Double doors, and machine tools equipped with them

Abstract

The present invention provides a double door that can be closed precisely without the need for a rod to be installed across the opening, and a machine tool equipped with the same. [Solution] The double doors 16 consist of a first door 30 and a second door 32 that open and close an opening 20 formed between a left-side member 22 and a right-side member 24, a first hinge 34 that rotatably attaches the first door 30 to the left-side member 22, a second hinge 36 that rotatably attaches the second door 32 to the right-side member 24, and a catch 38 having a fastening member 44 and a fastened member 46. The fastening member 44 is placed on either the first rotation-side vertical edge 48 of the first door 30 opposite to the first pivot-side vertical edge 40 to which the first hinge 34 is attached, or the second rotation-side vertical edge 50 of the second door 32 opposite to the second pivot-side vertical edge 42 to which the second hinge 36 is attached, and the fire-stopping member 46 is placed on the other.

Description

[Technical Field]

[0001] The present invention relates to a double door characterized by the mounting position of an electromagnetic lock body, and a machine tool including the same. [Background Art]

[0002] Conventionally used machine tools such as injection molding machines and die casting machines are provided with safety doors for access such as machine maintenance and loading / unloading of molds (for example, Patent Document 1).

[0003] In addition, such a safety door may employ a double swing door (double door, hereinafter referred to as "double door") that can provide a wide frontage.

[0004] A retaining member (catch) is provided to keep both doors of the double door in a closed state. As for the position of the catch, for example, as shown in Fig. 6, a bar 5 is erected along the upper sides of both doors 3 and 4 in an opening 2 where the double door 1 is provided, and the catches 6 are respectively arranged at positions corresponding to the upper ends of the rotating side vertical sides of each door 3 and 4. [Prior Art Documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Laid-Open No. 6-293051 [Summary of the Invention] [Problem to be Solved by the Invention]

[0006] However, when such a bar is erected, the dimension of the opening in the height direction is restricted by the vertical dimension of each door of the double door, and there is a problem that it is impossible to secure an opening having a height dimension higher than the vertical dimension of the double door.

[0007] Furthermore, to address these issues, a double door 1 has been developed, as shown in Figure 7, in which the bar material 5 is eliminated and catches 6 are provided on the hinge side of both doors 3 and 4.

[0008] However, in the case of this type of double door 1, the catch 6 is located near the pivot point (hinge) of each door 3 and 4, making it difficult to adjust the catch 6. Even when the catch 6 is fully engaged, a small gap remains on the vertical side of each door 3 and 4 on the rotating side, making it difficult to close both doors 3 and 4 of the double door 1 precisely.

[0009] This invention has been made in view of the above problems, and its purpose is to provide a double door that can be closed with precision without providing a rod to span the opening, and a machine tool equipped with the same. [Means for solving the problem]

[0010] According to one aspect of the present invention, A first door and a second door that open and close an opening formed between the left-side member and the right-side member, A first hinge that rotatably attaches the first door to the left-side member, A second hinge that rotatably attaches the second door to the right-side member, It comprises a catch having a fastening member and a fastened member, The retaining member is positioned on either the first pivot-side vertical edge of the first door, opposite to the first pivot-side vertical edge to which the first hinge is attached, or the second pivot-side vertical edge of the second door, opposite to the second pivot-side vertical edge to which the second hinge is attached. The fastening member is positioned on either the first pivot-side vertical edge of the first door, opposite to the first pivot-side vertical edge to which the first hinge is attached, or the second pivot-side vertical edge of the second door, opposite to the second pivot-side vertical edge to which the second hinge is attached. Double doors are provided.

[0011] Preferably, Said catch is an electromagnetic lock.

[0012] Preferably, Two said catches are provided.

[0013] Preferably, At least one of said catches is an electromagnetic lock.

[0014] According to another aspect of the present invention, There is provided a machine tool comprising the double door described above. Effects of the Invention

[0015] According to the double door of the present invention, the catch is provided at the first pivot-side vertical edge of the first door and the second pivot-side vertical edge of the second door, that is, at a position far from the fulcrum (hinge) of each door. Therefore, it is possible to provide a double door that can accurately close both doors without providing a bar member installed across the opening. Brief Description of the Drawings

[0016] [Figure 1] It is a front view showing an example of the machine tool 10 according to the embodiment (a state where the double door 16 is closed). [Figure 2] It is a front view showing an example of the machine tool 10 according to the embodiment (a state where only the second door 32 of the double door 16 is opened). [Figure 3] It is a front view showing an example of the machine tool 10 according to the embodiment (a state where both doors 30 and 32 of the double door 16 are opened). [Figure 4] It is a schematic plan view showing the catch 38 according to the embodiment. [Figure 5] It is a schematic front view showing the catch 38 according to the embodiment. [Figure 6] It is a front view showing a conventional double door 1 (a state where both doors 3 and 4 of the double door 1 are opened). [Figure 7] It is a front view showing a conventional double door 1 (a state where both doors 3 and 4 of the double door 1 are opened). Mode for Carrying Out the Invention

[0017] (Configuration of Machine Tool 10) The machine tool 10 according to the present embodiment generally includes a machine base 12, an injection molding machine body 14, and a double door, as shown in FIGS. 1 to 3.

[0018] The machine base 12 is a member on which the injection molding machine body 14 and the double door are placed.

[0019] The injection molding machine body 14 is a machine tool that manufactures molded products by repeating molding cycles including mold closing, mold clamping, injection filling of molten resin, metering, mold opening, and molded product removal.

[0020] The double door is a double-opening door that opens and closes an opening 20 provided for access such as maintenance of the injection molding machine body 14 and loading / unloading of molds, and the opening 20 is formed between a left side member 22 and a right side member 24 on the machine base 12. In the present embodiment, the double door generally includes a first door 30, a second door 32, a first hinge 34, a second hinge 36, and a catch 38.

[0021] The first door 30 is a plate-shaped member that has the role of opening and closing the opening 20 in combination with the second door 32.

[0022] The first hinge 34 is attached between the first fulcrum side vertical edge 40 on the side of the first door 30 close to the left side member 22 and the left side member 22, and has the role of rotatably holding the first door 30 relative to the left side member 22. In the present embodiment, a pair of upper and lower first hinges 34 are used, but the number of first hinges 34 is not particularly limited; one first hinge 34 may be used according to the longitudinal length of the first door 30, or two or more first hinges 34 may be used.

[0023] The second hinge 36 is installed between the second pivot-side vertical edge 42, which is on the side closer to the right-side member 24, and the right-side member 24 of the second door 32, and has the role of holding the second door 32 rotatably relative to the right-side member 24. In this embodiment, a pair of upper and lower second hinges 36 are used, but the number of second hinges 36 is not particularly limited, and one second hinge 36 may be used or two or more second hinges 36 may be used depending on the vertical length of the second door 32.

[0024] The catch 38 is a component that interposes between the first door 30 and the second door 32 to fix both doors 30 and 32 in a closed state so that they do not rotate undesirably, and is composed of a retaining member 44 and a retained member 46. In this embodiment, two catches 38 are used, and an electromagnetic lock 38 is used in one of the catches 38. The electromagnetic lock 38 will be explained below with reference to Figures 4 and 5.

[0025] The fastening member 44 is a member that has the role of holding the fastened member 46, and in the catch 38 (electromagnetic lock 38) according to this embodiment, it corresponds to the electromagnetic lock body 44. The electromagnetic lock body 44 has a key fitting hole 47 into which the electromagnetic lock key 46, which is the fastened member 46, is fitted and held (locked). Holding (locking) and releasing the electromagnetic lock key 46 by the electromagnetic lock body 44 is done by operating the electromagnetic lock body 44.

[0026] Furthermore, the fastened member 46 is a member held by the fastening member 44 as described above, and in the catch 38 (electromagnetic lock 38) according to this embodiment, it corresponds to the electromagnetic lock key 46.

[0027] In this embodiment, the fastening member 44 (electromagnetic lock body 44) is attached to the first pivot-side vertical edge 48 of the first door 30, which is opposite to the first pivot-side vertical edge 40 to which the first hinge 34 is attached. The fastened member 46 (electromagnetic lock key 46) is attached to the second pivot-side vertical edge 50 of the second door 32, which is opposite to the second pivot-side vertical edge 42 to which the second hinge 36 is attached.

[0028] Of course, conversely, the fastening member 44 (electromagnetic lock body 44) may be attached to the second pivot-side vertical edge 50 of the second door 32, opposite to the second pivot-side vertical edge 42 to which the second hinge 36 is attached, and the fastened member 46 (electromagnetic lock key 46) may be attached to the first pivot-side vertical edge 48 of the first door 30, opposite to the first pivot-side vertical edge 40 to which the first hinge 34 is attached.

[0029] Furthermore, in this embodiment, an electromagnetic lock 38 (catch 38) is attached below the first rotating vertical edge 48 and the second rotating vertical edge 50, and another catch 38 is attached above the first rotating vertical edge 48 and the second rotating vertical edge 50.

[0030] This alternative catch 38 is not an electromagnetic lock 38, but rather a mechanism that allows the holder member 44 to select between a held state and a non-held state of the fastened member 46 without electrical or electromagnetic operation.

[0031] According to the double doors 16 of this embodiment, the catch 38 is provided at a position far from the pivot points (hinge 34, 36) of each door 30 and 32, namely the first rotation side vertical edge 48 of the first door 30 and the second rotation side vertical edge 50 of the second door 32. Therefore, it is possible to provide double doors 16 that can close both doors 30 and 32 accurately without providing a rod to span the opening 20.

[0032] (Variation 1) In the double doors 16 according to the embodiment described above, two catches 38 are used, one of which is an electromagnetic lock 38. However, the number of catches 38 is not particularly limited; one may be used, or three or more may be used. Furthermore, all catches 38 may be electromagnetic locks 38, or no electromagnetic locks 38 may be used at all.

[0033] (Modification 2) Furthermore, any type of catch 38 other than the electromagnetic lock 38 or the aforementioned catch 38 may be used, as long as it can hold both doors 30 and 32 closed.

[0034] (Variation 3) Furthermore, although the embodiment shows an example in which the double doors 16 are used on the injection molding machine body 14, the double doors 16 may also be applied to a die-casting machine or other machine tool 10 instead of the injection molding machine body 14.

[0035] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims rather than by the foregoing description, and all modifications within the meaning and scope equivalent to the claims are intended to be included. [Explanation of symbols]

[0036] 10... Machine tool, 12... Machine stand, 14... Injection molding machine body, 16... Double doors 20...Opening, 22...Left side member, 24...Right side member 30...First door, 32...Second door, 34...First hinge, 36...Second hinge, 38...Catch, 40...First pivot side vertical edge, 42...Second pivot side vertical edge, 44...Retaining member, 46...Retained member, 47...Key insertion hole, 48...First rotation side vertical edge, 50...Second rotation side vertical edge

Claims

1. A first door and a second door that open and close an opening formed between the left-side member and the right-side member, A first hinge that rotatably attaches the first door to the left-side member, A second hinge that rotatably attaches the second door to the right-side member, It comprises a catch having a fastening member and a fastened member, The retaining member is positioned on either the first pivot-side vertical edge of the first door, opposite to the first pivot-side vertical edge to which the first hinge is attached, or the second pivot-side vertical edge of the second door, opposite to the second pivot-side vertical edge to which the second hinge is attached. The fastening member is positioned on either the first pivot-side vertical edge of the first door, opposite to the first pivot-side vertical edge to which the first hinge is attached, or the second pivot-side vertical edge of the second door, opposite to the second pivot-side vertical edge to which the second hinge is attached. Double doors.

2. The aforementioned catch is an electromagnetic lock. The double doors according to claim 1.

3. Two of the aforementioned catches are provided. The double doors according to claim 1.

4. At least one of the catches is an electromagnetic lock. The double doors according to claim 3.

5. The vehicle is equipped with double doors as described in any one of claims 1 to 4. Machine tools.

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