CN103144226A

CN103144226A - Axial positioning structure of plastic die thread sleeve

Info

Publication number: CN103144226A
Application number: CN201310056979XA
Authority: CN
Inventors: 张劲松; 范静东; 卓健
Original assignee: NINGBO TIANLONG ELECTRONICS CO Ltd
Current assignee: NINGBO TIANLONG ELECTRONICS CO Ltd
Priority date: 2013-02-22
Filing date: 2013-02-22
Publication date: 2013-06-12
Anticipated expiration: 2033-02-22
Also published as: CN103144226B

Abstract

The invention discloses an axial positioning structure of a plastic die thread sleeve. The axial positioning structure comprises a fixed die core and a moving die core which are combined together along a die joint, wherein the fixed die core is provided with a fixed die casting insert, the moving die core is provided with a moving die casting insert, and the fixed die casting insert and the moving die casting insert are combined together; the thread sleeve is axially arranged in a gap between the fixed die core and the moving die core in a sliding manner, and the thread sleeve is inserted in a casting cavity of a plastic product, defined by the fixed die core, the moving die core, the fixed die casting insert and the moving die casting insert; and the thread sleeve is connected with a positioning casting insert which abuts against the die joint in a die assembly process, so that the thread sleeve is axially positioned at a correct position.

Description

Mould of plastics thread bush axial positioning structure

Technical field

The present invention relates to mould of plastics thread bush axial positioning mechanism.

Background technology

As Fig. 1,2 indicated threaded plastic products, the particularity of this product is that screw product needs the shaping workpiece rotating stripping demoulding, and the thread forming workpiece has determined the original position of plastic product ridge at the height and position of stripping direction, and the original position of thread has determined the whether qualified of product, so the accurate positioning of thread bush has directly determined the quality of plastic product.

The uncertain situation that will produce product threaded offset tram of thread bush height and position is specially and moves (seeing Fig. 4 dotted line position) and move down (seeing Fig. 5 dotted line position), and Fig. 3 is seen in normal position.Thread is only guaranteed in the normal position of Fig. 3 signal, and plastic product is only qualified.

Existing mould thread bush axial positioning mechanism is referring to Fig. 6, Fig. 7.In Fig. 6,1` is the cover half die, and 2` is the cover half mold insert, and 3` is thread bush, and 5` is the dynamic model die, and 6` is the dynamic model mold insert, and 7` is that thread bush is located mold insert, and 8` is the product that needs injection moulding.

This mould running in process of production is as follows:

Mould is located by thread bush locating hole that mold insert 7` passes cover half die 1` and thread bush 3` and is confirmed that the thread bush position puts in place fully after normal matched moulds.If the thread bush location mold insert 7` that passes cover half die 1` can not pass the locating hole of thread bush smoothly; the product of producing under this state so is defective, usually can increase at the front end of thread bush location mold insert 7` guide angle and guarantee that its locating hole that can pass smoothly cover half die 1` and thread bush 3` confirms that the thread bush position puts in place fully.

This structure has following defect problem: each mould needs manually to debug the thread bush position in the production cycle, locate mold insert 7` at every turn and all must pass smoothly the locating hole of thread bush, and efficient is very low, and the production cost of product is very high; Owing to adopting manual debugging, so error ratio is larger, the qualification rate of product does not guarantee simultaneously.

Summary of the invention

The present invention will overcome the above-mentioned shortcoming of prior art, and a kind of efficient original text, error is little, product percent of pass is high, cost is low mould of plastics thread bush axial positioning structure are provided.

Mould of plastics thread bush axial positioning structure of the present invention, comprise along mutual involutory cover half die 1 and the dynamic model die 5 of die joint 9, cover half mold insert 2 is housed on cover half die 1, dynamic model mold insert 6 is housed on dynamic model die 5, described cover half mold insert 2 is involutory with dynamic model mold insert 6; Thread bush 3 can be arranged in gap between described cover half die 1 and dynamic model die 5 axially slidably, and described thread bush 3 inserts the casting die cavity of the plastic product that cover half dies 1, dynamic model die 5, cover half mold insert 2, dynamic model mold insert 6 enclose; It is characterized in that: be connected with a location mold insert 4 on described thread bush 3, described location mold insert 4 is conflicted with described die joint 9 when matched moulds, thereby described thread bush 3 axial location are arrived correct position.

Further, have jack on described thread bush 3, the protuberance of location mold insert 4 inserts in described jack.

This structure mold running in process of production is as follows:

Thread bush mold insert 4 is fixed together with thread bush 3, in mould matched moulds process, the situation of the contact of die joint is as follows, thread bush mold insert 4 can be forced to push back the tram under the pressure-acting of dynamic model die 5, because thread bush mold insert 4 and thread bush 3 are fixed together, so thread bush 3 can be fixed on correct position simultaneously.

The present invention makes the location of thread bush and the position auto-associating of die joint dexterously by the positioning datum effect of die joint.

Advantage of the present invention is:

1, simple and easy thread bush targeting scheme need to not carry out artificial Attended Operation within each production cycle, and the production rate improves a lot.

2, mould structure is simple, gets rid of human factor, and constant product quality improves a lot.

Description of drawings:

Fig. 1 is the schematic diagram of the threaded plastic product of manufacturing of the present invention

Fig. 2 is the top view of Fig. 1 product

Fig. 2 a is that the A-A of Fig. 2 is to cutaway view

Fig. 3 is the B section partial enlarged drawing of Fig. 2 a when the axial location of screw thread is correct

Fig. 4 is the B section partial enlarged drawing of Fig. 2 a when moving on the axial location of screw thread, and dotted line wherein is the position after moving on screw thread

Fig. 5 is the B section partial enlarged drawing of Fig. 2 a when the axial location of screw thread moves down, and dotted line wherein is the position after screw thread moves down

Fig. 6 is the structural representation of existing mold

Fig. 7 is the C section partial enlarged drawing of Fig. 6

Fig. 8 is structural representation of the present invention during matched moulds not

Structural representation of the present invention when Fig. 9 is matched moulds

Figure 10 is the D section partial enlarged drawing of Fig. 9

The specific embodiment

With reference to accompanying drawing 8,9,10:

Have jack on described thread bush 3, the protuberance of location mold insert 4 inserts in described jack.Can open a plurality of jacks vertically on thread bush 3, location mold insert 4 inserts in different jacks and just can make thread bush be positioned different axial locations, is similar to the gear of thread bush 3 axial locations,

This structure mold running in process of production is as follows:

The described content of this specification embodiment is only enumerating the way of realization of invention inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reaches conceives the equivalent technologies means that can expect according to the present invention in those skilled in the art.

Claims

1. mould of plastics thread bush axial positioning structure, comprise along mutual involutory cover half die (1) and the dynamic model die (5) of die joint (9), cover half mold insert (2) is housed on cover half die (1), dynamic model mold insert (6) is housed on dynamic model die (5), and described cover half mold insert (2) is involutory with dynamic model mold insert (6); Thread bush (3) can be arranged in gap between described cover half die (1) and dynamic model die (5) axially slidably, and described thread bush (3) inserts the casting die cavity of the plastic product that cover half die (1), dynamic model die (5), cover half mold insert (2), dynamic model mold insert (6) enclose; It is characterized in that: be connected with a location mold insert (4) on described thread bush (3), described location mold insert (4) is conflicted with described die joint (9) when matched moulds, thereby described thread bush (3) axial location is arrived correct position.

2. mould of plastics thread bush axial positioning structure as claimed in claim 1, it is characterized in that: described thread bush has jack on (3), and the protuberance of location mold insert (4) inserts in described jack.