KR101040807B1 - Mechanical Safety Apparatus of Injection Molding Apparatus - Google Patents

Abstract

The present invention relates to a mechanical safety device of an injection molding machine, which is advantageous to molding work by reducing unnecessary installation space, and improves safety.

The present invention provides a fixed mold plate, a movable plate installed to be movable at intervals from the fixed mold plate, a clamping member provided to move the movable plate, and an injection molding machine configured to move open and close along the rail part. As a mechanical safety device, the first and second safety bars are extended and provided on both sides of the movable plate, and the locking members for locking the first and second safety bars are rotatably installed on the sides of the fixed plate and the clamping member, respectively. The first and second door dogs are formed on both sides of the safety door to support the locking member.

The present invention having such a structure is provided with safety bars on both sides of the movable mold of the injection molding machine, and installs a locking member for locking the safety bar on each of the fixed mold and the clamping member, and locks by providing door dogs on both sides of the safety door. And it is to be made to release, while taking up less installation space to work more safely when opening the safety door, accordingly there is an effect that the molding work can be made more smoothly.

Injection molding machine, machine, safety, safety bar, moving platen, fixed platen, door dog, reduction, space

Description

Mechanical Safety Apparatus of Injection Molding Apparatus

The present invention relates to a mechanical safety device for an injection molding machine, and more particularly, to a mechanical safety device for an injection molding machine, which is advantageous for molding work and improves safety by reducing unnecessary installation space.

In general, an injection molding machine needs a safety device for the safety of the clamping operation of the mold and the ejection and management of the molded product together with the clamping device for fastening the mold. If a part of the body, or a part of the body is put in the mold, it is responsible for preventing the risk of closing the template.

Looking at the mechanical safety device of the conventional injection molding machine, as shown in Figure 1, as a basic structure of the injection molding machine, a fixed mold plate 10, and a movable mold plate that is movable to be spaced apart from the fixed mold plate 10 20 and the clamping member 30 provided to move the movable plate 20.

The column part 21 penetrates and is installed between the movable plate 20 and the clamping member 30.

In addition, the safety door 50 to be opened and closed while being guided along the rail portion 40 for safety during the molding operation is installed.

In addition, when the worker is working in the mold by opening the safety door 50, the safety bar 60 to prevent the movable die 20 is moved arbitrarily clamping member from the side of the movable die 20 It has a structure extending toward (30).

In addition, the safety bar 60 is formed with a plurality of locking projections 61 along the longitudinal direction to be caught by the locking member 70 is rotatably provided on the side of the clamping member 30, the safety door The door dog 51 extending from the side surface of the 50 is designed to support the locking member 70.

More specifically, as shown in FIG. 2A, the locking member 70 provided in the clamping member 30 includes a clamping member 30 such that the locking piece 71 is rotatable through the hinge pin 72. It is coupled to the side of, as shown in Figure 3, protruding to the side of the clamping member 30, sandwiched between the two support pieces 31 formed to be rotatably coupled structure through the hinge pin (72) Have

Since the safety bar 50 is extended and provided in a straight line, the longer the stroke of the movable body 20 is, the longer the length of the safety bar 60 is. In addition, a locking groove 73 is formed on an inner surface of the locking piece 71, and a support pin 74 protrudes and is formed on an upper portion of the locking piece 71.

In addition, the door dog 51 has a structure in which the horizontal surface 51a, the inclined surface 51b, and the horizontal connecting surface 51c are integrally formed. The horizontal surface 51a maintains a state of being supported by the lower portion of the support pin 74 that protrudes and is formed on the locking piece 71 of the locking member 70, and the door dog (when the safety door 50 is opened). The horizontal surface 51a of the 51 is moved from the lower portion of the support pin 74 of the engaging piece 71 to meet the inclined surface 51b and rotated downward by its own weight in accordance with the inclined angle to meet the connecting surface 51c. At the moment, it is to be rotated down completely vertically to lock the safety bar (60).

In the conventional injection molding machine having such a configuration, if the safety door 50 is opened for any work, the door dog 51 coupled with the safety door 50 also moves simultaneously.

The door dog 51 has a front end formed in a horizontal surface 51a, and the horizontal surface 51a protrudes above the locking piece 71 of the locking member 70 coupled to the side surface of the clamping member 30, It is supported by the lower portion of the formed support pin 74, as shown in Figure 2a, the door dog 51 moves along the horizontal surface 51a and passes through the inclined surface 51b as the safety door 50 moves. In the process of engaging the locking piece 71 begins to move downward, by its own weight around the hinge pin (72).

When it meets the connecting surface 51c in a horizontal state passing through the inclined surface 51b of the door dog 51, the locking piece 71 is moved downward and vertically, thereby obstructing the safety bar 60. Locking is performed by the machine 61.

The locking piece 71 is formed with a locking groove 73 forming a semicircle, the locking piece is caught by the locking projection 61 of the safety bar 60, and then the movable plate 20 cannot move. To maintain.

By the way, the safety device of the conventional injection molding machine, because it must be broken from one side of the safety door 50, in order to prevent the safety bar 60 is finally exposed to the outside because a separate cover (not shown) must be long There was a problem, taking up a lot of space.

Accordingly, the present invention has been invented to solve the above-mentioned conventional problems, and an object of the present invention is to provide a mechanical safety device of an injection molding machine that can safely perform work while occupying a small space.

The solution means of the present invention for achieving the above object, of the injection molding machine consisting of a fixed plate, a movable plate installed to be movable at intervals with the fixed plate, and a clamping member provided to move the movable plate. As a mechanical safety device of the injection molding machine made of a safety door to be moved to open and close along the rail,

The first and second safety bars are extended and provided respectively on both sides of the movable plate, and the locking members for locking the first and second safety bars are rotatably installed on the sides of the fixed plate and the clamping member, respectively. Both sides provide a structure in which first and second door dogs are formed to support the locking member.

The first door dog provided in the safety door comprises a horizontal surface and an inclined surface, and a connection surface formed to extend horizontally from the inclined surface and having an end portion rotatably coupled to the side of the safety door through a hinge pin. The two-door dog is a structure which consists of the horizontal surface which is bent and formed, and the inclined surface extended in this horizontal surface and inclined.

In addition, in the lower direction of the rail portion is a structure having a support for protruding, forming a support pin for supporting the first door dog in a horizontal state.

The locking member may include a locking piece, a hinge pin for allowing the locking piece to rotate, a locking groove for locking the locking protrusions of the first and second safety bars, and a first and second door dog. The structure consists of protruding support pins.

A lower portion of the clamping member has a structure in which a bracket for limiting a rotation range is stopped and installed so that the first door dog stops.

In addition, the bracket has a structure in which the stop pin protrudes and is formed.

As described above, the present invention includes safety bars on both sides of the movable mold of the injection molding machine, and installs a locking member to lock the safety bars on the stationary plate and the clamping member, respectively, and provides a door dog on both sides of the safety door to lock and As it is to be released, it takes up less installation space and can work more safely when opening the safety door, accordingly there is an effect that the molding operation can be made more smoothly.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a front view schematically showing a mechanical safety device of the injection molding machine of the present invention.

Figure 5a is a perspective view showing in detail the coupling relationship between the structure of the safety bar and the door dog and the locking member of the mechanical safety device of the injection molding machine of the present invention.

FIG. 5B is a perspective view illustrating a state in which the door dog is moved simultaneously with the opening of the safety door in the state of FIG. 5A to release the support state of the locking member so that the locking member is caught by the safety bar.

Figure 6a is a perspective view specifically showing the coupling relationship between the structure of the other safety bar and the door dog and the locking member of the mechanical safety device of the injection molding machine of the present invention.

FIG. 6B is a perspective view illustrating a state in which the supporting member of the locking member is released from the door dog and caught by the safety bar in the state of FIG. 5A.

Figure 7a is a front view schematically showing a state in which the safety door is moved the movable plate in the safety device according to the present invention.

Figure 7b is a front view schematically showing a state in which the safety door is opened in the safety device according to the present invention.

Figure 7c is a front view schematically showing a state in which the movable bar is moved in the safety device according to the present invention to lock the safety bar of the movable plate.

8 is a view showing the structure of the bracket in the safety device according to the present invention.

The same components as in the prior art will be described with the same reference numerals, detailed descriptions will be omitted, and new components will be described in detail with the new reference numerals.

The present invention, as in the prior art, the stationary plate 10, the movable plate 20 which is installed to be movable at intervals with the fixed plate 10, and the clamping member is provided so that the movable plate 20 can move It is a configuration consisting of a safety door 50 to be moved while opening and closing while being guided along the rail portion 40 of the injection molding machine consisting of (30).

Here, as shown in FIG. 4, the first and second safety bars 80 and 82 are extended and provided on both sides of the movable plate 20, and the fixed plate 10 and the clamping member 30 are provided. At each side of the first and second safety bars 80 and 82, locking members 90 and 100 are rotatably installed, and both sides of the safety door 50 are provided with the locking members. The first and second door dogs 52 and 54 are formed to support 90 and 100, respectively.

In addition, the first and second safety bars 80 and 82 have a structure in which a plurality of locking protrusions 80a and 82a are formed at intervals along the length direction. The locking protrusions 80a and 82a are not formed over the entire length of the first and second safety bars 80 and 82, as shown throughout the drawings of the present invention, and may be formed only in part.

In addition, referring to the structures of the first and second door dogs 52 and 54 provided at both sides of the safety door 50, as shown in FIGS. 5A and 6A, the first door dog 52 may be formed as follows. It consists of a horizontal surface 52a, the inclined surface 52b, the horizontal connection surface 52c, and the 2nd door dog 54 extends from the horizontal surface 54a, the vertical surface 54b, and the horizontal surface 54a which are formed by bending. And the inclined surface 54c formed to be inclined.

However, the structures of the first and second door dogs 52 and 54 have been described as an example, and any other structure can be used. For example, since the second door dog 54 does not need to have a bent structure, the vertical door 54b is not formed, and the second door dog 54 may include only the horizontal plane 54a and the inclined plane 54c.

The vertical surface 54b of the second door 54 is fixed to one side of the safety door 50 so as to interlock with each other.

In addition, as shown in Figure 4, the end of the connection surface 52c of the first door 52, that is, the portion that is connected to the side of the safety door 50, the hinge pin (52d) is coupled rotatable It is provided so as to, the support 41 is formed in the lower direction of the rail portion 40 has a structure to support the first door dog 52 in a horizontal state.

The support 41 has a support pin 42 formed on the lower surface thereof so that the connecting surface 52c of the first door dog 52 is caught.

In addition, the locking member (90, 100) is a locking piece (91) (101), the hinge pins (92) and (102) for rotating the locking piece (91) 101, respectively, and the first The locking grooves 93 and 103 and the first and second door dogs 52 and 54 can be supported by the locking protrusions 80a and 82a of the safety bars 80 and 82, respectively. It is a structure consisting of support pins (94, 104) protruding to.

In addition, the lower sides of the clamping member 30 has a structure in which the brackets 110 and 120 are fixed and installed at intervals so as to limit the range of rotation of the first door 52.

In addition, as shown in FIG. 8, the brackets 110 and 120 are bent to form horizontal planes 111 and 121 and vertical planes 112 and 122, respectively, and to the vertical planes 112 and 122. Each of the stop pins 113 and 123 has a protruding and formed structure.

Throughout the accompanying drawings, the door dogs and the safety doors are shown in dashed lines for convenience to facilitate understanding of the overall structure.

As shown in FIG. 4, the present invention having such a structure performs an operation for molding various objects as an injection molding machine, for example, an operator opens the safety door 50 to perform any operation inside the injection molding machine. In this case, the movable plate 20 moving inside the injection molding machine should be stopped in its current state.

According to the present invention, when the safety door 50 is opened, the movable mold 20 immediately stops to perform the internal work safely. As shown in FIG. 7A, the safety door 50 is secured. When the door is moved in one direction (right to left in the drawing) in the closed state, the safety door 50 is opened along the rail part 40, and the first door 52 is disposed on the side of the safety door 50. It is installed is moved at the same time as the safety door 50 moves.

Here, the horizontal surface 52a of the first door dog 52 supports the support pin 94 of the locking member 90 provided on the side surface of the clamping member 30. In this case, the locking member 90 The support pin 94 of the locking member 90 is moved to the first door dog as the first door 52 is moved by the movement of the safety door 50. After passing through the horizontal surface 52a of the 52, and then through the inclined surface 52b, it moves downwardly through the hinge pin 92 in proportion to its inclined angle.

As soon as the support pin 94 fixed by the continuous movement of the first door 52 reaches the position of the horizontal connection surface 52c past the inclined surface 52b of the first door 52, it is completely downward. The locking is performed by being caught by any one of the locking protrusions 80a of the plurality of locking protrusions 80a formed on the first safety bar 80.

At this time, the first door 52 is supported by the support pin 42 of the support 41 formed to extend in the lower direction of the rail unit 40, the first door in accordance with the movement of the safety door 50 As the dog 52 moves, the support state is released from the support pin 42, and the support state is released. At the same time, the first door 52 is rotated by its own weight about the hinge pin 52d. The horizontal plane (52a) of the) stops between the brackets 110 and 120 while moving downward, and is stopped by the stop pins 113 and 123 protruding and formed on the brackets 110 and 120.

On the other hand, as shown in Figure 7c, when opening the safety door 50 in a state in which the movable die 20 is located close to the stationary plate 10, if the safety door 50 is moved from right to left, The second door dog 54 provided on the side of the safety door 50 is also moved at the same time, in this case as shown in Figure 6a, as shown in Figure 6b, the engaging piece of the locking member (100) 101 is rotated downward through the hinge pin (102).

The second door dog 54 is formed with a horizontal surface 54a and an inclined surface 54c so that the support pin 104 of the locking piece 101 is supported by the horizontal surface 54a. As the second door 54 simultaneously moves along the inclined plane 54c of the second door dog 54 as the second door dog 54 moves downward, the support pin 104 is inclined plane. As soon as it leaves 54c, the locking piece 101 is completely moved downward so that the locking piece 101 is locked to any one of the plurality of locking protrusions 82a formed in the longitudinal direction of the second safety bar 82.

In addition, according to the present invention, as shown in FIG. 7C, when the movable die 20 is close to the stationary die 10, the first safety bar 80 provided in the movable die 20 is clamped to the clamping member 30. Since it is separated from the locking member 90 provided on the side, when the safety door 50 is opened in this state, there is a section in which the first safety bar 80 and the locking member 90 cannot be locked. , The locking of the movable plate 20 is made through the second safety bar 82 to provide safety.

Thus, the present invention by installing the safety bars on both sides of the movable plate, by installing the safety bar only in one direction as in the prior art can prevent the safety bar can be lengthened in accordance with the stroke of the movable plate, thereby reducing the protrusion length The installation space can be reduced, and work can be performed in a stable state.

Although the present invention has been described for the embodiments of the present invention based on the accompanying drawings for convenience, it is obvious that various modifications and changes are possible within the scope of the technical idea of the present invention.

1 is a front view showing a mechanical safety device of a conventional injection molding machine.

Figure 2a is a perspective view showing in detail the coupling relationship between the structure of the safety bar and the door dog and the locking member of the mechanical safety device of the conventional injection molding machine.

FIG. 2B is a perspective view illustrating a state in which the door dog is moved simultaneously with the opening of the safety door in the state of FIG. 2A to release the support state of the locking member so that the locking member is caught by the safety bar.

Figure 3 is an exploded perspective view showing a coupling structure of a conventional locking member.

Figure 4 is a front view schematically showing a mechanical safety device of the injection molding machine of the present invention.

Figure 5a is a perspective view showing in detail the coupling relationship between the structure of the safety bar and the door dog and the locking member of the mechanical safety device of the injection molding machine of the present invention.

FIG. 5B is a perspective view illustrating a state in which the door dog is moved simultaneously with the opening of the safety door in the state of FIG. 5A to release the support state of the locking member so that the locking member is caught by the safety bar.

Figure 6a is a perspective view specifically showing the coupling relationship between the structure of the other safety bar and the door dog and the locking member of the mechanical safety device of the injection molding machine of the present invention.

FIG. 6B is a perspective view illustrating a state in which the supporting member of the locking member is released from the door dog and caught by the safety bar in the state of FIG. 6A.

Figure 7a is a front view showing that in the safety device according to the present invention can be locked when opening the safety door, regardless of the position of the movable plate.

Figure 7b is a front view schematically showing a state in which the safety door is opened in the safety device according to the present invention.

Figure 7c is a front view showing the position of the safety bar when the movable die in the mold closing position in the safety device according to the present invention.

8 is a perspective view showing the structure of the bracket in the safety device according to the present invention.

[Code Description in Drawings]

10: fixed plate

20: moving plate

21: column part

30: clamping member

40: rail

41: support

42: support pin

50: safety door

51: door dog

51a: horizontal plane

51b: slope

51c: connection surface

52: first door dog

52a: horizontal plane

52b: slope

52c: connection surface

54a: horizontal surface

54b: vertical plane

54c: slope

60: safety bar

61: jamming projection

70: locking member

71: hanging piece

72: hinge pin

73: hanging groove

74: support pin

80: first safety bar

80a: Jamming protrusion

82: second safety bar

82a: protrusion

90,100: locking member

91,101: Hanging piece

92,102: Hinge pins

93,103: Hanging Groove

94,104: Support pin

110,120: Bracket

111,121 horizontal plane

112,122: vertical plane

113,123: Stop pin

Claims (6)

Injection molding machine consisting of a stationary plate 10, a movable plate 20 which is movable to be spaced apart from the fixed plate 10, and a clamping member 30 provided to move the movable plate 20. As a mechanical safety device of the injection molding machine consisting of a safety door (50) to be opened and closed along the rail portion 40 of the, The first and second safety bars 80 and 82 are extended and provided on both sides of the movable plate 20, respectively, and the first and second safety bars are formed on the side surfaces of the fixed mold plate 10 and the clamping member 30. Locking members 90 and 100 capable of locking the 80 and 82 are rotatably installed, respectively, and the first and second locking members 90 and 100 support the locking members 90 and 100 on both sides of the safety door 50. Mechanical door safety device of an injection molding machine, characterized in that the two doors 52, 54 are formed respectively. The method according to claim 1, The first door 52 provided in the safety door 50 has a horizontal surface 52a and an inclined surface 52b, which are formed to extend horizontally from the inclined surface 52b, and have an end portion at the side of the safety door 50. And a connection surface 52c rotatably coupled to the hinge pin 52d by the hinge pin 52d, and the second door dog 54 is bent to form a horizontal surface 54a and is extended to the horizontal surface 54a. Mechanical safety device of an injection molding machine, characterized in that consisting of the inclined surface (54c) is formed obliquely. The method according to claim 1, An injection molding machine is provided in the lower direction of the rail portion 40, a support 41 having a support pin 42 protruding from and supporting the first door dog 52 in a horizontal state. Mechanical safety device. The method according to claim 1, The locking members 90 and 100 may include locking pieces 91 and 101, hinge pins 92 and 102 that allow the locking pieces 91 and 101 to be rotatable, and the first, 2 so that the locking grooves 93 and 103 and the first and second door dogs 52 and 54 are supported by the locking protrusions 80a and 82a of the safety bars 80 and 82, respectively. Mechanical safety device of the injection molding machine, characterized in that consisting of protruding support pins (94, 104). The method according to claim 1 or 2, The lower part of the clamping member 30, the mechanical safety device of the injection molding machine, characterized in that the bracket which limits the rotation range to stop the first door 52 is fixed, installed. The method according to claim 5, The bracket is a mechanical safety device of the injection molding machine, characterized in that the stop pin is protruded, formed.

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