CN109623067B

CN109623067B - Ultrasonic auxiliary brazing equipment capable of balancing self-weight pre-compaction and adapting to different sizes

Info

Publication number: CN109623067B
Application number: CN201910016377.9A
Authority: CN
Inventors: 李一楠; 彭子龙; 周志康; 杨乘飞; 崔壮; 李驰; 吴志远
Original assignee: Qingdao University of Technology
Current assignee: Qingdao University of Technology
Priority date: 2019-01-08
Filing date: 2019-01-08
Publication date: 2021-03-09
Anticipated expiration: 2039-01-08
Also published as: CN109623067A

Abstract

The invention relates to an ultrasonic auxiliary brazing device capable of balancing dead weight pre-compression and adapting to different sizes, which comprises a frame, wherein a height adjusting device is arranged on the frame, a balancing dead weight device is arranged on the height adjusting device, the balancing dead weight device can move up and down, a pressurizing device is arranged on the balancing dead weight device, a clamping device is arranged at the lower end of the pressurizing device, the clamping device clamps an ultrasonic generator, a welded part clamp is arranged below the ultrasonic generator, the clamp is fixed on a leveling device, and the leveling device can be placed in a heating furnace.

Description

Ultrasonic auxiliary brazing equipment capable of balancing self-weight pre-compaction and adapting to different sizes

Technical Field

The disclosure relates to an ultrasonic auxiliary brazing device capable of balancing self-weight pre-compression and adapting to different sizes.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

Ultrasound is widely used in welding due to its sonoplastic, cavitation, and acoustic flow agitation effects. The role of ultrasonic in diffusion welding is mainly reflected in that: (1) the ultrasonic wave can effectively remove the oxide film on the surface of the material and promote the wetting of the liquid solder. (2) The ultrasonic wave can promote the dissolution of the base parent metal in the liquid brazing filler metal. (3) Ultrasonic waves can affect metallurgical reactions near the interface.

The ultrasonic probe transmits ultrasonic waves through a certain pressure to a welded piece in the welding process, and the pressure is required to be stable and the numerical value is accurate in the ultrasonic applying process. The ultrasonic probe is tightly attached to the welded part, the requirements are difficult to realize through holding by hands, the precision is difficult to guarantee, and the workload of operators is increased, so that ultrasonic auxiliary brazing equipment needs to be designed to assist in completing a welding process.

The main problems of the existing ultrasonic probe bracket are as follows: 1) the applied pressure value is inaccurate, so that the experimental condition is inaccurate, and the variable cannot be controlled. 2) The application position of the ultrasonic wave generating device is fixed, and the adjustment along with the size change of the weldment cannot be realized. 3) The ultrasonic probe and the weldment are not easy to level, and the pressure head and the weldment cannot be completely and tightly attached, so that the weldment deforms.

Disclosure of Invention

Aiming at the background technology, the ultrasonic auxiliary brazing equipment which can balance the dead weight, is high in efficiency, simple in operation, adjustable in balance and adjustable in pressure and adapts to the workpieces to be brazed in different sizes is provided by the disclosure.

The present disclosure specifically adopts the following technical scheme:

the present disclosure provides an ultrasonic-assisted brazing apparatus, comprising:

a frame;

the height adjusting device is arranged on the rack and comprises a ball screw sliding table I;

the self-weight balancing device comprises an L-shaped plate, two extension springs connected with the L-shaped plate and a spring pull rod connected with the lower ends of the springs;

the pressurizing device comprises a ball screw sliding table II, a pressing rod and a pressure sensor, and the pressing rod is arranged on a sliding block of the ball screw sliding table II;

the clamping device is composed of a U-shaped plate, the pressure sensor is arranged on the upper plate of the U-shaped plate, the lower plate of the U-shaped plate is composed of a chuck I and a chuck II, a space for clamping the ultrasonic generator is formed after the chuck I and the chuck II are combined, and a hook connected with the lower end of the spring pull rod capable of penetrating through the upper plate of the U-shaped plate is arranged on the side plate surface of the U-shaped plate;

the sliding block of a ball screw sliding table I in the height adjusting device is connected with the side panel of an L-shaped plate in the balance self-weight device, the upper panel of the L-shaped plate is connected with a ball screw sliding table II in the pressurizing device, and a pressure rod in the pressurizing device can penetrate through the upper panel of the L-shaped plate to be contacted with the pressure sensor.

Further, the equipment also comprises a leveling device, wherein the leveling device comprises a leveling upper plate, a leveling lower plate and leveling bolts, the leveling upper plate can be used for placing a welded part clamp, and the leveling upper plate forms a double-layer leveling plate through the leveling bolts.

Compared with the related technology known by the inventor, one technical scheme of the present disclosure has the following beneficial effects:

1. the pressure sensor is ensured to be a value of the applied pressure through the balance deadweight device, the accuracy of the pressure is ensured, meanwhile, any pressure value in the range of the pressure sensor can be provided, and the requirements of different pressure values are met.

2. In the aspect of leveling, a leveling device is arranged at the bottom end of the clamp, and the workpiece is ensured to be in close contact with the ultrasonic probe through four leveling bolts.

3. In the aspect of popularization and application, the ultrasonic generator can be suitable for workpieces with various heating modes, different shapes and different sizes, is not limited by the size and the weight of the ultrasonic generator, and can provide any pressure value to be beneficial to wide popularization and application.

4. In the aspect of labor force, the automatic pressurization saves labor force and accords with ergonomics.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the disclosure and, together with the description, serve to explain the disclosure and not to limit the disclosure.

FIG. 1 is an overall orthogonal three-axis view of the present disclosure;

figure 2 is an isometric three view of a U-shaped plate clamping device of the present disclosure;

FIG. 3 is an L-shaped plate balance deadweight apparatus of the present disclosure;

FIGS. 4-1, 4-2 are a block diagram and a front view of a leveling device of the present disclosure;

FIG. 5 is an isometric view of a height adjustment device of the present disclosure;

FIG. 6 is a side view of a compression device of the present disclosure;

wherein: 1. a frame base, 2, a resistance heating furnace, 3, a leveling bolt, 4, a leveling upper plate, 5, a plum chuck, 6, a fixing pin, 7, an ultrasonic generator, 8, a slide rail foot, 9, a linear slide rail, 10, chucks I, 11, chucks II, 12, U-shaped plates, 13, a U-shaped plate hook, 14, a spring pull rod, 15, a slide block I, 16, an S-shaped pressure sensor, 17, a pressure rod, 18, an extension spring, 19, a spring cross rod, 20, a locking nut, 21, an adjusting nut, 22, a cross rod foot, 23, a fixing drag hook, 24, a fixing cross rod, 25, an adjusting bolt, 26, a slide block II, 27, a lead screw I, 28, a plum coupler, 29, a motor, 30, a motor bracket, 31, an adjusting rotating wheel, a 32 bracket upper plate, 33, a lead screw II, 34, a guide pillar, 35, a slide block III, 36, a bracket back plate, 37, a slide block IV, 39. the fixture comprises a fixture base 40, a leveling base 41, a welded part 42 and a center ball.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and further it is to be understood that when terms including and/or including are used in this specification, they specify the presence of the features, steps, operations and/or combinations thereof.

As the background introduces, there is a need for an ultrasonic assisted brazing apparatus that is self-weight balancing, efficient, simple to operate, adjustable and pressure adjustable, and adaptable to workpieces of different sizes, to which the present disclosure provides an ultrasonic assisted brazing apparatus pre-compacted to accommodate different sizes, the apparatus comprising:

a frame;

the pressurizing device comprises a ball screw sliding table II, a pressing rod and a pressure sensor, and the pressing rod is arranged on a sliding block of the ball screw sliding table;

the sliding block of a ball screw sliding table I in the height adjusting device is connected with the side panel of an L-shaped plate in the balance self-weight device, the balance self-weight device can move up and down along with the sliding block, the upper panel of the L-shaped plate is connected with the ball screw sliding table in the pressurizing device, and a pressure rod in the pressurizing device can penetrate through the upper panel of the L-shaped plate to be contacted with the pressure sensor.

In one or some embodiments of the disclosure, the apparatus further comprises a leveling device, the leveling device comprises a leveling upper plate, a leveling lower plate and leveling bolts, wherein the upper plate can be used for placing a welded piece clamp, and the leveling upper plate forms a double-layer leveling plate through the leveling bolts.

Furthermore, the number of the leveling bolts is 4, and the levelness of the clamp and the levelness of the welded part can be adjusted by adjusting four leveling screws in the leveling device, so that uneven pressure caused by unevenness is prevented.

Be equipped with the anchor clamps of centre gripping by the weldment on the leveling upper plate, the plum blossom chuck has been inlayed on the base of anchor clamps, the plum blossom chuck is fixed on the anchor clamps base through two fixed pins, the plum blossom chuck can be when effective spacing by the weldment for the extrudate in the welding process provides abundant overflow space.

Furthermore, the leveling device also comprises a center ball which is positioned between the leveling upper plate and the leveling lower plate and plays a supporting role for the leveling upper plate.

In the height adjusting device of the present disclosure, the ball screw slide i is conventionally known as a height adjusting device to those skilled in the art.

Furthermore, the height adjusting device is composed of a double-shaft ball screw, the double-shaft ball screw comprises an adjusting rotating wheel, a ball screw, two guide posts and two sliding blocks, the two sliding blocks penetrate through the two guide posts and the ball screw, one end of the ball screw is connected with the adjusting rotating wheel, the ball screw is driven to rotate through rotating the adjusting rotating wheel, and the ball screw rotates to adjust the height of the two sliding blocks; the two sliding blocks are connected with an L-shaped plate in the balance dead weight device.

In this disclosure's among the balance weight device, still including setting up the spring horizontal pole on the upper portion of L template, the upper end of spring is established on the spring horizontal pole.

Furthermore, two linear slide rails are fixed on the L-shaped plate, two slide blocks are arranged on each linear slide rail, and the slide blocks are connected with the side plates of the U-shaped plate through bolts.

The extension spring in the self-weight balancing device can effectively balance the self weights of the ultrasonic generator and the U-shaped plate, so that the reading of the pressure sensor is the force acting on the welded part, the self weight of the pressure sensor is not considered, the linear slide rail and the slide block can limit the movement of the ultrasonic generator, the ultrasonic generator can only move up and down, and the ultrasonic generator is prevented from being dislocated in the vibration process.

In the pressurizing device, the ball screw sliding table II comprises a motor, a plum blossom coupling, a sliding block and a ball screw, the motor drives the ball screw to rotate through the plum blossom coupling, and the height of the sliding block is adjusted through the rotation of the ball screw.

Furthermore, pressure device still includes the motor frame, the motor frame is fixed with a ball slip table, be fixed with a depression bar through the nut on the slider of ball slip table, there is a pressure sensor under the depression bar. The motor drives the pressure rod connected to the sliding block to move, so that the pressure rod acts on the pressure sensor, the pressure value is read through the pressure digital display meter, and the preset pressure value is applied through regulating the forward rotation and the reverse rotation of the motor.

Further, the pressure sensor is an S-shaped pressure sensor. The S-shaped pressure sensor is used for accurately applying pressure, so that the applied pressure is accurately controlled.

Among the clamping device, the S type pressure sensor lower extreme passes through bolted connection on the upper plate of U template, U template hypoplastron is a chuck, the chuck passes through the bolt and fixes supersonic generator on the U template, the U template passes through the couple and links to each other with the spring pull rod.

The equipment of the present disclosure further comprises a resistance heating furnace, which is located below the ultrasonic generator when in use; the leveling device is placed in the resistance heating furnace, a set of clamp is fixed on the leveling device through a clamping groove, and the clamp can effectively limit a welded part.

The leveling and pre-pressing adjustable ultrasonic auxiliary brazing equipment is suitable for different sizes, mainly realizes the functions of fixing an ultrasonic generator, leveling a welded piece, balancing the dead weight of an ultrasonic generating system, accurately providing a required pressure value and the like, and can adjust the height of the equipment to adapt to the welded pieces with different sizes. The application of the ultrasonic wave in the ultrasonic-assisted brazing is mechanized and automated, so that the manpower and material resources are reduced, the working efficiency is improved, the pressure precision is improved, and the defects caused by uneven welded parts are reduced. The self-weight of the ultrasonic generation system can be self-balanced, so that pressure of any size can be applied to a welded piece, the pressure is accurately applied through the S-shaped pressure sensor, and the accurate control of the applied pressure is guaranteed. The balance position of the ultrasonic generating system can be adjusted by the ball screw sliding table and the spring adjusting nut, so that the thickness and the size of the workpiece are not limited. The verticality of the welded part and the ultrasonic probe is ensured by adjusting the leveling bolt on the clamp, and the close contact is realized.

In order to make the technical solutions of the present disclosure more clearly understood by those skilled in the art, the technical solutions of the present disclosure will be described in detail below with reference to specific embodiments.

Fig. 1 is an overall orthogonal three-axis view of the apparatus of the present disclosure, which can more clearly show the relationship between the various components. The diagram shows the relative positions of the height adjusting device, the leveling device, the L-shaped plate self-balancing device, the U-shaped plate clamping device and the pressurizing device.

Figure 2 is a U-shaped plate clamping device of the present disclosure. The chuck I10 is engaged with the chuck II11 by bolts, and clamps the flange of the ultrasonic generator 7 in a space (a gap with a certain interval) formed by the engagement of the chuck I10 and the chuck II11, thereby holding and fixing the ultrasonic generator 7. An S-shaped pressure sensor 16 is fixed at the upper end of the U-shaped plate (also called U-shaped frame) through a bolt, so that the ultrasonic generator 7, the S-shaped pressure sensor 16 and the U-shaped frame are fixed into a whole, and the clamping function is completed.

Fig. 3 is an L-shaped plate balance deadweight device of the present disclosure. The extension spring 18 is hooked on the spring cross rod 19, the spring cross rod 19 is fixed on the adjusting bolt 25 through the adjusting nut 21, and the upper portion of the adjusting bolt 25 is connected to a cross rod anchor 22 of the upper plate of the L-shaped plate, so that the upper end of the extension spring 18 is connected with the L-shaped plate. The lower end of the extension spring 18 is connected with a spring pull rod 14, the lower end of the spring pull rod 14 is hooked with a U-shaped plate hook 13 in the figure 2, so that the U-shaped frame clamping device is connected to the L-shaped plate through the spring, and the dead weight of the ultrasonic generator 7, the S-shaped pressure sensor 16 and the U-shaped frame can be balanced through the extension action of the spring.

Fig. 4-1 and 4-2 are structural views of the leveling device of the present disclosure. The leveling upper plate 4 is supported on the leveling base 40 (also called leveling lower plate) through a center ball 42, and the center ball 42 can effectively support the leveling upper plate 4 without affecting the adjustment of the balance degree of the leveling upper plate. The clamp base 39 is embedded on the leveling upper plate 4, the plum chuck 5 is embedded on the clamp base 39 and fixed by two fixing pins 6. The balance degree of the leveling upper plate 4 and the leveling base 40 is adjusted by adjusting four leveling bolts 3 therebetween.

Fig. 5 is a height adjustment device of the present disclosure. Height adjusting device comprises a biax ball, it rotates to drive lead screw II33 through rotating adjustment runner 31, lead screw II33 rotates the height that can adjust slider III35 and slider IV37, slider III35 and slider IV37 pass two guide pillars 34, can effectively guarantee its stability, the slider passes through bolt fixed connection with the L template, the up-and-down position of controlling whole mechanism through the up-and-down motion of slider, thereby can satisfy the requirement that the difference is by the weldment size.

Fig. 6 is a compression device of the present disclosure. Whole device is fixed on the L template, and motor 29 drives lead screw I27 through plum blossom shaft coupling 28 and rotates, through the rotation regulation slider II26 'S of lead screw I27 height, depression bar 17 passes through the bolt fastening on slider II26, and depression bar 17 moves down under slider II 26' S drive, presses on S type pressure sensor 16, adjusts S type pressure sensor 'S reading through motor 29' S positive and negative commentaries on classics to accurate arbitrary pressure value that provides a pressure sensor range.

The specific working process of the equipment is as follows:

the ultrasonic generator 7 is fixed on the U-shaped plate 12 through the chuck I10 and the chuck II11, the U-shaped plate 12 and the ultrasonic generator 7 naturally descend, and the extension spring 18 is extended to balance the dead weight. The welded part 41 is placed into the plum chuck 5, the plum chuck 5 is fixed on the clamp base 39 through the fixing pin 6, the clamp is placed on the leveling device in the resistance heating furnace 2, and the welded part is leveled to the level by adjusting the four leveling screws. The adjusting rotating wheel 31 is rotated to enable the whole device to descend until the ultrasonic generator 7 just contacts the welded part, the motor 29 is started, the pressure rod 17 descends to press the S-shaped pressure sensor 16 on the U-shaped plate 12, the pressure value is accurately read through the S-shaped pressure sensor 16, and a certain pressure value is provided. After the welding process is finished, the motor 29 reverses the pressure rod 17 to ascend, removes pressure, rotates the adjusting rotating wheel 31, ascends the whole device, takes out the welded piece 41, and finishes the whole process. If the welded piece 41 is stuck on the clamp, the plum blossom chuck 5, even the whole clamp can be taken out and the welded piece 41 can be taken out. In order to prevent the tension spring 18 from being elongated for a long time and causing spring fatigue, the U-shaped frame can be hooked on the fixed hook 23 at the non-operating time.

The above embodiments are preferred embodiments of the present disclosure, but the embodiments of the present disclosure are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present disclosure should be regarded as equivalent replacements within the scope of the present disclosure.

Claims

1. An ultrasonic assisted brazing apparatus, characterized in that the apparatus comprises:

a frame;

the self-weight balancing device also comprises a spring cross rod arranged at the upper part of the L-shaped plate, and the upper end of the spring is arranged on the spring cross rod; the lower end of the extension spring is connected with a spring pull rod, and the lower end of the spring pull rod is hooked with the U-shaped plate hook;

the side panel of an L-shaped plate in the balance dead weight device is connected with a sliding block in the ball screw sliding table I; the pressurizing device comprises a ball screw sliding table II, a pressing rod and a pressure sensor, and the pressing rod is arranged on a sliding block of the ball screw sliding table II; a pressure sensor is arranged right below the pressure lever;

the pressurizing device is fixed on the upper panel of the L-shaped plate;

among the clamping device, the pressure sensor lower extreme passes through bolted connection on the upper plate of U template, U template hypoplastron is a chuck, the chuck passes through the bolt and fixes supersonic generator on the U template, the U template passes through the couple and links to each other with the spring pull rod.

2. The apparatus of claim 1, further comprising: the equipment further comprises a leveling device, wherein the leveling device comprises a leveling upper plate, a leveling lower plate and leveling bolts, the leveling upper plate can be used for placing a welded part clamp, and the leveling upper plate forms a double-layer leveling plate through the leveling bolts.

3. The apparatus of claim 2, further comprising: the leveling bolts are 4.

4. The apparatus of claim 2, further comprising: the leveling device also comprises a central ball which is positioned between the leveling upper plate and the leveling lower plate and plays a supporting role for the leveling upper plate.

5. The apparatus of claim 1, further comprising: the ball screw sliding table I of the height adjusting device is composed of a double-shaft ball screw, the double-shaft ball screw comprises an adjusting rotating wheel, the ball screw, two guide columns and two sliding blocks, the two sliding blocks penetrate through the two guide columns and the ball screw, and one end of the ball screw is connected with the adjusting rotating wheel.

6. The apparatus of claim 1, further comprising: two linear slide rails are fixed on the L-shaped plate, two sliding blocks are arranged on each linear slide rail, and the sliding blocks are connected with the side plates of the U-shaped plate through bolts.

7. The apparatus of claim 1, further comprising: in the pressurizing device, the ball screw sliding table II comprises a motor, a plum blossom coupling, a sliding block and a ball screw, the motor drives the ball screw to rotate through the plum blossom coupling, and the height of the sliding block is adjusted through the rotation of the ball screw.

8. The apparatus of claim 1, further comprising: the pressurizing device further comprises a motor rack, a ball screw sliding table is fixed on the motor rack, and a pressing rod is fixed on a sliding block of the ball screw sliding table through a nut.

9. The apparatus of claim 1, further comprising: the pressure sensor is an S-shaped pressure sensor.

10. The apparatus of claim 1, further comprising: the apparatus further comprises a resistance heating furnace; the leveling device is placed in the resistance heating furnace, a set of clamp is fixed on the leveling device through a clamping groove, and the clamp can effectively limit a welded part.