CN201105486Y - positioning mechanism - Google Patents

Abstract

The utility model discloses a positioning mechanism, including setting element, locating pin and spring. The positioning piece is provided with a positioning cavity and at least one accommodating cavity communicated with the positioning cavity. The number of the accommodating cavities, the positioning pins and the springs is equal. The positioning pins are respectively arranged in the corresponding accommodating cavities, and one end of each positioning pin extends into the corresponding positioning cavity. The springs are respectively arranged in the accommodating cavities and push the other ends of the positioning pins. Elastic force through the spring promotes the locating pin for locating pin centre gripping one shot forming product, thereby this one shot forming product can not take place to rotate and remove when secondary forming, and then the precision when improving secondary forming, therefore use the utility model discloses positioning mechanism can improve the yield of secondary forming product.

Description

positioning mechanism

Technical field

The utility model relates to a positioning mechanism, in particular to a positioning mechanism used in an injection molding mold. The positioning mechanism is used to clamp a product after primary molding for secondary injection molding.

Background technique

Injection molding technology is widely used in various fields. Due to the different material requirements for different parts of the molded product, when manufacturing the product, a part of the product (hereinafter referred to as a one-time molding product) is generally molded first, and then the part is fixed and injected for the second time. Another part is molded on the molded product, and the once-molded product is called a secondary molded product after the second injection molding.

In the prior art, when secondary molding is performed on a primary molded product, generally the primary molded product is only placed at a certain fixed position or the primary molded product is simply fixed. However, due to the external force during the overmolding process, the primary molded product may rotate or move, resulting in low precision of the overmolded product, which in turn reduces the yield of the overmolded product.

Utility model content

The purpose of this utility model is to provide a positioning mechanism capable of stably clamping a one-shot molded product in view of the above-mentioned defects in the prior art.

In order to achieve the above object, the positioning mechanism of the utility model includes a positioning piece, a positioning pin and a spring. A positioning cavity and at least one receiving cavity communicated with the positioning cavity are opened on the positioning member. The number of the positioning pins is equal to the number of the receiving cavities, and the positioning pins are respectively placed in the corresponding receiving cavities and one end of which extends into the positioning cavities. The number of the springs is equal to the number of the positioning pins, and the springs are respectively placed in the receiving cavity and pushed against the other end of the positioning pins.

As mentioned above, the positioning mechanism of the utility model provides a receiving cavity on the positioning member, and places the positioning pin and the spring in the receiving cavity, and the positioning pin is pushed by the elastic force of the spring, so that the positioning pin clamps the primary molding product, thereby The primary molding product will not rotate and move during the secondary molding, thereby improving the accuracy of the secondary molding, so the use of the positioning mechanism of the utility model can improve the yield of the secondary molding product.

Description of drawings

In the accompanying drawings of the manual:

Fig. 1 is a three-dimensional exploded view of the positioning mechanism of the present invention.

Fig. 2 is a sectional view of the positioning member shown in Fig. 1 along line II-II.

Fig. 3 is a three-dimensional combined view of the positioning mechanism of the present invention.

Fig. 4 is a sectional view of the positioning mechanism shown in Fig. 3 along line IV-IV.

The reference numerals of each element in the figure are explained as follows:

Positioning mechanism 1 Positioning piece 10

Upper surface 11 Side 12

Positioning chamber 13 Storage chamber 14

Limiting chamber 141 Holding chamber 142

Locating pin 20 Locating end 21

Abutment 22 Spring 30

Set screw 40

Detailed ways

In order to illustrate the technical content, structural features, purpose and effect of the present utility model in detail, the following will describe in detail in conjunction with the embodiments and accompanying drawings.

Please refer to FIG. 1 , the positioning mechanism 1 of the present invention includes a positioning member 10 , a positioning pin 20 , a spring 30 and a positioning screw 40 .

Referring to FIGS. 1 to 3 , the positioning member 10 is roughly in the shape of a cuboid, and has an upper surface 11 and two side surfaces 12 . A positioning cavity 13 is defined downwards on the upper surface 11 of the positioning member 10 . Both side surfaces 12 of the positioning member 10 are provided with a receiving chamber 14 inwardly. The receiving chamber 14 has a limiting cavity 141 communicating with the positioning cavity 13 and a retaining cavity 141 communicating with the limiting cavity 141 and having a diameter larger than that of the limiting cavity 141. cavity 142 . Threads are formed on the wall of the cavity where the holding cavity 142 communicates with the outside world.

Please continue to refer to FIG. 1 , the positioning pin 20 has a cylindrical positioning end 21 and an abutting end 22 connected to the positioning end 21 and having a diameter larger than that of the positioning end 21 . Threads are formed on the surface of the positioning screw 40 .

Referring to Figures 2 to 4, the positioning pin 20 is inserted into the receiving cavity 14, the positioning end 21 of the positioning pin 20 is accommodated in the limiting cavity 141 of the receiving cavity 14 and the end of the positioning end 21 extends into the positioning cavity 13, The abutting end 22 is placed in the holding cavity 142 and can abut against the positioning member 10 . The positioning screw 40 is accommodated in the holding cavity 142 , and the thread of the positioning screw 40 is engaged with the thread of the wall of the holding cavity 142 , so that the positioning screw 40 is fixed in the holding cavity 142 . The spring 30 is accommodated in the holding cavity 142 and its two ends elastically abut against the abutting end 22 of the positioning pin 20 and the positioning screw 40 , so that the spring 30 pushes the positioning pin 20 into the positioning cavity 13 .

When the primary molded product is inserted into the positioning cavity 13 , the primary molded product pushes the positioning pin 20 , and the positioning pin 20 compresses the spring 30 until the positioning surface of the primary molded product is located between the two positioning pins 20 . At this time, the spring 30 pushes the positioning pin 20 so that the positioning pin 20 clamps the primary molded product and prevents it from rotating and moving, thereby facilitating its secondary processing and molding.

In summary, the positioning mechanism 1 of the present utility model provides a receiving chamber 14 on the positioning member 10, and places the positioning pin 20 and the spring 30 in the receiving cavity 14, and pushes the positioning pin 20 by the elastic force of the spring 30, so that The positioning pin 20 clamps the primary molding product, so that the primary molding product will not rotate and move during the secondary molding, thereby improving the accuracy of the secondary molding. Therefore, the use of the positioning mechanism 1 of the utility model can improve the accuracy of the secondary molding product. yield rate.

Claims (5)

1. a detent mechanism comprises keeper; It is characterized in that: offer positioning chamber and this detent mechanism of at least one host cavity of being communicated with this positioning chamber on the described keeper and also have alignment pin and spring with quantity such as host cavity; Alignment pin places in the corresponding host cavity respectively and an end of alignment pin stretches in the positioning chamber; Spring places in the corresponding host cavity respectively and presses against on the other end of corresponding alignment pin.

2. detent mechanism according to claim 1 is characterized in that: described detent mechanism also has the set screw with quantity such as alignment pins, and set screw is separately fixed in the corresponding host cavity, and described spring also presses against on this set screw.

3. detent mechanism according to claim 2 is characterized in that: described host cavity have the limit chamber that is communicated with positioning chamber and be communicated with limit chamber and diameter greater than the fixing chamber of limit chamber diameter; Described alignment pin have positioning end and be connected with this positioning end and diameter greater than the abutment end of positioning end diameter, positioning end places limit chamber end interior and this positioning end to stretch in the positioning chamber, abutment end places in the fixing chamber; Described set screw is fixed in the fixing chamber; Described spring places in the fixing chamber and its two ends are pressed on respectively on the abutment end of set screw and alignment pin.

4. detent mechanism according to claim 3 is characterized in that: described keeper has a upper surface and two sides; The keeper upper surface offers described positioning chamber downwards; The two sides of keeper inwardly offer described host cavity.

5. detent mechanism according to claim 4 is characterized in that: the end inwall that the fixing chamber of described host cavity is in communication with the outside is formed with screw thread; Described set screw surface also has screw thread, and the screw thread on the screw thread of this fixing cavity wall and this set screw surface is meshing with each other.

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