Panel clamping device

Abstract

To provide a panel clamper that can clamp even a heavy weight work-piece to enable a conveying and installing device to convey and install the work-piece and can improve safety and certainty, and has a clamp plate having a function capable of handling a work-piece even if the minimum width of the work-piece is half of the maximum width thereof.SOLUTION: A panel clamper comprises: an upper clamp plate 6a and a lower clamp plate 6b arranged in a vertical direction; a pantograph mechanism 13 constituted of four links 13a-13d rotatably connected through shafts 15 and 16 to edges of the upper clamp plate and of the lower clamp plate; guide means 2a-2d and 3a-3d that support the upper clamp plate and the lower clamp plate so that the plates freely approach or freely retreat; a screw bar 24 with rotating means that moves the pantograph mechanism so that the mechanism opens outward or closes inward to make the upper clamp plate and the lower clamp plate approach or retreat, and makes both clamp plates clamp or release the panel; and a support frame 1 that supports the upper and lower clamp plates, the pantograph mechanism, the guide means and the screw bar.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a panel clamping device, and more particularly to a panel clamping device for clamping and installing building panels such as ALC (autoclaved lightweight concrete) panels.

Background Art

[0002] In large buildings and the like, ALC panels are widely used as wall materials. In the process of installing ALC panels, due to their large weight, a lifting device is required for construction.

[0003] ALC panels generally have a width of 300 to 600 mm, a length of 5 to 6 m, and a maximum weight of about 350 kg. They are usually placed horizontally and are transported to the installation site while being lifted by a transport and installation device so as to be vertical, and then installed in the building.

[0004] As a conventional installation method, a method of hooking and lifting a sling belt to which an ALC panel is fixed with a crane or the like is known.

[0005] Also, as another method, a method is known in which a device having a large flow rate adsorption capacity is added to a transport and installation device such as a manipulator (for example, trade name: giraffe), and the ALC panel is adsorbed, lifted, transported, and installed. Here, "giraffe" refers to a new type of self-propelled transport and installation machine that is optimal for operations such as "lifting, lowering, rotating, moving, and installing" heavy objects in installation work of glass and board materials at a construction site (the same applies hereinafter).

[0006] Furthermore, a hoisting tool for a building panel is also disclosed, which includes a clamping portion having a clamping piece connected to a link, and a suspension portion capable of wire tightening attached to a slider connected to the link. The clamping piece is fitted to the panel, and the hoisting tool is lifted by a wire (see Patent Document 1).

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] In the conventional method using binding, when raising the panel, there is a risk that the lower end may be cut off at a certain point and float in the air, and the panel may swing and touch around. Positioning the panel in this state by manually guiding it requires the operator to approach the panel, which is an operation with a high risk that requires skill.

[0009] On the other hand, in the method using adsorption by a manipulator, since the panel can be stationary in an arbitrary posture, safety is improved. However, for a panel with breathability like ALC, a large vacuum pump using an external power source is indispensable, and a special sponge rubber one that conforms to the uneven surface of ALC is required as the adsorption pad, which inevitably becomes expensive. Furthermore, the lifting method using a wire as in Patent Document 1 has the problem that the panel swings and touches around, similar to the above-mentioned binding method.

[0010] The present invention solves the problems of such conventional technologies, can clamp even a heavy workpiece and transport and install it with a transport and erection device, aims to improve safety and reliability, has a function in which the clamping plate can correspond even when the minimum width of the workpiece is half of the maximum width, and provides a clamping device for a panel that does not require separate power and is low-cost.

Means for Solving the Problems

[0011] The clamping device for the panel of the present invention comprises an upper clamping plate and a lower clamping plate arranged vertically, a pantograph mechanism composed of four links rotatably connected by shafts to the edges of the upper clamping plate and the lower clamping plate, guide means for supporting the upper clamping plate and the lower clamping plate so as to be movable closer or farther away, and a threaded rod with a rotating means provided at the center of the pantograph mechanism, which is screwed into the connecting member of the link and moves the pantograph mechanism to open outward or close inward to move the upper clamping plate and the lower clamping plate closer or farther away, and clamp or release the panel with the two clamping plates, and a support frame for supporting the upper and lower clamping plates, the pantograph mechanism, the guide means, and the threaded rod.

[0012] The guide means preferably comprises a linear guide consisting of a guide rail fixed to the support frame and facing in the vertical direction and a linear guide block movably mounted on the guide rail, and the upper and lower clamping plates and the linear guide block are connected by guide columns.

[0013] The rotating means of the threaded rod is preferably a handle.

[0014] The rotating means of the threaded rod is an actuator, and it is preferable to rotate the threaded rod by the power of the actuator.

[0015] The threaded rod is preferably a trapezoidal thread.

[0016] A ratchet wheel is preferably attached to the threaded rod, and the reverse rotation of the threaded rod is prevented by a claw meshing with the ratchet wheel.

[0017] It is preferable to connect a remote operation mechanism to the handle of the threaded rod and the ratchet wheel so as to remotely operate the handle and the ratchet wheel.

[0018] It is preferable to provide an anti-slip and anti-scratch plate on the clamping surfaces of the upper and lower clamping plates.

[0019] It is preferable to provide clamping force display means for displaying the clamping force actually generated on the upper and lower clamping plates.

[0020] It is preferable to attach an arm of a conveying and installing device for automatically conveying the panel and installing it in a building to the support frame.

[0021] The conveying and installing device is preferably a giraffe (registered trademark).

Effect of the Invention

[0022] According to the present invention, even a heavy panel (workpiece) can be clamped and conveyed and installed by a conveying and installing device. Without manual labor, safety and reliability are improved. Also, even if the minimum width of the panel is half of the maximum width, the clamping plate can cope with it. One clamping device can handle various panels, and it can be a low-cost panel clamping device that does not require separate power.

Brief Description of the Drawings

[0023]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0024] Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the drawings. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0025] FIG. 1 is a perspective view of a panel clamping device according to an embodiment of the present invention, and FIG. 2 is a perspective view of the guide means. In the following description, the terms "upper and lower" or "left and right" indicate the directions in the state of the drawings, and do not indicate the directions in the actual use state.

[0026] In FIG. 1, the clamping device A is supported by a long support frame 1 extending in the horizontal direction. Hereinafter, the configuration of the clamping device A will be described.

[0027] The clamping device A includes a pair of upper clamping plates 6a and lower clamping plates 6b facing each other vertically. Guide columns 7b and 7c extending downward are fixed to the left and right ends of the front part of the upper clamping plate 6a, and guide columns 7a and 7d extending upward are fixed to the left and right ends of the front part of the lower clamping plate 6b. The guide columns 7a, 7b, 7c, and 7d are fixed to the linear guide blocks 3a, 3b, 3c, and 3d by bolts 10, respectively. An anti-slip and anti-scratch plate 8 made of a rubber material or the like is attached to the clamping surfaces of the upper and lower clamping plates 6a and 6b by bolts 9.

[0028] At the front of the upper and lower clamping plates 6a and 6b, a pantograph mechanism 13 consisting of four links 13a, 13b, 13c, and 13d is attached as follows. Two support shafts 15 are fixed to the front of the upper clamping plate 6a, and two support shafts 16 are also fixed to the front of the lower clamping plate 6b. The upper links 13a and 13b are rotatably attached to the upper support shaft 15, and the lower links 13c and 13d are rotatably attached to the lower support shaft 16. Connecting plates 19a and 19b with threaded holes 18 are connected by pins 20 at the connecting ends of the respective links 13a, 13b, 13c, and 13d, and threaded rods 24 are screwed into the respective threaded holes 18. The directions of the threads of the threaded rods 24 screwed into the connecting plate 19a and the connecting plate 19b are opposite, one being a right-hand thread and the other being a left-hand thread. Both ends of the threaded rod 24 are rotatably supported by brackets 21 fixed to the support frame 1. A handle 25 is attached to one end of the threaded rod 24, a ratchet 26 is attached to the other end, and an anti-backward rotation claw 27 meshes with the ratchet 26.

[0029] In FIG. 1, alignment plates 4 for alignment and alignment marks 5 are provided on the left and right of the support frame 1. In the middle of the support frame 1, a fixed flange 35 for attachment to a conveying and installing device 30 (see FIG. 4) is provided.

[0030] FIG. 2 is a perspective view seen from the Y direction of FIG. 1 and is a perspective view showing the guide means of the clamping device A. A guide plate 33 is fixed to the support frame 1 extending in the horizontal direction, and four parallel guide rails 2a, 2b, 2c, and 2d facing in the vertical direction are fixed to the guide plate 33. Linear guide blocks 3a, 3b, 3c, and 3d that move up and down along these are mounted on the guide rails 2a, 2b, 2c, and 2d. The guide rails 2a, 2b, 2c, and 2d and the linear guide blocks 3a, 3b, 3c, and 3d constitute a linear guide G. The guide posts 7a, 7b, 7c, and 7d are fixed to the linear guide blocks 3a, 3b, 3c, and 3d.

[0031] Next, the operation when clamping the workpiece W (in this example, a long ALC panel with a width of 300 to 600 mm) will be described (see Fig. 3). When the alignment pad 4 and the mark 5 are applied to the workpiece W to determine the clamping position and the handle 25 is rotated clockwise, the rotation of the screw rod 24 causes the connecting plates 19a and 19b and the links 13a, 13b, 13c, and 13d of the pantograph mechanism 13 to move in the direction of opening left and right. As a result, the upper and lower ends of the upper and lower links 13a, 13b, 13c, and 13d move in the direction of approaching each other, and the upper and lower clamping plates 6a and 6b move in the approaching direction. At this time, the guide columns 7a, 7b, 7c, and 7d also move along the guide rails 2a, 2b, 2c, and 2d by the linear guide blocks 3a, 3b, 3c, and 3d. Then, as shown in Fig. 3, the workpiece W is clamped from above and below (both sides of the workpiece) by the upper and lower clamping plates 6a and 6b. Note that the ratchet 26 also rotates, and the reverse rotation of the screw rod 24 is prevented by the reverse rotation prevention claw 27. It is also possible to apply a set torque with a torque wrench (not shown) after clamping and gripping the workpiece W. By using a trapezoidal screw for the screw rod 24, the workpiece W can be securely held by the self-locking function of the screw rod 24.

[0032] Fig. 4 shows the conveying operation of the workpiece by the conveying and installing device, and Fig. 5 shows the operation of installing (erecting) the workpiece. As shown in Fig. 5, the fixed flange 35 is arranged at the center of the support frame 1, and two clamping devices A are arranged on both sides thereof. Then, the workpiece W is clamped at two locations by the upper and lower clamping plates 6a and 6b as described above.

[0033] As shown in Fig. 4, the workpiece W is placed horizontally. The arm 31 that rotates up and down of the conveying and installing device 30 is set in a substantially horizontal state, and the mounting portion 32 at the tip of the arm 31 is fixed to the fixed flange 35 of the support frame 1. Then, as shown in Fig. 4, the workpiece W is conveyed while raising the arm 31 little by little from the horizontal state, and finally, as shown in Fig. 5, the workpiece W is held vertically and erected in the building in this state.

[0034] As the conveying and setting device, a giraffe (registered trademark) is preferable, but other industrial robots, arm-type manipulators such as balancers can also be used.

[0035] In the above embodiment, various modifications are possible. For example, the handle 25 of the screw rod 24 can be rotated by hand to move the clamp plates 6a and 6b for clamping, and the operations of the handle 25 and the ratchet 26 can also be remotely operated mechanically by connecting a remote operation mechanism such as a wire. Also, an actuator such as a motor can be used for the rotating means of the screw rod 24 to rotate the screw rod 24 by the power of the actuator. Further, after gripping the workpiece W, the screw rod 24 can be operated with a torque wrench to apply a set torque to the clamp plates 6a and 6b. Also, by using a trapezoidal screw for the screw rod 24, the set torque can be held by the self-locking function of the trapezoidal screw. Furthermore, it is also possible to provide a clamp force display means for displaying the actually generated clamp force, such as a surface pressure sensor, on the clamp plates 6a and 6b to display the clamp force.

[0036] As described above, the clamping device for the panel of the present embodiment can firmly clamp the workpiece for transportation and erection, so that the shaking of the workpiece is eliminated and the safety is improved. Furthermore, in combination with the guiding means, since the structure of the screw jack using the pantograph mechanism 13 is used for the clamping structure, the upper and lower clamping plates 6a and 6b perform parallel movement on the same plane during the clamping operation. By taking advantage of this, by making the guide columns 7a, 7b, 7c, and 7d into a so-called nested structure, the upper and lower clamping plates 6a and 6b will not protrude inward or outward, and interference between the clamping device A and the surroundings during erection can be avoided. In addition, the structure of the screw jack using the pantograph mechanism 13 can obtain a maximum clamping force with a minimum movement, that is, a clamping force of more than three times the weight of the workpiece. Also, since the guide columns 7a, 7b, 7c, and 7d are in a nested structure, the movable range of the clamping plates 6a and 6b is large. Therefore, even when the minimum width of the workpiece is half of the maximum width, the clamping plates 6a, 6b, 6c, and 6d can move within the required range and can firmly clamp the workpiece. In addition, the ratchet 26 can prevent the reverse rotation of the screw rod 24, improving the safety.

Explanation of Signs

[0037] 1 Support frame 2a, 2b, 2c, 2d Guide rails (linear guides) 3a, 3b, 3c, 3d Linear guide blocks (linear guides) 6a Upper clamping plate 6b Lower clamping plate 7a, 7b, 7c, 7d Guide columns 8 Anti-slip and anti-damage plate 13 Pantograph mechanism 13a, 13b, 13c, 13d Links 15, 16 Shafts 18 Screw hole 19a, 19b Connecting plates 24 Screw rod 25 Handle (rotating means) 26 Ratchet wheel 27 Reverse rotation prevention claw 30 Conveying and installation device A clamping device W panel (workpiece)

Claims

1. An upper clamp plate and a lower clamp plate arranged vertically, A pantograph mechanism composed of four links rotatably connected by shafts at the edges of the upper clamp plate and the lower clamp plate, Guide means for supporting the upper clamp plate and the lower clamp plate so as to be movable closer or farther away, A threaded rod with a rotating means provided at the center of the pantograph mechanism, screwed into the connecting member of the link, and moved so as to open the pantograph mechanism outward or close it inward to move the upper clamp plate and the lower clamp plate closer or farther away, and clamping or releasing the panel with the two clamp plates, A support frame for supporting the upper and lower clamp plates, the pantograph mechanism, the guide means, and the threaded rod, characterized in that it is a panel clamping device.

2. The guide means comprises a linear guide consisting of a guide rail fixed to the support frame and facing in the vertical direction and a linear guide block movably mounted on the guide rail, and the upper and lower clamp plates and the linear guide block are connected by guide columns. The panel clamping device according to claim 1, characterized in that.

3. The rotating means of the threaded rod is a handle. The panel clamping device according to claim 1 or 2, characterized in that.

4. The rotating means of the threaded rod is an actuator, and the threaded rod is rotated by the power of the actuator. The panel clamping device according to claim 1 or 2, characterized in that.

5. The threaded rod is a trapezoidal thread. The panel clamping device according to any one of claims 1 to 4, characterized in that.

6. A ratchet wheel is attached to the threaded rod, and the reverse rotation of the threaded rod is prevented by a claw meshing with the ratchet wheel. The panel clamping device according to any one of claims 1 to 5, characterized in that.

7. A remote operation mechanism is connected to the handle of the threaded rod and the ratchet wheel, and the operation of the handle and the ratchet wheel is performed remotely. The panel clamping device according to claim 6, which directly or indirectly quotes claim 3, characterized in that.

8. An anti-slip and anti-scratch plate is provided on the clamping surface of the upper and lower clamp plates. The panel clamping device according to claim 1 or 2, characterized in that.

9. The panel clamping device according to claim 1 or 2, characterized in that clamping force display means for displaying the clamping force actually generated on the upper and lower clamping plates is provided.

10. The panel clamping device according to claim 1 or 2, characterized in that an arm of a conveyance / installation device for automatically conveying the panel and installing it in a building is attached to the support frame.

11. The panel clamping device according to claim 10, characterized in that the conveyance / installation device is a giraffe (registered trademark).

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