CN202062578U - Locating structure of hot runner pouring nozzle - Google Patents

Abstract

The utility model relates to a locating structure of a hot runner pouring nozzle, which comprises a pouring nozzle and a locating ring. The locating ring is sleeved on the outside of the pouring nozzle. The locating structure of the hot runner pouring nozzle is characterized in that a passage and at least one locating groove are formed on the pouring nozzle. The passage penetrates axially and is formed inside the pouring nozzle, and the locating groove is inwards recessed and formed on the ring wall of the pouring nozzle. The inner wall of the locating ring is inwards recessed to form at least one locating groove. The locating grooves and the corresponding locating grooves of the pouring nozzle are opposite to each other in pairs. The locating structure also comprises at least one locating bead. The locating beads are disposed between the locating grooves of the pouring nozzle and the locating ring and the locating grooves are opposite to each other in pairs. When the pouring nozzle and the locating ring are processed and produced, only the corresponding locating grooves need to be formed respectively on the opposite ring walls, and then the locating beads are placed in two opposite locating grooves in assembling, and the relative position between the pouring nozzle and the locating ring is fixed. The objective of preventing the pouring nozzle from rotating relative to the locating ring is realized. The locating structure is not only easy to process and produce but also convenient to assemble.

Description

Hot runner is irritated the mouth location structure

Technical field

The utility model relates to injection-moulding plastic, promptly forces required moulding material capacity to enter part, parts or the annex of closed model by geat, particularly relates to a kind of hot runner and irritates the mouth location structure.

Background technology

Shown in Figure 5 is the filling mouth (51) and locating ring (52) that has now on the hot runner, described filling mouth (51) central authorities run through and are formed with passage (511), described passage (511) can flow betwixt for molten plastic, and can wear for a needle (not shown), the discharging of using the described molten plastic of control whether, described locating ring (52) ring is established described filling mouth (51) and is fixedly installed on the hot runner.

Wherein, locate mode between described filling mouth (51) and locating ring (52) generally is to make described the two mutual socket place form the shape that section is non-circular and cooperatively interacts respectively, make that irritating mouth (51) can't relatively rotate behind the fit mutually with locating ring (52), the fixing by this relative position of mouth (51) on hot runner of irritating.

Yet, the mode of the relative positioning between above-mentioned filling mouth (51) and locating ring (52), make described the two when processing and fabricating, its must cooperate just in order to the section configuration of mutual socket place and size, just can make really mutual fit of described filling mouth (51) and locating ring (52) and mutual location, otherwise, may cause the two socket mutually, or after socket, irritate mouth (51) and still can rock by relative positioning ring (52), therefore, the locate mode of the hot runner of above-mentioned prior art filling mouth (51) needs further improvement.

Summary of the invention

Technical problem to be solved in the utility model is that the filling mouth location structure size that remedies above-mentioned prior art must cooperate just, causes the defective of processing and fabricating difficulty, provides a kind of hot runner to irritate the mouth location structure, solves.

Technical problem of the present utility model is solved by the following technical programs.

This hot runner is irritated the mouth location structure, comprises irritating mouth and locating ring, and described locating ring is set in the described filling mouth outside.

The characteristics that this hot runner is irritated the mouth location structure are:

Be formed with a passage and at least one detent on the described filling mouth, described channel axis is formed at described filling mouth inside to running through, and described detent concave shaped is formed on the ring wall face of described filling mouth.

Indent is formed with at least one detent on the inwall of described locating ring, and each detent is relative in twos with the corresponding detent of described filling mouth.

Also comprise at least one positioning bead, each positioning bead is located between described filling mouth each detent relative with two of described locating ring.

Technical problem of the present utility model is solved by following further technical scheme.

Be fixed with the reference column of an axial projection on the outer wall of described locating ring.

The beneficial effect that the utility model is compared with the prior art is:

Filling mouth of the present utility model and locating ring are formed with mutual corresponding detent respectively on its relative ring wall in the time of only must processing and fabricating, in two relative detents, insert positioning bead again during assembling, just can fix the relative position of irritating between mouth and locating ring, reach the purpose that prevents to irritate the rotation of mouth relative positioning ring, not only easy processing and fabricating also is convenient to assembling.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the utility model specific embodiment;

Fig. 2 is the axial section of the utility model specific embodiment;

Fig. 3 is the radial section figure of the utility model specific embodiment;

Fig. 4 is that the utility model specific embodiment is applied in the axial section in the hot runner;

Fig. 5 is the axial section of prior art.

The specific embodiment

Below in conjunction with the specific embodiment and contrast accompanying drawing the utility model is described.

Hot runner as shown in Figure 4, comprise a upper cylinder body (41), one lower cylinder body (42) and a needle assembly (43), upper cylinder body (41), one lower cylinder body (42) is set in distance, lower cylinder body (42) radially wears and is formed with a plastic passages (421), and axially be equiped with a needle guide pin bushing (422), needle guide pin bushing (422) also runs through with respect to a side of the plastic passages (421) of lower cylinder body (42) and forms a plastic passages (423), the section of plastic passages (423) is inverted L shape, the one end communicates with the plastic passages (421) of lower cylinder body (42), needle assembly (43) is located in upper cylinder body (41), in one lower cylinder body (42), it drives a needle (432) by a piston (431) and moves back and forth.

The hot runner of this specific embodiment is as shown in Figure 1 irritated the mouth location structure, be arranged on the place, bottom of needle guide pin bushing (422), comprise Yi Guanzui (10), one locating ring (20) and at least one positioning bead (30), wherein: be formed with a passage (11) on the filling mouth (10) as shown in Figure 2, one bulge loop (12) and at least one detent (13), passage (11) axially runs through to be formed at irritates mouth (10) inside, passage (11) communicates with the other end of the plastic of conduit (423) of needle guide pin bushing (422), and can supply needle (432) to be located in therebetween, bulge loop (12) radially projection ring is established on the ring wall face that is molded over filling mouth (10), and detent (13) concave shaped is formed on the outer wall of bulge loop (12); Locating ring as shown in Figure 3 (20) is set in irritates mouth (10) bulge loop (12) outside, indent is formed with at least one detent (21) on the inwall of locating ring (20), detent (21) is relative in twos with the detent (13) of irritating mouth (10), be fixed with the reference column (22) of an axial projection on the outer wall of locating ring (20), reference column as shown in Figure 4 (22) wears and is positioned to use the relative position between fixed hot runner and mould (60) on a mould (60); Each positioning bead (30) is located at irritates between mouth (10) detent (13,21) relative with two of locating ring (20), makes to irritate mouth (10) and can't rotate by relative positioning ring (20), and then will irritate mouth (10) and be positioned at relative position on the hot runner.

Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design, make some alternative or obvious modification that are equal to; and performance or purposes are identical, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of being submitted to.

Claims (2)

1. a hot runner is irritated the mouth location structure, comprises irritating mouth and locating ring, and described locating ring is set in the described filling mouth outside, it is characterized in that:

Be formed with a passage and at least one detent on the described filling mouth, described channel axis is formed at described filling mouth inside to running through, and described detent concave shaped is formed on the ring wall face of described filling mouth;

Indent is formed with at least one detent on the inwall of described locating ring, and each detent is relative in twos with the corresponding detent of described filling mouth;

Also comprise at least one positioning bead, each positioning bead is located between described filling mouth each detent relative with two of described locating ring.

2. hot runner as claimed in claim 1 is irritated the mouth location structure, it is characterized in that:

Be fixed with the reference column of an axial projection on the outer wall of described locating ring.

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