CN113910534A - Method for preventing glue overflow during secondary injection molding of sliding seat - Google Patents
Method for preventing glue overflow during secondary injection molding of sliding seat Download PDFInfo
- Publication number
- CN113910534A CN113910534A CN202111097294.0A CN202111097294A CN113910534A CN 113910534 A CN113910534 A CN 113910534A CN 202111097294 A CN202111097294 A CN 202111097294A CN 113910534 A CN113910534 A CN 113910534A
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- CN
- China
- Prior art keywords
- sliding seat
- injection molding
- secondary injection
- sliding
- seat
- Prior art date
- 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.)
- Pending
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003292 glue Substances 0.000 title claims abstract description 18
- 238000000465 moulding Methods 0.000 claims description 8
- 239000011324 bead Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/007—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass injection moulding tools
Abstract
The invention discloses a method for preventing glue overflow during secondary injection molding of a sliding seat.
Description
Technical Field
The invention relates to the field of guiding equipment, in particular to a method for preventing glue overflow in secondary injection molding of a sliding seat.
Background
And (3) secondary injection molding: is a special plastic molding process, also called as beer covering or rubber coating. It is similar to the double-color forming process, but has a larger difference with the double-color forming process. The method is a process for molding a certain plastic raw material in a primary plastic mold, taking out the molded part, and injecting the same or another plastic material into a secondary molding mold again. More complicated is the multiple molding, which makes the shape and process of the plastic product meet the desired requirements, called the two-shot molding. Of course, the metal workpiece is coated with a corresponding injection-molded part, also referred to as overmolding.
In the field of guide devices, in particular linear motion guides, comprising a linear slide and a slide that moves on the slide; in order to ensure the smoothness of the sliding seat moving on the sliding rail, the sliding seat is required to be provided with balls, so that the sliding seat is subjected to secondary injection molding to form an injection molding part, and the injection molding part is provided with a ball circulation passage (a ball groove) for moving the balls, and an upper retainer, a middle retainer and a lower retainer which are used for sealing and preventing dust of the ball circulation passage and are kept in contact with the sliding rail.
The surface of the sliding seat, which is in contact with the sliding rail, is a reference surface, two ends of the sliding seat are end surfaces, and when the sliding seat is subjected to secondary injection molding to form an injection molding part, the injection molding part usually protrudes out of the end surfaces; at present, when the sliding seat is subjected to secondary injection molding, the datum plane of the sliding seat is firstly ground, so that the fit among a cavity, a core and the datum plane of the sliding seat of a mold meets the injection molding requirement during the secondary injection molding, and the problems of glue overflow and the like can not occur; however, in actual production, when the slide seat is fixed in the cavity, the injection molding part protrudes from the end surface of the slide seat, so that the mold has a corresponding cavity and a corresponding core structure matched with each other at the end surface of the slide seat to form the injection molding part, and during secondary injection molding, the end surface of the slide seat occasionally has an excessive glue phenomenon, and the excessive glue phenomenon is caused by insufficient flatness of the end surface of the slide seat, so that the excessive glue is caused, and the service life of the mold is even reduced.
Disclosure of Invention
In view of the above, it is desirable to provide a method for preventing flash of a slider during secondary injection molding.
In order to solve the technical problems, the technical scheme of the invention is as follows: a method for preventing glue overflow of a sliding seat in a secondary injection molding process is carried out according to the following steps:
s1, machining a sliding seat;
s2, grinding the reference surface of the sliding seat until the reference surface meets the requirement of preset flatness;
s3, molding and grinding the sliding seat;
s4, grinding the two end faces of the sliding seat until the requirements of the preset flatness are met;
and S5, placing the sliding seat into a mold for secondary injection molding operation.
Further, in step S4, the end surface of the slider is ground using a magnetic grinder.
Furthermore, the magnetic type grinding machine is provided with an electromagnetic magnetic seat, the upper surface of the electromagnetic magnetic seat is magnetically connected with a guide block, the guide block is perpendicular to the upper surface of the electromagnetic magnetic seat, and the guide block is in sliding connection with the bead groove of the sliding seat.
Furthermore, the guide block is provided with a limiting part which limits the sliding seat to rotate on the horizontal plane.
Further, in step S4, the electromagnetic magnetic base is opened first to make the guiding block magnetically adsorbed on the electromagnetic magnetic base, the sliding base is placed on the guiding block, when the sliding base descends to the lowest position along the guiding block, the lowest position of the bottom end surface of the sliding base contacts with the upper surface of the electromagnetic magnetic base, and the grinding tool of the magnetic grinding machine grinds the upper end surface of the sliding base.
Further, in step S1, the machined slider is subjected to a surface hardening heat treatment.
Compared with the prior art, the invention has the following beneficial effects: according to the method, after the reference surface of the sliding seat is ground, the forming grinding is carried out, and finally the magnetic type grinding machine is used for grinding the two end surfaces of the sliding seat, so that the flatness of each surface of the sliding seat, which is in contact with a mold, meets the design requirement when the sliding seat is subjected to secondary injection molding, the phenomenon of glue overflow of each surface can be avoided when the sliding seat is subjected to secondary injection molding, the service life of the mold is prolonged, and the yield of products is improved.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1-electromagnetic magnetic seat, 11-guide block, 2-slide seat, 21-datum plane, 22-end plane and 23-bead groove.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
As shown in FIG. 1, a method for preventing glue overflow by secondary injection molding of a sliding seat comprises the following steps:
s1, machining a sliding seat 2;
s2, performing surface hardening heat treatment on the machined sliding seat 2;
s3, grinding the reference surface 21 of the sliding seat 2 until the flatness of the reference surface 21 meets the design requirement;
s4, molding and grinding the sliding seat 2;
s5, grinding the two end faces 22 of the sliding seat 2 by using a magnetic grinding machine respectively until the flatness of the two end faces 22 of the sliding seat 2 meets the design requirement;
and S6, placing the sliding seat 2 into a mould to perform secondary injection molding operation.
In this embodiment, the magnetic attraction type grinder has an electromagnetic magnetic base 1, a guide block 11 is magnetically connected to the upper surface of the electromagnetic magnetic base 1, and a limit portion for limiting the rotation of the sliding base on the horizontal plane is provided on the side wall of the guide block 11; the guide block 11 is vertical to the upper surface of the electromagnetic magnetic seat 1, and the guide block 11 is connected with the bead groove 23 of the sliding seat 2 in a sliding way.
In this embodiment, in step S5, when the magnetic grinder is used to grind the end surface of the slide seat, the electromagnetic seat is first opened to make the guiding block magnetically adsorbed on the electromagnetic seat, the slide seat is placed on the guiding block, the guiding block is sleeved in the bead groove of the slide seat, when the slide seat falls to the lowest position along the guiding block, the lowest position of the end surface at the bottom of the slide seat contacts with the upper surface of the electromagnetic seat, and the grinding tool of the magnetic grinder grinds the end surface at the upper part of the slide seat. After one end face of the slide is ground, the slide is ground in reverse to the other end face. Until the flatness of the two end surfaces of the sliding seat meets the design requirement.
Through the grinding of increase to the terminal surface of slide for the slide is when carrying out the secondary and moulding plastics, and the possibility of glue is taken place to overflow by further reduction slide on the terminal surface, avoids simultaneously because the unevenness of slide terminal surface, takes place to interfere in slide terminal surface department when leading to the mould compound die, influences the life of mould.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A method for preventing glue overflow of a sliding seat in a secondary injection molding mode is characterized by comprising the following steps:
s1, machining a sliding seat;
s2, grinding the reference surface of the sliding seat until the reference surface meets the requirement of preset flatness;
s3, molding and grinding the sliding seat;
s4, grinding the two end faces of the sliding seat until the requirements of the preset flatness are met;
and S5, placing the sliding seat into a mold for secondary injection molding operation.
2. The method for preventing glue overflow of the sliding seat in the secondary injection molding process according to claim 1, is characterized in that: in step S4, the end surface of the slide is ground using a magnetic grinder.
3. The method for preventing glue overflow of the sliding seat in the secondary injection molding process according to claim 2, is characterized in that: the magnetic attraction type grinding machine is provided with an electromagnetic magnetic seat, the upper surface of the electromagnetic magnetic seat is magnetically connected with a guide block, the guide block is perpendicular to the upper surface of the electromagnetic magnetic seat, and the guide block is in sliding connection with a bead groove of a sliding seat.
4. The method for preventing glue overflow of the sliding seat in the secondary injection molding process according to claim 3, is characterized in that: the guide block is provided with a limiting part which limits the sliding seat to rotate on the horizontal plane.
5. The method for preventing glue overflow of the sliding seat in the secondary injection molding process according to claim 4, is characterized in that: in step S4, the electromagnetic magnetic base is first opened to make the guiding block magnetically adsorbed on the electromagnetic magnetic base, the sliding base is set on the guiding block, when the sliding base descends to the lowest position along the guiding block, the lowest position of the bottom end surface of the sliding base contacts the upper surface of the electromagnetic magnetic base, and the grinding tool of the magnetic-type grinder grinds the upper end surface of the sliding base.
6. The method for preventing glue overflow of the sliding seat in the secondary injection molding process according to claim 1, is characterized in that: in step S1, the machined slider is subjected to a surface hardening heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111097294.0A CN113910534A (en) | 2021-09-18 | 2021-09-18 | Method for preventing glue overflow during secondary injection molding of sliding seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111097294.0A CN113910534A (en) | 2021-09-18 | 2021-09-18 | Method for preventing glue overflow during secondary injection molding of sliding seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113910534A true CN113910534A (en) | 2022-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111097294.0A Pending CN113910534A (en) | 2021-09-18 | 2021-09-18 | Method for preventing glue overflow during secondary injection molding of sliding seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113910534A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202129718U (en) * | 2011-03-30 | 2012-02-01 | 芜湖瑞和机电有限公司 | Lifting workbench of end face grinder |
| TWM482473U (en) * | 2014-04-11 | 2014-07-21 | Holding Electric Co Ltd | Magnetic grinding machine with lifting device |
| CN105666784A (en) * | 2014-11-21 | 2016-06-15 | 李茂碷 | Cladding injection molding method and structure for linear slide block |
| CN112388902A (en) * | 2020-11-02 | 2021-02-23 | 王金祥 | Positioning method and jig for secondary injection molding of sliding seat |
| CN112496878A (en) * | 2020-12-15 | 2021-03-16 | 辽宁科技大学 | Magnetic particle grinding device and method for profiling inner surface of pipe fitting |
-
2021
- 2021-09-18 CN CN202111097294.0A patent/CN113910534A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202129718U (en) * | 2011-03-30 | 2012-02-01 | 芜湖瑞和机电有限公司 | Lifting workbench of end face grinder |
| TWM482473U (en) * | 2014-04-11 | 2014-07-21 | Holding Electric Co Ltd | Magnetic grinding machine with lifting device |
| CN105666784A (en) * | 2014-11-21 | 2016-06-15 | 李茂碷 | Cladding injection molding method and structure for linear slide block |
| CN112388902A (en) * | 2020-11-02 | 2021-02-23 | 王金祥 | Positioning method and jig for secondary injection molding of sliding seat |
| CN112496878A (en) * | 2020-12-15 | 2021-03-16 | 辽宁科技大学 | Magnetic particle grinding device and method for profiling inner surface of pipe fitting |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Jinxiang Inventor after: Zhong Liang Inventor before: Wang Jinxiang |
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| CB03 | Change of inventor or designer information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |