CN108145980B - Automatic ultrasonic-hot rivet welding equipment for plastic parts and welding method thereof - Google Patents
Automatic ultrasonic-hot rivet welding equipment for plastic parts and welding method thereof Download PDFInfo
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- CN108145980B CN108145980B CN201711324734.5A CN201711324734A CN108145980B CN 108145980 B CN108145980 B CN 108145980B CN 201711324734 A CN201711324734 A CN 201711324734A CN 108145980 B CN108145980 B CN 108145980B
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- welding
- template
- fixing plate
- upper template
- middle template
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
- B29C65/088—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using several cooperating sonotrodes, i.e. interacting with each other, e.g. for realising the same joint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/40—Applying molten plastics, e.g. hot melt
- B29C65/42—Applying molten plastics, e.g. hot melt between pre-assembled parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
Abstract
The invention relates to automatic ultrasonic-hot rivet welding equipment for plastic parts and a using method thereof, the equipment comprises a welding tool and a welding machine, when in use, the welding tool enters the welding machine through a roller on the upper surface of a die changing trolley, a lower template is fixed on a working platform, a middle template is fixed on a middle template fixing plate, an upper template is fixed on an upper template fixing plate, different cylinders respectively drive the middle template fixing plate and the upper template fixing plate to move downwards along a guide rail in the welding machine after the welding machine is started, the middle template and the upper template are driven to move downwards together, when a pressure point on the middle template is contacted with and pressed against the plastic parts, an ultrasonic welding head and a hot rivet welding head on the upper template start welding. The welding equipment has high automation degree and good welding effect, greatly lightens the labor intensity, and simultaneously and automatically compresses and welds the plastic parts.
Description
Technical Field
The invention relates to the technical field of mechanical design and manufacture, in particular to automatic ultrasonic-hot rivet welding equipment for automobile plastic parts and a corresponding welding method.
Background
Compared with the traditional metal and ceramic materials, the plastic has the remarkable advantages of light weight, easiness in processing and forming, good toughness, low cost and the like, is widely applied to industrial products, and is particularly obvious in the automobile industry due to the fact that more and more mechanical equipment parts adopt plastic parts. Most plastic parts are manufactured separately and then assembled together, thereby introducing connection problems for the plastic parts.
The existing connection mode between plastic parts mainly comprises a buckle connection structure, a viscose connection structure, an ultrasonic or hot rivet welding mode, a screw connection structure and the like. Wherein buckle connection structure designs on referring to a working of plastics and has the checkpost structure, and the design has the knot sub-structure on another working of plastics, and two structures are colluded mutually together and are linked to realize connecting fixedly, and this kind of connected mode uses under the condition that needs were dismantled usually, and the shortcoming is that the degree of colluding is not tight enough, and the trip is easy to fracture and is become invalid. The adhesive connecting structure is characterized in that the two plastic parts are connected through gluing, the two plastic parts are adhered together through the action of glue, and the glue is easy to generate peculiar smell and is not environment-friendly. The ultrasonic welding structure is characterized in that an ultrasonic machine is used for heating, the joint of the plastic parts is melted and adhered to each other, however, the existing ultrasonic welding or hot riveting mode adopts a simple tool or even a tool-free mode for welding operation, the welding pressing force is not enough, the effect is not good, the rejection rate is high, automatic welding cannot be realized, and the production efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects of the existing plastic piece ultrasonic wave or hot riveting mode and provides novel welding equipment and a novel tool, so that automatic rapid welding of different plastic pieces is realized, the welding reliability is good, the qualification rate is high, and the production efficiency is greatly improved. In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an automatic ultrasonic and hot rivet welding device for plastic parts comprises a welding tool and a welding machine.
The welding tool comprises an upper template, a middle template and a lower template, wherein an ultrasonic welding head and a hot riveting welding head are arranged on the upper template, and a pressing point is arranged on the middle template;
the welding machine comprises a workbench, a guide rail, a middle template fixing plate, an upper template fixing plate and a casing, wherein the workbench is used for fixing a lower template of a welding tool, the guide rail is arranged in the welding machine, the upper template of the welding tool can be fixed on the upper template fixing plate, the middle template of the welding tool can be fixed on the middle template fixing plate, the middle template fixing plate and the upper template fixing plate are driven by different cylinders, linear motion can be respectively carried out along the guide rail to drive the upper template and the middle template to move, after the welding machine moves to a proper position, a plastic piece placed on the lower template is compressed and fixed by a pressure point on the middle template, and an ultrasonic welding head and a hot riveting welding head on the upper template.
Further, the welding tool further comprises a plurality of supporting columns, and the supporting columns are used for supporting the upper template, the middle template and the lower template before and after welding.
Furthermore, the automatic ultrasonic and hot rivet welding equipment for the plastic parts further comprises a die changing trolley, wherein the upper surface of the die changing trolley is provided with a roller, and the height of the roller is equal to that of a workbench of a welding machine, so that the welding tool can be conveniently mounted and dismounted.
Furthermore, the bottom of the welding machine is provided with casters, so that the whole equipment can be moved conveniently.
Furthermore, the middle template fixing plate and the upper template fixing plate are driven by different cylinders and move linearly along the guide rail.
Furthermore, the vertical projections of the ultrasonic welding joints and the hot-rivet welding joints on the upper template are positioned inside the vertical projection of the pressing points on the middle template, the number of the ultrasonic welding joints is 7, and the number of the hot-rivet welding joints is 1.
The use method of the automatic ultrasonic and hot rivet welding equipment for the plastic part comprises the following steps: (a) placing a middle template of a welding tool on a lower template through a support column, then placing an upper template on the middle template through the support column, and then transferring the welding tool to a working platform of a welding machine; (b) fixing an upper template on an upper template fixing plate, fixing a middle template on a middle template fixing plate, fixing a lower template on a working platform, and taking down all support columns; (c) starting a welding machine, driving a middle template fixing plate and an upper template fixing plate to move downwards along a guide rail by an air cylinder, driving the middle template and the upper template to move downwards together, and welding by an ultrasonic welding head and a hot riveting welding head on the upper template after a plastic piece to be welded is pressed by a pressing point on the middle template; (d) after welding, the middle template and the upper template move upwards, the welded plastic part is taken out, and a new plastic part to be welded is put in to continue welding of the next product.
Further, the welding tool is transferred to a working platform of the welding machine through a roller on the surface of the die changing trolley, and the height of the roller is equal to that of the working platform.
Furthermore, the vertical projections of the ultrasonic welding joints and the hot-rivet welding joints on the upper die plate of the welding tool are positioned in the vertical projections of the pressing points on the middle die plate, the number of the ultrasonic welding joints is 7, and the number of the hot-rivet welding joints is 1.
Furthermore, the bottom of the welding machine is provided with a caster.
Compared with the prior art, the invention has the following beneficial effects: (1) the compression and welding of the plastic part are automatically carried out simultaneously, the sufficient compression force generated by the air cylinder can ensure good welding effect, the production efficiency and the yield are greatly improved, the batch production verifies that the welding speed is improved to 3 minutes per part from 15 minutes per part of original manual welding, and the welding qualification rate is improved to nearly 100% from 75%; (2) the welding equipment is flexible, can be fixed at one position for use and can also be moved to a corresponding working area, the welding tool is time-saving and labor-saving to install and dismount, and the labor intensity is greatly reduced.
Drawings
FIG. 1 is a schematic view of the working principle of the welding apparatus of the present invention;
FIG. 2 is a schematic view of a welding tool according to the present invention;
FIG. 3 is a schematic view of the welding apparatus of the present invention.
The plastic part welding method comprises the following steps of 1-plastic part 1, 2-plastic part 2, 3-welding tool, 4-ultrasonic welding head, 5-hot riveting welding head, 6-upper template, 7-middle template, 8-lower template, 9-pressing point, 10-supporting column, 11-workbench, 12-guide rail, 13-middle template fixing plate, 14-upper template fixing plate, 15-air cylinder, 16-machine shell, 17-die changing trolley, 18-roller and 19-air cylinder.
Detailed Description
In order to make those skilled in the art fully understand the technical solutions and advantages of the present invention, the following embodiments are further described.
The automatic ultrasonic and hot rivet welding equipment for the plastic parts, as shown in fig. 1-3, mainly comprises three parts, namely a welding tool 3, a welding machine and a die changing trolley 17. Welding frock 3 mainly comprises cope match-plate pattern 6, well template 7 and lower bolster 8, and the surface symmetry is provided with 7 ultrasonic bonding head 4 and 1 hot rivet welding head 5 (the flexible increase and decrease of working of plastics size can all be seen to the quantity of soldered connection) under cope match-plate pattern 6, is provided with pressure point 9 on well template. The ultrasonic weld joint 4 and the hot rivet joint 5 are within a range of a plurality of pressure points when viewed from above.
Before welding, the upper die plate and the middle die plate of the welding tool as well as the middle die plate and the lower die plate of the welding tool are supported through a plurality of supporting columns. During welding, a welding tool is placed on the roller 18 on the upper surface of the die changing trolley 17, the height of the roller is equal to the height of the working platform 11 of the welding machine, and the welding tool can be pushed into the welding machine by a worker without difficulty. And then fixing the lower template 8 on the working platform 11, fixing the middle template 7 on the middle template fixing plate 13, fixing the upper template 6 on the upper template fixing plate 14, and removing the supporting columns among the templates after the fixing is finished. And starting the welding machine, driving the middle template fixing plate 13 and the upper template fixing plate 14 to move downwards along the guide rail 12 in the welding machine by the air cylinder 19 and the air cylinder 15 respectively, driving the middle template 7 and the upper template 6 to move downwards together to a proper position, contacting and pressing pressure points on the middle template with the plastic parts 1 and 2 which are placed in advance, and starting welding the ultrasonic welding joint 4 and the hot riveting joint 5 on the upper template after the plastic parts are fixed in place. After welding, the two cylinders respectively drive the middle template fixing plate 13 and the upper template fixing plate 14 to move upwards along the guide rail 12, the middle template 7 and the upper template 6 are driven to move upwards together, and a welded plastic piece is taken out and put into the next plastic piece to be welded to enter the next welding period. After welding, the support columns are placed between the templates, then the screws of the templates are fixed, and the welding tool is taken out through the die changing trolley.
The universal wheels are arranged at the bottom of the welding machine and the bottom of the die changing trolley, so that the whole welding equipment can be conveniently moved to a corresponding working area, and the maneuvering flexibility of the welding equipment is improved.
Through batch production verification, the welding speed of the equipment is improved to 3 minutes per piece from 15 minutes per piece of original manual welding, the product percent of pass is improved to nearly 100 percent from 75 percent, the production efficiency of workers is greatly improved, the labor intensity is greatly reduced, and automatic welding is basically realized.
Claims (2)
1. An automatic ultrasonic and hot rivet welding device for plastic parts is characterized by comprising a welding tool, a welding machine and a die changing trolley; the welding tool comprises an upper template, a middle template, a lower template and a plurality of supporting columns for supporting the upper template, the middle template and the lower template before and after welding, wherein an ultrasonic welding head and a hot rivet welding head are arranged on the upper template, a pressing point is arranged on the middle template, the vertical projection of the ultrasonic welding head and the hot rivet welding head on the upper template is positioned inside the vertical projection of the pressing point on the middle template, the number of the ultrasonic welding heads is 7, and the number of the hot rivet welding heads is 1; the upper surface and the bottom of the die changing trolley are respectively provided with a roller and a caster, and the height of the roller is equal to that of a workbench of the welding machine; the welding machine comprises a workbench, a guide rail, a middle template fixing plate, an upper template fixing plate and a casing, wherein the workbench is used for fixing a lower template of a welding tool; the middle template fixing plate and the upper template fixing plate do linear motion along the guide rail so as to drive the upper template and the middle template to move, after the upper template and the middle template move to a certain position, a pressing point on the middle template presses and fixes a plastic piece placed on the lower template, and an ultrasonic welding head and a hot riveting welding head on the upper template are used for welding; the use method of the device comprises the following steps:
(a) placing a middle template of the welding tool on a lower template through a support column, then placing an upper template on the middle template through the support column, and then transferring the welding tool to a workbench of a welding machine through a roller on the surface of a die changing trolley;
(b) fixing an upper template on an upper template fixing plate, fixing a middle template on a middle template fixing plate, fixing a lower template on a working platform, and taking down all support columns;
(c) starting a welding machine, driving a middle template fixing plate and an upper template fixing plate to move downwards along a guide rail by an air cylinder, driving the middle template and the upper template to move downwards together, and welding by an ultrasonic welding head and a hot riveting welding head on the upper template after a plastic piece to be welded is pressed by a pressing point on the middle template;
(d) after welding, the middle template and the upper template move upwards, the welded plastic piece is taken out, and a new plastic piece to be welded is put in for continuous welding;
(e) after welding, the support columns are placed between the templates, then the screws of the templates are fixed, and the welding tool is taken out through the die changing trolley.
2. An automated ultrasonic and hot rivet welding apparatus for plastic articles according to claim 1, further comprising: the middle template fixing plate and the upper template fixing plate are driven by different cylinders to do linear motion along the guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711324734.5A CN108145980B (en) | 2017-12-13 | 2017-12-13 | Automatic ultrasonic-hot rivet welding equipment for plastic parts and welding method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711324734.5A CN108145980B (en) | 2017-12-13 | 2017-12-13 | Automatic ultrasonic-hot rivet welding equipment for plastic parts and welding method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108145980A CN108145980A (en) | 2018-06-12 |
| CN108145980B true CN108145980B (en) | 2020-11-10 |
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| CN201711324734.5A Active CN108145980B (en) | 2017-12-13 | 2017-12-13 | Automatic ultrasonic-hot rivet welding equipment for plastic parts and welding method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112192846A (en) * | 2019-08-27 | 2021-01-08 | 必尚自动化技术(上海)有限公司 | Ultrasonic welding equipment |
| CN110561759A (en) * | 2019-09-05 | 2019-12-13 | 上海海泰汽配有限公司 | Side wall welding tool |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071936A (en) * | 2013-01-24 | 2013-05-01 | 芜湖新宝超声波设备有限公司 | Sedan quarter window ultrasonic hot riveting and welding integrated machine |
| CN107350666A (en) * | 2017-05-17 | 2017-11-17 | 柳州双林汽车部件科技有限公司 | Programmable gate plate weld mould |
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2017
- 2017-12-13 CN CN201711324734.5A patent/CN108145980B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071936A (en) * | 2013-01-24 | 2013-05-01 | 芜湖新宝超声波设备有限公司 | Sedan quarter window ultrasonic hot riveting and welding integrated machine |
| CN107350666A (en) * | 2017-05-17 | 2017-11-17 | 柳州双林汽车部件科技有限公司 | Programmable gate plate weld mould |
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| CN108145980A (en) | 2018-06-12 |
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