阅读说明：本技术 一种塑胶连续模压成型设备及加工方法 (Plastic continuous compression molding equipment and processing method ) 是由 胡锐 胡承华 于 2021-09-22 设计创作，主要内容包括：本发明公开了一种塑胶连续模压成型设备及加工方法,塑胶连续模压成型设备包括：型腔部件、多个型模组合单元和压模部件,型腔部件包括型腔外管、设置于型腔外管内的型腔内杆,型腔内杆的外周壁与型腔外管的内周壁形成上下贯穿且呈环状的成型腔；型模组合单元包括均呈环状的上型模和下型模,多个型模组合单元依次套设于成型腔内,相邻两个上型模和下型模之间形成原料填充区；压模部件包括设置于进料口正上方的上压具、设置于卸料口正下方的下压具、用于带动上压具从进料口进入和离开成型腔的上压驱动机构、用于带动下压具从卸料口进入和离开成型腔的下压驱动机构。实现了连续加料、连续推出制品的连续模压过程,提高加工的效率。(The invention discloses plastic continuous compression molding equipment and a processing method, wherein the plastic continuous compression molding equipment comprises: the die comprises a cavity part, a plurality of section die combined units and a die pressing part, wherein the cavity part comprises a cavity outer pipe and a cavity inner rod arranged in the cavity outer pipe, and an annular forming cavity which penetrates through the outer peripheral wall of the cavity inner rod and the inner peripheral wall of the cavity outer pipe up and down is formed; the section mould combination units comprise an upper section mould and a lower section mould which are annular, the section mould combination units are sequentially sleeved in the forming cavity, and a raw material filling area is formed between every two adjacent upper section moulds and lower section moulds; the pressing die component comprises an upper pressing tool arranged right above the feeding port, a lower pressing tool arranged right below the discharging port, an upper pressing driving mechanism used for driving the upper pressing tool to enter and leave the forming cavity from the feeding port, and a lower pressing driving mechanism used for driving the lower pressing tool to enter and leave the forming cavity from the discharging port. The continuous die pressing process of continuously feeding and continuously pushing out the products is realized, and the processing efficiency is improved.)

1. A plastic continuous compression molding equipment is characterized in that: it includes:

the die cavity component comprises a die cavity outer tube (100) which is vertically and fixedly arranged and a die cavity inner rod (200) which is vertically arranged in the die cavity outer tube (100), wherein the die cavity inner rod (200) is vertically arranged relative to the die cavity outer tube (100) in a moving mode, the outer peripheral wall of the die cavity inner rod (200) and the inner peripheral wall of the die cavity outer tube (100) form a forming cavity (300) which penetrates through the forming cavity from top to bottom and is annular, the upper opening of the forming cavity (300) is a feeding hole (310), and the lower opening of the forming cavity (300) is a discharging hole (320);

the number of the pattern die combination units is multiple, each pattern die combination unit comprises an upper pattern die (400) and a lower pattern die (500) which are annular, the upper pattern dies (400) and the lower pattern dies (500) on the pattern die combination units are sequentially sleeved in the forming cavity (300) from top to bottom, and a raw material filling area is formed between every two adjacent upper pattern dies (400) and every two adjacent lower pattern dies (500);

the die pressing component comprises an upper pressing tool (600) arranged right above a feed opening (310), a lower pressing tool (700) arranged right below a discharge opening (320), an upper pressing driving mechanism used for driving the upper pressing tool (600) to enter and leave the forming cavity (300) from the feed opening (310), and a lower pressing driving mechanism used for driving the lower pressing tool (700) to enter and leave the forming cavity (300) from the discharge opening (320).

2. The apparatus of claim 1, wherein:

the lower end of the upper pressing tool (600) is of a hollow tubular structure matched with the forming cavity (300).

3. The apparatus of claim 1, wherein:

the upper end of holding down tool (700) is boss shape structure, the top of holding down tool (700) is provided with bellying (710) of contradicting with the lower extreme of pole (200) in the die cavity, the external diameter of bellying (710) is the same with the external diameter of pole (200) in the die cavity, the coaxial setting of pole (200) in bellying (710) and the die cavity, the height that highly is greater than section mould assembled unit of bellying (710).

4. A continuous plastic molding apparatus as claimed in claim 3, wherein:

the overall height of the convex part (710) and the inner cavity rod (200) is less than or equal to the height of the outer cavity tube (100).

5. The apparatus of claim 1, wherein:

the inner rod (200) of the cavity is a single integrally formed rod piece or a plurality of combined rod pieces which are sequentially arranged from top to bottom.

6. The apparatus of claim 1, wherein:

the die cavity outer tube (100) is including being heating section and the cooling zone that sets gradually from top to bottom, the outside of heating section is provided with heating device (110), heating device (110) be used for right shaping chamber (300) in the heating section heats.

7. The apparatus of claim 6, wherein:

and a cooling device (120) is arranged at the outer side of the cooling section, and the cooling device (120) is used for cooling a forming cavity (300) in the cooling section.

8. The apparatus of claim 1, wherein:

continuous compression molding equipment of plastic still includes frame (800), die cavity outer tube (100), upward press actuating mechanism and push down actuating mechanism fixed mounting on frame (800), upward press actuating mechanism including last hydro-cylinder (610) that is vertical setting, it is connected with last tamp (600) transmission to go up hydro-cylinder (610), push down actuating mechanism including lower hydro-cylinder (720) that are vertical setting, lower hydro-cylinder (720) with tamp (700) transmission is connected down.

9. The apparatus of claim 1, wherein:

the plastic continuous compression molding equipment further comprises a feeding device arranged beside the feeding port (310) and a discharging device arranged beside the discharging port (320).

10. A plastic continuous compression molding processing method is characterized in that: the plastic continuous compression molding equipment as claimed in any one of claims 1 to 9 is adopted, and the specific processing steps are as follows:

step 1: setting an initial state that a plurality of section die combination units are arranged in a forming cavity (300) from top to bottom, wherein a raw material filling area between two adjacent upper section dies (400) and a lower section die (500) is filled with plastic raw materials, a lower pressing driving mechanism and an upper pressing driving mechanism respectively drive a lower pressing tool (700) and an upper pressing tool (600) to completely press the section die combination units in the forming cavity (300), and the plastic raw materials are pressed into products under the common pressurization of the lower pressing tool (700) and the upper pressing tool (600);

step 2: the downward pressing driving mechanism drives the downward pressing tool (700) to leave the molding cavity (300) from the discharge opening (320), the discharge position is emptied, the upward pressing driving mechanism drives the upward pressing tool (600) to continuously press downward until a die combination unit and a product at the bottommost part of the molding cavity (300) are pushed downward out of the discharge opening (320) and taken away, and an upper die (400) and a lower die (500) of the die combination unit are used for standby;

and step 3: the downward pressing driving mechanism drives a downward pressing tool (700) to enter the forming cavity (300) from the discharge opening (320) and then close the discharge opening (320);

and 4, step 4: the upper pressing driving mechanism drives the upper pressing tool (600) to leave the forming cavity (300) from the feeding hole (310), and a filling space is vacated;

and 5: sequentially adding the lower die (500) to be used, a certain amount of plastic material and the upper die (400) to be used into the molding cavity (300) from the feed inlet (310);

step 6: the upper pressing tool (600) enters the forming cavity (300) from the feeding hole (310), the forming cavity (300) is pressurized downwards, the lower pressing tool (700) continues to pressurize upwards, and the lower pressing tool (700) and the upper pressing tool (600) pressurize the multiple die combination units together again;

and 7: and (4) repeating the steps 1-6 to complete the continuous die pressing process of continuously feeding and continuously pushing out the product.

Technical Field

The invention relates to the field of compression molding equipment, in particular to plastic continuous compression molding equipment and a processing method.

Background

Compression molding is one of the oldest plastic molding processes, in which a plastic material is placed in a mold, the material is made to flow under the action of pressure and heat to fill the cavity, so as to form a product similar to the shape of the cavity mold, and then the product is removed by cooling and demolding, which is generally called a compression molding process. With the advent of various molding processes such as injection molding, extrusion molding, blow molding and the like, there have been many methods for plastic molding, but compression molding still occupies a place due to the advantages of simple equipment and mold, compact product and stable size, and particularly compression molding of rubber and fluororesin materials with poor flowability is still the mainstream molding process.

The compression molding process includes cold molding and hot molding, wherein the cold molding is a molding process of adding materials into a mold cavity, compressing the materials into a compact product under pressure, and sintering and melting the compact product at high temperature, and is commonly used for producing polytetrafluoroethylene products. Hot molding generally uses two presses simultaneously, one for cold pressing and one for hot pressing, a mold with a material added is placed on one press, the material is melted under the action of pressure and heat, then the mold with the melted material is rapidly moved to the other press, the material is cooled under the pressure, and then the product is taken out after demolding, and the hot molding is usually used for producing a melt-processable fluororesin molded product. The traditional mould pressing equipment is long in forming period, low in production efficiency and high in labor intensity, and batch automatic production is difficult to realize.

Disclosure of Invention

The present invention is directed to a plastic continuous molding apparatus and a method for processing the same, which solves one or more of the problems of the prior art and provides at least one of the advantages of the apparatus and the method.

The technical scheme adopted for solving the technical problems is as follows:

the invention provides a plastic continuous compression molding equipment, which comprises: the die cavity component comprises a die cavity outer pipe and a die cavity inner rod, wherein the die cavity outer pipe is vertically and fixedly arranged, the die cavity inner rod is vertically arranged in the die cavity outer pipe, the die cavity inner rod is vertically arranged relative to the die cavity outer pipe in an up-and-down moving mode, an annular forming cavity which penetrates through the outer peripheral wall of the die cavity inner rod and the inner peripheral wall of the die cavity outer pipe is formed, the upper opening of the forming cavity is a feeding hole, and the lower opening of the forming cavity is a discharging hole; the section mould combination units comprise upper section moulds and lower section moulds which are annular, the upper section moulds and the lower section moulds on the section mould combination units are sequentially sleeved in the forming cavity from top to bottom, and a raw material filling area is formed between every two adjacent upper section moulds and every two adjacent lower section moulds; the die component comprises an upper pressing tool arranged right above the feed port, a lower pressing tool arranged right below the discharge port, an upper pressing driving mechanism used for driving the upper pressing tool to enter and leave the forming cavity from the feed port, and a lower pressing driving mechanism used for driving the lower pressing tool to enter and leave the forming cavity from the discharge port.

The invention has the beneficial effects that:

when in use, the pushing driving mechanism drives the pushing tool to enter the forming cavity from the discharge opening to close the discharge opening, then a lower section mould, a certain amount of plastic raw material and an upper section mould to be used are sequentially added into the forming cavity from the feeding hole, namely completing the loading of a mould combination unit, repeatedly adding a plurality of mould combination units into the forming cavity in sequence, the upper section mould and the lower section mould limit the inner bar of the cavity together, the raw material filling area formed between two adjacent upper section moulds and lower section moulds is the area for filling the plastic raw material, then the upper pressing driving mechanism drives the upper pressing tool to enter the molding cavity from the feeding hole, the molding cavity is pressurized, then the pressing driving mechanism drives the lower pressing tool to press upwards, and the plastic raw material is pressed into a product under the common pressurization of the lower pressing tool and the upper pressing tool, so that the upper and lower pressurization is realized, and the quality of the product is improved.

After the pressing is finished, the lower pressing tool leaves the forming cavity from the discharging opening, the discharging position is emptied, the upper pressing tool continues to press downwards until a section die combination unit and a product at the bottommost part in the forming cavity are pushed downwards out of the discharging opening and taken away, an upper section die and a lower section die of the section die combination unit are separated, the product is taken out, and the upper section die and the lower section die are used for standby; the lower pressing tool enters the forming cavity from the discharge opening and then closes the discharge opening, the upper pressing driving mechanism drives the upper pressing tool to leave the forming cavity from the feed opening, a filling space is vacated, the lower die to be used, the plastic raw material and the upper die to be used are sequentially added into the forming cavity from the feed opening, then the upper pressing tool enters the forming cavity from the feed opening, the forming cavity is pressurized downwards, the lower pressing tool continues to pressurize upwards, the lower pressing tool and the upper pressing tool pressurize the multiple die combination units together again, and the upper processing operation is repeated, so that the continuous die pressing process of continuously feeding and continuously pushing out products is realized, the requirement of the die pressing process on batch continuous production can be met, and the processing efficiency is improved.

The plastic continuous compression molding equipment is mainly used for annular plastic products.

As a further improvement of the technical scheme, the lower end of the upper pressing tool is of a hollow tubular structure matched with the forming cavity.

When last holding down tool pressurizes the shaping chamber, the lower extreme and the upper die of the uppermost end of mainly passing through last holding down tool are contradicted, and the upper die is cyclic annularly, and the lower extreme of going up the holding down tool is hollow tubular structure for the conflict top surface between last holding down tool and the upper die is the annular, and the atress is more even, makes the effort that goes up the holding down tool and exert pressure more even, avoids the section die to appear the slope when being pressurized, and leads to the finished product quality reduction of plastic goods.

As a further improvement of the above technical scheme, the upper end of the lower pressing tool is of a boss-shaped structure, the top of the lower pressing tool is provided with a protruding part which is abutted against the lower end of the rod in the cavity, the outer diameter of the protruding part is the same as that of the rod in the cavity, the protruding part and the rod in the cavity are coaxially arranged, and the height of the protruding part is greater than that of the section die combination unit. The first bulge is used for bearing the inner rod of the cavity, the second bulge is convenient to feed, when the bottommost section mould combined unit of the cavity is taken out, the upper end of the inner rod of the cavity can be lowered, the lower section mould for use is difficult to accurately add into the forming cavity from the feed inlet, the phenomenon of jamming can occur due to easy inclination, or the upper end of the inner rod of the cavity is level with the topmost section mould combined unit, at the moment, when the upper section mould and the lower section mould are placed in, a raw material filling area can not be formed, a plastic raw material can be extruded when the pressure is applied, and a defective product is formed. When a pattern die combination unit and a product at the bottommost part in a forming cavity are pushed out downwards and a lower pressing tool enters the forming cavity upwards, the in-cavity rod is pushed upwards at first, the in-cavity rod is pushed to move upwards relative to the pattern die combination unit in the forming cavity, the height of the upward movement of the in-cavity rod is equal to the height of the protruding part, the height of the protruding part is larger than that of the pattern die combination unit, the in-cavity rod can be separated from the pattern die combination unit at the bottommost part, the pattern die combination unit is conveniently pushed out and taken away in the next forming period, and therefore the height of the protruding part is emphasized to be larger than that of the pattern die combination unit.

As a further improvement of the technical scheme, the overall height of the bulge and the inner rod of the cavity is less than or equal to the height of the outer pipe of the cavity.

And this scheme can prevent that the upper end of pole from stretching out from the feed inlet in the die cavity, and this mainly makes things convenient for putting into of cope match-die and lower section mould, and when putting into the section mould, the upper end of pole is in the state of keeping level with the feed inlet in the die cavity, and perhaps the upper end of pole sets up in the feed inlet in the die cavity at this moment, and workman or other auxiliary feed mechanism can push away cope match-die and lower section mould sideslip to the feed inlet, and such material loading mode is swift light.

As a further improvement of the above technical solution, the rod in the cavity is a single integrally formed rod or a plurality of combined rods sequentially arranged up and down.

The inner rod of the cavity is a single rod piece which is integrally formed, and is better in structural strength, and the inner rod of the cavity is a plurality of combined rod pieces, so that the inner rod can be matched with a plurality of section mould combined units one by one for use, the length of each combined rod piece is set according to the thickness of a product, the combined rod pieces and the section mould combined units are taken out together during discharging, and the combined rod pieces and the section mould combined units are put together during feeding.

As a further improvement of the technical scheme, the cavity outer tube comprises a heating section and a cooling section which are sequentially arranged from top to bottom, a heating device is arranged on the outer side of the heating section, and the heating device is used for heating the forming cavity in the heating section. When the section mould combination unit passes through the heating section, the heating device realizes the melting of plastic materials or the high-temperature vulcanization of rubber materials, and when the section mould combination unit passes through the cooling section, the plastic products in the molding cavity can be cooled.

As a further improvement of the above technical solution, a cooling device is provided outside the cooling section, and the cooling device is used for cooling the molding cavity in the cooling section.

The scheme carries out active cooling through the cooling device, and a natural cooling mode can be adopted in other schemes.

As a further improvement of the technical scheme, the plastic continuous compression molding equipment further comprises a frame, the cavity outer tube, the upper pressing driving mechanism and the lower pressing driving mechanism are fixedly installed on the frame, the upper pressing driving mechanism comprises an upper oil cylinder which is vertically arranged, the upper oil cylinder is in transmission connection with an upper pressing tool, the lower pressing driving mechanism comprises a lower oil cylinder which is vertically arranged, and the lower oil cylinder is in transmission connection with the lower pressing tool.

This scheme drives respectively through last hydro-cylinder and lower hydro-cylinder and goes up the tamp and press the membrane with lower tamp, and wherein the supporting hydraulic system of well hydro-cylinder and lower hydro-cylinder uses with control system.

As a further improvement of the technical scheme, the plastic continuous compression molding equipment further comprises a feeding device arranged beside the feeding hole and a discharging device arranged beside the discharging hole. Automatic continuous production can be realized through the feeding device and the discharging device.

In addition, the invention provides a plastic continuous compression molding processing method, which adopts the plastic continuous compression molding equipment and comprises the following specific processing steps:

step 1: setting an initial state that a plurality of section mould combined units are arranged in a forming cavity from top to bottom, wherein a raw material filling area between two adjacent upper section moulds and two adjacent lower section moulds is filled with plastic raw materials, a lower pressing driving mechanism and an upper pressing driving mechanism respectively drive a lower pressing tool and an upper pressing tool to press the section mould combined units in the forming cavity, and the plastic raw materials are pressed into products under the common pressurization of the lower pressing tool and the upper pressing tool;

step 2: the lower pressing driving mechanism drives the lower pressing tool to leave the forming cavity from the discharging opening, the discharging position is emptied, the upper pressing driving mechanism drives the upper pressing tool to continue pressing downwards until a section die combination unit and a product at the bottommost part of the forming cavity are pushed downwards out of the discharging opening and taken away, and an upper section die and a lower section die of the section die combination unit are used for standby application;

and step 3: the lower pressing driving mechanism drives a lower pressing tool to enter the forming cavity from the discharge opening and then seal the discharge opening;

and 4, step 4: the upper pressing driving mechanism drives the upper pressing tool to leave the forming cavity from the feeding hole, and a filling space is vacated;

and 5: sequentially adding the lower die to be used, a certain amount of plastic raw materials and the upper die to be used into a forming cavity from a feeding hole;

step 6: the upper pressing tool enters the forming cavity from the feeding hole, the forming cavity is pressurized downwards, the lower pressing tool continues to pressurize upwards, and the lower pressing tool and the upper pressing tool pressurize the multiple die combination units together again;

and 7: and (4) repeating the steps 1-6 to complete the continuous die pressing process of continuously feeding and continuously pushing out the product.

Drawings

The invention is further described with reference to the accompanying drawings and examples;

FIG. 1 is a schematic structural view of an embodiment of a continuous plastic molding apparatus according to the present invention;

fig. 2 is a schematic structural diagram of an embodiment of a mold assembly unit provided by the present invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 2, the plastic continuous molding apparatus of the present invention comprises the following embodiments:

the plastic continuous compression molding apparatus of the present embodiment includes a cavity part, a plurality of mold assembly units, a die part, and a frame 800.

Wherein the die cavity part is including being vertical fixed setting in the die cavity outer tube 100 on frame 800, being vertical setting in the die cavity interior pole 200 of die cavity outer tube 100, interior pole 200 of die cavity is relative die cavity outer tube 100 reciprocates the setting, the periphery wall of interior pole 200 of die cavity and the interior peripheral wall of die cavity outer tube 100 form and run through from top to bottom and be annular shaping chamber 300, the upper shed of shaping chamber 300 is feed inlet 310, the lower shed of shaping chamber 300 is discharge opening 320, and the cross section of the die cavity outer tube 100 of this embodiment and die cavity interior pole 200 all is circularly, can be other shapes in other embodiments.

The section die combination units include an upper section die 400 and a lower section die 500 which are both annular, the upper section die 400 and the lower section die 500 on the plurality of section die combination units are sequentially sleeved in the forming cavity 300 from top to bottom, a raw material filling area is formed between every two adjacent upper section die 400 and lower section die 500, wherein the outer diameters of the upper section die 400 and the lower section die 500 are matched with the inner diameter of the cavity outer tube 100, the inner diameters of the upper section die 400 and the lower section die 500 are matched with the outer diameter of the cavity inner rod 200, the raw material filling area in the embodiment is formed between every two adjacent upper section die 400, lower section die 500, the outer peripheral wall of the cavity inner rod 200 and the inner peripheral wall of the cavity outer tube 100, in other embodiments, products according to special shapes and sizes may not contact the cavity outer tube 100 and the cavity inner rod 200, that is, the products are completely wrapped by the upper section die 400 and the lower section die 500.

When the mould is used, a lower mould 500 to be used, a certain amount of plastic material and an upper mould 400 are sequentially added into the forming cavity 300 from the feeding hole 310, so that the loading of a mould combination unit is completed, a plurality of mould combination units are repeatedly added into the forming cavity 300 in sequence, the upper mould 400 and the lower mould 500 limit the inner rod 200 of the cavity together, and a material filling area formed between two adjacent upper moulds 400 and 500 is an area for filling the plastic material.

The die assembly of the present embodiment includes an upper press 600 disposed right above the feed inlet 310, a lower press 700 disposed right below the discharge outlet 320, an upper press driving mechanism for driving the upper press 600 to enter and exit the forming chamber 300 from the feed inlet 310, and a lower press driving mechanism for driving the lower press 700 to enter and exit the forming chamber 300 from the discharge outlet 320, specifically: go up to press actuating mechanism including the last hydro-cylinder 610 that is vertical setting, go up hydro-cylinder 610 and last tamp 600 transmission connection, press actuating mechanism down including the lower hydro-cylinder 720 that is vertical setting, lower hydro-cylinder 720 with the tamp 700 transmission is connected down, and this embodiment drives tamp 600 and the tamp 700 carries out the press mold down respectively through last hydro-cylinder 610 and lower hydro-cylinder 720, and wherein goes up the supporting hydraulic system of hydro-cylinder 610 and lower hydro-cylinder 720 and control system uses.

The plastic raw material is pressed into a product under the common pressurization of the lower pressing tool 700 and the upper pressing tool 600, so that the up-down pressurization is realized, and the product quality is improved.

Further, when the upper pressing tool 600 pressurizes the molding cavity 300, the lower end of the upper pressing tool 600 is mainly abutted against the upper die 400 at the uppermost end, and the upper die 400 is annular, so that the stress is more uniform, the lower end of the upper pressing tool 600 is of a hollow tubular structure matched with the molding cavity 300, the abutting top surface between the upper pressing tool 600 and the upper die 400 is annular, the acting force for pressing the upper pressing tool 600 downwards is more uniform, and the phenomenon that the finished product quality of the plastic product is reduced due to the fact that the die is inclined when being pressurized is avoided.

The upper end of the lower pressing tool 700 is of a boss-shaped structure, the top of the lower pressing tool 700 is provided with a protruding portion 710 abutting against the lower end of the in-cavity rod 200, the outer diameter of the protruding portion 710 is the same as that of the in-cavity rod 200, the protruding portion 710 and the in-cavity rod 200 are coaxially arranged, and the height of the protruding portion 710 is greater than that of the section die combination unit. The first bulge 710 is used for supporting the rod 200 in the cavity, and the second bulge is convenient for feeding, when the die assembly unit at the bottommost part of the cavity 300 is taken out, the upper end of the rod 200 in the cavity can descend, the lower die 500 for standby is difficult to accurately add into the forming cavity 300 from the feed inlet 310, the rod 200 is easy to incline and the jamming phenomenon occurs, or the upper end of the rod 200 in the cavity is flush with the die assembly unit at the topmost part, at this time, when the upper die 400 and the lower die 500 are put in, a raw material filling area can not be formed, plastic raw materials can be extruded when being pressed, and defective products are formed. When a die combination unit and a product at the bottommost part in the die cavity 300 are pushed out downwards, and the lower pressing tool 700 enters the die cavity 300 upwards, the inner cavity rod 200 is pushed upwards at first, the inner cavity rod 200 is pushed to move upwards relative to the die combination unit in the die cavity 300, the height of the upward movement of the inner cavity rod 200 is equal to the height of the protrusion 710, and the height of the protrusion 710 is greater than that of the die combination unit, so that the inner cavity rod 200 can leave the die combination unit at the bottommost part, the die combination unit is convenient to push out and take away in the next molding cycle, and therefore the height of the protrusion 710 is greater than that of the die combination unit.

And the height of the whole of the protruding part 710 and the inner cavity bar 200 is less than or equal to the height of the outer cavity tube 100, so that the upper end of the inner cavity bar 200 can be prevented from extending out of the feed port 310, which is mainly convenient for the upper section die 400 and the lower section die 500 to be put in, when the section die is put in, the upper end of the inner cavity bar 200 and the feed port 310 are in a flat state, or the upper end of the inner cavity bar 200 is arranged in the feed port 310, at this time, a worker or other auxiliary feeding mechanisms can transversely move the upper section die 400 and the lower section die 500 to the feed port 310, and the feeding method is quick and convenient.

Furthermore, the in-cavity rod 200 is a single integrally-formed rod or a plurality of combined rods sequentially arranged from top to bottom, the in-cavity rod 200 is a single integrally-formed rod and is better in structural strength, the in-cavity rod 200 is a plurality of combined rods, so that the in-cavity rod can be matched with a plurality of section die combined units one by one, the length of each combined rod is set according to the thickness of a product, the combined rods and the section die combined units are taken out together during discharging, and the combined rods and the section die combined units are put together during feeding.

The cavity outer tube 100 of this embodiment is including being heating section and the cooling zone that sets gradually from top to bottom, the outside of heating section is provided with heating device 110, heating device 110 is used for right the shaping chamber 300 in the heating section heats. When the combined unit of the forming die passes through the heating section, the heating device 110 realizes the melting of the plastic material or the high-temperature vulcanization of the rubber material, and when the combined unit of the forming die passes through the cooling section, the plastic product in the forming cavity 300 can be cooled.

Wherein, a cooling device 120 is arranged outside the cooling section, the cooling device 120 is used for cooling the molding cavity 300 in the cooling section, and in other schemes, a natural cooling mode can be adopted.

The cooling device 120 may employ a cooling fan, and the heating device 110 may employ a heating plate.

In order to realize automatic continuous production, the plastic continuous compression molding equipment further comprises a feeding device arranged beside the feeding port 310 and a discharging device arranged beside the discharging port 320.

The control system, the hydraulic system, the feeding device and the discharging device can adopt the public known technology, and the patent does not describe.

In addition, the present embodiment further provides a plastic continuous compression molding processing method, which adopts the above plastic continuous compression molding equipment, and the specific processing steps are as follows:

step 1: setting an initial state that a plurality of section die combination units are arranged in the molding cavity 300 from top to bottom, wherein a raw material filling area between two adjacent upper section dies 400 and 500 is filled with plastic raw materials, the lower pressing driving mechanism and the upper pressing driving mechanism respectively drive the lower pressing tool 700 and the upper pressing tool 600 to completely press the section die combination units in the molding cavity 300, and the plastic raw materials are pressed into products under the common pressure of the lower pressing tool 700 and the upper pressing tool 600;

step 2: the downward pressing driving mechanism drives the downward pressing tool 700 to leave the molding cavity 300 from the discharge opening 320, the discharge position is emptied, the upward pressing driving mechanism drives the upward pressing tool 600 to continue to press downward until a die combination unit and a product at the bottommost of the molding cavity 300 are pushed downward out of the discharge opening 320 and taken away, and an upper die 400 and a lower die 500 of the die combination unit are used for standby;

and step 3: the downward pressing driving mechanism drives the downward pressing tool 700 to enter the forming cavity 300 from the discharge opening 320 and then close the discharge opening 320;

and 4, step 4: the upper pressing driving mechanism drives the upper pressing tool 600 to leave the forming cavity 300 from the feeding hole 310, and a filling space is vacated;

and 5: sequentially adding the lower mold 500 to be used, a certain amount of plastic material and the upper mold 400 to be used into the molding cavity 300 from the feed inlet 310;

step 6: the upper pressing tool 600 enters the molding cavity 300 from the feed inlet 310, the molding cavity 300 is pressurized downwards, and the lower pressing tool 700 continues to pressurize upwards, and the lower pressing tool 700 and the upper pressing tool 600 jointly pressurize the multiple die assembly units again;

and 7: and (4) repeating the steps 1-6 to complete the continuous die pressing process of continuously feeding and continuously pushing out the product.

The technology realizes the continuous die pressing process of continuously feeding and continuously pushing out the products, thereby meeting the requirement of batch and continuous production of the die pressing process and improving the processing efficiency.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.