KR102465609B1 - Safety Apparatus for Injection Molding Machine - Google Patents

Abstract

The present invention provides a protection unit coupled to the injection molding machine so as to protrude from the fixed template of the injection molding machine; a safety part having one side coupled to the injection molding machine so as to move together with the movable mold plate of the injection molding machine, and the other side being inserted into the protection part; And it relates to a safety device for an injection molding machine comprising a locking part selectively blocking the movement of the safety part to selectively block the movement of the movable platen.

Description

Safety Apparatus for Injection Molding Machine

The present invention relates to an injection molding machine that performs injection molding to produce an injection product.

Injection molding is the most widely used manufacturing method for manufacturing plastic products. For example, in products such as televisions, mobile phones, PDAs, and the like, various parts including covers and cases may be manufactured through injection molding.

In general, the manufacture of products through injection molding is made through the following processes. First, a molding material with pigments, stabilizers, plasticizers, fillers, etc. added is put into a hopper and made into a molten state. Next, the molding material in the molten state is injected into the mold and then solidified through cooling. Next, after extracting the solidified molding material from the mold, unnecessary parts are removed. Through these processes, injection products having various types and sizes are manufactured.

As a facility for performing such injection molding, an injection molding machine is used. The injection molding machine includes an injection device and a clamping device.

The injection device supplies the molding material in a molten state to the clamping device.

The clamping device solidifies the molding material in a molten state supplied from the injection device through cooling. The clamping device includes a movable platen to which the movable mold is coupled, a stationary platen to which the stationary mold is coupled, and a moving part for relatively moving the movable platen with respect to the stationary platen.

This injection molding machine operates as follows.

First, the moving unit moves the moving mold toward the fixed plate so that the moving mold and the fixed mold are in contact with each other. Accordingly, the movable mold and the stationary mold are mold-closed.

Next, when the movable mold and the stationary mold are closed, the injection device supplies the molding material in a molten state to the inside of the movable mold and the stationary mold.

Next, the clamping device solidifies the molding material in the molten state filled in the moving mold and the stationary mold through cooling.

Next, when the molding material in the molten state is solidified, the moving unit moves the moving platen so that the moving mold and the fixed mold are spaced apart from each other. Accordingly, the movable mold and the stationary mold are mold-opened.

Through the process as described above, the injection molding machine performs injection molding.

Here, the operator performs maintenance work such as mold replacement and repair in the vicinity of the clamping device as necessary. As such, when the moving part moves the movable platen while the operator performs the maintenance work, there is a problem in that there is a risk of a safety accident for the operator performing the maintenance work.

The present invention has been devised to solve the above-described problems, and to provide a safety device for an injection molding machine that can reduce the risk of safety accidents for workers performing maintenance work such as mold replacement and repair.

In order to achieve the above object, the present invention may include the following configuration.

A safety device for an injection molding machine according to the present invention includes: a protection unit coupled to the injection molding machine so as to protrude from a fixed template of the injection molding machine; a safety part having one side coupled to the injection molding machine so as to move together with the movable mold plate of the injection molding machine, and the other side being inserted into the protection part; a locking part selectively blocking the movement of the safety part to selectively block the movement of the movable template; and a support part movably coupled to the protection part so as to support the other side of the safety part inside the protection part.

According to the present invention, the following effects can be achieved.

The present invention is implemented to selectively block the movement of the movable template, thereby reducing the risk of safety accidents occurring for workers performing maintenance work such as mold replacement and repair due to the movement of the movable template.

1 is a schematic perspective view showing an example of an injection molding machine in which a safety device for an injection molding machine according to the present invention is installed;
2 and 3 are schematic side views showing a state in which a safety device for an injection molding machine according to the present invention is coupled to a clamping device;
4 is a schematic side cross-sectional view of a safety member and a locking part taken along line II of FIG. 2 in the safety device for an injection molding machine according to the present invention;
5 is a schematic side cross-sectional view of a safety member and a protection member taken along line II of FIG. 2 in the safety device for an injection molding machine according to the present invention;
6 is a conceptual diagram for explaining the operation relationship of the locking part in the safety device for an injection molding machine according to the present invention;
7 and 8 are schematic front views for explaining an embodiment in which the safety member is coupled to the movable platen through the first coupling member in the safety device for an injection molding machine according to the present invention;
9 and 10 are schematic front views for explaining an embodiment in which the protection member is coupled to the fixed platen through the second coupling member in the safety device for an injection molding machine according to the present invention;
11 is a schematic side cross-sectional view of a safety member, a protection member, and a support part taken along line II of FIG. 2 in the safety device for an injection molding machine according to the present invention;
12 is a schematic side cross-sectional view showing a state in which the safety member and the support part are disassembled based on FIG.
13 and 14 are schematic side cross-sectional views showing a support according to a modified embodiment of the present invention with reference to FIG. 11 ;
15 is a schematic side cross-sectional view of a safety part, a protection part, and an alignment part based on a line II of FIG. 2 in a safety device according to a modified embodiment of the present invention;

Hereinafter, an embodiment of a safety device for an injection molding machine according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 , the safety device 1 for an injection molding machine according to the present invention is installed in the injection molding machine 100 for manufacturing an injection product. Before describing the embodiment of the safety device 1 for an injection molding machine according to the present invention, an example of the injection molding machine 100 will be described as follows.

The injection molding machine 100 may include an injection device 110 and a clamping device 120 .

The injection device 110 supplies the molding material in a molten state to the clamping device 120 . The injection device 110 includes a barrel 111 for storing the molding material supplied from a hopper (not shown), an injection screw (not shown) rotatably coupled to the inside of the barrel 111, and the injection screw. It may include an injection driver 112 for driving. When the molding material is supplied into the barrel 111 through the hopper, the injection driver 112 may drive the injection screw. Accordingly, the injection device 110 melts and measures the molding material supplied to the inside of the barrel 111 , and then supplies the molding material in a molten state to the clamping device 120 .

The clamping device 120 solidifies the molding material in a molten state supplied from the injection device 110 through cooling. The clamping device 120 includes a fixed mold plate 121 to which a fixed mold 121a is coupled, a movable mold plate 122 to which the movable mold 122a is coupled, and the movable mold plate 122 in a first direction (FD arrow direction). ) and a moving unit 123 for moving in the second direction (SD arrow direction). The first direction (FD arrow direction) is a direction from the movable platen 122 toward the fixed platen 121 . The second direction (SD arrow direction) is opposite to the first direction (FD arrow direction).

When the moving part 123 molds the moving mold 122a and the fixed mold 121a by moving the moving mold plate 122 in the first direction (FD arrow direction), the injection device 110 supplies the molding material in a molten state to the inside of the moving mold 122a and the stationary mold 121a. Then, when the clamping device 120 solidifies the molding material in the molten state filled in the moving mold 122a and the fixed mold 121a through cooling, the moving part 123 moves the moving mold plate 122 ) in the second direction (SD arrow direction) to open the movable mold 122a and the fixed mold 121a. The movable template 122 may move in the first direction (FD arrow direction) and the second direction (SD arrow direction) along the tie bar 124 .

1 to 3 , the safety device 1 for an injection molding machine according to the present invention is implemented to selectively block the movement of the movable template 122 . Accordingly, the safety device 1 for the injection molding machine according to the present invention can reduce the risk of a safety accident for the operator due to the movement of the movable template 122 . To this end, the safety device 1 for an injection molding machine according to the present invention includes a safety part 2 , a protection part 3 , and a locking part 4 .

The safety part 2 is to move together with the movable platen 122 . One side of the safety part 2 may be coupled to the injection molding machine 100 . In this case, one side of the safety part 2 is directly coupled to the movable template 122 , so that it may be implemented to move together with the movable template 122 . The safety part 2 may be implemented so that one side is coupled to the movable part 123 to move together with the movable platen 122 through the movable part 123 . The other side of the safety part 2 may be inserted into the protection part 3 .

The safety part 2 may include a safety member 21 .

The safety member 21 may be connected to the movable platen 122 to move together with the movable platen 122 . As the movable template 122 moves in the first direction (FD arrow direction), the safety member 21 may move to protrude from the fixed template 121 in the first direction (FD arrow direction). . In this case, the other side of the safety member 21 may protrude from the fixed template 121 toward the first direction (FD arrow direction). As the movable template 122 moves in the second direction (SD arrow direction), the safety member 21 may move in the second direction (SD arrow direction). Also in this case, the other side of the safety member 21 may protrude from the fixed template 121 toward the first direction (FD arrow direction). That is, the distance the other side of the safety member 21 protrudes from the fixed template 121 toward the first direction (FD arrow direction) may be changed according to the moving direction and the moving distance of the movable template 122 . have.

The safety member 21 may be disposed so that one side is connected to the movable platen 122 and the other side is inserted into the protection part 3 . One side of the safety member 21 is directly connected to the movable template 122 , and thus may be implemented to move together with the movable template 122 . One side of the safety member 21 is connected to the movable platen 122 through the moving part 123 , and thus may be implemented to move together with the movable platen 122 .

The safety member 21 may be formed in a rod shape parallel to the first axial direction (X-axis direction), but is not limited thereto, and one side is connected to the movable platen 122 and the other side is connected to the protection unit ( 3) If it can be inserted into the inside, it may be formed in another shape such as a rectangular shape. The first axial direction (X-axis direction) is an axial direction parallel to both the first direction (FD arrow direction) and the second direction (SD arrow direction).

The movement of the safety member 21 may be selectively blocked by the locking part 4 . If the movement of the safety member 21 is not blocked by the locking part 4 , the safety member 21 may move together as the movable platen 122 moves. When the movement of the safety member 21 is blocked by the locking part 4 , the safety member 21 may block the movement of the movable template 122 . Accordingly, the safety device 1 for an injection molding machine according to the present invention is implemented to block the movement of the movable template 122 by blocking the movement of the safety member 21 as necessary, such as mold replacement, repair, etc. It can reduce the risk of safety accidents for workers performing maintenance work.

The safety member 21 may include a plurality of blocking grooves 211 .

The blocking grooves 211 may be formed in the safety member 21 to be disposed at positions spaced apart from each other in the first axial direction (X-axis direction). Each of the blocking grooves 211 may be formed by machining a groove in the outer surface 21a of the safety member 21 . As the blocking grooves 211 are disposed at positions spaced apart from each other in the first axial direction (X-axis direction), blocking protrusions 212 may be disposed between the blocking grooves 211 . As shown by a solid line in FIG. 4 , when the locking part 4 is inserted into the blocking groove 211 , the locking part 4 supports the blocking protrusions 212 to move the safety member 21 . can be blocked. As shown by a dotted line in FIG. 4 , when the locking part 4 is spaced apart from the blocking groove 211 , the locking part 4 is spaced apart from the blocking protrusions 212 . Does not block movement.

1 to 3 , the protection part 3 is coupled to the injection molding machine 100 so as to protrude from the fixed template 121 . The other side of the safety part 2 may be inserted into the protection part 3 . Accordingly, even if the other side of the safety part 2 moves to protrude from the fixed template 121 as the movable template 122 moves, the other side of the safety part 2 is inside the protection part 3 . can be located Therefore, the safety device 1 for an injection molding machine according to the present invention can reduce the risk that the safety part 2 collides with an operator while the safety part 2 moves. In addition, in the safety device 1 for an injection molding machine according to the present invention, since the protection part 3 protrudes from the fixed template 121, the operator can be induced to move while avoiding the protection part 3 . Therefore, the safety device 1 for the injection molding machine according to the present invention can induce the operator to move while avoiding the movement path of the safety part 2 , thereby reducing the risk of a safety accident occurring for the operator.

The protection part 3 may be coupled to the injection molding machine 100 . In this case, the protection part 3 may be disposed to protrude from the fixed template 121 by being directly coupled to the fixed template 121 . The protection part 3 may be disposed to protrude from the fixed template 121 through the moving part 123 by being coupled to the moving part 123 .

1 to 5 , the protection part 3 may include a protection member 31 .

The protection member 31 protrudes from the fixed template 121 . The other side of the safety member 21 may be inserted into the protection member 31 . The protective member 31 may be disposed to protrude from the fixed template 121 toward the first direction (FD arrow direction). Accordingly, even if the safety member 21 protrudes from the fixed template 121 toward the first direction (FD arrow direction) as the movable template 122 moves, the other side of the safety member 21 is the It may be located inside the protection member 31 . When the safety member 21 moves to the maximum distance in the first direction (FD arrow direction) together with the movable template 122 , the other end of the safety member 21 is a first distance from the fixed template 121 . (L1, shown in FIG. 5) may be spaced apart. The other end of the safety member 21 means the end of the safety member 21 facing the first direction (FD arrow direction). In this case, the protective member 31 is a second distance (L2, shown in FIG. 5) longer than the first distance (L1) from the fixed template 121 toward the first direction (FD arrow direction). It may be arranged to protrude. Accordingly, even when the safety member 21 and the movable platen 122 move to the maximum distance in the first direction (FD arrow direction), the other side of the safety member 21 is inside the protection member 31 . may remain inserted into the That is, the other side of the safety member 21 does not protrude from the protection member 31 . Therefore, the safety device 1 for an injection molding machine according to the present invention is implemented to prevent the safety part 2 from collided with the operator while the safety part 2 is moving, thereby improving safety for the operator. have.

The protection member 31 may be disposed to protrude from the fixed template 121 toward the first direction (FD arrow direction) by being directly coupled to the fixed template 121 . The protection member 31 is coupled to the moving part 123 and is coupled to the fixed template 121 through the moving part 123, so that the protective member 31 is coupled to the fixed template 121 in the first direction (FD arrow direction). It may be arranged to protrude toward the side. The protective member 31 may be formed in the form of a rod parallel to the first axial direction (X-axis direction), but is not limited thereto. It may be formed in a shape.

A protection hole 311 may be formed in the protection member 31 . The protection hole 311 may be formed to penetrate the protection member 31 . One side of the safety member 21 may be coupled to the injection molding machine 100 , and the other side may be inserted into the protection hole 311 . As the movable platen 122 moves, the safety member 21 moves in the first direction (FD arrow direction) and the second direction (SD arrow direction) with the other side inserted into the protection hole 311 . can move to

1 to 6 , the locking part 4 selectively blocks the movement of the safety part 2 to selectively block the movement of the movable template 122 . For example, when the operator performs maintenance work such as mold replacement or repair in the vicinity of the clamping device 120 , the locking part 4 blocks the movement of the safety part 2 , so that the movable mold plate 122 . movement can be blocked. Accordingly, the locking part 4 can prevent a safety accident for the operator due to the movement of the movable platen 122 . For example, when there is no operator in the vicinity of the clamping device 120 , the locking part 4 may allow the movement of the movable template 122 by allowing the movement of the safety part 2 . Accordingly, the injection molding machine 100 may perform injection molding by moving the movable platen 122 .

The locking part 4 is rotatable between a locked position (LP, shown in FIG. 6) and an unlocked position (RP, shown in FIG. 6).

When the locking part 4 is positioned at the locking position LP, the locking part 4 may contact the safety part 2 to block movement of the safety part 2 . Accordingly, the locking part 4 may block the movement of the movable template 122 . In this case, the locking part 4 is inserted into the blocking groove 211 to support the blocking protrusions 212 , thereby blocking the movement of the safety member 21 .

When the locking part 4 is positioned at the release position RP, the locking part 4 may be spaced apart from the safety part 2 to allow movement of the safety part 2 . Accordingly, the locking part 4 may allow the movement of the movable template 122 . In this case, the locking part 4 is spaced apart from the blocking groove 211 and the blocking protrusions 212 , thereby allowing movement of the safety member 21 .

The locking part 4 may be rotatably coupled to the fixed template 121 . The locking part 4 may be rotatably coupled to the protection part 3 . The locking part 4 may be formed in the form of a hook as a whole.

The locking part 4 can be rotated between the locking position LP and the unlocking position RP by an operation part 40 (shown in FIG. 6 ). The operation unit 40 is a cylinder method using a hydraulic cylinder or a pneumatic cylinder, a gear method using a rack gear and a pinion gear, a ball screw using a ball screw and a ball nut The locking part 4 can be rotated through a ball screw method, a linear motor method using a coil and a permanent magnet, or the like.

The locking part 4 may rotate between the locking position LP and the unlocking position RP according to whether the doorway 130 (shown in FIG. 6 ) is opened or closed. The entrance 130 is for entering and exiting the clamping device 120 . The entrance 130 may be movably installed on a partition wall (not shown) surrounding the injection molding machine 100 . When the doorway 130 moves to open a passage (not shown) formed in the partition wall, the locking part 4 rotates to the locking position LP so that the safety part 2 and the movable template 122 are locked. movement can be blocked. Accordingly, the safety device 1 for an injection molding machine according to the present invention can be implemented to reduce the risk of a safety accident occurring for an operator entering the clamping device 120 through the passage. When the doorway 130 moves to close the passage formed in the partition wall, the locking part 4 rotates to the release position RP to allow the movement of the safety part 2 and the movable template 122 . can Accordingly, the safety device 1 for the injection molding machine according to the present invention can be implemented so that the injection molding machine 100 performs injection molding in a state in which an operator cannot enter the clamping device 120 through the passage. have.

The locking part 4 may rotate between the locking position LP and the unlocking position RP according to a signal received from a sensor (not shown) that detects whether the doorway 130 is opened or closed. In this case, the operation unit 40 may rotate the lock unit 4 according to a signal received from the sensor. The locking part 4 may rotate between the locking position LP and the unlocking position RP according to the movement of a connecting member (not shown) that moves according to whether the doorway 130 is opened or closed. In this case, the locking part 4 can be rotated by the connecting member without the operation part 40 . The connecting member may be a wire.

Here, in the safety device 1 for an injection molding machine according to the present invention, the safety part 2 and the protection part 3 are coupled to the moving part 123, so that the movable platen ( 122) and may be implemented to be coupled to the fixed template 121 (hereinafter referred to as "first embodiment"). In the safety device 1 for an injection molding machine according to the first embodiment of the present invention, the safety part 2 and the protection part 3 may be implemented as follows.

First, the safety part 2 may include a first coupling member 22 (shown in FIG. 2 ).

The first coupling member 22 may be coupled to the moving part 123 . Accordingly, the first coupling member 22 may be connected to the movable template 122 through the movable part 123 so as to move together as the movable template 122 moves. One side of the safety member 21 may be coupled to the first coupling member 22 so that the other side is inserted into the protection part 3 . Accordingly, the safety member 21 may move as the movable template 122 moves through the first coupling member 22 with the other side inserted into the protection part 3 . Therefore, in the safety device 1 for an injection molding machine according to the first embodiment of the present invention, without securing a separate space for coupling the safety part 2 to the movable platen 122, the movable part 123 is can be used to connect the safety part 2 to the movable platen 122 . Therefore, in the safety device 1 for an injection molding machine according to the first embodiment of the present invention, the safety part 2 is connected to the movable platen 122 so that the safety part 2 moves together with the movable platen 122 . The ease of work can be improved.

In this case, the moving part 123 may include a first moving mechanism 123a coupled to the moving platen 122 . The first coupling member 22 may be coupled to the first moving mechanism 123a. Accordingly, the safety device 1 for an injection molding machine according to the first embodiment of the present invention processes only the surface of the first moving mechanism 123a to which the first coupling member 22 is coupled. Only by working, it is possible to secure a space for connecting the safety part 2 to the movable platen 122 . Therefore, in the safety device 1 for an injection molding machine according to the first embodiment of the present invention, when directly processing the surface of the movable platen 122 , the safety part 2 is used for the movable platen 122 . ), it can improve the ease of machining operation to connect to, as well as reduce the machining cost.

The first coupling member 22 may be coupled to the first moving mechanism 123a so as to be positioned above the first moving mechanism 123a. Accordingly, the safety part 2 may be disposed at a position where the movable part 123 does not interfere with the operation of moving the movable template 122 . Therefore, the safety device 1 for an injection molding machine according to the first embodiment of the present invention is implemented so that the injection molding machine 100 can smoothly perform injection molding, while reducing the risk of safety accidents for workers can be In this case, since the upper surface of the first moving mechanism 123a is processed to be flat, the first coupling member 22 is disposed in parallel with the safety member 21 in the first axial direction (X-axis direction). It may be coupled to the upper surface of the first moving mechanism (123a) as possible.

Next, the protection part 3 may include a second coupling member 32 (shown in FIG. 2 ).

The second coupling member 32 may be coupled to the moving part 123 . Accordingly, the second coupling member 32 may be connected to the fixed template 121 through the moving part 123 . The protection member 31 may be coupled to the second coupling member 32 so as to protrude from the fixed template 121 . Therefore, the safety device 1 for an injection molding machine according to the first embodiment of the present invention does not secure a separate space for coupling the protection part 3 to the fixed template 121, and the moving part 123 is ) may be used to connect the protection part 3 to the fixed template 121 . Therefore, the safety device 1 for an injection molding machine according to the first embodiment of the present invention can improve the easiness of the operation of connecting the protection part 3 to the fixed template 121 .

In this case, the moving part 123 may include a second moving mechanism 123b coupled to the fixed template 121 . The second coupling member 32 may be coupled to the second moving mechanism 123b. Accordingly, the safety device 1 for an injection molding machine according to the first embodiment of the present invention processes only the surface of the second moving mechanism 123b to which the second coupling member 32 is coupled. Only by working, it is possible to secure a space for connecting the protection part 3 to the fixed template 121 . Therefore, in the safety device 1 for an injection molding machine according to the first embodiment of the present invention, when directly processing the surface of the fixed template 121, the protection part 3 is installed in the fixed template ( 121), it is possible to improve the easiness of the machining operation for connecting to the 121), as well as reduce the machining cost.

The second coupling member 32 may be coupled to the second moving mechanism 123b so as to be positioned above the second moving mechanism 123b. Accordingly, the protection part 3 may be disposed at a position where the movable part 123 does not interfere with the operation of moving the movable template 122 . Therefore, the safety device 1 for an injection molding machine according to the first embodiment of the present invention is implemented so that the injection molding machine 100 can smoothly perform injection molding, while reducing the risk of safety accidents for workers can be In this case, since the upper surface of the second moving mechanism 123b is processed to be flat, the second coupling member 32 is arranged so that the protective member 31 is parallel to the first axial direction (X-axis direction). It may be coupled to the upper surface of the second moving mechanism (123b) as possible.

Here, when the moving part 123 is implemented as a cylinder, the moving part 123 may include a cylinder rod 123c connecting the first moving mechanism 123a and the second moving mechanism 123b. can When the second moving mechanism 123b is implemented as a cylinder body, the second moving mechanism 123b moves the cylinder rod 123c through the first moving mechanism 123a to the movable platen 122 can be moved

The safety device 1 for an injection molding machine according to the present invention may be implemented such that the safety part 2 is directly coupled to the movable template 122 , and the protection part 3 is directly coupled to the fixed template 121 . Yes (hereinafter referred to as "the second embodiment"). In the safety device 1 for an injection molding machine according to the second embodiment of the present invention, the safety part 2 and the protection part 3 may be implemented as follows.

7 and 8 , the safety part 2 may include the first coupling member 22 .

The first coupling member 22 may be coupled to the movable platen 122 . Accordingly, the first coupling member 22 may move together as the movable platen 122 moves. One side of the safety member 21 may be coupled to the first coupling member 22 so that the other side is inserted into the protection part 3 (shown in FIG. 9 ). Accordingly, as the safety member 21 moves through the first coupling member 22 with the other side inserted into the protection part 3 (shown in FIG. 9), the movable template 122 moves. can move along.

The first coupling member 22 may be coupled to the movable platen 122 so as to protrude to the outside of the movable platen 122 . Accordingly, the safety member 21 may be coupled to the first coupling member 22 to be disposed at a position spaced apart from the movable platen 122 . Therefore, the safety device 1 for an injection molding machine according to the second embodiment of the present invention uses the first coupling member 22 to increase the distance the safety member 21 is spaced apart from the movable template 122 . By doing so, the possibility that the safety member 21 interferes with other components coupled to the movable platen 122 can be reduced.

For example, when the safety member 21 is directly coupled to the movable template 122 as shown by dotted lines in FIGS. 7 and 8 , the tie coupled to the safety member 21 and the movable template 122 . The bars 124 may be spaced apart by a first distance D1. In contrast, when the safety member 21 is coupled to the first coupling member 22 and coupled to the movable platen 122 as shown by a solid line in FIGS. 7 and 8, the safety member 21 ) and the tie bar 124 coupled to the movable platen 122 may be spaced apart by a second distance D2 greater than the first distance D1.

Therefore, in the safety device 1 for an injection molding machine according to the second embodiment of the present invention, the safety member 21 may interfere with other parts such as the tie bar 124 coupled to the movable platen 122 . By reducing , the movable template 122 can be moved smoothly for injection molding, and the risk of a safety accident due to the movement of the movable template 122 can be reduced.

As shown in FIG. 7 , the first coupling member 22 may be coupled to the movable template 122 so as to protrude upward of the movable template 122 . In this case, the safety member 21 may be disposed at a position spaced upward from the movable platen 122 . As shown in FIG. 8 , the first coupling member 22 may be coupled to the movable platen 122 so as to protrude to the side of the movable platen 122 . In this case, the safety member 21 may be disposed at a position spaced laterally from the movable platen 122 .

9 and 10 , the protection part 3 may include the second coupling member 32 .

The second coupling member 32 may be coupled to the fixed template 121 . The second coupling member 32 may be coupled to the fixed template 121 so as to protrude to the outside of the fixed template 121 . Accordingly, the protection member 31 may be coupled to the second coupling member 32 to be disposed at a position spaced apart from the fixed template 121 . Therefore, the safety device 1 for an injection molding machine according to the second embodiment of the present invention increases the distance at which the protection member 31 is separated from the fixed template 121 by using the second coupling member 32 . By doing so, it is possible to reduce the possibility that the protective member 31 interferes with other components coupled to the fixed template 121 .

For example, when the protection member 31 is directly coupled to the fixed template 121 as shown by dotted lines in FIGS. 9 and 10 , the protection member 31 and the tie coupled to the fixed template 121 . The bars 124 may be spaced apart by a third distance D3. In contrast, when the protection member 31 is coupled to the second coupling member 32 and coupled to the fixed template 121 as shown by a solid line in FIGS. 9 and 10 , the protection member 31 ) and the tie bar 124 coupled to the fixed template 121 may be spaced apart by a fourth distance D4 greater than the third distance D3.

Therefore, in the safety device 1 for an injection molding machine according to the second embodiment of the present invention, the protection member 31 may interfere with other parts such as the tie bar 124 coupled to the fixed template 121 . By reducing , the movable template 122 can be moved smoothly for injection molding, and the risk of a safety accident due to the movement of the movable template 122 can be reduced. The fourth distance D4 and the second distance D2 may be implemented to be identical to each other.

As shown in FIG. 9 , the second coupling member 32 may be coupled to the fixed template 121 so as to protrude upward of the fixed template 121 . In this case, the protection member 31 may be disposed at a position spaced upward from the fixed template 121 . As shown in FIG. 10 , the second coupling member 32 may be coupled to the fixed template 121 so as to protrude to the side of the fixed template 121 . In this case, the protection member 31 may be disposed at a position spaced laterally from the fixed template 121 .

2, 11 and 12 , the safety device 1 for an injection molding machine according to the first and second embodiments of the present invention may further include a support part 5 .

The support part 5 supports the safety part 2 . The support part 5 may be movably coupled to the protective part 3 so as to support the other side of the safety part 2 inside the protective part 3 . Accordingly, the safety device 1 for an injection molding machine according to the present invention supports the other side of the safety part 2 using the support part 5, so that both ends of the safety part 2 are supported. can be implemented. Therefore, the safety device 1 for an injection molding machine according to the present invention can reduce the amount of deflection occurring in the safety part 2 when compared to the comparative example implemented in a cantilever structure in which only one side of the safety part 2 is supported. . Accordingly, the safety device 1 for an injection molding machine according to the present invention can prevent the performance of the safety function using the safety part 2 and the lock part 4 from being deteriorated. In addition, the safety device 1 for an injection molding machine according to the present invention has sufficient rigidity required for the safety part 2 even if the diameter of the safety member 21 is reduced when compared to the comparative example implemented with a cantilever structure. It can be implemented to be secured. Therefore, the safety device 1 for an injection molding machine according to the present invention can reduce the material cost for the safety part 2 as well as improve the easiness of the operation of installing the safety part 2 .

The support part 5 may support the safety member 21 . The safety member 21 may be coupled to the support part 5 so that the other side is supported by the support part 5 . The support part 5 may be movably coupled to the protection member 31 . The support part 5 may be inserted into the protection hole 311 so as to be movable inside the protection member 31 . The support part 5 may support the safety member 21 so that the outer surface 21a of the safety member 21 moves away from the inner surface 31a of the protection member 31 . Accordingly, in the safety device 1 for an injection molding machine according to the present invention, as the outer surface 21a of the safety member 21 moves in contact with the inner surface 31a of the protection member 31, the safety member It is possible to prevent deformation of the safety member 21 such as the outer surface 21a of the 21 is worn by friction. Therefore, the safety device 1 for an injection molding machine according to the present invention can prevent the performance of the safety function using the safety member 21 and the locking part 4 from being deteriorated, as well as the safety member 21 ) can extend the service life.

The support part 5 may be formed to have a weaker hardness than that of the protection member 31 . Accordingly, the safety device 1 for an injection molding machine according to the present invention may induce wear to the support part 5 when friction occurs between the support part 5 and the protection member 31 . Therefore, the safety device 1 for an injection molding machine according to the present invention can be implemented so that maintenance work such as repair and replacement according to wear is made more for the support part 5 than for the protection member 31 . . Accordingly, the safety device 1 for an injection molding machine according to the present invention can be implemented to not only improve the ease of maintenance work such as repair and replacement according to wear, but also reduce maintenance costs.

When the support part 5 is implemented to space the outer surface 21a of the safety member 21 and the inner surface 31a of the protection member 31 apart from each other, the diameter 311D of the protection hole 311, Fig. 11 ) may be implemented to be larger than the diameter 21D (shown in FIG. 12 ) of the safety member 21 . The diameter ( 5D , shown in FIG. 12 ) of the support part 5 may be implemented to be larger than the diameter 21D of the safety member 21 . Accordingly, the support part 5 can support the safety member 21 so that the outer surface 21a of the safety member 21 moves in a state spaced apart from the inner surface 31a of the protection member 31 . . The diameter 5D of the support part 5 and the diameter 311D of the protection hole 311 may be the same as each other. In this case, the support part 5 may include a guide surface 51 .

The guide surface 51 may be in contact with the inner surface 31a of the protection member 31 . Accordingly, the guide surface 51 is the inner surface ( 31a). Accordingly, the support part 5 can support the safety member 21 so that the safety member 21 moves in a straight line along the first direction (FD arrow direction) and the second direction (SD arrow direction). have. Accordingly, in the safety device 1 for an injection molding machine according to the present invention, even if the relative position of the safety member 21 with respect to the locking part 4 is changed according to the moving direction and the moving distance of the movable template 122 , , the locking part 4 may be implemented to firmly support the safety member 21 to block the movement of the safety member 21 .

The support part 5 may include an insertion groove 52 (shown in FIG. 12 ).

The insertion groove 52 is into which the safety member 21 is inserted. The safety member 21 may include a protrusion member 213 protruding toward the support part 5 . The protruding member 213 may protrude in the first direction (FD arrow direction). The support part 5 may support the protrusion member 213 inserted into the insertion groove 52 . Accordingly, the support part 5 may firmly support the safety member 21 so that the outer surface 21a of the safety member 21 moves in a state spaced apart from the inner surface 31a of the protection member 31 . can The protrusion member 213 may be formed in a cylindrical shape as a whole, but is not limited thereto and may be formed in other shapes such as a rectangular parallelepiped shape as long as it is inserted into the insertion groove 52 and supported by the support part 5 . have. The protrusion member 213 and the insertion groove 52 may be formed to have the same size as each other.

The support part 5 may include a receiving groove 53 (shown in FIG. 12 ).

The receiving groove 53 accommodates a fastening member (not shown) for coupling the support 5 and the safety member 21 . The fastening member is fastened to each of the support part 5 and the safety member 21 , thereby coupling the support part 5 and the safety member 21 . In this case, the fastening member may be disposed so as not to protrude from the support part 5 by being accommodated in the receiving groove 53 . For example, when the fastening member is implemented as a bolt, the head of the bolt may be accommodated in the receiving groove 53 . The receiving groove 53 may be formed on one surface of the support part 5 facing the first direction (FD arrow direction). One surface of the support part 5 is a surface opposite to the other surface of the support part 5 on which the insertion groove 52 is formed. The receiving groove 53 may be formed by machining a groove to a predetermined depth on one surface of the support part 5 .

Referring to FIG. 13 , in the support part 5 according to the modified embodiment of the present invention, the insertion groove 52 may be formed to have a smaller diameter than that of the protrusion member 213 . That is, the diameter 213a of the protrusion member 213 may be larger than the diameter 52a of the insertion groove 52 . Accordingly, the protruding member 213 may be inserted into the insertion groove 52 in an interference fit method. Therefore, since the safety device 1 for an injection molding machine according to the present invention can strengthen the coupling force between the safety member 21 and the support part 5, the movable template 122 (shown in FIG. 2) moves. Separation of the safety member 21 and the support part 5 can be prevented.

Referring to FIG. 13 , in the support part 5 according to the modified embodiment of the present invention, the insertion groove 52 is the length of the support part 5 with respect to the first axial direction (X-axis direction). It can be formed with a length of 0.5 times or more and 0.8 times or less. That is, when the length 5a of the support part 5 is L (L is a real number greater than 0) based on the first axial direction (X-axis direction), the length of the insertion groove 52 ( 52b) may be implemented in 0.5L or more and 0.8L or less. In this case, the length 213b of the protrusion member 213 may be implemented to be 0.5L or more and 0.8L or less. Therefore, the safety device 1 for an injection molding machine according to the present invention can increase the support area in which the protruding member 213 is supported by the support part 5, so that the amount of deflection generated in the safety member 21 is further reduced. can be reduced The protrusion member 213 may be formed to have the same length as the insertion groove 52 in the first axial direction (X-axis direction).

Referring to FIG. 14 , in the support part 5 according to the modified embodiment of the present invention, the insertion groove 52 may be formed to have a larger diameter than that of the blocking protrusion 212 . That is, the diameter 52a of the insertion groove 52 may be larger than the diameter 212a of the blocking protrusion 212 . In this case, the protrusion member 213 may be formed to have a larger diameter than that of the blocking protrusion 212 . That is, the diameter 213a of the protrusion member 213 may be larger than the diameter 212a of the blocking protrusion 212 . Accordingly, since the safety device 1 for an injection molding machine according to the present invention can increase the coupling area between the safety member 21 and the support part 5 , the safety device 21 between the safety member 21 and the support part 5 . The bonding strength can be further strengthened. Therefore, the safety device 1 for an injection molding machine according to the present invention prevents the separation of the safety member 21 and the support part 5 from the safety member 21 while the movable template 122 (shown in FIG. 2 ) moves. power can be further strengthened. The diameter 213a of the protrusion member 213 and the diameter 52a of the insertion groove 52 may be implemented to be the same. The diameter 213a of the protrusion member 213 may be larger than the diameter 52a of the insertion groove 52 .

2 and 15 , the safety device 1 for an injection molding machine according to a modified embodiment of the present invention may include an alignment unit 6 (shown in FIG. 15 ).

The alignment part 6 is coupled to the safety part 2 . The alignment part 6 may be coupled to the safety part 2 at a position spaced apart from the support part 5 toward the second direction (SD arrow direction). Accordingly, when both the alignment part 6 and the support part 5 are inserted into the protection part 3 as the movable template 122 (shown in FIG. 2) moves, the alignment part 6 ) and the support part 5 may support the other side of the safety part 2 at different positions. Therefore, the safety device 1 for an injection molding machine according to a modified embodiment of the present invention is located inside the protection part 3 in the safety part 2 using the alignment part 6 and the support part 5. You can align the position of the inserted part. In addition, the safety device 1 for an injection molding machine according to a modified embodiment of the present invention further strengthens the support structure at both ends for the safety part 2 using the alignment part 6 and the support part 5, It is possible to further reduce the amount of deflection occurring in the safety part (2).

The alignment part 6 may be coupled to the safety member 21 . The alignment part 6 may be coupled to the safety member 21 so as to be inserted into any one of the blocking grooves 211 formed in the safety member 21 . In this case, both ends of the alignment part 6 may be supported by the blocking protrusions 212 based on the first axial direction (X-axis direction). Accordingly, the alignment part 6 may be firmly coupled to the safety member 21 .

The alignment part 6 is located outside the protection part 3 as the movable platen 122 moves in the second direction (SD arrow direction), and the movable platen 122 moves in the first direction ( FD may be located inside the protection part 3 as it moves in the direction of the arrow). For example, when the movable mold 122a (shown in FIG. 2 ) and the stationary mold 121a (shown in FIG. 2 ) are mold-opened, the alignment part 6 is positioned outside the protection part 3 . It may be coupled to the safety part (2). When the movable mold plate 122 is moved toward the first direction (FD arrow direction) to mold the movable mold 122a and the fixed mold 121a, the alignment part 6 becomes the protection part 3 It may be located inside the protection part 3 after entering the inside of the.

The alignment unit 6 may include an alignment member 61 . The alignment member 61 may be formed to decrease in size as it extends in the first direction (direction of the FD arrow). Accordingly, the alignment member 61 moves toward the first direction (FD arrow direction) in a state located outside the protection unit 3 and enters the protection unit 3 while entering the protection unit 3 ) can be aligned by being supported on the inner surface. Therefore, the aligning unit 6 aligns the position of the safety unit 2 while entering the inside of the protection unit 3 using the alignment member 61, thereby preventing the position of the safety unit 2 from being shifted. Accordingly, it is possible to prevent the performance of the safety function using the safety part 2 and the lock part 4 from being deteriorated. In this case, since the inner surface 31a of the protection member 31 supports the alignment member 61 , the positions of the alignment member 61 and the safety member 21 may be aligned.

The alignment member 61 is formed such that the alignment surface 611 disposed to face the first direction (FD arrow direction) forms an inclined surface, so that the size decreases as it extends toward the first direction (FD arrow direction). can be formed. In this case, as the alignment surface 611 extends in the first direction (the direction of the FD arrow), the distance away from the safety member 21 may be shortened. The alignment member 61 may be formed such that the alignment surface 611 has a curved surface, so that the size of the alignment member 61 decreases as it extends toward the first direction (the direction of the FD arrow). Accordingly, while the alignment member 61 moves toward the first direction (FD arrow direction) in a state located outside the protection unit 3 and enters the inside of the protection unit 3, the safety unit 2 In the process of aligning the positions, it is possible to reduce the impact generated when the alignment member 61 is supported on the inner surface of the protection part (3).

The alignment unit 6 may include an alignment body 62 coupled to the alignment member 61 . The alignment body 62 may be located in the second direction (SD arrow direction) with respect to the alignment member 61 . The alignment body 62 may be formed to have the same size as the protection hole 311 . Therefore, the aligning part 6 can have an aligning function for aligning the position of the safety part 2 using the aligning member 61, and at the same time, using the aligning body 62, the protection part ( 3) can be equipped with a guide function to guide the movement of the safety part (2) inside. For example, when the alignment part 6 and the protection hole 311 are formed in a circular shape, the alignment body 62 may be formed in a cylindrical shape having the same diameter as the protection hole 311 . In this case, in the alignment member 61, the portion formed with the maximum diameter is formed with the same diameter as the protection hole 311, and the diameter decreases as it extends from the portion formed with the maximum diameter toward the first direction (FD arrow direction). can be formed to

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of

1: Safety device for injection molding machine 2: Safety part
3: protection part 4: lock part
5: support part 6: alignment part
21: safety member 22: first coupling member
31: protective member 32: second coupling member
51: guide surface 52: insertion groove
61: alignment member 62: alignment body
611: alignment surface 100: injection molding machine
110: injection device 120: clamping device
121: fixed platen 122: movable platen
123: moving part 123a: first moving mechanism
123b: second moving mechanism 123c: cylinder rod

Claims (17)

a protection part 3 coupled to the injection molding machine 100 so as to protrude from the fixed template 121 of the injection molding machine 100;
a safety part 2 having one side coupled to the injection molding machine 100 so as to move together with the movable platen 122 of the injection molding machine 100 and the other side inserted into the protection part 3;
a locking part (4) for selectively blocking the movement of the safety part (2) to selectively block the movement of the movable platen (122); and
and a support part (5) movably coupled to the protection part (3) so as to support the other side of the safety part (2) inside the protection part (3). The method of claim 1,
The safety part 2 includes a safety member 21 that moves to protrude from the fixed template 121 in the first direction as the movable template 122 moves in the first direction toward the fixed template 121. including,
When the safety member 21 is moved to the maximum distance in the first direction together with the movable template 122, the other end facing the first direction is spaced apart from the fixed template 121 by a first distance,
The protection part 3 includes a protection member 31 protruding toward the first direction,
The protection member 31 is coupled to the injection molding machine 100 so as to protrude from the fixed template 121 toward the first direction by a second distance longer than the first distance. Device. According to claim 1,
The safety part 2 is a first coupled to the movable part 123 so as to move together with the movable template 122 as the movable part 123 of the injection molding machine 100 moves the movable template 122 . One coupling member 22, and one side coupled to the first coupling member 22 and the other side for an injection molding machine, characterized in that it comprises a safety member 21 inserted into the inside of the protection part (3) safety device. 4. The method of claim 3,
The first coupling member 22 is coupled to the first moving mechanism 123a of the moving part 123 and positioned above the first moving mechanism 123a coupled to the moving platen 122 . Safety device for injection molding machine, characterized in that coupled to the first moving mechanism (123a). 4. The method of claim 3,
The protection part 3 includes a second coupling member 32 coupled to the second moving mechanism 123b of the moving part 123 , and the second coupling member 32 to protrude from the fixed template 121 . Including a protective member 31 coupled to,
The second coupling member 32 is a safety for injection molding machine, characterized in that coupled to the second moving mechanism (123b) so as to be located above the second moving mechanism (123b) coupled to the fixed template (121) Device. According to claim 1,
The protection part 3 includes a protection member 31 protruding from the fixed template 121, and a protection hole 311 formed to penetrate the protection member 31,
The safety part 2 includes a safety member 21 having one side coupled to the injection molding machine 100 and the other side inserted into the protection hole 311,
The support part 5 supports the safety member 21 so that the outer surface 21a of the safety member 21 moves away from the inner surface 31a of the protection member 31, but the protection member ( A safety device for an injection molding machine, characterized in that it is inserted into the protection hole (311) so as to be movable in the interior of 31). 7. The method of claim 6,
The support part 5 is configured such that the safety member 21 moves in a straight line along a first direction from the movable platen 122 toward the fixed platen 121 and a second direction opposite to the first direction. Includes a guide surface 51 in contact with the inner surface (31a) of the protective member (31),
The guide surface (51) is a safety device for an injection molding machine, characterized in that it is guided to the inner surface (31a) of the protection member (31) so as to move in a straight line in the first direction and the second direction. 7. The method of claim 6,
The support (5) is a safety device for an injection molding machine, characterized in that it is formed to have a weaker hardness than the protection member (31). 7. The method of claim 6,
The safety member 21 includes a protruding member 213 protruding toward the support 5,
The support part 5 includes an insertion groove 52 into which the protruding member 213 is inserted, wherein the outer surface 21a of the safety member 21 is spaced apart from the inner surface 31a of the protection member 31 . A safety device for an injection molding machine, characterized in that it supports the protruding member (213) inserted into the insertion groove (52) so as to move to the state. According to claim 1,
The safety part 2 includes a safety member 21 having one side coupled to the injection molding machine 100 and the other side inserted into the protection part 3,
The safety member 21 includes a protruding member 213 protruding from the movable platen 122 in the first direction toward the fixed platen 121,
The support part 5 includes an insertion groove 52 into which the protruding member 213 is inserted,
When the length 5a of the support part 5 is L (L is a real number greater than 0) as the length of the insertion groove 52 in the first axial direction parallel to the first direction, the first It is formed with a length 52b of 0.5L or more and 0.8L or less based on the axial direction,
The protrusion member 213 is a safety device for an injection molding machine, characterized in that it is formed with a length (213b) of 0.5L or more and 0.8L or less based on the first axial direction (X-axis direction). According to claim 1,
The safety part 2 includes a safety member 21 having one side coupled to the injection molding machine 100 and the other side inserted into the protection part 3,
The safety member 21 includes a protruding member 213 protruding from the movable platen 122 in the first direction toward the fixed platen 121,
The support part 5 includes an insertion groove 52 into which the protruding member 213 is inserted,
The safety device for an injection molding machine, characterized in that the protrusion member (213) is formed to have a larger diameter than that of the insertion groove (52). The method of claim 1,
The safety part 2 includes a safety member 21 having one side coupled to the injection molding machine 100 and the other side inserted into the protection part 3,
The safety member 21 includes a protrusion member 213 protruding from the movable platen 122 toward the fixed platen 121 in a first direction, and a blocking protrusion 212 for being supported by the locking part 4 . ), including
The support part 5 includes an insertion groove 52 into which the protruding member 213 is inserted,
The protruding member 213 is formed to have a larger diameter than the blocking protrusion 212,
The insertion groove (52) is a safety device for an injection molding machine, characterized in that it is formed to have a larger diameter than the blocking projection (212). According to claim 1,
an alignment part (6) coupled to the safety part (2);
The safety part 2 moves in a first direction from the movable template 122 toward the fixed template 121 and in a second direction opposite to the first direction as the movable template 122 moves,
The safety device for an injection molding machine, characterized in that the alignment part (6) is coupled to the safety part (2) at a position spaced apart from the support part (5) toward the second direction. 14. The method of claim 13,
The alignment part 6 is positioned outside the protection part 3 as the movable template 122 moves in the second direction and as the movable template 122 moves in the first direction. The safety device for injection molding machine, characterized in that it is located inside the protection part (3), and includes an alignment member (61) formed to decrease in size as it extends in the first direction. 15. The method of claim 14,
The aligning member (61) is a safety device for an injection molding machine, characterized in that the aligning surface (611) arranged to face the first direction is formed to form an inclined surface or a curved surface. According to claim 1,
The locking part 4 is a locking position in contact with the safety part 2 to block the movement of the movable platen 122 and spaced apart from the safety part 2 to allow the movement of the movable platen 122. Safety device for injection molding machine, characterized in that it rotates between release positions. 17. The method of claim 16,
The locking part (4) is a safety device for an injection molding machine, characterized in that it rotates between the locking position and the unlocking position according to whether the doorway (130) for entering and exiting the clamping device is opened or closed.

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