Size measurement equipment for inspection of plastic finished product

Abstract

The invention provides a size measuring device for plastic finished product inspection, and relates to the technical field of plastic finished product measuring equipment.The size measuring device comprises a machine base and a limiting structure, moving assemblies are installed on the two sides of the machine base correspondingly, a support is installed on the upper surfaces of the moving assemblies, and a measuring assembly is installed at the upper end of the support; a measuring lens is installed at the lower end of the measuring assembly, a limiting structure is arranged on the upper surface of the machine base, the limiting structure comprises a connecting frame, and the connecting frame is fixedly connected with the machine base. The problems of low manual placement and adjustment efficiency and poor position consistency during plastic product measurement in the prior art can be effectively solved, meanwhile, through the elastic contact and rolling friction characteristics of the rubber roll shaft, damage to the surfaces of the plastic products caused by rigid clamping can be avoided, the adaptability to the plastic products of different sizes can be improved, and the measurement accuracy is improved. And the friction force is enhanced in cooperation with the design of the notches, and the limiting stability and the conveying smoothness are further guaranteed.

Description

Technical Field

[0001] This invention relates to the field of measuring equipment for finished plastic parts, and more particularly to a dimensional measuring device for inspecting finished plastic parts. Background Technology

[0002] The inspection of finished plastic parts is a crucial step in ensuring product quality, and dimensional measuring equipment plays a vital role in this process.

[0003] Prior art, such as the invention with publication number CN113348050B, discloses a measuring device for a machine tool. This patent employs a measuring sensor and a hardwired interface module. The measuring sensor measures objects, such as tools, within the machine tool housing, while the hardwired interface module provides electrical connection via one or more wires to an associated external interface located outside the machine tool housing. The device also includes a wireless communication module capable of wirelessly communicating with associated wireless devices, such as spindle probes, located within the machine tool housing.

[0004] The inventors discovered that existing plastic product measuring devices require manual placement and adjustment during measurement. This is not only cumbersome and inefficient, but also makes it difficult to ensure consistent placement, leading to measurement errors due to human intervention. Furthermore, traditional limiting structures often use rigid clamping methods for conveying and limiting plastic products. This is not only unsuitable for plastic products of different sizes, but can also cause surface damage during clamping, affecting product quality. Additionally, plastic products easily accumulate dust and impurities during transport; if not cleaned promptly, this directly impacts the accuracy of the measuring lens, resulting in inaccurate measurement data. Moreover, after measurement, the plastic product is usually placed low on the machine base, requiring manual handling by bending over or reaching deep into the machine, which is inconvenient and poses certain safety hazards. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a dimensional measuring device for inspecting finished plastic parts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a dimensional measuring device for inspecting finished plastic parts, comprising a base and a limiting structure. Movable components are installed on both sides of the base. A bracket is installed on the upper surface of the movable components. A measuring component is installed at the upper end of the bracket, and a measuring lens is installed at the lower end of the measuring component. The limiting structure is provided on the upper surface of the base. The limiting structure includes a connecting frame, which is fixedly connected to the base. Two sliding grooves are formed on the inner wall of the connecting frame, and two sliders are slidably connected to the inner walls of the sliding grooves. A connecting plate is fixedly connected to the upper surface of the sliders, and a screw is threadedly connected to the inner wall of the connecting plate. Two fixing plates are fixedly connected to the upper surface of the connecting frame, and the fixing plates are rotatably connected to the screws. A fixing rod is fixedly connected to one side of the connecting frame. A servo motor is installed at the upper end of the fixing rod, and the output end of the servo motor is fixedly connected to the screw. A connecting rod is fixedly connected to the lower surface of the sliders, and an auxiliary frame is fixedly connected to the lower end of the connecting rod. A connecting shaft is rotatably connected to the inner wall of the auxiliary frame, and a roller is fixedly connected to the arc surface of the connecting shaft.

[0007] This preferred solution achieves the following: when limiting the movement of plastic products, the output of a servo motor drives a screw to rotate under the support of a fixed plate. Since the screw is threadedly connected to the inner wall of the connecting plate, and the connecting plate is slidably connected to the inner wall of the connecting frame via a slider, the rotation of the screw drives the two connecting plates closer or further apart along the groove direction, thus causing the slider to move synchronously. Simultaneously, the connecting rod on its lower surface drives the auxiliary frame to move, causing the connecting shaft and the arc-shaped roller shaft, which are rotatably connected to the inner wall of the auxiliary frame, to move to both sides of the plastic product. As the two auxiliary frames approach each other, the roller shaft contacts the side of the plastic product. Utilizing the rotational characteristics of the roller shaft, it not only provides lateral limiting for the plastic product, preventing lateral deviation during movement, but also reduces friction through the rolling motion of the roller shaft, ensuring smooth conveying of the plastic product and effectively improving the adaptability and stability of limiting plastic products of different sizes.

[0008] Preferably, the roller shaft has a circular cross-section and is a rubber shaft.

[0009] By adopting this preferred solution, the rubber material has a certain degree of elasticity, which can buffer and protect the surface of plastic products, preventing damage to plastic products caused by hard contact.

[0010] Preferably, a limiting rod is fixedly connected inside the groove, and the limiting rod is slidably connected to the slider.

[0011] By adopting this preferred solution, the limiting rod can limit the slider, preventing the slider from deviating when sliding on the inner wall of the slide rail, thus improving the stability of the slider sliding.

[0012] Preferably, the roller shaft has a plurality of slots on its arc surface, and the plurality of slots are evenly distributed on the roller shaft.

[0013] By adopting this preferred solution, the groove can increase the friction between the roller and the plastic product, thus preventing the roller from sliding between the roller and the plastic product and causing wear.

[0014] Preferably, the cross-section of the fixing rod is "L" shaped, and the fixing rod is an aluminum alloy rod.

[0015] Preferably, the upper surface of the base is provided with a cleaning structure, the cleaning structure including two slide rails, the two slide rails being fixedly connected to the base, a moving block being slidably connected to the inner wall of the slide rail, an auxiliary plate being fixedly connected to the side of the moving block away from the connecting frame, a lead screw being threadedly connected to the inner wall of the auxiliary plate, the lead screw abutting against the slide rail, a mounting plate being fixedly connected to the side of the two moving blocks close to each other, and a cleaning pad being fixedly connected to the lower surface of the mounting plate.

[0016] By adopting this preferred solution, when it is necessary to clean the surface of plastic products, the position of the mounting plate and cleaning pad can be adjusted by loosening the screw and allowing the moving block to slide within the slide rail. After the cleaning pad is aligned with the surface of the plastic product, the screw is tightened to fix the moving block. Then, the mounting plate is pushed to move the cleaning pad on the surface of the plastic product. The friction of the cleaning pad removes surface dust, impurities, etc., ensuring the cleanliness of the surface of the plastic product before measurement and avoiding stains from affecting the detection accuracy of the measuring lens.

[0017] Preferably, a slide rod is fixedly connected inside the slide rail, and the slide rod is slidably connected to the moving block.

[0018] By adopting this preferred solution, the sliding rod can limit the movement of the block, preventing the block from shifting when sliding on the inner wall of the slide rail.

[0019] Preferably, an anti-slip pad, which is a rubber pad, is fixedly connected to one end of the lead screw near the slide rail.

[0020] By adopting this preferred solution, the anti-slip pad increases the friction between the lead screw and the slide rail, preventing slippage when the lead screw and slide rail are in contact and fixed together.

[0021] Preferably, the inner wall of the base is provided with a lifting structure, the lifting structure includes a placement groove, the placement groove is opened on the base, the inner wall of the placement groove is slidably connected to a top plate, the inner wall of the base is provided with two auxiliary grooves, the interior of the auxiliary grooves is equipped with hydraulic rods, and the output end of the hydraulic rods is fixedly connected to the top plate.

[0022] By adopting this preferred solution, when it is necessary to lift the top plate after measurement, the hydraulic rod can be activated, and the output end of the hydraulic rod can be used to drive the top plate to slide upward along the inner wall of the placement groove, thereby lifting the top plate. This makes it convenient for operators to clean the surface of the top plate or to pick up or put down items placed on the top plate, avoiding the inconvenience of manually bending over or reaching into the machine base, and improving the convenience and efficiency of operation.

[0023] Preferably, a plurality of positioning rods are fixedly connected to the lower surface of the top plate, and a plurality of positioning grooves are provided on the inner wall of the base, wherein the positioning grooves are slidably connected to the positioning rods.

[0024] By adopting this preferred solution, the positioning rod and positioning groove can limit the top plate and prevent the top plate from shifting when sliding.

[0025] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, by setting a limiting structure, the problems of low efficiency and poor positional consistency of manual placement and adjustment when measuring plastic products in the prior art can be effectively solved. At the same time, through the elastic contact and rolling friction characteristics of the rubber roller shaft, damage to the surface of the plastic product can be avoided by hard clamping, and the adaptability to plastic products of different sizes can be improved. Combined with the groove design to enhance friction, the limiting stability and smooth conveying are further guaranteed.

[0026] 2. In this invention, by setting up a cleaning structure, the surface of the plastic product can be pre-cleaned before it is conveyed to the measuring component. The surface of the plastic product will come into contact with the cleaning pad and slide relative to it. The cleaning pad will then use its own material properties to wipe and clean the dust, debris and other dirt on the surface of the plastic product, ensuring that the surface of the plastic product entering the measuring area is clean. This provides good conditions for the accurate detection of the subsequent measuring lens, effectively reduces the measurement error caused by surface stains, and improves the reliability of the overall measurement work.

[0027] 3. In this invention, by setting up a lifting structure, the plastic product can be easily picked up and placed without manually bending over or reaching into the machine base after measurement. This avoids the inconvenience of picking up and placing the plastic product due to its low position in traditional operations, reduces the labor intensity of operators, and also reduces the safety hazards such as bumps and knocks that may be caused by manual picking up and placing. It significantly improves the convenience and safety of operation and further optimizes the user experience of the entire plastic finished product measuring equipment. Attached Figure Description

[0028] Figure 1 This invention provides a three-dimensional structural schematic diagram of a dimensional measuring device for inspecting finished plastic parts; Figure 2This invention provides a schematic diagram of the limiting structure of a dimensional measuring device for inspecting finished plastic parts; Figure 3 This invention proposes a dimensional measuring device for inspecting finished plastic parts. Figure 2 A schematic diagram of the side structure; Figure 4 This invention proposes a dimensional measuring device for inspecting finished plastic parts. Figure 3 Enlarged view of point A; Figure 5 This invention provides a schematic diagram of the cleaning structure of a dimensional measuring device for inspecting finished plastic parts. Figure 6 This invention provides a schematic diagram of the lifting structure of a dimensional measuring device for inspecting finished plastic parts.

[0029] Legend: 1. Base; 2. Moving component; 3. Bracket; 4. Measuring component; 5. Measuring lens; 6. Limiting structure; 601. Connecting frame; 602. Slide groove; 603. Fixing plate; 604. Connecting plate; 605. Slider; 606. Screw; 607. Servo motor; 608. Fixing rod; 609. Connecting rod; 610. Auxiliary frame; 611. Connecting shaft; 612. Roller shaft; 613. Groove; 614. Limiting rod; 7. Cleaning structure; 71. Slide rail; 72. Mounting plate; 73. Cleaning pad; 74. Slide rod; 75. Moving block; 76. Auxiliary plate; 77. Lead screw; 78. Anti-slip pad; 8. Lifting structure; 81. Top plate; 82. Hydraulic rod; 83. Positioning rod; 84. Auxiliary groove; 85. Positioning groove; 86. Placement groove. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0032] Example 1, as Figure 1-6 As shown, the present invention provides a dimensional measuring device for inspecting finished plastic parts, including a base 1 and a limiting structure 6. Movable components 2 are installed on both sides of the base 1. A bracket 3 is installed on the upper surface of the movable components 2. A measuring component 4 is installed on the upper end of the bracket 3. A measuring lens 5 is installed on the lower end of the measuring component 4. The limiting structure 6 is provided on the upper surface of the base 1. A cleaning structure 7 is provided on the upper surface of the base 1. A lifting structure 8 is provided on the inner wall of the base 1.

[0033] The following section will explain the specific settings and functions of its limiting structure 6, cleaning structure 7, and lifting structure 8.

[0034] like Figures 2 to 4As shown, the limiting structure 6 includes a connecting frame 601, which is fixedly connected to the machine base 1. Two sliding grooves 602 are opened on the inner wall of the connecting frame 601. Two sliders 605 are slidably connected to the inner wall of the sliding grooves 602. A connecting plate 604 is fixedly connected to the upper surface of the sliders 605. A screw 606 is threadedly connected to the inner wall of the connecting plate 604. Two fixing plates 603 are fixedly connected to the upper surface of the connecting frame 601. The fixing plates 603 are rotatably connected to the screw 606. A fixing rod 608 is fixedly connected to one side of the connecting frame 601. A servo motor 607 is installed at the upper end of the fixing rod 608. The output end of the servo motor 607 is fixedly connected to the screw 606. A connecting rod 609 is fixedly connected to the lower surface of the sliders 605. An auxiliary frame 610 is fixedly connected to the lower end of the connecting rod 609. A connecting shaft 611 is rotatably connected to the inner wall of the auxiliary frame 610. A roller shaft 612 is fixedly connected to the arc surface of the connecting shaft 611. When it is necessary to limit the movement of plastic products, the servo motor 607 can be started, causing its output end to drive the screw 606 to rotate under the support of the fixed plate 603. Since the screw 606 is threadedly connected to the inner wall of the connecting plate 604, and the connecting plate 604 is slidably connected to the groove 602 on the inner wall of the connecting frame 601 through the slider 605, the rotation of the screw 606 will drive the two connecting plates 604 to move closer or further apart along the direction of the groove 602, thereby driving the slider 605 to move synchronously. While the slider 605 moves, the connecting rod 609 on its lower surface will drive the auxiliary frame 610 to move, so that the connecting shaft 611 rotatably connected to the inner wall of the auxiliary frame 610 and the arc-shaped roller 612 move to both sides of the plastic product. As the two auxiliary frames 610 approach each other, the roller 612 contacts the side of the plastic product. Utilizing the rotational characteristics of the roller 612, it provides lateral restraint to the plastic product, preventing lateral deviation during movement. Simultaneously, the rolling motion of the roller 612 reduces friction, ensuring smooth conveying of the plastic product and effectively improving the adaptability and stability of restraining plastic products of different sizes. The roller 612 has a circular cross-section and is made of rubber. The rubber material has a certain elasticity, providing cushioning and protection for the surface of the plastic product, preventing damage from hard contact. A limit rod 614 is fixedly connected inside the chute 602, and the limit rod 614 is slidably connected to the slider 605. The limiting rod 614 can limit the slider 605, preventing it from deviating when sliding on the inner wall of the slide rail 71, thus improving the stability of the slider 605's sliding. The roller 612 has several slots 613 evenly distributed on its arc surface. These slots 613 increase the friction between the roller 612 and the plastic product, preventing slippage and wear. The fixing rod 608 has an "L"-shaped cross-section and is made of aluminum alloy.

[0035] like Figure 1 and Figure 5 As shown, the cleaning structure 7 includes two slide rails 71, which are fixedly connected to the base 1. A movable block 75 is slidably connected to the inner wall of the slide rail 71. An auxiliary plate 76 is fixedly connected to the side of the movable block 75 away from the connecting frame 601. A lead screw 77 is threadedly connected to the inner wall of the auxiliary plate 76. The lead screw 77 abuts against the slide rail 71. A mounting plate 72 is fixedly connected to the side of the two movable blocks 75 that is close to each other. A cleaning pad 73 is fixedly connected to the lower surface of the mounting plate 72. When cleaning the surface of a plastic product is required, the moving block 75 can be slid within the slide rail 71 by loosening the screw 77 to adjust the position of the mounting plate 72 and the cleaning pad 73. After the cleaning pad 73 is aligned with the surface of the plastic product, the screw 77 is tightened to fix the moving block 75. Then, the mounting plate 72 is pushed to move the cleaning pad 73 on the surface of the plastic product. The friction of the cleaning pad 73 removes surface dust and impurities, ensuring the cleanliness of the plastic product surface before measurement and preventing stains from affecting the detection accuracy of the measuring lens 5. A slide rod 74 is fixedly connected inside the slide rail 71, and the slide rod 74 is slidably connected to the moving block 75. The slide rod 74 can limit the movement of the moving block 75 to prevent it from deviating when sliding on the inner wall of the slide rail 71. An anti-slip pad 78, which is a rubber pad, is fixedly connected to the end of the screw 77 near the slide rail 71. The anti-slip pad 78 can increase the stability of the screw 77 and the moving block 75. The friction between the slide rails 71 prevents the lead screw 77 from sliding when it is fixed to the slide rail 71.

[0036] like Figure 1 and Figure 6 As shown, the lifting structure 8 includes a placement groove 86, which is formed on the base 1. A top plate 81 is slidably connected to the inner wall of the placement groove 86. Two auxiliary grooves 84 are formed on the inner wall of the base 1. Hydraulic rods 82 are installed inside the auxiliary grooves 84, and the output end of the hydraulic rods 82 is fixedly connected to the top plate 81. When it is necessary to lift the top plate 81 after measurement, the hydraulic rods 82 can be activated. The output end of the hydraulic rods 82 drives the top plate 81 to slide upward along the inner wall of the placement groove 86, thereby lifting the top plate 81. This makes it convenient for operators to clean the surface of the top plate 81 or to pick up or put down items placed on the top plate 81, avoiding the inconvenience of bending over or reaching into the base 1 for operation, and improving the convenience and efficiency of operation. Several positioning rods 83 are fixedly connected to the lower surface of the top plate 81. Several positioning grooves 85 are formed on the inner wall of the base 1, and the positioning grooves 85 are slidably connected to the positioning rods 83. The positioning rod 83 and the positioning groove 85 can limit the top plate 81 to prevent it from shifting when sliding.

[0037] The overall working principle is as follows: when it is necessary to limit the movement of a plastic product, the servo motor 607 can be activated, causing its output end to drive the screw 606 to rotate under the support of the fixed plate 603. Since the screw 606 is threadedly connected to the inner wall of the connecting plate 604, and the connecting plate 604 is slidably connected to the slide groove 602 on the inner wall of the connecting frame 601 through the slider 605, the rotation of the screw 606 will drive the two connecting plates 604 to move closer or further apart along the direction of the slide groove 602, thereby driving the slider 605 to move synchronously. While the slider 605 moves, the connecting rod 609 on its lower surface will drive the auxiliary frame 610 to move, so that the connecting shaft 611 and the arc-shaped roller shaft 612 rotatably connected to the inner wall of the auxiliary frame 610 will move to both sides of the plastic product. As the two auxiliary frames 610 approach each other, the roller 612 will contact the side of the plastic product. Utilizing the rotational characteristics of the roller 612, it can both provide lateral limiting for the plastic product, preventing it from shifting left or right during movement, and reduce friction through the rolling of the roller 612 during movement, ensuring the smoothness of the plastic product conveying process. This effectively improves the adaptability and stability of limiting plastic products of different sizes. The rubber material has a certain elasticity, which can buffer and protect the surface of the plastic product, preventing damage to the plastic product due to hard contact. The limiting rod 614 can limit the slider 605, preventing the slider 605 from shifting when sliding on the inner wall of the slide rail 71, thus improving the stability of the slider 605 sliding. The groove 613 can increase the friction between the roller 612 and the plastic product, preventing the roller 612 from sliding between the roller and the plastic product and causing wear.

[0038] When cleaning the surface of a plastic product is required, the moving block 75 can be slid within the slide rail 71 by loosening the lead screw 77 to adjust the position of the mounting plate 72 and the cleaning pad 73. After the cleaning pad 73 is aligned with the surface of the plastic product, the lead screw 77 is tightened to fix the moving block 75. Then, the mounting plate 72 is pushed to move the cleaning pad 73 on the surface of the plastic product. The friction of the cleaning pad 73 removes surface dust and impurities, ensuring the cleanliness of the plastic product surface before measurement and preventing stains from affecting the detection accuracy of the measuring lens 5. The slide rod 74 can limit the moving block 75 to prevent it from shifting when sliding on the inner wall of the slide rail 71. The anti-slip pad 78 can increase the friction between the lead screw 77 and the slide rail 71, preventing slippage when the lead screw 77 is in contact with the slide rail 71.

[0039] When it is necessary to lift the top plate 81 after measurement, the hydraulic rod 82 can be activated. The output end of the hydraulic rod 82 drives the top plate 81 to slide upward along the inner wall of the placement groove 86, thereby lifting the top plate 81. This makes it convenient for operators to clean the surface of the top plate 81 or to pick up and put down items placed on the top plate 81. This avoids the inconvenience of manually bending over or reaching into the machine base 1, and improves the convenience and efficiency of operation. The positioning rod 83 and the positioning groove 85 can limit the top plate 81 to prevent the top plate 81 from shifting when sliding.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A dimensional measuring device for inspecting finished plastic parts, comprising a base (1) and a limiting structure (6), characterized in that: Movable components (2) are installed on both sides of the base (1). A bracket (3) is installed on the upper surface of the movable component (2). A measuring component (4) is installed on the upper end of the bracket (3). A measuring lens (5) is installed on the lower end of the measuring component (4). A limiting structure (6) is provided on the upper surface of the base (1). The limiting structure (6) includes a connecting frame (601). The connecting frame (601) is fixedly connected to the base (1). Two sliding grooves (602) are opened on the inner wall of the connecting frame (601). Two sliders (605) are slidably connected to the inner wall of the sliding grooves (602). A connecting plate (604) is fixedly connected to the upper surface of the sliders (605). A screw thread is threaded to the inner wall of the connecting plate (604). The upper surface of the connecting frame (601) is fixedly connected to two fixing plates (603), the fixing plates (603) are rotatably connected to the screw (606), a fixing rod (608) is fixedly connected to one side of the connecting frame (601), a servo motor (607) is installed at the upper end of the fixing rod (608), the output end of the servo motor (607) is fixedly connected to the screw (606), a connecting rod (609) is fixedly connected to the lower surface of the slider (605), an auxiliary frame (610) is fixedly connected to the lower end of the connecting rod (609), a connecting shaft (611) is rotatably connected to the inner wall of the auxiliary frame (610), and a roller shaft (612) is fixedly connected to the arc surface of the connecting shaft (611).

2. The dimensional measuring device for inspecting finished plastic parts according to claim 1, characterized in that: The cross-section of the roller (612) is circular, and the roller (612) is a rubber shaft.

3. The dimensional measuring device for inspecting finished plastic parts according to claim 1, characterized in that: The sliding groove (602) is internally fixedly connected to a limiting rod (614), and the limiting rod (614) is slidably connected to the slider (605).

4. The dimensional measuring device for inspecting finished plastic parts according to claim 1, characterized in that: The roller (612) has a plurality of slots (613) on its arc surface, and the plurality of slots (613) are evenly distributed on the roller (612).

5. The dimensional measuring device for inspecting finished plastic parts according to claim 1, characterized in that: The cross-section of the fixing rod (608) is "L" shaped, and the fixing rod (608) is an aluminum alloy rod.

6. The dimensional measuring device for inspecting finished plastic parts according to claim 1, characterized in that: The upper surface of the base (1) is provided with a cleaning structure (7), the cleaning structure (7) includes two slide rails (71), the two slide rails (71) are fixedly connected to the base (1), the inner wall of the slide rails (71) is slidably connected with a moving block (75), the side of the moving block (75) away from the connecting frame (601) is fixedly connected with an auxiliary plate (76), the inner wall of the auxiliary plate (76) is threadedly connected with a lead screw (77), the lead screw (77) abuts against the slide rail (71), the side of the two moving blocks (75) that are close to each other is fixedly connected with an mounting plate (72), the lower surface of the mounting plate (72) is fixedly connected with a cleaning pad (73).

7. A dimensional measuring device for inspecting finished plastic parts according to claim 6, characterized in that: The slide rail (71) is internally fixedly connected to a slide rod (74), which is slidably connected to the moving block (75).

8. A dimensional measuring device for inspecting finished plastic parts according to claim 6, characterized in that: The lead screw (77) is fixedly connected to an anti-slip pad (78) near the slide rail (71), and the anti-slip pad (78) is a rubber pad.

9. A dimensional measuring device for inspecting finished plastic parts according to claim 1, characterized in that: The inner wall of the base (1) is provided with a lifting structure (8), the lifting structure (8) includes a placement groove (86), the placement groove (86) is opened on the base (1), the inner wall of the placement groove (86) is slidably connected to a top plate (81), the inner wall of the base (1) is provided with two auxiliary grooves (84), the auxiliary grooves (84) are installed with hydraulic rods (82), and the output end of the hydraulic rods (82) is fixedly connected to the top plate (81).

10. A dimensional measuring device for inspecting finished plastic parts according to claim 9, characterized in that: The lower surface of the top plate (81) is fixedly connected with several positioning rods (83), and the inner wall of the base (1) is provided with several positioning grooves (85), which are slidably connected to the positioning rods (83).

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