A device for detecting a virtual weld of a bottle cap

Abstract

The utility model provides a kind of bottle cap false welding detection device, it is related to detection device technology, specifically discloses the mounting seat of rotation setting and driving mechanism, driving mechanism is used to drive mounting seat to do circular motion on horizontal plane;Several clamping toolings are arranged around the disc surface of mounting seat, and assembly opening for fixing bottle cap is set on clamping tooling, and further include the adsorption mechanism for adsorbing bottle cap along vertical direction movement, the adsorption end of adsorption mechanism is coaxial with the assembly opening in any one clamping tooling, mounting seat is driven to rotate at uniform speed by servo motor, drive the cyclic operation of multiple clamping toolings distributed around, realize multi-station continuous detection, substantially reduce idle time, improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and more specifically, to a device for detecting poor welds in bottle caps. Background Technology

[0002] The sealing performance of a bottle cap is one of the core indicators for ensuring product quality and safety. If there are problems such as poor welding, misalignment, or insufficient strength when the bottle cap is assembled with its detachable mounting parts, the contents of the bottle may easily leak, oxidize and deteriorate, or even become contaminated by microorganisms, leading to a major quality incident.

[0003] Therefore, bottle cap sealing performance testing technology has become an indispensable key link in the production line. Some automated equipment uses fixed stations to apply vertical tension to the top of the bottle cap, but this requires frequent start-stop loading and unloading, and the testing cycle time does not match the production line speed, becoming a bottleneck in production capacity. In addition, testing the connection strength between the bottle cap and its detachable mounting parts by directly contacting the bottle cap with mechanical grippers or probes is prone to misjudgment due to uneven force application, and may also cause scratches on the bottle cap surface, affecting the appearance quality. Utility Model Content

[0004] The purpose of this invention is to provide a device for detecting poor welds in bottle caps, which addresses the shortcomings of existing technologies and solves the problems mentioned in the background.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a bottle cap welding defect detection device, including a rotating mounting base and a driving mechanism. The driving mechanism is used to drive the mounting base to make circular motion on a horizontal plane. Several clamping fixtures are arranged around the plate surface of the mounting base. The clamping fixtures are provided with assembly ports for fixing bottle caps. It also includes an adsorption mechanism for adsorbing bottle caps to move in the vertical direction. The adsorption end of the adsorption mechanism is coaxial with the assembly port located in any one of the clamping fixtures.

[0007] In some technical solutions of this utility model, the drive mechanism includes a frame, a drive motor is installed inside the frame, and the output end of the drive motor is connected to the mounting base for transmission.

[0008] In some technical solutions of this utility model, the adsorption mechanism includes a negative pressure device, a suction cup structure, and an adjustment structure for driving the suction cup structure to reciprocate in the vertical direction. The suction cup structure is provided with a ventilation pipe that is connected to the negative pressure device.

[0009] In some technical solutions of this utility model, the adjustment structure includes a mounting beam, a bracket is mounted on the top of the mounting beam, a push rod structure is mounted on the bracket, and the telescopic end of the push rod structure is connected to the suction cup structure.

[0010] Some technical solutions of this utility model also include a reset structure for correcting the relative position of the bottle cap placed in the assembly port.

[0011] In some technical solutions of this utility model, the reset structure includes a mounting bracket, and an arc-shaped reset component is provided on the side wall of the mounting bracket. The circle where the reset component is located is externally tangent to the circle where the assembly opening is located.

[0012] In some technical solutions of this utility model, the assembly opening is provided with an inner bevel, and the large-diameter end of the inner bevel is away from the mounting base.

[0013] In some technical solutions of this utility model, it also includes an air supply device, a purge head, and a fixed base. Several air inlets are opened on the outer side wall of the mounting base along its circumference. An exhaust hole communicating with the air inlets is opened on the inner side wall of the clamping fixture. The purge head is slidably mounted on the fixed base. A limiting spring connected to the fixed base is sleeved on the outer side wall of the purge head. A part of the purge head is embedded in the air inlet. The purge head is connected to the air supply device.

[0014] Compared with the prior art, this utility model has at least the following advantages or beneficial effects: the mounting base is driven to rotate at a constant speed by a servo motor, which drives multiple clamping fixtures distributed around it to operate in a cycle, realizing continuous multi-station detection, greatly reducing idle time and improving detection efficiency; the blowing mechanism works in conjunction with the detection process to automatically remove unqualified bottle caps, further shortening the processing cycle; the adsorption mechanism adopts quantitative negative pressure adsorption force to avoid false detection caused by overload or insufficient adsorption; the adjustment structure ensures the vertical movement of the suction cup, preventing bottle cap displacement and improving detection accuracy; the horizontal circular motion design reduces vibration interference; and the arc-shaped guide plate of the reset structure passively corrects the position of the bottle cap using the principle of geometric external tangency, ensuring that the initial state is consistent for each detection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the installation structure of the mounting base and mounting fixture of this utility model.

[0017] Figure 3 This is a schematic diagram of the installation structure of the purge head and mounting base of this utility model.

[0018] Figure 4 This is a schematic diagram of the installation structure of the drive motor in this utility model.

[0019] Reference numerals in the attached drawings: 1. Frame; 2. Mounting base; 3. Air inlet; 4. Clamping fixture; 5. Mounting beam; 6. Bracket; 7. Push rod structure; 8. Suction cup structure; 9. Bottle cap; 10. Reset component; 11. Mounting bracket; 12. Exhaust port; 13. Fixed base; 14. Limit spring; 15. Drive motor; 16. Blowing head. Detailed Implementation

[0020] 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.

[0021] Therefore, the following detailed description of the embodiments of the 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 this invention without inventive effort are within the scope of protection of this invention.

[0022] Example

[0023] This utility model provides a device for detecting poor solder joints in bottle caps, such as... Figures 1-4 As shown, the device includes a rotating mounting base 2 and a drive mechanism. The mounting base 2 is a disc-shaped plate structure. The drive mechanism drives the mounting base 2 to perform circular motion on a horizontal plane. Several clamping fixtures 4 are arranged around the disc surface of the mounting base 2. Each clamping fixture 4 has an assembly opening for fixing the bottle cap 9. Multi-station detection is achieved by utilizing the continuity of the circular motion of the mounting base 2. The device also includes an adsorption mechanism for adsorbing the bottle cap 9 as it moves vertically. The adsorption end of the adsorption mechanism is coaxial with the assembly opening located within any of the clamping fixtures 4. The adsorption mechanism applies a vertical pulling force to simulate the actual stress on the bottle cap 9, thereby detecting whether the welding performance of the detachable part at the top of the bottle cap 9 after connection meets the standards, thus achieving the purpose of detecting the sealing performance of the bottle cap 9. The working process of the above structure is as follows:

[0024] Driven by the drive mechanism, the mounting base 2 moves in a circular motion along the horizontal plane, causing multiple clamping fixtures 4 distributed around its surface to move sequentially to the designated detection position. When a clamping fixture 4 reaches directly below the adsorption mechanism, the adsorption end of the adsorption mechanism descends vertically, aligning coaxially with the assembly port of the clamping fixture 4, adsorbing and fixing the bottle cap 9. Subsequently, the adsorption mechanism moves upward, applying a vertical pulling force to the detachable part on the top of the bottle cap 9. If the bottle cap 9 and the detachable part are firmly welded, the bottle cap 9 remains connected to the detachable mounting part on its top; if the weld is weak, the detachable mounting part on the top of the bottle cap 9 is pulled away from the bottle cap 9 by the adsorption mechanism, completing the detection. Multiple clamping fixtures 4 work in cycles, reducing idle time and improving detection efficiency. The drive mechanism and adsorption mechanism work together without manual intervention, reducing labor costs. The horizontal circular motion of the mounting base 2 avoids vibration interference, ensuring detection accuracy.

[0025] The clamping fixture 4 includes a clamping plate and a limiting plate. The limiting plate is L-shaped and is connected to the clamping plate by screws. The clamping plate is fixed to the mounting base 2 by bolts, and the assembly opening is located on a horizontal section where the limiting plate and the clamping plate are parallel to each other.

[0026] In some technical solutions of this utility model, the drive mechanism includes a frame 1, which is a flat plate structure. A drive motor 15, a servo motor, is mounted on the bottom of the frame 1. The output end of the drive motor 15 is connected to the mounting base 2 via a coupling or gear set transmission, driving it to rotate at a uniform speed. The motor provides stable power and transmits the rotational motion to the mounting base 2 through mechanical transmission, ensuring the synchronicity of workstation switching.

[0027] In some technical solutions of this utility model, the adsorption mechanism includes a negative pressure device, a suction cup structure 8, and an adjustment structure for driving the suction cup structure 8 to reciprocate vertically. The negative pressure device is fixed inside the frame 1 by bolts, and the suction cup structure 8 is provided with a ventilation pipe connected to the negative pressure device. The negative pressure device (such as a vacuum pump, not shown in the figure) is connected to the suction cup structure 8 through the ventilation pipe to generate negative pressure to adsorb bottle caps 9. The adjustment structure drives the suction cup to rise and fall vertically to complete the adsorption and release actions. The negative pressure adsorption generated by the suction cup structure 8 can quantify the adsorption force, avoiding false detections caused by overload or underload. The adjustment structure adapts to bottle caps 9 of different heights, improving the versatility of the device.

[0028] In some technical solutions of this utility model, the adjustment structure includes a mounting beam 5. The mounting beam 5 can be used to distribute the force and prevent the bottle cap 9 from shifting due to the tilt of the suction cup, which would lead to inspection errors. A bracket 6 is installed on the top of the mounting beam 5, and a push rod structure 7 is installed on the bracket 6. The telescopic end of the push rod structure 7 is connected to the suction cup structure 8. The push rod structure 7, such as an electric push rod or a pneumatic cylinder, is fixed on the bracket 6. The telescopic end of the push rod structure 7 is connected to the suction cup structure 8. When the push rod extends or retracts, it drives the suction cup to move up and down. The mounting beam 5 provides rigid support to ensure that the movement trajectory is vertical. The linear movement of the push rod is converted into the vertical displacement of the suction cup. The mounting beam 5 and the bracket 6 form a stable frame to reduce offset errors.

[0029] In some technical solutions of this utility model, a reset structure is also included for correcting the relative position of the bottle cap 9 placed in the assembly port. During the inspection of the bottle cap 9, the reset structure fine-tunes the position of the bottle cap 9 within the clamping fixture 4 to ensure it is centered in the assembly port, preventing the bottle cap 9 from being misaligned and affecting the inspection. The reset structure corrects the slight displacement of the bottle cap 9 caused by the rotation of the mounting base 2 through mechanical contact or pneumatic pushing, facilitating the precise application of the suction cup structure 8 to the top of the bottle cap 9.

[0030] In some technical solutions of this utility model, the reset structure includes a mounting bracket 11, and an arc-shaped reset member 10 is provided on the side wall of the mounting bracket 11. The circle containing the reset member 10 is externally tangent to the circle containing the assembly opening. The reset member 10 ensures that the initial position of the bottle cap 9 at each station is consistent, improving the reliability of the inspection. Preferably, the reset member 10 is an arc-shaped guide plate, which is installed on the side wall of the mounting bracket 11 by screws. The reset member 10 is elastic, and its free end can deflect around the connection point between the reset member 10 and the mounting bracket 11. The arc of the reset member 10 is externally tangent to the movement trajectory of the clamping fixture 4, and its partly intrudes into the opening of the assembly port. When the clamping fixture 4 passes the reset member 10, the edge of the bottle cap 9 contacts the reset member 10. Guided by the arc-shaped reset member 10, the bottle cap 9 is automatically centered in the assembly port. It utilizes the principle of geometric external tangency to guide the bottle cap 9 back to the center position of the assembly port through the arc-shaped outer contact surface of the reset member 10, thus achieving passive reset. No additional power is required, the structure is simple and reliable, and the position correction is completed synchronously during the rotation of the workstation, saving time.

[0031] In some technical solutions of this utility model, the assembly port is provided with an inner bevel, with the large-diameter end of the inner bevel facing the mounting base 2. The inner side of the assembly port is designed as an inner bevel (trumpet-shaped structure), with the large-diameter end facing away from the outside of the mounting base 2. When the bottle cap 9 is placed in, the inner bevel guides it to slide into the center of the assembly port; when the adsorption mechanism is working, the bevel restricts the lateral movement of the bottle cap 9, and the bevel structure prevents the bottle cap 9 from accidentally detaching from the tooling during the detection process.

[0032] In some technical solutions of this utility model, an air supply device, a purge head 16, and a fixed base 13 are also included. The air supply device is not shown in the figure. Several air inlets 3 are opened along the circumference of the outer side wall of the mounting base 2. The number of air inlets 3 corresponds to the number of clamping fixtures 4. An exhaust hole 12 communicating with the air inlets 3 is opened on the inner side wall of the clamping fixture 4. The purge head 16 is slidably disposed on the fixed base 13. A limiting spring 14 connected to the fixed base 13 is sleeved on the outer side wall of the purge head 16. A portion of the purge head 16 is embedded in the air inlet 3. The purge head 16 is connected to the air supply device. The air supply equipment (such as an air compressor) injects high-pressure gas into the air inlet 3 through the purge head 16. The gas is discharged through the exhaust port 12, purging the defective bottle caps 9 in the clamping fixture 4, so that the defective bottle caps 9 can be automatically removed from the clamping fixture 4. The purge head 16 is limited by the limiting spring 14. After the mounting base 2 drives the multiple clamping fixtures 4 distributed around its disk to move to the designated detection position in sequence, the bottle caps 9 are detected. After the bottle caps 9 are detected, the mounting base 2 drives the clamping fixture 4 to rotate 45° and enter the purging area. The purge head 16 is embedded in the air inlet 3 on the clamping fixture 4 located in the purging area under the action of the limiting spring 14. When instructed, if the bottle cap 9 is found to be defective, the purge head 16 will purge the defective bottle caps 9 in the clamping fixture 4. If the bottle cap 9 is detected intact, the purge head 16 will not work. After the purge head 16 is connected to the air inlet 3, under the action of the limit spring 14, the purge head 16 and the air inlet 3 maintain a dynamic sealing contact to reduce gas leakage. A solenoid valve is also provided between the purge head 16 and the air supply equipment to facilitate timely response of the above structure.

[0033] Preferably, the mounting base 13 is fixed on the frame 1.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for detecting poor solder joints in bottle caps, characterized in that, The device includes a rotating mounting base (2) and a driving mechanism, which drives the mounting base (2) to make circular motion on a horizontal plane. Several clamping fixtures (4) are arranged around the plate surface of the mounting base (2). The clamping fixtures (4) are provided with assembly ports for fixing bottle caps (9). The device also includes an adsorption mechanism for adsorbing the bottle caps (9) to move in the vertical direction. The adsorption end of the adsorption mechanism is coaxial with the assembly port located in any one of the clamping fixtures (4).

2. The bottle cap weld defect detection device according to claim 1, characterized in that, The drive mechanism includes a frame (1), in which a drive motor (15) is installed, and the output end of the drive motor (15) is connected to the mounting base (2) for transmission.

3. A bottle cap weld defect detection device according to claim 1 or 2, characterized in that, The adsorption mechanism includes a negative pressure device, a suction cup structure (8), and an adjustment structure for driving the suction cup structure (8) to reciprocate in the vertical direction. The suction cup structure (8) is provided with a ventilation pipe that communicates with the negative pressure device.

4. The bottle cap weld defect detection device according to claim 3, characterized in that, The adjustment structure includes a mounting beam (5), a bracket (6) is mounted on the top of the mounting beam (5), a push rod structure (7) is mounted on the bracket (6), and the telescopic end of the push rod structure (7) is connected to the suction cup structure (8).

5. The bottle cap weld defect detection device according to claim 1, characterized in that, It also includes a reset structure for correcting the relative position of the bottle cap (9) placed in the assembly port.

6. The bottle cap weld defect detection device according to claim 5, characterized in that, The reset structure includes a mounting bracket (11), and an arc-shaped reset component (10) is provided on the side wall of the mounting bracket (11). The circle in which the reset component (10) is located is externally tangent to the circle in which the assembly port is located.

7. The bottle cap weld defect detection device according to claim 1, characterized in that, The assembly opening is provided with an inner bevel, and the large-diameter end of the inner bevel is away from the mounting base (2).

8. The bottle cap weld defect detection device according to claim 1, characterized in that, It also includes an air supply device, a purge head (16) and a fixed base (13). The outer side wall of the mounting base (2) is provided with several air inlets (3) along its circumference. The inner side wall of the clamping fixture (4) is provided with an exhaust hole (12) that communicates with the air inlets (3). The purge head (16) is slidably disposed on the fixed base (13). The outer side wall of the purge head (16) is fitted with a limiting spring (14) that is connected to the fixed base (13). A portion of the purge head (16) is embedded in the air inlet (3). The purge head (16) is connected to the air supply device.

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