CN111421827A - Polyester material friction welding head based on high-frequency vibration and pressure adjusting method - Google Patents
Polyester material friction welding head based on high-frequency vibration and pressure adjusting method Download PDFInfo
- Publication number
- CN111421827A CN111421827A CN202010248851.3A CN202010248851A CN111421827A CN 111421827 A CN111421827 A CN 111421827A CN 202010248851 A CN202010248851 A CN 202010248851A CN 111421827 A CN111421827 A CN 111421827A
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- China
- Prior art keywords
- pressing block
- friction welding
- welding head
- supporting pressing
- elastic piece
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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
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2028/00—Nets or the like
Abstract
The invention discloses a polyester material friction welding head based on high-frequency vibration and a pressure adjusting method, wherein the polyester material friction welding head comprises a supporting pressing block which is driven by a lifting driving piece to move up and down, and a plurality of friction welding heads which are movably hung on the supporting pressing block up and down, each friction welding head comprises a rod-shaped part extending into the supporting pressing block and a welding head fixed at the lower end of the rod-shaped part, an elastic piece is sleeved outside the rod-shaped part, one end of the elastic piece abuts against the supporting pressing block, the other end of the elastic piece abuts against the surface of the welding head, and a plurality of needle plate structures are arranged on the lower surface of the welding head in an array mode. The invention can ensure that each welding point can obtain the downward pressure meeting the requirements of technological parameters, thereby ensuring the welding quality.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of new material welding, and particularly relates to a polyester material friction welding head based on high-frequency vibration.
[ background of the invention ]
The PET material is a crystalline polyester material, the molecular arrangement is ordered, and the PET material has obvious melting point and refreezing point; the solid crystal polymer is elastic and can absorb part of high-frequency mechanical vibration, so that when an ultrasonic welding mode is used, the ultrasonic vibration energy cannot easily transmit the vibration energy to the laminating surface, and the temperature required by the welding of the laminating surface can be obtained only by continuously improving the amplitude and the vibration time; however, too high amplitude and vibration time can damage the PET material above the ultrasonic and laminating surfaces and the molecular structure of the PET material, so that the strength is reduced and the breaking elongation is increased, and the domestic PET geogrid welded and formed by the method generally has low stripping force (less than 100N) which is far lower than the quality requirement of the similar products (less than 150N) at abroad. Because the width of the PET geogrid is as high as 6 meters, hundreds of laminating surfaces are welded simultaneously in the same latitudinal direction, the laminating force difference of each laminating surface is large due to the thickness difference of the material of the geogrid material belt, and the difference of poor stripping rate (insufficient welding) and deformation and poor strength (excessive welding) of the material belt occurs in the same latitudinal direction after welding is finished, so that the qualification rate of finished products is reduced and the construction difficulty is increased.
The soldered connection among the prior art generally all is integral rigidity power of pushing down, when the uneven high deviation that appears in thickness of PET strip, can lead to the welding point highly inconsistent, if increase the overdraft, then the overwelding phenomenon can appear in the high point position, and intensity step-down if the overdraft is not enough, then the welding point of low point department can not weld.
Therefore, there is a need to provide a new friction welding head based on polyester material with high frequency vibration to solve the above problems.
[ summary of the invention ]
One of the main purposes of the invention is to provide a polyester material friction welding head based on high-frequency vibration, which can ensure that each welding point can obtain down force meeting the requirements of technological parameters and ensure the welding quality.
The invention realizes the purpose through the following technical scheme: the utility model provides a polyester material friction bonding tool based on high-frequency vibration, its includes that one is carried out up-and-down motion by the drive of lift driving piece and supports the briquetting, upper and lower mobilizable a plurality of friction bonding head of establishing of hanging on supporting the briquetting, friction bonding head is including stretching into support briquetting inside shaft-like portion, fixing the bonding tool of shaft-like portion lower extreme, shaft-like portion overcoat is equipped with an elastic component, the one end of elastic component is supported and is held support briquetting and the other end support and hold bonding tool surface, the lower surface array of bonding tool is provided with a plurality of faller structures and forms the friction welding working face.
Furthermore, a through hole for the rod-shaped part to move up and down is arranged in the supporting pressing block.
Furthermore, the supporting pressing block is provided with a plurality of groups of synchronous welding points.
Another object of the present invention is to provide a method for adjusting the pressure of a friction welding head made of polyester material based on high-frequency vibration, which comprises the following steps:
1) a pressure sensor is arranged below each friction welding joint, and the sensing surfaces of all the pressure sensors are arranged on the same horizontal plane;
2) spring adjusting pieces which correspond to the friction welding joints one by one and can adjust the elastic coefficient of the elastic piece are arranged on the lower surface of the supporting pressing block;
3) driving the supporting pressing block to drive the friction welding joint to descend to a set height to apply a corresponding pressure value to the pressure sensor, observing a value of the corresponding pressure sensor, and if the value is smaller than the set value, correspondingly adjusting the position of the spring adjusting piece downwards, and increasing the compression amount of the elastic piece to enable the elastic piece to reach the pressure of the set value; if the value is larger than the set value, the position of the spring adjusting piece is correspondingly adjusted upwards, and the compression amount of the elastic piece is reduced until the value is equal to the set value.
Furthermore, the upper end of the elastic piece is abutted against the bottom surface of the spring adjusting piece, and the spring adjusting piece is screwed on the supporting pressing block in an up-and-down adjustable mode through threads.
Compared with the prior art, the polyester material friction welding head based on high-frequency vibration and the pressure adjusting method have the beneficial effects that: selecting a proper elastic piece according to the required welding lower pressure, and then calculating the elastic deformation quantity required by the elastic piece to output the set lower pressure, so as to guide the lifting driving piece to drive the supporting pressing block to descend by the corresponding height, and ensure that each welding point can obtain the lower pressure with the set size; the change of the down pressure caused by the local height change of the PET grid strips does not influence the welding process parameters, thereby ensuring the grid welding effect.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of an embodiment of the present invention;
the figures in the drawings represent:
100 a polyester material friction welding head based on high-frequency vibration;
1 supporting a pressing block; 2 friction welding head, 21 rod part, 22 welding head and 23 friction welding working surface; 3, an elastic member; 4 spring adjustment.
[ detailed description ] embodiments
Example (b):
referring to fig. 1-2, the present embodiment provides a friction welding head 100 made of a polyester material based on high-frequency vibration, which includes a supporting pressing block 1 driven by a lifting driving member to move up and down, and a plurality of friction welding heads 2 suspended on the supporting pressing block 1 and movable up and down, wherein the friction welding heads 2 include a rod-shaped portion 21 extending into the supporting pressing block 1, and a welding head 22 fixed at a lower end of the rod-shaped portion 21, an elastic member 3 is sleeved outside the rod-shaped portion 21, one end of the elastic member 3 abuts against a surface of the supporting pressing block 1, and the other end abuts against a surface of the welding head 22, and a plurality of needle plates are arranged in an array on a lower surface.
The supporting pressing block 1 is provided with a through hole (not marked in the figure) for the rod part 21 to move up and down. The through hole can be a step hole, and the friction welding head 2 is hung by arranging an annular boss on the rod-shaped part 21 to be erected on the step hole. In another embodiment, the rod 21 may extend through the support compact 1, and the friction welding head 2 may be hung by locking a nut on the rod 21.
During welding, the lifting driving piece drives the supporting pressing block 1 to descend, and the lower surface of the friction welding head 2 contacts with a workpiece to be welded firstly; then the supporting pressing block 1 continuously descends, pressure is applied to the friction welding joint 2 by extruding the elastic piece 3, the pressing action force is provided for each welding point through the elastic deformation of the elastic piece 3, and the pressure change generated correspondingly to the elastic piece 3 in a small range is very small, so that the pressing force change caused by the local height change of the PET grid bars cannot influence the welding process parameters, and the grid welding effect is guaranteed.
This embodiment a polyester material friction bonding tool 100 based on high frequency vibration chooses suitable elastic component for use according to required welding overdraft size, then calculates the required elastic deformation volume of elastic component output settlement overdraft, thereby guides the drive of lift driving piece support briquetting 1 descends the height that corresponds, ensures that every welding point can both obtain the overdraft of settlement size.
In practical application, a plurality of friction welding joints 2 are arranged on one supporting pressing block 1, and in the embodiment, four supporting pressing blocks 1 are arranged and then a plurality of groups of supporting pressing blocks 1 are arranged to synchronously weld a plurality of welding points; and a plurality of supporting pressing blocks 1 are arranged in the same row and are matched with a plurality of pressure driving mechanisms, so that synchronous welding of hundreds of welding points is realized.
The embodiment also provides a pressure adjusting method for the polyester material friction welding head, which comprises the following steps:
1) a pressure sensor is arranged below each friction welding joint 2, and the sensing surfaces of all the pressure sensors are arranged on the same horizontal plane;
2) the lower surface of the supporting pressing block 1 is provided with spring adjusting pieces 4 which correspond to the friction welding joints 2 one by one, the upper end of the elastic piece 3 abuts against the bottom surface of the spring adjusting piece 4, and the spring adjusting piece 4 is screwed on the supporting pressing block 1 in an up-and-down adjustable manner through threads;
3) driving the supporting pressure block 1 to drive the friction welding joint 2 to descend to a set height to apply a corresponding pressure value to the pressure sensor, observing a value of the corresponding pressure sensor, if the value is smaller than the set value, correspondingly adjusting the position of the spring adjusting piece 4 downwards, and increasing the compression amount of the elastic piece 3 to enable the compression amount to reach the pressure of the set value; if the value is larger than the set value, the position of the spring adjusting piece 4 is adjusted upwards correspondingly, and the compression amount of the elastic piece 3 is reduced.
The pressure adjusting method for the polyester material friction welding head can correct and adjust all friction welding heads 2 before production of different batches of products or periodically, so that the uniform downward pressure can be kept in the friction welding process, and the welding precision and the welding quality are improved.
In the embodiment, the multi-point pressing mechanism is utilized, and the pressure of each pressing point can be independently controlled, so that the square pressure in the welding process can be accurately controlled, and the difference of the material thickness is higher in tolerance.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (5)
1. A polyester material friction welding head based on high-frequency vibration is characterized in that: the friction welding device comprises a supporting pressing block which is driven by a lifting driving piece to move up and down, and a plurality of friction welding heads which are movably hung up and down and arranged on the supporting pressing block, wherein each friction welding head comprises a rod-shaped portion extending into the supporting pressing block and a welding head fixed at the lower end of the rod-shaped portion, an elastic piece is sleeved outside the rod-shaped portion, one end of the elastic piece abuts against the supporting pressing block and the other end of the elastic piece abuts against the surface of the welding head, and a plurality of needle plate structures are arranged on the lower surface array of the welding head to form a friction.
2. A high frequency vibration based friction weld head of polyester material as defined in claim 1 wherein: and a through hole for the rod-shaped part to move up and down is arranged in the supporting pressing block.
3. A high frequency vibration based friction weld head of polyester material as defined in claim 1 wherein: the supporting pressing block is provided with a plurality of groups of welding points synchronously.
4. The method for adjusting the pressure of a friction welding head made of polyester based on high-frequency vibrations, according to claim 1, wherein: which comprises the following steps:
1) a pressure sensor is arranged below each friction welding joint, and the sensing surfaces of all the pressure sensors are arranged on the same horizontal plane;
2) spring adjusting pieces which correspond to the friction welding joints one by one and can adjust the elastic coefficient of the elastic piece are arranged on the lower surface of the supporting pressing block;
3) driving the supporting pressing block to drive the friction welding joint to descend to a set height to apply a corresponding pressure value to the pressure sensor, observing a value of the corresponding pressure sensor, and if the value is smaller than the set value, correspondingly adjusting the position of the spring adjusting piece downwards, and increasing the compression amount of the elastic piece to enable the elastic piece to reach the pressure of the set value; if the value is larger than the set value, the position of the spring adjusting piece is correspondingly adjusted upwards, and the compression amount of the elastic piece is reduced until the value is equal to the set value.
5. A high frequency vibration based friction weld head of polyester material as defined in claim 1 wherein: the upper end of the elastic piece is abutted against the bottom surface of the spring adjusting piece, and the spring adjusting piece is screwed on the supporting pressing block in an up-and-down adjustable mode through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010248851.3A CN111421827A (en) | 2020-04-01 | 2020-04-01 | Polyester material friction welding head based on high-frequency vibration and pressure adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010248851.3A CN111421827A (en) | 2020-04-01 | 2020-04-01 | Polyester material friction welding head based on high-frequency vibration and pressure adjusting method |
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| Publication Number | Publication Date |
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| CN111421827A true CN111421827A (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010248851.3A Pending CN111421827A (en) | 2020-04-01 | 2020-04-01 | Polyester material friction welding head based on high-frequency vibration and pressure adjusting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454494A (en) * | 2022-02-14 | 2022-05-10 | 浙江伊鲁博生物科技有限公司 | Welding wheel die for medical mask machine |
-
2020
- 2020-04-01 CN CN202010248851.3A patent/CN111421827A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454494A (en) * | 2022-02-14 | 2022-05-10 | 浙江伊鲁博生物科技有限公司 | Welding wheel die for medical mask machine |
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