CN216914882U

CN216914882U - Hand-held welding machine

Info

Publication number: CN216914882U
Application number: CN202220375667.XU
Authority: CN
Inventors: 吴伟; 黄霞玲
Original assignee: Dongguan Shenghe Ultrasonic Technology Co ltd
Current assignee: Dongguan Shenghe Ultrasonic Technology Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-07-08
Anticipated expiration: 2032-02-23

Abstract

The utility model belongs to the technical field of ultrasonic welding equipment, and particularly relates to a handheld welding machine, which comprises: a hand-held housing; the energy converter is accommodated in the inner cavity of the handheld shell and is connected with an external power supply through a power line; the amplitude transformer penetrates through the handheld shell, and is assembled at the front end of the energy converter; the welding head is assembled at the front end of the amplitude transformer; and the cooling copper pipe is assembled on the handheld shell and is connected with an external air compressor through a gas transmission pipe body. The handheld welding machine can quickly cool the welding head, avoids poor welding effect and equipment failure caused by overhigh temperature of the welding head, and can quickly cool a product so as to accelerate the cooling and shaping of the product, thereby reducing the processing time.

Description

Hand-held welding machine

Technical Field

The utility model belongs to the technical field of ultrasonic welding equipment, and particularly relates to a handheld welding machine.

Background

Ultrasonic welding is a process in which a high-frequency vibration wave is transmitted to the surfaces of two objects to be welded, and the surfaces of the two objects are rubbed against each other under pressure to form a fusion between molecular layers.

Ultrasonic waves, when applied to a thermoplastic contact surface, produce high frequency vibrations of several tens of thousands of times per second, which, reaching a certain amplitude, transmit ultrasonic energy through the upper weldment to the weld zone, which, because of its high acoustic resistance, produces a locally high temperature. And because the plastic has poor thermal conductivity, the plastic cannot be diffused in time and is gathered in a welding area, so that the contact surfaces of the two plastics are quickly melted, and the two plastics are fused into a whole after a certain pressure is applied.

Because ultrasonic welding machine in the use, its bonding tool can produce the heat, can lead to bonding tool temperature to be higher and higher if the heat can not in time distribute, when bonding tool temperature is too high, can lead to welding effect poor or even can arouse welding machine equipment trouble.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a handheld welding machine and aims to solve the technical problem that an ultrasonic welding machine in the prior art is poor in heat dissipation effect on a welding head.

To achieve the above object, an embodiment of the present invention provides a handheld welding machine, including:

a hand-held housing;

the energy converter is accommodated in the inner cavity of the handheld shell and is connected with an external power supply through a power line and used for converting electric energy into high-frequency mechanical vibration;

the amplitude transformer penetrates through the handheld shell, is assembled at the front end of the transducer and is used for conducting high-frequency mechanical vibration generated by the transducer and amplifying the amplitude of the mechanical vibration;

the welding head is assembled at the front end of the amplitude transformer and is used for transmitting the high-frequency mechanical vibration conducted by the amplitude transformer to a product;

and the cooling copper pipe is assembled on the handheld shell and connected with an external air compressor through a gas transmission pipe body and used for blowing out cold air to cool the welding head and the product.

Optionally, the cooling copper pipe is arranged in parallel with the welding head, the tail end of the cooling copper pipe is fixed to the front end of the handheld shell, and the front end of the cooling copper pipe is bent to point at the front end of the welding head.

Optionally, the front end of the handheld shell is provided with a cooling mounting hole in an inward concave manner, the tail end of the cooling copper pipe is provided with a cooling mounting seat in an outward convex manner, and the cooling mounting seat is matched with the cooling mounting hole; the cooling installation seat is embedded in the cooling installation hole, so that the cooling copper pipe is assembled on the handheld shell.

Optionally, a rod body assembling groove is formed in the inner wall of the front end of the handheld shell in an inwards recessed manner, a rod body installing seat is formed in the middle of the amplitude transformer in an outwards protruding manner, and the rod body installing seat is matched with the rod body assembling groove; the rod body mounting seat is embedded in the rod body assembling groove, so that the amplitude transformer is assembled on the handheld shell.

Optionally, the transducer comprises a metal rod cylinder and a piezoelectric ceramic; the metal rod column is assembled in the inner cavity of the handheld shell, the piezoelectric ceramics are fixedly connected to the tail end of the metal rod column, and the piezoelectric ceramics are connected with an external power supply through the power line.

Optionally, a cylinder assembly groove is formed in the inner wall of the middle of the handheld shell in an inward-concave manner, a cylinder mounting seat is formed in the middle of the metal rod cylinder in an outward-convex manner, and the cylinder mounting seat is matched with the cylinder assembly groove; the cylinder mounting seat is embedded in the cylinder assembling groove, so that the metal rod cylinder is assembled in the inner cavity of the handheld shell.

Optionally, electrode plates are loaded on both sides of the piezoelectric ceramic, the electrode plates include a positive electrode metal sheet and a negative electrode metal sheet which are electrically connected with the piezoelectric ceramic respectively, and the positive electrode metal sheet and the negative electrode metal sheet are connected with an external power supply through the power line respectively.

Optionally, the piezoelectric ceramic includes a plurality of ceramic vibration pieces, each of the ceramic vibration pieces is sequentially stacked and connected, and the polarities of the contact surfaces of two adjacent ceramic vibration pieces are the same.

Optionally, the handheld welding machine further comprises a conductive ring, the conductive ring is assembled in the inner cavity of the handheld shell, and the power line is arranged in the conductive ring in a penetrating mode and connected to the conductive ring in a rolling mode, so that the welding head, the amplitude transformer and the transducer cannot cause knotting of the power line in the assembling rotating process.

Optionally, a handle is arranged at the lower end of the handheld shell, and a start button electrically connected to the power line is arranged on the handle to control the electrical connection and disconnection between the transducer and an external power source.

One or more technical schemes in the handheld welding machine provided by the embodiment of the utility model at least have one of the following technical effects: when the handheld welding machine is used, the external air compressor utilizes the gas transmission pipe body to introduce cold air into the cooling copper pipe, the cold air continuously flows out of the gas transmission pipe body to the cooling copper pipe and blows to the contact surface of the welding head and the product, and the periphery of the welding head and the product is cooled, so that on one hand, the welding head can be rapidly cooled, the welding head is prevented from being poor in welding effect and causing equipment failure due to overhigh temperature, on the other hand, the product can be rapidly cooled, and further, the cooling and shaping of the product are accelerated, and the processing time is shortened.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a perspective view of a hand-held welding machine provided by an embodiment of the present invention.

FIG. 2 is a schematic diagram of a hand-held welding machine according to an embodiment of the present invention.

FIG. 3 is a fully exploded schematic view of a hand-held welder provided by an embodiment of the present invention.

Wherein, in the figures, the various reference numbers:

100. a hand-held housing; 110. cooling the mounting hole; 120. a rod body assembling groove; 130. a cylinder assembly groove; 140. a grip;

200. a transducer; 210. a metal rod cylinder; 211. a cylinder mount; 220. piezoelectric ceramics; 221. a ceramic vibrating reed; 230. an electrode sheet; 231. a positive electrode metal sheet; 232. a negative electrode metal piece;

300. an amplitude transformer; 310. a rod body mounting base;

400. a welding head;

500. cooling the copper pipe; 510. cooling the mounting seat;

600. a power line;

700. a gas delivery pipe body;

800. conducting rings;

900. the button is actuated.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention may be understood by those of ordinary skill in the art according to specific situations.

In one embodiment of the present invention, as shown in FIGS. 1-3, there is provided a hand-held welding machine comprising:

a hand-held housing 100;

the transducer 200 is accommodated in the inner cavity of the handheld shell 100, and the transducer 200 is connected with an external power supply through a power line 600 and is used for converting electric energy into high-frequency mechanical vibration;

the amplitude transformer 300, the amplitude transformer 300 is arranged on the hand-held housing 100 in a penetrating way, the amplitude transformer 300 is assembled at the front end of the transducer 200 and is used for conducting high-frequency mechanical vibration generated by the transducer 200 and amplifying the amplitude of the mechanical vibration;

a horn 400, said horn 400 being mounted to the forward end of said horn 300 for transmitting high frequency mechanical vibrations conducted by said horn 300 to a product;

and a cooling copper pipe 500, wherein the cooling copper pipe 500 is assembled on the handheld shell 100, and the cooling copper pipe 500 is connected with an external air compressor through an air transmission pipe body 700 and is used for blowing out cold air to cool the welding head and the product.

Specifically, the hand-held welding machine of the utility model cools the welding head 400 and the product by adopting an air cooling method, when in use, an external air compressor utilizes the air transmission pipe body 700 to introduce cold air into the cooling copper pipe 500, the cold air continuously flows out of the air transmission pipe body 700 to the cooling copper pipe 500 and blows towards the contact surface of the welding head 400 and the product, and the periphery of the welding head 400 and the product is cooled, so that on one hand, the welding head 400 can be rapidly cooled, the welding effect deterioration and the equipment failure caused by overhigh temperature of the welding head 400 are avoided, on the other hand, the product can be rapidly cooled, and further, the product cooling and shaping are accelerated, and the processing time is reduced.

In another embodiment of the present invention, as shown in fig. 1 to 3, the cooling copper tube 500 is disposed parallel to the welding head 400, the end of the cooling copper tube 500 is fixed to the front end of the hand-held housing 100, and the front end of the cooling copper tube 500 is bent to point to the front end of the welding head 400. Specifically, the front end of the cooling copper tube 500 is bent, so that the cold air blown by the cooling copper tube 500 can accurately reach the contact surface between the welding head 400 and the product, and the cooling efficiency is higher. And the cooling copper pipe 500 is arranged at an interval from the welding head 400, and the cooling copper pipe 500 does not directly contact with the welding head 400, so that the service life of the cooling copper pipe 500 is prolonged.

In another embodiment of the present invention, as shown in fig. 2 to 3, a cooling installation hole 110 is recessed inward at the front end of the handheld housing 100, a cooling installation seat 510 is protruding outward at the tail end of the cooling copper pipe 500, and the cooling installation seat 510 is adapted to the cooling installation hole 110; the cooling mounting seat 510 is embedded in the cooling mounting hole 110, so that the cooling copper pipe 500 is assembled on the handheld housing 100. Specifically, the size of cooling mount pad 510 with the size of cooling mounting hole 110 cooperatees, through cooling mount pad 510 with the cooperation of cooling mounting hole 110, can realize the terminal accurate, firm location of cooling copper pipe 500 is fixed the front end of handheld casing 100, greatly reduced the assembly degree of difficulty of cooling copper pipe 500 is favorable to having improved the assembly efficiency of cooling copper pipe 500 improves the assembly effect, has saved the human cost when the assembly is installed, and cooling mount pad 510 with the stable combination after cooling mounting hole 110 is connected has improved cooling copper pipe 500 with the fixed stability between the handheld casing 100.

In another embodiment of the present invention, as shown in fig. 2 to 3, a rod body assembling groove 120 is concavely formed on the inner wall of the front end of the handheld housing 100, a rod body installing seat 310 is convexly formed in the middle of the amplitude transformer 300, and the rod body installing seat 310 is adapted to the rod body assembling groove 120; the rod body mounting seat 310 is embedded in the rod body assembling groove 120, so that the amplitude transformer 300 is assembled on the handheld shell 100. Specifically, the size of the rod body mounting seat 310 is matched with the size of the rod body assembling groove 120, and through the matching of the rod body mounting seat 310 and the rod body assembling groove 120, the amplitude transformer 300 can be accurately and firmly positioned and fixed at the front end of the handheld shell 100, so that the assembly difficulty of the amplitude transformer 300 is greatly reduced, the assembly efficiency of the amplitude transformer 300 is improved, the assembly effect is improved, the labor cost during assembly and installation is saved, and the stable combination of the rod body mounting seat 310 and the rod body assembling groove 120 after connection is improved, so that the stability of fixation between the amplitude transformer 300 and the handheld shell 100 is improved.

In another embodiment of the present invention, as shown in FIGS. 2-3, the transducer 200 includes a metal rod cylinder 210 and a piezoelectric ceramic 220; the metal rod cylinder 210 is assembled in the inner cavity of the handheld housing 100, the piezoelectric ceramics 220 is fixedly connected to the tail end of the metal rod cylinder 210, and the piezoelectric ceramics 220 is connected with an external power supply through the power line 600. Specifically, the piezoelectric ceramic 220 is connected to an external power source to convert electrical energy into high-frequency mechanical vibration, and drives the metal rod cylinder 210 to synchronously generate high-frequency mechanical vibration, the amplitude of the mechanical vibration is amplified by the amplitude transformer 300, and then the amplified mechanical vibration is further transmitted to the welding head 400, the high-frequency mechanical vibration is effectively transmitted to a product under the contact between the welding head 400 and the product, and in the area, the vibration energy caused by the high-frequency mechanical vibration is converted into heat energy in a friction mode, so that the product is melted and connected, and therefore, the piezoelectric ceramic can be used for spot welding, rivet welding and puncture welding of automotive upholsteries, and various plastic types such as processing of folder multilayer inner pages, multilayer vamp fixing and shaping, and the like, and can also be used for public facility repair of some plastic types, and has a wide application range.

In another embodiment of the present invention, as shown in fig. 2 to 3, a cylinder mounting groove 130 is concavely formed in the middle inner wall of the handheld housing 100, a cylinder mounting seat 211 is convexly formed in the middle of the metal rod cylinder 210, and the cylinder mounting seat 211 is adapted to the cylinder mounting groove 130; the cylinder mounting seat 211 is embedded in the cylinder mounting groove 130, so that the metal rod cylinder 210 is mounted in the inner cavity of the handheld housing 100. Specifically, the size of metal pole cylinder 210 with the size of cylinder assembly groove 130 cooperatees, through cylinder mount pad 211 with the cooperation of cylinder assembly groove 130 can be realized the accurate, firm location of metal pole cylinder 210 is fixed the inner chamber of handheld casing 100, greatly reduced the assembly degree of difficulty of metal pole cylinder 210 is favorable to having improved the assembly efficiency of metal pole cylinder 210 improves the assembly effect, the human cost when having saved the erection joint, and cylinder mount pad 211 with the stable combination after cylinder assembly groove 130 is connected has improved metal pole cylinder 210 with fixed stability between the handheld casing 100.

In another embodiment of the present invention, as shown in fig. 2 to 3, electrode pads 230 are loaded on both sides of the piezoelectric ceramic 220, the electrode pads 230 include a positive electrode metal piece 231 and a negative electrode metal piece 232 electrically connected to the piezoelectric ceramic 220, respectively, and the positive electrode metal piece 231 and the negative electrode metal piece 232 are connected to an external power source through the power line 600, respectively. Specifically, in the piezoelectric ceramic 220, the positive electrode and the negative electrode of the piezoelectric ceramic 220 are formed by using the positive electrode metal piece 231 and the negative electrode metal piece 232 in an integrated structure, so that not only is the assembly efficiency improved, but also the waste and defective rate of products is reduced.

In another embodiment of the present invention, as shown in fig. 2 to 3, the piezoelectric ceramic 220 includes a plurality of ceramic vibration pieces 221, each of the ceramic vibration pieces 221 is sequentially stacked and connected, and the polarities of the contact surfaces of the adjacent ceramic vibration pieces 221 are the same. Specifically, in this embodiment, the tail end of the metal rod cylinder 210 is in contact with the two ceramic vibration plates 221, and the two ceramic vibration plates 221 are fixedly connected to the tail end of the metal rod cylinder 210.

The ceramic vibration plate 221 may be provided in two, four or six pieces.

In another embodiment of the present invention, as shown in fig. 2 to 3, the handheld welding machine further includes a conductive ring 800, the conductive ring 800 is mounted in the inner cavity of the handheld housing 100, and the power line 600 is inserted into the conductive ring 800 and is connected to the conductive ring 800 in a rolling manner, so that the welding head 400, the horn 300 and the transducer 200 do not cause knotting of the power line 600 during the mounting rotation. In particular, the conductive ring 800 can be used in any mechanical configuration that requires continuous rotation while requiring power and signals to be transmitted from a fixed position to a rotated position. The conducting ring 800 can improve system performance, simplify system structure, and avoid strain of the wire during rotation. Therefore, the welding head 400 can be rotated in real time to adjust the position when being replaced, and the conductive ring 800 effectively avoids the power line 600 from knotting or even being twisted off in the inner cavity of the handheld housing 100, and is safe and reliable.

In another embodiment of the present invention, as shown in fig. 1 to 3, a handle 140 is disposed at a lower end of the handheld housing 100, and a start button 900 electrically connected to the power line 600 is disposed on the handle 140 to control electrical connection and disconnection between the transducer 200 and an external power source. Specifically, the grip 140 is provided to be easily held by an operator during operation, so that the operation is easy and convenient. In addition, the start button 900 is arranged on the handle 140, so that when an operator holds the welding tool, the start button 900 controls the electrical connection and disconnection between the transducer 200 and an external power source according to the welding condition of a product, so as to control whether the welding head 400 works or not, and the controllability is strong.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A hand-held welding machine, comprising:

a hand-held housing;

and the cooling copper pipe is assembled on the handheld shell, and is connected with an external air compressor through a gas transmission pipe body and used for blowing out cold gas to cool the welding head and a product.

2. The hand-held welding machine of claim 1, wherein: the cooling copper pipe and the welding head are arranged in parallel, the tail end of the cooling copper pipe is fixed at the front end of the handheld shell, and the front end of the cooling copper pipe is bent to point at the front end of the welding head.

3. The hand-held welding machine of claim 2, wherein: the front end of the handheld shell is inwards provided with a cooling mounting hole in a recessed mode, the tail end of the cooling copper pipe is outwards provided with a cooling mounting seat in a protruding mode, and the cooling mounting seat is matched with the cooling mounting hole; the cooling installation seat is embedded in the cooling installation hole, so that the cooling copper pipe is assembled on the handheld shell.

4. The hand-held welding machine of claim 1, wherein: the inner wall of the front end of the handheld shell is inwards recessed to form a rod body assembling groove, the middle part of the amplitude transformer is outwards protruded to form a rod body mounting seat, and the rod body mounting seat is matched with the rod body assembling groove; the rod body mounting seat is embedded in the rod body assembling groove, so that the amplitude transformer is assembled on the handheld shell.

5. The hand-held welding machine of claim 1, wherein: the transducer comprises a metal rod cylinder and piezoelectric ceramics; the metal rod column is assembled in the inner cavity of the handheld shell, the piezoelectric ceramics are fixedly connected to the tail end of the metal rod column, and the piezoelectric ceramics are connected with an external power supply through the power line.

6. The hand-held welding machine of claim 5 wherein: the inner wall of the middle part of the handheld shell is inwards recessed to form a cylinder assembling groove, the middle part of the metal rod cylinder is outwards protruded to form a cylinder mounting seat, and the cylinder mounting seat is matched with the cylinder assembling groove; the cylinder mounting seat is embedded in the cylinder assembling groove, so that the metal rod cylinder is assembled in the inner cavity of the handheld shell.

7. The hand-held welding machine of claim 5 wherein: the piezoelectric ceramic is characterized in that electrode plates are loaded on two sides of the piezoelectric ceramic, each electrode plate comprises a positive electrode metal sheet and a negative electrode metal sheet which are electrically connected with the piezoelectric ceramic respectively, and the positive electrode metal sheets and the negative electrode metal sheets are connected with an external power supply through power lines respectively.

8. The hand-held welding machine of claim 5 wherein: the piezoelectric ceramic comprises a plurality of ceramic vibrating pieces, each ceramic vibrating piece is sequentially overlapped and connected, and the polarities of the contact surfaces of two adjacent ceramic vibrating pieces are the same.

9. The hand-held welding machine of any one of claims 1 to 8 wherein: the handheld welding machine further comprises a conducting ring, the conducting ring is assembled in the inner cavity of the handheld shell, the power line penetrates through the conducting ring and is connected to the conducting ring in a rolling mode, and therefore the welding head, the amplitude transformer and the transducer cannot cause knotting of the power line in the assembling and rotating process.

10. The hand-held welding machine of any one of claims 1 to 8 wherein: the lower end of the handheld shell is provided with a handle, and the handle is provided with a start button electrically connected with the power line so as to control the electrical connection and disconnection between the transducer and an external power supply.