CN218533247U

CN218533247U - Resistance heat auxiliary welding device

Info

Publication number: CN218533247U
Application number: CN202222728005.9U
Authority: CN
Inventors: 杨世鹏
Original assignee: Shenzhen Shenfayuan Precision Technology Co ltd
Current assignee: Shenzhen Shenfayuan Precision Technology Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-02-28
Anticipated expiration: 2032-10-17

Abstract

The utility model provides a resistance heat assists welding set, include: the resistance welding electrode is composed of a first electrode and a second electrode; the welding machine frame comprises a welding head driving piece for providing ultrasound and driving a welding head to move and a welding head connecting block which is positioned at the output end of the welding head driving piece and is connected with the first welding end, and the welding head connecting block is electrically connected with the first electrode; the welding head is used for transmitting ultrasonic energy and comprises a transmitting end, a first welding end and a second welding end, and the welding head is mounted at the output end of the welding head driving part and is in sliding fit with the welding machine frame; and the welding seat assembly is used for being matched with the welding head, is arranged on the welding machine frame and comprises a welding seat and a fixing seat, the welding seat is used for bearing the foil, and the welding seat is electrically connected with the second electrode and is insulated from the welding machine frame. The utility model discloses a resistance heat is supplementary heats before ultrasonic welding, has characteristics such as low damage, low-power, high environmental protection, performance are good.

Description

Resistance heat auxiliary welding device

Technical Field

The utility model relates to the field of welding technique, concretely relates to resistance heat auxiliary welding device.

Background

The metal welding is a solid phase metal welding, namely a welding mode with welding temperature lower than a melting point, wherein high-frequency vibration energy is converted into friction energy, deformation and temperature rise among workpieces, so that the welded workpieces generate mutual plastic flow, and metal bonding among the workpieces is realized. When the thickness or the contact area of the welding workpiece is increased, high-quality welding is realized by controlling parameters such as amplitude, energy, pressure and the like. Because the friction vibration is contact friction vibration welding, the welding workpiece under the action of pressure and vibration can cause workpiece damage due to increased parameters, the service life of the welding seat of the ultrasonic welding head is shortened, and the welding power is limited by the power of the ultrasonic transducer and cannot be infinitely improved. In the traditional resistance welding, a workpiece is electrified to generate current instantly, so that the workpiece rapidly generates high temperature higher than a melting point, a nugget is formed in the welded workpiece, and the welding connection is realized. How the transformer output current loop of resistance welding is used on the ultrasonic metal spot welding machine mechanism, the heating and temperature rising of the welding product can be realized by using the welding working characteristics of resistance welding before welding the ultrasonic metal welding product, the process of completing the ultrasonic metal welding on the product is not influenced, and the temperature control of heating and temperature rising of the metal product to be heated and welded is more accurate by using the working characteristics of resistance welding. In the process of introducing resistance heat energy into ultrasonic welding, a scheme that a welding head and a resistance welding electrode are shared is used, and because the welding head vibrates integrally, the connection position of the resistance welding electrode and the welding head is improper, the frequency and the vibration characteristic of the welding head can be changed, and the defect that the amplitude output characteristic of a welding spot area no longer meets the requirement exists.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main objective is, to prior art's problem, provides a resistance heat auxiliary welding device who utilizes bonding tool pin joint electrode, aims at solving current ultrasonic welding device existence problem.

The utility model adopts the technical scheme as follows:

the utility model provides a resistance heat assists welding set includes:

a resistance welding electrode including a first electrode and a second electrode;

the welding machine frame comprises a welding head driving piece for providing ultrasound and driving a welding head to move and a welding head connecting block which is positioned at the output end of the welding head driving piece and is connected with the first welding end, and the welding head connecting block is electrically connected with the first electrode;

the welding head is used for transmitting ultrasonic energy and comprises an input end, a first welding end and a second welding end, and the welding head is arranged at the output end of the welding head driving piece and is in sliding fit with the welding machine frame;

the welding seat assembly is used for being matched with the welding head, is installed on the welding machine frame and comprises a welding seat and a fixing seat, the welding seat is used for bearing the foil, and the welding seat is electrically connected with the second electrode and is insulated from the welding machine frame.

Furthermore, the connecting block is opened flutedly towards first welding end one end, and first welding end is placed in the groove, and the connecting block is equipped with first through-hole, and first welding end is provided with the second through-hole, first electrode is used for fixing the round pin axle tip set screw in connecting block one side with electrically conductive round pin axle including the electrically conductive round pin axle that passes first through-hole and second through-hole and being located electrically conductive round pin axle one end.

Furthermore, the first electrode also comprises a first electrode connecting terminal arranged at one end of the conductive pin shaft and a first electrode connecting wire connected to the first electrode connecting terminal.

Further, the welding seat assembly further comprises a first conductive column, a second conductive column and an insulating block used for insulating the welding seat assembly and the welding machine frame, the welding seat is provided with a first column containing cavity, the first conductive column is located in the first column containing cavity, the fixing seat is provided with a second column containing cavity, the second column containing cavity is communicated with the first column containing cavity, one end of the second conductive column is located in the second column containing cavity and is in contact with the first conductive column, and the other end of the second conductive column is electrically connected with the second electrode.

Furthermore, the insulating block is installed between the welding seat and the fixed seat, the first conductive column is provided with an insulating sleeve, and the insulating sleeve is sleeved on the periphery of the first conductive column.

Further, the insulating block is installed between the fixed seat and the welding machine frame.

Further, the fixing base is provided with a spring fixing plate, a spring and an accommodating groove, the spring is located in the accommodating groove, one end of the spring is in contact with the spring fixing plate and abuts against the spring fixing plate, the other end of the spring is in contact with the second conductive column and abuts against the second conductive column, the spring fixing plate is located at an opening of the accommodating groove, and the spring fixing plate is fixedly connected with the fixing base.

Further, the fixing seat is also provided with a gasket at the spring.

Further, the second via is located at the first weld end node.

Further, still include by coolant liquid entry, oral siphon adapter, coolant liquid passageway, outlet pipe adapter and coolant liquid export concatenate the cooling system who constitutes, coolant liquid passageway sets up it is inside that the second leads electrical pillar.

According to the technical solution provided by the utility model, the utility model has the advantages of it is following: 1) The welding head pin is used for connecting the electrode at the welding end node, so that the welding head pin has the characteristics of small influence on welding head frequency and vibration characteristics and convenience in assembly; 2) The service life of the welding seat is prolonged by cooling through the cooling system; 3) Through setting up the spring for first lead electrical pillar, the contact of second lead electrical pillar is reliable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments and the prior art 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 that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a resistance heat-assisted welding device according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a resistance heat-assisted welding apparatus according to an embodiment of the present invention;

fig. 3 is a diagram of a welding head structure according to an embodiment of the present invention.

Reference numerals:

1. a resistance welding electrode; 11. a first electrode; 111. a first electrode line; 112. a first electrode connection terminal; 113. fixing screws at the end parts of the pin shafts; 114. a conductive pin shaft; 12. a second electrode; 121. a second electrode line; 122. a second electrode connection terminal;

2. a welding machine frame; 21. a welding head connecting block; 211. a first through hole; 212. a groove;

3. a welding head; 31. a transmission end; 32. a first weld end; 33. a second weld end;

4. a solder seat assembly; 41. welding a base; 411. a first column accommodating cavity; 42. a first conductive post; 43. a fixed seat; 431. a second column accommodating cavity; 432. a gasket; 433. a spring; 434. a spring fixing plate; 435. accommodating a tank; 44. a second conductive pillar;

5. a cooling system; 51. a coolant inlet; 52. coolant outlet 53, coolant channel 54, water inlet pipe adapter 55, water outlet pipe adapter.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

The terms "first," "second," "third," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between different objects and not necessarily for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The following provides a detailed description of the embodiments of the present invention with reference to the following specific examples.

Referring to fig. 1, a resistance heat-assisted welding device comprises a resistance welding electrode 1, a welding machine frame 2, a welding head 3 and a welding seat assembly 4, wherein the resistance welding electrode 1 comprises a first electrode 11 and a second electrode 12; a welder frame 2, including a welding head driving member (not shown) for providing ultrasound and driving the welding head 3 to move, and a welding head connecting block 21 located at the output end of the welding head driving member and connected with the first welding end 32, wherein the welding head connecting block 21 is electrically connected with the first electrode 11; the welding head 3 is used for transmitting ultrasonic energy and comprises a transmitting end 31, a first welding end 32 and a second welding end 33, and the welding head 3 is arranged at the output end of the welding head driving part and is in sliding fit with the welding machine frame 2; and the welding seat assembly 4 is used for being matched with the welding head 3, the welding seat assembly 4 is installed on the welding machine frame 2 and comprises a welding seat 41 and a fixed seat 43 which are used for bearing the foil, and the welding seat 41 is electrically connected with the second electrode 12 and is insulated from the welding machine frame 2.

The connecting block 21 is provided with a groove towards one end of the first welding end 32, the first welding end 32 is placed in the groove, the connecting block 21 is provided with a first through hole 211, the first welding end 32 is provided with a second through hole, the first electrode 11 comprises a conductive pin shaft 114 penetrating through the first through hole 211 and the second through hole and a pin shaft end fixing screw 113 located at one side of the connecting block 21 and used for fixing the conductive pin shaft 114 at one end of the conductive pin shaft 114, and the second through hole is located at a node of the first welding end 32.

The welding head 3 is an ultrasonic acoustic component, a triple group is formed by the ultrasonic acoustic component, the amplitude transformer and the transducer, the cylinder drives the triple group to ascend or descend to provide pressure during welding, the welding head 3 is assembled with the upper conductive electrode, and current is led into the welding head from the electrode. The assembly position can be a welding end node of the welding head, or a hole is punched or embedded on the welding head for connection.

The installation method comprises the following steps: firstly, a conductive pin shaft 114 is inserted into the connecting block 21 between the first welding end 32 and the welding head driving part, then the fixing screw 113 at the end part of the pin shaft of the conductive pin shaft 114 is screwed, then the first electrode connecting wire is fixed on the fixing screw 113 at the end part of the pin shaft, and current is input into the first electrode connecting wire 111 from the positive electrode, flows through the conductive pin shaft 114 through the fixing screw 113 at the end part of the pin shaft and then reaches the end surface at the bottom of the welding head 3. The loop flow of the current is as follows: the positive electrode output end of the resistance welding transformer system → the first electrode connecting wire 111 → the pin end fixing screw 113 → the conductive pin 114 → the welding head 3 → the to-be-welded piece → the welding seat 41 → the first conductive pillar 42 in the welding seat → the second conductive pillar 44 → the second electrode connecting terminal 122 → the second electrode connecting wire 121 → the negative electrode of the resistance welding transformer system.

Referring to fig. 3, the first electrode 11 further includes a first electrode connection terminal 112 disposed at one end of the conductive pin 114 and a first electrode connection line 111 connected to the first electrode connection terminal 112.

Referring to fig. 2, the solder socket assembly 4 further includes a first conductive pillar 42, a second conductive pillar 44, and an insulating block (not shown in the figure) for insulating the solder socket assembly 4 from the welder frame 2, so as to avoid short circuit between the positive and negative electrodes, the insulating block can be installed between the solder socket 41 and the fixing base 43, the first conductive pillar 42 is provided with an insulating sleeve, the insulating sleeve is sleeved on the periphery of the first conductive pillar 42, and the insulating block can also be installed between the fixing base 43 and the welder frame 2. The welding seat 41 is provided with a first column accommodating cavity 411, the first conductive column 42 is located in the first column accommodating cavity 411, the fixing seat 43 is provided with a second column accommodating cavity 431, the second column accommodating cavity 431 is communicated with the first column accommodating cavity 411, one end of the second conductive column 44 is located in the second column accommodating cavity 431 and is in contact with the first conductive column 42, and the other end of the second conductive column 44 is electrically connected with the second electrode 12.

The fixing base 43 is provided with a spring fixing plate 434, a spring 433, a gasket 432 and an accommodating groove 435, the spring 433 is located in the accommodating groove 435, one end of the spring 433 is in contact with and abuts against the spring fixing plate 434, the other end of the spring 433 is in contact with and abuts against the second conductive column 44, the spring fixing plate 434 is located at an opening of the accommodating groove 435, the spring fixing plate 434 is fixedly connected with the fixing base 43, and the first conductive column and the second conductive column are reliably in contact by the arrangement of the spring.

Still include by coolant liquid entry 51, water inlet pipe adapter 54, coolant liquid channel 53, coolant liquid export 52 and outlet pipe adapter 55 concatenate the cooling system 5 who constitutes, coolant liquid channel 53 sets up inside the second leads electrical pillar 44, the second leads the electrical pillar 44 inside and is done the cooling water course, reduce effectively and weld the surplus temperature that produces when 41 man-hour of seat, the life of welding seat 41 has been improved, the coolant liquid flows into water inlet pipe adapter 11 from coolant liquid entry 51, the waste temperature that welds in the seat inner electrode 9 is taken away from the flexible copper post 15 top of negative pole to the coolant pump system from delivery port 18 outflow backward flow to accomplish whole cooling work again.

The assembling step: firstly, a first conductive column 42 in the welding seat 41 is pressed into the first column accommodating cavity 411 (through overflow fit) to form a new assembly with the welding seat 41, secondly, the second conductive column 44 is placed into the second column accommodating cavity 431 of the welding seat fixing seat 43, then the gasket 432, the spring 433 and the spring fixing plate 434 are sequentially placed from the cooling liquid outlet 52, the spring fixing plate 434 and the welding seat fixing seat 43 are locked by screws, the water pipe adapter 54, the cooling liquid inlet 51 and the cooling liquid outlet 52 are screwed up to form a new assembly, and then the two assemblies are assembled into a new assembly and are fastened and connected by screws, and the second conductive column 44 is subjected to the upward jacking force of the spring 433, so that the second conductive column 44 and the first conductive column 42 in the welding seat 41 are tightly jointed to complete the conductive process.

The specific working steps are as follows:

a pre-pressing stage: through the trigger signal, the ultrasonic welding machine drives the motion mechanism, the welding head descends, and a workpiece placed on the welding seat is pressed tightly to provide continuous pressure. The welding workpiece can be made of metal materials such as copper materials, nickel materials, copper nickel plating materials, aluminum materials and the like or the combination of the materials.

And (3) resistance preheating stage of the workpiece: the pre-set parameters of resistance welder module, welding current 0 ~ 20000A, welding time 0 ~ 2000ms, accomplish after the pre-compaction stage, trigger current switches on, and the electric current passes through the upper electrode, transmits tight welding workpiece, the welding seat of clamp through the bonding tool, and the rethread lower electrode switches on, and protective insulating mechanism in addition realizes switching on of electric current return circuit. When the resistance current is conducted, the contact resistance of the welding workpiece generates heat resistance heat, and the preheating effect of the workpiece before ultrasonic welding is realized.

An ultrasonic welding stage: the parameter that ultrasonic welding machine module was preset, the welding machine can set up energy mode and time mode, parameter under the energy mode: the welding amplitude is 0-72 um, the welding energy is 0-2000J, and the welding pressure is 0-0.6 MPa; parameters in temporal mode: the welding amplitude is 0-72 um, the welding time is 0-5 s, the welding pressure is 0-0.6 MPa, when the resistance and the ultrasonic parameters are preset, the ultrasonic welding is triggered to carry out the ultrasonic welding, and the connection of the welding workpieces is realized under the friction of the ultrasonic vibration.

A pressure unloading stage: after the ultrasonic welding stage is completed, the signal triggers the ultrasonic frame motion mechanism to drive the welding head to lift. Meanwhile, secondary ultrasonic parameters are preset, so that the welding workpiece can be smoothly separated from the welding workpiece, and adhesion is prevented.

The technical solution of the present invention has been described in detail through the specific embodiments. In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same. The technical solutions described in the above embodiments can be modified or part of the technical features can be equivalently replaced by those skilled in the art; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A resistance heat assisted welding device, comprising:

a resistance welding electrode (1) including a first electrode (11) and a second electrode (12);

the welding machine frame (2) comprises a welding head driving part for providing ultrasonic waves and driving a welding head (3) to move and a welding head connecting block (21) which is positioned at the output end of the welding head driving part and is connected with a first welding end (32), wherein the welding head connecting block (21) is electrically connected with a first electrode (11);

the welding head (3) is used for transmitting ultrasonic energy and comprises an input end (31), a first welding end (32) and a second welding end (33), and the welding head (3) is arranged at the output end of the welding head driving piece and is in sliding fit with the welding machine rack (2);

the welding seat assembly (4) is used for being matched with the welding head (3), the welding seat assembly (4) is installed on the welding machine frame (2) and comprises a welding seat (41) and a fixing seat (43) which are used for bearing the foil, and the welding seat (41) is electrically connected with the second electrode (12) and is insulated from the welding machine frame (2).

2. A resistance heat assist welding apparatus as defined in claim 1, wherein said connecting block (21) is recessed toward the first welding end (32), said first welding end (32) is disposed in said recessed portion, said connecting block (21) is provided with a first through hole (211), said first welding end (32) is provided with a second through hole, and said first electrode (11) comprises a conductive pin (114) passing through said first through hole (211) and said second through hole, and a pin end fixing screw (113) disposed at an end of said conductive pin (114) for fixing said conductive pin (114) to one side of said connecting block (21).

3. A resistance heat assisted welding apparatus as claimed in claim 2, wherein the first electrode (11) further comprises a first electrode terminal (112) disposed at one end of the conductive pin (114) and a first electrode wire (111) connected to the first electrode terminal (112).

4. The resistance heat auxiliary welding device according to claim 1, wherein the welding seat assembly (4) further comprises a first conductive column (42), a second conductive column (44) and an insulating block for insulating the welding seat assembly (4) from a welding machine frame (2), the welding seat (41) is provided with a first column accommodating cavity (411), the first conductive column (42) is located in the first column accommodating cavity (411), the fixing seat (43) is provided with a second column accommodating cavity (431), the second column accommodating cavity (431) is communicated with the first column accommodating cavity (411), one end of the second conductive column (44) is located in the second column accommodating cavity (431) and is in contact with the first conductive column (42), and the other end of the second conductive column (44) is electrically connected with the second electrode (12).

5. A resistance heat assisted welding device according to claim 4, characterized in that the insulating block is mounted between the welding seat (41) and the fixed seat (43), the first conductive post (42) is provided with an insulating sleeve, and the insulating sleeve is sleeved on the periphery of the first conductive post (42).

6. A resistance heat assisted welding device according to claim 4, wherein the insulating block is mounted between the holder (43) and the frame (2) of the welding machine.

7. The resistance heat auxiliary welding device according to claim 4, characterized in that the fixing seat (43) is provided with a spring fixing plate (434), a spring (433) and a receiving groove (435), the spring (433) is located in the receiving groove (435), one end of the spring (433) is in contact with and pressed against the spring fixing plate (434), the other end of the spring (433) is in contact with and pressed against the second conductive pillar (44), the spring fixing plate (434) is located at an opening of the receiving groove (435), and the spring fixing plate (434) is fixedly connected with the fixing seat (43).

8. A resistance heat assisted welding device according to claim 7, characterized in that the holder (43) is further provided with a washer (432) at the spring (433).

9. A resistance heat assisted welding device according to claim 2, wherein the second via is located at a node of the first welding end (32).

10. Resistance heat assisted welding device according to one of the claims 4 to 6, further comprising a cooling system (5) comprising a coolant inlet (51), a water inlet connection (54), a coolant channel (53), a water outlet connection (55) and a coolant outlet (52) connected in series, said coolant channel (53) being arranged inside said second conductive post (44).