CN102672876B

CN102672876B - Polyvinyl chloride (PVC) molding machine and molding mould

Info

Publication number: CN102672876B
Application number: CN201210169620.9A
Authority: CN
Inventors: 谢家洪
Original assignee: DONGGUAN LIXIN MACHINERY CO LTD
Current assignee: The Guangdong prosperous intelligent Science and Technology Ltd. of profit
Priority date: 2012-05-29
Filing date: 2012-05-29
Publication date: 2015-07-15
Anticipated expiration: 2032-05-29
Also published as: CN102672876A

Abstract

The invention provides a polyvinyl chloride (PVC) molding machine which comprises a liquid material hopper, a feeding screw, a temperature controllable barrel, a first push plate and a heating plate and a cooling plate in a temperature control channel. An anti-leakage injection port is arranged at the tail end of the temperature controller barrel. The anti-leakage injection port comprises an anti-leakage screw sleeve tip and an anti-leakage sleeve sleeved at one end of an opening at the anti-leakage screw sleeve tip, an anti-leakage bead and an anti-leakage spring are arranged between the anti-leakage screw sleeve tip and the anti-leakage sleeve. A molding mould is further provided. The molding mould comprises a mould panel and a mould base plate, the anti-leakage injection port at the tail end of the temperature controllable barrel corresponds to a punching hole of the mould base plate, the mould base plate is provided with a drainage channel communicated with the punching hole, and a space between the mould panel and the mould base plate is communicated with the tail end of the drainage channel. The PVC molding machine can work under low pressure, and therefore, a copper mould or an aluminum mould can be produced in use. The PVC molding machine reduces energy consumption and cost, the mould matched with the anti-leakage injection port is used, the drainage channel and molding layer are separated, location of materials is facilitated, and corrosion of base color caused by injection pressure of the barrel is reduced.

Description

PVC forming machine and mould thereof

Technical field

The invention belongs to the shaping making field of trade mark, the trade mark being specifically related to a kind of PVC makes forming machine and mould.

Background technology

The making of existing various traditional trade mark be utilize solid-state powder or the solid state such as granular to carry out the PVC material after mixing granulator height injects by pressure, high-voltage lock mould.And add man-hour at goods, during due to granular PVC material granulation, need to add for solving slip demand the auxiliary agent rolling up mobility and slip, to improve color stability and the secondary workability of goods, and need to use punching block, use high-pressure molding to manufacture, due to high-pressure injection during the injection of plasticizing material, goods easily occur that gas line, current mark, shrink concave point, injection process leak the insoluble defects such as material, no matter from the viewpoint of energy resource consumption, mould development expense etc., its cost payout is all very large.

Summary of the invention

The technical problem to be solved in the present invention is to provide the forming machine that a kind of adaptation is shaping based on liquid material, can make PVC at environment under low pressure, redesigns and is different from the mould needing the shaping machine structure corresponding to granulation and adapt with it.

PVC forming machine of the present invention, comprise the heating plate in liquid hopper, feed worm, controllable temperature gun barrel, the first push pedal, temperature control passage and coldplate, controllable temperature gun barrel end is leakproof injection port, described leakproof injection port comprises leakproof screw sleeve point and is locked on the leak jacket of open at one end of leakproof screw sleeve point, comprise leakproof pearl and leakproof spring between leakproof screw sleeve point and leak jacket, leakproof pearl is closed in the opening part of leakproof screw sleeve point by leakproof spring and elasticity can prolongs opening direction and move or rotation.Described feed worm uses long pitch, and when screw diameter is 25mm, adjacent pitch distance is 24mm-30mm, optimum between 24mm-28mm.

Further, the first described push pedal can be positioned at the below of heating plate through the below of described controllable temperature gun barrel to the heating plate position in temperature control passage; Coldplate is arranged in the heating plate of temperature control passage on one side; Temperature control passage is other comprises second push pedal that can move to coldplate position from heating plate position; Be in temperature control passage coldplate outer and be parallel to the first push pedal place and also comprise the 3rd push pedal, the 3rd described push pedal vertically can be moved relative to the second push pedal by the coldplate lower position of temperature control passage.

Be 40 degree ~ 50 degree between the blanking tube of liquid hopper and feed worm, wherein optimum is 45 degree.

A kind of mould for above-mentioned PVC forming machine, comprise the mold panel and die bottom plate that can mutually close, the space of corresponding trade mark shape, size is provided with between the mold panel of closing and die bottom plate, the leakproof injection port of the end of described controllable temperature gun barrel is corresponding with the perforation size of die bottom plate, described die bottom plate is provided with and one or more sluice way communicated of boring a hole, and the space between mold panel and die bottom plate communicates with the end of sluice way.

The invention has the beneficial effects as follows: traditional approach needs under each specified temp and shaping ratio, to add various auxiliary agent successively to carry out the improvement of mobility and slip, owing to the present invention is based on liquid material and non-particulate design, the various factors such as the required mobility considered of granulation and slip can be ignored; According to liquidus behavior design leakproof injection port during injection injection moulding, can under low pressure carry out, thus can use cost die-off copper mold, aluminum dipping form produce, reduce energy consumption, cost payout, the mould of collaboration leakproof injection port, runner and shaping two separate, be conducive to the location of material, reduce the injection pressure of gun barrel to background color erosion, sharp outline between each color region of trade mark that order is produced, between surface layer and bottom, is rich in third dimension.

Accompanying drawing explanation

Fig. 1 is overall construction drawing front view of the present invention;

Fig. 2 is overall construction drawing side view of the present invention;

Fig. 3 is this overall construction drawing top view;

Fig. 4 is existing injector injection port structure;

Fig. 5 is the leakproof injection port structure that the present invention uses;

Fig. 6 is the structure of charging place between liquid hopper and feed worm;

Fig. 7 is the die bottom plate of the mould used, and this face is the die bottom plate one side of fitting with mold panel.

Detailed description of the invention

PVC forming machine of the present invention, as shown in Figure 1, comprise the heating plate 5 in liquid hopper 1, feed worm 2, controllable temperature gun barrel 3, first push pedal 4, temperature control passage and coldplate 6, controllable temperature gun barrel 3 end is leakproof injection port.Fig. 4 is existing injection port, different from traditional leakproof injection port, the present invention is based on the injection of liquid material as shown in Figure 5, comprise leakproof screw sleeve point 31 and be locked on the leak jacket 32 of open at one end of leakproof screw sleeve point, leakproof pearl 33 and leakproof spring 34 is comprised between leakproof screw sleeve point 31 and leak jacket 32, leakproof pearl 33 is inaccessible in the opening part of leakproof screw sleeve point by leakproof spring, due to the elasticity of spring, leakproof pearl 33 can prolong this opening direction and move or rotation, and liquid material moves or rotates with the leakproof pearl 33 of opening part and evenly extrude to injection port 35.Described feed worm uses long pitch, low spiral groove depth and low compression ratio, when material half is plastified, shearing force is larger, the plasticizing being simultaneously conducive to material is smooth and easy, avoid burning, be applicable to liquid PVC to the requirement of temperature, the optimum specification of the present embodiment is: when screw diameter is 25mm, adjacent pitch distance is 24mm-28mm, and pitch distance is still reasonable interval between 24mm-30mm.

Further, the first described push pedal 4 can be positioned at the below of heating plate 5 through the below of described controllable temperature gun barrel 3 to the heating plate position in temperature control passage; Coldplate 6 is arranged in the heating plate of temperature control passage on one side; Temperature control passage is other comprises second push pedal 7 that can move to coldplate position from heating plate position; Be in temperature control passage coldplate outer and be parallel to the first push pedal place and also comprise the 3rd push pedal 8, the 3rd described push pedal can by the coldplate lower position of temperature control passage relative to the second push pedal vertically movement.

For adapting to liquid feed, be 40 degree ~ 50 degree between the blanking tube of liquid hopper and feed worm 2, wherein optimum is 45 degree, as shown in Figure 6.

A kind of mould for above-mentioned PVC forming machine, comprise the mold panel and die bottom plate that can mutually close, the space of corresponding trade mark shape, size is provided with between the mold panel of closing and die bottom plate, the leakproof injection port 35 of the end of described controllable temperature gun barrel is corresponding with perforation 36 size of die bottom plate, with reference to Fig. 7, described die bottom plate is provided with and 36 one or more sluice ways 37 communicated of boring a hole, and the space 38 between mold panel and die bottom plate communicates with the end of sluice way.

Herein, mould is provided with the structure of applicable fluid design, closed die panel and die bottom plate, the space of trade mark shape to be formed is provided with between mold panel and die bottom plate, described die bottom plate place is provided with sluice way and connects the perforation of sluice way, liquid plasticizing bed material by the perforation 36 of die bottom plate via each sluice way water conservancy diversion bed material to the position of background color corresponding to trade mark, namely form the base surface area of trade mark.

Due to the granular PVC material of non-solid, thus can work under the environment of relatively low pressure, the mould of use, except can using general punching block, can also use that copper mold, aluminum dipping form etc. are multiple requires relatively low material manufacture, realizes same effect.

The above not imposes any restrictions technical scope of the present invention, all above embodiment is done according to the technology of the present invention essence any amendment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims

1. a PVC forming machine, comprise liquid hopper, feed worm, first push pedal, heating plate in temperature control passage and coldplate, it is characterized in that: also comprise controllable temperature gun barrel, controllable temperature gun barrel end is leakproof injection port, described leakproof injection port comprises leakproof screw sleeve point and is locked on the leak jacket of open at one end of leakproof screw sleeve point, leakproof pearl and leakproof spring is comprised between leakproof screw sleeve point and leak jacket, leakproof pearl by leakproof spring be closed in leakproof screw sleeve point opening part and can rotation, when described feed worm diameter is 25mm, adjacent pitch distance is 24mm-30mm.

2. PVC forming machine according to claim 1, is characterized in that: the first described push pedal can be positioned at the below of heating plate through the below of described controllable temperature gun barrel to the heating plate position in temperature control passage; Coldplate is arranged in the heating plate of temperature control passage on one side; Temperature control passage is other comprises second push pedal that can move to coldplate position from heating plate position; Be in temperature control passage coldplate outer and be parallel to the first push pedal place and also comprise the 3rd push pedal, the 3rd described push pedal vertically can be moved relative to the second push pedal through below the coldplate of temperature control passage.