JPH0629815U - Mold clamp device for tire vulcanizer - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a mold clamp device for a tire vulcanizer that does not hinder the workability of loading and unloading the mold into and from the tire vulcanizer [Structure] A mold having a central hole 8b A mold clamp device of a tire vulcanizer for fixing a mold 7 to a mounting member 8, the mold clamping device being provided on the side opposite to the mold 7 of the mold mounting member 8 and having a diameter smaller than that of the mold mounting member 8 and around a center hole 8b. Clamp plate 1 rotatable and movable up and down, a clamp rod 2 having an enlarged diameter portion 2a at one end, and the other end 2b penetrating a mold 7 or a mold mounting member 8 fixed to the clamp plate 1, and a clamp plate 1 or provided in the mold 7,
A clamp hole 3 in which a small diameter portion that locks the enlarged diameter portion 2a of the clamp rod 2 and a large diameter portion that allows the enlarged diameter portion 2a to pass therethrough are provided in series, and a rotation means 4 of the clamp plate 1 housed within the diameter of the clamp plate 1.
And the lifting and lowering means 5,
The workability of loading / unloading the mold 7 into / from the tire vulcanizer is not hindered.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mold clamp device of a tire vulcanizer for fixing a mold to a mold mounting member, and particularly to a workability of loading and unloading the mold into and from the tire vulcanizer. Regarding what is not.

[0002]

[Prior art]

 First, the tire vulcanizer will be described with reference to FIG. In FIG. 6, the press frame of this tire vulcanizer is composed of an upper frame 31, a lower frame 32 and side frames 33, and a lower mold 35 is attached to the lower frame 32 via a lower mold mounting member 34. Is fixed. The upper mold 36, which can be opened and closed by the lower mold 35, is fixed to the upper mold mounting member 37, and the upper mold mounting member 37 includes an elevating cylinder 40 provided on a side portion of the upper frame 31. The end of the piston rod 40a is fixed. By operating the lifting cylinder 40, the upper mold mounting member 37 can be lifted and lowered along the vertical lifting guide 41 provided on the side frame 33. A pressure transmission rod 43 is erected on the upper mold mounting member 37, and a pressure cylinder 45 for transmitting a pressure to the pressure transmission rod 43 is fixedly mounted on the upper frame 31.

Next, referring to FIG. 7, a conventional upper and lower mold clamp device used in the above-mentioned tire vulcanizer will be described. In FIG. 7, the lower mold clamp device 51 is provided with a lower bayonet ring 52 which is arranged on the outer periphery of the lower mold mounting member 34 so as to be rotatable and vertically movable, and a lower clamp plate 53 which is fixed to a lower mold 35. As shown in the pull-out cross-sectional view (a), the lower bayonet ring 52 has teeth 52a and notches 52b arranged at equal intervals on the inner periphery of the lower bayonet ring 52. On the outer peripheral portion of 53, teeth 53a passing through the notch 52b are arranged in a row. In this lower mold clamp device 51, the teeth 53a of the lower clamp plate 53 are passed through the cutouts 52b of the lower bayonet ring 52, and the lower bayonet ring 52 is rotated by one pitch of the teeth 52a by a drive device or the like not shown. Then, the lower bayonet ring 52 is pulled down by the lower clamp cylinder 54, the lower ends of the teeth 52a and the upper ends of the teeth 53a are engaged, and the lower mold 35 can be fixed to the lower mold mounting member 34. The upper mold clamp device 56 is also provided with an upper bayonet ring 57 and an upper clamp plate 58. By rotating and moving the upper bayonet ring 57, the upper mold 36 is attached to the upper mold mounting member. It can be fixed to 37.

[0004]

[Problems to be solved by the device]

 The mold clamp device of FIG. 7 described in the related art includes the bayonet rings 52 and 57 arranged on the outer circumferences of the mold mounting members 34 and 37, and the clamp plates 53 and 58 that can be engaged and disengaged with the bayonet rings 52 and 57. Since the molds 35 and 36 are fixed to the mold mounting members 34 and 37 by, the outer diameters of the clamp plates 53 and 58 fixed to the molds 35 and 36 are set to the outside of the mold mounting members 34 and 37. It should be approximately the same as the diameter. For this reason, the molds 35 and 36 must be carried in and out of the tire vulcanizer with the clamp plates 53 and 58 having large outer diameters fixed to the molds 35 and 36. It has the problem of getting worse.

The present invention has been made in view of the above problems of the conventional technique, and an object of the present invention is to impair the workability of loading / unloading a mold into / from a tire vulcanizer. An object of the present invention is to provide a mold clamp device that does not cause damage.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned object, a mold clamp device of a tire vulcanizer of the present invention is a mold clamp device of a tire vulcanizer for fixing a mold to a mold mounting member having a center hole. A clamp plate that is provided on the side opposite to the mold of the mounting member and that is smaller in diameter than the mold mounting member and that can rotate around the central hole and can be moved up and down. The clamp plate that penetrates the fixed mold mounting member, the clamp plate that is provided in the clamp plate or the mold, and the clamp hole that connects the small diameter part that locks the expanded diameter part of the clamp rod and the expanded diameter part that passes through the clamp plate It is provided with a rotating means and an elevating means of the clamp plate housed within the diameter of the.

[0007]

[Action]

 By raising and lowering the clamp plate with the lifting means, the expanded part of the clamp rod is passed through the expanded part of the clamp hole, and by rotating the clamp plate with the rotating means, the expanded part of the clamp rod is expanded and the clamp hole is opened. The small diameter part of the clamp rod is rotated up to the small diameter part, and the clamp plate is lowered by the elevating means so that the expanded diameter part of the clamp rod is engaged with the small diameter part of the clamp hole, thereby fixing the mold to the mold mounting member.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a lower mold clamping device of a tire vulcanizer of the present invention, and FIG. 2 is a sectional view taken along the line AA of FIG.

1 and 2, the lower mold clamp device includes a clamp plate 1 that is rotatable and can be moved up and down, a clamp rod 2, a clamp hole 3 provided in a lower mold 7, and a clamp plate 1. The motor 4 is a rotating means, and the cylinder 5 is a lifting means for the clamp plate 1.

The clamp plate 1 has a smaller diameter than the lower mold mounting member 8 and is provided on the lower side of the lower mold mounting member 8, and has a gear portion 1a, a vertically elongated vertically elongated hole portion 1b in the circumferential direction, and It has a through hole 1c. The gear portion 1a meshes with a gear 11 connected to the motor 4, an end portion 6a of the piston rod 6 of the cylinder 5 is inserted into the elevating long hole portion 1b, and a pressure receiving rod 12 is inserted into the through long hole portion 1c. Is loosely inserted.

The clamp rod 2 is loosely inserted into a circumferentially long through-slot 8a provided in the lower mold mounting member 8 in the circumferential direction, and an enlarged diameter portion 2a is provided at one end thereof. The other end 2b is fixed to the clamp plate 1, and the clamp rod 2 is adapted to rotate and move up and down as the clamp plate 1 rotates and moves up and down. The clamp hole 3 is formed by connecting a small diameter portion 14 and an enlarged diameter portion 15 continuously in the circumferential direction of the lower mold 7, and the small diameter portion 14 has an upper surface 14a thereof which engages the enlarged diameter portion 2a of the clamp rod 2. The expanded diameter portion 15 can be passed through the expanded diameter portion 2a of the clamp rod 2.

The motor 4 and the cylinder 5 are housed within the diameter of the clamp plate 1, and the clamp plate 1 is rotated around the center hole 8 b of the lower mold mounting member 8 by operating the motor 4. By operating the cylinder 5, the cylinder 5 is moved up and down.

Next, a procedure for fixing the lower mold by the lower mold clamp device having the above-described structure will be described. The lower mold 7 is hung by a forklift or the like, carried into the tire vulcanizer, and placed on the lower mold mounting member 8. Then, the piston rod 6 of the cylinder 5 is extended to raise the clamp plate 1 to raise the enlarged diameter portion 2a of the clamp rod 2 and pass the enlarged diameter portion 15 of the clamp hole 3. Then, by rotating the motor 4 to rotate the clamp plate 1, the expanded diameter portion 2a of the clamp rod 2 is expanded from the first position shown by the solid line in FIG. It moves to the 2nd position shown by the dashed-two dotted line on 14. At this time, the through slot 8a of the lower mold mounting member 8 and the elevating slot 1b and the through slot 1c of the clamp plate 1 are laterally long in the circumferential direction, and the clamp rod 2 and the piston rod respectively. The end 6a of the pad 6 and the pressure receiving rod 12 do not interfere with each other.

Further, the piston rod 6 of the cylinder 5 is contracted and the clamp plate 1 is lowered to lower the expanded diameter portion 2 a of the clamp rod 2 and the expanded diameter portion 2 a to the small diameter portion 14 of the clamp hole 3. The lower mold 7 is fixed to the lower mold attachment member 8 by engaging with the upper surface 14a of the lower mold 7. Further, the opening from the lower mold mounting member 8 of the lower mold 7 can be performed in the reverse procedure.

As described above, the motor 4 and the cylinder 5 raise / lower and rotate the expanded diameter portion 2a of the clamp rod 2 via the clamp plate 1 to engage and disengage the upper surface 14a of the small diameter portion 14 of the clamp hole 3. The lower mold 7 is fixed to and released from the lower mold mounting member 8. Among the clamp plate 1, the clamp rod 2, the clamp hole 3, the motor 4 and the cylinder 5, which constitute the lower mold clamp device, The lower die 7 is only provided with the clamp hole 3 at the lower end, and its position is within the diameter of the lower die 7, and the clamp plate 1, the clamp rod 2, the motor 4 and the cylinder 5 are in the lower mold. It is provided on the side opposite to the lower die 7 of the mounting member 8, and they are housed within the diameter of the lower mold mounting member 8. Therefore, when loading / unloading the lower mold 7 into / from the tire vulcanizer, the presence of the lower mold clamp device does not hinder the work, and the loading / unloading can be smoothly performed.

In the above embodiment, the lower mold is provided with the clamp hole, and the clamp plate is fixed to the clamp plate. However, FIG. 3 and FIG. 4 (BB sectional view of FIG. 3) are shown. As shown, it is possible to provide the clamp hole 3 in the clamp plate 1 and fix the clamp rod 2 to the lower mold 7. In this case, the clamp plate 1 is moved up and down by the motor 4 and the cylinder 5, and the lower surface 14b of the small diameter portion 14 of the clamp hole 3 is engaged with and disengaged from the enlarged diameter portion 2a of the clamp rod 2. The mold 7 can be fixed / opened to the lower mold mounting member 8. Further, in this case, if a plurality of clamp holes 3 are provided in the radial direction (in the figure, those provided in three stages are shown), it becomes possible to cope with various molds having different sizes.

Further, the enlarged diameter portion 15 of the clamp hole 3 and the enlarged diameter portion 2a of the clamp rod 2 are not limited to the circular shape as shown in the above embodiment, and for example, as shown in FIG. Of course, the quadrangular shape as shown and the polygonal shape as shown in FIG.

Although the lower mold clamp device has been described in each of the above embodiments, the upper mold clamp device may have the same configuration. Further, in FIG. 6, a tire vulcanizer of the type in which the upper mold is vertically moved up and down and opened and closed by the lower mold is shown, but the mold clamp device of the present invention is not limited to this type of tire vulcanizer. It can also be applied to a tire vulcanizer of the type in which the upper mold rotates up and down and the lower mold opens and closes.

[0019]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. Among the clamp plate, the clamp rod, the clamp hole, the rotating means, and the elevating means that compose the mold clamp device, the mold is only provided with the clamp hole or the clamp rod at the end, and the position thereof is the metal. Within the diameter of the mold, the others are provided on the side opposite to the mold of the mold mounting material, and they are contained within the diameter of the mold mounting member. Therefore, when the mold is carried in and out of the tire vulcanizer, the presence of the mold clamp device does not hinder the work, and the carrying in and out can be smoothly performed.

[Brief description of drawings]

FIG. 1 is a sectional view of a lower mold clamp device of a tire vulcanizer of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view of another lower mold clamp device.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a view showing another clamp hole and a clamp rod.

FIG. 6 is a view showing a tire vulcanizer.

FIG. 7 is a cross-sectional view of a conventional mold clamp device.

[Explanation of symbols]

 1 Clamp plate 2 Clamp rod 2a Expanded part of clamp rod 3 Clamp hole 4 Motor (rotating means) 5 Cylinder (elevating means) 7 Lower mold 8 Lower mold mounting member 14 Small diameter part of clamp hole 15 Expanded part of clamp hole

Claims (1)

[Scope of utility model registration request] 1. A mold clamp device of a tire vulcanizer for fixing a mold to a mold mounting member having a central hole, the mold clamp device being provided on the side opposite to the mold of the mold mounting member and having a smaller diameter than the mold mounting member. With a clamp plate that can rotate around the center hole and that can move up and down, and an enlarged diameter portion at one end,
The clamp rod that penetrates the mold mounting member, the other end of which is fixed to the mold or clamp plate, and the large diameter part that passes through the small diameter part that is provided on the clamp plate or the mold and that locks the enlarged diameter part of the clamp rod, are connected. A mold clamp device for a tire vulcanizer, comprising: a clamp hole provided; and a rotating means and an elevating means for the clamp plate housed within the diameter of the clamp plate.