阅读说明：本技术 一种imd气缸式热压成型模具 (IMD cylinder type hot-pressing forming die ) 是由 陈康康 黄继军 于 2020-12-25 设计创作，主要内容包括：本发明公开了一种IMD气缸式热压成型模具,包括型腔和缸体,所述的型腔与缸体之间设置有膜片固定板,膜片固定板内开设有与缸体内的活塞腔连通的通孔,活塞腔内滑动设置有活塞,活塞上的活塞杆由远离型腔的一端伸出到缸体的外部；所述的缸体远离型腔的一端固定有第二固定板,活塞杆穿过第二固定板后,其末端固定有第一固定板,第二固定板与第一固定板之间平行设置；有益效果：实用,采用气缸的结构,通过压缩缸体内的空气,增大缸内气体压力,达到快速成型膜片的目的,大大的减少了膜片成型的时间,提高了产能和生产效率。(The invention discloses an IMD (in-mold decoration) cylinder type hot-press forming die, which comprises a cavity and a cylinder body, wherein a diaphragm fixing plate is arranged between the cavity and the cylinder body, a through hole communicated with a piston cavity in the cylinder body is formed in the diaphragm fixing plate, a piston is arranged in the piston cavity in a sliding manner, and a piston rod on the piston extends out of the cylinder body from one end far away from the cavity; a second fixing plate is fixed at one end of the cylinder body, which is far away from the cavity, after the piston rod passes through the second fixing plate, a first fixing plate is fixed at the tail end of the piston rod, and the second fixing plate and the first fixing plate are arranged in parallel; has the advantages that: the practicality adopts the structure of cylinder, through the air in the compression cylinder body, and gaseous pressure in the increase jar reaches the purpose of rapid prototyping diaphragm, great reduction the fashioned time of diaphragm, improved productivity and production efficiency.)

1. The utility model provides a IMD cylinder type hot briquetting mould, includes die cavity (1) and cylinder body (2), its characterized in that: a diaphragm fixing plate (3) is arranged between the cavity (1) and the cylinder body (2), a through hole (3-1) communicated with a piston cavity (2-1) in the cylinder body (2) is formed in the diaphragm fixing plate (3), a piston (2-2) is arranged in the piston cavity (2-1) in a sliding mode, and a piston rod (2-3) on the piston (2-2) extends out of the cylinder body (2) from one end far away from the cavity (1).

2. The IMD cylinder type hot press molding die of claim 1, wherein: one end of the cylinder body (2) far away from the cavity (1) is fixed with a second fixing plate (4), after the piston rod (2-3) penetrates through the second fixing plate (4), the tail end of the piston rod is fixed with a first fixing plate (5), and the second fixing plate (4) and the first fixing plate (5) are arranged in parallel.

3. The IMD cylinder hot-press molding die of claim 2, wherein: the cavity (1), the diaphragm fixing plate (3), the cylinder body (2), the second fixing plate (4) and the first fixing plate (5) are all provided with four pin holes (10), the hand-holding needles (9) penetrate through the four hand-holding needle holes (10), limiting step surfaces are arranged in the hand-holding needle holes (10) of the cylinder body (2) and the first fixing plate (5), the limiting step surfaces in the cylinder body (2) are arranged towards one side of the cavity (1), the limiting step surfaces in the first fixing plate (5) are arranged towards one side far away from the cavity (1), limiting bulges (9-1) at one ends of the hand-holding needles (9) are pressed on the limiting step surfaces in the first fixing plate (5), limiting blocks (8) at the other ends of the hand-holding needles (9) are pressed on the limiting step surfaces in the cylinder body (2), and the limiting blocks (8) are fixed at one ends of the hand-holding needles (9) far away from the limiting bulges (9-1).

4. The IMD cylinder type hot press molding die of claim 3, wherein: the outer part of the supporting needle (9) is sleeved with a spring (7), one end of the spring (7) is pressed against the inner side of the first fixing plate (5), and the other end of the spring (7) is pressed against the spring step top surface (10-1) in the supporting needle hole (10) of the cylinder body (2).

5. The IMD cylinder hot-press molding die of claim 4, wherein: one surface of the diaphragm fixing plate (3) close to the cylinder body (2) is concentrically provided with a sealing groove with the through hole (3-1), and a diaphragm fixing plate sealing ring (6) is pressed in the sealing groove.

6. The IMD cylinder type hot press molding die of claim 5, wherein: the piston (2-2) is sleeved with a plurality of piston sealing rings (2-9) which are in sealing contact with the piston cavity (2-1).

7. The IMD cylinder hot-press molding die of claim 6, wherein: a replaceable cavity insert (1-1) is arranged in the cavity (1), and the cavity insert (1-1) is positioned in the edge range of the through hole (3-1).

8. The IMD cylinder hot-press molding die of claim 7, wherein: one side of the membrane fixing plate (3) close to the cavity (1) is used for fixing the membrane (5), and the thickness of the membrane (5) is 0.25 mm.

9. The IMD cylinder hot-press molding mold of claim 8, wherein: one side of the membrane fixing plate (3) is hinged with one side of the cavity (1) by a hinge.

Technical Field

The invention relates to a hot-press forming die, in particular to an IMD (in-mold decoration) cylinder type hot-press forming die.

Background

In the existing IMD process, the film is formed by filling high-pressure gas to act on the surface of the film, and the heated and softened film is extruded out to be in a shape corresponding to the shape of a mould; the process time is too long to meet the yield requirement.

Disclosure of Invention

The invention aims to solve the technical problem of providing an IMD (in-mold decoration) cylinder type hot-pressing forming die aiming at the defects of the prior art.

In order to achieve the above object, the invention takes the following measures:

an IMD cylinder type hot-press forming die comprises a die cavity and a cylinder body, wherein a diaphragm fixing plate is arranged between the die cavity and the cylinder body, a through hole communicated with a piston cavity in the cylinder body is formed in the diaphragm fixing plate, a piston is arranged in the piston cavity in a sliding manner, and a piston rod on the piston extends out of the cylinder body from one end far away from the die cavity;

a second fixing plate is fixed at one end of the cylinder body, which is far away from the cavity, after the piston rod passes through the second fixing plate, a first fixing plate is fixed at the tail end of the piston rod, and the second fixing plate and the first fixing plate are arranged in parallel;

the die cavity, the diaphragm fixing plate, the cylinder body, the second fixing plate and the first fixing plate are all provided with four-position needle supporting holes, a needle supporting penetrates through the four needle supporting holes, limiting step surfaces are arranged in the needle supporting holes of the cylinder body and the first fixing plate respectively, the limiting step surfaces in the cylinder body are arranged towards one side of the die cavity, the limiting step surfaces in the first fixing plate are arranged towards one side far away from the die cavity, a limiting bulge at one end of the needle supporting is pressed against the limiting step surfaces in the first fixing plate, a limiting block at the other end of the needle supporting is pressed against the limiting step surfaces in the cylinder body, and the limiting blocks are fixed at one ends of the needle supporting far away from the limiting bulges;

a spring is sleeved outside the supporting needle, one end of the spring is pressed against the inner side of the first fixing plate, and the other end of the spring is pressed against the top surface of a spring step in the supporting needle hole of the cylinder body;

a sealing groove is concentrically arranged on one surface of the diaphragm fixing plate close to the cylinder body and the through hole, and a diaphragm fixing plate sealing ring is pressed in the sealing groove;

a plurality of piston sealing rings in sealing contact with the piston cavity are sleeved on the piston;

a replaceable cavity insert is arranged in the cavity and is positioned in the edge range of the through hole;

the diaphragm is fixed on one side of the diaphragm fixing plate close to the cavity, and the thickness of the diaphragm is 0.25 mm;

one side of the membrane fixing plate is hinged with one side of the cavity by a hinge.

The invention has the beneficial effects that: the practicality, low in production cost, novel structure adopts the structure of cylinder, through the internal air of compression cylinder, increases the gaseous pressure in the jar, reaches the purpose of rapid prototyping diaphragm, great reduction the fashioned time of diaphragm, improved productivity and production efficiency.

Drawings

Fig. 1 is a schematic view of the external structure of the present invention.

Fig. 2 is a schematic top plan view of the present invention.

FIG. 3 is a schematic view of the structure of the plane A-A of FIG. 2 according to the present invention.

Detailed Description

An IMD (in-mold decoration) cylinder type hot-press forming die comprises a die cavity 1 and a cylinder body 2, wherein a diaphragm fixing plate 3 is arranged between the die cavity 1 and the cylinder body 2, a through hole 3-1 communicated with a piston cavity 2-1 in the cylinder body 2 is formed in the diaphragm fixing plate 3, a piston 2-2 is arranged in the piston cavity 2-1 in a sliding mode, and a piston rod 2-3 on the piston 2-2 extends out of the cylinder body 2 from one end, far away from the die cavity 1.

A second fixing plate 4 is fixed at one end, far away from the cavity 1, of the cylinder body 2, after the piston rod 2-3 penetrates through the second fixing plate 4, a first fixing plate 5 is fixed at the tail end of the piston rod, and the second fixing plate 4 and the first fixing plate 5 are arranged in parallel.

The die cavity 1, the diaphragm fixing plate 3, the cylinder body 2, the second fixing plate 4 and the first fixing plate 5 are all provided with four-position needle supporting holes 10, the four needle supporting holes 10 are all penetrated by a needle supporting 9, the cylinder body 2 and the needle supporting holes 10 of the first fixing plate 5 are all provided with limiting step surfaces, the limiting step surfaces in the cylinder body 2 are arranged towards one side of the die cavity 1, the limiting step surfaces in the first fixing plate 5 are arranged towards one side far away from the die cavity 1, a limiting bulge 9-1 at one end of the needle supporting 9 is pressed against the limiting step surfaces in the first fixing plate 5, a limiting block 8 at the other end of the needle supporting 9 is pressed against the limiting step surfaces in the cylinder body 2, and the limiting block 8 is fixed at one end, far away from the limiting bulge 9-1, of the needle supporting.

The outer part of the supporting needle 9 is sleeved with a spring 7, one end of the spring 7 is pressed against the inner side of the first fixing plate 5, and the other end of the spring 7 is pressed against the spring step top surface 10-1 in the supporting needle hole 10 of the cylinder body 2.

One surface of the diaphragm fixing plate 3 close to the cylinder body 2 is concentrically provided with a sealing groove with the through hole 3-1, and a diaphragm fixing plate sealing ring 6 is pressed in the sealing groove.

And a plurality of piston sealing rings 2-9 which are in sealing contact with the piston cavity 2-1 are sleeved on the piston 2-2.

A replaceable cavity insert 1-1 is arranged in the cavity 1, and the cavity insert 1-1 is positioned in the edge range of the through hole 3-1.

And a diaphragm 5 is fixed on one side of the diaphragm fixing plate 3 close to the cavity 1, and the thickness of the diaphragm 5 is 0.25 mm.

One side of the membrane fixing plate 3 is hinged with one side of the cavity 1 by a hinge.

As shown in fig. 1-3, when in use:

1. fixing the die: the cavity 1 (cavity plate) and the first fixing plate 5 are fixed to the lower table and the upper table of the press machine with pressing plates, respectively.

2. The operation steps of the die are as follows:

(1) after the die is fixedly arranged on the punching machine, the punching machine executes a die opening instruction, and the die is opened;

(2) opening the membrane fixing plate 3 (one side of the membrane fixing plate 3 is hinged with one side of the cavity 1 by a hinge);

(3) a diaphragm 5 is placed between the diaphragm fixing plate 3 and the cavity 1, and the diaphragm fixing plate 3 is closed (the diaphragm fixing plate 3 is used for pressing the diaphragm 5 to prevent the diaphragm 5 from tilting when being baked and softened);

(4) pressing a procedure starting button, sliding out the baking plate, and baking and softening the membrane, which is the same as the prior art;

(5) after baking is finished, closing the die (the piston 2-2 compresses air in a piston cavity 2-1 in the cylinder body 2, increasing gas pressure, extruding the diaphragm 5 to a cavity insert 1-1 in the cavity 1, and extruding a corresponding product shape on the cavity insert 1-1 on the diaphragm 5);

(6) opening the die, and restoring the relative position of the cylinder body 2 and the piston 2-2 to an initial state under the action of the spring 7;

(7) and after the formed diaphragm 5 is taken out, the production can be continued, and the next working procedure circulation is carried out.

Compared with the original forming process, the forming process has the advantages that the time is shortened by nearly 90s in the whole process, the structure of the air cylinder is adopted, the air pressure in the air cylinder is increased by compressing the air in the air cylinder, the purpose of quickly forming the diaphragm is achieved, the forming time of the diaphragm is greatly shortened, and the productivity and the production efficiency are improved.