A parallel action shearing and pressurizing ultrasonic welding tube sealing machine

Abstract

A parallel action shearing and pressurizing ultrasonic welding tube sealing machine, which relates to an ultrasonic welding tube sealing machine. The present invention is to solve the problem that the existing ultrasonic copper tube shearing and sealing machine is difficult to ensure the welding quality due to the rotation of the upper and lower cutting dies during the relative movement, and the sensor detection error is amplified by the mechanical structure, which reduces the measurement accuracy. The present invention includes a cover shell assembly, an ultrasonic component, a pneumatic component, a bottom mold bracket, a bottom mold and a lifting roller; the ultrasonic component is installed in the upper part of the cover shell assembly, the pneumatic component is installed in the lower part of the cover shell assembly, the bottom mold bracket is arranged below the ultrasonic component, the front end of the pneumatic component is connected to the lower surface of the bottom mold bracket through the lifting roller, the bottom mold is installed on the bottom mold bracket, and the bottom mold is located below the front end of the ultrasonic component. The present invention belongs to the field of ultrasonic welding.

Description

Technical Field

[0001] The invention relates to an ultrasonic welding tube sealing machine and belongs to the field of ultrasonic welding. Background Art

[0002] The utility model patent with the publication number of CN201399677Y and the application date of May 4, 2009 discloses an ultrasonic copper tube shearing and sealing machine, specifically discloses that the ultrasonic transducer in the ultrasonic copper tube shearing and sealing machine is horizontally arranged in the housing, the positioner is in a groove-shaped structure and is connected to the housing, the upper knife die is located in the positioner groove and is connected to the ultrasonic transducer, one end of the bottom rod is connected to the housing by a pin, the other end is connected to the knife holder and the bearing is located in the groove hole of the front part of the bottom rod through the pin, the lower knife die is located on the knife holder and forms shearing and die-pressing welding with the upper knife die, the cylinder is located below the ultrasonic transducer and the piston in the cylinder is connected to one end of the slide rod, and the other end of the slide rod is inclined and is in sliding cooperation with the bearing surface. Its shortcomings are: due to the rotation of the upper and lower knife dies when they move relative to each other, it is easy to cause uneven incisions and uneven deformation of welded parts, making it difficult to ensure welding quality; and because the displacement sensor for feedback of the relative position of the upper and lower knife dies is not directly arranged on the upper and lower knife die structures, the sensor detection error is amplified by the mechanical structure, reducing the measurement accuracy. Summary of the invention

[0003] The present invention aims to solve the problem that the existing ultrasonic copper tube shearing and sealing machine is difficult to ensure the welding quality due to the rotation of the upper and lower cutting dies during the relative movement, and the sensor detection error is amplified by the mechanical structure, which reduces the measurement accuracy. A parallel action shearing and pressurizing ultrasonic welding tube sealing machine is proposed.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problems is: the present invention includes a cover shell assembly, an ultrasonic component, a pneumatic component, a bottom mold bracket, a bottom mold and a lifting roller; the ultrasonic component is installed in the upper part of the cover shell assembly, the pneumatic component is installed in the lower part of the cover shell assembly, the bottom mold bracket is arranged below the ultrasonic component, the front end of the pneumatic component is connected to the lower surface of the bottom mold bracket through the lifting roller, the bottom mold is installed on the bottom mold bracket, and the bottom mold is located below the front end of the ultrasonic component.

[0005] Furthermore, the cover shell assembly consists of a rear cover shell, a middle cover shell, an upper cover shell, a front cover shell and a lower cover shell; the rear cover shell, the middle cover shell, the upper cover shell and the front cover shell are connected in sequence from back to front, and the rear cover shell, the middle cover shell, the upper cover shell and the front cover shell are all fixed on the lower cover shell.

[0006] Furthermore, the ultrasonic component includes a piezoelectric transducer, an amplitude modulator and a welding head; the piezoelectric transducer, the amplitude modulator and the welding head are connected end to end in sequence, the welding head is located above the bottom mold, and the welding head and the bottom mold form a shear relationship.

[0007] Furthermore, the pneumatic component includes a throttle jet valve, a pneumatic solenoid valve, an air source valve block and a cylinder, and a trapezoidal cylinder push rod; the throttle jet valve and the pneumatic solenoid valve are installed side by side at the rear of the upper surface of the air source valve block, the cylinder is installed at the front of the upper surface of the air source valve block, and the trapezoidal cylinder push rod is fixedly connected to the piston of the cylinder.

[0008] Furthermore, the present invention also includes a guide roller, which is rollingly connected to the lower cover shell and abuts against the lower surface of the trapezoidal cylinder top rod.

[0009] Furthermore, the present invention also includes two sliding guide rails; the two sliding guide rails are symmetrically installed on both sides of the bottom mold bracket, each sliding guide rail includes a slider and a guide rail, the guide rail is fixed on the lower cover shell, the slider is slidably connected to the guide rail, and the bottom mold bracket is fixedly connected to the slider.

[0010] Furthermore, the present invention also includes a return spring; the upper end of the return spring abuts against the lower surface of the upper cover shell, and the lower end of the return spring abuts against the upper surface of the bottom mold support.

[0011] Furthermore, the present invention also includes an adjusting bolt; the adjusting bolt is inserted into the bottom mold bracket from bottom to top, and the adjusting bolt is threadedly connected to the bottom mold bracket.

[0012] Furthermore, the present invention also includes a sensor limiter and a displacement sensor; the displacement sensor includes a displacement sensor slide rod and a displacement sensor body, the displacement sensor body is fixedly installed on the lower cover shell, the bottom mold bracket is connected to the slide rod through the sensor limiter, the upper end of the displacement sensor slide rod is connected to the sensor limiter, and the displacement sensor slide rod is connected to the displacement sensor body.

[0013] The beneficial effects of the present invention are:

[0014] 1. The bottom mold of the present invention moves vertically upward under the drive of the bottom mold bracket, so that the welding head and the bottom mold can always move relatively parallel during shearing and welding, ensuring that the incision of the copper tube after shearing is flat and symmetrical and the deformation thickness of the welding point of the copper tube after pressurized welding is uniform, thereby ensuring the welding quality;

[0015] 2. The displacement sensor for feedback of the welding head and the bottom mold of the present invention is arranged between the sensor stopper fixed to the bottom mold bracket and the lower cover shell, which can directly measure the relative position of the welding head and the bottom mold, avoiding the increase of error due to motion transmission, thereby ensuring the measurement accuracy and improving the welding quality;

[0016] 3. The present invention is provided with a heat dissipation device under the piezoelectric transducer, which can timely cool the piezoelectric transducer and its other components to ensure that the performance of the product does not decrease after long-term operation;

[0017] 4. All external connection lines of the present invention are connected to the outside world through metal hose connectors. This arrangement can reduce the number of interfaces between the product and the outside world and simplify the connection process. At the same time, when the piezoelectric transducer needs to be replaced, the external connection lines can be disconnected or connected by disassembling the rear cover, thereby reducing the replacement time;

[0018] 5. The lower cover shell of the present invention has no lower surface and is a semi-enclosed structure. The lower surfaces of the cylinder and the gas source valve block are exposed outside the present invention. This arrangement can reduce the weight of the present invention and alleviate the workload of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the acoustic component;

[0022] Figure 4 It is a schematic diagram of the structure of the pneumatic component;

[0023] Figure 5 It is a schematic diagram of the structure of the sliding guide rail and the displacement sensor;

[0024] Figure 6 It is a schematic diagram of the structure of the circuit board. DETAILED DESCRIPTION

[0025] Specific implementation method 1: Combination Figure 1 To illustrate the present embodiment, a parallel-action shearing and pressurizing ultrasonic welding tube sealing machine described in the present embodiment includes a cover shell assembly 1, an ultrasonic component 2, a pneumatic component 3, a bottom mold bracket 4, a bottom mold 6 and a lifting roller 8; the ultrasonic component 2 is installed in the upper part of the cover shell assembly 1, the pneumatic component 3 is installed in the lower part of the cover shell assembly 1, the bottom mold bracket 4 is arranged below the ultrasonic component 2, the front end of the pneumatic component 3 is connected to the lower surface of the bottom mold bracket 4 through the lifting roller 8, the bottom mold 6 is installed on the bottom mold bracket 4, and the bottom mold 6 is located below the front end of the ultrasonic component 2.

[0026] Specific implementation method 2: Combination Figure 1 and Figure 2 To illustrate the present embodiment, a cover assembly 1 of a parallel-action shearing and pressurizing ultrasonic welding tube sealing machine described in the present embodiment is composed of a rear cover shell 1-1, a middle cover shell 1-2, an upper cover shell 1-3, a front cover shell 1-4 and a lower cover shell 1-5; the rear cover shell 1-1, the middle cover shell 1-2, the upper cover shell 1-3 and the front cover shell 1-4 are connected in sequence from back to front, and the rear cover shell 1-1, the middle cover shell 1-2, the upper cover shell 1-3 and the front cover shell 1-4 are all fixed on the lower cover shell 1-5.

[0027] In this embodiment, the lower cover shell 1-5 has no lower surface and is a semi-enclosed structure. The lower surfaces of the cylinder and the air source valve block are exposed outside the present invention. This arrangement can reduce the weight of the present invention and alleviate the workload of operators.

[0028] The middle cover shell 1-2 has no lower surface and front and rear surfaces and is a semi-enclosed structure. The lower surfaces of the cylinder 3-1 and the gas source valve block 3-3 are exposed outside the present invention and are arranged below the middle cover shell 1-2.

[0029] Other components and connection relationships are the same as those in the first specific implementation mode.

[0030] Specific implementation method three: Combination Figure 1 and Figure 3 This embodiment is described. The ultrasonic assembly 2 of the parallel action shearing and pressurizing ultrasonic welding tube sealing machine described in this embodiment includes a piezoelectric transducer 2-1, an amplitude modulator 2-2 and a welding head 2-3; the piezoelectric transducer 2-1, the amplitude modulator 2-2 and the welding head 2-3 are connected end to end in sequence, the welding head 2-3 is located above the bottom mold 6, and the welding head 2-3 forms a shearing relationship with the bottom mold 6. Other components and connection relationships are the same as those of the first specific embodiment.

[0031] Specific implementation method four: Combination Figure 1 and Figure 4 To illustrate the present embodiment, the pneumatic assembly 3 of a parallel-action shearing and pressurizing ultrasonic welding tube sealing machine described in the present embodiment comprises a throttling jet valve 3-1, a pneumatic solenoid valve 3-2, an air source valve block 3-3 and a cylinder 3-4, and a trapezoidal cylinder push rod 3-5; the throttling jet valve 3-1 and the pneumatic solenoid valve 3-2 are mounted side by side at the rear of the upper surface of the air source valve block 3-3, the cylinder 3-4 is mounted at the front of the upper surface of the air source valve block 3-3, and the trapezoidal cylinder push rod 3-5 is fixedly connected to the piston of the cylinder 3-4.

[0032] In this embodiment, the cylinder 3-4 is arranged below the amplitude modulator 2-2 and fixedly connected to the rear of the upper cover shell 1-3, the air source valve block 3-3 is fixedly connected to the rear of the cylinder 3-4, the throttling jet valve 3-1 and the pneumatic solenoid valve 3-2 are fixedly connected to the left and right sides above the air source valve block 3-3, the trapezoidal cylinder top rod 3-5 is fixedly connected to the piston rod of the cylinder 3-4, the bottom mold bracket 4 is arranged in front of the trapezoidal cylinder top rod 3-5 and is translationally connected to the inside of the upper cover shell 1-3 through the sliding guide rails 5 arranged on both sides of the inside of the upper cover shell 1-3, and the bottom mold 6 that forms a shear relationship with the welding head 2-3 is fixedly connected to the front section of the bottom mold bracket 4.

[0033] A throttling jet valve 3-1 is arranged below the piezoelectric transducer 2-1, the air source valve block 3-3 is fixedly connected to the rear of the cylinder 3-4, and the throttling jet valve 3-1 is fixedly connected to the top of the air source valve block 3-3; the throttling jet valve 3-1 is located below the piezoelectric transducer 2-1 and has a row of small holes in a direction perpendicular to the axis of the piezoelectric transducer 2-1. By controlling the throttling jet valve 3-1, the air outlet of the small holes can be adjusted, thereby controlling the heat dissipation rate of the piezoelectric transducer 2-1.

[0034] Other components and connection relationships are the same as those in the first specific implementation mode.

[0035] Specific implementation method five: Combination Figure 1 This embodiment is described. The parallel action shearing and pressurizing ultrasonic welding pipe sealing machine described in this embodiment also includes a guide roller 7, which is rollingly connected to the lower cover 1-5, and the guide roller 7 abuts against the lower surface of the trapezoidal cylinder top rod 3-5. Other components and connection relationships are the same as those of the specific embodiments one, two or four.

[0036] Specific implementation method six: Combination Figure 1 and Figure 5 To illustrate this embodiment, the parallel action shearing and pressurizing ultrasonic welding tube sealing machine described in this embodiment also includes two sliding guide rails 5; the two sliding guide rails 5 are symmetrically installed on both sides of the bottom mold bracket 4, each sliding guide rail 5 includes a slider 5-1 and a guide rail 5-2, the guide rail 5-2 is fixed on the lower cover shell 1-5, the slider 5-1 is slidably connected to the guide rail 5-2, and the bottom mold bracket 4 is fixedly connected to the slider 5-1.

[0037] In this embodiment, the guide rail 5-2 and the slider 5-1 form a translation connection in the vertical direction, the bottom mold support 4 is fixedly connected to the slider 5-1 through the sensor limiter 11, and the guide rail 5-2 and the upper cover shell 1-3 form a fixed connection.

[0038] The other components and connection relationships are the same as those in the first or second specific implementation mode.

[0039] Specific implementation method seven: Combination Figure 1 To explain this embodiment, the parallel action shearing and pressurizing ultrasonic welding tube sealing machine described in this embodiment further includes a reset spring 9; the upper end of the reset spring 9 abuts against the lower surface of the upper cover shell 1-3, and the lower end of the reset spring 9 abuts against the upper surface of the bottom mold support 4. Other components and connection relationships are the same as those of the specific embodiment one or two.

[0040] Specific implementation method eight: Combination Figure 1To explain this embodiment, the parallel action shearing and pressurizing ultrasonic welding pipe sealing machine described in this embodiment further includes an adjusting bolt 10; the adjusting bolt 10 is inserted into the bottom mold bracket 4 from bottom to top, and the adjusting bolt 10 is threadedly connected to the bottom mold bracket 4. Other components and connection relationships are the same as those of the specific embodiment 1.

[0041] Specific implementation method nine: Combination Figure 1 and Figure 5 To explain this embodiment, the parallel action shearing and pressurizing ultrasonic welding pipe sealing machine described in this embodiment also includes a sensor stopper 11 and a displacement sensor 12; the displacement sensor 12 includes a displacement sensor slide bar 12-1 and a displacement sensor body 12-2, the displacement sensor body 12-2 is fixedly installed on the lower cover 1-5, the bottom mold support 4 is connected to the slide bar 5-1 through the sensor stopper 11, the upper end of the displacement sensor slide bar 12-1 is connected to the sensor stopper 11, and the displacement sensor slide bar 12-1 is connected to the displacement sensor body 12-2. Other components and connection relationships are the same as those of the specific embodiment 6.

[0042] Specific embodiment ten: Combined with 6, this embodiment is described. This embodiment is a parallel action shearing and pressurizing ultrasonic welding tube sealing machine also includes a circuit board 13; the circuit board 13 is fixedly connected to the rear cover 1-1, and the circuit board 13 is used to control the operation of the present invention. A plurality of circular holes are opened on the circuit board 13. All circuits connected to the internal components of the present invention can pass through the circular holes on the circuit board 13 and be connected to the outside world through the metal hose connector 10 fixedly connected to the rear part of the rear cover 1-1.

[0043] How it works

[0044] When the present invention is working, the adjusting bolt 10 is first rotated according to the diameter of the copper tube to be processed to control the gap between the welding head 2-3 and the bottom die 6 to a suitable distance, the pneumatic solenoid valve 3-2 controls the cylinder to extend, the trapezoidal cylinder push rod 3-5 moves forward and pushes the lifting roller 8 to drive the bottom die bracket 4 to rise, the bottom die 6 and the welding head 2-3 are translated to each other to clamp off the copper tube to be processed, the piezoelectric transducer 2-1 generates high-frequency vibration, which is amplified by the amplitude modulator 2-2 and generates high-frequency vibration with a large amplitude at the position of the welding head 2-3, the bottom die bracket 4 drives the bottom die 6 to continue to apply pressure to the copper tube to be processed, and under the action of high-frequency vibration and pressure, the two contact surfaces of the copper tube to be processed form molecular fusion to complete the welding process.

[0045] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A parallel action shearing and pressurizing ultrasonic welding tube sealing machine, characterized in that: The parallel-action shearing and pressurizing ultrasonic welding tube sealing machine comprises a housing assembly (1), an ultrasonic component (2), a pneumatic component (3), a bottom mold support (4), a bottom mold (6) and a lifting roller (8); the ultrasonic component (2) is mounted at the upper part of the housing assembly (1), the pneumatic component (3) is mounted at the lower part of the housing assembly (1), the bottom mold support (4) is arranged below the ultrasonic component (2), the front end of the pneumatic component (3) is connected to the lower surface of the bottom mold support (4) via the lifting roller (8), the bottom mold (6) is mounted on the bottom mold support (4), and the bottom mold (6) is located below the front end of the ultrasonic component (2); The parallel-action shearing and pressurizing ultrasonic welding tube sealing machine further comprises two sliding guide rails (5); the two sliding guide rails (5) are symmetrically mounted on both sides of a bottom mold support (4); each sliding guide rail (5) comprises a slider (5-1) and a guide rail (5-2); the guide rail (5-2) is fixed on the lower cover (1-5); the slider (5-1) is slidably connected to the guide rail (5-2); and the bottom mold support (4) is fixedly connected to the slider (5-1); The parallel-action shearing and pressurizing ultrasonic welding pipe sealing machine further comprises an adjusting bolt (10); the adjusting bolt (10) is inserted into the bottom mold bracket (4) from bottom to top, and the adjusting bolt (10) is threadedly connected to the bottom mold bracket (4); The parallel action shearing and pressurizing ultrasonic welding tube sealing machine also includes a sensor stopper (11) and a displacement sensor (12); the displacement sensor (12) includes a displacement sensor slide bar (12-1) and a displacement sensor body (12-2); the displacement sensor body (12-2) is fixedly mounted on the lower cover shell (1-5); the bottom mold support (4) is connected to the slide bar (5-1) through the sensor stopper (11); the upper end of the displacement sensor slide bar (12-1) is connected to the sensor stopper (11); and the displacement sensor slide bar (12-1) is connected to the displacement sensor body (12-2).

2. The parallel action shearing and pressurizing ultrasonic welding tube sealing machine according to claim 1 is characterized in that: The housing assembly (1) is composed of a rear housing (1-1), a middle housing (1-2), an upper housing (1-3), a front housing (1-4) and a lower housing (1-5); the rear housing (1-1), the middle housing (1-2), the upper housing (1-3) and the front housing (1-4) are connected in sequence from the back to the front, and the rear housing (1-1), the middle housing (1-2), the upper housing (1-3) and the front housing (1-4) are all fixed on the lower housing (1-5).

3. The parallel action shearing and pressurizing ultrasonic welding tube sealing machine according to claim 1 is characterized in that: The ultrasonic component (2) comprises a piezoelectric transducer (2-1), an amplitude modulator (2-2) and a welding head (2-3); the piezoelectric transducer (2-1), the amplitude modulator (2-2) and the welding head (2-3) are connected end to end in sequence, the welding head (2-3) is located above the bottom mold (6), and the welding head (2-3) and the bottom mold (6) form a shear relationship.

4. The parallel action shearing and pressurizing ultrasonic welding tube sealing machine according to claim 1 is characterized in that: The pneumatic assembly (3) comprises a throttle jet valve (3-1), a pneumatic solenoid valve (3-2), an air source valve block (3-3), a cylinder (3-4), and a trapezoidal cylinder push rod (3-5); the throttle jet valve (3-1) and the pneumatic solenoid valve (3-2) are installed side by side at the rear of the upper surface of the air source valve block (3-3), the cylinder (3-4) is installed at the front of the upper surface of the air source valve block (3-3), and the trapezoidal cylinder push rod (3-5) is fixedly connected to the piston of the cylinder (3-4).

5. A parallel action shearing and pressurizing ultrasonic welding tube sealing machine according to claim 1, 2 or 4, characterized in that: The parallel-action shearing and pressurizing ultrasonic welding tube sealing machine also includes a guide roller (7), the guide roller (7) is rollingly connected to the lower cover shell (1-5), and the guide roller (7) abuts against the lower surface of the trapezoidal cylinder top rod (3-5).

6. A parallel action shearing and pressurizing ultrasonic welding tube sealing machine according to claim 1 or 2, characterized in that: The parallel-action shearing and pressurizing ultrasonic welding tube sealing machine also includes a reset spring (9); the upper end of the reset spring (9) abuts against the lower surface of the upper cover shell (1-3), and the lower end of the reset spring (9) abuts against the upper surface of the bottom mold support (4).

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