Ultrasonic welding and sealing performance detection mechanism for production of instant matching cover

Abstract

The utility model provides an ultrasonic welding and sealing performance detection mechanism for production of an instant matching cover. The ultrasonic welding and sealing performance detection mechanism comprises a mounting frame, a welding unit, a conveying unit and a detection unit, the welding unit is arranged on one side of the mounting frame and is used for welding the upper cover and the lower cover to obtain an instant matching cover welding assembly; the conveying unit comprises a bearing plate and a conveying mechanism, the bearing plate is used for bearing the ready-to-assemble cover welding assembly, and the conveying mechanism is mounted on the mounting frame and connected with the bearing plate; the detection unit comprises a first cylinder, a charging connector and a second cylinder. The output shaft of the first air cylinder moves downwards to press the end face of the upper cover, the second air cylinder drives the inflation nozzle to move upwards until the inflation nozzle is in sealed connection with the end, away from the first air cylinder, of the ready-to-match cover welding assembly, the inflation nozzle inflates compressed air into the ready-to-match cover welding assembly, and after air tightness detection is completed, the first air cylinder and the second air cylinder are reset. The detection process is simple and fast, the detection efficiency can be improved, and batch production of a production line is adapted.

Description

TECHNICAL FIELD

[0001] The utility model relates to bottle cap processing technical field especially relates to a kind of ultrasonic welding and sealing detection mechanism for instant cap production. BACKGROUND

[0002] In the processing of instant cap, the upper cover and the lower cover are generally connected by ultrasonic welding, and the instant cap needs to be tested for air tightness after welding.

[0003] In the prior art, the instant cap is tested for air tightness by screwing it onto a threaded structure with the same thread as the bottle body, then injecting gas to detect air tightness, and then unscrewing the instant cap after detection. The detection efficiency is very slow and not suitable for mass production on an assembly line. SUMMARY

[0004] Therefore, the utility model provides an ultrasonic welding and sealing detection mechanism for instant cap production to solve the problem of slow detection efficiency and unsuitability for mass production on an assembly line.

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

[0006] The utility model provides an ultrasonic welding and sealing detection mechanism for instant cap production, comprising a mounting frame, a welding unit, a conveying unit and a detection unit, wherein:

[0007] The welding unit is arranged on one side of the mounting frame and is used to weld the upper cover and the lower cover of the instant cap to obtain an instant cap welding assembly;

[0008] The conveying unit comprises a bearing plate and a conveying mechanism, the bearing plate is used to bear the instant cap welding assembly, the conveying mechanism is installed on the mounting frame and connected with the bearing plate, and is used to convey the bearing plate from the welding station to the detection station;

[0009] The detection unit is installed on the other side of the mounting frame, and comprises a first air cylinder, an inflation nozzle and a second air cylinder. The first air cylinder is installed on the mounting frame, and the output shaft of the first air cylinder is used to move downward to press the end face of the upper cover of the instant cap welding assembly. The second air cylinder is installed on the mounting frame and connected with the inflation nozzle, and is used to drive the inflation nozzle to move upward until it is sealed with the end of the instant cap welding assembly away from the first air cylinder. The inflation nozzle is used to fill compressed air into the instant cap welding assembly.

[0010] On the basis of the above technical solution, preferably, the detection unit also includes a sealing ring, which is arranged at the end of the inflation nozzle away from the second cylinder, and the sealing ring is sealed between the inflation nozzle and the end of the ready-to-use cover welding assembly away from the first cylinder.

[0011] On the basis of the above technical solution, preferably, the detection unit includes an upper pressure head, which is connected to the first cylinder and is used to move downward under the drive of the first cylinder to abut against the top surface of the ready-to-fit cover welding assembly.

[0012] On the basis of the above technical solution, preferably, the area of ​​the bottom surface of the upper pressure head is greater than or equal to the area of ​​the top surface of the ready-to-cover welding assembly.

[0013] On the basis of the above technical solution, preferably, a bearing hole is provided on the bearing plate, the ready-to-fit cover welding assembly is placed in the bearing hole, and the bearing hole is a stepped hole.

[0014] On the basis of the above technical solution, preferably, the conveying mechanism adopts a conveying chain, and the two ends of the carrying plate are respectively installed on two conveying chains.

[0015] Based on the above technical solution, preferably, the welding unit includes a lifting cylinder, a guide rail, a slider, an ultrasonic generator and an ultrasonic welding head, the lifting cylinder is installed on the mounting frame and connected to the slider, the guide rail is vertically installed on the mounting frame, the slider is slidably installed on the guide rail, and the ultrasonic generator is installed on the mounting frame and connected to the ultrasonic welding head.

[0016] On the basis of the above technical solution, preferably, at least two welding units are provided, and at least two detection units are provided correspondingly.

[0017] On the basis of the above technical solution, preferably, a pressure sensor is further included, which is arranged on the inflation pipe of the inflation nozzle and is used to detect the pressure change after the inflation nozzle injects compressed air into the interior of the ready-to-fit cover welding assembly.

[0018] The ultrasonic welding and sealing detection mechanism for the production of ready-to-fit caps of the utility model has the following beneficial effects compared with the prior art:

[0019] (1) The output shaft of the first cylinder moves downward to press the end surface of the upper cover of the ready-to-fit cover welding assembly, and the second cylinder drives the inflation nozzle to move upward until it is sealed and connected with the end of the ready-to-fit cover welding assembly away from the first cylinder. The inflation nozzle fills compressed air into the interior of the ready-to-fit cover welding assembly to detect the sealing of the welding position of the upper cover and the lower cover. After the detection is completed, the first cylinder and the second cylinder retract and reset. The detection process is simple and fast, which can improve the detection efficiency and can better adapt to the batch production of the production line; and the detection unit and the welding unit are integrated on both sides of the mounting plate, which can reduce the intermediate transportation time and improve production efficiency;

[0020] (2) The sealing ring is arranged at the end of the inflation nozzle away from the second cylinder, and the sealing ring is sealed between the inflation nozzle and the end of the ready-to-fit cover welding assembly away from the first cylinder, thereby achieving a sealed connection between the inflation nozzle and the bottom of the ready-to-fit cover welding assembly, ensuring a sealing effect, and improving the accuracy of airtightness testing;

[0021] (3) The upper pressure head is connected to the first cylinder and is used to move downward under the drive of the first cylinder to abut the end surface of the upper cover of the ready-to-fit cover welding assembly, thereby increasing the contact area with the ready-to-fit cover welding assembly, thereby achieving a better pressing effect on the top of the ready-to-fit cover welding assembly, making the ready-to-fit cover welding assembly more stable during airtightness testing, and improving the stability and reliability of the device;

[0022] (4) By making the area of ​​the bottom surface of the upper pressure head greater than or equal to the area of ​​the top surface of the ready-to-fit cover welding assembly, the entire area of ​​the top surface of the ready-to-fit cover welding assembly can be subjected to downward pressure, thereby preventing the inner side of the top surface of the ready-to-fit cover welding assembly from being damaged by excessive force, thereby improving the production quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a three-dimensional diagram from one perspective of the ultrasonic welding and sealing detection mechanism for the production of ready-to-use covers of the utility model;

[0025] Figure 2 This is a three-dimensional diagram from another perspective of the ultrasonic welding and sealing detection mechanism for the production of ready-to-fit lids of the present invention.

[0026] Description of reference numerals:

[0027] 1-mounting frame, 2-welding unit, 3-conveying unit, 4-detection unit, 5-pressure sensor;

[0028] 100-just-in-time cover welding assembly;

[0029] 21-lifting cylinder, 22-guide rail, 23-sliding block, 24-ultrasonic generator, 25-ultrasonic welding head;

[0030] 31-carrier plate;

[0031] 41-first cylinder, 42-inflation nozzle, 43-second cylinder, 44-sealing ring, 45-upper pressure head. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Referring to Figure 1 and Figure 2 The embodiment of the present application provides an ultrasonic welding and sealing detection mechanism for just-in-time cover production, comprising a mounting frame 1, a welding unit 2, a conveying unit 3 and a detection unit 4, wherein:

[0034] The welding unit 2 is arranged on one side of the mounting frame 1, and is used for welding the upper cover and the lower cover of the just-in-time cover to obtain a just-in-time cover welding assembly 100;

[0035] The conveying unit 3 comprises a carrier plate 31 and a conveying mechanism, the carrier plate 31 is used for carrying the just-in-time cover welding assembly 100, the conveying mechanism is installed on the mounting frame 1 and connected with the carrier plate 31, and is used for conveying the carrier plate 31 from the welding station to the detection station, the welding station is a station for ultrasonic welding by the welding unit 2, and the detection station is a station for air tightness detection by the detection unit 4;

[0036] The detection unit 4 is installed on the other side of the mounting frame 1, and the detection unit 4 includes a first cylinder 41, an air filling nozzle 42 and a second cylinder 43. The first cylinder 41 and the second cylinder 43 are respectively located above and below the detection station. The first cylinder 41 is installed on the mounting frame 1, and the output shaft of the first cylinder 41 is used to move downward to press the end face of the upper cover of the ready-to-fit cover welding assembly 100; the second cylinder 43 is installed on the mounting frame 1 and is connected to the air filling nozzle 42, and is used to drive the air filling nozzle 42 to move upward until it is sealed with the end of the ready-to-fit cover welding assembly 100 away from the first cylinder 41; the air filling nozzle 42 is used to fill compressed air into the interior of the ready-to-fit cover welding assembly 100.

[0037] The ultrasonic welding and sealing detection mechanism for the production of ready-to-match covers proposed in this embodiment has the output shaft of the first cylinder 41 moving downward to press the top surface of the ready-to-match cover welding assembly 100, and the second cylinder 43 drives the inflation nozzle 42 to move upward until it is sealed with the bottom of the ready-to-match cover welding assembly 100, and the inflation nozzle 42 fills compressed air into the interior of the ready-to-match cover welding assembly 100 to detect the sealing of the welding position of the upper cover and the lower cover of the ready-to-match cover. After the detection is completed, the first cylinder 41 and the second cylinder 43 retract and reset. The detection process is simple and fast, which can improve the detection efficiency and can better adapt to the batch production of the production line; and the detection unit 4 and the welding unit 2 are integrated on both sides of the mounting plate, which can reduce the intermediate transportation time and improve production efficiency.

[0038] In some embodiments, the detection unit 4 further includes a sealing ring 44, which is disposed at an end of the gas injection nozzle 42 away from the second cylinder 43, and seals between the gas injection nozzle 42 and the bottom of the ready-to-fit cover welding assembly 100. Since the sealing ring 44 is disposed at the end of the gas injection nozzle 42 away from the second cylinder 43 and seals between the gas injection nozzle 42 and the end of the ready-to-fit cover welding assembly 100 away from the first cylinder 41, a sealed connection between the gas injection nozzle 42 and the bottom of the ready-to-fit cover welding assembly 100 is achieved, thereby ensuring a sealing effect and improving the accuracy of airtightness testing.

[0039] In some embodiments, the detection unit 4 includes an upper pressure head 45, which is connected to the first cylinder 41 and is configured to move downward under the drive of the first cylinder 41 to abut the top surface of the ready-to-fit-cover welding assembly 100. By connecting the upper pressure head 45 to the first cylinder 41 and being configured to move downward under the drive of the first cylinder 41 to abut the top surface of the ready-to-fit-cover welding assembly 100, the contact area with the ready-to-fit-cover welding assembly 100 is increased, thereby achieving a better pressing effect on the top of the ready-to-fit-cover welding assembly 100, making the ready-to-fit-cover welding assembly 100 more stable during airtightness testing, and improving the stability and reliability of the device.

[0040] In some embodiments, the bottom surface area of ​​the upper pressure head 45 is greater than or equal to the top surface area of ​​the ready-to-fit cover welding assembly 100. By ensuring that the bottom surface area of ​​the upper pressure head 45 is greater than or equal to the top surface area of ​​the ready-to-fit cover welding assembly 100, the entire top surface of the ready-to-fit cover welding assembly 100 is subjected to downward pressure, thereby preventing damage to the inner side of the top surface of the ready-to-fit cover welding assembly 100 due to excessive force, thereby improving product production quality.

[0041] In some embodiments, the carrier plate 31 is provided with a bearing hole, in which the ready-to-fit cover welding assembly 100 is placed. The bearing hole is a stepped hole. The bearing hole provided on the carrier plate 31 is provided with a stepped hole, and the ready-to-fit cover welding assembly 100 is placed in the bearing hole. This facilitates the downward pressure operation during ultrasonic welding and facilitates the upward movement of the second cylinder 43 from the bottom of the ready-to-fit cover welding assembly 100 to seal the bottom of the ready-to-fit cover welding assembly 100, thereby securing the ready-to-fit cover welding assembly 100 and then performing an airtightness test.

[0042] In some embodiments, the conveying mechanism utilizes a conveyor chain, with the ends of the carrier plate 31 mounted on two conveyor chains. The ends of the conveyor chains are coupled to two sprockets for transmission, and the sprockets are rotatably mounted on the mounting frame 1. The conveying mechanism utilizes a conveyor chain, with the carrier plate 31 serving as a link plate between the chain conveyor chains. This reduces the number of components and results in a more compact structure, facilitating the placement of the conveying mechanism between the welding station and the inspection station.

[0043] In some embodiments, the welding unit 2 includes a lifting cylinder 21, a guide rail 22, a slider 23, an ultrasonic generator 24, and an ultrasonic welding head 25. The lifting cylinder 21 is mounted on the mounting frame 1 and connected to the slider 23. The guide rail 22 is vertically mounted on the mounting frame 1. The slider 23 is slidably mounted on the guide rail 22. The ultrasonic generator 24 is mounted on the mounting frame 1 and connected to the ultrasonic welding head 25. The lifting cylinder 21 drives the slider 23 to slide along the guide rail 22, thereby moving the ultrasonic welding head 25 downward. At the same time, the ultrasonic generator 24 is working. When the ultrasonic welding head 25 contacts the top of the upper cover, the ultrasonic welding head generates frictional heat at the contact surface of the upper and lower covers through high-frequency vibration, thereby melting the plastic material on the contact surface of the upper and lower covers. After melting, the lifting cylinder 21 drives the ultrasonic welding head downward. The applied pressure causes the molten plastic to tightly combine, and solidifies during the cooling process to form a strong molecular chain, thereby firmly connecting the upper and lower covers together and forming a sealed space.

[0044] In some embodiments, at least two welding units 2 are provided, and at least two corresponding detection units 4 are provided. By providing at least two welding units 2 and at least two corresponding detection units 4, at least two upper and lower covers can be welded simultaneously, and at least two ready-to-assemble cover welded assemblies 100 can be inspected, thereby improving product production efficiency.

[0045] In some embodiments, the ultrasonic welding and sealing detection mechanism further includes a pressure sensor 5, which is disposed on the air pipe of the air filling nozzle 42 and is used to detect changes in pressure after the air filling nozzle 42 fills the interior of the ready-to-fit-cover welded assembly 100 with compressed air. After the air filling nozzle 42 fills the interior of the ready-to-fit-cover welded assembly 100 with compressed air, the valve on the air pipe of the air filling nozzle 42 is closed. After stabilization for a period of time, the pressure on the pressure sensor 5 is observed to see whether it drops. If it drops significantly, the airtightness of the weld between the upper and lower covers is poor, and these ready-to-fit-cover welded assemblies 100 with poor airtightness are discarded.

[0046] The working principle of the ultrasonic welding and sealing detection mechanism for the production of ready-to-match covers in this embodiment is as follows: after the upper cover and the lower cover of the ready-to-match cover are transported to the welding station, the slider 23 is driven to slide along the guide rail 22 by the lifting cylinder 21, thereby realizing the downward movement of the ultrasonic welding head 25. At the same time, the ultrasonic generator 24 is working. When the ultrasonic welding head 25 hits the top of the upper cover, the ultrasonic welding head generates friction heat on the contact surface of the upper cover and the lower cover through high-frequency vibration, thereby melting the plastic material on the contact surface of the upper cover and the lower cover. After melting, the lifting cylinder 21 drives the ultrasonic welding head downward. The applied pressure causes the molten plastic to be tightly combined, and solidifies during the cooling process to form a strong molecular chain, thereby firmly welding the upper cover and the lower cover together to form a sealed connection.

[0047] After the ultrasonic welding is completed, the lifting cylinder 21 rises, and the conveying mechanism conveys the carrying plate 31 to the inspection station;

[0048] The output shaft of the first cylinder 41 drives the upper pressure head 45 to move downward to press the end surface of the upper cover of the ready-to-fit cover welding assembly 100, and the second cylinder 43 drives the inflation nozzle 42 to move upward until the sealing ring 44 is sealed between the inflation nozzle 42 and the end of the ready-to-fit cover welding assembly 100 away from the first cylinder 41. The inflation nozzle 42 fills compressed air into the interior of the ready-to-fit cover welding assembly 100 to detect the sealing of the welding position of the upper cover and the lower cover. After the detection is completed, the first cylinder 41 and the second cylinder 43 retract and reset.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An ultrasonic welding and sealing detection mechanism for the production of ready-to-use caps, characterized in that: It comprises a mounting frame (1), a welding unit (2), a conveying unit (3) and a detection unit (4), wherein: The welding unit (2) is arranged on one side of the mounting frame (1) and is used for welding the upper cover and the lower cover of the ready-to-fit cover to obtain a ready-to-fit cover welding assembly (100); The conveying unit (3) comprises a carrying plate (31) and a conveying mechanism, wherein the carrying plate (31) is used to carry the ready-to-fit cover welding assembly (100), and the conveying mechanism is installed on the mounting frame (1) and connected to the carrying plate (31), and is used to drive the carrying plate (31) to be conveyed from the welding station to the inspection station; The detection unit (4) is mounted on the other side of the mounting frame (1), and the detection unit (4) comprises a first cylinder (41), an air filling nozzle (42) and a second cylinder (43). The first cylinder (41) is mounted on the mounting frame (1), and the output shaft of the first cylinder (41) is used to move downward to press the end face of the upper cover of the ready-to-fit cover welding assembly (100); the second cylinder (43) is mounted on the mounting frame (1) and connected to the air filling nozzle (42), and is used to drive the air filling nozzle (42) to move upward until it is sealed with an end of the ready-to-fit cover welding assembly (100) away from the first cylinder (41); the air filling nozzle (42) is used to fill compressed air into the interior of the ready-to-fit cover welding assembly (100).

2. The ultrasonic welding and sealing detection mechanism for the production of ready-to-use caps according to claim 1, characterized in that: The detection unit (4) further comprises a sealing ring (44), wherein the sealing ring (44) is arranged at one end of the inflation nozzle (42) away from the second cylinder (43), and the sealing ring (44) is sealed between the inflation nozzle (42) and one end of the ready-to-use cover welding assembly (100) away from the first cylinder (41).

3. The ultrasonic welding and sealing detection mechanism for the production of ready-to-use caps according to claim 1, characterized in that: The detection unit (4) comprises an upper pressure head (45), which is connected to the first cylinder (41) and is used to move downward under the drive of the first cylinder (41) to abut against the top surface of the ready-to-cover welding assembly (100).

4. The ultrasonic welding and sealing detection mechanism for the production of ready-to-use caps according to claim 3, characterized in that: The area of ​​the bottom surface of the upper pressure head (45) is greater than or equal to the area of ​​the top surface of the matching cover welding assembly (100).

5. The ultrasonic welding and sealing detection mechanism for the production of ready-to-use caps according to claim 1, characterized in that: The bearing plate (31) is provided with a bearing hole, the matching cover welding assembly (100) is placed in the bearing hole, and the bearing hole is a stepped hole.

6. The ultrasonic welding and sealing detection mechanism for the production of ready-to-use caps according to claim 1, characterized in that: The conveying mechanism adopts a conveying chain, and the two ends of the carrying plate (31) are respectively installed on two conveying chains.

7. The ultrasonic welding and sealing detection mechanism for the production of ready-to-use caps according to claim 1, characterized in that: The welding unit (2) comprises a lifting cylinder (21), a guide rail (22), a slider (23), an ultrasonic generator (24) and an ultrasonic welding head (25); the lifting cylinder (21) is mounted on the mounting frame (1) and connected to the slider (23); the guide rail (22) is vertically mounted on the mounting frame (1); the slider (23) is slidably mounted on the guide rail (22); and the ultrasonic generator (24) is mounted on the mounting frame (1) and connected to the ultrasonic welding head (25).

8. The ultrasonic welding and sealing detection mechanism for the production of ready-to-use caps according to claim 7, characterized in that: At least two welding units (2) are provided, and at least two detection units (4) are correspondingly provided.

9. The ultrasonic welding and sealing detection mechanism for the production of ready-to-use caps according to any one of claims 1 to 8, characterized in that: It also includes a pressure sensor (5), which is arranged on the inflation pipe of the inflation nozzle (42) and is used to detect the pressure change after the inflation nozzle (42) injects compressed air into the interior of the ready-to-fit cover welding assembly (100).

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