CN106863715A - A kind of double-color mold - Google Patents

Abstract

The invention relates to a two-color mold, comprising a first front mold assembly, a second front mold assembly and a rear mold assembly, the first front mold assembly includes a first front template and a first front mold, and the second front mold assembly The parts include the second front template and the second front mold. The rear mold assembly includes the rear template, the rear mold and the row position slider. The core puller is installed on the row position slider. The outer surface of the row position slider is a slope. A driving block is installed on one side of the template, and elastic mechanisms are installed symmetrically on the left and right ends of the slope of the row slider. An oblique chute is formed between the elastic mechanism and the row slider. The pull-out block is clamped and slidably matched with the inclined chute, and the sliding block moves outwards with the pull-out block under the action of the elastic mechanism for core-pulling action. The invention has a reasonable and simple structural design and low cost, and the core-pulling action can be realized through normal mold opening action, the mold runs reliably, no hydraulic structure is needed for core-pulling, and the use and maintenance are very convenient.

Description

A two-color mold

technical field

The invention belongs to the technical field of injection molds, in particular to a two-color mold.

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, it is the first injection molding of hard rubber, and the second injection molding of soft rubber. The two-color mold with internal core-pulling structure needs to be rotated after the first injection molding product, and then the second injection molding is performed. The first molding product does not need to be ejected. Before the second injection molding is completed and the mold is opened, the first injection molding The product remains in place at all times.

At present, two-color molds mainly use a hydraulic structure for core pulling. The hydraulic core pulling mechanism is composed of a row slider and a hydraulic cylinder. It requires the cooperation of an injection molding machine. The structure is complex and the production cost is high; The cylinder is also relatively long, resulting in too large mold volume after assembly, which is inconvenient to install or remove the mold on the injection molding machine, and transportation is also inconvenient. In addition, the power of the hydraulic cylinder comes from the hydraulic pressure of the injection molding machine, and online debugging is very inconvenient.

Contents of the invention

The technical problem to be solved by the present invention is to provide a two-color mold with convenient use, low cost and reliable core-pulling action.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions to realize:

A two-color mold, including a first front mold assembly, a second front mold assembly and a rear mold assembly, the first front mold assembly includes a first front template and a first front mold installed on the first front template , the above-mentioned second front mold assembly includes a second front template and a second front mold installed on the second front template, and the above-mentioned rear mold assembly includes a rear template, a rear mold installed on the rear template and a row slider, Core pulling is installed on the row slider, the outer side of the row slider is a bevel, and the first front template side is equipped with a drive block that matches the row slider and drives the row slider to slide inward. Elastic mechanisms are installed symmetrically on the left and right ends of the inclined surface of the position slider, and an inclined chute is formed between the elastic mechanism and the row position slider. A pull-out block is installed on one side of the second front template, and the pull-off block is engaged with the inclined chute. Connected with sliding fit, the sliding block moves outwards under the action of the elastic mechanism when the pulling block moves upwards.

Preferably, the elastic mechanism includes an inner slide bar, an outer slide block and a spring connected to the outside of the inner slide bar, and a horizontal chute is provided on the inclined surface of the row position slider, and the inner slide bar is installed in the horizontal chute horizontally. Protruding parts are extended at both ends of the inclined surface of the row position slider, and the spring is arranged between the outer sliding block and the inner side of the protruding part.

Preferably, the above-mentioned inner sliding bar and outer sliding block are integrally structured.

Preferably, a slot for the inner slide bar is provided outside the front end of the above-mentioned inner slide bar, and a limit pressure block fixedly connected with the row slider is provided at the slot for the inner slide bar.

Preferably, the rear end of the above-mentioned inner sliding rod extends in the horizontal sliding groove corresponding to the protrusion.

Preferably, the inner side of the front end of the above-mentioned outer slider is provided with a slot for the outer slider, and the slot for the outer slider and the outer surface of the row slider form an oblique chute.

Preferably, the above-mentioned row position slider and the protruding part are integrally structured.

Preferably, the width of the drive block is smaller than the distance between the inner ends of the two inclined chute.

Preferably, the width of the bottom of the extraction block is slightly smaller than the distance between the outer ends of the two inclined chute, and the width of the upper and middle parts of the extraction block is greater than the distance between the outer ends of the two inclined chute.

Compared with the prior art, the present invention has the following remarkable effects:

The structure design of the two-color mold of the present invention is reasonable, simple, and low in cost. By setting the pull-out block and the elastic mechanism on the pull-out slider, the core-pulling action can be realized through the normal mold opening action, and the mold runs reliably without adopting a hydraulic structure. It is very convenient to use and maintain through core pulling.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the first front mold assembly and rear mold assembly of the present invention in a state to be clamped;

Fig. 2 is a schematic diagram of the internal structure of the mold assembly state of the first front mold assembly and the rear mold assembly of the present invention;

Fig. 3 is a schematic diagram of the internal structure of the first front mold assembly and the rear mold assembly of the present invention in the mold opening state;

Fig. 4 is a schematic diagram of the internal structure of the second front mold assembly and the rear mold assembly of the present invention in a state to be clamped;

Fig. 5 is a schematic diagram of the internal structure of the mold assembly state of the second front mold assembly and the rear mold assembly of the present invention;

Fig. 6 is a schematic diagram of the internal structure of the second front mold assembly and the rear mold assembly in the mold opening state of the present invention;

Fig. 7 is a three-dimensional structural schematic diagram of the installation state of the sliding block, core pulling and elastic mechanism of the present invention;

Fig. 8 is a schematic diagram of the three-dimensional structure of the inner slider and the outer slider of the present invention;

Fig. 9 is a schematic diagram of the internal structure of the driving block, the row slider and the elastic mechanism in a top view state of the present invention;

Fig. 10 is a schematic diagram of the internal structure of the withdrawing block, the sliding block and the elastic mechanism in a top view according to the present invention.

Description of drawings:

1 First front mold assembly 11 First front template 12 First front mold 13 Driving block 2 Second front mold assembly 21 Second front template 22 Second front mold 23 Extraction block 3 Rear mold assembly 31 Rear template 32 Rear mold 33 row slider 331 horizontal chute 332 protrusion 34 core puller 4 elastic mechanism 40 oblique chute 41 inner slider 411 inner slider gap 42 outer slider 43 spring 5 limit pressure block.

detailed description

In order to facilitate the understanding of those skilled in the art, the structural principle of the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings:

As shown in accompanying drawing 1-10, a kind of two-color mold comprises a first front mold assembly 1, a second front mold assembly 2 and a rear mold assembly 3, and the first front mold assembly 1 includes a first front template 11 And the first front mold 12 installed on the first front template 11, the second front mold assembly 2 includes the second front mold 21 and the second front mold 22 installed on the second front template 21, the rear mold assembly 3 Including a rear template 31, a rear mold 32 installed on the rear template 31 and a row slider 33, the row slider 33 is slidably connected with the rear template 31, and a core pulling 34 is installed on the row slider 33; Elastic mechanisms 4 are installed symmetrically on the left and right ends of the inclined surface of the slider 33 , and an inclined chute 40 is formed between the elastic mechanism 4 and the row slider 33 .

In this embodiment, the outer surface of the row position slider 33 is a bevel, and the driving block 13 matching the row position slider 33 is installed on one side of the first front template 11. Distance between them, as shown in accompanying drawing 1,9; When the first front mold assembly 1 was working, the driving block 13 moved down with the first front template 11, and during the clamping process of the first front mold 12 and the rear mold 32, The drive block 13 drives the row slider 33 to slide inward by cooperating with the slope of the row slider 33, that is, the drive block 13 directly acts on the slope of the row slider 33, and after the row slider 33 slides in place, the row slide Block 33 pushes down row slide block 33, then, injection molding machine injects glue, completes molding injection molding for the first time, as shown in accompanying drawing 2; The row slider 33 is only in surface contact, and the drive block 13 is not connected to the elastic mechanism 4. Therefore, the driver block 13 moves upward with the first front template 11, and the row slider 33 remains in place, as shown in Figure 3 shown.

As shown in accompanying drawings 7-8, the elastic mechanism 4 includes an inner slide bar 41, an outer slide block 42 and a spring 43 connected to the outside of the inner slide bar 41, and a horizontal slide groove 331 is provided on the inclined surface of the row position slide block 33. , the inner sliding rod 41 is horizontally installed in the horizontal chute 331; in order to ensure the smooth sliding of the inner sliding rod 41 in the horizontal chute 331, an inner sliding rod slot 411 is provided outside the front end of the inner sliding rod 41, and the inner sliding rod is not The groove 411 is provided with a limit pressure block 5, which is fixedly connected with the row slide block 33; Under the combined action of the block 5 and the protruding portion 332 , the inner slide bar 41 will not break away from the horizontal slide groove 331 in the direction of the slope of the row slide block 33 . Protruding portions 332 extend from both ends of the inclined surface of the row slider 33 , and the spring 43 is disposed between the outer sliding block 42 and the inner side of the protruding portion 332 . Here, the inner sliding rod 41 and the outer sliding block 42 have an integrated structure, and the protruding part 332 and the sliding block 33 are also in an integrated structure, which not only facilitates processing and manufacturing, but also ensures reliable connection between the elastic mechanism 4 and the sliding block 33 and ensure the reliability of the movement of the elastic mechanism 4; when the two outer sliders 42 are squeezed by an external force, the outer sliders 42 compress the spring 43, and the inner slider 41 and the outer slider 42 move outward together.

In this embodiment, an outer slider slot is provided on the inner side of the front end of the outer slider 42, and the outer slider slot and the outer surface of the row slider 33 form an oblique chute 40. Block 23, the installation position of extracting from block 23 is corresponding to the installation position of drive block 13, and the width of extracting from the bottom of block 23 is slightly smaller than the distance between the outer ends of the two inclined chute 40, and the width of extracting from the top and middle of block 23 is greater than that of the two oblique chute. The distance between the outer ends of the chute 40 is such that the pull-out block 23 can be smoothly inserted into the slant chute 40 , and the pull-off block 23 and the slant chute 40 are clamped and slidably matched.

When the rear mold 2 rotates for the second injection molding, as shown in Figure 4; the extraction block 23 moves downward with the second front template 21, and the second front mold 22 and the rear mold 32 are pulled out during the mold closing process. The lower part of the block 23 is first inserted into the inclined chute 40, and during the downward movement of the extracting block 23, the upper part of the extracting block 23 and the middle part of the extracting block 23 squeeze the outer slider 42, compress the spring, and the inner slider 41 and the outer slider 42 move outward together, and the elastic mechanism 4 gives the pull-out block 23 a kind of internal contraction force. After the pull-off block 23 goes down and reaches the position, the injection molding machine injects glue to complete the second molding injection, as shown in Figure 5; the second time After the injection molding is completed, the mold opening action is carried out, and the pull-out block 23 moves upwards with the second front template 21, and the pull-out block 23 drives the elastic mechanism 4 to move outward during the upward process, and the elastic mechanism 4 then drives the row slide block 33 to move outward. The core-pulling action is done outside, and after the block 23 is pulled out and goes up to the position, the core-pulling action of the row position slide block 33 is also then completed.

The invention has reasonable and simple structural design, low cost, no hydraulic structure for core pulling, and the core pulling action can be realized through normal mold opening action, the mold runs reliably, and the use and maintenance are very convenient.

The above-mentioned embodiment is a preferred solution for the realization of the present invention, and it is not exhaustive. Under the same concept, the present invention can also have other transformation forms. It should be noted that any obvious replacement All within the protection scope of the present invention.

Claims (9)

1. A two-color mold, comprising a first front mold assembly (1), a second front mold assembly (2) and a rear mold assembly (3), the first front mold assembly including a first front template ( 11) and the first front mold (12) installed on the first front template, the second front mold assembly includes the second front template (21) and the second front mold (22) installed on the second front template ), the rear mold assembly includes a rear template (31), a rear mold (32) installed on the rear template and a row slider (33), and a core puller (34) is installed on the row slider, and its characteristic It is that: the outer surface of the row slider is a slope, and a driving block (13) that matches the row slider and drives the row slider to slide inward is installed on one side of the first front template, and the row slider An elastic mechanism (4) is installed symmetrically on the left and right ends of the block slope, and an inclined chute (40) is formed between the elastic mechanism and the row slider, and a pull-off block (23) is installed on one side of the second front template. The pull-out block is clamped and slidably matched with the inclined chute, and the sliding block moves outwards under the action of the elastic mechanism when the pull-out block moves upwards to perform core-pulling action. 2. The two-color mold according to claim 1, characterized in that: the elastic mechanism includes an inner slider (41), an outer slider (42) connected to the outside of the inner slider and a spring (43). There is a horizontal chute (331) on the inclined surface of the position slider, and the inner sliding rod is installed horizontally in the horizontal chute, and the two ends of the inclined surface of the row slider are provided with protrusions (332), and the spring is arranged on the outer slider and the inner side of the protrusion. 3. The two-color mold according to claim 2, characterized in that: the inner sliding rod and the outer sliding block are integrally structured. 4. The two-color mold according to claim 2, characterized in that: an inner slide bar slot (411) is provided on the outer side of the front end of the inner slide bar, and a fixed connection with the row slider is provided at the slot of the inner slide bar. The limit pressing block (5). 5. The two-color mold according to claim 2, characterized in that: the rear end of the inner sliding rod extends in the horizontal sliding groove corresponding to the protrusion. 6. The two-color mold according to claim 2, characterized in that: the inner side of the front end of the outer slider is provided with an outer slider slot, and the outer slider slot and the outer side of the row slider form an oblique chute. 7. The two-color mold according to claim 2, characterized in that: the row slider and the protruding part are integrally formed. 8. The two-color mold according to claim 1, wherein the width of the driving block is smaller than the distance between the inner ends of the two inclined chute. 9. The two-color mold according to claim 1, characterized in that: the width of the bottom of the extraction block is slightly smaller than the distance between the outer ends of the two inclined chutes, and the width of the upper and middle parts of the extraction block is larger than the outer ends of the two inclined chutes distance between.