KR100776026B1 - A mould assembly - Google Patents

Abstract

A mould assembly is provided to prevent products from attaching to a core of a first templet by removing an attachment preventive plate from a second templet after the first templet is separated from the products. A mould assembly comprises a fixed part plate(30), a first templet(32), an operating part plate(50), a second templet(56), an attachment preventive plate(40), and a locking block(80). The fixed part plate is installed to a fixed part of a molding machine. The first templet is installed to the fixed part plate and provided with a first shape core(38). The first shape core has a shape corresponding to a shape of the product(M). The operating part plate is installed to an operating part of the molding machine. The second templet is installed to the operating part plate and has a second shape core(62) at the part facing the first shape core. The second shape core makes a space corresponding to the shape of the product by cooperating with the first shape core. The attachment preventive plate is attached to the operating part plate at the beginning of relative movement of the fixed part plate and the operating part plate by an interlocking unit(44) installed to the fixed part plate. The attachment preventive plate is separated from the operating part plate after the first shape core is separated from the product. The locking block fastens the attachment preventive plate to the second templet or separates the attachment preventive plate from the second templet according to the relative movement of the operating part plate and the fixed part plate.

Description

Mold assembly

1 is a cross-sectional view showing the configuration of a mold assembly according to the prior art.

2 is a cross-sectional view showing the configuration of a preferred embodiment of a mold assembly according to the present invention.

3A to 3C are a plan view, a side view, and a rear view showing the configuration of a block guard constituting an embodiment of the present invention.

Figures 4a and 4b is a front view and a side view showing the configuration of the locking block constituting an embodiment of the present invention.

5 and 6 is an operating state showing that the embodiment of the present invention is operated.

Explanation of symbols on the main parts of the drawings

30: fixed side plate 32: first mold plate

34: First Cavity 36: First Main Core

38: first shape core 40: adhesion preventing plate

42: core hole 44: linkage

46: hanger 48: hanger

50: movable side plate 52: spacer block

54: base plate 56: second edition

58: Second Cavity 60: Second Main Core

62: second shape core 64: eject plate

66: Eject Pin 70: Block Guard

76: spring bolt 80: locking block

82: interlocking jaw 84: hooking jaw

The present invention relates to a mold assembly, and more particularly, to a mold assembly for repeatedly producing a synthetic resin product having the same shape.

The mold assembly is injection molding a product having a specific shape using a synthetic resin as a material. Such a mold assembly is provided with a core having a shape corresponding to that of the product to repeatedly produce a product of the same shape.

1 shows a schematic cross-sectional view of a mold assembly according to the prior art. According to this, one side of the mold assembly is provided with a fixed side plate (1) mounted on the stationary side of the molding machine, the movable side plate (2) mounted on the movable side is provided on the opposite side. An injection hole 3 is formed through one side of the fixed side plate 1. The injection hole 3 is a portion to which a synthetic resin, which is a material of a product, is supplied. A locating ring 5 is provided which serves as a guide for mounting the fixed side plate 1 surrounding the injection hole 3 on the fixed side of a molding machine (not shown).

One surface of the fixed side plate 1 is provided with a first mold plate 7. One side of the first mold plate 7 is formed in a shape corresponding to a part of the outer surface of the product (M) made from the mold assembly or is provided with a separate core. The second mold plate 9 is provided on the movable side plate 2 side so as to be detachable on one surface of the first mold plate 7. The second template 9 is provided with a core 9 'for cooperating with the first template 7 to form a single product M shape. The second mold 9 is provided with a guide pin 10 protruding toward the first mold 7. The guide pin 10 is inserted into a through hole formed at a corresponding position of the first mold 7 so that the first mold 7 and the second mold 9 are accurately coupled when the mold assembly is operated. Do it.

A supporting plate 11 is provided on the opposite side of the second plate 9 to face the first plate 7. The other surface of the support plate 11 is provided with a spacer block 13 is seated on one surface of the movable side plate (2). At least two spacer blocks 13 form a moving space 14 between the support plate 11 and the movable side plate 2.

In the movable space 14, an eject plate 15 provided to face one surface of the movable side plate 2 is installed to be movable. The eject pin 15 is installed upright on the eject plate 15. The eject plate 15 is overlapped with two sheets, one of which passes through the eject pin 16 and the other end supports the end of the eject pin 16. The eject pin 16 is to allow the product (M) made while operating with the eject plate 15 to be separated from the core (9 ').

A plurality of eject pins 16 may be used, which generally have their front end in direct contact with the product M. FIG. In the figure, reference numeral 2 'is a through part formed in the movable side plate 2 and through which the structure for driving the eject plate 15 passes.

In the mold assembly according to the related art having such a configuration, when the material is supplied through the injection hole 3 and the product M is formed in the core between the first mold 7 and the second mold 9, The moving side of the molding machine is operated to separate the first plate 7 and the second plate 9 to drive the eject plate 15 through the penetrating portion 2 'of the movable side plate 2. By driving the eject plate 15, the eject pin 16 pushes the product M so that the product M is separated from the core 9 ′ of the second template 9.

However, the mold assembly according to the prior art as described above has the following problems.

In general, in the case where the first template 7 and the second template 9 are separated, it is common that the product M is attached to the core 9 'on the side of the second template 9, and this is the eject pin 16 To be separated. However, depending on the structure of the product M or the material for forming the product M, the product M is separated from the first plate 7 and the second plate 9 by the first plate 7. It happens to stick to the side. In this case, since the worker must separate the product (M) from the second template 9 one by one, there is a problem that workability is greatly reduced.

In addition, depending on the shape of the product (M), a problem may arise that the appearance is deformed or damaged in the process of the operator separates what is attached to the first mold 7 side.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, so that the finished product in the injection mold assembly is separated by the eject pin at the core of the movable side.

According to a feature of the present invention for achieving the object as described above, the present invention is provided with a fixed side plate installed on the fixed side of the molding machine, the first shape core having a shape corresponding to the shape of the product on one surface is fixed A first mold plate provided on the side plate, a movable side plate installed on the movable side of the molding machine, and a part provided on the movable side plate and corresponding to the first shape core, cooperate with the first shape core to cope with the shape of the product. The first shape core is in close contact with the movable side plate at the beginning of the relative movement of the fixed side plate and the movable side plate by a second mold plate having a second shape core for creating a space to be formed and an interlocking mechanism provided on the fixed side plate side. When the anti-stick plate is fastened to the second mold plate according to the relative movement between the movable side plate and the fixed side plate after being separated from the product and separated from the movable side plate side. Or it is configured to include the locking block to release.

The linkage has a rear end fixed to the fixed side plate or the first mold plate, and protrudes a predetermined distance through the anti-stick plate.

The tip of the linkage is provided with a hook end having a larger diameter than other portions of the linkage so that the attachment preventing plate is hooked, the hook end is a nut fixed by a bolt fastened to the tip of the linkage.

The second plate is formed with a seating hole in which the tip of the linkage is positioned when the anti-stick plate is in close contact with the second plate.

The second mold plate or the support plate provided on the movable side plate is further provided with a block guard in which the locking block is rotatably installed about the rotation axis, and the locking block rotates in a direction that is fastened to the attachment preventing plate by a spring. Is supported.

An interlocking jaw is formed at the front end of the locking block so that the locking block rotates while overcoming the elastic force of the spring during the relative movement between the fixed side plate and the movable side plate, interlocked with an interlock installed on the fixed side plate side. Hanger jaws hooked to the hanger provided on the plate are formed at both ends.

The spring bolt is fastened through the block guard and the locking block, and the spring bolt guides the position where the spring is installed through the center of the spring between the block guard and the locking block.

A spacer block is installed between the movable side plate and the support plate, and an eject plate provided with an eject pin for separating a product attached to the second shape core is provided in the space formed between the movable side plate and the support plate by the spacer block.

According to the present invention having such a configuration, when the mold is opened in the mold assembly, the product is always attached to the core on the movable side, the operation reliability of the injection mold assembly is increased, and the product is made as designed and discharged from the mold assembly. There is an advantage of increasing productivity.

Hereinafter, a preferred embodiment of the mold assembly according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a cross-sectional view showing the configuration of a preferred embodiment of the mold assembly according to the present invention, Figures 3a to 3c is a plan view, a side view and a rear view showing the configuration of the block guard constituting an embodiment of the present invention, Figures 4a and Figure 4B is a front view and a side view showing the configuration of the locking block constituting the embodiment of the present invention.

As shown in the figure, the fixed side plate 30 is installed on the fixed side of the molding machine. The fixed side plate 30 has a plate shape having a predetermined area, and the first mold plate 32 is installed on one surface thereof. Description of the structure in which the first mold plate 32 and the fixed side plate 30 are coupled to each other is omitted. The first cavity 34 is formed in the first template 32. The first cavity 34 is formed to penetrate through the first mold plate 32, and the fixed side plate 30 forms an inner surface bottom thereof.

The first main core 36 is installed inside the first cavity 34. The first main core 36 is provided with a first shape core 38. The first shape core 38 is actually a part which forms part of the shape of the product M. As shown in FIG. The first main core 36 and the first shape core 38 may be formed of a plurality of products forming one product (M). The first cavity 34 is provided as many as the number of products (M) are made at one time.

A linkage 39 is provided on the side surface of the first mold plate 32. The linkage 39 has a curved shape with its surface protruding convexly. The linkage 39 is a portion that drives the locking block 80 to be described below when the first template 32 is moved relative to the second template 66 to be described below.

An anti-stick plate 40 is provided on the surface of the first mold plate 32. The anti-stick plate 40 is to prevent from being attached to the first shape core 38 on the side of the first plate 32 when the product (M) is taken out. One side of the anti-stick plate 40 may form a part of the shape of the product. That is, part of the anti-stick plate 40 forms a part of the space for forming the product (M). In this embodiment, the core through hole 42 is formed in the anti-stick plate 40, the first shape core 38 passes through the core through hole 42.

On the other hand, the interlock 44 is installed through the fixed side plate 30, the first mold plate 32 and the anti-stick plate 40. The linkage 44 is fixed to the fixed side plate 30 or the first mold plate 32 and penetrates the anti-stick plate 40. A hook end 46 is formed at the tip of the interlock 44 at a position passing through the anti-stick plate 40. The hook end 46 is relatively larger in diameter than other portions of the linkage 44. For reference, the hook end 46 may be a nut. That is, the nut is fixed to the tip of the linkage 44 by a bolt. Such a linkage 44 is provided with a plurality, the number may vary depending on the weight or shape of the anti-stick plate 40.

The hooking tool 48 is installed on one side of the anti-sticking plate 40, that is, the surface corresponding to the surface on which the interlock 39 of the first mold plate 32 is installed. The hook tool 48 is a part of which the hook jaw 84 of the locking block 80 to be described below is hooked. The hook 48 is to be made and mounted separately from the attachment preventing plate 40 in the present embodiment. However, it may be integrated into the anti-stick plate 40.

The movable side plate 50 is installed on the movable side of the molding machine. The movable side plate 50 also has a plate shape having an area corresponding to the fixed side plate 30. The movable side plate 50 is provided with a support plate 54 on the spacer block 52, the second plate to face the first plate 32, more precisely the anti-stick plate 40 on the support plate 54. 56 is installed. The first type plate 32 and the second type plate 56 are in close contact with each other when the product is molded, and are separated when the molded product M is taken out. This is done by moving the movable side of the molding machine relative to the stationary side.

A second cavity 58 is formed in the second template 56. The second cavity 58 is formed with an area corresponding substantially to the position corresponding to the first cavity 34. The second main core 60 is installed in the second cavity 58. The second main core 60 has a size corresponding to that of the first main core 36 and is provided at a position corresponding to the first main core 36.

The second mold 56 is provided with a seating hole 59 in which the tip of the linkage 44 is selectively positioned. When the first plate 32 (actually the anti-stick plate 40) and the second plate 56 are adjacent to each other, the end of the linkage 44 is positioned in the seating hole 59.

A second shape core 62 is installed through the second main core 60. As described above, the second shape core 62 cooperates with the first shape core 38 to form a space into which material for forming a product is injected. Reference numeral 64 is an eject plate, and 66 is an eject pin.

The block guard 70 is fastened by a mounting bolt 70 'on at least one side of the support plate 54 or the second mold plate 56. The block guard 70 is provided with end plates 74 orthogonal to both ends of the center plate 72 facing the side of the support plate 54 or the second mold plate 56. The mounting bolt 70 ′ is fastened to the support plate 54 or the second mold plate 56 by passing through the end plate 74.

The center plate 72 is perforated with a spring bolt hole 72 ', as shown in FIG. 3B. The spring bolt 76 is fastened to the support plate 54 or the second die plate 56 by passing through the spring bolt hole 72 '. The spring bolt 76 also penetrates the locking block 80 to be described below. Reference numeral 77 is a washer.

Rotating shaft holes 74 'are formed in the end plates 74 on both sides, and both ends of the rotating shaft 80' are installed in the rotating shaft holes 74 'and are locked to rotate about the rotating shaft 80'. Block 80 is installed. The locking block 80 is installed in a space formed between the block guard 70, the support plate 54, and the second mold plate 56.

The locking block 80 is well illustrated in Figs. 4A and 4B. The locking block 80 is formed of a shaft hole 81 through which one end of the rotating shaft 80 'is inserted in a plate shape of a substantially flat hexahedron.

Interlocking jaw 82 is formed to protrude from the opposite end provided with the shaft hole (81). The interlocking jaw 82 is to be interlocked with the linkage 39, the surface is formed of a convex curved surface. The interlocking jaw 82 is formed long along the front end of the locking block 80.

Hanging jaw 84 is provided at both ends of the locking block 80. The hanging jaw 84 is hooked on the hook 48 to serve to keep the attachment preventing plate 40 in close contact with the second mold plate 56. The spring bolt hole 86 is drilled through the locking block 80. The spring bolt hole 86 is formed at a position corresponding to the spring bolt hole 72 ′ of the block guard 70.

The locking block 80 is supported by a spring 88 installed between the block guard 70. That is, one end of the spring 88 is supported by the block guide 70, the other end of the spring 88 is supported by the locking block (80). In addition, the spring 88 is the spring bolt 76 is to pass through the center. As such, the spring bolt 76 penetrates the center of the spring 88 so that the installation state of the spring 88 is not disturbed by external force. The spring 88 rotates the locking block 80 in the direction in which the hooking jaw 84 is hooked to the hook hole 48 about the rotation shaft 80 '.

Hereinafter, the operation of the mold assembly according to the present invention having the configuration as described above in detail.

5 and 6 illustrate a process of separating the product in the mold assembly of the embodiment of the present invention. The molten material is supplied and hardened in the space formed by combining the mold assembly. Once the product M is hardened to some extent, the movable side plate 50 is moved relative to the fixed side plate 30 to be separated.

When the movable side plate 50 moves away from the fixed side plate 30, first, the anti-stick plate 40 is attached to the second plate 56, and the first plate 32 This is attached to the anti-stick plate 40. At this time, the anti-stick plate 40 is attached to the second mold 56, the hanger 84 of the locking block 80 is the hanger 48 of the anti-stick plate 40 Because it is on. Therefore, even if the fixed side plate 30 is moved relative to the movable side plate 50, the anti-stick plate 40 is still attached to the second mold plate 56.

This state proceeds until the hook end 46 of the linkage 44 is hooked to the bottom surface of the attachment preventing plate 40. Once the hook end 46 is hooked to the bottom surface of the anti-stick plate 40 and the relative movement of the fixed side plate 30 and the movable side plate 50 continues, the anti-stick plate 40 is It is relatively movable with the movable side plate 50 integrally with the fixed side plate 30. In FIG. 5, a state where the hook end 46 is engaged with the anti-stick plate 40 is shown. In this state, the first shape core 38 opens the core through-hole 42 of the anti-stick plate 40. It's already out.

Of course, the locking block 80 installed on the support plate 54 or the second mold plate 56 is relatively moved in a direction away from the fixed side plate 30 side, so that the interlocking jaw 82 is the linkage mechanism. Guided to (39), the locking block 80 is rotated about the rotating shaft (80 ') in the direction in which the catching tool 48 is released from the hanger (84). This is achieved until the hook end 46 is hooked to the attachment preventing plate 40. In this way, the state in which the locking step 84 of the locking block 80 is released from the hook 48 is illustrated.

In this state, while the relative movement is made to move away from the movable side plate 50 and the fixed side plate 30, the eject pin 66 is operated to move the product M to the second shape core 62 side. Separate from. This state is shown in FIG.

The scope of the present invention is not limited to the embodiments described above, but is defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self-evident.

In the mold assembly according to the present invention as described in detail above, the following effects can be obtained.

First, in the present invention, the anti-stick plate is attached to the second mold on the movable side for a predetermined time when the mold is opened, and then the first mold core provided on the first mold on the fixed side is removed from the product. To be separated. Therefore, since the anti-stick plate is separated from the second plate after the first shape core provided in the first plate is removed from the product, the product is prevented from being attached to the core on the side of the first plate, so that the operation reliability of the injection mold assembly is increased. Since the product is made as designed and discharged from the mold assembly, the productivity of the product is increased.

Claims (8)

A fixed side plate installed on the fixed side of the molding machine, A first shape plate having a first shape core having a shape corresponding to the shape of the product on one surface and installed on the fixed side plate; A movable side plate provided on the movable side of the molding machine; A second mold plate provided on the movable side plate and provided with a second shape core at a portion corresponding to the first shape core to cooperate with the first shape core to form a space corresponding to the shape of the product; An anti-stick plate which is in close contact with the movable side plate at the initial stage of relative movement of the fixed side plate and the movable side plate by an interlocking mechanism provided on the fixed side plate side and separated from the movable side plate side after the first shape core is separated from the product; , And a locking block for fastening or releasing the attachment preventing plate to the second mold plate according to the relative movement between the movable side plate and the fixed side plate. The mold assembly of claim 1, wherein the linkage has a rear end fixed to the fixed side plate or the first mold plate, and protrudes a predetermined distance through the anti-stick plate. According to claim 2, wherein the end of the linkage is provided with a hook end having a larger diameter than the other portion of the linkage so that the attachment preventing plate is hooked, the hook end is a nut that is fixed by a bolt fastened to the tip of the linkage Mold assembly characterized in that. 4. The mold assembly according to claim 3, wherein the second mold is provided with a seating hole in which the tip of the linkage is positioned when the anti-stick plate is in close contact with the second mold. According to any one of claims 1 to 4, The second mold plate or the support plate provided on the movable side plate side is further provided with a block guard that the locking block is rotatably installed about the rotation axis, the locking block is Mold assembly characterized in that the support is rotated in the direction to be fastened to the attachment preventing plate by a spring. 6. The interlocking jaw of claim 5, wherein a front end of the locking block is interlocked with an interlock installed on the fixed side plate to allow the locking block to rotate while overcoming the elastic force of the spring during relative movement between the fixed side plate and the movable side plate. It is formed, the mold assembly characterized in that the hook jaw is hooked to the hanger provided in the anti-stick plate is formed at both ends. The method of claim 6, wherein the spring bolt is fastened through the block guard and the locking block, the spring bolt guides the position where the spring is installed through the center of the spring between the block guard and the locking block. Mold assembly. 8. A spacer block according to claim 7, wherein a spacer block is installed between the movable side plate and the support plate, and an eject pin for separating a product attached to the second shape core is provided in a space formed between the movable side plate and the support plate by the spacer block. Mold assembly, characterized in that the eject plate is provided.

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