CN109160715B

CN109160715B - Small mouth glass bottle pressing-blowing process mould

Info

Publication number: CN109160715B
Application number: CN201811171239.XA
Authority: CN
Inventors: 周茂华
Original assignee: Anhui Longrui Glass Co ltd; Anhui Gujing Distillery Co Ltd
Current assignee: Anhui Longrui Glass Co ltd; Anhui Gujing Distillery Co Ltd
Priority date: 2018-10-09
Filing date: 2018-10-09
Publication date: 2023-09-26
Anticipated expiration: 2038-10-09
Also published as: CN109160715A

Abstract

The invention provides a small-mouth glass bottle pressure-blowing process mould, which redesigns the structure of the connection part of a punch joint and a cooler in the existing pressure-blowing mechanism, so that part of small-mouth glass bottles which can be produced only by the blowing-blowing process can be produced by the pressure-blowing process, wherein the inner cavity of the cooler is a plurality of sections of straight holes which are sequentially communicated from top to bottom, the bottommost section of straight holes penetrate downwards and are communicated with counter bores of a cooler base, and four axially-communicated cooling air ports are symmetrically distributed on the center of the cooler base, which is close to the outer wall of the cooler; a boss is arranged in the center of the top end of the punch head connector and is positioned in a radial area between a pair of cooling air ports, and the end face of the boss abuts against the bottom face of a counter bore of the cooler base; the center of the punch head joint is provided with an air inlet hole which is axially communicated with the straight hole at the bottommost section of the inner cavity of the cooler, and two sides of the punch head joint are provided with air outlet holes which are communicated with the counter bore of the base of the cooler. The invention can ensure that the cooling air is smoothly fed in and discharged out, so that the punch head can be cooled in time during production.

Description

Small mouth glass bottle pressing-blowing process mould

Technical Field

The invention relates to the field of production and manufacture of daily glass bottles, in particular to a small-mouth glass bottle pressing-blowing process die.

Background

The molding process of the glass bottle is divided into two types of blowing-blowing method and pressure-blowing method, the blowing-blowing method process is commonly applied to the production of small-mouth glass bottles, and has the advantages of being not limited by bottle type height, and the defects of poor uniformity of the bottle body, thinner wall thickness at the middle lower part than other parts, commonly called two waisting phenomena, and having certain influence on the product quality; the pressure-blowing method is suitable for producing large-mouth bottles, and has the advantages of uniform wall thickness, high production efficiency and limitation of the inner diameter of the bottle mouth and the height of the bottle body. At present, products with the bottle mouth inner diameter larger than 30mm and the bottle body not higher than 240mm can be produced by a pressure-blowing method in principle. The products with the bottle mouth inner diameter smaller than 30mm and the height larger than 240mm are limited by the material property of glass material, the punch stroke, the punch material, the punch inner cavity, the cooler processing technology and the like, and the pressure-blowing method has not been well applied.

By the beginning of this century, bottle making equipment has been improved and perfected for nearly half a century, and the equipment precision and automation degree are very high; the formula of the glass raw material is optimized (the demoulding taper of the punch can be not less than about 1.5 degrees); the novel material and the numerical control machine tool are popularized and applied in the processing of glass molds. Because the conditions are met, and environmental protection is improved in recent years, the cost of raw materials, fuel and the like is continuously increased, and in order to save resources, the thin-wall lightweight production of products has become trend, and the precondition of the thin-wall lightweight production is that a pressure-blowing process is adopted, and when the pressure-blowing process is applied to a small-caliber glass bottle, the pressure-blowing process is called small-mouth pressure-blowing.

As is well known, the bottle mouth diameter of most daily glass bottles is below 30mm except for can bottles, milk bottles and partial cosmetic bottles, but the requirements for materials of small-mouth bottle punches and coolers are high, the inner cavity processing of the small-mouth bottle punches and the cooling materials is complex, the cost is high, and the small-mouth pressure-blowing process is not popularized at present.

Disclosure of Invention

The present invention aims to solve the above technical problems at least to some extent. Therefore, the invention provides the small-mouth glass bottle pressing-blowing process die, and the structure of the connecting part of the punch head connector and the cooler is redesigned, so that the smooth in-and-out of cooling gas can be ensured, and the punch head can be cooled in time during production.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the small-mouth glass bottle pressing-blowing process die is characterized in that a cooler is sleeved in an inner cavity of a punch, a space is reserved between the outer wall of the cooler and the inner wall of the punch, and a punch joint is plugged into a counter bore of a punch base through the top end part to form an integral structure of the die;

the side wall of the cooler is axially provided with a plurality of air outlets at intervals, the inner cavity is a plurality of sections of straight holes which are sequentially communicated from top to bottom, the bottommost section of straight holes penetrate downwards and are communicated with counter bores of a base of the cooler, and four axially-communicated cooling air ports are symmetrically distributed on the base of the cooler and are close to the outer wall of the cooler in a central symmetry manner;

a boss is arranged at the center of the top end of the punch head connector, the end face of the boss abuts against the bottom surface of the counter bore of the cooler base, and the boss is positioned in a radial area between a pair of cooling air ports; the center of the punch head joint is provided with an air inlet hole which is axially communicated with the straight hole at the bottommost section of the inner cavity of the cooler, and two sides of the punch head joint are provided with air exhaust holes which are communicated with the counter bore of the base of the cooler;

the die is characterized in that an air inlet hole and an inner cavity of the cooler form an air inlet channel from bottom to top, a gap between the outer wall of the cooler and the inner wall of the punch, a cooling air port, a counter bore of a base of the cooler and an exhaust hole form an exhaust channel from top to bottom, and a plurality of air outlets on the side wall of the cooler are communicated with the air inlet channel and the exhaust channel.

The invention also provides a small-mouth glass bottle pressing-blowing method process die, the cooler is sleeved in the inner cavity of the punch, a space is reserved between the outer wall and the inner wall of the punch, and the punch joint is plugged in the counter bore of the punch base by the top end part to form the integral structure of the die;

the bottom end part of the cooler penetrates through the counter bore of the cooler base to extend downwards, the bottom end surface is tightly attached to the top end surface of the punch head joint, a plurality of air outlets are axially arranged at intervals on the side wall, the inner cavity is a plurality of sections of straight holes which are sequentially communicated from top to bottom, the cooler base is tightly attached to the outer wall of the cooler, and four axially-through cooling air ports are symmetrically distributed in a center;

the center of the punch head joint is provided with an air inlet hole which is axially communicated with the straight hole at the bottommost section of the inner cavity of the cooler, and two sides of the punch head joint are provided with air exhaust holes which are communicated with the counter bore of the base of the cooler;

And a small-mouth glass bottle pressing-blowing method process die, wherein a cooler is sleeved in an inner cavity of a punch, a space is reserved between the outer wall and the inner wall of the punch, a punch joint is plugged in a counter bore of a punch base through a top end part, and the whole structure of the die is formed, and the small-mouth glass bottle pressing-blowing method process die is characterized in that:

the bottom end part of the cooler penetrates through the counter bore of the cooler base to extend downwards and is tightly matched with the counter bore in the center of the top end of the punch head, a plurality of air outlets are axially arranged at intervals on the side wall, the inner cavity is a plurality of sections of straight holes which are sequentially communicated from top to bottom, the cooler base is tightly attached to the outer wall of the cooler, and four axially-through cooling air ports are symmetrically distributed in the center;

Compared with the prior art, the invention has the beneficial effects that:

the invention changes the structures of the punch head joint, the cooler and the punch head in the pressure-blowing mechanism of the prior determinant bottle making machine, so that partial small-mouth glass bottles which can be produced only by the blowing-blowing process can be produced by the pressure-blowing process, and the purposes of uniform bottle wall, stable quality, light weight, resource saving, cost reduction and high efficiency are achieved, and the invention is characterized in that:

1. the wall thickness of the glass bottle is uniform, the phenomenon of waist cutting is avoided, the product quality is improved, and a foundation is laid for thin-wall lightweight production;

2. the dripping temperature required by the pressure-blowing process is lower than that required by the blowing-blowing process, so that the cooling time is shorter, the production machine speed is higher, and the production efficiency is improved;

3. the small-mouth pressure-blowing process is adopted for production, is a precondition for realizing the light weight of the product, and can save a large amount of resources.

Drawings

FIG. 1a is a schematic diagram of a standard number one punch in a conventional pressure-blowing mechanism;

FIG. 1b is a schematic diagram of a standard No. I cooler in a conventional pressure-blowing mechanism;

FIG. 1c is a schematic view of a standard number one punch head of the present pressure-blowing mechanism;

FIG. 1 is an assembled schematic view of the structure shown in FIGS. 1a, 1b, and 1 c;

FIG. 2a is a schematic diagram of a punch according to an embodiment;

FIG. 2b is a schematic diagram of a cooler according to an embodiment;

FIG. 2c is a schematic view of a punch head of an embodiment;

FIG. 2 is a schematic structural view of a process die for a press-and-blow method for manufacturing a small-mouth glass bottle according to an embodiment;

FIG. 3a is a schematic diagram of a second embodiment of a cooler;

FIG. 3b is a schematic view of a two-punch joint of an embodiment;

FIG. 3 is a schematic structural view of a process mold for the pressure-blowing method of a two-port glass bottle according to an embodiment;

FIG. 4a is a schematic diagram of a third embodiment of a chiller;

FIG. 4b is a schematic view of the structure of the three-punch joint of the embodiment;

fig. 4 is a schematic structural diagram of a process mold for a three-port glass bottle pressure-blowing method according to an embodiment.

In the figure, 1 punch; 11 punch bases; 2a cooler; a cooler base 21; 22 bottom section straight hole; 23 cooling air ports; a 24 air outlet; 3, a punch joint; 31 bosses; 32 air inlet holes; 33 vent holes.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Embodiment one:

fig. 1a shows a standard number one punch (according to the design principle of a punch of a die of a pressure-blowing method, if the height of a bottle mouth is less than 12mm, the dimension a=15 mm in the figure, when the height of the bottle mouth is between 12mm and 22mm, the dimension a=5 mm in the figure, and the dimension b is 12mm, so that the specification mainly considers the matching with a die), and the dimension c is the inner diameter of the bottle mouth; FIG. 1b shows a standard first cooler, in principle the dimension d shown in the figure is about 10mm smaller than the dimension c in FIG. 1; fig. 1c shows a standard first punch head, e shows an air inlet hole, and f shows an air outlet hole. Fig. 1 is an assembly drawing, arrows in the drawing show the flow direction of cooling air, and as can be seen from fig. 4, as the wall thickness of a punch is 2.5mm, the radial gap between the outer wall of a cooler and the inner wall of the punch is 2.5mm, the dimension A of a part shown in the enlarged part of the cooler base and the punch joint in fig. 4 is at least 2.5mm, the sum of the dimension A of the cooler base and the punch joint is 7.5mm, and the dimension H of the punch joint is 7.5mm, which is 15mm in total, that is, the minimum bottleneck inner diameter which can be made by the standard part is 30mm. To use a small nip-blow, the relevant parts must be redesigned.

Referring to fig. 2a, 2b, 2c and 2, the die for the small-mouth glass bottle pressing-blowing method in this embodiment is that a step surface is provided at one end of the punch joint 3, the step surface is tightly matched with a counter bore of the punch base 11 and is abutted against a bottom end surface of the punch base 11, the cooler 2 is axially sleeved in an inner cavity of the punch 1, a space is reserved between an outer wall and an inner wall of the punch 1, an outer wall of the cooler base 21 is tightly matched with the counter bore of the punch base 11, a top end surface and the bottom end surface are respectively tightly attached to a bottom surface of the counter bore of the punch base 11 and an outer edge of a top end surface of the punch joint 3, so as to form an assembly structure of the punch 1, the cooler 2 and the punch joint 3, and the assembly form is basically consistent with the existing structure.

The die of the embodiment changes the structures of the punch head joint 3 and the cooler 2 in the pressure-blowing mechanism of the prior determinant bottle making machine, so that partial small-mouth glass bottles which can be produced only by the blowing-blowing process can be produced by the pressure-blowing process, the purposes of uniform bottle wall, light weight, resource conservation and cost reduction are achieved, and the specific structure is as follows:

the side wall of the cooler 2 is axially provided with a plurality of air outlets 24 at intervals, the inner cavity is a plurality of sections of straight holes which are sequentially communicated from top to bottom, the bottommost section of straight holes 22 penetrate downwards and are communicated with counter bores of the cooler base 21, and four axially through cooling air ports 23 are symmetrically distributed on the cooler base 21 and are close to the outer wall of the cooler 2 in a central symmetry manner;

a boss 31 is arranged at the center of the top end of the punch head 3, the end face of the boss 31 is abutted against the bottom face of the counter bore of the cooler base 21, and the boss 31 is positioned in a radial area between a pair of cooling air ports 23; the center of the punch head joint 3 is provided with an air inlet 32 which is axially communicated with the straight hole 22 at the bottommost section of the inner cavity of the cooler 2, and two sides of the punch head joint 3 are provided with four air outlets 33 which are symmetrically arranged in a center, are communicated with the counter bore of the cooler base 21 and are arranged in a one-to-one correspondence manner according to the positions of the four cooling air ports 23;

the mold is an air inlet channel formed by an air inlet 32 and an inner cavity of the cooler 2 from bottom to top, an air outlet channel formed by a gap between the outer wall of the cooler 2 and the inner wall of the punch head 1, a cooling air port 23, a counter bore of the cooler base 21 and an air outlet 33 from top to bottom, and a plurality of air outlets 24 on the side wall of the cooler 2 are communicated with the air inlet channel and the air outlet channel.

As is apparent from comparing fig. 1 and fig. 2, by changing the structure of the connecting part of the cooler and the punch head, the counter bore in the original cooler and positioned right above the base of the cooler is omitted, the radial dimensions of the cooler and the punch head are reduced, and the press-blowing process can be suitable for the production of small-mouth glass bottles. Taking the existing mold shown in fig. 1 as an example, the structural improvement of the novel mold of this embodiment on the basis thereof specifically includes:

1. fig. 2a shows the lower half of the punch, and the size a' =5mm in the figure, because the bottle mouth height of most small-mouth glass bottles is above 12 mm;

2. fig. 2b shows the lower half of the cooler (the connection to the punch head), where c '=6mm (standard size), in order to minimize the cooling hole centre-to-centre distance d' (omitting dimension a in fig. 4), no counter bore is left in fig. 1 with depth j=5mm; the cooler foundation counterbore depth e' =3mm is also shown as standard size.

3. Fig. 2c shows a punch head, which, on the basis of the standard number one punch head of fig. 1c, is turned off by 3mm from a boss of a previous 6mm height, and the boss height after modification is 3mm.

Embodiment two:

referring to fig. 3a, 3b and 3, the die for the press-and-blow method of the small-mouth glass bottle of the present embodiment is substantially the same as that of the first embodiment, and only differs from the first embodiment in the connection portion between the cooler and the punch head, and the structure thereof is as follows;

the bottom end part of the cooler 2 passes through a counter bore of the base of the cooler 2 to extend downwards, the bottom end surface is tightly attached to the top end surface of the punch joint 3, a plurality of air outlets are axially arranged at intervals on the side wall, the inner cavity is a plurality of sections of straight holes which are sequentially communicated from top to bottom, and four cooling air ports which are axially communicated are symmetrically distributed in a center and are tightly attached to the outer wall of the cooler 2 on the base of the cooler 2;

the center of the punch joint 3 is provided with an air inlet which is axially communicated with a straight hole at the bottommost section of the inner cavity of the cooler 2, and two sides of the punch joint 3 are provided with four air exhaust holes which are symmetrically arranged at the center, are communicated with counter bores of the base of the cooler 2 and are arranged in a one-to-one correspondence manner according to the positions of four cooling air ports 23;

the die is characterized in that an air inlet hole and an inner cavity of a cooler form an air inlet channel from bottom to top, a gap between the outer wall of the cooler and the inner wall of a punch, a cooling air port, a counter bore of a base of the cooler and an exhaust hole form an exhaust channel from top to bottom, and a plurality of air outlets on the side wall of the cooler are communicated with the air inlet channel and the exhaust channel.

Embodiment III:

referring to fig. 4a, 4b and 4, the die of the press-and-blow method for manufacturing a small-mouth glass bottle of the present embodiment is substantially the same as that of the first embodiment, and only differs from the first embodiment in the connection portion between the cooler and the punch head, and the structure thereof is as follows:

the bottom end of the cooler 2 passes through a counter bore of the base of the cooler 2 to extend downwards and is tightly matched with a counter bore in the center of the top end of the punch head 3, a plurality of air outlets are axially arranged at intervals on the side wall, the inner cavity is a plurality of sections of straight holes which are sequentially communicated from top to bottom, and four axially through cooling air outlets are symmetrically distributed on the base of the cooler 2 and cling to the outer wall of the cooler 2 in a center;

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a little mouth glass bottle presses-blows method technology mould, cooler suit is in the drift inner chamber, leaves the interval between outer wall and the drift inner wall, and the drift connects with the shutoff of top portion in the counter bore of drift base, constitutes the overall structure of mould, characterized by:

2. The utility model provides a little mouth glass bottle presses-blows method technology mould, cooler suit is in the drift inner chamber, leaves the interval between outer wall and the drift inner wall, and the drift connects with the shutoff of top portion in the counter bore of drift base, constitutes the overall structure of mould, characterized by:

3. The utility model provides a little mouth glass bottle presses-blows method technology mould, cooler suit is in the drift inner chamber, leaves the interval between outer wall and the drift inner wall, and the drift connects with the shutoff of top portion in the counter bore of drift base, constitutes the overall structure of mould, characterized by: