CN102505710A

CN102505710A - Glass-reinforced plastic inspection well cover

Info

Publication number: CN102505710A
Application number: CN2011103573336A
Authority: CN
Inventors: 王崇高
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-13
Filing date: 2011-11-13
Publication date: 2012-06-20

Abstract

A glass-reinforced plastic inspection well cover is manufactured by a reinforcement cage and filling materials. A manufacturing method includes steps that 1, a casting mold of the glass-reinforced plastic inspection well cover is manufactured; 2, the reinforcement cage of the glass-reinforced plastic inspection well cover is manufactured; 3, the filling materials of the glass-reinforced plastic inspection well cover are manufactured; and 4, the glass-reinforced plastic inspection well cover is manufactured, the casting mold of the glass-reinforced plastic inspection well cover is mounted on a flat plate of a vulcanizing press, then the reinforcement cage is placed in the casting mold, an electric heating switch of the vulcanizing press is switched on to heat the casting mold to the temperature ranging from 80 DEG C to 85 DEG C, an electric heating switch of a double-screw extruder is switched on to raise the temperature of screws to 230 DEG C to 270 DEG C, the filling materials in the double-screw extruder are squeezed into the reinforcement cage in the casting mold on the vulcanizing press, and then the vulcanizing press is started to press, so that the glass-reinforced plastic inspection well cover is formed. The glass-reinforced plastic inspection well cover has the advantages that the glass-reinforced plastic inspection well cover is simple in structure, convenient in manufacture, low in production cost and fine in pressure resistance, and is made of waste plastics. In addition, the glass-reinforced plastic inspection well cover can be widely used as a sewer inspection well cover, a communication inspection well cover and a running water inspection well cover.

Description

Plastic-steel inspection shaft lid

Technical field

The invention belongs to technical field of plastic, relate to a kind of manufacturing approach of plastic-steel inspection shaft lid.

Background technology

At present, the inspection shaft on the market is stamped metal inspection shaft lid and plastic inspection well lid two big classes, and metal inspection shaft lid intensity is high, compressive property is good, and shortcoming is a Heavy Weight, stolen easily.And the advantage of plastic inspection well lid is in light weight, corrosion-resistant, the unmanned pilferage, and shortcoming is that withstand voltage properties is poor.In order to overcome the defective of metal inspection shaft lid and plastic inspection well lid, developing a kind of plastic-steel inspection shaft lid just has crucial meaning.

Summary of the invention

The manufacturing approach that the purpose of this invention is to provide a kind of plastic-steel inspection shaft lid.

In order to achieve the above object, a kind of plastic-steel inspection shaft lid of the present invention is made up of reinforcing cage and inserts, and reinforcing cage is rolled by reinforcing bar and is welded, and inserts is mixed by plastics feed back, kieselguhr and wood chip and abietic resin.The preparation method of plastic-steel inspection shaft lid is: the casting die (rectangle or circular die) of 1, making plastic-steel inspection shaft lid.2, make the reinforcing cage of plastic-steel inspection shaft lid: the reinforcing cage of plastic-steel inspection shaft lid is rolled by reinforcing bar and is welded.3, make the inserts of plastic-steel inspection shaft lid; The preparation method of inserts is that plastics feed back, kieselguhr and wood chip and the abietic resin of fragmentation are put into high-speed mixer, behind high-speed mixing 10～20min material is emitted and is sent in the loading hopper of double screw extruder.4, the making of plastic-steel inspection shaft lid: the casting die of plastic-steel inspection shaft lid is installed on the flat board of vulcanizing press; Then reinforcing cage is put into casting die; The electrical heating switch of opening vulcanizing press is heated to 80～85 ℃ with casting die; Open the electrical heating switch of double screw extruder; Extruder temperature is risen to 230～270 ℃, the inserts in the double screw extruder is got in the reinforcing cage of vulcanizing press top casting mould, open vulcanizing press then and suppress plastic-steel inspection shaft lid (pressure of control vulcanizing press is 40～60MPa).

The prescription of inserts is formed and percentage by weight is: plastics feed back 60～80%, kieselguhr 10～20%, wood chip 5～10%, abietic resin 5～10%.Diatomaceous specification is 400 orders～800 orders; The wood chip specification is 4～20 orders, dried again after the ammoniacal liquor ammonification is handled; The abietic resin specification is 60～80 orders.

The plastics feed back is: any one in the middle of PE feed back, PP feed back, the PA feed back.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of circular plastic-steel inspection shaft lid of the present invention;

Fig. 2 is the structural representation of rectangle plastic-steel inspection shaft lid;

Fig. 3 is a rectangle plastic-steel inspection shaft lid reinforcing cage structural representation;

Fig. 4 is circular plastic-steel inspection shaft lid reinforcing cage structural representation;

Among the figure: 1. reinforcing cage, 2. inserts

The specific embodiment of the present invention is:

1, makes the casting die (rectangle or cylindrical die) of plastic-steel inspection shaft lid.

2, make the reinforcing cage of plastic-steel inspection shaft lid: the reinforcing cage of plastic-steel inspection shaft lid is rolled by reinforcing bar and is welded.

3, make the inserts of plastic-steel inspection shaft lid; The preparation method of inserts is that plastics feed back, kieselguhr and wood chip and the abietic resin of fragmentation are put into high-speed mixer, behind high-speed mixing 10～20min material is emitted and put into the loading hopper of double screw extruder.

4, the making of plastic-steel inspection shaft lid: the casting die of plastic-steel inspection shaft lid is installed on the flat board of vulcanizing press; Then reinforcing cage is put into casting die; The electrical heating switch of opening vulcanizing press is heated to 80～85 ℃ with casting die, opens the electrical heating switch of double screw extruder, and extruder temperature is risen to 230～270 ℃; Inserts in the double screw extruder is got in the reinforcing cage of vulcanizing press top casting mould, opened vulcanizing press then and suppress plastic-steel inspection shaft lid.

The invention has the beneficial effects as follows; That the plastic-steel inspection shaft lid that this method is produced has is simple in structure, easily manufactured, utilized waste and scrap, cost of production is low, the advantage of good pressure-resistant performance; Plastic-steel inspection shaft lid can load-bearing 40 tons; Its weight capacity is considerably beyond common plastics inspection shaft lid, and this plastic-steel inspection shaft lid can be widely used in manhole cover, communication inspection shaft lid and tap water manhole cover.

Embodiment 1

1, makes the casting die of rectangle plastic-steel inspection shaft lid.

2, make the reinforcing cage of rectangle plastic-steel inspection shaft lid: the reinforcing cage of rectangle plastic-steel inspection shaft lid is rolled by reinforcing bar and is welded.

3, make the inserts of plastic-steel inspection shaft lid, the preparation method of inserts is that PP feed back, kieselguhr and wood chip and the abietic resin of fragmentation are put into high-speed mixer, behind the high-speed mixing 15min inserts is emitted and is sent in the loading hopper of double screw extruder.The proportioning of inserts prescription and percentage by weight are: PP feed back 70%, kieselguhr 15%, wood chip 10%, abietic resin 5%.Diatomaceous specification is 500 orders; The wood chip specification is 4 orders, dried again after the ammoniacal liquor ammonification is handled; The abietic resin specification is 80 mesh sieves.

4, the making of rectangle plastic-steel inspection shaft lid: the casting die of rectangle plastic-steel inspection shaft lid is installed on the flat board of vulcanizing press; Then the reinforcing cage of rectangle plastic-steel inspection shaft lid is put into casting die; The electrical heating switch of opening vulcanizing press is heated to 80 ℃ with casting die, opens the electrical heating switch of double screw extruder, and extruder temperature is risen to 230 ℃; Material in the double screw extruder is got in the reinforcing cage in the vulcanizing press top casting mould; Open vulcanizing press then, the pressure of control vulcanizing press is 50MPa, and vulcanizer suppresses rectangle plastic-steel inspection shaft lid.

Embodiment 2

1, makes the casting die of cylindrical plastic-steel inspection shaft lid.

2, make the reinforcing cage of cylindrical plastic-steel inspection shaft lid: the reinforcing cage of cylindrical plastic-steel inspection shaft lid is rolled by reinforcing bar and is welded.

3, make cylindrical plastic-steel inspection shaft lid and use inserts: the prescription of inserts is formed and percentage by weight is: PA feed back 65%, kieselguhr 20%, wood chip 10%, abietic resin 5%.The preparation method of inserts is that PA feed back, kieselguhr and wood chip and the abietic resin of fragmentation are put into high-speed mixer, behind the high-speed mixing 20min material is emitted and is sent in the loading hopper of double screw extruder.Diatomaceous specification is 400 orders; The wood chip specification is 6 orders, dried again after the ammoniacal liquor ammonification is handled; The abietic resin specification is 60 orders.

4, the making of cylindrical plastic-steel inspection shaft lid: the casting die of cylindrical plastic-steel inspection shaft lid is installed on the flat board of vulcanizing press; Then the reinforcing cage of cylindrical plastic-steel inspection shaft lid is put into casting die, open the electrical heating switch of vulcanizing press, casting die is heated to 85 ℃; Open the electrical heating switch of double screw extruder; Extruder temperature is risen to 260 ℃, the inserts in the double screw extruder is got in the reinforcing cage in the vulcanizing press top casting mould, open vulcanizing press then and press; The pressure of control vulcanizer is 60MPa, and vulcanizer suppresses cylindrical plastic-steel inspection shaft lid.

Claims

1. plastic-steel inspection shaft lid is characterized in that it is made up of reinforcing cage and inserts, and reinforcing cage is rolled by reinforcing bar and is welded, and inserts is mixed by plastics feed back, kieselguhr and wood chip and abietic resin.

2. a kind of plastic-steel inspection shaft lid according to claim 1 is characterized in that prescription that the plastic-steel inspection shaft covers used inserts is formed and percentage by weight is: plastics feed back 60～80%, kieselguhr 10～20%, wood chip 5～10%, abietic resin 5～10%.

3. a kind of plastic-steel inspection shaft lid according to claim 1 is characterized in that the used plastics feed back of plastic-steel inspection shaft lid can be any one in the middle of PE feed back, PP feed back, the PA feed back.

4. a kind of plastic-steel inspection shaft lid according to claim 1; The preparation method that it is characterized in that inserts is that plastics feed back, kieselguhr and wood chip and the abietic resin of fragmentation are put into high-speed mixer, behind high-speed mixing 10～20min material is emitted and put into the loading hopper of double screw extruder.

5. a kind of plastic-steel inspection shaft lid according to claim 1; The preparation method that it is characterized in that plastic-steel inspection shaft lid is that the casting die that the plastic-steel inspection shaft covers is installed on the flat board of vulcanizing press, then reinforcing cage is put into casting die, and the electrical heating switch of opening vulcanizing press is heated to 80～85 ℃ with casting die; Open the electrical heating switch of double screw extruder; Extruder temperature is risen to 230～270 ℃, the inserts in the double screw extruder is got in the reinforcing cage in the vulcanizing press top casting mould, open vulcanizing press then; The pressure of control vulcanizer is 40～60MPa, and vulcanizer suppresses plastic-steel inspection shaft lid.

6. according to claim 1 is a kind of plastic-steel inspection shaft lid, it is characterized in that used diatomaceous specification is 400 ~ 800 orders in the inserts; The specification of wood chip is 4 ~ 20 orders, dried again after the ammoniacal liquor ammonification is handled; The specification of abietic resin is 60 ~ 80 orders.