KR102467368B1 - CRB mold with fastening means for easy fastening and separation - Google Patents

Abstract

The present invention relates to a CRB mold equipped with a fastening means easy to fasten and separate and, more specifically, to a CRB mold equipped with a fastening means easy to fasten and separate, which comprises: a CRB unit in which an upper fixing plate, a runner plate, an insulating plate, and an upper heating plate are sequentially stacked and arranged; a mold part disposed below the CRB unit; and a fastening means installed on the mold part, and including a fastening pin exposed upward through a through hole formed in the insulating plate, a fastening block hinged to the insulating plate, and a fastening groove formed on the fastening block and having a body of a fastening bolt inserted therein and discharged therefrom. The present invention adopts the hook-type fastening means with a simple structure as a fastening method between the mold part and the CRB unit, such that the mold part and the CRB unit can be easily and conveniently fastened and separated unlike the conventional bolt fastening method. The CRB unit is separated from the mold part and the CRB unit is maintained at a low temperature to prevent hardening or loss of a runner, thereby reducing a working time for maintenance of the CRB unit.

Description

CRB mold with fastening means for easy fastening and separation {CRB mold with fastening means for easy fastening and separation}

The present invention introduces a structurally simple hook-type fastening means for the fastening method between the mold part and the CRB unit, thereby making it easy and convenient to fasten and separate the mold part and the CRB unit, unlike the existing bolt fastening method, and to remove the CRB unit from the mold part. By separating and maintaining the CRB unit at a low temperature, hardening or loss of the runner is prevented, and through this, the work time for maintenance of the CRB unit can be shortened. will be.

Conventionally, various rubber products, including engine mounts, are manufactured by filling a certain mold with a rubber liquid and simultaneously vulcanizing it, usually CRB (COLD RUNNER BLOCK) mold, HRB (HOT RUNNER BLOCK) mold, mold having a single cavity It is manufactured using etc.

In particular, in the CRB mold, a heating device is placed in the part where the product is molded, but there is a low-temperature holding part in the runner part to constantly manage the temperature of the runner part, so that the rubber liquid material present in the runner part is not hardened and can be reused. refers to the mold of the structure.

That is, in the CRB mold, the temperature of the runner part, which is the supply path of the raw material, is maintained at a relatively low temperature compared to the mold part where the product is molded during operation, so the rubber liquid material filled in the runner part is not hardened, so the runner at the next injection As the liquid rubber material in the part goes down into the cavity of the product molding part, there is an advantage that the liquid rubber material in the runner part can be used for product molding.

In this case, the CRB unit and the mold part are coupled by a bolt fastening method and cannot be easily separated, so that the CRB unit is left in a fastened state without separating the CRB unit during normal work stoppage.

Therefore, the chiller had to be continuously operated to maintain the low temperature of the CRB unit even during work interruptions such as lunchtime or unavoidable breaks, and through this, the cooling water had to be continuously circulated through the cooling water passage of the CRB unit.

Even when the operation is stopped, since the rubber liquid path such as the runner in the CRB unit is filled with the rubber liquid to be used for product molding in the next injection, it is necessary to continue to maintain the low temperature.

If the cooling device is not operated when the work is stopped, it is difficult to maintain the low temperature of the CRB unit due to the heater heat coming from the upper heat plate and the mold part, so there is a problem of vulcanization and scorch (cured rubber) generation in the CRB unit. do.

For this reason, in the past, the cooling device had to be continuously operated even during work interruption, and eventually, there was a problem that the total cooling capacity and cooling cost were excessive due to the unnecessary operation of the cooling device during work stoppage. This is an urgent need.

Republic of Korea Patent Registration No. 10-0805081 (registered on February 13, 2008)

The present invention has been made to solve the above problems,

By introducing a structurally simple hook-type fastening method for the fastening method between the mold part and the CRB unit, unlike the existing bolt fastening method, it is easy and convenient to fasten and separate the mold part and the CRB unit. One object is to prevent hardening or loss of the runner by maintaining the unit at a low temperature, thereby shortening the work time for maintenance of the CRB unit.

Another object of the present invention is to secure coupling reliability by introducing a locking means to release the fastening means after being coupled to the mold unit and the CRB unit by the fastening means.

A CRB mold equipped with fastening means for easy fastening and separation according to the present invention includes a CRB unit in which an upper fixing plate and a runner plate are vertically stacked; a mold unit disposed below the CRB unit; And a fastening bolt installed in the mold part and exposed upward through a through hole formed in the runner plate of the CRB unit, a fastening block hinged to the runner plate of the CRB unit, and formed on the fastening convex, A fastening means composed of a fastening groove into which the body of the fastening bolt can be inserted and discharged when the fastening convex rotates.

One side of the fastening block of the fastening means according to the present invention is characterized in that an operating pin for a rotation operation of the fastening block is further provided.

The CRB unit according to the present invention is configured to be able to rotate, and after the CRB unit and the mold part are fastened by the fastening means, a locking means for preventing separation of the fastening means is further provided.

The locking means according to the present invention includes a locking plate hinged to one side of the runner plate of the CRB unit, a receiving groove provided in the locking plate, and into which the operation pin is inserted and discharged when the locking plate rotates. , It is characterized in that it comprises a key plate hinged to the locking plate, the operating pin is inserted and discharged during a turning operation.

The actuating pin according to the present invention is characterized in that an annular concave groove is provided, and a key groove into which the concave groove is inserted is further provided in the key plate.

Unlike the conventional bolt fastening method, the CRB mold equipped with a fastening means that is easy to fasten and separate according to the present invention adopts a structurally simple hook-type fastening means for fastening between the mold part and the CRB unit. Fastening and separation of the liver can be done easily and conveniently.

In addition, the present invention separates the CRB unit from the mold part and maintains the CRB unit in a low temperature state to prevent hardening or loss of the runner, thereby shortening the work time for maintenance of the CRB unit.

In addition, the present invention can guarantee coupling reliability by introducing a locking means to release the fastening means after being coupled to the mold unit and the CRB unit by the fastening means.

In addition, since the present invention can freely exchange mold parts after standardization of CRB molds, the convenience of mold exchange can be increased, thereby improving economic feasibility.

1 is a perspective view showing a CRB mold equipped with a fastening means for easy fastening and separation according to the present invention;
Figure 2 is a partially enlarged view showing the fastening means of the CRB mold according to the present invention;
3 is an operation diagram showing the operating state of the fastening means of the CRB mold according to the present invention;
Figure 4 is a partially enlarged view showing another embodiment of the CRB mold according to the present invention.

In order to explain the present invention and the operational advantages of the present invention and the objectives achieved by the practice of the present invention, the following describes a preferred embodiment of the present invention and references it.

First, the terms used in this application are used only to describe specific embodiments, and are not intended to limit the present invention, and singular expressions may include plural expressions unless the context clearly indicates otherwise. In addition, in this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other It should be understood that the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof is not precluded.

In describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

As shown in FIGS. 1 to 3, the CRB mold equipped with a fastening means 30 that is easy to fasten and separate according to the present invention is a CRB unit 10 composed of an upper fixing plate 11 and a runner plate 13 And, it is configured to include a mold part 20 disposed under the CRB unit 10 and a fastening means 30 for fastening and separating the CRB unit 10 and the mold part 20.

As shown in FIGS. 1 to 3, the CRB unit 10 according to the present invention is composed of an upper fixing plate 11 and a runner plate 13, and the resin material supplied to the mold part 20, that is, the rubber resin is constant It is configured so that it can be supplied at a temperature.

In the CRB unit 10, an upper fixing plate 11 equipped with an inlet for inputting rubber resin and a runner plate 13 equipped with runners for supplying the input rubber resin are disposed vertically. In addition, a cooling passage is formed in the upper fixing plate 11 and the runner plate 13 of the CRB unit 10, respectively, and a cooling device through which cooling water is communicated is disposed. Therefore, the rubber resin supplied through the CRB unit 10 can be maintained at a relatively low temperature (about 60 to 80 ° C) than the mold part 20 (about 170 to 180 ° C) where the molding temperature is maintained.

1 to 3, the mold unit 20 according to the present invention is disposed under the CRB unit 10, and the rubber resin supplied through the runner of the CRB unit 10 is supplied to the cavity.

In this case, the mold unit 20 includes a molding unit 21 provided with a gate, an upper heating plate 23 disposed above the molding unit 21, and a lower heating plate disposed below the molding unit 21, The forming unit 21 is heated to be maintained at about 170 to 180° C. by the upper and lower heating plates 23.

In addition, an insulating plate 15 for thermal insulation of the CRB unit 10 and the mold unit 20 may be disposed on the upper heat plate 23. In the present invention, the insulating plate 15 is integrated on the CRB unit 10 side. However, it may be integrally formed on the upper heat plate 23 side of the mold unit 20 as needed.

As mentioned above, the CRB unit 10 and the mold part 20 configured as described above can be easily separated as the existing CRB unit 10 and the mold part 20 are coupled by a bolt fastening method, as mentioned in the background technology. When the normal operation is stopped, the CRB unit 10 is left in a fastened state without being separately separated.

Therefore, the chiller had to be continuously operated to maintain the low temperature of the CRB unit 10 even during work interruptions such as lunchtime or unavoidable breaks, and through this, the cooling water was continuously circulated to the cooling water passage of the CRB unit 10 I had to.

Even when the operation is stopped, since the rubber liquid path such as the runner in the CRB unit 10 is filled with the rubber liquid to be used for product molding during the next injection, it is necessary to continuously maintain the low temperature.

If the cooling device is not operated when the operation is stopped, it is difficult to maintain the low temperature of the CRB unit 10 due to the heater heat rising from the upper heat plate 23 and the mold part 20, and therefore, vulcanization in the CRB unit 10 and scorch (cured rubber) generation.

For this reason, in the prior art, the cooling device had to be continuously operated even during work stoppage, and in order to solve the problem that the total cooling capacity and cooling cost are excessive due to the operation of the cooling device unnecessary during work stoppage, in the present invention, the CRB unit ( 10) and a fastening means 30 capable of facilitating coupling and separation between the mold unit 20 and the mold unit 20 are introduced.

Hereinafter, the fastening means 30, which is a key technical idea in the present invention, will be described in more detail with reference to FIGS. 1 to 3 attached.

As shown in Figures 1 to 3, the fastening means 30 according to the present invention is configured to facilitate separation as well as coupling between the CRB unit 10 and the mold unit 20.

To this end, the fastening means 30 according to the present invention is installed in the mold part 20, the fastening bolt 31 exposed upward through the through hole 34 formed in the CRB unit 10, and the CRB unit 10 The body 31a of the fastening bolt 31 is inserted and discharged when the fastening block 32 is hinged to the runner plate 13 of ) and formed on the fastening block 31 and the fastening block 31 rotates. It is configured to include possible fastening grooves 33.

That is, the fastening bolt 31 of the fastening means 30 is formed in the mold part 20 and passes through the head 31b and the body ( The upper part of 31a) protrudes and is exposed.

In addition, one side of the fastening block 32 is hinged by the pivot shaft 35 coupled to the runner plate 13 so that a pivoting operation is possible. In this case, when the fastening block 32 rotates in an outward direction, a separation operation is possible, and when it rotates in an inward direction, it becomes a fastening state.

In addition, the fastening groove 33 is formed in the fastening block 32 so that the fastening bolt 31 can be inserted and discharged by the turning motion of the fastening block 32 . To this end, the fastening groove 33 is provided with a curved portion 33a in a curved shape so that the body 31a of the fastening bolt 31 can be easily inserted and discharged during a turning operation. In addition, the upper end of the body 31a of the fastening bolt 31 is inserted into the fastening groove 33, and the head 31b of the fastening bolt 31 is exposed to the upper surface of the fastening block 32.

After stacking the CRB unit 10 and the mold part 20 vertically, the fastening means 30 configured as described above is rotated in the inward direction of the fastening block 32 to fasten the fastening bolt 31 to the fastening groove 33 While the body 31a of ) is inserted, the CRB unit 10 and the mold part 20 may be coupled. In this case, after being coupled to the fastening block 31 and the body 31a of the fastening bolt, when the fastening bolt 31 is fastened, the CRB unit 10 and the mold part 20 are in a fixed state.

Conversely, in the state where the CRB unit 10 and the mold part 20 are coupled, first loosen the fastening bolt 31, and then rotate the fastening block 32 outward, the fastening bolt 31 from the fastening groove 33 As the body 31a is discharged, the CRB unit 10 and the mold part 20 can be separated.

In this case, it is also preferable to install an operating pin 36 on one surface of the fastening means 30 so that the operator can grip it during the turning operation of the fastening block 32 to ensure work convenience.

By the fastening means 30 configured as described above, not only can the coupling and separation work between the CRB unit 10 and the mold part 20 be easily and conveniently performed, but also it is structurally simple and easy to manufacture, and the cost It is cheap and can increase the economy.

In the CRB mold of the present invention configured as described above, the CRB unit 10 and the mold part 20 are easily coupled and separated by the fastening means 30, but in particular, the CRB unit 10 and the mold part 20 After being coupled by the fastening means 30, the fastening bolt 31 can be separated from the fastening groove 33 by turning the fastening block 32 due to external factors or vibration or shaking of the mold itself. Therefore, it is also desirable to introduce a locking structure to prevent such a separation phenomenon.

This locking structure is introduced as the locking means 40 in the present invention, and hereinafter, the locking means 40 will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 4, the locking means 40 according to the present invention is configured to be pivotable to the CRB unit 10, and the CRB unit 10 and the mold part 20 are coupled by the fastening means 30 After, it is configured to prevent separation of the fastening means (30).

The locking means 40 for this is provided on the locking plate 41 hinged to one side of the runner plate 13 and the locking plate 41, and when the locking plate 41 rotates, the operation pin 36 ) It is configured to include a receiving groove 42 into which it is inserted and discharged, and a key plate 43 hinged to the locking plate 41 and into which the operating pin 36 is inserted and discharged during a turning operation.

That is, the locking means 40 is coupled by the hinge coupling part 45 so that the locking plate 41 can pivot to one side of the runner plate 13 adjacent to the fastening means 30 . In this case, it is preferable that the locking plate 41 has a 'L' shape in cross section and is configured to cover the front and upper edge portions of the fastening block 32 in a state in which the fastening means 30 is fastened.

In this case, when the locking plate 41 is rotated inward for locking, the operation pin 36 is naturally inserted into the receiving groove 42. However, in this state, since the locking plate 41 is also capable of rotating by itself, it is necessary to prevent the free rotation of the locking plate 41 by allowing the key plate 43 to be coupled to the actuating pin 36.

The key plate 43 is hinged to the outer surface of the locking plate 41, has a key groove 44 formed therein, and an annular groove 36a is formed in the actuating pin 36 to operate the key plate 43. It is preferable to restrict the free rotation of the locking plate 41 by rotating it toward the pin 36 and fitting it into the key groove 44 and the groove 36a so that a complete locking structure can be implemented.

Conversely, when the lock is released by the locking means 40, the key plate 43 is rotated to the opposite side to separate the key groove 44 from the groove 36a of the operating pin 36, and the locking plate 41 rotates. Since it is in an available state, the lock can be released by lock talk.

In this way, after the CRB unit 10 and the mold part 20 are coupled by the fastening means 30, the fastening means 30 is completely restrained through the locking operation by the locking means 40 to ensure the reliability of the coupling. It is desirable to allow

In addition, the locking means 40 configured as described above is not only easy to manufacture and install in that the structure is simple and the operation mechanism is also simple. Costs can also be reduced.

As such, the present invention has been described with reference to one embodiment shown in the drawings, but this is only exemplary, and those skilled in the art can make various modifications and equivalent other embodiments therefrom. will understand

Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: CRB unit
11: upper fixing plate 13: runner plate
15: insulation board
20: mold part
21: molding part 23: upper heat plate
30: fastening means
31: fastening bolt 31a: body
31b: head 32: fastening convex
33: fastening groove 33a: curved part
34: through hole 35: pivot
36: working pin 36a: groove
40: locking means
41: locking plate 42: receiving groove
43: key plate 44: keyway
45: hinge joint

Claims (5)

a CRB unit 10 in which an upper fixing plate 11 and a runner plate 13 are vertically stacked;
a mold unit 20 disposed below the CRB unit 10; and
A fastening bolt 31 installed in the mold part 20 and exposed upward through a through hole 34 formed in the runner plate 13 of the CRB unit 10;
A fastening block 32 hinged to the runner plate 13 of the CRB unit 10;
Fastening means 30 formed in the fastening block 32 and composed of a fastening groove 33 into which the body 31a of the fastening bolt 31 can be inserted and discharged during a turning operation of the fastening block 32 ;
An operating pin 36 for rotation of the fastening block 32 is further provided on one side of the fastening block 32 of the fastening means 30,
The CRB unit 10 is configured to be able to rotate, and after the CRB unit 10 and the mold part 20 are fastened by the fastening means 30, a lock for preventing separation of the fastening means 30 Means 40 are further provided,
The locking means 40 is
A locking plate 41 hinged to one side of the runner plate of the CRB unit 10;
An accommodation groove 42 provided on the locking plate 41 and into which the operation pin 36 is inserted and discharged when the locking plate 41 rotates;
A CRB equipped with a fastening means that is easy to fasten and separate, characterized in that it is hinged to the locking plate 41 and includes a key plate 43 into which the operating pin 36 is inserted and discharged during a pivoting operation mold.
delete delete delete According to claim 1,
The operation pin 36 is provided with an annular groove 36a,
The key plate 43 is provided with a key groove 44 into which the groove 36a is fitted.

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