CN203125793U

CN203125793U - Axial locating structure of thread bushing of plastic mould

Info

Publication number: CN203125793U
Application number: CN 201320081500
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: 2013-08-14
Anticipated expiration: 2023-02-22

Abstract

The utility model discloses an axial locating structure of a thread bushing of a plastic mould. The axial locating structure comprises a fixed mould core and a movable mould core which are in butt joint along a parting surface, wherein a fixed mould insert is arranged on the fixed mould core, a movable mould insert is arranged on the movable mould core, and the fixed mould insert is in butt joint with the movable mould insert. The thread bushing is arranged in a gap between the fixed mould core and the movable mould core in an axial sliding manner, and is inserted in a plastic product casting cavity which is defined by the fixed mould core, the movable mould core, the fixed mould insert and the movable mould insert; and a locating insert is connected to the thread bushing and pushes against the parting surface during die assembly, and thus the thread bushing is axially located in a correct position.

Description

Mould of plastics thread bush axial positioning structure

Technical field

The utility model relates to mould of plastics thread bush axial location 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 location mechanism is referring to Fig. 6, Fig. 7.Among 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 thread bush location mold insert, and 8` is the product that needs injection moulding.

This mould running in process of production is as follows:

Mould passes the locating hole of cover half die 1` and thread bush 3` and confirms that the thread bush position puts in place fully behind normal matched moulds by thread bush location mold insert 7`.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 is then defective so, and common its locating hole that can pass cover half die 1` and thread bush 3` smoothly that can guarantee at the front end increase guide angle of thread bush location mold insert 7` 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, locatees the locating hole that mold insert 7` must pass thread bush smoothly at every turn, and efficient is very low, and production cost of products is very high; Owing to adopt artificial debugging, so error ratio is bigger, the qualification rate of product does not guarantee simultaneously.

Summary of the invention

The utility model 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 described in the utility model, comprise along die joint 9 mutual involutory cover half die 1 and dynamic model dies 5, cover half mold insert 2 is housed on the cover half die 1, dynamic model mold insert 6 is housed on the 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 the gap between described cover half die 1 and the 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 the 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 the described thread bush 3, the protuberance of location mold insert 4 inserts in the described jack.

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

Thread bush mold insert 4 cooperates with thread bush 3 and is fixed together, 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 effect of dynamic model die 5, because thread bush mold insert 4 cooperates with thread bush 3 and to be fixed together, so understanding, thread bush 3 is fixed on correct position simultaneously.

The utility model by the location benchmark effect of die joint, makes the location of thread bush and the position auto-associating of die joint dexterously.

The utility model has the advantages that:

1, simple and easy thread bush targeting scheme need not carry out artificial Attended Operation in 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 the utility model manufacturing

Fig. 2 is the vertical 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 portion partial enlarged drawing of Fig. 2 a when the axial location of screw thread is correct

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

Fig. 5 is the B portion 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 portion partial enlarged drawing of Fig. 6

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

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

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

The specific embodiment

With reference to accompanying

drawing

8,9,10:

Have jack on the described thread bush 3, the protuberance of location mold insert 4 inserts in the described jack.Can open a plurality of jacks vertically on the thread bush 3, location mold insert 4 inserts in the different jacks and just can make that thread bush is 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 only is enumerating the way of realization of utility model utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.

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 the cover half die (1), dynamic model mold insert (6) is housed on the 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 the gap between described cover half die (1) and the 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 the 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 the described jack.