CN210477722U - Material pulling pin for injection molding of pregnancy testing rod shell - Google Patents

Abstract

The utility model discloses a draw material round pin for testing pregnant excellent casing injection moulding, including the kicking block, kicking block lower extreme fixed mounting draws the round pin material body, draw round pin material body lower extreme fixed mounting has the stair structure, the stair structure lower extreme fixed mounting has the round pin head, kicking block right side wall fixed mounting has the flange head, flange head left end fixed mounting has the connecting pipe, the connecting pipe lower extreme fixed mounting has first cooling chamber, first cooling chamber lower extreme fixed mounting has the second cooling chamber, draw round pin material body inner chamber left side fixed mounting has the heat insulating board, this draw material round pin for testing pregnant excellent casing injection moulding makes the draw material round pin divide into two parts, produces the temperature difference, improves the cooling speed of moulding runner and does not influence the temperature of subchannel simultaneously; the heat insulation effect of the pin pulling material body and the pin head is improved, the influence of the cooling cavity on the split runner is reduced, and the product quality is improved.

Description

Material pulling pin for injection molding of pregnancy testing rod shell

Technical Field

The utility model relates to the technical field of machinery, specifically be a draw material round pin for testing among pregnant excellent casing injection moulding.

Background

With the rapid development of the plastic industry and the continuous improvement of general and engineering plastics in the aspects of strength and the like, the application range of plastic products is also continuously expanded, and the consumption of plastic products is also rising. The pregnancy test stick is an indispensable medical supply in the medical care industry, has a large market demand, and comprises a plastic shell and a pregnancy test device positioned in the plastic shell. The traditional shell of the pregnancy testing rod is also formed by injection molding of a mold. At present, the injection mold industry is undergoing continuous technical innovation and transformation, and in a three-plate mold adopting a point type sprue bush, a pulling pin is used for temporarily fixing a runner of a point sprue part on a runner plate and cutting off a sprue and a molded product. In the prior art, the material pulling pin directly cuts off the flow distribution plate and the gate part, does not have the function of rapidly cooling the raw material of the gate part, and has low efficiency. To this end, we propose a puller pin for use in injection molding of a pregnancy test stick housing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a draw material round pin for testing among pregnant excellent casing injection moulding to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a draw material round pin for testing among pregnant excellent casing injection moulding, includes the kicking block, kicking block lower extreme fixed mounting draws the round pin material body, draw round pin material body lower extreme fixed mounting have the stair structure, stair structure lower extreme fixed mounting has the round pin head, kicking block right side wall fixed mounting has the flange head, flange head left end fixed mounting has the connecting pipe, connecting pipe lower extreme fixed mounting has first cooling cavity, first cooling cavity lower extreme fixed mounting has the second cooling cavity, draw round pin material body inner chamber left side fixed mounting have the heat insulating board, the heat insulating board is including mortar insulating layer, first inflation polyphenyl board, alkali-resisting glass fiber net cloth, anti-crack glue film and ceramic insulating layer.

Preferably, the heat shield is located to the left of the first cooling cavity.

Preferably, the outer end of the flange head is fixedly communicated with a guide pipe.

Preferably, epoxy glue layers are coated among the mortar heat insulation layer, the first expanded polystyrene board, the alkali-resistant glass fiber mesh cloth, the anti-crack glue layer and the ceramic heat insulation layer.

Preferably, the distance between the right end wall and the bottom of the second cooling cavity is not more than cm.

Compared with the prior art, the beneficial effects of the utility model are that: the material pulling pin for injection molding of the pregnancy testing rod shell is divided into two parts by the aid of the ejector block, the material pulling pin body, the step structure, the pin head and the first cooling cavity structure, so that temperature difference is generated, the cooling speed of a mold sprue is improved, and the temperature of a sub-runner is not influenced; through being equipped with heat insulating board, mortar insulating layer, first expanded polystyrene board, alkali-resisting glass fiber net cloth, anti-crack glue film and ceramic insulating layer structure, improve the thermal-insulated effect of dragging pin material body and round pin head, reduce the influence of cooling cavity to the shunting way, improve product quality.

Drawings

Fig. 1 is a sectional view of the present invention;

fig. 2 is a partial sectional view of the heat insulation board of the present invention.

In the figure: the structure comprises a top block 1, a pin pulling material body 2, a step structure 3, a pin head 4, a first cooling cavity 5, a connecting pipe 51, a flange head 52, a second cooling cavity 53, a heat insulation plate 6, a mortar heat insulation layer 61, a first expanded polystyrene board 62, an alkali-resistant glass fiber mesh fabric 63, an anti-crack glue layer 64 and a ceramic heat insulation layer 65.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a draw material round pin for testing among pregnant excellent casing injection moulding, includes kicking block 1, kicking block 1 is stainless steel kicking block 1, fixes drawing round pin material body 2 through kicking block 1, then draws round pin material body 2 to fix at the lower extreme of kicking block 1, then draws round pin material body 2 to fix round pin head 4 for round pin head 4 is fixed at the lower extreme of drawing round pin material body 2. The utility model discloses a structure, including ejector pad 1, round pin material body 2, round pin head 4, round pin material body 2, ejector pad 1, round pin head 4, round pin material body 2, round pin head 4, the lower extreme of round pin material body 2, then insert gate department through round pin head 4, make round pin head 4 cut the raw materials of moulding plastics of gate department, then make gate department cut through round pin head 4. The lower end of the pull pin material body 2 is fixedly provided with a step structure 3, the step structure 3 is in a step shape, and then the step structure 3 is inserted into a gate groove. 3 lower extreme fixed mounting of stair structure has round pin head 4, round pin head 4 is the platform form, and round pin head 4 is stainless steel round pin head 4, and round pin head 4 blocks up runner department for runner department is blockked up. The fixed mounting of kicking block 1 right-hand member wall has flange head 52, flange head 52 connecting tube for connecting pipe 51 communicates in the inner chamber of first cooling cavity 5, then the fixed intercommunication in second cooling cavity 53 of 5 lower extremes of first cooling cavity, then deposits the coolant liquid through the inner chamber of second cooling cavity 53 and first cooling cavity 5, makes the right-hand member wall of dragging pin material body 2 faster to its refrigerated effect, makes runner department correspond mould department shaping faster. The outer end of the flange head 52 is fixedly communicated with a guide pipe. The connecting pipe 51 is a stainless steel connecting pipe 51, the connecting pipe 51 is communicated with the inner cavity of the first cooling cavity 5, so that cooling liquid can flow into the inner cavity of the first cooling cavity 5, the distance between the first cooling cavity 5 and the side wall of the pin pulling material body 2 is not more than one centimeter, and the first cooling cavity 5 is sealed. The left end of the flange head 52 is fixedly provided with a connecting pipe 51, and the lower end of the connecting pipe 51 is fixedly communicated with the inner cavity of the first cooling cavity 5. The lower end of the connecting pipe 51 is fixedly provided with a first cooling cavity 5, and the inner cavity of the first cooling cavity 5 is communicated with the inner cavity of a second cooling cavity 53. The difference between the size of the inner cavities of the first cooling cavity 5 and the second cooling cavity 53 and the half size of the inner cavity of the pull pin material body 2 is not more than 5 cubic centimeters. So that the first cooling cavity 5 has a sufficient cooling effect, and the strength of the pin pulling material body 2 and the pin head 4 is ensured. The lower end of the first cooling cavity 5 is fixedly provided with a second cooling cavity 53, the inner cavity of the second cooling cavity 53 is in an isosceles trapezoid shape and is communicated with the inner cavity of the first cooling cavity 5 through the second cooling cavity 53. The distance between the right end wall and the bottom of the second cooling cavity 53 is not more than 2 cm. The cooling effect is ensured, and meanwhile, certain strength is ensured. A heat insulation plate 6 is fixedly mounted on the left side of the inner cavity of the pull pin material body 2, and the heat insulation plate 6 is fixed in the inner cavity of the pull pin material body 2 through a plastic mold, so that the firmness of the heat insulation plate 6 for fixing the pull pin material body 2 is higher. The heat shield 6 is located to the left of the first cooling chamber 5. The pin pulling material body 2 is divided into two parts, and the temperature difference between the two parts of the pin pulling material body 2 is poor. The heat insulation board 6 comprises a mortar heat insulation layer 61, a first expansion polyphenyl board 62, an alkali-resistant glass fiber mesh fabric 63, an anti-crack glue layer 64 and a ceramic heat insulation layer 65. Epoxy glue layers are coated among the mortar heat insulation layer 61, the first expanded polystyrene board 62, the alkali-resistant glass fiber mesh cloth 63, the anti-crack glue layer 64 and the ceramic heat insulation layer 65. The epoxy glue layer is fixed together to the inside structure of heat insulating board 6, and then heat insulating board 6 makes its structure more stable, and the fixed firmness of 6 inner chambers of heat insulating board is higher simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a draw material round pin for testing among pregnant excellent casing injection moulding, includes kicking block (1), its characterized in that: ejector pad (1) lower extreme fixed mounting has the material body of pulling a round pin (2), pull round pin material body (2) lower extreme fixed mounting has stair structure (3), stair structure (3) lower extreme fixed mounting has round pin head (4), ejector pad (1) right-hand member wall fixed mounting has flange head (52), flange head (52) left end fixed mounting has connecting pipe (51), connecting pipe (51) lower extreme fixed mounting has first cooling cavity (5), first cooling cavity (5) lower extreme fixed mounting has second cooling cavity (53), pull round pin material body (2) inner chamber left side fixed mounting has heat insulating board (6), heat insulating board (6) are including mortar insulating layer (61), first inflation polyphenyl board (62), glass alkali-resisting net cloth (63), anti-crack glue film (64) and ceramic insulating layer (65).

2. The pulling pin for injection molding of pregnancy testing rod housings according to claim 1, wherein: the heat insulation plate (6) is positioned at the left side of the first cooling cavity (5).

3. The pulling pin for injection molding of pregnancy testing rod housings according to claim 1, wherein: the outer end of the flange head (52) is fixedly communicated with a guide pipe.

4. The pulling pin for injection molding of pregnancy testing rod housings according to claim 1, wherein: epoxy glue layers are coated among the mortar heat insulation layer (61), the first expanded polystyrene board (62), the alkali-resistant glass fiber mesh cloth (63), the anti-crack glue layer (64) and the ceramic heat insulation layer (65).

5. The pulling pin for injection molding of pregnancy testing rod housings according to claim 1, wherein: the distance between the right end wall and the bottom of the second cooling cavity (53) is not more than 2 cm.

Images