CN112621129A - Preparation method and manufacturing equipment of U-shaped push rod for glue extruding gun - Google Patents
Preparation method and manufacturing equipment of U-shaped push rod for glue extruding gun Download PDFInfo
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- CN112621129A CN112621129A CN202011484622.8A CN202011484622A CN112621129A CN 112621129 A CN112621129 A CN 112621129A CN 202011484622 A CN202011484622 A CN 202011484622A CN 112621129 A CN112621129 A CN 112621129A
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- 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
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Abstract
The invention provides a preparation method and manufacturing equipment of a U-shaped push rod for a glue gun, wherein the preparation method comprises the following steps: obtaining a seamless rod, and performing at least one centerless grinding on the seamless rod until the diameter of the seamless rod falls into a preset range; turning M5 threads on two ends of the seamless rod; sand blasting the outer surface of the seamless rod by using steel balls; quenching the seamless rod at a preset temperature and for a preset time to enable the HRC of the seamless rod to be 58-61; the straightness of the seamless rod is corrected, so that the collimation of the seamless rod is between 0.05 and 0.1; bending the middle point of the seamless rod to form a first straight pipe and a second straight pipe which are positioned on two sides of the middle point, wherein the parallelism of the first straight pipe and the second straight pipe is within 0.5, and the end tolerance of the first straight pipe and the second straight pipe is within 1; scrap iron in the internal thread holes at the end parts of the first straight pipe and the second straight pipe is removed; and (6) oiling and packaging the seamless rod. After the technical scheme is adopted, the U-shaped push rod of the glue extruding gun which is easy to hold can be quickly prepared.
Description
Technical Field
The invention relates to the field of glue extruding guns, in particular to a preparation method and manufacturing equipment of a U-shaped push rod for a glue extruding gun.
Background
With the accelerated progress of the urbanization in China, the building scale and the maintenance and updating area of old buildings are continuously enlarged, the building functions and the decoration grade are gradually improved, and the demand of the silicone sealant which accounts for about 40 percent of the market share of the building sealant is continuously increased, so that the silicone sealant has good development prospects particularly in the projects of building energy conservation, water prevention, decoration, building curtain walls and the like. The usage amount and the demand amount of the silicone sealant packaging material are great, and the market space of the glue extruding gun is great.
Generally speaking, the U-shaped push rod of the glue gun is used for being held and pulled by a user, and if the U-shaped push rod is not integrally formed, the manufacturing process is complex and the U-shaped push rod is easy to fall off, so that a novel U-shaped push rod structure and a manufacturing method thereof are needed, and the U-shaped push rod of the glue gun with a simple structure is manufactured through a simple process.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide a preparation method and a manufacturing device of a U-shaped push rod for a glue extruding gun, which are used for quickly preparing the U-shaped push rod of the glue extruding gun which is easy to hold.
The invention discloses a preparation method of a U-shaped push rod for a glue gun, which comprises the following steps:
obtaining a seamless rod, and performing at least one centerless grinding on the seamless rod until the diameter of the seamless rod falls into a preset range;
turning M5 threads on two ends of the seamless rod;
sand blasting the outer surface of the seamless rod by using steel balls;
quenching the seamless rod at a preset temperature and for a preset time to enable the HRC of the seamless rod to be 58-61;
the straightness of the seamless rod is corrected, so that the collimation of the seamless rod is between 0.05 and 0.1;
bending the middle point of the seamless rod to form a first straight pipe and a second straight pipe which are positioned on two sides of the middle point, wherein the parallelism of the first straight pipe and the second straight pipe is within 0.5, and the end tolerance of the first straight pipe and the second straight pipe is within 1;
scrap iron in the internal thread holes at the end parts of the first straight pipe and the second straight pipe is removed;
and (6) oiling and packaging the seamless rod.
Preferably, in the step of obtaining a seamless rod, the seamless rod is model 45# seamless rod having a diameter of 8mm and a length of 640mm, and centerless grinding the seamless rod at least once until the diameter of the seamless rod falls within a predetermined range.
Preferably, the preset range is 7.75 — 0.03 mm.
Preferably, in the step of turning M5 threads on both ends of the seamless rod, the depth of MM5 threads is 12 MM.
Preferably, in the step of quenching the seamless rod at a preset temperature and for a preset time so that the HRC of the seamless rod is 58-61, the quenching temperature is 850-900 ℃ and the aging temperature is 180 ℃ for one hour.
Preferably, the middle point of the seamless rod is bent to form a first straight pipe and a second straight pipe which are positioned at two sides of the middle point, the parallelism of the first straight pipe and the second straight pipe is within 0.5, the end tolerance of the first straight pipe and the second straight pipe is within 1, and the step of removing the scrap iron in the threaded holes at the ends of the first straight pipe and the second straight pipe further comprises the following steps:
and checking the parallelism of the first straight pipe and the second straight pipe by using the checking fixture, and machining by using a machine tool for twice to ensure the parallelism of the first straight pipe and the second straight pipe.
The invention also discloses a manufacturing device for preparing the U-shaped push rod for the glue gun, which comprises the following components:
the grinding device receives the seamless rod and performs centerless grinding on the seamless rod at least once until the diameter of the seamless rod falls into a preset range;
the turning device is used for turning M5 threads on two ends of the seamless rod;
a sand blaster for blasting sand to the outer surface of the seamless rod by using steel balls;
the quenching device is used for quenching the seamless rod at a preset temperature and for a preset time length to ensure that the HRC of the seamless rod is 58-61;
the corrector corrects the straightness of the seamless rod, so that the collimation of the seamless rod is between 0.05 and 0.1;
the pipe bender bends at the middle point of the seamless rod to form a first straight pipe and a second straight pipe which are positioned at two sides of the middle point, the parallelism of the first straight pipe and the second straight pipe is within 0.5, and the end tolerance of the first straight pipe and the second straight pipe is within 1;
the scrap remover is used for removing scrap iron in the internal thread holes at the end parts of the first straight pipe and the second straight pipe;
and the packer is used for oiling and packaging the seamless rod.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. by arranging the two push rods into an integrated U-shaped rod, compared with the double push rod combination connected through a bolt in the prior art, the push force is more balanced and stable;
the preparation mode of U type pole is simple, and is lower to the manufacturing cost of crowded gluey rifle, and the lumber recovery is higher through setting up U type push rod, convenient operation push rod assembly.
Drawings
Fig. 1 is a schematic flow chart illustrating a method for manufacturing a U-shaped push rod according to a preferred embodiment of the present invention.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
Referring to fig. 1, in a preferred embodiment, a method for preparing a U-shaped push rod for a glue gun is disclosed, which is characterized by comprising the following steps:
s100: obtaining a seamless rod, and performing at least one centerless grinding on the seamless rod until the diameter of the seamless rod falls into a preset range;
centerless grinding is typically performed on a centerless grinder to grind the outer circle of the workpiece. During grinding, the workpiece is not centered and supported by a tip, but is placed between the grinding wheel and the guide wheel, supported by the supporting plate below the grinding wheel and driven to rotate by the guide wheel. The mode of centerless grinding is adopted, continuous processing can be realized, tool retracting is not needed, the copying time for clamping workpieces is short, and the production rate is high; the supporting rigidity of the bracket and the guide wheel positioning mechanism is better than that of the center and the center frame mechanism of a common cylindrical grinding machine, the cutting amount can be larger, the processing of slender shaft workpieces is facilitated, the high-speed grinding and the powerful grinding are easy to realize, the workpiece of the centerless cylindrical grinding machine is positioned on the positioning mechanism by the outer circle, the grinding amount is the allowance on the diameter of the workpiece, and therefore the abrasion of the grinding wheel, the compensation of the feeding mechanism and the repeated positioning precision error of the cutting mechanism influence the diameter size precision of the part.
S200: turning M5 threads on two ends of the seamless rod;
s300: sand blasting the outer surface of the seamless rod by using steel balls;
the steel ball and steel shot are used for blasting the surface of the seamless rod, so that the effects of less scratch, shallow scratch and small scratch can be realized, and the steel ball and the steel sand can be generally considered to be mixed for use when the steel sand for removing the dirt on the surface is thick.
S400: quenching the seamless rod at a preset temperature and for a preset time to enable the HRC of the seamless rod to be 58-61;
quenching is a heat treatment process for metals and glass. The quenching of the seamless rod is a heat treatment process in which the seamless rod is heated to a temperature above the critical temperature Ac3 (hypoeutectoid steel) or Ac1 (hypereutectoid steel), is kept warm for a certain period of time to make all or part of the austenite 1, and is then rapidly cooled to a temperature below Ms (or isothermal around Ms) at a cooling rate greater than the critical cooling rate to perform martensite (or bainite) transformation.
HRC is rockwell hardness, an academic concept proposed in 1921 by rockwell (s.p. rockwell), and is a hardness value of a metal material measured using a rockwell hardness meter. In this embodiment, the HRC of the seamless rod is 58-61.
S500: and (3) performing straightness correction on the seamless rod to ensure that the collimation of the seamless rod is between 0.05 and 0.1.
S600: bending the middle point of the seamless rod to form a first straight pipe and a second straight pipe which are positioned on two sides of the middle point, wherein the parallelism of the first straight pipe and the second straight pipe is within 0.5, and the end tolerance of the first straight pipe and the second straight pipe is within 1;
the parallelism refers to the degree of parallelism of two planes or two straight lines, and refers to the maximum allowable error value of parallelism of one plane (side) relative to the other plane (side).
S700: scrap iron in the internal thread holes at the end parts of the first straight pipe and the second straight pipe is removed;
s800: and (5) oiling and packaging the seamless rod, and finally finishing the preparation of the U-shaped push rod of the glue extruding gun. Meanwhile, the seamless rod is bent in the preparation process, so that the U-shaped push rod is finally formed, and the handle placed on the U-shaped push rod does not need to be prepared for the glue extruding gun.
Preferably or alternatively, a seamless rod is obtained and centerless ground at least once until the diameter of the seamless rod falls within a predetermined range in step S100, the seamless rod being a 45# seamless rod having a diameter of 8mm and a length of 640 mm.
Preferably or alternatively, the preset range is 7.75 — 0.03 mm.
Preferably or alternatively, in the step S200 of turning M5 threads on both ends of the seamless rod, the MM5 threads have a depth of 12 MM.
Preferably or alternatively, in step S400, the seamless rod is quenched at a preset temperature and for a preset time period, so that the HRC of the seamless rod is 58-61, the quenching temperature is between 850 ℃ and 900 ℃, and the aging temperature is 180 ℃ for one hour.
Preferably or optionally, bending the seamless rod at the middle point to form a first straight pipe and a second straight pipe which are positioned at two sides of the middle point, wherein the parallelism of the first straight pipe and the second straight pipe is within 0.5, the end tolerance of the first straight pipe and the second straight pipe is within 1, and the step of removing the scrap iron in the threaded holes at the ends of the first straight pipe and the second straight pipe further comprises the following steps of:
s900: and checking the parallelism of the first straight pipe and the second straight pipe by using the checking fixture, and machining by using a machine tool for twice to ensure the parallelism of the first straight pipe and the second straight pipe. The parallelism is preferably within 0.2 and the end tolerances of the first and second straight tubes are within 0.5.
The invention also discloses a manufacturing device for preparing the U-shaped push rod for the glue gun, which comprises the following components:
the grinding device receives the seamless rod and performs centerless grinding on the seamless rod at least once until the diameter of the seamless rod falls into a preset range;
the turning device is used for turning M5 threads on two ends of the seamless rod;
a sand blaster for blasting sand to the outer surface of the seamless rod by using steel balls;
the quenching device is used for quenching the seamless rod at a preset temperature and for a preset time length to ensure that the HRC of the seamless rod is 58-61;
the corrector corrects the straightness of the seamless rod, so that the collimation of the seamless rod is between 0.05 and 0.1;
the pipe bender bends at the middle point of the seamless rod to form a first straight pipe and a second straight pipe which are positioned at two sides of the middle point, the parallelism of the first straight pipe and the second straight pipe is within 0.5, and the end tolerance of the first straight pipe and the second straight pipe is within 1;
the scrap remover is used for removing scrap iron in the internal thread holes at the end parts of the first straight pipe and the second straight pipe;
and the packer is used for oiling and packaging the seamless rod.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (7)
1. A preparation method of a U-shaped push rod for a glue gun is characterized by comprising the following steps:
obtaining a seamless rod, and performing at least one-time centerless grinding on the seamless rod until the diameter of the seamless rod falls into a preset range;
turning M5 threads on two ends of the seamless rod;
sand blasting the outer surface of the seamless rod by using steel balls;
quenching the seamless rod at a preset temperature and for a preset time to enable the HRC of the seamless rod to be 58-61;
performing straightness correction on the seamless rod to enable the collimation degree of the seamless rod to be between 0.05 and 0.1;
bending the middle point of the seamless rod to form a first straight pipe and a second straight pipe which are positioned on two sides of the middle point, wherein the parallelism of the first straight pipe and the second straight pipe is within 0.5, and the end tolerance of the first straight pipe and the second straight pipe is within 1;
scrap iron in the internal thread holes at the end parts of the first straight pipe and the second straight pipe is removed;
and oiling and packaging the seamless rod.
2. The method according to claim 1, wherein the reaction mixture,
and obtaining a seamless rod, and performing centerless grinding on the seamless rod at least once until the diameter of the seamless rod falls into a preset range, wherein the seamless rod is a 45# seamless rod, the diameter of the seamless rod is 8mm, and the length of the seamless rod is 640 mm.
3. The method according to claim 2,
the preset range is 7.75-0.03 mm.
4. The method according to claim 1, wherein the reaction mixture,
in the step of turning M5 threads on both ends of the seamless rod, the MM5 threads were 12MM deep.
5. The method according to claim 1, wherein the reaction mixture,
quenching the seamless rod at a preset temperature and for a preset time to enable the HRC of the seamless rod to be 58-61, wherein the quenching temperature is 850-900 ℃, and the aging temperature is 180 ℃ for one hour.
6. The method of manufacturing according to claim 1, wherein bending is performed at a midpoint of the seamless rod to form a first straight tube and a second straight tube located on both sides of the midpoint, and wherein a parallelism of the first straight tube and the second straight tube is within 0.5, and wherein a tolerance of end portions of the first straight tube and the second straight tube is within 1, and wherein the step of removing iron pieces in threaded holes in the end portions of the first straight tube and the second straight tube further comprises:
and checking the parallelism of the first straight pipe and the second straight pipe by using a checking fixture, and machining by using a machine tool for twice to ensure the parallelism of the first straight pipe and the second straight pipe.
7. A manufacturing apparatus for preparing a U-shaped pusher for a glue gun, the manufacturing apparatus comprising:
the grinding device receives a seamless rod and performs centerless grinding on the seamless rod at least once until the diameter of the seamless rod falls into a preset range;
a lathe which turns M5 thread on two ends of the seamless rod;
a sand blower for blasting sand to the outer surface of the seamless rod by using steel balls;
the quenching device is used for quenching the seamless rod at a preset temperature and for a preset time length, so that the HRC of the seamless rod is 58-61;
the corrector corrects the straightness of the seamless rod, so that the collimation of the seamless rod is between 0.05 and 0.1;
the pipe bender bends at the middle point of the seamless rod to form a first straight pipe and a second straight pipe which are positioned at two sides of the middle point, the parallelism of the first straight pipe and the second straight pipe is within 0.5, and the end tolerance of the first straight pipe and the second straight pipe is within 1;
the scrap remover is used for removing scrap iron in the internal thread holes at the end parts of the first straight pipe and the second straight pipe;
and the packer is used for oiling and packaging the seamless rod.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011484622.8A CN112621129A (en) | 2020-12-16 | 2020-12-16 | Preparation method and manufacturing equipment of U-shaped push rod for glue extruding gun |
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| CN202011484622.8A CN112621129A (en) | 2020-12-16 | 2020-12-16 | Preparation method and manufacturing equipment of U-shaped push rod for glue extruding gun |
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| CN202011484622.8A Pending CN112621129A (en) | 2020-12-16 | 2020-12-16 | Preparation method and manufacturing equipment of U-shaped push rod for glue extruding gun |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030111143A1 (en) * | 2001-10-23 | 2003-06-19 | Consolidated Metal Products, Inc. | Flattened U-bolt and method |
| JP2004254462A (en) * | 2003-02-21 | 2004-09-09 | Tokyo Electric Power Co Inc:The | Conduit fixing method and u-bolt |
| CN1906422A (en) * | 2003-11-21 | 2007-01-31 | 麦克林-福格公司 | U-bolt assembly |
| CN102145443A (en) * | 2010-02-05 | 2011-08-10 | 上海新申金属制品有限公司 | Method for processing U-shaped bolts |
| CN103084523A (en) * | 2012-12-04 | 2013-05-08 | 安徽六方重联机械股份有限公司 | Method for machining high-strength U-shaped bolt |
| CN105290719A (en) * | 2014-07-20 | 2016-02-03 | 安庆市亿豪工贸发展有限公司 | Method for machining hydraulic piston rod for forklift |
| CN106271448A (en) * | 2016-08-31 | 2017-01-04 | 中国航天科技集团公司烽火机械厂 | A kind of long mill bar processing method |
| CN106494175A (en) * | 2015-09-04 | 2017-03-15 | 穆尔和本德公司 | Stabilizer bar and the process of manufacture stabilizer bar |
| CN111660072A (en) * | 2020-01-04 | 2020-09-15 | 铁岭中油机械设备制造有限公司 | Manufacturing method of anti-corrosion wear-resistant oil pumping polished rod |
-
2020
- 2020-12-16 CN CN202011484622.8A patent/CN112621129A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030111143A1 (en) * | 2001-10-23 | 2003-06-19 | Consolidated Metal Products, Inc. | Flattened U-bolt and method |
| JP2004254462A (en) * | 2003-02-21 | 2004-09-09 | Tokyo Electric Power Co Inc:The | Conduit fixing method and u-bolt |
| CN1906422A (en) * | 2003-11-21 | 2007-01-31 | 麦克林-福格公司 | U-bolt assembly |
| CN102145443A (en) * | 2010-02-05 | 2011-08-10 | 上海新申金属制品有限公司 | Method for processing U-shaped bolts |
| CN103084523A (en) * | 2012-12-04 | 2013-05-08 | 安徽六方重联机械股份有限公司 | Method for machining high-strength U-shaped bolt |
| CN105290719A (en) * | 2014-07-20 | 2016-02-03 | 安庆市亿豪工贸发展有限公司 | Method for machining hydraulic piston rod for forklift |
| CN106494175A (en) * | 2015-09-04 | 2017-03-15 | 穆尔和本德公司 | Stabilizer bar and the process of manufacture stabilizer bar |
| CN106271448A (en) * | 2016-08-31 | 2017-01-04 | 中国航天科技集团公司烽火机械厂 | A kind of long mill bar processing method |
| CN111660072A (en) * | 2020-01-04 | 2020-09-15 | 铁岭中油机械设备制造有限公司 | Manufacturing method of anti-corrosion wear-resistant oil pumping polished rod |
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