CN111660579A - TPV sealing strip fixed-length precision cutting method - Google Patents
TPV sealing strip fixed-length precision cutting method Download PDFInfo
- Publication number
- CN111660579A CN111660579A CN202010460161.4A CN202010460161A CN111660579A CN 111660579 A CN111660579 A CN 111660579A CN 202010460161 A CN202010460161 A CN 202010460161A CN 111660579 A CN111660579 A CN 111660579A
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- China
- Prior art keywords
- sealing strip
- precision cutting
- size
- cutting
- fixed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
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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
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
- B29C66/02241—Cutting, e.g. by using waterjets, or sawing
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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
- B29L2031/00—Other particular articles
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
- B29L2031/265—Packings, Gaskets
Abstract
The invention discloses a fixed-length precision cutting method for TPV (thermoplastic vulcanizate) sealing strips, which comprises the following specific steps of firstly carrying out a primary precision cutting procedure on one end of the sealing strip, carrying out an angle connecting procedure on two sections of sealing strips by using an angle connecting mould, and carrying out a secondary precision cutting procedure on the other end of the sealing strip subjected to angle connecting according to the dimensional requirements of drawings. The method reduces errors generated in the manufacturing process, ensures the consistency of the precision cutting size tolerance through one-time precision cutting after the corner connecting process, eliminates the size change caused by unstable size of the front process to the rear process, realizes the fixed length precision cutting of the sealing strip, solves the size error in the tooling process, controls the whole size tolerance within +/-1mm, solves the problems of part process quality and product scrap caused by the size of the corner connecting due to the process missing cutting and the size over-tolerance, cancels a measuring station of a specially-assigned person, ensures the activity of the precision cutting end part, is used at the moment when cutting, improves the corner connecting quality and reduces the production cost.
Description
Technical Field
The invention relates to the technical field of automobile part assembly, in particular to a fixed-length precision cutting method for a TPV sealing strip.
Background
The sealing performance is an important index of the quality of the whole automobile, the automobile sealing strip is used as an organic component of the sealing structure of the whole automobile and is also an important component of the sealing performance of the whole automobile, and particularly the door and window glass guide groove sealing strip needs to ensure the high matching with a window frame in the installation process.
Because the large section of the automobile guide groove sealing strip has poor product flexibility, the requirement on the assembly size of the product is higher than that of a small section, and the tolerance of the large section is +/-2 mm.
The length of the existing automobile guide groove is manually measured, the length of the automobile guide groove required by each section of window frame is manually cut in batches according to the size requirement, the tolerance of the precision cutting length of the guide groove is usually controlled to +/-1mm, and the precision cutting process is easy to cause the problems of size exceeding the design tolerance and missing cutting quality; and selecting an automobile guide groove with proper length to carry out angle connection of two sections of automobile guide grooves, wherein the guide grooves with different sections and the guide groove in the middle section are generally combined and welded together, at least 2 corners of one guide groove need to be welded in an independent angle connection process, and the tolerance of each angle connection process is +/-1 mm. The mold is filled by manually looking at the position of the scale mark of the mold, the mold filling position has difference of each mold, and the tolerance accumulation of the two corner connecting processes can reach +/-2 mm; the accumulated tolerance of the sizes of the three processes is +/-3mm, and the three processes are out of tolerance frequently, so that the guide groove and the window frame of the automobile are difficult to assemble, waste products and poor sealing performance are caused, and whether the guide groove of the automobile is qualified or not needs to be manually detected before the assembly of the guide groove of the automobile with the corner connection is finished.
Disclosure of Invention
The invention aims to provide a fixed-length precision cutting method for a TPV sealing strip, which aims to solve the problems in the prior art, reduce the tolerance of a corner connecting process, improve the matching precision of products and reduce the rejection rate.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a fixed-length precision cutting method for TPV (thermoplastic vulcanizate) sealing strips, which comprises the following specific steps of firstly carrying out a primary precision cutting procedure on one end of a sealing strip, carrying out an angle connecting procedure on two sections of sealing strips by using an angle connecting mould, and carrying out a secondary precision cutting procedure on the other end of the sealing strip which is subjected to angle connecting according to the dimensional requirement of a drawing.
Preferably, the dimensional tolerances of the primary finish-cutting process and the secondary finish-cutting process are within +/-1 mm.
Preferably, the dimensional tolerances of the corner joining process are within +/-1 mm.
Preferably, in the secondary fine cutting process, the corner connecting end part of the sealing strip is accurately positioned, and then the sealing strip is placed in the positioning groove for fine cutting.
Preferably, the primary fine cutting procedure and the secondary fine cutting procedure are fixed-length primary fine cutting molding carried out by driving a cutter by an air cylinder.
Compared with the prior art, the invention has the following technical effects:
the method reduces errors generated in the manufacturing process, ensures the consistency of the precision cutting size tolerance through one-time precision cutting after the corner connecting process, eliminates the size change caused by unstable size of the front process to the rear process, realizes the fixed length precision cutting of the sealing strip, solves the size error in the tooling process, controls the whole size tolerance within +/-1mm, solves the problems of part process quality and product scrap caused by the size of the corner connecting due to the process missing cutting and the size over-tolerance, cancels a measuring station of a specially-assigned person, ensures the activity of the precision cutting end part, is used at the moment when cutting, improves the corner connecting quality and reduces the production cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of a corner joint in the fixed-length precision cutting method of the TPV sealing strip of the invention;
FIG. 2 is a partial enlarged view of a corner connecting structure of the TPV sealing strip fixed-length precision cutting method of the invention;
FIG. 3 is a schematic structural diagram of a precision cutting device in the fixed-length precision cutting method for the TPV sealing strip of the invention;
FIG. 4 is a schematic cross-sectional view of a sealing strip in the fixed-length precision cutting method for the TPV sealing strip of the invention;
wherein: 1-sealing strip, 2-positioning groove and 3-cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a fixed-length precision cutting method for a TPV sealing strip, which aims to solve the problems in the prior art, reduce the tolerance of a corner connecting process, improve the matching precision of products and reduce the rejection rate.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 4: the embodiment provides a fixed-length precision cutting method for TPV (thermoplastic vulcanizate) sealing strips, which comprises the following specific steps of firstly carrying out a primary precision cutting process on one end of a sealing strip 1, carrying out an angle connecting process on two sections of sealing strips 1 by using an angle connecting mould, and then carrying out a secondary precision cutting process on the other end of the sealing strip 1 with the angle being completed according to the size requirement of a drawing.
The dimensional tolerance of the primary fine cutting procedure and the secondary fine cutting procedure is within +/-1 mm; the dimensional tolerance of the corner joint process is within +/-1 mm. In the secondary fine cutting process, the corner connecting end part of the sealing strip 1 is accurately positioned, and then the sealing strip 1 is placed in the positioning groove 2 for fine cutting. In the embodiment, the precision cutting device shown in fig. 3 is used for carrying out the precision cutting process on the sealing strip 1, the operation is convenient and fast, and the primary precision cutting process and the secondary precision cutting process are fixed-length primary precision cutting molding carried out by driving the cutter by the cylinder 3.
The method of the embodiment reduces the tolerance caused by the corner connecting process once, ensures the consistency of the precision cutting size tolerance through one-time precision cutting after the corner connecting process, eliminates the size change caused by the unstable size of the previous process for the subsequent process, realizes the fixed length precision cutting of the sealing strip 1, solves the size error in the tooling process, controls the whole size tolerance within +/-1mm, solves the problems of part process quality and product scrap caused by the overlong size of the corner connecting due to the missing cutting of the process, cancels a special person to measure a station, simultaneously ensures the activity of the precision cutting end part, is used as the current cutting, improves the corner connecting quality and reduces the production cost.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (5)
1. A TPV sealing strip fixed-length precision cutting method is characterized in that: the method comprises the steps of firstly carrying out a primary fine cutting process on one end of a sealing strip, carrying out an angle connecting process on two sections of sealing strips by using an angle connecting mould, and carrying out a secondary fine cutting process on the other end of the sealing strip which is subjected to angle connection according to the size requirement of a drawing.
2. The fixed-length precision cutting method of the TPV sealing strip according to claim 1, which is characterized in that: the dimensional tolerance of the primary fine cutting procedure and the secondary fine cutting procedure is within +/-1 mm.
3. The fixed-length precision cutting method of the TPV sealing strip according to claim 1, which is characterized in that: the dimensional tolerances of the corner joint process are within +/-1 mm.
4. The fixed-length precision cutting method of the TPV sealing strip according to claim 1, which is characterized in that: in the secondary fine cutting process, the corner connecting end part of the sealing strip is accurately positioned, and then the sealing strip is placed in the positioning groove for fine cutting.
5. The TPV sealing strip fixed-length fine cutting method according to claim 4, wherein: the primary fine cutting procedure and the secondary fine cutting procedure are fixed-length primary fine cutting molding carried out by driving a cutter by a cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460161.4A CN111660579A (en) | 2020-05-27 | 2020-05-27 | TPV sealing strip fixed-length precision cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460161.4A CN111660579A (en) | 2020-05-27 | 2020-05-27 | TPV sealing strip fixed-length precision cutting method |
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| Publication Number | Publication Date |
|---|---|
| CN111660579A true CN111660579A (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010460161.4A Pending CN111660579A (en) | 2020-05-27 | 2020-05-27 | TPV sealing strip fixed-length precision cutting method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274490A (en) * | 2007-03-30 | 2008-10-01 | 上海和达汽车配件有限公司 | Manufacturing system for inside seal of vehicle window |
| AT512088A1 (en) * | 2011-11-07 | 2013-05-15 | Fux Maschb U Kunststofftechnik Gmbh | METHOD AND DEVICE FOR CONNECTING SEALING PROFILES |
| CN103707955A (en) * | 2013-12-30 | 2014-04-09 | 长城汽车股份有限公司 | Sealing strip bonding equipment |
| CN105773913A (en) * | 2014-12-20 | 2016-07-20 | 贵州贵航汽车零部件股份有限公司 | Manufacturing process of inner connecting angle of vehicle glass guide groove sealing strip and injection mold |
| CN210389304U (en) * | 2019-08-19 | 2020-04-24 | 宁海建新自动化设备有限公司 | Fixed-length punching device for automobile sealing strips |
-
2020
- 2020-05-27 CN CN202010460161.4A patent/CN111660579A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274490A (en) * | 2007-03-30 | 2008-10-01 | 上海和达汽车配件有限公司 | Manufacturing system for inside seal of vehicle window |
| AT512088A1 (en) * | 2011-11-07 | 2013-05-15 | Fux Maschb U Kunststofftechnik Gmbh | METHOD AND DEVICE FOR CONNECTING SEALING PROFILES |
| CN103707955A (en) * | 2013-12-30 | 2014-04-09 | 长城汽车股份有限公司 | Sealing strip bonding equipment |
| CN105773913A (en) * | 2014-12-20 | 2016-07-20 | 贵州贵航汽车零部件股份有限公司 | Manufacturing process of inner connecting angle of vehicle glass guide groove sealing strip and injection mold |
| CN210389304U (en) * | 2019-08-19 | 2020-04-24 | 宁海建新自动化设备有限公司 | Fixed-length punching device for automobile sealing strips |
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Application publication date: 20200915 |