpiece is fixed in the locking position 213, and then the second cylinder 230 is started to move the air inlet seat 220 close to the air pipe fixing seat 210, so that the air inlet nozzle 221 is connected to the air pipe port of the workpiece, and the inflation device supplies air to the workpiece through the air supply nozzle 222 and the air inlet nozzle 221; the air pipe connection method of the workpiece is simple and convenient.

[0037] In this embodiment, the number of the gas delivery nozzles 222, the number of the clamping positions 213, and the number of the gas inlet nozzles 221 are all consistent, that is, the gas inlet nozzles 221 are connected to the workpiece air pipe ports fixed in the clamping positions 213 one by one, and each gas delivery nozzle 222 is independently connected to an air charging device, and each air inlet nozzle 221 supplies air independently. In detail, the number of the gas delivery nozzles 222, the number of the clamping positions 213, and the number of the gas inlet nozzles 221 are all six. When the number of air pipes of the workpiece is less than six, the air charging device corresponding to the gas inlet nozzle 221 that is not connected to the workpiece air pipe is not started, so that the detection device is convenient for detecting different numbers of air pipes.

[0038] In this embodiment, the air pipe fixing seat 210 is provided with multiple rows of clamping pins 214, and each row of clamping pins 214 is arranged in a row with each clamping strip 212. When the air pipe end of the workpiece is fixed on the clamping position 213, the air pipe is clamped between the clamping pins 214, and the clamping pins 214 have a fixing effect on the air pipe.

[0039] In this embodiment, a controller 400 is further included. The first cylinder 350 and the second cylinder 230 are both electrically connected to the controller 400. The controller 400 intelligently controls the opening and closing of the first cylinder 350 and the second cylinder 230.

[0040] In this embodiment, the air inlet nozzle 221 is provided with a sensor, which is electrically connected to the controller 400. The sensor is used to sense whether the air inlet nozzle 221 is connected to an air pipe, so that the controller 400 controls the inflation device corresponding to the air inlet nozzle 221 not connected to the air pipe not to be opened.

[0041] In this embodiment, the trachea docking mechanism 200 further includes a pressing assembly, which includes a third cylinder 240, an auxiliary seat 250 and a pressing bar 260. The third cylinder 240 is fixed on the frame 100, the third cylinder 240 is electrically connected to the controller 400, the auxiliary seat 250 is fixedly connected to the trachea fixing seat 210, the output shaft of the third cylinder 240 is rotatably connected to the first end of the pressing bar 260 through a connecting rod 270, the first end of the pressing bar 260 is rotatably connected to the auxiliary seat 250, and the pressing bar 260 is located above the clamping pin 214. When the third cylinder 240 is started, the output shaft of the third cylinder 240 extends upward, one end of the pressing bar 260 rotates, and the other end presses down the trachea of ​​the workpiece, thereby further fixing the workpiece.

[0042] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. An air tightness detection device for a multi-tube structure, comprising a frame and an air pipe docking mechanism arranged on the frame, wherein the air pipe docking mechanism is used to connect and inflate workpieces, characterized in that: It also includes a height limiting mechanism, which is arranged on the frame; The height limiting mechanism includes a top plate, a bottom plate, a lower pressure plate, a height limiting block, a first cylinder and a plurality of vertical rods. The bottom plate is fixed on the frame, a plurality of vertical rods are connected between the top plate and the bottom plate, the lower pressure plate is sleeved on the vertical rods, the first cylinder is fixed on the top plate, the output shaft of the first cylinder passes through the top plate and is connected to the lower pressure plate, and the height limiting block is detachably connected to the edge of the bottom plate.

2. The air tightness detection device for a multi-tube structure according to claim 1, characterized in that: The height limiting block is provided with a first through hole from top to bottom, the edge of the bottom plate is provided with a second through hole, and the height limiting block is installed on the bottom plate by inserting a limiting strip into the first through hole and the second through hole.

3. The air tightness detection device for a multi-tube structure according to claim 1, characterized in that: The trachea docking mechanism comprises a trachea fixing seat, an air intake seat and a second air cylinder; The trachea fixing seat is provided with a trachea clamping seat, which is fixed on the frame and located on one side of the top plate. The top surface of the trachea clamping seat is provided with a plurality of clamping strips with even intervals, and the clamping strips protrude from the top surface of the trachea clamping seat, and a clamping position is formed between two adjacent clamping strips; The second cylinder is fixed on the frame, the output shaft of the second cylinder is connected to the air intake seat, the air intake seat is provided with an air intake nozzle and an air delivery nozzle, and the air delivery nozzle is connected to the inflation device through an air pipe; When the air pipe of the workpiece is fixed on the clamping position, the second air cylinder drives the air inlet seat to move and enables the air inlet nozzle to connect with the air pipe of the workpiece.

4. The air tightness detection device for a multi-tube structure according to claim 3, characterized in that: The number of the air delivery nozzles, the number of the clamping positions, and the number of the air inlet nozzles are all consistent.

5. The air tightness detection device for a multi-tube structure according to claim 3, characterized in that: The trachea fixing seat is provided with a plurality of rows of clamping pins, and each row of the clamping pins is arranged in a row with each of the clamping strips.

6. The air tightness detection device for a multi-tube structure according to claim 5, characterized in that: A controller is also included, and both the first cylinder and the second cylinder are electrically connected to the controller.

7. The air tightness detection device for a multi-tube structure according to claim 6, characterized in that: The air inlet nozzle is provided with a sensor, and the sensor is electrically connected to the controller.

8. The air tightness detection device for a multi-tube structure according to claim 6, characterized in that: The trachea docking mechanism also includes a pressing assembly, which includes a third cylinder, an auxiliary seat and a pressing strip, the third cylinder is fixed on the frame, the third cylinder is electrically connected to the controller, the auxiliary seat is fixedly connected to the trachea fixing seat, the output shaft of the third cylinder is rotatably connected to the first end of the pressing strip through a connecting rod, the first end of the pressing strip is rotatably connected to the auxiliary seat, and the pressing strip is located above the card pin.

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