JPH0614136U - Transporting and positioning equipment for heavy goods - Google Patents

Abstract

(57) [Abstract] [Purpose] A heavy object transport / positioning device that achieves high positioning accuracy without having to increase the accuracy of stopping heavy objects by a carrier, has a simple structure, and is relatively inexpensive. I will provide a. [Structure] A movable table 5 is movably arranged on a heavy object installation table 4 at right angles to the transfer direction of the transfer vehicle 3, and an upper end and at least one end into which the transfer table 5 can be inserted are opened in the transfer vehicle 3. A recess 33 is formed. In addition, guide bearings 37 and 43 are arranged on the carrier vehicle 3 and the installation table 4 at intervals corresponding to the width of the plate 7 for placing heavy objects. The mounting plate 7 can be mounted on the carriage 3 and the moving table 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a carrying / positioning device for carrying a heavy object such as a mold and stopping it, and then positioning it at a predetermined position in a direction perpendicular to the carrying direction.

[0002]

[Prior art]

 For example, in the belt manufacturing process, a mold as a heavy object is conveyed from a certain position, positioned at a predetermined position, and then prepared for the next process. By ensuring the positioning, a smooth transition to the work of the next process becomes possible. Therefore, the following methods have heretofore been implemented in the transportation of heavy goods that require such positioning.

(1) A method of achieving the required accuracy by increasing the positioning or stopping accuracy of the transportation device itself as compared with the required positioning accuracy of heavy objects.

(2) After stopping the heavy object near a pre-positioned position, slightly move the heavy object using a position corrector such as a cotter, and correct the stop position to obtain the required accuracy. How to achieve.

[0005]

[Problems to be solved by the device]

 However, the conventional transfer / positioning methods (1) and (2) described above have the following problems.

First, in the method described in (1) above, the heavier the weight of the heavy object, the greater the inertial force at the time of transportation, so that the control mechanism for accurately stopping at a predetermined position (for example, step A mechanism for lowering the stop speed is required, and the structure of the control device becomes complicated, which makes the device expensive.

In addition, in the method described in (2) above, the heavier the weight of the heavy object, the more force is required to move the heavy object with a cotter or the like, and the labor burden on the operator increases. In addition, the eccentric load that acts on the cotter and the like when it is moved increases, and the cotter and the like wears in a short period of time. Moreover, there is a risk that the cotter or the like will damage the heavy object.

The present invention has been made in view of the above-mentioned points, and it is possible to obtain high positioning accuracy without particularly increasing the accuracy of stopping a heavy object by a carrier, which has a simple structure and is relatively inexpensive. It is an object of the present invention to provide a device for transporting and positioning heavy objects.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the heavy object transporting / positioning device of the present invention comprises: a) a mounting member for mounting a heavy object at a fixed position; A movable member that is arranged so as to be capable of advancing and retreating orthogonally to the transport direction of the carriage and capable of vertically supporting the placing member; b) the transport carriage that has an upper end and at least one end into which the moving member can be inserted And the mounting member engages with the mounting member when the mounting member is mounted at a fixed position on the transport carriage and the mounting member floats above the transport carriage. C) a guide member for guiding the placing member along the moving direction of the moving member, and a positioning member for abutting the placing member member to restrict the movement. It is provided.

Further, as described in claim 2, a lower end of the moving member is opened, a roller group is arranged so as to be able to project downward from the opening, and expansion and contraction is provided between the roller group and an upper surface of the moving member. You may make it possible to raise and lower the mounting member by interposing a possible airbag.

[0011]

[Action]

 According to the heavy load transporting / positioning apparatus of the present invention having the above-described configuration, first, the heavy load is placed at a fixed position on the placement member placed on the transport carriage. In this state, the transport carriage advances and stops in front of the moving member waiting at the final positioning position of the heavy load, and transports the heavy load. At this time, the position where the heavy object is stopped is not the final positioning position, so some error is allowed. Subsequently, the moving member advances toward the transport carriage and is inserted into the recess of the transport carriage. Then, the moving member lifts the mounting member mounted on the transport carriage, so that the engagement state between the mounting member and the engaging member of the transport carriage is released, and the moving member is removed from the transport carriage. The placement member can be moved. In this state, the moving member retracts, and the placing member and the heavy object supported on the moving member move toward the positioning position of the heavy object. At this time, the mounting member is guided by the guide member to move while the positioning error is corrected, and contacts the positioning member to position the heavy object. Here, the heavy object is positioned at a predetermined position by lowering the placing member lifted by the moving member. As described above, in the device of the present invention, even if there is a small error in the stop position of the heavy object due to the transport carriage, the error is corrected when the heavy object is moved by the moving member, so that the stop by the transport carriage is stopped. The positioning accuracy of the position may be rough.

According to the second aspect of the present invention, after the moving member is inserted into the recess of the carrier truck, pressurized air is injected into the air bag to inflate it so that the roller group projects relatively downward. The loading member (heavy weight) rises, and conversely, by discharging the pressurized air from the airbag, the group of rollers protruding downward relatively retracts and lowers the loading member, so the operation is easy. Also, it is structurally compact.

[0013]

【Example】

 An embodiment of a heavy object transporting / positioning device of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view in which a part of the heavy object transporting / positioning device according to the embodiment is omitted, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a line III-III line in FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG.

As shown in FIG. 1, a heavy load carrying / positioning device 1 travels on a pair of parallel rails 2 extending in a carrying direction of a heavy load C (denoted by symbol A in the drawing). The carrier 3 and the heavy object installation table 4 installed in the direction orthogonal to the rail 2 (indicated by symbol B in the drawing), the predetermined position on the heavy object installation table 4 and the transport vehicle 3 And a movable table 5 as a movable member that can move back and forth between the two. The heavy object installation table 4 and the movable table 5 are provided at a plurality of positions along the rail 2 at regular intervals.

As shown in FIG. 2, the transport carriage 3 is provided with four wheels 31 rolling on the rail 2 at a lower portion, and a pair of bearings 21 is provided at both ends in the transport direction at an intermediate position between the pair of rails 2. Both ends of a toothed belt (also referred to as a syncrobelt) 23 wound around a toothed pulley 22 rotatably supported are fixed to the front and rear of the carriage 3. One (front) toothed pulley (not shown) is a drive pulley, to which a drive motor (not shown) is connected, and the rotation of this motor causes the carriage 3 to travel via the toothed belt 23. As shown in FIG. 2, a toothed belt holder 32 is hung downward from the lower end of the center of the carriage 3, and the lower toothed belt 23 is held by a roller 32 a at the lower end of the holder 32. .

A recess 33 having an upper end and both ends opened in a direction (direction B) orthogonal to the rail 2 is formed on the upper portion of the transport carriage 3. Then, both sides of the recess 33 are formed as a support portion 34 on which the mounting plate 7 for the heavy object C can be mounted. Engagement pieces 35 that engage with the mounting plate 7 mounted on the support portions 34 are fixed to both ends of each support portion 34. As shown in FIG. 2, the height of the engagement piece 35 is set so that the lower portion of the mounting plate 7 slightly engages, and the engagement state is canceled when the mounting plate 7 slightly lifts. Has become. Further, a large number of guide bearings 37 are mounted on the outside of each of the support portions 34 so as to be horizontally rotatable along the longitudinal direction of the support portion 34 via L-shaped support fittings 36. The guide bearing 37 is attached to the side surface of the mounting plate 7.

On each of the heavy object installation bases 4, a pair of heights are formed at the same intervals as the intervals of the support parts 34 on both sides of the transport vehicle 3 and at the same or substantially the same as the upper surface of the support parts 34. The support portion 41 is fixed in the direction orthogonal to the rail 2. Further, a large number of guide bearings 43 are mounted on the outside of each of the support portions 41 so as to be horizontally rotatable along the longitudinal direction of the support portion 41 via L-shaped support fittings 42, and guide bearings thereof are provided. 43 is attached to the side surface of the mounting plate 7. Further, a stopper piece 44 for positioning is fixed to the rear end of each support portion 41.

The movable table 5 can be inserted into the recess 33 of the carrier vehicle 3, has a width slightly narrower than the interval between the support portions 34, and is slightly lower in height than the support portions 34. The movable table 5 is open at its lower end, and is provided with a roller group 51 composed of a large number of rotatable rollers 51a as shown in FIG. An inflatable and defensible airbag 52 is provided between the upper surface of the movable table 5 and the roller group 51 as shown in FIG. Further, the airbag 52 is connected to a pressurized air source (not shown) via a control valve (not shown), and by switching the control valve, pressurized air is injected and the airbag 52 is inflated to control. Pressurized air in the airbag 52 is discharged by switching the valve to another position.

An air cylinder 6 is attached to the rear end of the heavy object installation base 4 via a mounting member 62 as shown in FIG. 3, and the rear end of the moving base 5 is attached to the tip of the piston rod 61 of the air cylinder 6. Are connected. A pressurized air source is connected to the air cylinder 6, and the movable table 5 is moved forward by expanding the piston rod 61 of the air cylinder 6, and conversely, the movable table 5 is contracted by contracting the piston rod 61. Will retreat.

Next, the operation of the heavy object transporting / positioning apparatus 1 of the embodiment having the above-described configuration will be described.

In FIG. 1, first, the heavy object C is placed by a crane or the like at a fixed position on the placing plate 7 mounted on the carrier 5. In this state, the drive motor (not shown) rotates and the toothed belt 23 rotates clockwise, so that the transport carriage 3 travels on the rail 2. Then, when the transport vehicle 3 travels to the front of the installation platform 4 that transports and positions the heavy load C, it is detected by a limit switch (not shown) and stopped. At this time, the stop position of the carriage 3 may be slightly displaced due to the influence of inertial force or the like.

The movable table 5 standing by on the heavy object installation table 4 advances due to the extension of the piston rod 61 of the air cylinder 6 and is inserted into the recess 33 below the mounting plate 7 of the carrier vehicle 3. . At this time, the airbag 52 inside the movable table 5 is in a contracted state.

By injecting pressurized air into the airbag 52 of the moving table 5 to inflate it, the roller group 51 projects relatively downward, and the mounting plate 7 is slightly lifted together with the heavy object C. As a result, the engagement state between the mounting plate 7 and the engagement piece 35 of the transport carriage 3 is released, and the mounting plate 7 can be moved on the transport carriage 3.

The movable table 5 retracts due to the contraction of the piston rod 61 of the air cylinder 6, and the mounting plate 7 and the heavy object C supported thereon move to the final position of the heavy object C on the installation table 4. Move towards. That is, as the movable table 5 moves backward, the mounting plate 7 moves while being guided by the guide bearings 37 on both sides of the transport vehicle 3, and then the rear end of the mounting plate 7 moves onto the mounting table 4. Then, both side surfaces of the mounting plate 7 abut on the guide bearings 43 on both sides of the installation table 4 and are guided.

Therefore, at this time, assuming that the stop position of the transport carriage 3 is slightly displaced from the preset position, the rear end of the mounting plate 7 is moved onto the installation table 4 and then on the installation table 4. When both side surfaces of the mounting plate 7 come into contact with the guide bearings 43 on both sides, the carriage 3 slightly moves along the rail 2 and the stop position thereof is corrected to the regular set position. Since the transport carriage 3 is connected to the belt 23, the transport carriage 3 is allowed to move due to the slack of the belt 23 and the extension of the belt 23 itself. In this way, the transport vehicle 3 is stopped at the normal position despite the rough stop control by only the limit switch. Then, the mounting plate 7 and the heavy object C which have been transferred onto the installation table 4 move while the both side surfaces of the mounting plate 7 are guided by the guide bearings 43 on both sides of the installation table 4, and the stoppers for positioning. The rear end of the mounting plate 7 contacts the piece 44, and the retreat of the movable table 5 is restricted.

When the pressurized air in the airbag 52 is discharged, the movable table 5 is lowered with respect to the roller group 51 protruding downward from the lower end of the movable table 5 and lifted by the movable table 5. The placing plate 7 is placed on the support portions 41 on both sides of the installation table 4, and the heavy object C 1 is positioned at a predetermined position on the installation table 4.

It should be noted that the installation bases 4 are provided at a plurality of places, and after the weight C placed on the mounting plate 7 is transferred onto one installation base 4, the motor is reversed. By rotating the belt 23 in the counterclockwise direction, the carrier 3 is returned to its original position, another mounting plate 7 is mounted on the carrier 3, and another heavy object C is mounted. By placing the heavy object C at a fixed position on the plate 7 and repeating the above-mentioned operations, the heavy object C can be conveyed and positioned at a predetermined position on the vacant installation table 4. Therefore, the work of the next step can be sequentially performed on the heavy load C positioned at a predetermined position on the plurality of installation bases 4 in parallel with the heavy load transfer work, which significantly improves the productivity. Sent.

By the way, in the above-described embodiment, the mounting plate 7 and the heavy object C are lifted and lowered by using the airbag 52 mounted in the moving table 5, but instead of the airbag 52, for example, a plurality of It is possible to arrange a small vertical cylinder of (1) in the movable table 5 to move the mounting plate 7 up and down. The mounting plate 7 can be moved up and down by attaching the movable table 5 to the tip of the arm-shaped elastic member and moving the movable table 5 up and down by another elevating mechanism via the elastic member. The transport carriage 3 can be driven by a chain drive instead of the belt drive, or a drive motor is directly mounted on the transport carriage 3 to drive the transport carriage without using a belt or chain transmission mechanism. Even if it does so, it can be implemented in the same manner.

[0030]

[Effect of device]

 As is clear from the above description, the heavy object transporting / positioning device of the present invention has the following effects. (1) Since a heavy load is transported by the transport carriage and stopped, and then the shift of the stop position can be corrected by the guide member when moving to a predetermined position in the orthogonal direction, the heavy load by the transport carriage can be corrected. Since an error in the stop position is allowed, high-accuracy positioning can be performed using a simple stop device such as a limit switch. For this reason, the positioning accuracy of the stop position of the heavy goods transportation vehicle may be rough, and the structure of the transportation facility can be simplified to reduce the facility cost.

(2) In the device according to the second aspect, the mechanism for lifting and lowering the heavy object is simple and compact.

[Brief description of drawings]

FIG. 1 is a plan view in which a part of a heavy object transporting / positioning device according to an embodiment of the present invention is omitted.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a view taken along the line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

[Explanation of symbols]

 1 Transport / Positioning Device 2 Rail 3 Transport Carriage 4 Heavy Object Installation Platform 5 Mobile Platform 6 Air Cylinder 7 Mounting Plate 23 Toothed Belt 33 Recess 37/43 Guide Bearing 44 Positioning Stopper Piece 52 Airbag C Heavy Object

Claims (2)

[Scope of utility model registration request] 1. A mounting member for mounting a heavy object at a fixed position,
A transport carriage that can mount the mounting member, and a moving member that is arranged so as to be capable of advancing and retracting orthogonally to the transport direction of the transport carriage and capable of lifting and lowering the mounting member are provided. While forming the upper end into which the moving member can be inserted and the recess opening at least one end,
An engaging member is provided which engages with the placing member when the placing member is placed at a fixed position on the transport carriage and releases the engagement when the placing member floats from the transport carriage, A heavy object transporting / positioning device, characterized in that a guide member that guides the placing member is provided along a moving direction of the member, and a positioning member that comes into contact with the placing member to regulate movement is provided. . 2. A lower end of the moving member is opened, a roller group is arranged so as to be able to project downward from the opening, and an inflatable and deflatable airbag is provided between the roller group and the upper surface of the moving member. The heavy object transporting / positioning device according to claim 1, wherein the placing member is moved up and down.