阅读说明：本技术 注塑成型机 (Injection molding machine ) 是由 牧育广 于 2019-07-11 设计创作，主要内容包括：本发明提供一种注塑成型机。注塑成型机(10)具备能使安全门(18)沿注塑成型机(10)的金属模具的开闭方向滑动地对安全门(18)进行导向的导向部(20),导向部(20)具备被固定于注塑成型机(10)的底座(15)的第一导向部(30)、相对于第一导向部(30)设置于安全门(18)的关闭方向侧且相对于底座(15)能拆卸地设置的第二导向部(32)、以能使第二导向部(32)移动到第一导向部(30)的上方侧的方式连结第一导向部(30)和第二导向部(32)连结的连结部。(The invention provides an injection molding machine. The injection molding machine (10) is provided with a guide part (20) which can make the safety door (18) slide along the opening and closing direction of a metal mold of the injection molding machine (10) and guide the safety door (18), the guide part (20) is provided with a first guide part (30) fixed on a base (15) of the injection molding machine (10), a second guide part (32) which is arranged at the closing direction side of the safety door (18) relative to the first guide part (30) and is detachably arranged relative to the base (15), and a connecting part which can connect the first guide part (30) and the second guide part (32) in a mode of moving the second guide part (32) to the upper side of the first guide part (30).)

1. An injection molding machine having a safety door, characterized in that,

the safety door guide device is provided with a guide part for guiding the safety door in a mode of enabling the safety door to slide along the opening and closing direction of a metal mold of the injection molding machine,

the guide portion includes:

a first guide portion fixed to a base of the injection molding machine;

a second guide portion provided on a closing direction side of the safety door with respect to the first guide portion and detachably provided with respect to the base; and

and a connecting portion that connects the first guide portion and the second guide portion so that the second guide portion can be moved to a position above the first guide portion.

2. The injection molding machine of claim 1,

the second guide portion includes a stopper that prevents the safety door from moving in the closing direction when the safety door is positioned on the opening direction side and the second guide portion moves to a predetermined position above the first guide portion.

3. The injection molding machine of claim 2,

the predetermined position is a position where the second guide portion overlaps with respect to the first guide portion,

when the second guide portion is located at the predetermined position, the stopper prevents the safety door from moving in a closing direction.

4. The injection molding machine according to claim 2 or 3,

the stopper is an end portion of the second guide portion located at the predetermined position on the opening direction side of the safety door.

5. The injection molding machine according to any one of claims 1 to 4,

the connecting portion is a hinge.

6. The injection molding machine according to any one of claims 1 to 4,

the connecting portion is a link mechanism.

Technical Field

The present invention relates to an injection molding machine having a safety door.

Background

Japanese patent application laid-open No. h 06-297534 discloses a rear safety door device of an injection molding machine, which includes a guide portion for guiding a safety door so that the safety door can slide in an opening/closing direction of a mold of the injection molding machine.

However, the rear safety door device disclosed in japanese patent application laid-open No. h 06-297534 has a problem that the guide portion interferes with the operation of the internal device of the injection molding machine when the operator opens the safety door, and the operability cannot be improved.

Disclosure of Invention

An aspect of the present invention is an injection molding machine having a safety door, including a guide portion that slidably guides the safety door in a mold opening and closing direction of the injection molding machine, the guide portion including a first guide portion fixed to a base of the injection molding machine, a second guide portion provided on a side of the first guide portion in a closing direction of the safety door and detachably provided with respect to the base, and a coupling portion that couples the first guide portion and the second guide portion so that the second guide portion can move to an upper side of the first guide portion.

According to the present invention, the guide portion does not interfere with the operation of the internal device of the injection molding machine when the operator opens the safety door, and the operability can be improved.

The above objects, features and advantages will be readily apparent from the following description of the embodiments with reference to the accompanying drawings.

Drawings

Fig. 1 is a perspective view showing a safety door of an injection molding machine according to an embodiment of the present invention and a state in which the safety door is closed.

Fig. 2 is a perspective view showing a state in which a safety door of an injection molding machine according to an embodiment of the present invention is opened and the safety door is closed.

Fig. 3 is a diagram showing a state in which the safety door of the injection molding machine according to the embodiment of the present invention is opened and the second guide portion is positioned at the guide position.

Fig. 4 is a diagram showing a state in which the safety door of the injection molding machine according to the embodiment of the present invention is opened and the second guide portion is positioned above the first guide portion.

Fig. 5 is a diagram showing a state in which the safety door of the injection molding machine according to the embodiment of the present invention is opened and the second guide portion is folded with respect to the first guide portion.

Fig. 6 is a diagram showing a state in which the safety door of the injection molding machine according to the first example of the modification is opened and the second guide portion is positioned at the guide position.

Fig. 7 is a diagram showing a state in which the safety door of the injection molding machine according to the first example of modification 1 is opened and the second guide portion is folded with respect to the first guide portion.

Fig. 8 is a diagram showing a state in which the safety door of the injection molding machine according to the second example of modification 1 is opened and the second guide portion is positioned at the guide position.

Fig. 9 is a diagram showing a state in which the safety door of the injection molding machine according to the second example of modification 1 is opened and the second guide portion is folded with respect to the first guide portion.

Fig. 10 is a diagram showing a state in which the movement of the safety door of the injection molding machine of modification 2 to the closing direction side is blocked by the second guide portion located above the first guide portion.

Fig. 11A is a schematic view showing a state where a safety door of the injection molding machine according to the first example of modification 3 is closed. Fig. 11B is a view schematically showing a state in which the safety door of the injection molding machine according to the first example of modification 3 is opened, and a process of moving the second guide portion onto the first guide portion. Fig. 11C is a diagram schematically showing a state in which the safety door of the injection molding machine according to the first example of modification 3 is opened and the second guide portion is overlapped with the first guide portion.

Fig. 12A is a diagram schematically showing a state in which a safety door of an injection molding machine according to a second example of modification 3 is closed. Fig. 12B is a diagram schematically showing a process of moving the second guide portion onto the first guide portion while the safety door of the injection molding machine according to the second example of modification 3 is opened. Fig. 12C is a diagram schematically showing a state in which the safety door of the injection molding machine according to the second example of modification 3 is opened and the second guide portion is overlapped with the first guide portion.

Detailed Description

The injection molding machine of the present invention will be described in detail below with reference to the accompanying drawings by referring to appropriate embodiments.

[ embodiment ]

Fig. 1 and 2 schematically show an overall configuration of an injection molding machine 10 as an example of an injection molding machine according to the present invention. Hereinafter, the XYZ stereotactic orthogonal coordinate system shown in fig. 1 will be described as appropriate.

As shown in fig. 1 and 2, the injection molding machine 10 includes a mold clamping device 14, an injection device 16, and a base 15.

The mold clamping device 14 is a device that opens and closes a mold during injection molding to generate a mold clamping force. The opening and closing direction of the metal mold is the X-axis direction. The mold clamping unit 14 is provided on the-X side portion of the base 15. The base 15 is provided with a first cover 13 covering the periphery of the mold clamping unit 14. An opening (not shown) is formed in a portion on the + X side of the-Y side wall of the first shield 13. The mold of the mold clamping device 14 is exposed through the opening. A safety door 19 that can open and close the opening is provided on the base 15.

The injection device 16 is a device for injecting resin through a built-in cylinder 27 at the time of injection molding. The injection device 16 is provided on the + X side portion of the base 15. A second shroud 21 is provided on the base 15 to cover the periphery of the injection device 16. An opening 11 is formed in a portion of the second shield 21 on the-Y side wall-X side. A safety door 18 capable of opening and closing the opening 11 is provided on the base 15. Fig. 1 shows a state in which the safety door 18 of the injection molding machine 10 is closed. Fig. 2 shows a state in which the safety door 18 of the injection molding machine 10 is opened.

The resin material injected from the injection device 16 is injected into a cavity (cavity) of the metal mold. The cavity is filled with a resin material, whereby a resin molded article is molded.

Here, the operator operates the operation panel 17 provided between the safety door 18 and the safety door 19 in a state where the safety door 18 and the safety door 19 are closed (a state where the corresponding opening is blocked by each safety door), starts the injection molding machine 10, and molds the resin molded product. This ensures the safety of an operator such as an operator who works near the injection molding machine 10 when the injection molding machine 10 is operated.

On the other hand, when the injection molding machine 10 is not operating, the operator appropriately opens the safety door 18 and the safety door 19 to perform operations such as maintenance and inspection of the injection device 16 and the mold clamping device 14.

As shown in fig. 3, the safety door 18 is guided so as to be movable (slidable) in the mold opening/closing direction (X-axis direction) by a guide portion 20 provided on the base 15.

The safety door 18 includes a door member 22 and a handle 24. A groove 23 extending in the X-axis direction is formed substantially over the entire region in the X-axis direction of the lower end portion of the inner (+ Y side) surface of the gate member 22.

The guide portion 20 is provided so as to project toward the-Y side with respect to the base 15. The guide portion 20 includes a first guide portion 30, a second guide portion 32 provided on the side of the first guide portion 30 in the closing direction (-X direction) of the safety door 18, and a third guide portion 35 provided on the side of the second guide portion 32 in the closing direction (-X direction) of the safety door 18.

The first guide portion 30 and the third guide portion 35 are fixed to the base 15. The second guide portion 32 is provided detachably (detachably) with respect to the base 15. The second guide portion 32 is coupled to the first guide portion 30 so as to be movable upward (+ Z direction) of the first guide portion 30 from a guide position for guiding the movement of the safety door 18 by a hinge (coupling portion) 33 (see fig. 4). However, as can be seen from fig. 4, in order to allow the second guide portion 32 to rotate relative to the first guide portion 30, the safety door 18 needs to be moved to some extent in the opening direction (+ x direction side).

As shown in fig. 3 to 5, the first guide portion 30 includes a first rail 34 fitted in the groove portion 23 of the safety door 18. The safety door 18 is slidable in the X-axis direction with respect to the first guide rail 34.

As shown in fig. 3, the second guide portion 32 includes a second rail 36 that fits into the groove portion 23 of the safety door 18 when positioned at the guide position. The safety door 18 is slidable in the X-axis direction with respect to the second guide rail 36 when the second guide portion 32 is located at the guide position.

As shown in fig. 3 to 5, the third guide portion 35 includes a third rail 37 fitted in the groove portion 23 of the safety door 18. The safety door 18 is slidable in the X-axis direction with respect to the third rail 37.

When the second guide portion 32 is located at the guide position, the first rail 34, the second rail 36, and the third rail 37 substantially constitute one rail that slidably guides the safety door 18 (see fig. 3).

The operator manually opens the safety door 18 (see fig. 2) to perform work with respect to the injection device 16. Then, the operator rotates the second guide portion 32 (see fig. 3) located at the guide position with respect to the first guide portion 30 (see fig. 4) and folds it with respect to the first guide portion 30 (overlaps the first guide portion 30, see fig. 5). This allows the guide portion 20 to have an opening 50 corresponding to the length of the second guide portion 32, and the operator can easily visit the injection device 16 through the opening 50. That is, the guide portion 20 does not become an obstacle when the operator performs work on the injection device 16, and workability is improved. The end of the second guide portion 32 on the + X side folded back with respect to the first guide portion 30 (more specifically, the end 36A of the second rail 36 on the + X side) faces the end face of the safety door 18 on the-X side. At this time, even if an external force toward the closing direction (the (-X direction) side (for example, an external force in the case where another operator erroneously closes the safety door 18) acts on the safety door 18, the-X side end surface of the safety door 18 hits the + X side end portion of the second guide portion 32 (more specifically, the + X side end portion 36A of the second rail 36). This prevents the safety door 18 from moving in the closing direction. As a result, the operator can be prevented from closing the safety door 18 during the operation, and the safety door 18 can be prevented from interfering with the operation of the operator.

That is, the second guide portion 32 has a stopper that prevents the safety door 18 from moving in the closing direction side when the safety door is positioned on the opening direction side and the second guide portion 32 moves to a predetermined position on the upper side of the first guide portion 30. The predetermined position is a position where the second guide portion 32 overlaps the first guide portion 30, and the stopper prevents the safety door 18 from moving toward the closing direction (-X direction) when the second guide portion 32 is located at the predetermined position. The stopper is an end portion on the opening direction (+ X direction) side of the second guide portion 32 (more specifically, an end portion 36A on the + X side of the second rail 36) at the predetermined position.

As described above, the operator appropriately opens the safety door 19 when the injection molding machine 10 is not operating, and performs operations such as maintenance and inspection of the mold clamping device 14. Therefore, a guide portion having the same configuration as the guide portion 20 that slidably guides the safety door 19 in the opening/closing direction (X-axis direction) of the mold may be provided. This prevents the guide from interfering with the operation of the mold apparatus 14 by the operator, thereby improving the operability.

[ modified examples ]

The structure of the injection molding machine 10 described in the above embodiment can be changed as appropriate.

(modification 1)

In the above embodiment, the end 36 on the + X side of the second guide rail 36 of the second guide portion 32 folded with respect to the first guide portion 30 is used as a stopper for stopping the movement of the safety door 18 to the-X side, but the present invention is not limited thereto.

(first example)

For example, in the injection molding machine 10A of the first example of modification 1 shown in fig. 6, a protruding member 39 protruding in the-X direction is provided at a corner portion on the-Y side and the + Z side of the end surface on the-X side of the second guide rail 36 of the second guide portion 32 located at the guide position. A notch portion 41 fitted to the protrusion member 39 is provided at a corner portion on the-Y side and the + Z side of the + X side end surface of the third rail 37 of the third guide portion 35. Thus, when the second guide portion 32 is located at the guide position, there is no step between the second rail 36 and the third rail 37, and a function as a series of rails can be ensured. According to the first example of modification 1, when the second guide portion 32 is folded with respect to the first guide portion 30, the protruding member 39 faces the-X-side end surface of the safety door 18 in the X-axis direction (see fig. 7). At this time, the protruding member 39 functions as a stopper that prevents the safety door 18 from moving in the closing direction (-X direction).

(second example)

For example, in an injection molding machine 10B of a second example of modification 1 shown in fig. 8, a protruding member 43 protruding in the-X direction is provided in a portion on the + Z side of the-X side end surface of a portion of the second guide portion 32 located at the guide position other than the second guide rail 36. A notch portion 45 (see fig. 9) fitted to the projecting member 43 is provided in a portion on the + Z side of the end surface on the + X side of the portion of the third guide portion 35 other than the third rail 37. The flat plate member 25 is provided at a corner portion on the-X side and the-Z side of the inner (+ Y side) surface of the door member 22 so as to be orthogonal to the X-axis direction (see fig. 9). According to the second example of modification 1, when the second guide portion 32 is folded with respect to the first guide portion 30, the protruding member 43 faces the flat plate member 25 in the X-axis direction (see fig. 9). At this time, the protruding member 43 functions as a stopper that prevents the safety door 18 from moving in the closing direction (-X direction).

(modification 2)

In the above embodiment and modification 1, the second guide 32 is folded with respect to the first guide 30 to prevent the safety door 18 from moving toward the closing direction (-X direction), but the invention is not limited thereto. For example, in an injection molding machine 10C according to modification 2 shown in fig. 10, the second guide portion 32 moved to the first guide portion 30 is positioned at a position (predetermined position) at a predetermined angle greater than 0 ° with respect to the first guide portion 30. In this case, the end portion of the second guide portion 32 on the safety door 18 side can function as a stopper for preventing the movement of the safety door 18 in the closing direction (-X direction).

(modification 3)

In the above-described embodiment and the modifications, the first guide portion 30 and the second guide portion 32 are coupled by the hinge 33, but the present invention is not limited thereto.

(first example)

For example, as in an injection molding machine 10D of a first example of modification 3 shown in fig. 11A, adjacent end portions of the first guide portion 30 and the second guide portion 32 may be coupled to each other by a link mechanism (coupling portion) 44. The link mechanism 44 includes a link having one end rotatably connected to the-X-side end of the first guide portion 30 and the other end rotatably connected to the + X-side end of the second guide portion 32 located at the guide position. In this case, the operator can overlap the second guide portion 32 with respect to the first guide portion 30 by lifting and rotating the second guide portion 32 located at the guide position (see fig. 11B) (see fig. 11C).

(second example)

For example, as in an injection molding machine 10E of a second example of modification 3 shown in fig. 12A, the end portion on the-X side of the first guide portion 30 and the intermediate portion of the second guide portion 32 may be linked by a link mechanism (linking portion) 46. The link mechanism 46 includes a link having one end rotatably connected to the-X-side end portion of the first guide portion 30 and the other end rotatably connected to the X-axis direction intermediate portion of the second guide portion 32 located at the guide position. In this case, the operator can lift the second guide 32 located at the guide position and move the second guide 32 toward the safety door 18 (+ X side) (see fig. 12B), thereby allowing the second guide 32 to overlap the first guide 30 (see fig. 12C). Instead of the link mechanism 46, a link mechanism may be used which includes an intermediate portion having one end rotatably connected to the first guide portion 30 in the X axis direction and an end portion having the other end rotatably connected to the + X side of the second guide portion 32 located at the guide position.

(modification 4)

The structures of the safety door 18 and the guide 20 described in the above embodiments and modifications may be changed as appropriate. In short, any structure may be used as long as the safety door 18 is slidably guided in the X-axis direction by the guide 20. For example, a guide rail may be provided on the safety door 18, and a groove into which the guide rail is fitted may be formed in the guide portion 20.

(modification 5)

Modifications 1 to 4 can be arbitrarily combined within a range not inconsistent with the above.

[ inventions grasped from the embodiment and modifications 1 to 5 ]

The present invention is an injection molding machine 10, 10A to 10E having a safety door 18, comprising a guide part 20 for slidably guiding the safety door 18 in an opening/closing direction of a metal mold of the injection molding machine 10, 10A to 10E, wherein the guide part 20 comprises a first guide part 30 fixed to a base 15 of the injection molding machine 10, 10A to 10E, a second guide part 32 provided on a side of the first guide part 30 in a closing direction of the safety door 18 and detachably provided on the base 15, and a connecting part 33, 44, 46 for moving the second guide part 32 to a side above the first guide part 30 and connecting the first guide part 30 and the second guide part 32.

Thus, when the safety door 18 is positioned on the opening direction side, the second guide part 32 is moved to the upper side of the first guide part 30, and the opening 50 is formed in the guide part 20, so that the operator can enter the body through the opening 50 and perform the operation on the internal device 16 of the injection molding machine 10, 10A to 10E. As a result, when the operator opens the safety door 18 to perform work on the internal devices 16 of the injection molding machines 10 and 10A to 10E, the guide portion 20 does not become an obstacle, and the workability can be improved.

The second guide portion 32 may have stoppers 36A, 39, 43 that prevent the movement of the safety door 18 in the closing direction side when the safety door 18 is positioned on the opening direction side and the second guide portion 32 moves to a predetermined position on the upper side of the first guide portion 30. This makes it possible to prevent the movement of the safety door 18 in the closing direction with a simple structure (a complicated structure such as not using a restricting mechanism).

The predetermined position is a position where the second guide portion 32 overlaps the first guide portion 30, and the stoppers 36A, 39, 43 can prevent the movement of the safety door 18 in the closing direction when the second guide portion 32 is located at the predetermined position. This can reliably prevent the safety door 18 from moving in the closing direction.

The stopper may be an end 36A of the second guide 32 located at a predetermined position on the opening direction side of the safety door 18. This can simplify the structure without providing a dedicated member for preventing the second guide portion 32 from moving in the closing direction at the connection portion.

The coupling portion may be a hinge 33. Thus, the first guide part 30 and the second guide part 32 can be coupled to each other with a simple configuration so that the second guide part 32 moves to the first guide part 30.

The links may be linkages 44, 46. Thus, the first guide part 30 and the second guide part 32 can be coupled to each other with a simple configuration so that the second guide part 32 can move to the first guide part 30.