CN108859501B

CN108859501B - Production method of liquid leakage prevention pen point

Info

Publication number: CN108859501B
Application number: CN201810581177.3A
Authority: CN
Inventors: 柳岳瑞
Original assignee: Cixi Lyumaofeng Smoking Set Co ltd
Current assignee: Cixi Lyumaofeng Smoking Set Co ltd
Priority date: 2018-06-07
Filing date: 2018-06-07
Publication date: 2020-07-21
Anticipated expiration: 2038-06-07
Also published as: CN108859501A

Abstract

The production method of the liquid leakage prevention pen point is characterized by comprising the following steps: A. processing brass raw materials into a pen point main body; B. b, annealing the pen point main body in the step A; C. electroplating the wear-resistant layer; D. b, placing the ball into the ball cavity of the pen point in the step B; E. the nib is pointed, so that the edge wrapping part is tightly attached to the outer wall of the ball, and the ball extrudes the ball cavity to generate a gap; f, quenching the pen point; g, assembling the elastic element into the pen point, wherein the lower part of the elastic element is connected with a thimble, and the thimble is abutted against the ball. According to the production method of the pen point, brass is used as a raw material, so that the pen point is easy to process and low in cost; meanwhile, the ball can well seal the liquid outlet gap through the optimization of the process and the steps, and the liquid leakage prevention effect is good; the whole assembly is convenient, and the production cost is low.

Description

Production method of liquid leakage prevention pen point

Technical Field

The invention belongs to the field of pen point production and preparation methods, and particularly relates to a production method of a liquid leakage prevention pen point.

Background

Stationery products are widely available, and among them, writing pens are a kind of stationery products which are widely used, including ball-point pens, fountain pens, marking pens, fountain pens, highlighters, and the like. In the structure of ball-point pen and fountain pen, the ink is filled in the core tube, and the front end of the core tube is provided with the pen point. When writing, the ball on the pen head rolls to drive the ink to flow out, and handwriting is left on the paper.

In the prior art, the nib production and manufacturing precision requirement is very high, and qualified nib needs to guarantee that printing ink flows smoothly when writing, and printing ink can not flow when not writing, still needs to guarantee that long-time writing in-process ball can not warp and drop simultaneously. At present, most pen point ball-points in China need to be imported, and the completely domestic pen points also have the problems of ball falling, oil leakage, unsmooth writing and the like.

In addition, in traditional nib production process, only once the operation of pinching, the portion of borduring in the ball chamber after pinching does not laminate with the ball, but leaves certain play liquid gap and is used for the outflow of printing ink, but this also leads to the ball and the portion of borduring laminating that can not be fine, and printing ink can flow. Therefore, in view of the above problems, the applicant has conducted further research on the pen tip, and particularly provides a method for producing a liquid-proof pen tip.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the production method of the liquid leakage prevention pen point, and the produced pen point has a good liquid leakage prevention effect by matching a specific material process with two sharpening operations.

In order to solve the above technical problems, the present invention is solved by the following technical solutions.

The production method of the liquid leakage prevention pen point is characterized by comprising the following steps: A. processing brass raw materials into a pen point main body; B. b, annealing the pen point main body in the step A; C. electroplating the wear-resistant layer; D. b, placing the ball into the ball cavity of the pen point in the step B; E. the nib is pointed, so that the edge wrapping part is tightly attached to the outer wall of the ball, and the ball extrudes the ball cavity to generate a gap; f, quenching the pen point; g, assembling the elastic element into the pen point, wherein the lower part of the elastic element is connected with a thimble, and the thimble is abutted against the ball. .

The pen point among the prior art all is stainless steel material, and the texture is hard, and processing cost is high, only once sharpens at the in-process of pinching simultaneously, and will not wrap limit portion and the laminating of ball when pinching, but leaves certain play liquid gap and leads to the laminating that ball and portion of borduring can not be fine, and printing ink can flow. According to the invention, the brass material is selected as the raw material, the texture is soft after the brass material is returned, the pointing operation is easy to carry out, the operation of extruding the ball cavity is generated during pointing, the edge wrapping part and the ball can be in sealing fit, a space for the ball to roll and a liquid outlet gap are also generated, and the ball can be well sealed under the action of the elastic part and the ejector pin. Finally, the brass material can be hardened after quenching treatment, and the use requirement is met.

Preferably, in the step B, the temperature of the annealing treatment is 250-350 ℃, and the time of the annealing treatment is 50-70 minutes.

Preferably, in step E, the width of the gap generated after the sharpening is 10 μm to 40 μm.

Preferably, in the step C, the thickness of the wear-resistant layer after electroplating is 0.5-0.8 μm.

Preferably, in the step F, the quenching treatment temperature is 150-250 ℃, and the quenching treatment time is 2.5-3.5 hours.

Preferably, the brass raw material is H58-3 brass.

Preferably, the elastic member is a spring, and the upper end of the spring is a spring fixing end which is fixed in the pen point tube to prevent the spring from falling out.

Preferably, the elastic piece is a bendable metal sheet, the upper end of the metal sheet is a metal sheet fixing end, and the metal sheet fixing end is fixed in the pen point tube.

Preferably, the sharpening operation in step E comprises at least two sharpenings: the first sharpening is carried out, the round beads are clamped in the round bead cavities, and the edge covering parts are in sealing fit with the round beads; and (5) sharpening for the second time to enable the ball to be stressed and extrude the ball cavity to generate a gap for the ball to roll. The pointing is carried out twice, and the functions of sealing and jointing and extruding gaps are respectively realized.

Preferably, the base used in the first sharpening is an arc-shaped base, and the base used in the second sharpening is a plane base, so that the two sharpening operations can be well matched.

Compared with the prior art, the invention has the following beneficial effects: the production method of the anti-leakage pen point is provided, brass is used as a raw material, the processing is easy, and the cost is low; meanwhile, the ball can well seal the liquid outlet gap through the optimization of the process and the steps, and the liquid leakage prevention effect is good; the whole assembly is convenient, and the production cost is low.

Drawings

FIG. 1 is a schematic view of the pen tip tube mated with a ball.

FIG. 2 is a schematic view of the region of the nib where the ball just snaps into the ball cavity.

FIG. 3 is a schematic diagram of a nib area in the prior art.

Fig. 4 is a schematic view of the first sharpening of the pen tip of the present invention.

FIG. 5 is a schematic view of the second sharpening of the pen tip according to the present invention.

FIG. 6 is a schematic view of the nib of the present invention after the nib is sharpened.

FIG. 7 is a schematic view of a pen tip with a spring as the elastic element.

Fig. 8 is a schematic view of a nib portion in which the elastic member is a spring.

FIG. 9 is a schematic view of a pen tip with a metal plate as the elastic member.

Fig. 10 is a schematic view of a nib part in which the elastic member is a metal plate.

Fig. 11 is a front view of a metal sheet in the present invention.

Fig. 12 is a side view of a metal sheet in the present invention.

Fig. 13 is a schematic view of the metal sheet in the straightened state according to the invention.

Fig. 14 is a schematic view of a cross section taken along the line a-a in fig. 10.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The production method of the liquid leakage prevention pen point comprises the following steps: a, processing a brass raw material (specifically H58-3 brass) into a pen point main body; B. b, annealing the pen point main body in the step A, wherein the annealing temperature is 250-350 ℃, the annealing temperature is preferably 290-310 ℃, the annealing time is more preferably 300 ℃, and the annealing time is 50-70 minutes, preferably 60 minutes; C. electroplating the wear-resistant layer, wherein the thickness of the electroplated wear-resistant layer is 0.5-0.8 μm, and the preferred wear-resistant layer is a nickel-phosphorus alloy coating or a titanium alloy coating; D. b, placing the ball into the ball cavity of the pen point in the step B; f advances the operation of pinching of nib, makes package portion and the sealed laminating of ball outer wall, and makes the ball extrusion ball chamber produce the space, and is concrete, should beat the operation of pinching including twice at least and pinching: the ball is clamped in the ball cavity by the base which is a cambered surface base, and the edge covering part is in sealing fit with the ball; second pointing, wherein the base is a plane base, so that the ball is stressed and extrudes the ball cavity to generate a rolling gap of the ball, and the width of the gap is 10-40 mu m; F. quenching the pen point, wherein the quenching temperature is 150-250 ℃, the quenching temperature is preferably 190-210 ℃, the quenching time is more preferably 200 ℃, and the quenching time is 2.5-3.5 hours, preferably 3 hours; g, assembling an elastic element into the pen point, wherein the lower part of the elastic element is connected with a thimble, and the thimble is abutted against the ball; the elastic piece is a spring, the upper end of the spring is a spring fixing end, and the spring fixing end is fixed in the pen point tube; the elastic piece can also be a bendable metal sheet, the upper end of the metal sheet is a metal sheet fixing end, and the metal sheet fixing end is fixed in the pen point tube.

The production method of the anti-leakage pen point adopts brass as a raw material, is easy to process and has low cost; meanwhile, the ball can well seal the liquid outlet gap through the optimization of the process and the steps, and the liquid leakage prevention effect is good; the whole assembly is convenient, and the production cost is low.

The following is a pen point structure prepared according to the method of the present invention, referring to fig. 1 to 14, a liquid leakage prevention pen point comprises a pen point tube 1, one end of the pen point tube 1 is a pen point 2, the front end of the pen point 2 is provided with a ball cavity 21, a ball 5 capable of rolling is arranged in the ball cavity 21, the ball cavity 21 is communicated with an inner cavity of the pen point 2, an elastic member is arranged in the inner cavity of the pen point tube 1, the lower part of the elastic member is connected with an ejector pin 32, the end part of the ejector pin 32 is abutted against the ball 5, the elastic member is used for pressing the ejector pin 32 towards the ball 5, and the ball 5 is sealed and attached to an edge-covered part 211 of the ball cavity 21 under the action of the ejector pin 32. In addition, in the present application, the ball cavity 21 is communicated with the inner cavity of the pen tip 2 through the flow passage 22, and the thimble 32 passes through the flow passage 22 and abuts against the ball 5.

According to the invention, the pen point tube 1 and the pen point 2 are made of brass materials, and the surface of the brass materials is provided with the nickel-phosphorus alloy coating or the titanium alloy coating after post-processing, the brass materials are convenient to process and cut off, the production cost is low, the nickel-phosphorus alloy coating or the titanium alloy coating enables the formed pen point to be wear-resistant, the service life is long, and the thickness of the nickel-phosphorus alloy coating or the titanium alloy coating is 0.5-0.8 mu m. The ball 5 is made of tungsten carbide, and has stable property and high hardness.

The elastic member in the present application has two embodiments, wherein fig. 7 and 8 are a first embodiment, in this embodiment, the elastic member is a spring 3, the lower end of the spring 3 is connected with a thimble 32, the upper end of the spring 3 is a spring fixing end 31, and the spring fixing end 31 is fixed in the pen point tube 1; the diameter of the spring ring of stiff end 31 is greater than the diameter of the last spring ring of spring main part, and the spring ring diameter of stiff end 31 is the same with the internal diameter of pen point pipe 1, and the spring ring density on stiff end 31 is greater than the spring ring density on the spring main part.

Fig. 9 to 13 show another embodiment of the present application, in which the elastic member is a bendable metal sheet 6, and the lower end of the metal sheet 6 is connected with a thimble 32. Specifically, the upper end of the metal sheet 6 is a metal sheet fixing end 61, the metal sheet fixing end 61 is fixed in the nib tube 1, meanwhile, the width of the metal sheet fixing end 61 is greater than that of the metal sheet 6, and the width of the metal sheet fixing end 61 is the same as the inner diameter of the nib tube 1.

According to the pen point, the ejector pin 32 and the elastic piece are arranged, so that the ejector pin can be used for ejecting the ball 5 in a non-writing state, and the ball 5 just seals the liquid outlet gap, so that the liquid leakage phenomenon is prevented; when writing, the ball 5 is slightly retracted after being pressed, and at the moment, the ink flows out through the liquid outlet gap to finish the writing operation.

In addition, as shown in fig. 14, in the nib structure of the present invention, in order to ensure smooth flow of ink and sufficient ink supply, a channel groove 221 may be formed on an inner wall of the channel 22 to increase the flow rate of the channel 22.

In traditional nib production process, only once the operation of pinching, the portion 211 of borduring of pinching back ball chamber 21 does not laminate with ball 5, but leaves the outflow that certain play liquid gap is used for printing ink, the card of ball 5 has also been avoided simultaneously dies, make ball 5 can smoothly roll, but this also leads to ball 5 and the laminating that portion 211 of borduring can not be fine, printing ink can flow, even support ball 5 through the elastic component, also have printing ink to flow in the gap after ball 5 offsets with the portion 211 of borduring.

The pen point production process has two sharpening operations, the base in the first sharpening operation is the cambered surface base 91, the edge-covering part 211 is in sealing fit with the ball 5 after sharpening, at the moment, the ball 5 is clamped in the ball cavity 21 and cannot rotate freely, then sharpening is carried out for the second time, at the moment, the base is the plane base 92, only the ball 5 is stressed and extrudes the ball cavity 21 at the moment, the ball cavity 21 is extruded and deformed to generate a rolling space of the ball 5, at the moment, the ball 5 can roll freely, a liquid outlet gap is generated, more importantly, the sealing fit structure of the edge-covering part 211 and the ball 5 in the first sharpening operation is ensured, the ball 5 can be well sealed when being pressed to the edge-covering part 211 by an elastic piece, and ink is prevented from flowing out.

In addition, the traditional pen point is made of stainless steel materials, and although the wear resistance is good, the hardness is high, and the processing difficulty is large. In the invention, the pen point is made of brass material (preferably H58-3 brass), the brass material has lower processing difficulty than stainless steel, after molding, the pen point made of brass is annealed for 1 hour at the temperature of 300 ℃, the annealed material becomes soft, then nickel-phosphorus alloy or titanium alloy electroplating is carried out, the plating layer is 0.5-0.8 μm, and the surface wear resistance of the pen point is good. And after annealing, sharpening operation is facilitated, and particularly, secondary sharpening extrusion operation is facilitated. After the sharpening is finished, the width of a liquid outlet gap on the pen point is 10-40 mu m, the ink outlet gap can adapt to the outflow of water-based and oil-based ink, and the cost is only one third of that of a stainless steel material.

And finally, after the pen point is integrally formed, carrying out heat treatment: the pen point is heat treated at 200 ℃ for 3 hours, the hardness of the pen point is improved, particularly the hardness of the outer edge of the liquid outlet is improved, the pen point cannot deform, the hardness of the treated pen point reaches 58-60HRC, the hardness is high,

the liquid leakage preventing pen point for the ball pen is characterized in that the ejector pin is arranged on the elastic piece, and the ejector pin is connected with the elastic piece; the structure is simple, the assembly is convenient, the production cost is low, the effect is one third of the cost of the traditional stainless steel pen point, and the processing is easy.

The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.

Claims

1. The production method of the liquid leakage prevention pen point is characterized by comprising the following steps: A. processing brass raw materials into a pen point main body, wherein the pen point main body comprises a pen point pipe, one end of the pen point pipe is a pen point, the front end of the pen point is provided with a ball-point cavity, and a wrapping part is arranged on the ball-point cavity; B. b, annealing the pen point main body in the step A; C. electroplating the wear-resistant layer on the pen point main body; D. b, placing the ball into the ball cavity of the pen head main body in the step B; E. carrying out pointing operation of a pen point to enable the edge wrapping part to be in sealing fit with the outer wall of the ball, and enabling the ball to extrude the ball cavity to generate a gap; f, quenching the pen point main body; g, assembling an elastic element into the pen point main body, wherein the lower part of the elastic element is connected with a thimble, and the thimble is abutted against the ball;

the sharpening operation in step E comprises at least two sharpenings: the first sharpening is carried out, the round beads are clamped in the round bead cavities, and the edge covering parts are in sealing fit with the round beads; the second sharpening is carried out, so that the ball is stressed and extrudes the ball cavity to generate a gap for rolling the ball; and the base used in the first sharpening is an arc-surface base, and the base used in the second sharpening is a plane base.

2. The method for producing the liquid leakage preventing pen point of claim 1, wherein in the step B, the temperature of the annealing treatment is 250 ℃ to 350 ℃, and the time of the annealing treatment is 50 minutes to 70 minutes.

3. The method for manufacturing the liquid leakage prevention pen point of claim 1, wherein in the step E, the width of the gap generated after the second sharpening is 10 μm to 40 μm.

4. The method for manufacturing the liquid leakage prevention pen point of claim 1, wherein in the step C, the thickness of the wear-resistant layer after electroplating is 0.5 μm to 0.8 μm.

5. The method for producing the liquid leakage preventing pen point of claim 1, wherein in the step F, the temperature of the quenching treatment is 150 ℃ to 250 ℃, and the time of the quenching treatment is 2.5 hours to 3.5 hours.

6. The method for manufacturing a liquid leakage prevention pen point as claimed in claim 1, wherein the brass is H58-3 brass.

7. The method for manufacturing a liquid leakage prevention pen point of claim 1, wherein the elastic member is a spring, the upper end of the spring is a fixed end of the spring, and the fixed end of the spring is fixed in the pen point tube.

8. The method for manufacturing a liquid leakage prevention nib of claim 1 wherein the resilient member is a flexible metal plate, the upper end of the metal plate is a metal plate fixing end, and the metal plate fixing end is fixed in the nib tube.