CN206217063U - An Insert Rotating Mechanism for Two-Color Mold - Google Patents

Abstract

The utility model relates to an insert rotating mechanism for a two-color mold, comprising an A plate, a B plate, a front mold core and a rear mold core, wherein the front mold core is fixedly mounted on the A plate, the rear mold core is fixedly mounted on the B plate, and a product is formed between the front mold core and the rear mold core, and further comprising a rotating insert, a rotating shaft, a round sleeve seat, a gear, a rack, an oil cylinder and a bottom plate, wherein the rotating insert is mounted inside the rear mold core, the front end of the rotating shaft passes through the rear mold core and is fixedly connected to the rotating insert, the rotating shaft passes through the bottom plate, a round sleeve seat is fitted on the outer periphery below the rotating shaft, the round sleeve seat rotates synchronously with the rotating shaft, a gear is fitted on the outer periphery of the round sleeve seat, the gear rotates synchronously with the round sleeve seat, the gear and the rack mesh with each other, the rack is movably mounted inside the bottom plate, one end of the rack is connected to the piston rod of the oil cylinder, and the oil cylinder is fixedly mounted on the side of the bottom plate.

Description

An Insert Rotating Mechanism for Two-Color Mold

technical field

The utility model relates to a two-color mold, in particular to an insert rotating mechanism for a two-color mold.

Background technique

In the field of plastic molds, common two-color products are injection molded through two-color molds or secondary molding. Two-color mold is a kind of mold that injects two plastic materials on the same injection molding machine and molds them twice, but the product is only released once. When using a two-color mold, it needs to be equipped with a special double-injector and a rotating function. The injection molding machine can be normally injected and demolded, which will limit the use range of the two-color mold. Many precision two-color products cannot be made by the two-color mold, and the use of special equipment will increase the production cost. Therefore, some two-color products are made by the secondary molding process. The secondary molding means that the two plastic materials are not necessarily injected on the same injection molding machine, but are molded in two parts; Put it into another set of molds for the second injection molding. Since this molding process is completed by two sets of molds and two injection molding machines, the molding temperature and cooling time of the product are not easy to control, cracks will appear on the product surface, the appearance quality is not good, there are many defective products, and manual labor is required. Replacement of products, low production efficiency, low degree of automation, can not meet the needs of the market.

From the above analysis, it can be seen that whether two-color molds or secondary molding are used, they all have certain shortcomings. However, because the products produced by two-color molds have smooth surfaces, beautiful appearances, and easy color changes, most manufacturers on the market will use them. Two-color molds are used to manufacture two-color products. For this reason, it is particularly urgent to make certain improvements on the structural basis of the existing two-color mold so that it can be used normally without being equipped with a special double-injection nozzle and an injection molding machine with a rotating function.

Utility model content

In order to solve the above problems, the utility model provides an insert rotating mechanism for a two-color mold, and the specific technical scheme is as follows:

An insert rotating mechanism for two-color molds, including A plate, B plate, front mold core and rear mold core, the front mold core is fixedly installed on A plate, the rear mold core is fixedly installed on B plate, and the product Forming between mold cores, it also includes rotating inserts, rotating shafts, ring seats, gears, racks, oil cylinders and bottom plates. Pass through the bottom plate, the outer periphery of the rotating shaft is fitted with a circular sleeve seat, the circular sleeve seat and the rotating shaft are rotated synchronously, the outer periphery of the circular sleeve seat is fitted with gears, the gear and the circular sleeve seat are rotated synchronously, the gear and the rack are meshed with each other, and the rack is movably installed on the bottom plate Inside, one end of the rack is connected to the piston rod of the oil cylinder, and the oil cylinder is fixedly installed on the side of the bottom plate.

Preferably, two racks and two oil cylinders are respectively provided, and the two racks are respectively engaged with the gears and installed inside the bottom plate. One end of the two racks is connected to the piston rod of one oil cylinder respectively, and the two oil cylinders Symmetrically installed on the left and right sides of the bottom plate.

Preferably, two convex lines are provided on the inner peripheral side of the circular sleeve seat, and a groove is provided on the rotating shaft, and the circular sleeve seat realizes synchronous rotation with the rotating shaft through the cooperation of the convex lines and the grooves.

Preferably, a key is provided on the outer circumference of the ring seat, and a keyway is provided on the gear, and the ring seat can rotate synchronously with the gear through the cooperation of the key and the keyway.

Preferably, the rear mold core is provided with a positioning column for positioning the rotary insert.

Preferably, a rack wear block is provided under the rack.

Preferably, the bottom plate is provided with rack positioning blocks.

Beneficial effects of the utility model: when the insert rotating mechanism of the utility model is adopted, the oil cylinders on both sides drive the rack to move forward, the rack drives the gear to rotate, the gear drives the rotating shaft to rotate through the ring seat, and the rotating shaft drives the rotating insert to rotate 180° °, the rotating insert takes the product through the top rod of the injection molding machine, so that the transposition of the injection molding product is realized. The structure is simple and reasonable, and there is no need to equip a special double-injection nozzle and an injection molding machine with a rotating function, which expands the scope of use and saves production cost.

Description of drawings

Fig. 1 is a perspective view of the utility model;

Fig. 2 is an exploded view of the utility model;

Fig. 3 is the installation sketch map of B plate of the present utility model, rear die core, rotary insert;

Fig. 4 is a perspective view of the rotating shaft and the ring seat of the utility model.

detailed description

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further:

As shown in Figures 1 to 3, an insert rotation mechanism for two-color molds, including A plate, B plate 1, front mold core and rear mold core 2, the front mold core is fixed on the A plate, and the rear mold core 2 is fixed Installed on board B 1, the product is formed between the front mold core and the rear mold core 2, which also includes a rotating insert 3, a rotating shaft 4, a circular sleeve seat 5, a gear 6, a rack 7, an oil cylinder 8 and a bottom plate 9, and the rear mold There is a positioning column inside the core 2, and the rotating insert 3 is embedded into the inside of the rear mold core 2 through the positioning column. The front end of the rotating shaft 4 passes through the rear mold core 2 and is fixedly connected to the rotating insert 3. Set the ring seat 5, the ring seat 5 rotates synchronously with the rotating shaft 4, the outer circumference of the ring seat 5 measures the set gear 6, the gear 6 and the ring seat 5 rotate synchronously, the gear 6 and the rack 7 mesh with each other, and the rack 7 is movable Inside the base plate 9 , one end of the rack 7 is connected to the piston rod of the oil cylinder 8 , and the oil cylinder 8 is fixedly installed on the side of the base plate 9 .

Specifically, two racks 7 and two cylinders 8 are respectively provided, and the two racks 7 are engaged with the gear 6 respectively and installed inside the bottom plate 9. One end of the two racks 7 is respectively connected to the piston rod of one oil cylinder 8, The two oil cylinders 8 are symmetrically installed on the left and right sides of the bottom plate 9 through the fixing plate 11 . The piston rods of the two oil cylinders 8 stretch out, driving the two racks 7 to move inwardly, thereby driving the gear 6 to rotate, the movement is stable, and the torque force of the driving gear 6 is large enough to ensure the rotation of the gear.

As shown in Figure 4, two convex lines 51 are provided on the inner peripheral side of the circular sleeve seat 5, and the rotating shaft 4 is provided with a groove 41. When the circular sleeve seat 5 rotates, through the cooperation of the convex lines 51 and the grooves 41, the rotating shaft 4 rotates synchronously with the ring seat 5. The protrusion 51 and the groove 41 are slidably matched, and the rotating shaft 4 can move up and down along the track of the protrusion 51 . Simultaneously, described circular sleeve seat 5 is provided with key, and gear 6 is provided with keyway, and when gear rotates, through the cooperation of key and keyway, circular sleeve seat 5 can rotate synchronously with gear 6.

In order to ensure the movement track of the rack 7, a rack positioning block 10 is installed on the bottom 9, the middle of the positioning block 10 is provided with an opening for the rack 7 to pass through, and one end of the rack 7 is connected to the piston rod of the oil cylinder; the other end passes through the positioning block 10. In addition, below the rack 7 , a rack wear-resistant block 12 is arranged in the movement track of the rack 7 , and the rack wear-resistant block 12 is made of wear-resistant material to protect the rack 7 .

The working principle of the utility model: after the first mold closing of the two-color mold, the front and rear molds are opened, the rotating shaft moves upward, and the rotating insert is pushed out, and the rotating insert is ejected from the inside of the mold with the product, and the oil cylinder drives the rack Move forward, the rack drives the gear to rotate, the gear drives the ring seat to rotate, and the ring seat drives the rotating insert to rotate 180 degrees, changing the orientation of the product, the rotating insert moves down, and the mold is closed again. The function of changing the position of the product and closing the mold.

In a word, the mold of the present utility model has no limitations in selecting injection molding machines, does not need a special injection molding machine, and can be produced by any ordinary injection molding machine. It only needs to use the auxiliary nozzle and adjust the signal source of the injection molding machine. Afterwards, the production of ordinary molds can be resumed, which solves the shortcomings caused by secondary molding, improves product quality, reduces labor costs, shortens the injection molding cycle, and improves production efficiency.

The above content is a further detailed description of the utility model in conjunction with specific preferred embodiments. It cannot be determined that the specific implementation of the utility model is only limited to these descriptions. Under the premise of the concept of the utility model, some simple deduction or replacement can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (7)

1. a kind of mold insert rotating mechanism for double-color mold, including A plates, B plates（1）, front cavity and rear cavity（2）, front cavity It is fixedly mounted on A plates, rear cavity（2）It is fixedly mounted on B plates（1）, product is in front cavity and rear cavity（2）Between be molded, it is special Levy and be：It also includes rotation mold insert（3）, rotating shaft（4）, circle block set（5）, gear（6）, tooth bar（7）, oil cylinder（8）And base plate （9）, rotate mold insert（3）It is installed on rear cavity（2）Inside, rotating shaft（4）Front end passes through rear cavity（2）It is fixedly connected rotation mold insert （3）, rotating shaft（4）Through base plate（9）, rotating shaft（4）Suit circle block set is surveyed in lower section periphery（5）, circle block set（5）With rotating shaft（4）It is synchronous Rotation, circle block set（5）Set gear is surveyed in periphery（6）, gear（6）With circle block set（5）Synchronous rotary, gear（6）With tooth bar（7）Phase Mutually engagement, tooth bar（7）It is movably arranged on base plate（9）Inside, tooth bar（7）One end connects oil cylinder（8）Piston rod, oil cylinder（8）Gu Dingan County is mounted in base plate（9）Avris.

2. a kind of mold insert rotating mechanism for double-color mold according to claim 1, it is characterised in that：Described tooth bar （7）And oil cylinder（8）It has been respectively provided with two, two tooth bars（7）Respectively with gear（6）Engage and base plate is arranged on to this（9）Inside, Two tooth bars（7）One end connects 1 oil cylinder respectively（8）Piston rod, two oil cylinders（8）It is symmetrically mounted on base plate（9）Left and right two Side.

3. a kind of mold insert rotating mechanism for double-color mold according to claim 1, it is characterised in that：The round block set （5）Inner circumferential side is provided with two raised lines（51）, rotating shaft（4）It is provided with groove（41）, circle block set（5）By raised line（51）And groove（41） Cooperation realization and rotating shaft（4）Synchronous rotary.

4. a kind of mold insert rotating mechanism for double-color mold according to claim 1, it is characterised in that：The round block set （5）Periphery is surveyed and is provided with key, gear（6）It is provided with keyway, circle block set（5）Cooperation realization and gear by key and keyway（6）It is synchronous Rotation.

5. a kind of mold insert rotating mechanism for double-color mold according to claim 1, it is characterised in that：The rear cavity （2）It is provided with position rotating mold insert（3）Locating dowel.

6. a kind of mold insert rotating mechanism for double-color mold according to claim 1, it is characterised in that：The tooth bar （7）Lower section is provided with tooth bar wear-resistant block（12）.

7. a kind of mold insert rotating mechanism for double-color mold according to claim 1, it is characterised in that：The base plate （9）It is provided with tooth bar locating piece 10.