CN205148775U - Injection mold structure of a two-color product - Google Patents

Abstract

The utility model discloses an injection mold structure for a two-color product, including a single-color injection molding machine and a movable injection molding turret; the single-color injection molding machine includes a rear mold, in which a molding cavity that passes through from top to bottom is provided, a rear mold core is provided in the molding cavity, and a shrink insert is provided to surround the rear mold core, and the top edge of the shrink insert serves as a lower sealing bottom surface for product molding; the rear mold is fixed on the rear template, and a driving device is fixed on the rear template, and the driving device is connected to the shrink insert through a shrink connecting rod assembly, and the driving device drives the shrink insert to rise and fall; after the first beer is formed, the shrink insert descends so that there is a gap between the shrink insert and the bottom of the product, and the movable injection molding turret performs a second beer injection molding on the gap. The overall structure of the utility model is simple and compact, and the single-color injection molding machine and the movable injection molding turret are used to realize the injection molding of the two-color product, which can effectively reduce the injection molding cycle and production cost, and improve the yield rate.

Description

Injection mold structure of a two-color product

technical field

The utility model relates to the technical field of mold structures, in particular to an injection mold structure for two-color products.

Background technique

Two-color mold refers to the mold in which two plastic materials are injected on the same injection molding machine and molded twice, but the product is only molded once. Generally, this molding process is also called double-material injection molding, which is usually completed by a set of molds and requires a special two-color injection molding machine. Two-color molds are becoming more and more popular in the market. This process can make the appearance of the product more beautiful, and it is easy to change the color without spraying, but it is expensive and requires high technology.

The current two-color product mold injection molding has a relatively complex mold structure, so it can achieve high processing accuracy, but in the case of insufficient optimization, the defective rate of injection molding is still very high. Moreover, the current production of two-color products requires the use of two-color injection molding machines. Two sets of molds need to be developed, and the products need secondary assembly. The yield is relatively low, and the injection molding cycle is long and the production cost is high.

Contents of the invention

The technical problem to be solved by the utility model is to provide an injection mold structure for two-color products in view of the above-mentioned deficiencies in the prior art. , can effectively reduce the injection molding cycle and production costs, improve yield.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a kind of injection mold structure for two-color products, including a single-color injection molding machine platform and a movable injection molding fort; There is a molding cavity that runs through up and down. In the molding cavity, there is a rear mold core, and a shrinking insert surrounds the rear mold core. The top edge of the shrinking insert is used as the bottom of the product molding. The bottom surface is sealed; the rear mold is fixed on the rear template, and a driving device is fixed on the rear template. Describe the lifting of the shrink insert; after the first molding, the shrink insert descends so that there is a gap between the shrink insert and the bottom of the product, and the movable injection molding turret performs second injection molding on the gap .

Wherein, the connecting rod assembly includes a first positioning block fixedly connected with the output shaft of the driving device, a second positioning block abutting against the first positioning block through an inclined plane, and connecting the second positioning block And the connecting rod of the shrink insert.

Wherein, the position blocks of the first row move horizontally, and the position blocks of the second row are driven up and down through the inclined plane.

The beneficial effect of the utility model is: the combination of the single-color injection molding machine and the movable injection molding fort realizes the injection molding of two-color products, which can simplify the mold structure of the two-color injection molding, and the mold only needs to be made on the original basis, and the product does not change. Secondary assembly is required, which can effectively increase the yield and shorten the injection molding cycle, thereby reducing production costs. Moreover, the simple structure can reduce the difficulty of disassembly and maintenance of the mold, and it can be used to make single-color products without the need to make two-color products, which has strong applicability.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a partial structure schematic diagram of the utility model (rear template is omitted);

In the figure, 1, the back mold; 2, the back mold core; 3, the shrink insert; 4, the back template; 5, the driving device; 6, the first row of blocks; 7, the second row of blocks; Rod sleeve; 9, upper connecting rod; 10, lower connecting rod; 11, shaft sleeve; 12, thimble plate; 13, thimble; 14, product; 15, front mold.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figures 1 and 2, an injection mold structure for a two-color product includes a single-color injection molding machine and a movable injection molding fort; A molding cavity, in which a rear mold core 2 is arranged, and a shrink insert 3 is arranged to surround the rear mold core 2, and the top edge of the shrink insert 3 serves as a lower seal for product 14 molding Bottom surface; the rear mold 1 is fixed on the rear template 4, and the rear template 4 is fixed with a driving device 5, and the driving device 5 is connected to the indentation insert 3 through the indentation connecting rod assembly. The driving device 5 drives the lifting of the shrink insert 3. After the first beer is formed, the shrinking insert 3 is driven down by the driving device 5 so that there is a gap between the shrinking insert 3 and the bottom of the product 14, and the movable injection molding turret performs a second step on the gap. Beer injection molding, so the product 14 does not need secondary assembly during the entire molding process, shortening the injection molding cycle. The driving device 5 adopts an oil cylinder, and there are two groups in total, which are fixed laterally on the left and right sides of the rear formwork 4 respectively. Front mold 15 is placed on the top of back mold 1.

Wherein, the connecting rod assembly includes a first row block 6 fixedly connected to the output shaft of the driving device 5, a second row block 7 abutting against the first row block 6 through an inclined plane, and a second row block 7 connected to the first row block 6. Two rows of block 7 and the connecting rod of insert 3. The structure of the connecting rod is composed of a connecting rod sleeve 8, an upper connecting rod 9 and a lower connecting rod 10. The upper part of the upper connecting rod 9 is fixed in the inlay insert 3, and the lower part of the upper connecting rod 9 is fixed in the connecting rod sleeve 8. Middle; the upper part of the lower connecting rod 10 is fixed in the connecting rod sleeve 8, and the lower part of the lower connecting rod 10 is fixed in the second row block 7. And the connecting rod sleeve 8 is passed through the shaft sleeve 11 provided in the rear template 4 .

Wherein, the first row positioning block 6 moves horizontally, and the second row positioning block 7 is driven up and down through the inclined plane. When the output shaft of the oil cylinder extends to drive the first row block 6 to move to the center, the first row block 6 pushes the second row block 7 to rise; when the output shaft of the oil cylinder retracts to drive the first row block 6 to move to the cylinder side, The second row bit block 7 drops.

A thimble plate 12 is arranged below the rear template 4 , and an thimble 13 penetrating through the rear mold core 2 is arranged on the thimble plate 12 .

The above embodiments are only intended to illustrate rather than limit the utility model, so all equivalent changes or modifications made according to the method described in the scope of the patent application of the utility model are included in the scope of the patent application of the utility model.

Claims (3)

1. an injection mold structure for double-colored product, is characterized in that: comprise monochromatic injection molding machine and removable injection moulding fort; Described monochromatic injection molding machine comprises rear mold, the molding cavity of up/down perforation is provided with in rear mold, in this molding cavity, be provided with rear cavity, and be provided with a movable core,return core core puller mold insert and surround described rear cavity, the top of this movable core,return core core puller mold insert is as the lower seal bottom surface of formed product; Described rear mold is fixed on rear pattern plate, and described rear pattern plate is installed with drive unit, and described drive unit is in transmission connection by movable core,return core core puller link assembly and described movable core,return core core puller mold insert, and described drive unit drives the lifting of described movable core,return core core puller mold insert; After first beer is shaping, described movable core,return core core puller mold insert declines and makes to there is space bottom described movable core,return core core puller mold insert and product, and described removable injection moulding fort carries out the second beer injection mo(u)lding to described space.

2. the injection mold structure of a kind of double-colored product according to claim 1, is characterized in that: the connecting rod that described movable core,return core core puller link assembly is comprised the first slide block be fixedly connected with drive unit output shaft, the second slide block leant by inclined-plane with this first slide block and is connected described second slide block and movable core,return core core puller mold insert.

3. the injection mold structure of a kind of double-colored product according to claim 2, be is characterized in that: described first slide block moves horizontally, is driven the lifting of described second slide block by inclined-plane.