CN111844764A

CN111844764A - Welding method of ultrasonic plastic welding machine

Info

Publication number: CN111844764A
Application number: CN202010659005.0A
Authority: CN
Inventors: 安泽陆
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2020-10-30

Abstract

The invention discloses a welding method of an ultrasonic plastic welding machine, which mainly comprises the following processing steps: the welding equipment used in the welding process of the ultrasonic plastic welding machine comprises a case and a welding handle, wherein a propelling box and a gas collecting box are fixed on the side wall of the welding handle, compression springs are fixed at the inner bottoms of the propelling box and the gas collecting box, sealing plates are fixed at the upper ends of the two compression springs, and compression pipes are inserted into the bottoms of the two sealing plates in a penetrating manner. Has the advantages that: place the clamp plate in the panel upper end, then through the effectual extrusion clamp plate of the mode of pressing down the welding handle for the clamp plate can compress tightly panel, makes the lifting surface area increase that panel pressed, and presses down the position and be close to the welding point more, can guarantee the inseparable laminating of two panel welding points, thereby avoids the welding point to produce great clearance and leads to the flash to get into the gap and influence welding quality.

Description

Welding method of ultrasonic plastic welding machine

Technical Field

The invention relates to the technical field of welding machines, in particular to a welding method of an ultrasonic plastic welding machine.

Background

The plastic welding machine is to transmit the ultrasonic wave to the plastic processing part through the welding head, make two plastic joint surfaces produce the violent friction because of receiving the ultrasonic action, the frictional heat makes the plastic joint surface melt and finish the agglutination, the technology has advantages such as fast, the welding seam is firm;

at present widely used hand-held type ultrasonic plastic welding machine carries out panel spot welding, convenient to use just can deal with more occasion, and plastic plate produces the flash easily when the welding, the flash can spout and attach to on panel, cause the pollution, and the unable flash of clearing up of present welding machine, need artifical clearance, it is inconvenient to use, and hand-held welding machine does not have hold-down stabilizing mean when using, and the manual welding point that is close that can not be better of pressing down, panel shifts easily when actual operation, lead to the welding point inaccurate, thereby lead to welding failure.

Disclosure of Invention

The invention aims to solve the problem that a welding process of a welding machine in the prior art is unstable, and provides a welding method of an ultrasonic plastic welding machine.

In order to achieve the purpose, the invention adopts the following technical scheme: a welding method of an ultrasonic plastic welding machine mainly comprises the following processing steps:

S1, wiring and adjusting: connecting and screwing down the patch cord on the welding handle and the aviation socket on the case, connecting the power cord of the case, turning on the switch of the case, and checking the welding handle and adjusting the amplitude by pressing the adjusting key to preset working time on the case;

s2, preparation of welding materials: placing two plastic plates on a platform in a superposed manner, then lifting a welding handle and placing a pressure plate above the plates, aligning a welding spot groove to a welding position on the plates and ensuring the accuracy of the welding position;

s3: primary welding of the plate: pressing the welding handle with a certain force to enable a welding head of the welding handle to be in contact with the plate, enabling the cutting edge to slide and give way in the downward moving process of the welding handle, simultaneously cleaning a welding point by air injection of the gas transmission groove, starting a welding switch, synchronously pressing the welding handle downwards to realize welding of the plate, and sucking waste gas generated in the welding process by the gas transmission groove in the welding process and collecting and purifying the waste gas;

s4: changing spot welding: after the initial point welding is finished, closing a welding switch and slowly lifting a welding handle, resetting a cutting edge to cut and collect the sprayed flash so that the flash is separated from the surface of the plate, simultaneously spraying air from an air conveying groove to cool a welding point, and then lifting the welding handle and moving to the next welding point for reinforcement welding;

S5: and (5) finishing welding: repeatedly replacing a plurality of welding points for welding until the plates are welded stably, then closing a power switch of the case, disconnecting the welding handle from the case, storing the welding handle and the case, collecting the welded plates, and completing welding;

the welding equipment used in the welding process of the ultrasonic plastic welding machine comprises a case and a welding handle, wherein a propelling box and a gas collecting box are fixed on the side wall of the welding handle, compression springs are fixed on the inner bottoms of the propelling box and the gas collecting box, a sealing plate is fixed on the upper ends of the compression springs, compression pipes are arranged at the bottoms of the sealing plates in an inserting mode, the compression pipes penetrate through the bottoms of the propelling box and the gas collecting box respectively, a pressing plate is fixed on the bottoms of the compression pipes jointly, a welding point groove is formed in the upper end of the pressing plate in a penetrating mode, and a cleaning mechanism is arranged inside the welding point groove.

In foretell ultrasonic plastic welding machine welding equipment, clearance mechanism includes that the symmetry sets up two spouts in welding spot groove both sides inner wall, two the spout is through setting up the propulsion groove intercommunication on the spout inner wall, with the pipe that compresses tightly that impels the case intercommunication and impel the inside intercommunication of inslot, the inner wall sealing sliding connection who impels the groove has two push rods, two the one end that the push rod was kept away from each other all is fixed with the connecting plate, two the lateral wall of connecting plate is fixed with the cutting spring respectively with the inner wall of two spouts jointly, two the one end that the connecting plate is located welding spot inslot portion all is fixed with the cutting sword.

In the welding equipment of the ultrasonic plastic welding machine, the inner wall of the welding spot groove is provided with the gas transmission groove, the inner wall of the gas transmission groove is fixed with the filter screen, the compression pipe communicated with the inside of the gas collection box is communicated with the inside of the gas transmission groove, the inner wall of the upper part of the gas collection box is fixed with the bearing plate, the inner wall of the bearing plate is hermetically and slidably connected with the sealing rod, the upper end of the sealing rod is fixed with the sliding block hermetically and slidably connected with the inner wall of the gas collection box, the upper end of the sliding block and the inner top of the gas collection box are jointly fixed with the reset spring, and the upper end of the.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, the pressing plate is placed at the upper end of the plate, and then the pressing plate is effectively extruded in a mode of pressing the welding handle, so that the pressing plate can tightly press the plate, the pressing force area of the plate is increased, the pressing position is closer to the welding point, the tight fit of the welding points of the two plates can be ensured, and the phenomenon that flash enters a gap to influence the welding quality due to a larger gap generated by the welding point is avoided;

2. according to the invention, the welding position is determined in the welding spot groove by arranging the welding spot groove, the internal space of the welding spot groove is limited, and even flash is generated in the welding process, the flash can be restrained by the welding spot groove and cannot be sprayed out in a large range, so that the surface of the plate is protected, and meanwhile, the pollution of the flash is reduced;

3. In the process that the welding handle moves downwards, the interiors of the pushing groove and the gas transmission groove are inflated, so that the cutting edge gives way for a welding head under the pushing of air pressure, and the welding position of the plate is cleaned by gas sprayed from the gas transmission groove, so that the influence of dust and fine impurities on the welding process is avoided, and the welding quality is ensured;

4. when a welding handle welding switch is started, electrorheological fluid is electrified, solidified and expanded, so that a sliding block is pushed to move upwards, a return spring is stressed and compressed, a sealing rod moves upwards to improve the lower space of a gas collection box, the internal air pressure of the gas collection box is reduced, and air in a welding spot groove enters the gas collection box under the action of external air pressure, so that waste gas generated by high temperature of a plate in the welding process is collected and cannot spread to cause damage to human bodies, and meanwhile, the waste gas is purified by a filter screen, so that the waste gas cannot be discharged to pollute the air;

5. according to the invention, when welding is finished, electrorheological fluid is cut off and liquefied, the sliding block is reset under the action of the elastic force of the reset spring to push gas in the gas collection box to be sprayed out, so that the temperature of a welding point is reduced, and in the process that the welding handle moves upwards, the gas in the pushing groove returns to the pushing box, so that the cutting blade is reset under the action of the cutting spring to cut flash, the flash is separated from a plate, and the surface of the plate is cleaned.

Drawings

FIG. 1 is a schematic structural diagram of a processing device used in the processing process of an ultrasonic plastic welding machine according to the present invention;

FIG. 2 is a top cross-sectional view of a platen portion of a processing apparatus used in the processing of an ultrasonic plastic welder in accordance with the present invention.

In the figure: the device comprises a case 1, a welding handle 2, a pushing box 3, a gas collecting box 4, a pressing spring 5, a sealing plate 6, a pressing pipe 7, a pressing plate 8, a welding point groove 9, a gas transmission groove 10, a filter screen 11, a sliding groove 12, a pushing groove 13, a pushing rod 14, a connecting plate 15, a cutting spring 16, a cutting edge 17, a bearing plate 18, a sealing rod 19, a sliding block 20 and a return spring 21.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-2, a welding method of an ultrasonic plastic welding machine mainly comprises the following processing steps:

s1, wiring and adjusting: connecting and screwing down the patch cord on the welding handle 2 with the aviation socket on the case 1, then connecting the power cord of the case 1, then turning on the switch of the case 1, pressing the adjusting key on the case 1 for presetting working time, checking the welding handle 2 and adjusting the amplitude;

s2, preparation of welding materials: two plastic plates are stacked on a platform, then the welding handle 2 is lifted, the pressing plate 8 is placed above the plates, and the welding spot groove 9 is aligned to the welding position on the plates, so that the accuracy of the welding position is ensured;

S3: primary welding of the plate: pressing the welding handle 2 with a certain force to enable a welding head of the welding handle 2 to be in contact with the plate, enabling the cutting edge 17 to slide and give way in the downward moving process of the welding handle 2, simultaneously spraying air to the air transmission groove 10 to clean a welding point, starting a welding switch, synchronously pressing the welding handle 2 downward to realize the welding of the plate, and sucking waste gas generated in the welding process by the air transmission groove 10 in the welding process and collecting and purifying the waste gas;

s4: changing spot welding: after the initial point welding is finished, closing a welding switch and slowly lifting the welding handle 2, resetting the cutting blade 17 to cut and collect the sprayed flash so that the flash is separated from the surface of the plate, simultaneously spraying air to cool the welding point by the air transmission groove 10, and then lifting the welding handle 2 and moving to the next welding point for reinforcement welding;

s5: and (5) finishing welding: repeatedly replacing a plurality of welding points for welding until the plates are welded stably, then closing a power switch of the case, disconnecting the welding handle 2 from the case 1, storing the welding handle 2 and the case 1, collecting the welded plates, and completing welding;

the welding equipment used in the welding process of the ultrasonic plastic welding machine comprises a case 1 and a welding handle 2, wherein a propelling box 3 and a gas collecting box 4 are fixed on the side wall of the welding handle 2, compression springs 5 are fixed on the inner bottoms of the propelling box 3 and the gas collecting box 4, sealing plates 6 are fixed on the upper ends of the two compression springs 5, compression pipes 7 are inserted into the bottoms of the two sealing plates 6 in a penetrating manner, the two compression pipes 7 respectively penetrate through the bottoms of the propelling box 3 and the gas collecting box 4, the two compression pipes 7 are respectively connected with the bottoms of the propelling box 3 and the gas collecting box 4 in a sealing and sliding manner, the two sealing plates 6 are respectively connected with the inner walls of the propelling box 3 and the gas collecting box 4 in a sealing and sliding manner, a pressing plate 8 is fixed on the bottoms of the two compression pipes 7 together, a welding spot groove 9 is formed in the upper end of the pressing plate 8;

Clearance mechanism sets up two spouts 12 in welding point groove 9 both sides inner wall including the symmetry, two spouts 12 are through setting up propulsion groove 13 intercommunication on spout 12 inner wall, compress tightly pipe 7 and propulsion groove 13 inside intercommunication with propulsion case 3 intercommunication, this compresses tightly pipe 7 and the central point that is located propulsion groove 13 puts, the sealed sliding connection of inner wall that impels groove 13 has two push rods 14, it will promote two push rods 14 simultaneously to get into the inside gas of propulsion groove 13 and remove to compress tightly pipe 7, the one end that two push rods 14 kept away from each other all is fixed with connecting plate 15, the lateral wall of two connecting plates 15 is fixed with cutting spring 16 with the inner wall of two spouts 12 jointly respectively, the one end that two connecting plates 15 are located welding point groove 9 inside all is fixed with cutting edge 17.

The inner wall of the welding spot groove 9 is provided with a gas transmission groove 10, the inner wall of the gas transmission groove 10 is fixed with a filter screen 11, the filter screen 11 is placed with active carbon, which has the effect of purifying waste gas, the pressing pipe 7 communicated with the inside of the gas collection box 4 is communicated with the inside of the gas transmission groove 10, the inner wall of the upper part of the gas collection box 4 is fixed with a bearing plate 18, the bearing plate 18 is a hollow T-shaped plate structure, the inner wall of the bearing plate 18 is connected with a sealing rod 19 in a sealing and sliding way, the upper end of the sealing rod 19 is fixed with a slide block 20 in a sealing and sliding way with the inner wall of the gas collection box 4, the upper end of the slide block 20 and the inner top of the gas collection box 4 are jointly fixed with a reset spring 21, the upper end of the bearing plate 18 is filled with electrorheological fluid, the electrorheological fluid is, the amplitude of the volume increase is positively correlated with the size of the electrified current, the current of the welding machine is large, and the electrorheological fluid is greatly changed by the volume after the welding machine is electrified.

In the invention, when welding plastic plates, a welding handle 2 is connected with a case 1 and welding parameters on the case 1 are adjusted, then two plates with welding are overlapped and stably placed, then a pressing plate 8 is placed above the plates by holding the welding handle 2, a welding point groove 9 is aligned with a welding point, then the welding handle 2 is pressed downwards to enable a welding head at the lower end of the welding handle to be contacted with the plates, in the process that the welding handle 2 moves downwards, as a propelling box 3 and a gas collecting box 4 are fixedly connected with the welding handle 2, the propelling box 3 and the gas collecting box 4 move downwards along with the pushing handle, so that a compression spring 5 is stretched downwards under the pulling force, a sealing plate 6 moves upwards relative to the propelling box 3 and the gas collecting box 4, the space above the propelling box 3 and the gas collecting box 4 is reduced, and air at the upper part is extruded by the sealing plate 6 to enter a compression pipe 7 and further enter a gas transmission groove 10 and a propelling groove 13 respectively, the air entering the pushing groove 13 pushes the two push rods 14 to move, so that the push rods 14 drive the connecting plate 15 and the cutting edge 17 to move, the cutting spring 16 is synchronously stretched, the air entering the air conveying groove 10 passes through the filter screen 11 to be filtered and purified, then the air is directly sprayed to the welding spot groove 9, and the welding position on the plate is cleaned by blowing, so that the welding spot is cleaner;

Then starting a welding switch on the welding handle 2 to start welding operation, electrifying the electrorheological fluid on the upper part of the bearing plate 18 along with the start of the welding switch, solidifying the electrorheological fluid after electrifying and increasing the volume due to larger welding current, pushing the slide block 20 to move upwards, enabling the slide block 20 to compress the return spring 21 and drive the sealing rod 19 to move upwards, increasing the air pressure in the lower space of the air collection tank 4 to reduce, enabling the gas in the air collection tank 10 to be supplemented into the air collection tank 4, enabling the gas in the welding spot tank 9 to actively move towards the inside of the air collection tank 10 under the action of atmospheric pressure, enabling the plate to be sucked into the air collection tank 10 and then transferred into the air collection tank 4 due to the harmful gas decomposed at high temperature in the welding process, and the harmful gas passes through the air collection tank 10 to be filtered and purified by the activated carbon in the filter screen 11, so that the harmful substances are cleaned, so that the gas is purified, and the harmful gas does not harm the human health any more;

after welding of a welding point is completed, firstly, a welding switch on the welding handle 2 is closed, and when the power-on is finished, the electrorheological fluid at the upper end of the bearing plate 18 is synchronously powered off, so that the liquefied volume is reduced, the sliding block 20 moves downwards under the action of the elastic force of the return spring 21 to reset, the sealing rod 19 is further pushed downwards to push the gas in the gas collection box 4 to be sprayed outwards, the gas is sprayed to the welding point after being purified by the filter screen 11, and the airflow of the welding point is accelerated to flow so as to achieve the purposes of cooling;

Then the welding handle 2 is slowly lifted to move upwards to separate from the plate, in the process, the propelling box 3 and the gas collecting box 4 move upwards along with the propelling box 3, so that the space inside the propelling box 3 and the gas collecting box 4 is increased, the air pressure is reduced, the air inside the propelling groove 13 is extruded into the propelling box 3 by the push rod 14 under the elastic action of the cutting spring 16, the air conveying groove 10 directly sucks the air at the position of the welding point groove 9, the air at the position of the welding point flows at an accelerated speed, the welding point is further cooled, after the air inside the propelling groove 13 is transferred, the cutting blade 17 is reset to move towards the center of the welding point groove 9 under the elastic action of the cutting spring 16, and therefore the flash generated at the position of the welding point is cut and cleaned, the surface of the plate is free from a large amount of residual flash, and the cleanness of the plate after being processed is ensured.

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 invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A welding method of an ultrasonic plastic welding machine is characterized in that: the method mainly comprises the following processing steps:

S1, wiring and adjusting: connecting and screwing down a patch cord on the welding handle (2) and an aviation socket on the case (1), connecting a power cord of the case (1), turning on a switch of the case (1), presetting working time by pressing an adjusting key on the case (1), and checking the welding handle (2) and amplitude adjustment;

s2, preparation of welding materials: two plastic plates are stacked on a platform, then a welding handle (2) is lifted, a pressing plate (8) is placed above the plates, and a welding point groove (9) is aligned to the welding position on the plates, so that the accuracy of the welding position is ensured;

s3: primary welding of the plate: pressing the welding handle (2) with certain force to enable a welding head of the welding handle (2) to be in contact with the plate, enabling the cutting edge (17) to slide and give way when the welding handle (2) moves downwards, simultaneously cleaning the welding point by air injection of the air transmission groove (10), starting a welding switch, synchronously pressing the welding handle (2) downwards to realize welding of the plate, and sucking waste gas generated in the welding process by the air transmission groove (10) in the welding process and collecting and purifying the waste gas;

s4: changing spot welding: after the initial point welding is finished, closing a welding switch and slowly lifting a welding handle (2), resetting a cutting edge (17) to cut and collect the sprayed flash so that the flash is separated from the surface of the plate, simultaneously spraying air to cool the welding point by an air conveying groove (10), and then lifting the welding handle (2) and moving to the next welding point for reinforcement welding;

S5: and (5) finishing welding: repeatedly replacing a plurality of welding points for welding until the plates are welded stably, then closing a power switch of the case, disconnecting the welding handle (2) from the case (1), storing the welding handle (2) and the case (1), collecting the welded plates, and completing welding;

welding equipment used in the welding process of the ultrasonic plastic welding machine comprises a case (1) and a welding handle (2), wherein a pushing box (3) and a gas collecting box (4) are fixed on the side wall of the welding handle (2), compression springs (5) are fixed on the inner bottom of the pushing box (3) and the gas collecting box (4), a sealing plate (6) is fixed on the upper end of each compression spring (5), a compression pipe (7) is inserted into the bottom of each sealing plate (6) in a penetrating mode, the compression pipes (7) penetrate through the bottoms of the pushing box (3) and the gas collecting box (4) respectively and are fixed with a pressing plate (8), a welding point groove (9) is formed in the upper end of each pressing plate (8), and a cleaning mechanism is arranged inside the welding point groove (9).

2. The welding method of the ultrasonic plastic welding machine according to claim 1, characterized in that the cleaning mechanism comprises two sliding grooves (12) symmetrically arranged on the inner walls of two sides of the welding point groove (9), the two sliding grooves (12) are communicated through a pushing groove (13) arranged on the inner wall of the sliding groove (12), a pressing pipe (7) communicated with the pushing box (3) is communicated with the inside of the pushing groove (13), the inner wall of the pushing groove (13) is connected with two push rods (14) in a sealing and sliding manner, one ends, far away from each other, of the two push rods (14) are respectively fixed with a connecting plate (15), the side walls of the two connecting plates (15) are respectively fixed with cutting springs (16) together with the inner walls of the two sliding grooves (12), and one ends, located inside the welding point groove (9), of the two connecting plates (15) are respectively fixed with cutting blades (17).

3. The welding method of the ultrasonic plastic welding machine according to claim 1, characterized in that a gas transmission groove (10) is formed in the inner wall of the welding spot groove (9), a filter screen (11) is fixed on the inner wall of the gas transmission groove (10), a pressing pipe (7) communicated with the inside of the gas collection box (4) is communicated with the inside of the gas transmission groove (10), a bearing plate (18) is fixed on the inner wall of the upper portion of the gas collection box (4), a sealing rod (19) is connected to the inner wall of the bearing plate (18) in a sealing and sliding manner, a sliding block (20) connected with the inner wall of the gas collection box (4) in a sealing and sliding manner is fixed at the upper end of the sealing rod (19), a return spring (21) is fixed at the upper end of the sliding block (20) and the inner top of the gas collection box (4) together, and electrorheological fluid is filled at.