CN112829155A

CN112829155A - Energy-saving environment-friendly hot-press forming machine and forming method thereof

Info

Publication number: CN112829155A
Application number: CN202110168345.8A
Authority: CN
Inventors: 石中玉; 郑恩华; 陈翔翔; 王关晴; 李华明; 郑炜
Original assignee: Shandong Anruige Precision Machinery Co ltd
Current assignee: Shandong Anruige Precision Machinery Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-05-25

Abstract

The invention relates to an energy-saving and environment-friendly hot-pressing forming machine and a forming method thereof. The invention comprises an inner machine and a heat insulation shell, wherein the inner machine is arranged in the heat insulation shell, a hydraulic main oil cylinder, a movable base, a lower heat insulation layer, a lower heating plate, a male die and a female die are sequentially arranged right above a lower base of the inner machine, pressure auxiliary oil cylinders are arranged at two ends of the movable base, guide upright posts are arranged at four corners of the upper base and the lower base, the pressure auxiliary oil cylinders control the forming female die to move up and down along the guide upright posts, the heat insulation layer is arranged right below the upper base, and the upper heating plate. When the heat-insulating shell is in work, the heat-insulating shell is closed, a draught fan forms a negative pressure state in the heat-insulating shell, and an exhaust port is arranged above the heat-insulating shell and outputs waste gas; the hydraulic main oil cylinder pushes upwards until the female die is contacted with the upper heating plate to realize pressing. The invention has simple structure design, convenient operation, energy conservation, effective improvement of working environment, pollution reduction, and overcoming of poor heat preservation effect, high heat loss rate, dust emission of powder and hot flue gas of the traditional hot-pressing forming machine.

Description

Energy-saving environment-friendly hot-press forming machine and forming method thereof

Technical Field

The invention belongs to the technical field of auxiliary devices of hot-pressing forming machines, and relates to an energy-saving and environment-friendly hot-pressing forming machine and a forming method thereof.

Background

The hot-press forming machine is widely applied to hot-press forming manufacturing of rubber, plastic molds, automobile brake pads, automobile lamp shells, instrument panel shells and the like. Compression molding uses a hot-press molding machine to perform molding processing on rubber and plastic, the core components of the compression molding machine are two hot-press plates with heating functions, a female die and a male die are respectively arranged on the two hot-press plates, the male die is fixedly arranged on a lower hot-press plate, the female die is controlled to lift in a short distance by a hydraulic auxiliary oil cylinder, the female die and the male die are charged when in contact during working, a male-female die is driven by a hydraulic main oil cylinder to move upwards, the female die and the male die heat and press materials, and finally the materials are shaped and form the required shape. However, as a production device participating in economic activities, the hot press forming machine inevitably needs to consider consumption reduction, energy conservation, environmental protection, production efficiency and the like of the device.

Although the heat insulation material is arranged on the connecting surface of the hot pressing plate and the machine body of the existing hot pressing machine and is used for cutting off the heat conduction between the hot pressing plate and the hot pressing machine, the heating surface of the hot pressing plate is directly exposed in the air, a considerable part of heat is dissipated in the air during working, so that the waste of heat is caused, the heat utilization rate is reduced, the requirement of high-efficiency utilization of energy is not met, and the deterioration of the workshop environment is caused by heat dissipation; the concave-convex mould of the existing hot-pressing forming machine is in plane contact with the heating plate, and because of a contact gap caused by raw material dust, the heat conduction resistance of a contact interface is reduced, the contact effect is poor, and the heat transfer efficiency is not high; meanwhile, the existing hot press heats and presses raw materials in the working and production process to generate hot smoke, and also generates raw material powder raise dust, so that the deterioration of the workshop environment is aggravated.

The equipment before transformation produces a large amount of heat radiation when producing, causes harm to the health of workers. In order to avoid excessive heat loss and electric energy waste, the workshop temperature is avoided from being too high, the heat preservation equipment is additionally arranged, and the equipment can be tidier and safer after being additionally arranged. When selecting the heat insulation material of the heat insulation equipment, not only practical and energy-saving needs to be paid attention to, but also the economical efficiency of the material needs to be carefully compared, and the reduction of heat dissipation loss is an important measure for energy conservation and consumption reduction of enterprises.

Disclosure of Invention

The invention aims to provide a hot-pressing forming machine which improves the working environment of a workshop, is efficient, energy-saving and environment-friendly and a forming method thereof.

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

the energy-saving environment-friendly hot-press forming machine comprises an inner machine and a heat insulation shell, wherein the inner machine is arranged in the heat insulation shell and comprises a lower base, a hydraulic main oil cylinder, a movable base, a lower heat insulation layer, a lower heating plate, a male die, a female die, a hydraulic auxiliary oil cylinder, an upper heat insulation layer, an upper heating plate and an upper base. The outer layer of the heat-insulating shell is a metal shell, the middle layer is a heat-insulating cotton layer, and the inner layer is a heat-resisting material. The lower base and the upper base are additionally provided with a support frame, the heat-insulating shell is fixed on the support frame to form a heat-insulating shell layer with the bottom serving as the base and the top serving as an upper opening, and the periphery of the heat-insulating shell layer is provided with a working window and a cover plate which are sealed on three sides.

The hydraulic main oil cylinder is arranged on the upper portion of the lower base, and a movable base is arranged above the hydraulic main oil cylinder. And a lower heat insulation layer, a lower heating plate, a male die and a female die are sequentially arranged above the movable base from bottom to top, wherein the female die is movable. And hydraulic auxiliary oil cylinders are arranged on two sides of the movable base, the upper ends of the hydraulic auxiliary oil cylinders are connected with the female die, and the lower ends of the hydraulic auxiliary oil cylinders are fixedly connected with the movable base. Four upright posts are arranged at four corners between the upper base and the lower base, the upright posts penetrate through the movable base and the female die, and the movable base and the female die move up and down by positioning of the upright posts. The hydraulic main oil cylinder controls the movable base to move up and down, and the hydraulic auxiliary oil cylinder controls the female die to move up and down. An upper heat insulation layer and an upper heating plate are fixed below the upper base.

The contact form between the heating plate and the concave-convex die is changed, and the contact gap between the heating plate and the contact surface of the concave-convex die, which is caused by the existence of raw material dust, is eliminated, so that the heat transfer efficiency is improved, and the working environment is improved.

And heat-conducting glue is added between the lower heating plate and the male die, and heat-conducting glue is brushed between the upper heating plate and the female die.

The upper part of the heat preservation shell is provided with a hole connecting pipeline which is connected with the draught fan, negative pressure is formed inside the heat preservation shell under the action of the draught fan, and then gas dust particles and the like in the sealed heat preservation metal shell are conveyed to the waste gas treatment device for treatment.

The invention has the beneficial effects that:

according to the energy-saving environment-friendly hot-press forming machine, the heat transmission to the base is reduced by mounting the heat insulation layer on the contact surfaces of the upper heating plate, the lower heating plate and the upper base and the lower base. The contact form between the heating plate and the concave-convex die is changed into sawtooth-shaped surface contact, groove-shaped contact and corrugated contact from plane contact, meanwhile, heat-conducting glue is added between the lower heating plate and the convex die, the heat-conducting glue is brushed between the upper heating plate and the concave die, the contact gap between the heating plate and the concave-convex die contact surface caused by the existence of raw material dust is eliminated, the heat-conducting thermal resistance of the contact interface is reduced, the heat transfer rate between the heating plate and the die contact surface is further improved, the contact area of the heat transfer surface is increased, and the heat transfer process is strengthened. Through set up the lagging casing in equipment periphery, blocked heat and to the environmental transfer to reduce the heat diffusion, still can avoid simultaneously leading to the phenomenon that workshop environment worsens because of the heat diffusion. The cover plate of the heat preservation shell is controlled to be opened and closed by a hydraulic small oil cylinder, and raw materials are added and finished products are taken out conveniently. Make the inside operational environment who has formed a negative pressure of lagging casing through the draught fan, release in the reduction production process raw materials powder raise dust and hot flue gas to the environment, handle by dedicated exhaust-gas treatment equipment and avoid workshop environment to worsen. The invention has simple structure design, good heat preservation effect and convenient operation, reduces energy consumption in the whole working process, improves the working efficiency and improves the working environment. The hot press molding method can be applied to hot press molding manufacture of automobile brake pads, automobile lamp shells, instrument panel shells and the like.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention.

Fig. 2a and 2b are a front housing schematic and a front housing side view, respectively, of an embodiment of the present invention.

Fig. 3a, 3b and 3c are schematic views of a heating plate and a male and female mold in combination according to an embodiment of the present invention.

In the figure: the device comprises a lower base 1, a hydraulic main oil cylinder 2, a movable base 3, a lower heat insulation layer 4, a lower heating plate 5, a male die 6, a heat insulation layer 7, an upper base 8, an upper heat insulation layer 9, an upper heating plate 10, a female die 11, a stand column 12, a hydraulic auxiliary oil cylinder 13, an oil tank 14, a metal shell 15, a hydraulic small oil cylinder 16, a slide rail 17, a straight rod 18, a cover plate 19 and heat-conducting glue 20.

Detailed Description

The main concept principle of the invention is as follows: the invention has a hot press forming machine body and an external metal shell auxiliary device. The traditional equipment only has a hot-press forming machine part and has certain defects in the production of products. The metal shell is added, negative pressure is formed inside the metal shell, the contact form between the heating plate and the concave-convex die is improved, the contact gap between the heating plate and the contact surface of the concave-convex die, which is caused by the existence of raw material dust, is eliminated, the heat transfer efficiency is improved, and the working environment is improved.

The invention is characterized in that a heat preservation device shell is additionally arranged outside the equipment, the outer layer of the heat preservation shell is a metal shell, the middle layer is a heat preservation cotton layer, and the inner layer is a heat-resistant material; the lower base and the upper base are additionally provided with a support frame, the heat-insulating shell is fixed on the support frame to form a heat-insulating shell layer with a base at the bottom and an opening at the upper part at the top, and the periphery of the heat-insulating shell layer is a device with three sealed sides and one working window and a cover plate at one side; on the basis of the original hot-press forming machine, the contact form between the heating plate and the concave-convex mold is changed, so that the plane contact is changed into sawtooth-shaped surface contact, groove-shaped contact or corrugated contact and the like, heat-conducting glue is added between the lower heating plate and the convex mold, heat-conducting glue is brushed between the upper heating plate and the concave mold, and heat-conducting silicone grease, heat-conducting silica gel, polyurethane glue and the like can be used as the heat-conducting glue; slide rails are additionally arranged on two sides of a cover plate of the front working window, and the cover plate slides up and down under the control of a small hydraulic oil cylinder; the upper part is provided with a hole and connected with a pipeline which is connected with a draught fan; the induced draft fan is mainly used for forming negative pressure and further conveying gas dust particles and the like in the sealed heat-preservation metal shell to the waste gas treatment device for treatment.

Referring to the attached fig. 1, the invention provides an energy-saving and environment-friendly hot-pressing forming machine, which comprises an inner machine and a heat-insulating shell, wherein the inner machine comprises: the lower base 1 is provided with an oil tank 14 at the center of the lower base 1, a hydraulic master cylinder 2 is arranged above the oil tank 14, and a movable base 3 is arranged above the hydraulic master cylinder 2. A lower heat insulation layer 4, a lower heating plate 5, a male die 6 and a female die 11 are sequentially fixed right above the movable base 3 from bottom to top, wherein the female die 11 is movable. Hydraulic sub-cylinders 13 are provided on both sides of the movable base 3. The upper part of the hydraulic auxiliary oil cylinder 13 is connected with the female die 11, and the lower part of the hydraulic auxiliary oil cylinder 13 is fixedly connected with the movable base 3. Four upright posts 12 are arranged at four corners between the upper base 8 and the lower base 1, and the upright posts 12 penetrate through the movable base 3 and the female die 11. The movable base 3 and the die 11 are positioned by the upright post 12, the die 11 is controlled by the hydraulic auxiliary oil cylinder 13, and the movable base 3 is controlled by the hydraulic main oil cylinder 2 to move up and down along the upright post 12. An upper heat insulation layer 9 and an upper heating plate 10 are sequentially arranged below the upper base 8. And heat-conducting glue 20 is arranged between the lower heating plate 5 and the male die 6, the heat-conducting glue 20 is brushed between the upper heating plate 10 and the female die 11 during working, and heat-conducting silicone grease, polyurethane glue and the like can be used as the heat-conducting glue.

The upper base 8 and the lower base 1 are respectively connected with a support frame, and the support frames are fixedly connected with the heat preservation shell. The outer layer of the heat preservation shell is a metal shell 15, and the inner side of the heat preservation shell is provided with a heat preservation layer 7. The middle layer heat-insulating material of the heat-insulating layer 7 can be rock wool, aluminum silicate fiber cotton, aluminum chlorate fiber cotton, cement perlite and the like, and the inner layer refractory material can be aluminum powder heat-resistant paint for blocking a passage for transferring heat to the environment, so that heat diffusion is reduced, and meanwhile, the phenomenon that the workshop environment is deteriorated due to heat diffusion can be avoided.

The upper part of the metal shell 15 is provided with a hole and is connected with an induced draft fan through a pipeline for discharging raw material powder dust and hot flue gas.

Referring to fig. 2a and fig. 2b, the energy-saving and environment-friendly hot press forming machine provided by the invention has a working window on the front, two slide rails 17 are mounted on the housing above the working window, and a hydraulic small oil cylinder 16 is arranged above the working window and controls a cover plate 19 to slide up and down through the slide rails 17 through a straight rod 18.

As shown in fig. 3a, 3b and 3c, the contact form between the upper and lower heating plates and the male and female molds may be changed, in which fig. 3a is a plane contact, fig. 3b is a right-angled zigzag contact, and fig. 3c is an isosceles zigzag contact. The two latter modes can increase the heat transfer area, reduce the influence of raw material dust, and are also favorable for the cooperation of the heating plate and the concave-convex die, thereby preventing dislocation and improving the forming effect. Meanwhile, the heat-conducting glue 20 is added between the lower heating plate and the male die, the heat-conducting glue 20 is brushed between the upper heating plate and the female die, a contact gap between the heating plate and the contact surface of the female die, which is caused by the existence of raw material dust, is eliminated, the heat-conducting thermal resistance of the contact interface is reduced, the heat transfer rate between the heating plate and the contact surface of the die is further improved, the contact area of the heat transfer surface is increased, and the heat transfer process is enhanced.

The invention provides a forming method of an energy-saving environment-friendly hot-pressing forming machine, which comprises the following steps:

when the device works, the whole device is in a closed state, a negative pressure environment is formed inside the device, and the pressure range is-500 Pa to +100 Pa.

And (3) turning on a power supply of the device, starting the induced draft fan to work, turning on a mold temperature rising switch to start preheating, wherein the mold comprises a female mold 11 and a male mold 6.

Setting pressing technological parameters, measuring whether the temperature of the die reaches a required range, and adjusting the depth of the die cavity and rapidly limiting the rising of the die.

The hydraulic small oil cylinder 16 controls the cover plate 19 to slide upwards along the slide rail 17 through the straight rod 18, and the working window is opened. The hydraulic auxiliary oil cylinder 13 controls the female die 11 to move up and down, so that the female die 11 and the male die 6 are contacted with each other. The automatic material weighing machine finishes material weighing, after the mold male and female die surfaces are uniformly sprayed with the release agent, the materials are brushed to be dry by a brush, the materials are thrown into the die cavity from a working window, and are spread by a tool or a hand to be uniformly observed by eyes. Heat-conducting glue is brushed between the upper heating plate 10 and the female die 11, and the small hydraulic oil cylinder 16 controls the cover plate 19 to slide downwards to close the working window.

When an 'automatic start' button is pressed, the internal machine automatically starts a pressing program, and the hydraulic main oil cylinder 2 pushes the movable base 3 and the upper parts of the movable base 3 to move upwards until the female die 11 is contacted with the upper heating plate 10. After the two pressing circulation processes, the hydraulic auxiliary oil cylinder 13 pulls the female die 11 downwards, the hydraulic small oil cylinder 13 controls the cover plate 19 to slide upwards, and the finished product is pushed out of the die to finish the pressing process. In the whole process of hot pressing work, raw material powder raise dust and hot flue gas in the equipment are discharged through the induced draft fan and are subjected to pollution-free treatment, so that the environment is prevented from being polluted.

The invention improves the current situations of high energy consumption, no energy conservation, no environmental protection and low efficiency of the existing hot-press molding equipment. The invention can block the channel for transferring heat to the environment, thereby reducing heat diffusion and avoiding the phenomenon of workshop environment deterioration caused by heat diffusion; in addition, negative pressure can be formed by sealing the working space of the hot press, the release of raw material powder dust and hot flue gas to the environment in the production process is reduced, and the deterioration of the workshop environment can be avoided.

In summary, the present invention is not limited to the above-described embodiments. Those skilled in the art can make several changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications should fall within the scope of the present invention.

Claims

1. An energy-concerving and environment-protective type thermoforming machine, includes interior machine and lagging casing, its characterized in that:

the inner machine is arranged in the heat-insulating shell and comprises a lower base, a hydraulic main oil cylinder, a movable base, a lower heat-insulating layer, a lower heating plate, a male die, a female die, a hydraulic auxiliary oil cylinder, an upper heat-insulating layer, an upper heating plate and an upper base;

the hydraulic main oil cylinder is arranged at the upper part of the lower base, and a movable base is arranged above the hydraulic main oil cylinder;

a lower heat insulation layer, a lower heating plate, a male die and a female die are sequentially arranged above the movable base from bottom to top, hydraulic auxiliary oil cylinders are arranged on two sides of the movable base, the upper ends of the hydraulic auxiliary oil cylinders are connected with the female die, and the lower ends of the hydraulic auxiliary oil cylinders are fixedly connected with the movable base;

four corners between the upper base and the lower base are provided with upright columns, the upright columns penetrate through the movable base and the female die, and the movable base and the female die move up and down by positioning of the upright columns;

the hydraulic main oil cylinder controls the movable base to move, and the hydraulic auxiliary oil cylinder controls the female die to move;

an upper heat insulation layer and an upper heating plate are fixed below the upper base;

and heat-conducting glue is arranged between the lower heating plate and the male die and between the upper heating plate and the female die.

2. The energy-saving environment-friendly hot-press forming machine according to claim 1, characterized in that:

the upper base and the lower base are respectively connected with a support frame, the support frames are connected with the heat-insulating shell, the outer layer of the heat-insulating shell is a metal shell, and the inner side of the heat-insulating shell is provided with a heat-insulating layer.

3. The energy-saving environment-friendly hot-press forming machine according to claim 2, characterized in that:

the middle layer of the heat-insulating layer is made of rock wool, aluminum silicate fiber cotton, aluminum chlorate fiber cotton or cement perlite, and the inner layer of the heat-insulating layer is made of aluminum powder heat-resistant paint.

4. The energy-saving environment-friendly hot-press forming machine according to claim 1, characterized in that:

the contact form between the upper heating plate and the female die and between the lower heating plate and the male die comprises plane contact, sawtooth-shaped surface contact, groove-shaped contact and corrugated-shaped contact.

5. The energy-saving environment-friendly hot-press forming machine according to claim 1, characterized in that:

the heat-conducting glue is heat-conducting silicone grease or polyurethane glue.

6. The energy-saving environment-friendly hot-press forming machine according to claim 2, characterized in that:

the upper part of the metal shell is provided with a hole and is connected with a pipeline, the metal shell is connected with an induced draft fan, and the metal shell is provided with a waste gas treatment device.

7. The energy-saving environment-friendly hot-press forming machine according to claim 1, characterized in that:

the front surface of the metal shell is provided with a working window, and the working window adopts a sliding type opening and closing mode.

8. An energy-saving environment-friendly hot-press forming machine, which is used for the forming method of the energy-saving environment-friendly hot-press forming machine according to claim 1, and is characterized in that:

turning on a power supply of equipment, starting an induced draft fan, turning on a mold temperature rising switch to start preheating and adjusting pressing technological parameters; measuring whether the temperatures of the female die and the male die of the die reach the required range, and adjusting the depth of the die cavity and the rapid limiting of the rising of the die;

opening a working window, and controlling the female die to move by the hydraulic auxiliary oil cylinder to enable the female die and the male die to be in contact with each other; weighing the materials by an automatic material weighing machine, uniformly spraying a release agent on the surfaces of the female die and the male die, then brushing the release agent, and throwing the materials into a die cavity from a working window and flattening the materials; heat-conducting glue is brushed between the upper heating plate and the female die;

closing the working window; pressing an automatic start button, wherein the internal machine automatically starts a pressing program, and a hydraulic main oil cylinder pushes the movable base and the accessories above the movable base to move upwards until the female die is contacted with the upper heating plate; and (4) pressing two circulation processes, pulling down the female die by the hydraulic auxiliary oil cylinder, opening a working window, and pushing the finished product out of the die to finish pressing.

9. The forming method of an energy-saving environment-friendly hot-press forming machine according to claim 8, characterized in that: when in operation, the metal shell is closed, a negative pressure environment is formed inside, and the pressure range is-500 Pa to +100 Pa.