CN110667067A - A solid bar extrusion equipment production line - Google Patents

Abstract

The invention discloses a production line of solid bar extrusion equipment, which comprises a vacuum feeding machine, wherein a discharge hole at the lower end of the vacuum feeding machine is communicated with a drying machine, the drying machine conveys dried raw materials to a feed hole of the extruding machine through a single-screw feeding machine, the extruding machine extrudes the plasticized raw materials into a cooling and shaping die, solid bars discharged from the cooling and shaping die are conveyed to a cutting machine through a six-roller traction device, and the solid bar products cut by the cutting machine are stacked on a stacking platform. Compared with the prior art, the method has the advantages that: in the aspect of the structural design of the mold runner, a branch pipe type mold runner structure is adopted, so that the thrust of the mold runner is larger, the runner is shunted more uniformly and is pushed out more easily, in the aspect of mold heating, the traditional heating ring electric heating mode is changed into the heating mode of mold temperature machine oil, the oil heating reduces the unstable influence of the heating ring electric heating mode on the mold discharging, the mold discharging is more uniform and more stable, and the production efficiency is improved.

Description

A solid bar extrusion equipment production line

technical field

The invention relates to the technical field of AFJ50-PPS/PEEK cold-top method solid bars, in particular to a solid bar extrusion equipment production line.

Background technique

At present, the market share data of polymer plastic cold top method PPS (polyphenylene sulfide)/PEEK (polyether ether ketone) solid bars in my country can be seen that imported solid bars account for the vast majority of the market. However, the market proportion of PPS/PEEK solid bars produced by the assembly cold-top method PPS/PEEK solid bar production line in China is very small. There are also several domestic companies producing PPS/PEEK solid bars, but the equipment is purchased abroad. The main reason is that the raw material characteristics of PPS/PEEK are special, and the technical level of my country's production of PPS/PEEK solid bars lags behind that determined by foreign countries. PPS/PEEK is a polymer material, and the shrinkage rate of the polymer material after forming is only 3/1000, so it encounters great problems in the cooling molding extrusion of the product, resulting in low production capacity, low qualification rate and market share. The proportion is small. However, with my country's economic development, the market demand for polymer solid bars is also increasing (the demand is mainly used in high-tech fields such as aviation, medical treatment, engineering, etc.), and the domestic production capacity is far from meeting the market demand. Therefore, at present only rely on imports to meet domestic needs.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the above technical difficulties and provide a screw feeder with smoother feeding, more precise and stable extrusion volume, greater thrust of the mold flow channel, more uniform flow channel distribution, and easier ejection of the mold. A solid bar extrusion equipment production line with more uniform output, more stable production efficiency and higher production efficiency.

In order to solve the above-mentioned technical problems, the technical solution provided by the present invention is: a solid bar extrusion equipment production line, including a vacuum feeder, the discharge port at the lower end of the vacuum feeder is connected to a dryer, and the dryer passes through a single unit. The screw feeder transports the dried raw materials to the feeding port of the extruder, and the extruder extrudes the plasticized raw materials into the cooling and shaping die, and the solid rods from the cooling and shaping die are passed through six The roller traction device is transported to the cutting machine, and the solid bar products after cutting by the cutting machine are stacked on the stacking platform. The vacuum feeder, dryer, single screw feeder, extruder, cooling and shaping die, six Both the traction device and the cutting machine are electrically connected to the electrical control part, and the electrical control part is electrically connected to the power source.

As an improvement, a vacuum tube is connected to the feeding port of the vacuum feeder, and the dryer includes a hopper arranged inside. The function of heating and drying raw materials, because the raw materials must be dried and dehumidified before being used to produce products. If the raw materials are not dried and used to produce products, the produced products will have the undesirable phenomenon of air bubbles.

As an improvement, the diameter of the feeding port of the extruder is 50 mm, the extruder includes a barrel screw arranged inside, and the extruder heats, compresses and plasticizes the dried raw material through the barrel screw.

As an improvement, the cooling and sizing die includes a sizing die arranged inside, and the cooling and sizing die is used to shape the size of the solid rod through the sizing die.

As an improvement, the six-roller pulling device pulls the solid rod to move at a constant speed and stability, and can reduce the resistance inside the mold.

The advantages of the present invention compared with the prior art are: the feeding method at the feeding port of the barrel and screw of the present invention adopts the feeding method of adding a feeder, the feeding screw adopts double threads, and the single screw feeds the material. The electric control is equipped with a frequency conversion speed control controller, which makes the screw feeding and feeding smoother, and the extrusion volume is more accurate and stable; it solves the problem that the traditional hopper is easy to “bridge” and unstable . In the design of the mold runner structure, the branch-type mold runner structure is adopted, which makes the mold runner thrust larger, the runner shunting more uniform, and easier to push out. In terms of mold heating, the traditional heating coil electric heating method is also changed. The mold temperature is heated in the form of oil heating, and the oil heating reduces the influence of the fluctuation of the electric heating mode of the heating ring on the instability of the mold discharge, so that the mold discharge is more uniform and stable, and the production efficiency is improved.

Description of drawings

Fig. 1 is a structural schematic diagram of a solid rod extrusion equipment production line of the present invention.

As shown in the picture: 1. Vacuum feeder, 2. Dryer, 3. Dryer, 4. Extruder, 5. Cooling and shaping die, 6. Six-roller traction device, 7. Cutting machine, 8. Stacking platform , 9, the electrical control part, 10, the vacuum tube.

Detailed ways

In the description of the present invention, it should be understood that the terms "center", "lateral", "top", "bottom", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

The present invention will be further described in detail below in conjunction with the accompanying drawings.

A solid bar extrusion equipment production line, comprising a vacuum feeder 1, a discharge port at the lower end of the vacuum feeder 1 is connected to a dryer 2, and a vacuum tube 10 is connected to the feed port of the vacuum feeder 1. The dryer 2 includes a hopper arranged inside, the vacuum feeder 1 sucks plastic raw materials into the hopper of the dryer 2 through a vacuum tube 10, and the dryer 2 transports the dried raw materials through a single screw feeder 3 to the feeding port of the extruder 4, and quantitative conveying can be realized. The diameter of the feeding port of the extruder 4 is 50 mm. The extruder 4 includes a barrel screw arranged inside. The extruder 4. The dried raw material is heated, compressed and plasticized by the barrel screw, and the plasticized raw material is extruded by the extruder 4 into a cooling and shaping die 5, and the cooling and shaping die 5 includes a shaping die arranged inside, The cooling and sizing die 5 is used to shape the size of the solid bar, and the solid bar coming out of the cooling and sizing die 5 is transported to the cutting machine 7 through a six-roller pulling device 6. The six-roller pulling device 6 pulls at a constant speed and stably. The solid bar is moved, and the solid bar is cut to the required length. The solid bar product after being cut by the cutting machine 7 is stacked on the stacking platform 8. The vacuum feeder 1, the dryer 2, the single screw feeder The feeder 3, the extruder 4, the cooling and shaping die 5, the six-roller pulling device 6 and the cutting machine 7 are all electrically connected to the electrical control part 9, and play the role of controlling the mechanical movement and temperature control of the equipment throughout the day. The control part 9 is electrically connected to the power supply, and a PLC controller can be used for electrical control.

In the specific implementation of the present invention, the power supply is turned on, and the vacuum feeder 1 sucks the raw materials into the dryer 2 through the vacuum tube 10 in the form of vacuum suction; the dryer 2 dries the raw materials through the internal hot air circulation system for heating. To the set dryness, the raw material is quantitatively fed to the feed port of the extruder 4 by the single screw feeder 3 under the dryer 2, and then the extruder 4 heats, compresses and melts the raw material through the barrel screw. Plasticization, the melted and plasticized raw materials will be pushed into the mold cavity of the cooling and setting mold 5 under the action of the screw rotation and compression during the melting and plasticizing process of the raw materials, and the plasticized raw materials will be slowly cooled in the mold cavity and shaped into plastic The solid bar, while the solid bar is cooled and shaped, the extruder 4 screws are continuously feeding into the mold cavity, so a certain internal pressure is formed in the mold, and the solid rod cooled and shaped in the mold is in the mold. Under the action of pressure, it is pushed out to the die mouth. After the solid bar is pushed out through the die mouth, it directly enters the six-roller pulling device 6. Under the pulling action of the six-roller pulling device 6, the solid bar is pulled forward at a constant speed and stably, and is conveyed to the cutting machine 7. After the solid bar product enters the cutting machine 7, the solid bar product will be pushed forward under the traction action of the six-roller traction. After reaching the set length set by the cutting machine 7, the cutting machine will automatically cut off the solid bar in a reciprocating manner. For bar products, after the solid bar is cut, it will move to the stacking rack 8 to complete the entire production process of the solid bar product.

The difference between the innovative technology of the invention and structure of this equipment is that the new technical process fully analyzes the raw material characteristics of PPS (polyphenylene sulfide)/PEEK (polyether ether ketone): high temperature, easy bridging of materials, and plasticization process of screw feeding It is easy to return materials, the production process is unstable, and the connectivity is poor. In view of the characteristics of this raw material, the feeding method at the feeding port of the barrel and screw adopts the feeding method of installing the feeder. The feeding screw adopts the structure of double-thread and single-screw feeder; The frequency conversion speed control controller makes the screw feeding and feeding smoother, and the raw material plasticization process, the extrusion volume is more stable and accurate; it solves the problem that the traditional hopper is easy to "bridge" and unstable. In terms of mold runner structure design, the traditional cold top method mold runner structure is "straight pipe", while the traditional "straight pipe" mold runner structure is used in PPS (polyphenylene sulfide)/PEEK (polyether) (Ether ketone), after the raw material is melted, it is relatively pushed after cooling and shaping in the cavity of the mold flow channel, resulting in the inability to release the mold for connection production. The optimized mold runner structure of the present invention is "branch pipe type", the optimized mold runner has a larger thrust, the mold runner discharge distribution is more uniform, it is easy to demould after setting, and it is easier to push out. In terms of mold heating, the traditional electric heating method of the heating coil has also been changed to the form of mold temperature oil heating. The temperature control is more accurate, making the mold discharge more uniform and stable, and improving the qualification rate and production efficiency of the produced products.

The present invention and its embodiments have been described above, and the description is not restrictive, and what is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it, and without departing from the purpose of the present invention, any structural modes and embodiments similar to this technical solution are designed without creativity, all should belong to the protection scope of the present invention.

Claims (5)

1. The utility model provides a solid rod extrusion equipment production line, includes vacuum material loading machine (1), its characterized in that: vacuum material loading machine (1) lower extreme discharge gate intercommunication desiccator (2), desiccator (2) carry extruder (4) pan feeding mouth department through single screw rod feeding machine (3) with the raw materials that dry, extruder (4) extrude the raw materials that the plastify in cooling design mould (5), follow solid stick that cooling design mould (5) came out transports cutter (7) through six roller draw gear (6), stacks on stacking platform (8) through the solid stick product after cutter (7) is cut off and is handled, vacuum material loading machine (1), desiccator (2), single screw rod feeding machine (3), extruder (4), cooling design mould (5), six roller draw gear (6) and the equal electric connection electric control part (9) of cutter (7), electric control part (9) electric connection power.

2. The solid bar extrusion apparatus production line of claim 1, wherein: vacuum tube (10) are connected to vacuum material loading machine (1) pan feeding mouth department, desiccator (2) are including setting up in inside hopper, vacuum material loading machine (1) is inhaled the plastic raw materials in the hopper of desiccator (2) through vacuum tube (10).

3. The solid bar extrusion apparatus production line of claim 1, wherein: the diameter of a feeding port of the extruder (4) is 50mm, the extruder (4) comprises a machine barrel screw rod arranged inside, and the extruder (4) heats, compresses and plasticizes the dried raw materials through the machine barrel screw rod.

4. The solid bar extrusion apparatus production line of claim 1, wherein: the cooling and shaping mold (5) comprises a shaping mold arranged inside, and the cooling and shaping mold (5) shapes the size of the solid rod through the shaping mold.

5. The solid bar extrusion apparatus production line of claim 1, wherein: the six-roller traction device (6) stably pulls the solid rod to move at a constant speed.

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