Environment-friendly wall thickness measuring device adaptable to irregularities for plastic packaging container

Abstract

The application discloses an environment-friendly wall thickness measuring device suitable for irregular positions of a plastic packaging container and belongs to the technical field of measuring equipment. In order to solve the problems that the existing caliper is not suitable for irregular plastic container walls, the measuring effect is not ideal, and the existing caliper cannot be operated by one hand, the hand-held handle on the outer wall of the hand-held installation main body is used to pull and adjust the pull rod by fingers, the moving arm and the fixed arm are separated after the pull rod is driven by the moving arm, the first measuring clamping legs on the side walls of the moving arm and the fixed arm are respectively clamped on the inner and outer walls of the plastic container, the pull rod is released to make the first measuring clamping legs automatically reset and clamp the irregular thick wall of the plastic container, the wall thickness data of the plastic container is read according to the first measuring scale line shown by the U-shaped moving clamping cover, the inner diameter of the container is detected by the telescopic pen rod and the second measuring clamping leg after the deflection adjusting deflection measuring rod is deflected, the irregular wall thickness of the plastic container is quickly and accurately detected by one hand, and the device is convenient and practical.

Description

Technical Field

[0001] This invention relates to the field of measuring equipment technology, and more specifically, to an environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts. Background Technology

[0002] Plastics are synthetic polymers, also known as macromolecules or macromolecules, and are commonly referred to as plastics or resins. They can be freely modified into various shapes and forms. They are materials polymerized from monomer raw materials through synthesis or condensation reactions, composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. Plastic containers, specifically blow-molded containers, are manufactured using a hollow molding method. They include open-top and closed-top plastic drums and cans. Open-top plastic drums and cans are mainly used for storing solid chemicals, food, and pharmaceuticals; closed-top plastic drums and cans are mainly used for storing liquids. They are lightweight, not easily broken, corrosion-resistant, and recyclable, with a maximum volume of 450L and a maximum load capacity of 400kg.

[0003] The maximum weight a plastic container can hold depends on its wall thickness. Thicker walls allow for a larger capacity without causing leakage due to the goods breaking through the side walls. Therefore, it's generally necessary to measure the wall thickness when using containers for loading goods. Existing devices for measuring plastic container wall thickness typically use calipers. Metal calipers are durable, resistant to damage, and can be melted down and recycled after damage, making them environmentally friendly and practical. However, existing calipers are not ideal for measuring the thickness of irregularly shaped plastic container walls; moreover, they are not suitable for one-handed operation, requiring two hands in most cases, making rapid measurements impossible when only one hand is available.

[0004] Therefore, we have launched an environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts. Summary of the Invention

[0005] The purpose of this invention is to provide an environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts, in order to solve the problems in the background art where existing calipers are not suitable for irregular plastic container walls and the measurement results are not ideal, as well as the problem that existing calipers cannot be operated with one hand.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts, comprising a fixed base and an installation body disposed on top of the fixed base. A hand handle is fixedly connected to one outer wall of the installation body, and a main measuring rod is fixedly connected to the outer wall of the installation body away from the hand handle. First measuring lines are provided on both outer walls of the main measuring rod, and a fixed arm is fixedly connected to the bottom end of the main measuring rod. A guide rod is fixedly connected between the fixed arm and the side wall of the installation body. A movable arm is movably sleeved on the outer wall of the guide rod, and a U-shaped movable arm is fixedly connected to the top of the movable arm. The U-shaped movable tag is attached to the bottom outer wall of the main measuring rod. The first measuring feet are fixedly connected to the side walls of the fixed arm and the movable arm near the bottom. An adjusting rod is fixedly connected to the outer wall of the movable arm away from the fixed arm. The end of the adjusting rod away from the movable arm passes through the side wall of the mounting body. The end of the adjusting rod extends to the bottom of the hand grip. A limiting plate is fixedly sleeved on the outer wall of the adjusting rod inside the hollow cavity of the mounting body. The limiting plate is located on the outer wall of the adjusting rod at the end of the hollow cavity away from the hand grip. A buffer spring is wound on the outer wall of the adjusting rod on the side of the limiting plate near the hand grip.

[0007] Furthermore, the initial end of the first measuring mark on the side wall of the main measuring pole is set adjacent to the fixed arm. When the U-shaped movable tag is movably sleeved on the bottom outer wall of the main measuring pole, the side plate of the U-shaped movable tag covers the first measuring mark. When the buffer spring is in a normally relaxed state, the ends of the first measuring tag feet on the side walls of the fixed arm and the movable arm are fitted together. At this time, the ends of the first measuring tag feet are set side by side with the initial end of the first measuring mark.

[0008] Furthermore, a storage groove is provided at the top of the main measuring rod, and a secondary measuring rod is movably installed inside the storage groove. When the secondary measuring rod is stored inside the storage groove, its end away from the installation body is movably connected to the inner wall of the storage groove through a positioning pin.

[0009] Furthermore, the auxiliary measuring rod includes a deflection measuring rod movably connected to the inner wall of the receiving groove and second measuring marks set on the outer walls on both sides of the deflection measuring rod. When the deflection measuring rod is stored in the receiving groove, a limiting groove is opened at the top of the deflection measuring rod at the port of the receiving groove. The middle protrusion of the mountain-shaped movable tag is movably engaged in the limiting groove. The side walls at both ends of the mountain-shaped movable tag are fitted onto the outer wall of the deflection measuring rod. A telescopic arm is fixedly connected to the outer wall of the end of the mountain-shaped movable tag away from the deflection measuring rod. A second measuring foot is fixedly connected to the side wall of the telescopic arm near the end of the mounting body.

[0010] Furthermore, the deflection measuring rod has a hollow structure with an installation cavity inside. The installation cavity is connected to the limiting slide groove. A drive screw is arranged parallel inside the installation cavity. The drive screw passes through the middle protrusion of the mountain-shaped movable tag. An adjustment dial is fixedly connected to the end of the drive screw near the fixed end of the deflection measuring rod. One end of the adjustment dial extends to the outside through a communication port on the outer wall of the deflection measuring rod.

[0011] Furthermore, the connecting port is located on the outer wall of the deflection measuring rod at the end away from the mountain-shaped movable marker. The marking at the starting end of the second measuring mark coincides with the marking at the starting end of the first measuring mark. When the deflection measuring rod extends to the outside of the receiving slot, the telescopic arm is located at the bottom of the deflection measuring rod. At this time, the setting direction of the second measuring foot on the side wall of the deflection measuring rod is opposite to the setting direction of the first measuring foot on the side wall of the fixed arm.

[0012] Furthermore, the first measuring foot has the same structure as the second measuring foot. The first measuring foot includes a frustum housing fixedly connected to the side wall of the fixed arm and a storage cavity disposed inside the frustum housing. A compressed air cushion is fixedly connected to the inner wall of the storage cavity on the fixed end side of the frustum housing. A movable ball is fixedly connected to the end of the compressed air cushion. The movable ball is disposed through the end side wall of the frustum housing. When the compressed air cushion is in a normal expanded state, half of the movable ball extends to the outside of the frustum housing.

[0013] Furthermore, a connecting air guide tube is fixedly connected to the side wall of the compressed air cushion. The end of the air guide tube is connected to an air cylinder on the inner wall of the storage cavity. The air cylinder is fixedly connected to the inner wall of the storage cavity outside the compressed air cushion, and a piston rod is movably sleeved at the end of the air cylinder. An anti-slip contact rod is fixedly connected to the end of the piston rod. The end of the anti-slip contact rod extends to the outside through a guide hole on the side wall of the frustum housing.

[0014] Furthermore, the fixed base includes adjustable telescopic rods movably connected to the outer walls of both sides of the mounting body and a counterweight metal base fixedly connected to the bottom of the adjustable telescopic rods. The adjustable telescopic rods are symmetrically arranged about the main measuring rod, and a first moving rod and a second moving rod are evenly spaced through the top of the counterweight metal base. The tops of the first moving rod and the second moving rod are fixedly connected to the bottom ends of the first magnet. Return springs are wound around the outer walls of the first moving rod and the second moving rod between the bottom of the first magnet and the counterweight metal base. The lower ends of the first moving rod and the second moving rod extend into the positioning grooves at the bottom of the counterweight metal base, respectively. Adhesive plates are fixedly connected to the bottoms of the first moving rod and the second moving rod. When the return springs are in a normally relaxed state, the adhesive plates are movably engaged in the positioning grooves. Friction pads are evenly fitted and installed at the bottom edge of the counterweight metal base outside the positioning groove port.

[0015] Furthermore, a mounting plate is fixedly connected to the side wall of the mounting body away from the main measuring rod near the bottom. A positioning rod is movably installed through the top of the mounting plate. The lower end of the positioning rod is movably sleeved in the positioning hole at the top of the counterweight metal base. A second magnet is fixedly connected to the side wall of the mounting body at the lower end of the main measuring rod. A positioning sleeve is movably connected to the bottom of the counterweight metal base near the main measuring rod. A movable support plate is movably fitted at the end of the positioning sleeve. An adsorption magnetic block is embedded at the bottom of the end of the movable support plate. When the counterweight metal base is suspended outside the second magnet, the same magnetic poles of the first magnet and the second magnet are arranged opposite each other.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The environmentally friendly wall thickness measuring device for plastic packaging containers proposed in this invention can adapt to irregular parts. With the design of a hand grip, when holding the device, the user can use their fingers to pull the adjustment lever. Pulling the adjustment lever moves the moving arm away from the fixed arm. After releasing the adjustment lever, the moving arm returns to its original position, allowing the first measuring clips between the fixed arm and the moving arm to respectively engage with the inner and outer walls of the plastic container. Based on the reading of the first measuring mark on the main measuring rod by the U-shaped moving tag at the top of the moving arm, the wall thickness of the irregular part of the plastic container can be quickly and easily measured with one hand.

[0018] 2. The environmentally friendly wall thickness measuring device for plastic packaging containers proposed in this invention can adapt to irregular parts. After measuring the wall thickness of the plastic container, the telescopic arm at the top of the main measuring rod is held to deflect the deflecting measuring rod out of the storage slot, making it parallel to the main measuring rod. Then, the adjustment dial is turned to drive the drive screw inside the deflecting measuring rod to rotate. The drive screw drives the mountain-shaped moving tag and the telescopic arm to move, so that the second measuring tag foot on the side wall of the telescopic arm fits against the other inner wall of the plastic container. The reading on the second measuring mark on the side wall of the deflecting measuring rod covered by the mountain-shaped moving tag is the inner diameter of the container. This realizes one-handed and quick detection of the inner diameter of the plastic container, which is convenient and fast.

[0019] 3. The environmentally friendly wall thickness measuring device for plastic packaging containers proposed in this invention can adapt to irregular parts. After the counterweight metal base is deflected, the stretching and moving plate is pushed against its bottom. The parallel opposing first magnet and the second magnet on the side wall of the mounting body repel each other through magnetic force. The first magnet pushes the moving rod to move and compress the reset spring, pushing the adhesive plate at the end of the moving rod to the port of the mounting groove. After the first measuring foot is attached to the inner and outer walls of the plastic container, the counterweight metal base is pressed to compress the friction pad, so that the adhesive plate sticks to the outer wall of the plastic container. This increases the stability of the device when detecting the wall thickness of the plastic container, avoids measurement errors caused by hand tremors, and is convenient and practical. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a cross-sectional view of the mounting body of the present invention;

[0022] Figure 3 This is a schematic diagram of the first measuring pin structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the installation structure of the auxiliary measuring rod of the present invention;

[0024] Figure 5 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0025] Figure 6 This is a schematic diagram of the secondary measuring rod structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the upright structure of the fixed base of the present invention;

[0027] Figure 8 This is a schematic diagram of the fixed base deflection state structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the mounting structure of the positioning sleeve and the movable tray of the present invention;

[0029] Figure 10 This is a schematic diagram of the adhesive plate mounting structure of the present invention.

[0030] In the diagram: 1. Fixed base; 111. Adjustable telescopic rod; 112. Counterweight metal base; 113. First moving rod; 114. Second moving rod; 115. First magnet; 116. Return spring; 117. Positioning groove; 118. Adhesive plate; 119. Friction pad; 1110. Mounting plate; 1111. Positioning rod; 1112. Positioning hole; 1113. Second magnet; 1114. Positioning sleeve; 1115. Moving tray; 1116. Adsorption magnet; 2. Mounting body; 3. Hand grip; 4. Main measuring rod; 41. Storage slot; 42. Secondary measuring rod; 421. Deflection measuring rod; 422. Second measuring mark; 42 3. Limiting groove; 424. Mountain-shaped movable marker; 425. Telescopic arm; 426. Second measuring foot; 427. Mounting cavity; 428. Drive screw; 429. Adjusting dial; 4210. Connecting port; 5. First measuring mark; 6. Fixed arm; 7. Guide rod; 8. Moving arm; 9. U-shaped movable marker; 10. First measuring foot; 101. Frustum housing; 102. Storage cavity; 103. Compressed air cushion; 104. Moving ball; 105. Air duct; 106. Air cylinder; 107. Piston rod; 108. Anti-slip contact rod; 109. Guide hole; 11. Adjusting pull rod; 12. Hollow cavity; 13. Limiting plate; 14. Buffer spring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] To address the issues of existing calipers being unsuitable for irregular plastic container walls, resulting in suboptimal measurement results, and the inability to operate them with one hand, please refer to [link to relevant documentation]. Figures 1-3 The following preferred technical solutions are provided:

[0033] An environmentally friendly wall thickness measuring device for plastic packaging containers, adaptable to irregular parts, includes a fixed base 1 and a mounting body 2 mounted on top of the fixed base 1. A hand handle 3 is fixedly connected to one outer wall of the mounting body 2, and a main measuring rod 4 is fixedly connected to the outer wall of the mounting body 2 away from the hand handle 3. First measuring lines 5 are provided on both outer walls of the main measuring rod 4, and a fixed arm 6 is fixedly connected to the bottom end of the main measuring rod 4. A guide rod 7 is fixedly connected between the fixed arm 6 and the side wall of the mounting body 2. A movable arm 8 is movably sleeved on the outer wall of the guide rod 7, and a U-shaped movable tag 9 is fixedly connected to the top of the movable arm 8. The U-shaped movable tag 9 is movably sleeved on the main measuring rod. On the bottom outer wall of 4, and on the side wall adjacent to the fixed arm 6 and the movable arm 8, near the bottom, a first measuring foot 10 is fixedly connected. On the outer wall of the movable arm 8 away from the fixed arm 6, an adjusting rod 11 is fixedly connected. The end of the adjusting rod 11 away from the movable arm 8 passes through the side wall of the mounting body 2. The end of the adjusting rod 11 extends to the bottom of the hand grip 3. A limiting plate 13 is fixedly sleeved on the outer wall of the adjusting rod 11 inside the hollow cavity 12 of the mounting body 2. The limiting plate 13 is located on the outer wall of the adjusting rod 11 at the end of the hollow cavity 12 away from the hand grip 3. A buffer spring 14 is wound on the outer wall of the adjusting rod 11 on the side of the limiting plate 13 close to the hand grip 3.

[0034] The initial end of the first measuring mark 5 on the side wall of the main measuring rod 4 is set adjacent to the fixed arm 6. When the U-shaped movable tag 9 is movably sleeved on the bottom outer wall of the main measuring rod 4, the side plate of the U-shaped movable tag 9 covers the first measuring mark 5. When the buffer spring 14 is in a normally relaxed state, the ends of the first measuring tag feet 10 on the side walls of the fixed arm 6 and the movable arm 8 are fitted together. At this time, the ends of the first measuring tag feet 10 are set side by side with the initial end of the first measuring mark 5, and the side wall of the U-shaped movable tag 9 near the initial end of the first measuring mark 5 is set side by side with the initial end of the first measuring mark 5.

[0035] The first measuring foot 10 has the same structure as the second measuring foot 426. The first measuring foot 10 includes a frustum housing 101 fixedly connected to the side wall of the fixed arm 6 and a storage cavity 102 disposed inside the frustum housing 101. A compressed air cushion 103 is fixedly connected to the inner wall of the storage cavity 102 on the fixed end side of the frustum housing 101. A movable ball 104 is fixedly connected to the end of the compressed air cushion 103. The movable ball 104 is disposed through the end side wall of the frustum housing 101. When the compressed air cushion 103 is in a normal expanded state, half of the movable ball 104 extends to the outside of the frustum housing 101.

[0036] A connecting air guide tube 105 is fixedly connected to the side wall of the compressed air cushion 103. The end of the air guide tube 105 is connected to an air cylinder 106 on the inner wall of the receiving cavity 102. The air cylinder 106 is fixedly connected to the inner wall of the receiving cavity 102 outside the compressed air cushion 103, and a piston rod 107 is movably sleeved at the end of the air cylinder 106. An anti-slip contact rod 108 is fixedly connected to the end of the piston rod 107. The end of the anti-slip contact rod 108 extends to the outside of the frustum housing 101 through a guide hole 109 on its side wall. The first measuring foot 10 is attached to the plastic container. On the side wall, the moving ball 104 squeezes and compresses the air cushion 103, pushing the gas inside the air cushion 103 into the air cylinder 106 through the air guide pipe 105, which in turn pushes the piston rod 107 to move. The piston rod 107 pushes the anti-slip contact rod 108 out of the guide hole 109 on the side wall of the frustum housing 101. When the end of the first measuring foot 10 is in contact with the irregular inner wall of the plastic container, the anti-slip contact rod 108 is distributed on the outside of the first measuring foot 10 and in contact with the inner wall of the plastic container, preventing the first measuring foot 10 from slipping due to unstable contact with the irregular inner wall of the plastic container.

[0037] Specifically, the fixed base 1 is tilted and suspended on the side of the mounting body 2 away from the hand grip 3. After holding the hand grip 3, the end of the adjusting rod 11 is hooked with fingers and pulled. When the adjusting rod 11 and the limiting plate 13 move, the buffer spring 14 is compressed. At the same time, the adjusting rod 11 drives the moving arm 8 to slide on the outer wall of the guide rod 7. The moving arm 8 drives the first measuring foot 10 at the bottom away from the fixed arm 6. The U-shaped moving tag 9 at the top of the moving arm 8 moves the first measuring mark 5 on the side wall of the main measuring mark 4 away from the initial end of the first measuring mark 5. Then, the hand grip 3 is held with one hand to press the fixed base 1 against the outer wall of the plastic container, so that the gap between the fixed arm 6 and the moving arm 8 is closed. The first measuring foot 10 on the side wall of the plastic container is placed against the irregular inner wall of the plastic container to a certain depth on the side wall of the fixed arm 6. After the finger releases the adjusting lever 11, the buffer spring 14 drives the adjusting lever 11 and the moving arm 8 to move in opposite directions to reset, so that the first measuring foot 10 on the side wall of the moving arm 8 is placed against the outer wall of the plastic container. At this time, the first measuring foot 10 on the side walls of the fixed arm 6 and the moving arm 8 are against the inner and outer walls of the irregular side wall of the plastic container. The distance between the first measuring feet 10 is the thickness reading of the irregular side wall of the plastic container as indicated by the first measuring mark 5 on the U-shaped moving mark 9. This achieves stable and accurate one-handed operation for measuring the thickness of the container side wall, and is convenient to use.

[0038] To enrich the detection functions of the main measuring rod 4 and achieve rapid detection of the container's inner diameter, such as... Figure 1 and Figures 4-6 The following preferred technical solutions are provided:

[0039] The top of the main measuring rod 4 is provided with a storage groove 41. A secondary measuring rod 42 is movably installed inside the storage groove 41. When the secondary measuring rod 42 is stored inside the storage groove 41, its end away from the mounting body 2 is movably connected to the inner wall of the storage groove 41 through a positioning pin.

[0040] The auxiliary measuring rod 42 includes a deflection measuring rod 421 movably connected to the inner wall of the storage groove 41 and a second measuring mark 422 set on the outer walls of both sides of the deflection measuring rod 421. When the deflection measuring rod 421 is stored in the storage groove 41, a limiting groove 423 is opened at the top of the deflection measuring rod 421 at the port of the storage groove 41. The middle protrusion of the mountain-shaped movable tag 424 is movably engaged in the limiting groove 423. The two side walls of the mountain-shaped movable tag 424 are sleeved on the outer wall of the deflection measuring rod 421. A telescopic arm 425 is fixedly connected to the outer wall of the end of the mountain-shaped movable tag 424 away from the deflection measuring rod 421. A second measuring foot 426 is fixedly connected to the side wall of the end of the telescopic arm 425 near the installation body 2.

[0041] The deflection measuring rod 421 has a hollow structure with an installation cavity 427 inside. The installation cavity 427 is connected to the limiting slide groove 423. A drive screw 428 is arranged parallel inside the installation cavity 427. The drive screw 428 is protruding through the middle of the mountain-shaped movable tag 424. An adjustment dial 429 is fixedly connected to the end of the drive screw 428 near the fixed end of the deflection measuring rod 421. One end of the adjustment dial 429 extends to the outside through the communication port 4210 on the outer wall of the deflection measuring rod 421.

[0042] The connecting port 4210 is located on the outer wall of the deflection measuring rod 421 away from the mountain-shaped movable marker 424. The marker at the starting end of the second measuring mark 422 coincides with the marker at the starting end of the first measuring mark 5. When the deflection measuring rod 421 deflects and extends to the outside of the storage groove 41, the telescopic arm 425 is located at the bottom of the deflection measuring rod 421. At this time, the direction of the second measuring foot 426 on the side wall of the deflection measuring rod 421 is opposite to the direction of the first measuring foot 10 on the side wall of the fixed arm 6.

[0043] Specifically, the telescopic arm 425 is held to drive the deflection measuring rod 421 to deflect, causing it to slide out of the storage slot 41 and deflect until it is parallel to the main measuring rod 4. Then, the height of the telescopic arm 425 is adjusted so that the second measuring foot 426 on its side wall is approximately the same height as the first measuring foot 10 on the side wall of the fixed arm 6. Then, the thumb is used to turn the adjustment dial 429 on the top of the deflection measuring rod 421. The adjustment dial 429 drives the drive screw 428 inside the deflection measuring rod 421 to rotate. When the drive screw 428 is suspended, it drives the mountain-shaped movable marker 424 to move towards the end of the deflection measuring rod 421 until the second measuring foot 426 on the side wall of the telescopic arm 425 is in contact with the inner wall of the other end of the plastic container. At this time, the reading of the second measuring mark 422, which is partially covered by the mountain-shaped movable marker 424 on the top of the telescopic arm 425, is the inner diameter reading of the plastic container, which is convenient and quick.

[0044] To enhance the stability of the device when measuring irregular wall thicknesses of plastic containers and ensure the accuracy of the test data, such as Figure 1 and Figures 7-10 As shown, the following preferred technical solutions are provided:

[0045] The fixed base 1 includes adjustable telescopic rods 111 movably connected to the outer walls of both sides of the mounting body 2 and a counterweight metal base 112 fixedly connected to the bottom of the adjustable telescopic rods 111. The adjustable telescopic rods 111 are symmetrically arranged about the main measuring rod 4, and the top of the counterweight metal base 112 is evenly spaced with first moving rods 113 and second moving rods 114. The tops of the first moving rods 113 and second moving rods 114 are fixedly connected to the bottom ends of the first magnet 115. The ... fixedly connected to the bottom ends of the first magnet 115. The first moving rods 113 and second moving rods 114 are fixedly connected to the bottom ends of the first magnet 115 and the counterweight metal base 112. A return spring 116 is wound around the outer wall of both the first moving rod 113 and the second moving rod 114. The lower ends of the first moving rod 113 and the second moving rod 114 extend into the positioning groove 117 at the bottom of the counterweight metal base 112. Adhesive plates 118 are fixedly connected to the bottom of the first moving rod 113 and the second moving rod 114. When the return spring 116 is in a normally relaxed state, the adhesive plates 118 are movably engaged in the positioning groove 117. Friction pads 119 are evenly fitted and installed at the bottom edge of the counterweight metal base 112 outside the port of the positioning groove 117.

[0046] A mounting plate 1110 is fixedly connected to the side wall of the mounting body 2 away from the main measuring rod 4 near the bottom. A positioning rod 1111 is movably connected through the top of the mounting plate 1110. The lower end of the positioning rod 1111 is movably sleeved in the positioning hole 1112 at the top of the counterweight metal base 112. A second magnet 1113 is fixedly connected to the side wall of the mounting body 2 at the lower end of the main measuring rod 4. A positioning sleeve 1114 is movably connected to the bottom of the counterweight metal base 112 near the main measuring rod 4. A movable support plate 1115 is movably fitted at the end of the positioning sleeve 1114. An adsorption magnetic block 1116 is embedded at the bottom of the end of the movable support plate 1115. When the counterweight metal base 112 is suspended outside the second magnet 1113, the same magnetic poles of the first magnet 115 and the second magnet 1113 are arranged opposite each other.

[0047] Specifically, the counterweight metal base 112 is tilted to the side of the mounting body 2 away from the handgrip 3. After stretching the moving plate 1115, the bottom of the counterweight metal base 112 is attracted by the magnetic block 1116. The moving plate 1115 lifts the counterweight metal base 112, so that the first magnet 115 and the second magnet 1113 are set opposite each other. Like poles repel each other, pushing the first magnet 115 to move the moving rod and compress the return spring 116. The adhesive plate 118 at the end of the moving rod is pushed to the port of the positioning groove 117. After holding the handgrip 3, the gap between the counterweight metal bases 112 is clamped to the side wall of the container. After it moves to an appropriate depth, the end of the counterweight metal base 112 is pressed against the outer wall of the plastic container. The counterweight metal base 112 is pressed to compress the friction pad 119, so that the adhesive plate 118 is stuck to the outer wall of the plastic container. This fully ensures the stability when measuring the irregular thick wall of the plastic container and avoids the measurement error caused by hand tremors when holding the instrument. It is convenient and practical.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts, comprising a fixed base (1) and a mounting body (2) disposed on the top of the fixed base (1), wherein a hand handle (3) is fixedly connected to one outer wall of the mounting body (2), characterized in that: A main measuring rod (4) is fixedly connected to the outer wall of the mounting body (2) away from the hand grip (3). First measuring lines (5) are set on the outer walls of both sides of the main measuring rod (4). A fixed arm (6) is fixedly connected to the bottom end of the main measuring rod (4). A guide rod (7) is fixedly connected between the fixed arm (6) and the side wall of the mounting body (2). A movable arm (8) is movably sleeved on the outer wall of the guide rod (7). A U-shaped movable tag (9) is fixedly connected to the top of the movable arm (8). The U-shaped movable tag (9) is movably sleeved on the bottom outer wall of the main measuring rod (4). First measuring lines are fixedly connected to the side walls of the fixed arm (6) and the movable arm (8) near the bottom. The foot (10) and the movable arm (8) are fixedly connected to the outer wall of the side away from the fixed arm (6). The end of the adjustable rod (11) away from the movable arm (8) passes through the side wall of the mounting body (2). The end of the adjustable rod (11) extends to the bottom of the hand grip (3). The adjustable rod (11) inside the hollow cavity (12) of the mounting body (2) is fixedly sleeved with a limiting plate (13). The limiting plate (13) is set on the outer wall of the adjustable rod (11) at the end of the hollow cavity (12) away from the hand grip (3). A buffer spring (14) is wound on the outer wall of the adjustable rod (11) on the side of the limiting plate (13) close to the hand grip (3).

2. The environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts as described in claim 1, characterized in that: The initial end of the first measuring mark (5) on the side wall of the main measuring rod (4) is set adjacent to the fixed arm (6). When the U-shaped movable tag (9) is movably attached to the bottom outer wall of the main measuring rod (4), the side plate of the U-shaped movable tag (9) covers the first measuring mark (5). When the buffer spring (14) is in a normal relaxed state, the ends of the first measuring clips (10) on the side walls of the fixed arm (6) and the movable arm (8) are attached to each other. At this time, the end of the first measuring clip (10) is set side by side with the initial end of the first measuring mark (5).

3. The environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts as described in claim 1, characterized in that: The top of the main measuring rod (4) is provided with a storage groove (41). A secondary measuring rod (42) is movably installed inside the storage groove (41). When the secondary measuring rod (42) is stored inside the storage groove (41), its end away from the installation body (2) is movably connected to the inner wall of the storage groove (41) through a positioning pin.

4. The environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts as described in claim 3, characterized in that: The auxiliary measuring rod (42) includes a deflection measuring rod (421) that is movably connected to the inner wall of the storage groove (41) and a second measuring mark (422) set on the outer walls of both sides of the deflection measuring rod (421). When the deflection measuring rod (421) is stored in the storage groove (41), a limiting groove (423) is opened at the top of the deflection measuring rod (421) at the port of the storage groove (41). The middle protrusion of the mountain-shaped movable tag (424) is movably engaged in the limiting groove (423). The two side walls of the mountain-shaped movable tag (424) are sleeved on the outer wall of the deflection measuring rod (421). A telescopic arm (425) is fixedly connected to the outer wall of the end of the mountain-shaped movable tag (424) away from the deflection measuring rod (421). A second measuring foot (426) is fixedly connected to the side wall of the telescopic arm (425) near the end of the mounting body (2).

5. The environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts as described in claim 4, characterized in that: The deflection measuring rod (421) has a hollow structure and an installation cavity (427) is provided inside. The installation cavity (427) is connected to the limiting slide groove (423). A drive screw (428) is arranged parallel inside the installation cavity (427). The drive screw (428) is protruding through the middle of the mountain-shaped movable tag (424). An adjustment dial (429) is fixedly connected to the end of the drive screw (428) near the fixed end of the deflection measuring rod (421). One end of the adjustment dial (429) extends to the outside through the connecting port (4210) on the outer wall of the deflection measuring rod (421).

6. The environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts as described in claim 5, characterized in that: The connecting port (4210) is set on the outer wall of the deflection measuring rod (421) away from the mountain-shaped movable marker (424). The marking at the starting end of the second measuring mark (422) coincides with the marking at the starting end of the first measuring mark (5). When the deflection measuring rod (421) deflects and extends to the outside of the storage groove (41), the telescopic arm (425) is located at the bottom of the deflection measuring rod (421). At this time, the setting direction of the second measuring foot (426) on the side wall of the deflection measuring rod (421) is opposite to the setting direction of the first measuring foot (10) on the side wall of the fixed arm (6).

7. The environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts as described in claim 6, characterized in that: The first measuring foot (10) has the same structure as the second measuring foot (426). The first measuring foot (10) includes a frustum housing (101) fixedly connected to the side wall of the fixed arm (6) and a storage cavity (102) disposed inside the frustum housing (101). A compressed air cushion (103) is fixedly connected to the inner wall of the storage cavity (102) on the fixed end side of the frustum housing (101). A movable ball (104) is fixedly connected to the end of the compressed air cushion (103). The movable ball (104) is disposed through the end side wall of the frustum housing (101). When the compressed air cushion (103) is in a normal relaxed state, half of the movable ball (104) extends to the outside of the frustum housing (101).

8. The environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts as described in claim 7, characterized in that: A connecting air pipe (105) is fixedly connected to the side wall of the compressed air cushion (103). The end of the air pipe (105) is connected to the air cylinder (106) on the inner wall of the storage cavity (102). The air cylinder (106) is fixedly connected to the inner wall of the storage cavity (102) outside the compressed air cushion (103). A piston rod (107) is movably sleeved at the end of the air cylinder (106). An anti-slip contact rod (108) is fixedly connected at the end of the piston rod (107). The end of the anti-slip contact rod (108) extends to the outside through the guide hole (109) on the side wall of the frustum housing (101).

9. The environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts as described in claim 1, characterized in that: The fixed base (1) includes an adjustable telescopic rod (111) movably connected to the outer walls of both sides of the mounting body (2) and a counterweight metal base (112) fixedly connected to the bottom of the adjustable telescopic rod (111). The adjustable telescopic rod (111) is symmetrically arranged about the main measuring rod (4), and the top of the counterweight metal base (112) is evenly spaced with a first moving rod (113) and a second moving rod (114). The tops of the first moving rod (113) and the second moving rod (114) are fixedly connected to the bottom ends of the first magnet (115). The first moving rod is located between the bottom of the first magnet (115) and the counterweight metal base (112). (113) and the outer wall of the second moving rod (114) are both wound with return springs (116), and the lower ends of the first moving rod (113) and the second moving rod (114) extend into the positioning groove (117) at the bottom of the counterweight metal base (112). The bottom of the first moving rod (113) and the second moving rod (114) are respectively fixedly connected with adhesive plates (118). When the return spring (116) is in a normal relaxed state, the adhesive plates (118) are movably engaged in the positioning groove (117). Friction pads (119) are evenly fitted and installed at the bottom edge of the counterweight metal base (112) outside the port of the positioning groove (117).

10. The environmentally friendly wall thickness measuring device for plastic packaging containers that can adapt to irregular parts as described in claim 9, characterized in that: A mounting plate (1110) is fixedly connected to the side wall of the mounting body (2) away from the main measuring rod (4) near the bottom. A positioning rod (1111) is movably connected through the top of the mounting plate (1110). The lower end of the positioning rod (1111) is movably sleeved in the positioning hole (1112) at the top of the counterweight metal base (112). A second magnet (1113) is fixedly connected to the side wall of the mounting body (2) at the lower end of the main measuring rod (4). A positioning sleeve (1114) is movably connected to the bottom of the counterweight metal base (112) near the main measuring rod (4). A movable support plate (1115) is movably fitted at the end of the positioning sleeve (1114). An adsorption magnetic block (1116) is embedded at the bottom of the end of the movable support plate (1115). When the counterweight metal base (112) is suspended outside the second magnet (1113), the first magnet (115) and the second magnet (1113) are set with the same magnetic poles opposite each other.

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