A cap screwing machine for testing cap screwing torque
By designing an automated capping machine, which employs a pneumatic three-jaw chuck and a torque sensor, precise torque testing of different bottle caps is achieved, solving the problem of low automation in existing devices and improving production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU THOMSON INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-07-24
AI Technical Summary
Existing cap torque testing devices are not highly automated, require manual adjustment of cap height, are inconvenient to operate and pose safety hazards, and do not support quick fixture changes or parameter adjustments, thus affecting work efficiency.
A capping machine comprising a frame, control box, capping assembly, mold assembly, lifting assembly, and bottle assembly is designed. It adopts a pneumatic three-jaw chuck and torque sensor, and achieves precise control through a motor and reducer. It supports quick replacement of the mold assembly and adapts to different bottle cap sizes and shapes.
It enables automated testing of cap torque, improves production efficiency, ensures measurement accuracy and equipment safety, reduces labor costs, and enhances the versatility and flexibility of the equipment.
Smart Images

Figure CN224548038U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automatic packaging equipment, and more specifically, to a capping machine for testing capping torque. Background Technology
[0002] With the continuous development of technology, more and more automated devices are gradually replacing manual operations. In the production of bottled liquids, capping is a crucial step. However, in actual production, the sealing force between the cap and the bottle opening varies between different batches of products, resulting in caps that are too tight or too loose. If the cap is too tight, users will need to apply a large amount of torque to open it, which is very difficult; if it is too loose, it will easily lead to poor sealing, allowing air to enter the bottle, which is not conducive to the storage of the contents and may cause leakage during transportation. Therefore, it is necessary to conduct random inspections on the production line to test the maximum torque required to open the cap, so as to adjust the relevant parameters of the capping process on the production line in a timely manner.
[0003] Existing capping torque testing devices lack sufficient automation, requiring manual adjustment of the capping height, which is inconvenient and poses safety hazards. Different products and container sizes require different clamps and settings, but existing devices do not support quick clamp changes or parameter adjustments, impacting work efficiency. Therefore, it is necessary to provide a capping machine for testing capping torque to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a capping machine for testing capping torque, overcoming the aforementioned defects in the prior art.
[0005] The technical solution to achieve the purpose of this utility model is: a capping machine for testing capping torque, comprising a frame and a control box, a capping assembly, a mold assembly, a lifting assembly, and a bottle assembly fixed on the frame; the lifting assembly is pulsatorically connected to the capping assembly and controls the lifting and lowering of the capping assembly, and both the capping assembly and the lifting assembly are electrically connected to the control box; the capping assembly includes a torque sensor and a capping part, the torque sensor detecting the torque of the capping part; the mold assembly is detachably fixed to the capping part, and the mold assembly clamps the corresponding bottle cap; the bottle assembly is located below the capping assembly and is used to fix the bottle body and align the bottle cap with the mold assembly.
[0006] Furthermore, the capping assembly includes a first motor, a reducer, and a drive shaft. The first motor is drivenly connected to the reducer, the output shaft of the reducer is fixedly connected to the drive shaft, the drive shaft is drivenly connected to the capping part, and the torque sensor is fixedly connected between the reducer and the capping part.
[0007] Furthermore, the capping part is a pneumatic three-jaw chuck.
[0008] Furthermore, the lifting assembly includes a second motor, a linear lifting track, and a slider. The second motor drives the slider to move up and down on the linear lifting track. The slider is fixed with a mounting base, and the mounting base is fixedly connected to the capping assembly.
[0009] Furthermore, the cap assembly also includes a connecting plate, on which both the torque sensor and the cap are mounted. The connecting plate is mounted on the mounting base via an elastic component.
[0010] Furthermore, the elastic component includes a spring and a spring shaft, the spring shaft is fixedly mounted on the mounting base, the spring is sleeved on the spring shaft, and the connecting plate is fixedly connected to the spring.
[0011] Furthermore, the mounting base is also provided with a second lifting slide rail and a second slider, the second slider being slidably connected to the second lifting slide rail and fixedly connected to the connecting plate.
[0012] Furthermore, the mold assembly consists of three arc segments, which are respectively fixedly connected to the three jaws of the pneumatic three-jaw chuck by bolts. The mold assembly follows the pneumatic three-jaw chuck to clamp and release the bottle cap.
[0013] By adopting the above technical solution, this utility model has the following beneficial effects:
[0014] (1) This utility model realizes the automated testing of cap torque. By changing the mold components, the torque test of various bottle caps can be realized. It is safe to use, easy to maintain, saves labor costs, and greatly improves production changeover efficiency.
[0015] (2) The present invention uses a capping assembly consisting of a first motor, a reducer and a transmission shaft to achieve precise control of the capping process. The presence of the reducer makes the torque output more stable, which is conducive to accurately measuring the tightening torque of the bottle cap.
[0016] (3) The capping part of this utility model uses a pneumatic three-jaw chuck design, which can replace different mold components as needed to adapt to bottle caps of various sizes and shapes, increasing the versatility and flexibility of the equipment.
[0017] (4) The connecting plate of this utility model is mounted on the mounting base by means of elastic components (including spring and spring shaft). This design can provide a certain buffer when encountering abnormal resistance, and prevent equipment damage or product damage caused by excessive torque.
[0018] (5) The torque sensor of this utility model is set between the reducer and the capping part, which can directly measure the actual torque applied to the cap and ensure the accuracy of the measurement results.
[0019] (6) The second lifting slide rail and the second slider of this utility model further enhance the stability and accuracy of the entire device. Attached Figure Description
[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...
[0021] Figure 1 This is a perspective view of the present invention.
[0022] Figure 2 This is a perspective view of the lifting assembly and the capping assembly of this utility model.
[0023] Figure 3 This is an exploded view of the cap assembly.
[0024] The labels in the attached diagram are as follows: 1. Frame; 2. Control box; 3. Capping assembly; 3-1. Torque sensor; 3-2. First motor; 3-3. Reducer; 3-4. Drive shaft; 3-5. Capping part; 3-6. Connecting plate; 4. Mold assembly; 5. Lifting assembly; 5-1. Second motor; 5-2. Linear lifting rail; 5-3. Slider; 5-4. Mounting base; 5-5. Spring; 5-6. Spring shaft; 5-7. Second lifting slide rail; 5-8. Second slider; 6. Bottle assembly. Detailed Implementation
[0025] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0026] 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.
[0027] 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.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0030] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.
[0031] (Example 1)
[0032] See Figure 1 and Figure 2 A capping machine for testing capping torque includes a frame 1 and a control box 2, a capping assembly 3, a mold assembly 4, a lifting assembly 5, and a bottle assembly 6 fixed on the frame 1; the lifting assembly 5 is connected to the capping assembly 3 by transmission and controls the lifting of the capping assembly 3, and both the capping assembly 3 and the lifting assembly 5 are electrically connected to the control box 2.
[0033] The capping assembly 3 includes a torque sensor 3-1, a first motor 3-2, a reducer 3-3, a drive shaft 3-4, and a capping part 3-5. The first motor 3-2 is located above the reducer 3-3 and is driven by the reducer 3-3. The output shaft of the reducer 3-3 is fixedly connected to the drive shaft 3-4, and the drive shaft 3-4 is driven by the capping part 3-5. The torque sensor 3-1 is fixedly connected between the reducer 3-3 and the capping part 3-5 for detecting torque. The torque sensor, positioned between the reducer and the capping part, can directly measure the actual torque applied to the cap, ensuring the accuracy of the measurement results.
[0034] The lifting component 5 includes a second motor 5-1, a linear lifting track 5-2 and a slider 5-3. The second motor 5-1 drives the slider 5-3 to lift and lower on the linear lifting track 5-2. An installation seat 5-4 is fixed to the slider 5-3, and the installation seat 5-4 is fixedly connected to the cap screwing component 3. The cap screwing component 3 further includes a connecting plate 3-6. Both the torque sensor 3-1 and the cap screwing part 3-5 are installed on the connecting plate 3-6. The connecting plate 3-6 is installed on the installation seat 5-4 through an elastic component. The elastic component includes a spring 5-5 and a spring shaft 5-6. The spring shaft 5-6 is fixedly installed on the installation seat 5-4. The spring 5-5 is sleeved on the spring shaft 5-6, and the connecting plate 3-6 is fixedly connected to the spring 5-5. The installation seat 5-4 is designed as a "C" shape, and the connecting seat 3-6 is designed as an "L" shape. The installation seat 5-4 further has a second lifting slide rail 5-7 and a second slider 5-8. The second slider 5-8 is slidably connected to the second lifting slide rail 5-7, and the second slider 5-8 is fixedly connected to the connecting plate 3-6. The setting of the second lifting slide rail and the second slider further enhances the stability and precision of the entire device.
[0035] Furthermore, a mold component 4 is detachably fixed to the cap screwing part. The mold component 4 clamps the corresponding bottle cap. The whole bottle component 5 is located below the cap screwing component 3 and is used to fix the bottle body and align the bottle cap with the mold component 4. The cap screwing part 3-5 is a pneumatic three-jaw chuck. The mold component 4 consists of three arc segments. The three arc segments are respectively fixedly connected to the three jaws of the pneumatic three-jaw chuck through bolts. The mold component 4 follows the pneumatic three-jaw chuck to clamp and loosen the bottle cap. The design of using a pneumatic three-jaw chuck for the cap screwing part allows different mold components to be replaced according to needs to adapt to various sizes and shapes of bottle caps, increasing the versatility and flexibility of the equipment. <000This implementation achieves automated testing of capping torque. By changing the mold assembly, torque testing of various bottle caps can be performed. It is safe to use, easy to maintain, saves labor costs, and significantly improves production changeover efficiency. The capping assembly, composed of a first motor, reducer, and drive shaft, enables precise control of the capping process. The reducer ensures smoother torque output, facilitating accurate measurement of cap tightening torque. The connecting plate is mounted on the mounting base via elastic components (including a spring and spring shaft). This design provides cushioning when encountering abnormal resistance, preventing equipment or product damage caused by excessive torque.
[0039] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A capping machine for testing capping torque, characterized in that: The system includes a frame (1) and a control box (2), a capping assembly (3), a mold assembly (4), a lifting assembly (5), and a bottle assembly (6) fixed on the frame (1). The lifting assembly (5) is connected to the capping assembly (3) and controls the lifting of the capping assembly (3). Both the capping assembly (3) and the lifting assembly (5) are electrically connected to the control box (2). The capping assembly (3) includes a torque sensor (3-1) and a capping part (3-5). The torque sensor (3-1) detects the torque of the capping part. The capping part is detachably fixed with the mold assembly (4), which clamps the corresponding bottle cap. The bottle assembly (6) is located below the capping assembly (3) and is used to fix the bottle body and align the bottle cap with the mold assembly (4).
2. A capping machine for testing capping torque according to claim 1, characterized in that: The capping assembly (3) includes a first motor (3-2), a reducer (3-3), and a drive shaft (3-4). The first motor (3-2) is connected to the reducer (3-3) in a transmission connection. The output shaft of the reducer (3-3) is fixedly connected to the drive shaft (3-4). The drive shaft (3-4) is connected to the capping part (3-5) in a transmission connection. The torque sensor (3-1) is fixedly connected between the reducer (3-3) and the capping part (3-5).
3. A capping machine for testing capping torque according to claim 2, characterized in that: The capping part (3-5) is a pneumatic three-jaw chuck.
4. A capping machine for testing capping torque according to claim 2, characterized in that: The lifting assembly (5) includes a second motor (5-1), a linear lifting rail (5-2), and a slider (5-3). The second motor (5-1) drives the slider (5-3) to move up and down on the linear lifting rail (5-2). The slider (5-3) is fixed with a mounting base (5-4), and the mounting base (5-4) is fixedly connected to the capping assembly (3).
5. A capping machine for testing capping torque according to claim 4, characterized in that: The cap assembly (3) also includes a connecting plate (3-6), the torque sensor (3-1) and the cap part (3-5) are both mounted on the connecting plate (3-6), and the connecting plate (3-6) is mounted on the mounting base (5-4) by an elastic component.
6. A capping machine for testing capping torque according to claim 5, characterized in that: The elastic component includes a spring (5-5) and a spring shaft (5-6). The spring shaft (5-6) is fixedly mounted on the mounting base (5-4). The spring (5-5) is sleeved on the spring shaft (5-6). The connecting plate (3-6) is fixedly connected to the spring (5-5).
7. A capping machine for testing capping torque according to claim 6, characterized in that: The mounting base (5-4) is also provided with a second lifting slide rail (5-7) and a second slider (5-8). The second slider (5-8) is slidably connected to the second lifting slide rail (5-7), and the second slider (5-8) is fixedly connected to the connecting plate (3-6).
8. A capping machine for testing capping torque according to claim 3, characterized in that: The mold assembly (4) consists of three arc segments, which are fixedly connected to the three jaws of the pneumatic three-jaw chuck by bolts. The mold assembly (4) follows the pneumatic three-jaw chuck to clamp and release the bottle cap.