Lifting mechanism of ultrasonic welding machine

Abstract

A lifting mechanism of an ultrasonic welding machine comprises a lifting assembly and a holding assembly, the lifting assembly comprises a driving air cylinder, a lifting seat and a guide rail, the driving air cylinder is arranged at the top of a rack, a floating connector is arranged at the top of the lifting seat, and the floating connector is connected with the output end of the driving air cylinder; the guide rail is arranged on the rack. The lifting base is slidably connected with the guide rail. The enclasping assembly comprises a fixed seat, and an amplitude-change pole enclasping seat is arranged at the rear section of the fixed seat; and a first node mounting seat and a second node mounting seat are arranged at the front section of the holding assembly. According to the utility model, the welding triplet is arranged by adopting the detachable enclasping assembly, so that the mounting and debugging difficulty of the welding triplet is reduced. The sliding rail is used as a guide device for lifting motion, meanwhile, the floating connector is connected with the lifting drive, the parallelism deviation and the angle deviation between the connecting shafts are automatically compensated in the motion process, and the motion precision of the lifting assembly is improved. And the limiting mechanism is adopted for carrying out area limiting on the movement of the lifting assembly, and sliding derailing caused by control errors is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic welding equipment, in particular to a lifting mechanism of an ultrasonic welding machine. Background Art

[0002] Ultrasonic welding is a technology that uses high-frequency vibration waves to transmit to the surfaces of two objects to be welded, and under pressure, the two surfaces of the objects are rubbed against each other to form a fusion between the molecular layers. Its working principle is to use an ultrasonic generator to convert 50 / 60 Hz current into 15, 20, 30 or 30 KHz electrical energy and transmit it to the welding triple group. The welding triple group consists of a transducer, a horn and a welding head. The transducer converts the high-frequency electrical energy transmitted by the ultrasonic generator into mechanical movement of the same frequency, and then transmits it to the welding head through the horn device; the welding head transmits the received vibration energy to the joint of the workpiece to be welded. In this area, the vibration energy is converted into interface friction to achieve welding.

[0003] At present, in the existing ultrasonic welding machines with welding triplex groups, the welding triplex groups are mostly directly fixed on the lifting device of the equipment frame, which makes the installation and debugging operations complicated, and the movement accuracy of the welding triplex group is difficult to guarantee when the lifting stroke is large, which in turn affects the quality of welding.

[0004] Therefore, in view of the deficiencies in the prior art, the utility model designs a lifting mechanism for an ultrasonic welding machine to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely explaining the technical solution of the utility model and facilitating the understanding of those skilled in the art. It cannot be considered that the above contents are well known to those skilled in the art simply because they are explained in the background technology of the utility model. Utility Model Content

[0006] In order to achieve the above-mentioned purpose and other related purposes, the technical solution provided by the utility model is: a lifting mechanism of an ultrasonic welding machine, the structure of which includes a lifting component and a clamping component, wherein:

[0007] The lifting assembly includes a driving cylinder, a lifting seat and a guide rail. The driving cylinder is arranged on the top of the frame. A floating joint is arranged on the top of the lifting seat. The floating joint is connected to the output end of the driving cylinder. The guide rail is arranged on the frame in a vertical direction. One side of the lifting seat is slidably connected to the guide rail in a vertical direction.

[0008] The clamping assembly includes a fixing seat detachably connected to the bottom of the lifting seat, the rear section of the fixing seat is provided with a variable amplitude clamping seat for clamping and positioning the variable amplitude rod; the front section of the fixing seat is provided with a first node mounting seat and a second node mounting seat for clamping and positioning the welding head.

[0009] The preferred technical solution is: a transformer ring is provided inside the transformer clamping seat, and the inner side of the transformer ring is connected to the outer periphery of the transformer, so as to prevent the transformer clamping seat from causing additional attenuation of the transformer vibration energy transmission.

[0010] The preferred technical solution is: both the first node mounting seat and the second node mounting seat are semicircular groove structures; the tops of the semicircular groove structures are provided with welding node pressing blocks for limiting the movement of the welding head. A node semicircular collar is provided inside the first node mounting seat, and the inner side of the node semicircular collar is connected to the outer periphery of the welding head, so as to improve the vibration energy transmission efficiency between the amplitude transformer and the welding head.

[0011] The preferred technical solution is: a dovetail-shaped mounting groove is provided at the bottom of the lifting seat, and a corresponding dovetail-shaped protrusion is provided on the fixed seat, and the dovetail-shaped protrusion can be matched and connected with the dovetail-shaped mounting groove to facilitate disassembly and assembly.

[0012] The preferred technical solution is: a baffle for positioning and fixing with the lifting seat is provided at the front end of the fixing seat.

[0013] The preferred technical solution is: a lifting limit screw is also provided at the upper end of the lifting seat, a limit seat is provided at the top of the frame at a position corresponding to the lifting limit screw, the lifting limit screw passes through the limit seat and is movably connected thereto, and a limit nut is connected to the top of the lifting limit screw.

[0014] The preferred technical solution is: a guide rail slider is provided on the lifting seat, and the guide rail slider is slidably connected to the guide rail to improve the smoothness of the lifting movement.

[0015] The preferred technical solution is: a reinforcing rib structure is provided on the lifting seat to improve the stability of the lifting seat structure.

[0016] Due to the application of the above technical solution, the lifting mechanism of an ultrasonic welding machine provided by the utility model has the following advantages over the prior art:

[0017] (1) The welding triplex group is placed using a detachable clamping assembly, which reduces the difficulty of installation and debugging of the welding triplex group.

[0018] (2) The slide rail is used as a guide device for lifting motion, which improves the stability of the motion. At the same time, it is connected to the lifting drive through a floating joint, which automatically compensates for the parallelism deviation and angle deviation between the connected axes during motion, thereby improving the motion accuracy of the lifting component.

[0019] (3) A limit mechanism is used to limit the movement of the lifting component to a certain area, effectively avoiding sliding derailment caused by control errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a structural schematic diagram of a lifting mechanism of an ultrasonic welding machine of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the lifting seat in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the clamping assembly in the utility model;

[0023] Figure 4 It is a structural schematic diagram of the welding triple group in the utility model.

[0024] In the above drawings, 100, frame; 100a, limit seat; 1, lifting assembly; 11, driving cylinder; 12, lifting seat; 12a, floating joint; 12b, dovetail mounting groove; 12c, lifting limit screw; 12d, limit nut; 12e, guide rail slider; 12f, reinforcing rib structure; 13, guide rail; 2, clamping assembly; 21, fixed seat; 21a, dovetail protrusion; 21b, baffle; 22, amplitude rod clamping seat; 22a, amplitude rod ring; 23, first node mounting seat; 23a, node semicircular ring; 24, second node mounting seat; 25, welding node pressure block; 3, welding triple group; 31, transducer; 32, amplitude rod; 33, welding head. DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example:

[0029] like Figure 1 As shown, the utility model discloses a lifting mechanism of an ultrasonic welding machine, which is used to realize high-precision free lifting of a welding triple group 3 on a frame 100, including a lifting component 1 and a clamping component 2. The main components of the utility model are described in detail below:

[0030] like Figure 1 and Figure 4 As shown, the welding triplet 3 is composed of a transducer 31 , a horn 32 and a welding head 33 .

[0031] like Figure 1 and Figure 2 As shown, the lifting assembly 1 includes a driving cylinder 11, a lifting seat 12 and a guide rail 13. The driving cylinder 11 is arranged on the top of the frame 100. The top of the lifting seat 12 is provided with a floating joint 12a and a lifting limit screw 12c. The floating joint 12a is connected to the output end of the driving cylinder 11. A limit seat 100a is arranged at the top of the frame 100 at a position corresponding to the lifting limit screw 12c. The lifting limit screw 12c passes through the limit seat 100a and is movably connected thereto. The top of the lifting limit screw 12c is connected to a limit nut 12d. A dovetail-shaped mounting groove 12b is arranged at the bottom of the lifting seat 12. A guide rail slider 12e is arranged on one side of the lifting seat 12. The guide rail slider 12e is slidably connected to the guide rail 13. The guide rail 13 is arranged on the frame 100 along the vertical direction. A reinforcing rib structure 12f is also arranged on the lifting seat 12.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the clamping assembly 2 includes a fixed seat 21, and the rear section of the fixed seat 21 is provided with a variable amplitude rod clamping seat 22; the variable amplitude rod clamping seat 22 is provided with a variable amplitude rod collar 22a, and the inner side of the variable amplitude rod collar 22a is connected to the outer periphery of the variable amplitude rod 32, which is used to clamp and position the variable amplitude rod 32. The front section of the fixed seat 21 is provided with a first node mounting seat 23 and a second node mounting seat 24, and the first node mounting seat 23 and the second node mounting seat 24 are both semicircular groove structures; the top of the semicircular groove structure is provided with a welding node pressing block 25 for limiting the movement of the welding head 33. Among them, the first node mounting seat 23 is provided with a node semicircular collar 23a, and the inner side of the node semicircular collar 23a is connected to the outer periphery of the welding head 33, which is used to clamp and position the welding head 33. The fixing seat 21 is also provided with a dovetail-shaped protrusion 21 a and a baffle 21 b . The dovetail-shaped protrusion 21 a can be matched and connected with the dovetail-shaped mounting groove 12 b ; the baffle 21 b is used for positioning and fixing with the lifting seat 12 .

[0033] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the principle of the utility model is as follows:

[0034] During installation, the welding triple group 3 is positioned and placed through the clamping component 2; after the placement is completed, the dovetail protrusion 21a at the fixed seat 21 is connected to the dovetail installation groove 12b at the bottom of the lifting seat 12, and the relative position of the fixed seat 21 and the lifting seat 12 is fixed by the baffle 21b.

[0035] When in use, the driving cylinder 11 controls the lifting seat 12 to move up and down through the floating joint 12a. During this process, the guide rail slider 12e cooperates with the guide rail 13 to ensure the stability of the movement direction. The floating joint 12a automatically compensates for the parallelism deviation and angle deviation between the connecting axes to ensure the movement accuracy of the lifting seat 12, thereby improving the movement accuracy of the welding triple group 3 and improving the welding quality and efficiency of the ultrasonic welding machine. At the same time, the lifting limit screw 12c cooperates with the limit nut 12d and the limit seat 100a to limit the movement range of the lifting seat 12 to prevent it from being separated from the guide rail 13.

[0036] In summary, the lifting mechanism of an ultrasonic welding machine disclosed in the utility model has a structure that is easy to disassemble, assemble and debug, has high up and down movement accuracy, and can freely adjust the movement position, which greatly improves the welding accuracy and efficiency of the welding machine.

[0037] The above embodiments provided by the present invention are only intended to illustrate the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A lifting mechanism of an ultrasonic welding machine, used for realizing high-precision free lifting of a welding triple group (3) on a frame (100), the welding triple group (3) consisting of a transducer (31), a horn (32) and a welding head (33), characterized in that: The lifting mechanism comprises a lifting component (1) and a clamping component (2), wherein: The lifting assembly (1) comprises a driving cylinder (11), a lifting seat (12) and a guide rail (13); the driving cylinder (11) is arranged on the top of the frame (100); a floating joint (12a) is provided on the top of the lifting seat (12); the floating joint (12a) is connected to the output end of the driving cylinder (11); the guide rail (13) is arranged on the frame (100) in a vertical direction; one side of the lifting seat (12) is slidably connected to the guide rail (13) in a vertical direction; The clamping assembly (2) comprises a fixing seat (21) detachably connected to the bottom of the lifting seat (12); the rear section of the fixing seat (21) is provided with a variable amplitude rod clamping seat (22) for clamping and positioning the variable amplitude rod (32); and the front section of the fixing seat (21) is provided with a first node mounting seat (23) and a second node mounting seat (24) for clamping and positioning the welding head (33).

2. The lifting mechanism of an ultrasonic welding machine according to claim 1, characterized in that: A horn collar (22a) is provided inside the horn clamping seat (22), and the inner side of the horn collar (22a) is connected to the outer periphery of the horn (32).

3. The lifting mechanism of an ultrasonic welding machine according to claim 1, characterized in that: The first node mounting seat (23) and the second node mounting seat (24) are both semicircular groove structures; the tops of the semicircular groove structures are both provided with welding node pressing blocks (25) for limiting the movement of the welding head (33); a node semicircular collar (23a) is provided inside the first node mounting seat (23); the inner side of the node semicircular collar (23a) is connected to the outer periphery of the welding head (33).

4. The lifting mechanism of an ultrasonic welding machine according to claim 1, characterized in that: The bottom of the lifting seat (12) is provided with a dovetail-shaped installation groove (12b), and the fixing seat (21) is provided with a corresponding dovetail-shaped protrusion (21a), and the dovetail-shaped protrusion (21a) can be matched and connected with the dovetail-shaped installation groove (12b).

5. The lifting mechanism of an ultrasonic welding machine according to claim 4, characterized in that: A baffle (21b) is provided at the front end of the fixing seat (21) for positioning and fixing with the lifting seat (12).

6. The lifting mechanism of an ultrasonic welding machine according to claim 1, characterized in that: A lifting limit screw (12c) is also provided at the upper end of the lifting seat (12); a limit seat (100a) is provided at the top of the frame (100) at a position corresponding to the lifting limit screw (12c); the lifting limit screw (12c) passes through the limit seat (10a) and is movably connected thereto; and a limit nut (12d) is connected to the top end of the lifting limit screw (12c).

7. The lifting mechanism of an ultrasonic welding machine according to claim 1, characterized in that: A guide rail slider (12e) is provided on the lifting seat (12), and the guide rail slider (12e) is slidably connected to the guide rail (13).

8. The lifting mechanism of an ultrasonic welding machine according to claim 1, characterized in that: The lifting seat (12) is provided with a reinforcing rib structure (12f).

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