Blanking frame for inflation detection of PVC (polyvinyl chloride) rubber balls
The PVC ball immersion and air leakage detection is automatically realized by the limiting unit and ball-pulling unit of the material drop frame structure, which solves the problem of time-consuming and labor-intensive traditional manual detection, improves detection efficiency and reduces labor intensity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG ZHIHENG PLASTIC PROD CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional PVC ball inflation testing requires manual immersion in water one by one, which is time-consuming, labor-intensive, inefficient, and labor-intensive.
The material feeding frame structure includes a feeding detection cylinder, a limiting unit, and a ball-pulling unit. The limiting unit overcomes the buoyancy of the PVC ball, and the ball-pulling unit realizes intermittent plucking, thus automating the immersion detection of the ball.
The system automates the detection of leaks in PVC balls, improving detection efficiency, reducing labor intensity, and enabling streamlined operation.
Smart Images

Figure CN224202668U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PVC ball processing technology, and in particular to a dropping rack for PVC ball inflation testing. Background Technology
[0002] PVC balls are frequently used as yoga balls. After production, they need to be inflated to check for leaks. A common method is to inflate and immerse them in water to check for air bubbles. However, this common underwater inflation test requires manual pressing of each ball into a water tank at a fixed testing station. This method is time-consuming, labor-intensive, and lacks a continuous testing process, resulting in low efficiency and high labor intensity. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a material dropper for PVC ball inflation testing, which can solve the problem of traditional PVC ball testing, which uses manual immersion in water testing, which is time-consuming, labor-intensive and has a high labor intensity.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a PVC ball inflation detection dropping rack, the innovation of which is: including a dropping detection cylinder, a limiting unit and a ball-pulling unit;
[0005] The material discharge detection cylinder is a steel cage structure with a circular cross-section. The material discharge detection cylinder includes a material discharge section, a liquid immersion detection section, and a discharge section. The material discharge section, the liquid immersion detection section, and the discharge section are connected in a conductive state in sequence. The material discharge section is arranged in a vertical direction, and the bottom end of the material discharge section and the liquid immersion detection section have an arc transition.
[0006] The immersion detection section is submerged in a water tank containing detection water. The input end of the discharge section is connected to the tail end of the immersion detection section, and the output end of the discharge section extends out of the water tank from the top of the water tank.
[0007] The limiting unit is installed inside the material dropping detection cylinder and is located at the junction of the material dropping section and the liquid immersion detection section; at least one pair of the limiting units are installed on the inner wall of the material dropping detection cylinder; the limiting unit includes a limiting plate and a limiting spring; the top end of the limiting plate is horizontally hinged to the inner wall of the material dropping detection cylinder, the limiting spring is installed below the limiting plate, one end of the limiting spring is connected to the lower surface of the limiting plate, and the other end of the limiting spring is connected to the inner wall of the material dropping detection cylinder below the limiting plate; the limiting plate is in an inclined state.
[0008] The ball-pulling unit is located above the limiting unit. The ball-pulling unit drives the PVC ball in the dropping section to overcome the buoyancy of the detection water and the resistance of the limiting plate to move to the immersion detection section. The limiting spring drives the limiting plate to the initial tilted state to prevent the PVC ball from returning to the dropping section.
[0009] Furthermore, the ball-pulling unit is installed on the outer wall of the material dropping section; the ball-pulling unit includes a motor mounting plate, a drive motor, a roller guide plate, a movable fork, and a guide frame; the motor mounting plate is connected to the outer wall of the material dropping section; the motor mounting plate has a circular hole through which the output end of the drive motor passes; the drive motor is installed on the back of the motor mounting plate; the roller guide plate is installed on the front of the motor mounting plate and has a through hole in the center to accommodate the output end of the drive motor, and an annular groove is formed on the roller guide plate; a power plate is provided on the surface of the annular groove of the roller guide plate, and the power plate is connected to the output end of the drive motor, and the drive motor drives the power plate to rotate, and a limiting waist-shaped groove to accommodate the guide roller is formed on the power plate;
[0010] The guide frame includes a first guide rail, a first slider, a second guide rail, a second slider, a guide roller, and a connecting post. The first guide rail is mounted on a motor mounting plate, and the first slider cooperates with the first guide rail. A second guide rail mounting plate is provided on the first slider perpendicular to the extension direction of the first guide rail, and the second guide rail is mounted on the second guide rail mounting plate. The second slider cooperates with the second guide rail. The connecting post is parallel to the second guide rail and is fixedly mounted on the second slider. The guide roller is located on the side of the connecting post, and passes through the limiting waist-shaped groove of the power plate and is located in the annular groove of the roller guide plate. The top of the connecting post is connected to the movable shift fork. The power plate is rotated by the drive motor, thereby driving the guide roller to move along the contour of the annular groove of the roller guide plate through the limiting waist-shaped groove of the power plate. The movement trajectory of the guide roller enables the connecting post connected to the guide roller to drive the movable shift fork to form a compound motion according to the movement trajectory of the guide roller, thereby realizing the intermittent prying of the PVC ball by the movable shift fork in the material dropping section.
[0011] The advantages of this utility model are:
[0012] 1) This utility model employs a dedicated drop frame structure for immersion leak detection of PVC balls. The limiting unit is used to overcome the buoyancy of the inflated PVC balls, ensuring that each PVC ball can be immersed in the water tank for leak detection. In addition, the ball-pulling unit can intermittently move the PVC balls. Through the cooperation of the limiting unit and the ball-pulling unit, leak detection of PVC balls can be achieved without personnel contact, which greatly improves detection efficiency and reduces the labor intensity of personnel. Attached Figure Description
[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0014] Figure 1 This is a schematic diagram of the structure of a PVC ball inflation tester for this utility model.
[0015] Figure 2 This is a structural diagram of the ball-feeding unit of a PVC ball inflation testing rack according to the present invention. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0018] like Figure 1 Figure 2 The PVC ball inflation tester shown includes a dropping test cylinder 1, a limiting unit 2, and a ball-pulling unit 3.
[0019] The material discharge detection cylinder 1 is a steel cage structure with a circular cross-section. The material discharge detection cylinder 1 includes a material discharge section 11, a liquid immersion detection section 12, and a discharge section 13. The material discharge section 11, the liquid immersion detection section 12, and the discharge section 13 are connected in a conductive state in sequence. The material discharge section 11 is arranged in a vertical direction, and the bottom end of the material discharge section 11 and the liquid immersion detection section 12 form an arc transition.
[0020] The immersion detection section 12 is immersed in a water tank containing detection water. The input end of the discharge section 13 is connected to the tail end of the immersion detection section 12, and the output end of the discharge section 13 extends out of the water tank from the top of the water tank.
[0021] The limiting unit 2 is installed inside the material dropping detection cylinder 1 and is located at the junction of the material dropping section 11 and the liquid immersion detection section 12. The limiting unit 2 has at least one pair installed on the inner wall of the material dropping detection cylinder 1. The limiting unit 2 includes a limiting plate 21 and a limiting spring 22. The top end of the limiting plate 21 is horizontally hinged to the inner wall of the material dropping detection cylinder 1. The limiting spring 22 is installed below the limiting plate 21, with one end of the limiting spring 22 connected to the lower surface of the limiting plate 21 and the other end of the limiting spring 22 connected to the inner wall of the material dropping detection cylinder 1 below the limiting plate 21. The limiting plate 21 is in an inclined state.
[0022] The ball-pulling unit 3 is positioned above the limiting unit 2. The ball-pulling unit 3 drives the PVC ball in the dropping section 11 to overcome the buoyancy of the PVC ball applied by the detection water and the resistance of the limiting plate 21 and move it to the immersion detection section 12. The limiting spring 22 drives the limiting plate 21 to the initial tilted state to prevent the PVC ball from returning to the dropping section.
[0023] The ball-feeding unit 3 is installed on the outer wall of the dropping section 11. The ball-feeding unit 3 includes a motor mounting plate 31, a drive motor 32, a roller guide plate 33, a movable fork 34, and a guide frame 35. The motor mounting plate 31 is connected to the outer wall of the dropping section 11. The motor mounting plate 31 has a circular hole through which the output end of the drive motor 32 passes. The drive motor 32 is installed on the back of the motor mounting plate 31. The roller guide plate 33 is installed on the front of the motor mounting plate 31 and has a through hole in the center to accommodate the output end of the drive motor 32. The roller guide plate 33 has an annular groove. A power plate 36 is provided on the surface of the annular groove of the roller guide plate 33. The power plate 36 is connected to the output end of the drive motor 32. The drive motor 32 drives the power plate 36 to rotate. The power plate 36 has a limiting waist-shaped groove to accommodate the guide roller.
[0024] The guide frame 35 includes a first guide rail 351, a first slider 352, a second guide rail 353, a second slider 354, a guide roller 355, and a connecting post 356. The first guide rail 351 is mounted on the motor mounting plate 31, and the first slider 352 cooperates with the first guide rail 351. A second guide rail mounting plate is provided on the first slider 352 perpendicular to the extension direction of the first guide rail 351 and 353, and the second guide rail is mounted on the second guide rail mounting plate. The second slider 354 cooperates with the second guide rail 353. The connecting post 356 is parallel to the second guide rail 353 and is fixedly mounted on the second slider 354. The guide roller 355 is located on the connecting post 356. On the side of column 356, guide roller 355 passes through the limiting waist-shaped groove of power plate 36 and is set in the annular groove of roller guide plate 33. The top of connecting column 356 is connected to movable fork 34. Drive motor 32 drives power plate 36 to rotate, thereby driving guide roller 355 to move along the contour of annular groove of roller guide plate 33 through limiting waist-shaped groove of power plate 36. Through the movement trajectory of guide roller 355, connecting column 356 connected to guide roller 355 drives movable fork 34 to form a compound movement according to the movement trajectory of guide roller 355, thereby realizing that movable fork 34 intermittently moves PVC ball in the dropping section.
[0025] The working principle of this utility model is as follows: This utility model adopts a special material dropping frame structure for immersion leakage detection of PVC balls. The limiting unit is used to overcome the buoyancy of the inflated PVC balls, ensuring that the PVC balls can be immersed in the water tank one by one for leakage detection. In addition, the ball-pulling unit can realize the intermittent movement of the PVC balls. Through the cooperation of the limiting unit and the ball-pulling unit, leakage detection of PVC balls can be achieved without personnel contacting the PVC balls, which greatly improves the detection efficiency and reduces the labor intensity of personnel.
[0026] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.
Claims
1. A material dropper for testing the inflation of PVC balls, characterized in that: Includes a material discharge detection cylinder, a limiting unit, and a ball-feeding unit; The material discharge detection cylinder is a steel cage structure with a circular cross-section. The material discharge detection cylinder includes a material discharge section, a liquid immersion detection section, and a discharge section. The material discharge section, the liquid immersion detection section, and the discharge section are connected in a conductive state in sequence. The material discharge section is arranged in a vertical direction, and the bottom end of the material discharge section and the liquid immersion detection section have an arc transition. The immersion detection section is submerged in a water tank containing detection water. The input end of the discharge section is connected to the tail end of the immersion detection section, and the output end of the discharge section extends out of the water tank from the top of the water tank. The limiting unit is installed inside the material dropping detection cylinder and is located at the junction of the material dropping section and the liquid immersion detection section; at least one pair of the limiting units are installed on the inner wall of the material dropping detection cylinder; the limiting unit includes a limiting plate and a limiting spring; the top end of the limiting plate is horizontally hinged to the inner wall of the material dropping detection cylinder, the limiting spring is installed below the limiting plate, one end of the limiting spring is connected to the lower surface of the limiting plate, and the other end of the limiting spring is connected to the inner wall of the material dropping detection cylinder below the limiting plate; the limiting plate is in an inclined state. The ball-pulling unit is located above the limiting unit. The ball-pulling unit drives the PVC ball in the dropping section to overcome the buoyancy of the detection water and the resistance of the limiting plate to move to the immersion detection section. The limiting spring drives the limiting plate to the initial tilted state to prevent the PVC ball from returning to the dropping section.
2. The material dropper for testing the inflation of a PVC ball according to claim 1, characterized in that: The ball-pulling unit is installed on the outer wall of the material dropping section; the ball-pulling unit includes a motor mounting plate, a drive motor, a roller guide plate, a movable fork, and a guide frame; the motor mounting plate is connected to the outer wall of the material dropping section; the motor mounting plate has a circular hole through which the output end of the drive motor passes; the drive motor is installed on the back of the motor mounting plate; the roller guide plate is installed on the front of the motor mounting plate and has a through hole in the center to accommodate the output end of the drive motor, and an annular groove is formed on the roller guide plate; a power plate is provided on the surface of the annular groove of the roller guide plate, and the power plate is connected to the output end of the drive motor, and the drive motor drives the power plate to rotate, and a limiting waist-shaped groove to accommodate the guide roller is formed on the power plate; The guide frame includes a first guide rail, a first slider, a second guide rail, a second slider, a guide roller, and a connecting post. The first guide rail is mounted on a motor mounting plate, and the first slider cooperates with the first guide rail. A second guide rail mounting plate is provided on the first slider perpendicular to the extension direction of the first guide rail, and the second guide rail is mounted on the second guide rail mounting plate. The second slider cooperates with the second guide rail. The connecting post is parallel to the second guide rail and is fixedly mounted on the second slider. The guide roller is located on the side of the connecting post, and passes through the limiting waist-shaped groove of the power plate and is located in the annular groove of the roller guide plate. The top of the connecting post is connected to the movable shift fork. The power plate is rotated by the drive motor, thereby driving the guide roller to move along the contour of the annular groove of the roller guide plate through the limiting waist-shaped groove of the power plate. The movement trajectory of the guide roller enables the connecting post connected to the guide roller to drive the movable shift fork to form a compound motion according to the movement trajectory of the guide roller, thereby realizing the intermittent prying of the PVC ball by the movable shift fork in the material dropping section.