Airtightness detection device for plastic bottle

Abstract

The application provides a plastic bottle airtightness detection device, and relates to the technical field of airtightness detection. The inside of the detection box is fixedly connected with a gas feeding box. The front side of the gas feeding box is fixedly connected with a gas cylinder. The top of the moving frame is fixedly provided with a connecting rod. The top of the connecting rod is fixedly provided with a rack. The blocking piece comprises a rotating shaft which is movably clamped in the inside of the air inlet and is fixedly provided with a gear on the rotating shaft. The rack is movably connected with the gear. After the moving frame is moved by the pushing of the gas cylinder, the position of the circular hole changes correspondingly, the air inlet is closed, the connecting rod moves synchronously with the moving frame, the rack at the top moves, the gear is driven to rotate, the rotating shaft rotates half a circle, the baffle is rotated synchronously by the rotating shaft, the baffle is sealed with the sealing ring after rotating half a circle, the air inlet is closed, the gas feeding or stopping can be realized at the position of the air inlet, and the problem that the opening and closing of the gas feeding port is difficult to realize is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air tightness detection, and particularly relates to a plastic bottle air tightness detection device. BACKGROUND

[0002] The plastic bottle is widely used in food packaging, product packaging and environmental decoration fields due to its light weight, low price and durability. In order to ensure the quality stability and safety of the packaged food during storage and transportation, the plastic bottle needs to be subjected to air tightness detection in the production process and before material packaging. The air tightness detection should be carried out after the hydraulic test is qualified. For the pressure vessel subjected to the design requirement of air pressure test, the air tightness test can be carried out simultaneously with the air pressure test, and the test pressure should be the pressure of the air pressure test. The gas used in the air tightness test should be dry, clean air, nitrogen or other inert gas.

[0003] However, the conventional plastic bottle air tightness detection is difficult to block the pipe port for conveying gas, and the gas remaining in the pipe is easy to affect the accuracy of the air pressure, and it is difficult to realize the opening and closing of the gas conveying port. When the plastic bottle is subjected to air tightness detection, the plastic bottle needs to be fixed and placed. The conventional fixing method by placing or clamping into the clamping groove cannot ensure the stability of the placement, and the plastic bottle is easy to be tilted after air pressure, which affects the detection result. SUMMARY

[0004] Therefore, the present application provides a plastic bottle air tightness detection device, which has a blocking piece to block the gas inlet, so as to realize the gas conveying or stopping at the gas inlet position.

[0005] The present application provides a plastic bottle air tightness detection device, which specifically comprises a detection box, an air conveying box fixedly connected inside the detection box, a gas inlet fixedly arranged at the top of the air conveying box, a gas cylinder fixedly connected to the front side of the air conveying box, a connecting plate fixedly connected to the front side of the air conveying box, mounting pieces fixedly connected to the inside of the air conveying box, a fixing frame sealingly connected to the bottom of the air conveying box through a flange, a push rod fixedly connected to the end of the movable frame inside the gas cylinder, a connecting rod fixedly arranged at the top of the movable frame and movably clamped in the air conveying box, a rack fixedly arranged at the top of the connecting rod, a blocking piece mounted inside the gas inlet, the blocking piece comprising a rotating shaft movably clamped in the gas inlet, a gear fixedly arranged on the rotating shaft and meshingly connected with the rack, a telescopic rod mounted at the bottom of the fixing frame, a clamping mechanism mounted at the bottom end of the telescopic rod, and the telescopic rod being electrically connected with an external circuit controller.

[0006] Optionally, the top surface of the top plate of the detection box is fixedly provided with a handle, the right side of the detection box is externally provided with a fixed nut, the fixed nut is fixedly connected to the air feeding box through a screw rod, and the top plate of the detection box is electrically and magnetically sealed to the top of the detection box through an external circuit controller.

[0007] Optionally, the left side of the air feeding box is fixedly connected with a mounting plate through a bolt assembly, the inside of the mounting plate is penetrated by a moving frame, the air inlet at the top of the air feeding box penetrates the top plate of the detection box, the mounting plate is fixedly connected to the connecting plate through the bolt assembly, and the connecting plate is fixedly connected to the cylinder body of the air cylinder through a connecting assembly.

[0008] Optionally, the moving frame is further provided with a circular hole, the diameter of the circular hole is equal to that of the air inlet, and the top surface of the connecting rod is fixedly and vertically provided with two groups of clamping plates.

[0009] Optionally, the mounting member is composed of a connecting plate and a slide, the connecting plate is fixedly connected to the inner side of the connecting plate through a bolt assembly, and the slide is fixedly connected to the inner side of the connecting plate, the inner side of the slide is provided with a groove, and the moving frame is slidably clamped in the groove.

[0010] Optionally, the blocking member further comprises a baffle and a sealing ring, the baffle is fixedly connected to the rotating shaft, and the sealing ring is fixedly connected to the inner wall of the air inlet.

[0011] Optionally, the clamping mechanism comprises a push rod, a sleeve, a clamping jaw and a placement disc, the top end of the push rod is fixedly connected to the bottom end of the telescopic rod, the push rod is movably clamped in the inside of the sleeve, the bottom of the sleeve is movably clamped in the inside of the clamping jaw through a shaft, and the clamping jaw is located above the placement disc.

[0012] Optionally, the bottom end of the push rod is fixedly provided with a connecting frame, the outer side of the connecting frame is movably clamped with a pull rod, the pull rod is movably clamped in the outer wall groove of the push rod, and the bottom end of the pull rod is movably connected to the clamping jaw through a shaft.

[0013] Beneficial effects

[0014] Compared with the traditional air tightness detection device, the position of the circular hole changes correspondingly after the moving frame is moved by the air cylinder, the air inlet is closed, the connecting rod moves synchronously with the moving frame, the rack at the top is moved, the gear is driven to rotate, the rotating shaft rotates half a circle, the baffle is synchronously driven to rotate by the rotating shaft, the baffle is sealed with the sealing ring after rotating half a circle, the air inlet is closed, and the air feeding or shutdown can be realized at the position of the air inlet.

[0015] In addition, when the telescopic rod moves downward to drive the push rod to move downward, the sleeve cannot continue to move downward after moving downward to the bottom surface inside the detection box, the push rod continues to move downward to drive the pull rod to move downward while the bottom end moves to the middle, and then the pawl is folded to the middle to clamp and fix the bottom of the plastic bottle to be detected, so as to avoid the plastic bottle from pouring after being pressurized by the air pressure and affecting the detection result.

[0016] In addition, when the moving frame moves to open and close the air inlet inside the air supply box, the rack and the clamping plate move synchronously, the clamping plate limits the gear to avoid rotation of the gear in the state that the air cylinder does not work, and self-locking is realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0018] The drawings in the following description only relate to some embodiments of the present application, and are not limited to the present application.

[0019] In the drawings:

[0020] Figure 1 A structure schematic view of the detection box according to the present application is shown;

[0021] Figure 2 A structure schematic view of the air supply box according to the present application is shown;

[0022] Figure 3 A front side view structure schematic view of the present application is shown; Figure 2

[0023] Figure 4 A cross-sectional structure schematic view of the air supply box according to the present application is shown;

[0024] Figure 5 A partial structure schematic view of the push rod and the sleeve according to the present application is shown;

[0025] Figure 6 An enlarged structure schematic view of the place A in the present application is shown; Figure 4

[0026] An enlarged structure schematic view of the place B in the present application is shown; Figure 7 Figure 5 An enlarged structure schematic view of the place C in the present application is shown.

[0027] Figure 8 Figure 4 A list of reference signs

[0028] A list of reference signs

[0029] ​​​1, Detection box; 101, Handle; 102, Fixed nut; 2, Gas sending box; 201, Air inlet; 202, Mounting plate; 203, Air cylinder; 3, Moving frame; 301, Connecting rod; 3011, Rack; 3012, Clamping plate; 302, Round hole; 4, Connecting plate; 5, Mounting piece; 51, Connecting plate; 52, Slide; 6, Barrier; 61, Shaft; 6101, Gear; 62, Baffle; 63, Sealing ring; 7, Fixed frame; 701, Telescopic rod; 8, Clamping mechanism; 81, Push rod; 8101, Connecting frame; 8102, Pull rod; 82, Sleeve; 83, Clamping jaw; 84, Placing disc. DETAILED DESCRIPTION

[0030] In order to make the purpose, scheme and advantages of the technical scheme of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings of specific embodiments of the present application. Unless otherwise specified, the terms used herein have the meanings commonly understood in the art. The same reference numerals in the drawings represent the same components.

[0031] Embodiment: Please refer to Figures 1 to 8 :

[0032] The present application provides a plastic bottle airtightness detection device, including detection box 1;The inside of detection box 1 is fixedly connected with gas sending box 2;The top of gas sending box 2 is fixedly provided with air inlet 201, the front side of gas sending box 2 is fixedly connected with air cylinder 203, the front side of gas sending box 2 is fixedly connected with connecting plate 4, the inside of gas sending box 2 is fixedly connected with mounting piece 5 on the front and back sides, and the bottom of gas sending box 2 is sealedly connected with fixed frame 7 through flange;The end of the push rod in the air cylinder 203 is fixedly connected with moving frame 3;The top of moving frame 3 is fixedly provided with connecting rod 301, and moving frame 3 is movably clamped in the inside of gas sending box 2;The top of connecting rod 301 is fixedly provided with rack 3011;Air inlet 201 is provided with barrier 6;Barrier 6 includes shaft 61, shaft 61 is movably clamped in the inside of air inlet 201, and shaft 61 is fixedly provided with gear 6101, gear 6101 is engagedly connected with rack 3011;The bottom of fixed frame 7 is provided with telescopic rod 701;The bottom end of telescopic rod 701 is provided with clamping mechanism 8, and telescopic rod 701 is electrically connected with external circuit controller.

[0033] In addition, as shown in the accompanying Figure 6 The barrier 6 also includes the baffle 62 and the sealing ring 63, the baffle 62 is fixedly connected on the shaft 61, the sealing ring 63 is fixedly connected on the inner wall of the air inlet 201, when the shaft 61 is driven to rotate by the rack 3011 and the gear 6101 meshing, the baffle 62 is rotated synchronously, the baffle 62 is sealed between the sealing ring 63 after rotating half a circle, the gear 6101 cannot rotate to realize self-locking due to the restriction of the clamping plate 3012, and the opening and closing of the air inlet 201 is realized.

[0034] In addition, as shown in the accompanying drawings Figure 2 and the accompanying drawings Figure 3 , the left side of the air supply box 2 is fixedly connected with the mounting plate 202 through the bolt assembly, the inside of the mounting plate 202 is penetrated by the moving frame 3, and the air inlet 201 at the top of the air supply box 2 penetrates the top plate of the detection box 1, and the mounting plate 202 is fixedly connected to the connecting plate 4 through the bolt assembly, and the connecting plate 4 is fixedly connected to the cylinder body of the air cylinder 203 through the connecting assembly, and the top plate of the detection box 1 can be rotated and opened with the air inlet 201 as the center after being opened by the handle 101 and will not fall off, the air inlet 201 provides an air filling channel for the inside of the air supply box 2, so that the air supply box 2 can detect the air tightness of the plastic bottle, and the connecting plate 4 provides a fixed basis for the installation of the air cylinder 203.

[0035] In addition, as shown in the accompanying drawings Figure 3 , the moving frame 3 is also provided with a circular hole 302, the diameter of the circular hole 302 is equal to the diameter of the air inlet 201, and the top surface of the connecting rod 301 is fixedly and vertically provided with two groups of clamping plates 3012, after the moving frame 3 is moved by the air cylinder 203, the position of the circular hole 302 changes accordingly, so that the air inlet 201 is unblocked or blocked, realizing the opening and closing function of the air supply box 2, when the connecting rod 301 moves synchronously with the moving frame 3, the top rack 3011 is driven to move, and then the gear 6101 is driven to rotate, so that the rotating shaft 61 rotates half a circle, the clamping plate 3012 limits the gear 6101, avoiding the rotation of the gear 6101 in the state that the air cylinder 203 does not work, realizing self-locking.

[0036] In addition, as shown in the accompanying drawings Figure 3 , the accompanying drawings Figure 4 and the accompanying drawings Figure 5 , the clamping mechanism 8 includes a push rod 81, a sleeve 82, a clamping jaw 83 and a placement disc 84, the top end of the push rod 81 is fixedly connected to the bottom end of the telescopic rod 701, the push rod 81 is movably clamped in the inside of the sleeve 82, the bottom of the sleeve 82 is movably clamped in the inside of the clamping jaw 83, and the clamping jaw 83 is located above the placement disc 84, when the telescopic rod 701 moves downward to drive the push rod 81 to move downward, the sleeve 82 is pushed to move downward to the bottom surface inside the detection box 1, the sleeve 82 cannot continue to move downward, and the push rod 81 continues to move downward to push the clamping jaw 83 to rotate inward, so as to clamp and fix the plastic bottle to be detected on the top surface of the placement disc 84.

[0037] In addition, as shown in the accompanying drawings Figure 7As shown, the bottom end of the push rod 81 is fixedly provided with a connecting frame 8101, the outer part of the connecting frame 8101 is movably clamped with a pull rod 8102, the pull rod 8102 is movably clamped in the outer wall groove of the push rod 81, and the bottom end of the pull rod 8102 is movably connected to the clamping jaw 83 through a shaft; when the clamping jaw 83 contacts the inner bottom surface of the detection box 1, the push rod 81 continues to move downward to push the pull rod 8102 to move downward while the bottom end moves to the middle, thereby pushing the clamping jaw 83 to fold to the middle, and clamping and fixing the bottom of the plastic bottle to be detected.

[0038] In addition, as shown in the accompanying drawings Figure 8 As shown, the mounting piece 5 is composed of a connecting plate 51 and a slide 52, the connecting plate 51 is fixedly connected to the inner side of the connecting plate 4 through a bolt assembly, and the slide 52 is fixedly connected to the inner side of the connecting plate 51; the inner side of the slide 52 is provided with a groove, the moving frame 3 is slidably clamped in the groove, and the mounting piece 5 provides the moving and clamping basis of the moving frame 3, so that the moving frame 3 can be directionally moved.

[0039] In addition, as shown in the accompanying drawings Figure 1 As shown, the top surface of the top plate of the detection box 1 is fixedly provided with a handle 101, and the right outer side of the detection box 1 is provided with a fixed nut 102; the fixed nut 102 is fixedly connected to the air sending box 2 in cooperation with a screw rod; the top plate of the detection box 1 is electrically controlled and magnetically sealed to the top of the detection box 1 through an external circuit controller, so that the inner part of the detection box 1 forms a closed space in cooperation with the top plate, so as to perform air tightness detection; and the handle 101 facilitates opening of the top plate after the top plate is de-magnetized through external circuit control.

[0040] The specific use mode and effect of the embodiment are as follows: in the present application, when the telescopic rod 701 moves downward to drive the push rod 81 to move downward, the sleeve 82 cannot continue to move downward after the sleeve 82 moves downward to the inner bottom surface of the detection box 1; the push rod 81 continues to move downward to push the pull rod 8102 to move downward while the bottom end moves to the middle, thereby pushing the clamping jaw 83 to fold to the middle, and clamping and fixing the bottom of the plastic bottle to be detected;

[0041] After the moving frame 3 is moved by the air cylinder 203, the position of the circular hole 302 changes correspondingly, so that the air inlet 201 is closed; after the connecting rod 301 moves synchronously with the moving frame 3, the top rack 3011 is driven to move, thereby driving the gear 6101 to rotate, so that the rotating shaft 61 rotates half a circle; the rotating shaft 61 synchronously drives the baffle 62 to rotate, and the baffle 62 is sealed with the sealing ring 63 after rotating half a circle, so as to realize the sealing of the air inlet 201; the clamping plate 3012 plays a limiting role on the gear 6101, so as to avoid the rotation of the gear 6101 in the state that the air cylinder 203 does not work, and realize self-locking; the air inlet 201 provides an inflation channel for the inside of the air sending box 2, so that the air sending box 2 can perform air tightness detection on the plastic bottle.

Claims

1. A device for detecting the airtightness of plastic bottles, characterized in that, Includes a testing box (1); an air supply box (2) is fixedly connected inside the testing box (1); an air inlet (201) is fixedly provided on the top of the air supply box (2), a cylinder (203) is fixedly connected to the front side of the air supply box (2), a connecting plate (4) is fixedly connected to the front side of the air supply box (2), mounting parts (5) are fixedly connected to the front and rear sides inside the air supply box (2), and a fixing bracket (7) is sealed to the bottom of the air supply box (2) through a flange; the cylinder (203) The push rod inside the air inlet (201) is fixedly connected to a movable frame (3); a connecting rod (301) is fixedly installed on the top of the movable frame (3), and the movable frame (3) is movably engaged inside the air supply box (2); a rack (3011) is fixedly installed on the top of the connecting rod (301); a baffle (6) is installed inside the air inlet (201); the baffle (6) includes a rotating shaft (61), which is movably engaged inside the air inlet (201), and the rotating shaft (61) is movably engaged inside the air inlet (201), and the rotating shaft (61) is movably engaged inside the air inlet (201), and the rotating shaft (61) is movably engaged inside the air supply box (2). A gear (6101) is fixedly mounted on the shaft (61), and the gear (6101) meshes with the rack (3011); a telescopic rod (701) is installed at the bottom of the fixed frame (7); a clamping mechanism (8) is installed at the bottom end of the telescopic rod (701), and the telescopic rod (701) is electrically connected to an external circuit controller; a mounting plate (202) is fixedly connected to the left side of the air supply box (2) by a bolt assembly, and the interior of the mounting plate (202) is made of a movable frame ( 3) The air inlet (201) at the top of the air supply box (2) penetrates the top plate of the detection box (1). The mounting plate (202) is fixedly connected to the connecting plate (4) by bolt assembly. The connecting plate (4) is fixedly connected to the cylinder body of the cylinder (203) by connecting assembly. The barrier (6) also includes a baffle (62) and a sealing ring (63). The baffle (62) is fixedly connected to the rotating shaft (61), and the sealing ring (63) is fixedly connected to the inner wall of the air inlet (201).

2. The plastic bottle airtightness testing device according to claim 1, characterized in that: A handle (101) is fixedly installed on the top surface of the top plate of the test box (1). A fixing nut (102) is provided on the right side of the test box (1). The fixing nut (102) is used in conjunction with the screw to fix the air supply box (2). The top plate of the test box (1) is connected to the top of the test box (1) by an external circuit controller through an electric magnetic seal.

3. The airtightness testing device for plastic bottles according to claim 1, characterized in that: The movable frame (3) is also provided with a round hole (302), the diameter of which is equal to the diameter of the air inlet (201), and two sets of clamping plates (3012) are fixed and vertically installed on the top surface of the connecting rod (301).

4. The airtightness testing device for plastic bottles according to claim 1, characterized in that: The mounting component (5) consists of a connecting plate (51) and a slide rail (52). The connecting plate (51) is fixedly connected to the inner side of the connecting plate (4) by a bolt assembly. The slide rail (52) is fixedly connected to the inner side of the connecting plate (51). The inner side of the slide rail (52) is provided with a groove, and the movable frame (3) is slidably engaged in the groove.

5. The airtightness testing device for plastic bottles according to claim 1, characterized in that: The clamping mechanism (8) includes a push rod (81), a sleeve (82), a claw (83), and a placement plate (84). The top end of the push rod (81) is fixedly connected to the bottom end of the telescopic rod (701). The push rod (81) is movably engaged inside the sleeve (82). The bottom end of the sleeve (82) is movably engaged inside the claw (83) via a shaft. The claw (83) is located above the placement plate (84).

6. The airtightness testing device for plastic bottles according to claim 5, characterized in that: The bottom end of the push rod (81) is fixedly provided with a connecting frame (8101), and a pull rod (8102) is movably connected to the outside of the connecting frame (8101). The pull rod (8102) is movably connected to the groove on the outer wall of the push rod (81), and the bottom end of the pull rod (8102) is movably connected to the claw (83) through a shaft.

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