CN86204313U

CN86204313U - Concave-convex die plastic vacuum forming machine with two functions

Info

Publication number: CN86204313U
Application number: CN 86204313
Authority: CN
Inventors: 梁嘉麟
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-06-21
Filing date: 1986-06-21
Publication date: 1987-03-18

Abstract

The utility model discloses a concave-convex die plastic vacuum forming machine with two functions, belonging to plastic machinery for forming large-sized plastic thin elements. The plastic machinery uses plastic boards as raw materials. The concave-convex die plastic vacuum forming machine with two functions improves the absolutely single structural function of the requirement of used die types of the existing blow molding forming machine. The concave-convex die plastic vacuum forming machine with two functions enables the existing blow molding forming machine to tend towards perfection, which is realized by a normally open valve device which is additionally arranged on the blow molding forming machine of convex dies. The utility model is indispensably special equipment for producing the linings of plastic doors and plastic inner containers in the industry of household refrigerators. The concave-convex die plastic vacuum forming machine with two functions is especially suitable for small plants whose production capacity of refrigerators is small.

Description

Concave-convex die plastic vacuum forming machine with two functions

The utility model belongs to the use plastic plate and makes raw material, is used for the plastics machinery that large-scale Plastic thin type spare is shaped.

Existing plastic uptake forming machine is not that the dedicated male die shaping is exactly that special-purpose die is shaped, and concavo-convex mould can not be general on a plastic uptake forming machine.With regard to domestic refrigerator, require outer surface bright and clean in its plastic door, outer surface can not contact mould during shaping, need to come plastic uptake to be shaped with punch, and its plastics inner bag requires inner surface bright and clean, and inner surface can not the contact mould during shaping, needs come plastic uptake to be shaped with die.It is in the unique production plastic door and the special equipment used of plastics inner bag that present most factory all adopts punch plastic uptake forming machine, and this is because the price of plastic uptake forming machine is higher, at least 20 ten thousand dollars in one cover of import at present; At least 8 ten thousand yuans in self-control one cover.

The utility model is a kind of improvement of using the problem on this definitely single structure function of mould-type requirement to carry out to existing plastic uptake forming machine, can be general on a plastic uptake forming machine at use male and female mold under the situation that cost increases hardly, more become perfect to the function that makes the plastic uptake forming machine.

The utility model is to realize like this, raw-gas balance pipe place sets up one and often opens on the body of punch plastic uptake forming machine, the valve gear that moment when using die to carry out the plastic uptake shaping can close thereupon, this valve gear of often opening can be the normal-open electromagnetic valve of switching on and promptly closing, and also can be made of a check valve at least.

Accompanying drawing 1 is housing construction and the operation principle schematic diagram when using the punch plastic uptake to be shaped among the utility model embodiment, wherein:

(1) is lead (breather pipe of holding concurrently); (2) be concrete foundation; (3) be that base plate, (4) are sealing asbestos paper; (5) be the degree of tightness subpress; (6) be pressing plate; (7) be the sealing frame; (8) be the die shoe plate; (9) be convex mold; (10) be the plastics inner bags; (11) be body; (12) be sealed ubber strip; (13) be normal-open electromagnetic valve; (14) be ring flange; (15) be soft air pipe; (16) be the big press of lifting.

Plastic plate is pressed on the sealing frame (7) by pressing plate (6), after plastic plate is heated deliquescing and is by sagging to suitable degree, remove the heater on its top, blow by soft air pipe (15) immediately, gas sprays by way of many spileholes of central duct on convex mold (9) of lead (1), hot flexible plastic sheet material is raised up, afterwards, die shoe plate (8) (can be an air pressure by the big press of lifting that is fixed on the base plate (3), also can be oil pressure) effect of (16) slowly holds up convex mold (9), up to position as shown in Figure 1, bleed by soft air pipe (15) with the bigger vacuum barrel of vacuum high volume immediately, the plastic uptake that carries out as shown in Figure 1 is shaped.Obviously, at this moment mainly by die shoe plate (8), sealing frame (7) and plastics inner bag (10) formed one far below an atmospheric low pressure obturator, form the primary condition of punch plastic uptake shaping.At last still by a little air blowing mould release of soft air pipe (15), fall convex mold (9) by the big press of lifting (16), allow the degree of tightness subpress (can be air pressure, also can be oil pressure) (5) loosen pressing plate (6), take off molded component plastics inner bag (10), the recessed surface of plastics inner bag (10) is owing to being close to die forming, so not bright and clean.In the above-mentioned all processes, normal-open electromagnetic valve (13) unlatching of always cutting off the power supply promotes body (11) internal and external pressure balance by gas flow.

Accompanying drawing 2 is housing construction and the operation principle schematic diagrames when using the die plastic uptake to be shaped among the utility model embodiment, wherein:

(1) is lead (breather pipe of holding concurrently); (2) be concrete foundation; (3) be base plate; (4) be sealing asbestos paper; (5) be the degree of tightness subpress; (6) be pressing plate; (8) be the die shoe plate; (10) be the plastics inner bags; (11) be body; (12) be sealed ubber strip; (13) be normal-open electromagnetic valve; (14) be flange; (15) be soft air pipe; (16) be the lifting press; (17) be negative mold.

Plastic plate is pressed on the upper ledge position of negative mold (17) by pressing plate (6), to seal frame (7) and remove this moment, when plastic plate heating deliquescing is by sagging to suitable degree, remove the heater on its top, bleed by flexible pipe (15) then, close normally open solenoid valve (13) simultaneously, the plastic uptake that carries out as shown in Figure 2 is shaped, obviously, at this moment mainly by body (11), base plate (3), the upper ledge position of negative mold (17), plastics inner bag (10) and buttoned-up normal-open electromagnetic valve (13) have formed one far below an atmospheric low pressure obturator, form the primary condition that die is shaped.Relief degree of tightness subpress (5) loosens pressing plate (6), by a little air blowing mould release of soft air pipe (15) and take out molded component inner bag (10), at this moment, because die forming is not close on the recessed surface of plastics inner bag (10), so very bright and clean.In the above-mentioned overall process, normal-open electromagnetic valve is just closed switching in a flash of plastic uptake shaping thereupon, and all the other times are all located the opening of cutting off the power supply, and promote the pressure balance that body (11) is inside and outside.

Claims

1, the dual-purpose plastic uptake forming machine of a kind of concavo-convex mould has punch plastic uptake forming machine, it is characterized in that going up raw-gas balance pipe place at the body (11) of punch plastic suction forming apparatus sets up one and often open, and is using die to carry out the valve gear that moment that plastic uptake is shaped closes thereupon.

2, according to the dual-purpose plastic uptake forming machine of the described a kind of concavo-convex mould of claim 1, it is characterized in that the described valve gear that this is often opened can be the normal-open electromagnetic valve (13) of switching on and promptly cutting out, also can be to be made of a check valve at least.