CN113635579A - Kettle mouth calendering device and process - Google Patents

Abstract

The invention relates to the technical field of blow molding, and discloses a kettle mouth calendering device and a kettle mouth calendering process. According to the invention, through the set of pressing sheets arranged in the walking groove, the extrusion of a molten forming material in the walking groove can be realized, the pot mouth of a blow-molded product is calendered, the whole process of blow molding is avoided, the problem that the wall thickness of the pot mouth is not uniform enough, the pot mouth surface is not smooth enough is avoided, and the pot mouth is not blow-molded well along with the thicker product thickness, so that the high efficiency and the aesthetic property of the device for product forming are improved.

Description

Kettle mouth calendering device and process

Technical Field

The invention relates to the technical field of blow molding, in particular to a kettle mouth calendering device and a kettle mouth calendering process.

Background

Blow molding is a rapidly developing plastic processing method. The blow molding process began during world war ii for the production of low density polyethylene vials. In the late 50 s, the blow molding technology has been widely used with the advent of high density polyethylene and the development of blow molding machines. The volume of the hollow container can reach thousands of liters, and computer control is adopted in some production. Suitable plastics for blow molding are polyethylene, polyvinyl chloride, polypropylene, polyester, etc., and the resulting hollow containers are widely used as industrial packaging containers. Blow molding can be classified into extrusion blow molding and injection blow molding according to the parison making method, and newly developed are multilayer blow molding and stretch blow molding.

Traditional blow molding technology, whole product are obtained through the blow molding, and kettle mouth department wall thickness is not even enough, and kettle mouth face is not level and smooth enough to product thickness is thicker, and the kettle mouth is better, and traditional blow mold only possesses the blowing chamber, and the structure is more single, can not realize that blow molding and compression molding technology go on simultaneously. Therefore, the skilled person provides a kettle mouth calendering device and a kettle mouth calendering process to solve the problems in the background art.

Disclosure of Invention

The invention aims to provide a kettle mouth calendering device and a kettle mouth calendering process so as to solve the problems in the background technology.

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

a kettle mouth calendering device comprises a stamping support, wherein a control box is arranged on one side of the stamping support, a stamping table is arranged at the bottom of the stamping support, guard plates are arranged on two sides of the stamping table, one side of each guard plate is fixedly connected with two sides of the bottom of the stamping support, first mounting plates are fixedly connected with two sides of the top of the stamping table, a calendering assembly is arranged at the central end of the two first mounting plates at the top of the stamping table, a press plate is arranged at the top of the calendering assembly, a first oil cylinder is fixedly connected with the top of the press plate, the top of the first oil cylinder is fixedly connected with the top of the stamping support, second oil cylinders are fixedly connected with two sides of the bottom of the calendering assembly, the bottom of each second oil cylinder is fixedly connected with one side of the first mounting plate, third oil cylinders are fixedly connected with two sides of the top of the calendering assembly, the bottom of each third oil cylinder is fixedly connected with one side of the first mounting plate, the calendering assembly comprises a sub die and a master die.

As a still further scheme of the invention: the punching machine is characterized in that a sliding groove is formed in the top of the punching table, a sliding block is arranged at the bottom of the rolling assembly, the bottom of the rolling assembly is slidably connected with the inside of the sliding groove, and the rolling assembly can stably and directionally move at the top of the punching table through the sliding groove formed in the top of the punching table, so that the running stability of the punching table is ensured, and the sealing performance of the joint is better.

As a still further scheme of the invention: the utility model discloses a kettle mouth, including calendering subassembly, preforming one side, third hydro-cylinder one end, just third hydro-cylinder one end and a set of preforming opposite side fixed connection, the wall department thickness that can realize the kettle mouth at the calendering in-process is even, and kettle mouth face is level and smooth, and has the screw thread, the preforming one side is seted up screw thread, third hydro-cylinder one end periphery with walking inslot portion one side through connection, just third hydro-cylinder one end and a set of preforming opposite side fixed connection, through the removal of a set of preforming that sets up in walking inslot portion, can extrude the molten molding material of filling up the walking inslot portion, realizes the calendering of kettle mouth.

As a still further scheme of the invention: the kettle-shaped cavity is formed in the center end of the bottom of the walking groove, the diameter of the top of the kettle-shaped cavity is smaller than the width of the inner wall of the walking groove, the diameter of the bottom of the kettle-shaped cavity is larger than the diameter of the top of the kettle-shaped cavity, a set of pressing sheets can be conveniently moved through the arranged walking groove, and a kettle body can be formed in an injection molding mode through the arranged kettle-shaped cavity.

As a still further scheme of the invention: the bottom center end of the pressing plate is fixedly connected with a hole expanding rod, the bottom of the hole expanding rod is in penetrating connection with the walking groove and the inside of the kettle-shaped cavity, and a closed space can be formed by the hole expanding rod and the other side of the pressing sheet, so that a kettle opening at the top of the kettle-shaped cavity is formed through compression molding.

As a still further scheme of the invention: the hole expanding rod is provided with a plurality of air holes in the periphery, one side of the pressing plate is provided with an air inlet pipe, and the inside of the air inlet pipe is connected with the inside of the air holes in a penetrating mode.

As a still further scheme of the invention: the feed port has been seted up to kettle shape chamber bottom, calendering subassembly bottom both sides fixedly connected with inlet pipe, the feed port inside with the inside through connection of inlet pipe makes things convenient for fused forming material to enter into walking groove and kettle shape intracavity portion through the feed port that sets up, realizes feeding in raw material to walking groove and kettle shape intracavity portion.

As a still further scheme of the invention: the inner part of the kettle-shaped cavity is provided with a set of elastic sheets, one set of elastic sheets is fixedly connected with two reset springs, one side of each reset spring is fixedly connected with one side of the inner wall of the kettle-shaped cavity, and when high-pressure gas is injected into the inner part of the kettle-shaped cavity, the forming material expands and deforms through the set of elastic sheets, and the set of elastic sheets arranged in the inner part of the kettle-shaped cavity move towards the two sides of the inner wall of the kettle-shaped cavity respectively to reserve space for blow molding of the forming material.

A kettle mouth calendering process comprises the following steps:

s1: die assembly of the calendering component: the sub die and the female die of the calendering component are pushed by a second oil cylinder to be combined at the top of the stamping table, so that a complete walking groove is formed at the top of the calendering component, and a complete pot-shaped cavity is formed inside the calendering component;

s2: sealing the walking groove: the pressing plate is pushed by the first oil cylinder to be compacted with the top of the rolling assembly, so that the inside of the walking groove and the inside of the kettle-shaped cavity form a complete sealing state, and meanwhile, the reaming rod enters the walking groove and the inside of the kettle-shaped cavity;

s3: and (3) injection molding of a mold cavity: the feeding pipe is in through connection with feeding equipment, and is filled with molten molding materials into the traveling groove and the kettle-shaped cavity through the feeding hole, so that the traveling groove and the kettle-shaped cavity are filled with the molten molding materials;

s4: kettle mouth rolling: a group of pressing sheets in the traveling groove gradually move towards the inner center end of the traveling groove under the pushing action of a third oil cylinder until a complete pot-shaped state is formed at the top of the pot-shaped cavity and the periphery of the reaming rod, and meanwhile, the group of pressing sheets extrude the molding material in the traveling groove in the process of moving in the traveling groove to form a complete threaded pot opening;

s5: blow molding of the kettle body: high-pressure gas injects high-pressure gas to kettle shape intracavity portion through a plurality of gas pockets that intake pipe and reaming pole periphery were seted up, makes the position separation that fashioned kettle shape product and reaming pole are connected, is convenient for realize the drawing of patterns to and along with kettle shape intracavity portion injects high-pressure gas, shaping material inflation deformation, a set of shell fragment that kettle shape intracavity portion set up moves to kettle shape intracavity wall both sides respectively, reserves the space for shaping material's blow molding, finally reaches complete kettle shape product structure.

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

1. through the group of pressing sheets arranged in the walking groove, the molten molding material can be extruded in the walking groove, the spout of a blow molding product is calendered, the whole process of blow molding is avoided, the problem that the wall thickness at the spout is not uniform enough and the spout surface is not smooth enough is avoided, and the spout is not blow molded well along with the thicker product, so that the high efficiency and the attractiveness of the device for product molding are improved;

2. through a plurality of gas pockets of seting up in the reaming pole periphery of clamp plate bottom to with the inside through connection of air inlet pipe, inject high-pressure gas into kettle shape intracavity portion, make the position separation that fashioned kettle shape product and reaming pole are connected, be convenient for realize the drawing of patterns, and use with a set of preforming cooperation that the walking inslot portion set up, make things convenient for the shaping of product, promote the device's practicality.

Drawings

FIG. 1 is a schematic view of the overall structure of a kettle mouth calendering device and process;

FIG. 2 is a schematic structural diagram of a kettle mouth calendering device and a calendering component in the process;

FIG. 3 is a schematic view of a kettle mouth calendering device and a separated structure of a calendering component in the technology;

FIG. 4 is a schematic view of a kettle mouth calendering device and a sub-die structure in the process;

FIG. 5 is a schematic cross-sectional view of a stamping bracket of a kettle mouth calendering device and process;

FIG. 6 is a schematic cross-sectional view of a kettle mouth rolling device and a rolling assembly in the process.

In the figure: 1. stamping a bracket; 2. a control box; 3. a punching stage; 301. a chute; 4. a protection plate; 5. a first mounting plate; 6. a calendaring assembly; 601. a sub-mold; 602. a female die; 603. a traveling groove; 604. tabletting; 605. a pot-shaped cavity; 606. a feed port; 607. a spring plate; 7. pressing a plate; 701. a hole expanding rod; 702. air holes; 703. an air inlet pipe; 8. a first cylinder; 9. a second cylinder; 10. a third oil cylinder; 11. and (4) feeding a pipe.

Detailed Description

Referring to fig. 1 to 6, in an embodiment of the present invention, a kettle mouth rolling device includes a stamping support 1, a control box 2 is disposed on one side of the stamping support 1, a stamping table 3 is disposed on the bottom of the stamping support 1, two protection plates 4 are disposed on both sides of the stamping table 3, one side of each of the two protection plates 4 is fixedly connected to both sides of the bottom of the stamping support 1, first mounting plates 5 are fixedly connected to both sides of the top of the stamping table 3, a rolling assembly 6 is disposed at the center end of each of the two first mounting plates 5 on the top of the stamping table 3, a pressing plate 7 is disposed on the top of the rolling assembly 6, a first oil cylinder 8 is fixedly connected to the top of the stamping support 1, second oil cylinders 9 are fixedly connected to both sides of the bottom of the rolling assembly 6, the bottom of the second oil cylinder 9 is fixedly connected to one side of the first mounting plate 5, third oil cylinders 10 are fixedly connected to both sides of the top of the rolling assembly 6, the bottom of the third oil cylinder 10 is fixedly connected with one side of the first mounting plate 5, and the calendaring assembly 6 comprises a sub die 601 and a mother die 602.

In fig. 1: spout 301 has been seted up at 3 tops of stamping station, and calendering subassembly 6 bottoms is provided with the slider, and calendering subassembly 6 bottoms and the inside sliding connection of spout 301, through the spout 301 that 3 tops of stamping station were seted up, conveniently calendering subassembly 6 is at the steady directional removal in 3 tops of stamping station, guarantees the operating stability of stamping station 3, makes the junction leakproofness better.

In fig. 3: the walking groove 603 has been seted up at 6 tops of calendering subassembly, the inside a set of preforming 604 that is provided with of walking groove 603, screw thread has been seted up to a set of preforming 604 one side, the inside one side through connection of third hydro-cylinder 10 one end periphery and walking groove 603, and third hydro-cylinder 10 one end and a set of preforming 604 opposite side fixed connection, a set of preforming 604 through setting up removes in walking groove 603 is inside, can extrude filling the inside fused forming material of walking groove 603, realize the calendering of kettle mouth, and the screw thread of seting up through a set of preforming 604 one side, can be at the wall department thickness that the in-process of calendering realized the kettle mouth even, kettle mouth face levels, and has the screw thread.

In fig. 3: the bottom center end of the walking groove 603 is provided with a pot-shaped cavity 605, the top diameter of the pot-shaped cavity 605 is smaller than the width of the inner wall of the walking groove 603, the bottom diameter of the pot-shaped cavity 605 is larger than the top diameter of the pot-shaped cavity 605, a set of pressing sheets 604 can be moved conveniently through the arranged walking groove 603, and the pot-shaped body can be formed through injection molding through the arranged pot-shaped cavity 605.

In fig. 3: the center end of the bottom of the pressing plate 7 is fixedly connected with a hole expanding rod 701, the bottom of the hole expanding rod 701 is connected with the walking groove 603 and the inner part of the pot-shaped cavity 605 in a penetrating way, and a closed space can be formed on the other side of the pressing plate 604 through the arranged hole expanding rod 701, so that the pot mouth at the top of the pot-shaped cavity 605 is molded through pressing.

In fig. 4: the bottom of the kettle-shaped cavity 605 is provided with a feed hole 606, the two sides of the bottom of the calendering component 6 are fixedly connected with feed pipes 11, the interior of the feed hole 606 is in through connection with the interior of the feed pipe 11, and molten molding materials can conveniently enter the walking groove 603 and the kettle-shaped cavity 605 through the arranged feed hole 606, so that the feeding of the walking groove 603 and the kettle-shaped cavity 605 is realized; a plurality of air holes 702 are formed in the periphery of the hole expanding rod 701, an air inlet pipe 703 is arranged on one side of the pressing plate 7, and the inside of the air inlet pipe 703 is connected with the insides of the air holes 702 in a penetrating manner; a set of elastic pieces 607 is arranged in the kettle-shaped cavity 605, two return springs are fixedly connected to one side of the set of elastic pieces 607, and one side of each return spring is fixedly connected to one side of the inner wall of the kettle-shaped cavity 605.

A kettle mouth calendering process comprises the following steps:

s1: die assembly of the calendering component: the sub die 601 and the mother die 602 of the calendering component 6 are pushed by the second oil cylinder 9 to be combined at the top of the stamping platform 3, so that a complete walking groove 603 is formed at the top of the calendering component 6, and a complete pot-shaped cavity 605 is formed inside the calendering component 6;

s2: sealing the walking groove: the pressing plate 7 is pushed by the first oil cylinder 8 and compacted with the top of the rolling assembly 6, so that the inside of the walking groove 603 and the inside of the pot-shaped cavity 605 form a complete sealing state, and meanwhile, the reaming rod 701 enters the walking groove 603 and the pot-shaped cavity 605;

s3: and (3) injection molding of a mold cavity: the feeding pipe 11 is connected with the feeding device in a penetrating way, and fills the molten molding material into the traveling groove 603 and the kettle-shaped cavity 605 through the feeding hole 606, so that the traveling groove 603 and the kettle-shaped cavity 605 are filled with the molten molding material;

s4: kettle mouth rolling: a group of pressing sheets 604 in the traveling groove 603 gradually move towards the inner center end of the traveling groove 603 under the pushing action of the third oil cylinder 10 until a complete pot-shaped state is formed at the top of the pot-shaped cavity 605 and the periphery of the reaming rod 701, and meanwhile, the group of pressing sheets 604 extrude the molding material in the traveling groove 603 in the process of moving in the traveling groove 603 to form a complete threaded pot opening;

s5: blow molding of the kettle body: high-pressure gas passes through a plurality of gas pockets 702 that intake pipe 703 and reaming pole 701 periphery were seted up and injects high-pressure gas to kettle shape chamber 605 is inside, the position separation that makes fashioned kettle shape product and reaming pole 701 be connected, and along with kettle shape chamber 605 is inside to inject high-pressure gas, the shaping material inflation deformation, a set of shell fragment 607 that kettle shape chamber 605 is inside to be set up moves to kettle shape chamber 605 inner wall both sides respectively, for the blow molding headspace of shaping material, be convenient for realize the drawing of patterns, finally reach complete kettle shape product structure.

The working principle of the invention is as follows: when the device works, firstly, the sub die 601 and the mother die 602 of the rolling assembly 6 are pushed by the second oil cylinder 9 to be combined at the top of the stamping table 3, so that a complete walking groove 603 is formed at the top of the rolling assembly 6, and a complete pot-shaped cavity 605 is formed inside the rolling assembly 6, the pressing plate 7 is compacted with the top of the rolling assembly 6 by the pushing of the first oil cylinder 8, so that a complete sealing state is formed inside the walking groove 603 and the pot-shaped cavity 605, meanwhile, the reaming rod 701 enters the walking groove 603 and the pot-shaped cavity 605, the feeding pipe 11 is in through connection with the feeding device, and is filled with molten molding materials into the walking groove 603 and the pot-shaped cavity 605 through the feeding hole 606, so that the inside of the walking groove 603 and the inside of the pot-shaped cavity 605 are filled with the molten molding materials, a group of pressing sheets 604 inside the walking groove 603 gradually moves towards the inner center end of the walking groove 603 by the pushing action of the third oil cylinder 10, until a complete kettle-shaped state is formed between the top of the kettle-shaped cavity 605 and the periphery of the reaming rod 701, a group of pressing sheets 604 extrude the forming material in the walking groove 603 in the process of moving in the walking groove 603 to form a complete threaded kettle opening, high-pressure gas injects the high-pressure gas into the kettle-shaped cavity 605 through the gas inlet pipe 703 and a plurality of gas holes 702 formed in the periphery of the reaming rod 701, so that the formed kettle-shaped product is separated from the part connected with the reaming rod 701, demolding is convenient to realize, and the forming material expands and deforms along with the injection of the high-pressure gas into the kettle-shaped cavity 605, a group of elastic sheets 607 arranged in the kettle-shaped cavity 605 respectively move towards two sides of the inner wall of the kettle-shaped cavity 605, a space is reserved for blow molding of the forming material, and finally, a complete kettle-shaped product structure is achieved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.

Claims (9)

1. The kettle mouth calendering device comprises a stamping support (1) and is characterized in that a control box (2) is arranged on one side of the stamping support (1), a stamping platform (3) is arranged at the bottom of the stamping support (1), protection plates (4) are arranged on two sides of the stamping platform (3), one side of each protection plate (4) is fixedly connected with two sides of the bottom of the stamping support (1), two sides of the top of the stamping platform (3) are fixedly connected with first mounting plates (5), two central ends of the top of the stamping platform (3) are provided with calendering components (6), the top of each calendering component (6) is provided with a pressing plate (7), the top of each pressing plate (7) is fixedly connected with a first oil cylinder (8), the top of each first oil cylinder (8) is fixedly connected with the top of the stamping support (1), two sides of the bottom of each calendering component (6) are fixedly connected with a second oil cylinder (9), the bottom of the second oil cylinder (9) is fixedly connected with one side of the first mounting plate (5), the two sides of the top of the rolling assembly (6) are fixedly connected with third oil cylinders (10), the bottom of each third oil cylinder (10) is fixedly connected with one side of the first mounting plate (5), and the rolling assembly (6) comprises a sub die (601) and a female die (602).

2. The kettle mouth calendering device according to claim 1, wherein a sliding groove (301) is formed at the top of the punching platform (3), a sliding block is arranged at the bottom of the calendering component (6), and the bottom of the calendering component (6) is in sliding connection with the inside of the sliding groove (301).

3. The kettle mouth calendering device according to claim 1, wherein a traveling groove (603) is formed at the top of the calendering component (6), a set of pressing sheets (604) is arranged inside the traveling groove (603), one side of the set of pressing sheets (604) is provided with a thread, the periphery of one end of the third oil cylinder (10) is connected with one side inside the traveling groove (603) in a penetrating manner, and one end of the third oil cylinder (10) is fixedly connected with the other side of the set of pressing sheets (604).

4. The kettle mouth calendering device according to claim 3, wherein a kettle-shaped cavity (605) is opened at the bottom center end of the walking groove (603), the top diameter of the kettle-shaped cavity (605) is smaller than the width of the inner wall of the walking groove (603), and the bottom diameter of the kettle-shaped cavity (605) is larger than the top diameter of the kettle-shaped cavity (605).

5. A kettle mouth calendering device as claimed in claim 3, wherein a hole expanding rod (701) is fixedly connected to the central end of the bottom of the pressure plate (7), and the bottom of the hole expanding rod (701) is connected with the inside of the walking groove (603) and the kettle-shaped cavity (605) in a penetrating manner.

6. The kettle mouth rolling device according to claim 5, wherein a plurality of air holes (702) are formed in the periphery of the hole expanding rod (701), an air inlet pipe (703) is arranged on one side of the pressing plate (7), and the inside of the air inlet pipe (703) is connected with the inside of the plurality of air holes (702) in a penetrating manner.

7. The kettle mouth calendering device according to claim 3, wherein a feeding hole (606) is formed at the bottom of the kettle-shaped cavity (605), the feeding pipe (11) is fixedly connected to two sides of the bottom of the calendering assembly (6), and the inside of the feeding hole (606) is connected with the inside of the feeding pipe (11) in a penetrating manner.

8. A kettle mouth calendering device as in claim 4, wherein a set of spring sheets (607) is arranged inside the kettle-shaped cavity (605), one side of the set of spring sheets (607) is fixedly connected with two return springs, and one side of each return spring is fixedly connected with one side of the inner wall of the kettle-shaped cavity (605).

9. A kettle mouth calendering process comprises the following steps:

s1: die assembly of the calendering component: the sub die (601) and the main die (602) of the calendering component (6) are pushed by a second oil cylinder (9) to be combined at the top of the stamping platform (3), so that a complete walking groove (603) is formed at the top of the calendering component (6), and a complete pot-shaped cavity (605) is formed inside the calendering component (6);

s2: sealing the walking groove: the pressing plate (7) is pushed by the first oil cylinder (8) and compacted with the top of the rolling assembly (6), so that the inside of the walking groove (603) and the inside of the pot-shaped cavity (605) form a complete sealing state, and meanwhile, the hole expanding rod (701) enters the walking groove (603) and the inside of the pot-shaped cavity (605);

s3: and (3) injection molding of a mold cavity: the feeding pipe (11) is in through connection with feeding equipment, and fills the molten molding material into the traveling groove (603) and the kettle-shaped cavity (605) through the feeding hole (606), so that the traveling groove (603) and the kettle-shaped cavity (605) are filled with the molten molding material;

s4: kettle mouth rolling: a group of pressing sheets (604) in the walking groove (603) gradually move towards the inner center end of the walking groove (603) under the pushing action of a third oil cylinder (10) until a complete pot-shaped state is formed at the top of the pot-shaped cavity (605) and the periphery of the reaming rod (701), and meanwhile, the group of pressing sheets (604) extrude the forming material in the walking groove (603) in the moving process in the walking groove (603) to form a complete threaded pot opening;

s5: blow molding of the kettle body: high-pressure gas passes through a plurality of gas pockets (702) that intake pipe (703) and reaming pole (701) periphery were seted up and injects high-pressure gas to kettle shape chamber (605) inside, the position separation that makes fashioned kettle shape product be connected with reaming pole (701), be convenient for realize the drawing of patterns, and along with kettle shape chamber (605) inside injection high-pressure gas, the shaping material inflation deformation, a set of shell fragment (607) of kettle shape chamber (605) inside setting move to kettle shape chamber (605) inner wall both sides respectively, reserve space for the blow molding of shaping material, finally reach complete kettle shape product structure.

Images