JPH09110387A - Movable body driving device used with screw shaft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable it to prevent a tapped driving member from falling down to the floor together with a movable body without restricting a travel stroke of the movable body even if this tapped driving member, being attached to the movable body and driving this movable body by means of a screw shaft, is worn out. SOLUTION: A nut 40A with a catching flange 40a for catching a tapped driving member 32 to a screw shaft 30 at a lower part of the tapped driving member 32 to be screwed in the screw shaft 30 to make a lifting arm 20 or a movable body, is going up and down together via a connecting pin 42A. If the tapped driving member 32 is about to fall off together with the movable body, this nut 40A receives the driving member 32, so that the driving member 32 will in no case fall down to the floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for driving a moving body which moves up and down by rotation of a screw shaft such as mounting a winding drum of a portal type winding machine. It can be used not only in the field but also in various fields where it is required to move the moving body up and down by the rotation of the screw shaft. For example, as another application example, there is a VAD device for manufacturing an optical fiber preform, a raising / lowering drive device such as a preform holder used for holding and raising the preform by a vitrification device and the like.

[0002]

2. Description of the Related Art For example, as shown in FIG. 9, a portal type winder is a pair of (ascending and descending while being guided by a guide roller 18 to a guide cylinder 16 suspended from an upper frame portion 14 of a portal frame 12). In the drawing, only one of the pair is shown), and lifting and lowering arms (moving bodies) 20 are provided, and these lifting and lowering arms 20 are rotatably attached to the tips thereof and a spindle 24 for supporting a winding drum 22 is provided. Have. The spindle 24 attached to the one elevating arm 20 shown in FIG. 9 is a driven-side spindle that is engaged with one end of the spindle support hole 22 a of the winding drum 22, and is attached to the elevating arm 20. The spindle attached to the other lifting arm that is not shown is a drive-side spindle that is engaged with the other end of the spindle support hole 22a of the winding drum 22.

As shown in FIG. 9, the upper frame portion 14
A drive member 32 with a female screw that is screwed into a screw shaft 30 that is rotationally driven from a drive motor 26 mounted on the upper frame portion 14 is attached to each lifting arm 20 and In the example,
The elevating arm 20 is a hollow arm portion 20 having a rectangular cross section.
The drive member 32 having an internal thread A is fitted and fixed to the hollow arm portion 20A (see FIG. 2). The elevating arm 20 is supported by the guide roller 18 so that it can slide along the axis of the screw shaft 30, but cannot rotate in the guide cylinder 16. Therefore, the threaded drive member 32 is supported so as not to rotate in the guide tube 16 together with the elevating arm 20 that is a moving body. When the drive motor 26 rotates and the screw shaft 30 rotates in one direction via the gear box 28, the female threaded drive member 32 descends together with the elevating arm 20, and the spindle 24 at the tip of the elevating arm 20 is conveyed by the conveyor 21. The winding drum 22 that has been used
Of the spindle support hole 22a. The drive side spindle attached to the other lifting arm side can move forward and backward with respect to the winding drum 22 together with its drive system. Therefore, 1
When the spindle 24 on the pair of elevating arms 20 is pushed toward the take-up drum 22 at a predetermined lowered position facing the spindle support hole 22a of the take-up drum 22, the take-up drum 22 becomes a pair. Lifting arm 20
Is supported by the spindle 24.

After that, when the drive motor 26 is rotated in the reverse direction, the screw shaft 30 is rotated in the reverse direction via the gear box 28. Therefore, the elevating arm 20 supports the winding drum 22 on the spindle 24 at the tip thereof. As it is, the winding drum 22 is lifted from the conveyor 21.
In this way, the winding drum 22 is maintained in a state in which it can be wound, so that a filament such as a wire rod or a web can be wound.

In this type of moving body (elevating arm) driving device, the screw shaft 30 is usually made of a material having a hardness higher than that of the female-threaded driving member 32.
The hardness of the screw shaft 30 used for raising and lowering the raising and lowering arm 20 for the gate type winder has a great influence on the wear resistance of the drive member 32 with a female screw, and when the hardness of the screw shaft 30 becomes Hv250 or less, the female screw The attached drive member 32 is significantly worn. The drive member 32 with an internal thread is Hv120.
A copper alloy having a hardness of about 145, for example, a brass alloy,
Made from bronze-based or phosphor bronze-based alloys.

As described above, the screw shaft 30 and the driving member 32 with an internal thread are made of materials in a generally defined combination, and this moving body driving device has a corrosive atmosphere such as chlorine gas or a high temperature and high humidity atmosphere. When the screw shaft 30 and the drive member 32 with an internal thread are used in such an atmosphere as described above, the screw of the drive member 32 with an internal thread having a particularly low hardness may be excessively worn. this is,
For example, this occurs when the lubricant applied between the screw shaft 30 and the female threaded drive member 32 is corrosive, deteriorates in a high temperature and high humidity atmosphere, or overlooks the supply of lubricant.

When the screw of the drive member 32 with an internal thread is worn, the drive member 32 with an internal thread falls on the floor F together with the moving body. Therefore, a damper is arranged on the floor F in accordance with the falling position of the moving body. , It is required to prohibit access to this expected fall position. However, if a worker inserts a part of his body between the moving body and the damper, he may be impacted by the falling moving body, and if necessary, the worker should move in and out of the expected drop position. However, it was difficult to completely prohibit access to this position.

It is conceivable to install a damper in the middle of the screw shaft 30 in order to prevent the screw of the female screw drive member 32 from being worn and dropping the female screw drive member 32 along the screw shaft 30. However, if such a damper is installed, the stopper may obstruct the movement of the moving body when the moving body moves up and down for a long time. Installing the damper has the same drawbacks as installing the damper on the floor.

[0009]

SUMMARY OF THE INVENTION One of the problems to be solved by the present invention is that even if the screw of a female-threaded driving member is worn, the driving member does not drop to the floor, so that the operator can operate as necessary. Another object of the present invention is to provide a moving body drive device using a screw shaft that can enter below the moving body.

Another problem to be solved by the present invention is to prevent the driving member from falling to the floor even if the screw of the female threaded driving member is worn, without restricting the moving stroke of the moving body. To provide a moving body drive device using the screw shaft.

[0011]

A first object of the present invention is to provide a moving body, to which a drive member with a female screw, which is screwed in a non-rotatable state, is attached to a moving body, by rotating the screw shaft to move the center of the screw shaft. In a moving body drive device using a screw shaft that moves along an axis, a receiving member that is screwed to the screw shaft, and a connecting member that directly or indirectly connects the female threaded drive member and the receiving member And the receiving member does not normally receive the gravity of the female-threaded driving member and moves along with the female-threaded driving member along the screw shaft by the rotation of the screw shaft, but the female-threaded driving member and the screw shaft are It is connected to the female threaded drive member by a connecting member so as to receive the female threaded drive member when the screw is released. To provide a movable body drive apparatus using a screw shaft, characterized in.

A second object solving means of the present invention is a moving body driving device using a screw shaft according to the first object solving means, wherein the receiving member is screwed onto the screw shaft below the female threaded driving member. The connecting member has one end fixed to the female-threaded driving member and the other end engaged with the female-threaded driving member so that the receiving member moves together with the female-threaded driving member. To provide a device.

A third object solving means of the present invention is a moving body driving device using a screw shaft according to the second object solving means, wherein the connecting member penetrates with a play in a through hole of the receiving member. It is an object of the present invention to provide a moving body drive device using a screw shaft, which is characterized in that it is composed of a connecting pin.

A fourth object solving means of the present invention is a moving body driving device using a screw shaft according to the first object solving means, wherein the connecting member is fixed between the female threaded driving member and the receiving member. It is an object of the present invention to provide a moving body drive device using a screw shaft, which is characterized in that it has a flexible structure that is partially connected and twisted partially.

A fifth object solving means of the present invention is a moving body driving device using a screw shaft according to the first object solving means, wherein the receiving member is screwed onto the screw shaft above the female threaded driving member. The connecting member has a suspension unit that suspends the female-threaded driving member when the female-threaded driving member is unscrewed from the screw shaft. To provide.

As described above, when the screw of the female threaded drive member wears and the female threaded drive member tries to drop together with the moving body, the receiving member screwed to the screw shaft receives the female threaded drive member. Since the driving member does not fall to the floor and the worker can enter below the moving body as necessary, the required work can be safely performed.

Since the receiving member moves along the screw shaft together with the internally threaded driving member due to the rotation of the screw shaft, the receiving member can be arranged close to the internally threaded driving member, and therefore the internally threaded driving member is worn. Then, the impact when received by the receiving member is small, the receiving member does not require particularly high rigidity, and the receiving member is not destroyed by this impact.

When the receiving member moves along the screw shaft together with the screw shaft, the female threaded drive member is not restricted in its moving stroke by the receiving member, and therefore, can drive a moving body having a long moving stroke. Can be applied.

The connecting member for connecting the receiving member and the driving member with the female screw is fixed to the driving member with the female screw at one end and engaged with the receiving member at the other end with play, or both ends thereof are provided with the female screw. Although it is fixed to the driving member and the receiving member, if a flexible structure that allows twisting is partially provided, the screw shaft and the driving member, or the screw threads of the screw shaft and the receiving member may not match accurately or Even if there is an abnormality in meshing due to a difference in lash, this abnormality is absorbed by the play and the flexible structure, so high screw precision is not required for the female-threaded drive member and the receiving member, and the device can be easily assembled. is there.

In particular, the receiving member is screwed onto the screw shaft above the female screw drive member, and the connecting member suspends the female screw drive member when the female screw drive member is disengaged from the screw shaft. With the hanging portion, when the female threaded drive member is worn and is received by the receiving member, the displacement of the female threaded drive member is small or almost nonexistent, so that the receiving impact of the receiving member is further reduced.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a moving body drive device 10 using a screw shaft according to the present invention, and a moving body drive device using this screw shaft. The body driving device 10 is shown to be applied to a pair of lifting arms (moving bodies) 20 for lifting the spindle of the portal winder 100, as in the case shown in FIG. 9.

As shown in FIG. 1, a pair of lifting arms 20.
(Only one lifting arm is shown in FIG. 1)
The guide cylinder 16 is suspended in the upper frame portion 14 of the gate-shaped frame 12 and is arranged in the guide cylinder 16 so as to move up and down while being guided by the guide rollers 18.
4 is rotatably attached to the tip of an arm portion protruding from the guide cylinder 16. The upper arm portion extending inside the guide tube 16 of the elevating arm 20 is a hollow arm portion 20.
The lower arm portion, which is A and is shown projecting from the guide tube 16 of the elevating arm 20, is the solid arm portion 20B.
A and 20B are flange-joined to each other, and the spindle 24
Are supported by the solid arm portion 20B. The guide roller 18 is, as shown in FIGS.
It is supported by a roller receiver 34 attached to the outer surface of the upper end of 0.

As shown in FIG. 9, one elevating arm 20 has a driven-side spindle 24 which is engaged with one end of the spindle support hole 22a of the winding drum 22.
The other lifting arm (not shown) facing the lifting arm 20 has a drive side spindle (not shown) that is engaged with the other end of the spindle support hole 22a of the winding drum 22.

As shown in FIG. 1, each lifting arm 20 is
A drive member 32 with an internal thread is provided at its upper end, and the drive member 32 with an internal thread is rotationally driven by a drive motor 26 mounted on the upper frame portion 14 via a gear box 28 also mounted on the upper frame portion 14. It is screwed onto the screw shaft 30.

As shown in FIG. 2, the guide tube 16 has a rectangular cross section, and the hollow arm portion 2 of the elevating arm 20.
0A has a quadrangular cross section, and the hollow arm portion 20A of the elevating arm 20 has opposite walls having a quadrangular cross section so that the hollow arm portion 20A does not rotate in the guide tube 16. Is slidably engaged with. The drive member 32 with a female screw is used for the hollow arm portion 20 of the lifting arm 20.
A has an outer surface corresponding to the inner surface of A, and these surfaces are engaged with each other and are fixed to the hollow arm portion 20A by screws 33 (see FIG. 3). In this manner, the female threaded drive member 32 is fixed to the screw shaft 30 while being non-rotatably guided by the guide cylinder 16 through the hollow arm portion 20A and the guide roller 18 and slidably guided along the axis of the screw shaft 30. It is supported. Therefore, when the drive motor 26 rotates and the screw shaft 30 rotates via the gear box 28, the female threaded drive member 32 moves up and down together with the elevating arm 20.

As shown in FIG. 3, the moving body driving apparatus 10 using the screw shaft of the present invention includes a nut-shaped receiving member 40 screwed to the screw shaft 30, a driving member 32 with an internal thread, and a receiving member 40. And a connecting member 42 for directly or indirectly connecting. Receiving member 40
Normally moves along the axis of the screw shaft 30 together with the female threaded drive member 32 by the rotation of the screw shaft 30 without receiving the gravity of the female threaded drive member 32. The drive member 32 with an internal thread is connected to the drive member 32 with an internal thread so as to receive the drive member 32 with an internal thread when the screwed drive member 32 and the screw shaft 30 are disengaged from each other. Some specific configurations of this connecting member 42 are shown in FIGS. 3, 6 and 7.

In the embodiment of FIG. 3, the receiving member 40 comprises a nut 40A with a collar 40a screwed onto the screw shaft 30 below the female-threaded driving member 32 (see FIGS. 3 and 5), and a connecting member 42. Consists of a connecting pin 42A whose one end is fixed by screwing it onto a nut 41 fixed to the lower surface of the female threaded drive member 32 (see FIG. 4). The lower end of this connecting pin 42A is attached to the collar 40a of the nut 40A. The through-hole 44 provided has a play and penetrates.

Next, the operation of the portal winder 100 equipped with the moving body drive unit 10 of the present invention will be described. As described in the prior art with reference to FIG. When the screw shaft 30 rotates and rotates in one direction via the gear box 28, the female threaded drive member 32 descends together with the elevating arm 20, and the spindle 24 at the tip of the elevating arm 20 is conveyed by the conveyor 21. The winding drum 22 is lowered to a position facing the spindle support hole 22a. As described in connection with FIG. 9,
The drive-side spindle attached to the other lifting arm side (not shown) is provided with the drive system and the winding drum 22.
You can move forward and backward.

Therefore, the spindle 24 on the pair of lifting arms 20 is connected to the spindle support hole 22a of the winding drum 22.
When the drive-side spindle is pushed toward the winding drum 22 at a predetermined lower position facing the winding drum 22,
Are supported by the spindle 24 of the pair of lifting arms 20.

Thereafter, when the drive motor 26 is rotated in the reverse direction, the screw shaft 30 is rotated in the reverse direction via the gear box 28, so that the elevating arm 20 supports the winding drum 22 on the spindle 24 at the tip thereof. As it is, the winding drum 22 is lifted from the conveyor 21.
In this way, the winding drum 22 is maintained in a state in which it can be wound, so that a filament such as a wire rod or a web can be wound.

As already mentioned, the drive member 3 with the internal thread
The gravity of the raising / lowering arm 20 and the spindle 24 is applied to 2 and after the take-up drum 22 is supported by the spindle 24, the gravity of the take-up bobbin 22 is further applied. It may wear out. If the screw of the female threaded drive member 32 is worn out of engagement with the screw shaft 30, the female threaded drive member 32 tries to drop together with the elevating arm 20 which is a moving body. However, since the receiving member 40 is located immediately below the female-threaded drive member 32, the female-threaded drive member 32 is not received by the receiving member 40 without a large impact and does not fall to the floor F. Therefore, the operator can safely perform the required work below the elevating arm 20 that is a moving body, if necessary.

On the other hand, as shown in FIG. 3, the receiving member 4
The nut 40A, which is 0, is fixed to the female threaded drive member 32 and is prevented from rotating by the connecting pin 42A that penetrates the through hole 44 of the collar 40a of the nut 40A with play, so that the screw shaft 30 rotates. When the female-screw drive member 32 is moved up and down together with the elevating arm 20 that is a moving body, the nut 40A that is the receiving member 40 is also moved up and down as the female-thread drive member 32 is moved up and down. That is, when the screw shaft 30 rotates in one direction and the internal threaded drive member 32 descends, the connecting pin 4 is attached to the internal threaded drive member 32.
The nut 40A, which is the receiving member 40 that is rotation-stopped via 2A, also descends together with the female-threaded drive member 32, and when the screw shaft 30 rotates in the other direction and the female-threaded drive member 32 rises, the connecting pin similarly. The nut 40A, which is prevented from rotating via 42A, also rises together with the female threaded drive member 32. Therefore, the distance between the female-threaded driving member 32 and the receiving member 40 remains constant.

In this way, if the distance between the female-threaded driving member 32 and the receiving member 40 is always kept constant,
Even if the screw of the female threaded drive member 32 is worn and the female threaded drive member 32 is disengaged from the screw shaft 30,
The drive member 32 with an internal thread is received by the collar 40a of the nut 40A, which is a receiving member 40, which is always arranged at a small constant distance from the drive member 32 with an internal thread, without causing a large impact.

It should be noted that the connecting pin 42A fixed to the female threaded drive member 32 has a through hole 44 in the collar 40a of the nut 40A which is the receiving member 40.
Since it penetrates with play, the engagement between the screw shaft 30 and the female threaded drive member 32 and the screw shaft 3
The meshing between the screw shaft 30 and the female threaded drive member 32 or the catching member 40, such as when the meshing of 0 and the catching member 40 does not match or the backlash of these meshing parts is different. Even if the precision is low, this is absorbed by the play between the connecting pin 42A and the through hole 44, so that their mutual engagement does not interfere with each other. In addition, this play is, for example, that the diameter of the through hole 44 is smaller than the diameter of the connecting pin 42A by 5 mm.
It can be obtained by increasing the size by about mm.

In the embodiment shown in FIGS. 1 to 5, the connecting pin 42A is used.
Penetrates through a through hole 44 provided in the collar 40a of the nut 40A serving as the receiving member 40. As shown in FIG. 6, the through hole 44 has a notch formed in the collar 40a of the nut 40A. 46 may be engaged with play. Also in this configuration, when the female-threaded drive member 32 is moved up and down by the rotation of the screw shaft 30, the nut 40A serving as the receiving member 40 is connected via the connecting pin 42A accordingly.
Is stopped and moves up and down together with the female-threaded drive member 32. Thus, the connecting member 42 has one end fixed to the female threaded drive member 32 and the other end so that the receiving member 40 moves together with the female threaded drive member 32.
It turns out that it only has to be related to 0.

Another different form of the invention is shown in FIG. 7, in which the connecting member 42 is fixedly connected between the internally threaded drive member 32 and the receiving member 40, part of which is shown. It has a flexible structure that allows partial twisting. In the example of FIG. 7, the flexible structure of the connecting member 42 is composed of a coil-shaped body 42B whose turn portions are in close contact with each other, and the attachment rod portions 42b and 42b ′ at both ends of the coil-shaped body 42B.
Are fixed to the female threaded drive member 32 and the receiving member 40 by appropriate fasteners 43, 43 ', respectively, to connect these members 32, 40.

In the embodiment shown in FIG. 7, the drive member 32 with a female screw is used.
If the drive member 32 tries to drop together with a moving body (not shown) due to wear of the screw, the female threaded drive member 32 is received on the receiving member 40 while crushing the coiled body 42B which is the flexible structure of the connecting member 42. To be

FIG. 8 shows a form in which the moving body drive device 10 of the present invention is applied to another moving body. In the configuration of FIG. 8, the movable body is a movable frame 1 on which an appropriate device is mounted.
20 and is shown in the drawing to have a female threaded drive member 32 mounted to the movable frame 120 for threadingly engaging a screw shaft 30 extending through one end of the movable frame 120. But the movable frame 12
Similarly, the other end portion of 0 has a female threaded driving member attached to the movable frame 120 so as to be screwed to another screw shaft 30. The female-threaded drive member 32 is fixed to the movable frame 120 by screws 33. Therefore, the movable frame 120 and the drive member 32 with an internal thread
Are held in a non-rotatable state by two screw shafts 30 penetrating both ends thereof.

In the moving body driving device 10 of the embodiment shown in FIG. 8, the receiving member 40 is composed of a nut 40A with a collar 40a screwed onto the screw shaft 30 above the female-threaded driving member 32, and the connecting member 42 is , A connecting screw 42C with a head 42c penetrating through a through hole 44 provided in the collar 40a of the nut 40A with play. The head 42c of the connecting screw 42C is located above the collar 40a and The screw portion of the connecting screw 42C is screwed into the movable frame 120 that is a moving body. In FIG. 8, reference numeral 48 is a retaining nut screwed with the connecting screw 42C and abutting against the movable frame 120 in order to prevent the connecting screw 42C from slipping out. The screw shaft 30 is
It is reversibly rotatably driven from an appropriate motor (not shown) via a speed reducer (not shown). In this embodiment, the nut 40A that is the receiving member 40 indirectly drives the female-threaded drive member 32 via the movable frame 120 that is a moving body.
It is connected to.

In the apparatus of this embodiment, the connecting member 42 has the nut 40A which is the receiving member 40 and the movable frame 12.
In addition to the effect of connecting the female threaded drive member 32 through the lock mechanism in a rotationally stopped state, when the screw of the female threaded drive member 32 wears and is about to fall, it is suspended so as to receive the female threaded drive member 32. It acts as a suspension medium for suspension, the details of which will be described later in connection with the operation description of the apparatus.

Next, the operation of the moving body driving apparatus 10 shown in FIG. 8 will be described. When the screw shaft 30 rotates, the female-threaded driving member 32, which is stopped from rotating, moves the movable frame 120.
The nut 40 that moves up and down together is the receiving member 40
Since A is connected in a rotation-stopped state via the connecting screw 42C, this nut 40A moves up and down together with the female threaded drive member 32, and therefore the nut 40A which is the receiving member 40 and the female threaded drive member 32 (or The distance from the movable frame 120) is always kept constant.

When the screw of the driving member 32 with an internal thread is worn by the weight of the movable frame 120 as a moving body and tries to drop from the screw shaft 30, the connecting screw 42C also tries to descend, so that the head 42c thereof. Is received by the collar 40a of the nut 40A that is the receiving member 40, and the connecting screw 42C acts as a suspension portion. Therefore, the female threaded drive member 32 is received together with the movable frame 120 by the receiving member 40 via the movable frame 120 and the connecting screw 42C.

Also in this embodiment, as in the embodiment shown in FIGS. 1 to 7, since the distance between the female threaded drive member 32 and the receiving member 40 is always kept constant, the screw of the female threaded drive member 32 is worn. Even if it comes off the screw shaft 30,
The female-threaded drive member 32 is received by the collar 40a of the nut 40A, which is the receiving member 40, which is always arranged at a small constant distance from the drive member 32, without a large impact. As can be seen from FIG. 8, in particular, the receiving action of this form is the connection screw 42C.
Since the driving member 32 with a female screw and the movable frame 120 which is a moving body are suspended via the screw, the displacement of the driving member 32 with a female screw and the movable frame 120 is caused by the head 42c of the connecting screw 42C and the receiving nut 40A. It can be seen that the impact at the time of receiving is even smaller because it is extremely small corresponding to the distance from the collar 40a. Connection screw 4
The head 42c of 2C is the collar 40 of the receiving nut 40A.
It is understood that the engagement with a is more preferable because there is almost no drop displacement of the female-threaded drive member 32.

Similarly, the connecting screw 42C fixed to the female threaded drive member 32 penetrates the through hole 44 of the collar 40a of the nut 40A, which is the receiving member 40, with play, so that the screw shaft Even if the meshing precision between the screw 30 and the female threaded drive member 32 or the receiving member 40 is low, this is absorbed by the play between the connecting screw 42C and the through hole 44, so that their mutual meshing is prevented. There is no interference.

[0045]

According to the present invention, as described above, when the screw of the female threaded drive member is worn and the female threaded drive member is about to drop together with the moving body, the receiving member screwed to the screw shaft is provided. Since it receives the drive member,
Since this drive member does not fall to the floor, the worker can enter below the moving body as necessary,
The necessary work can be done safely.

Since the receiving member moves along the screw shaft together with the internally threaded driving member by the rotation of the screw shaft, the receiving member can be arranged close to the internally threaded driving member, and therefore the internally threaded driving member is worn. Then, the impact when received by the receiving member is small, the receiving member does not require particularly high rigidity, and the receiving member is not destroyed by this impact.

Further, when the receiving member moves along the screw axis together with the female threaded driving member, the female threaded driving member is not restricted in its moving path by the receiving member, and therefore, of the moving body having a long moving path. It can be applied to driving.

The connecting member for connecting the receiving member and the female threaded driving member has one end fixed to the female threaded driving member and the other end having play in the receiving member, or both ends thereof having female threads. Although it is fixed to the driving member and the receiving member, if a flexible structure that allows twisting is partially provided, the screw shaft and the driving member, or the screw threads of the screw shaft and the receiving member may not match accurately or Even if there is a meshing abnormality due to a difference in lash, this abnormality can be absorbed by the play and the flexible structure, so that the driving member and the receiving member do not require high screw precision, and the device can be easily assembled. .

In particular, the receiving member is screwed onto the screw shaft above the female screw drive member, and the connecting member suspends the female screw drive member when the female screw drive member is disengaged from the screw shaft. It is preferable to have the hanging portion because when the drive member with the female screw wears and is received by the receiving member, the displacement of the drive member with the female screw is small or almost nonexistent, and the impact received by the receiving member is further reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a cross section of a main part of one half of a gate type winder equipped with a moving body drive device using a screw shaft according to the present invention.

2 is a II of FIG. 1 showing a relationship between a drive member with a female screw used in the present invention, an elevating arm that is a moving body, and a guide cylinder.
FIG. 7 is an enlarged cut end view of the line II.

FIG. 3 is an enlarged vertical cross-sectional view showing the relationship between a drive member with a female screw used in the present invention and a lifting arm that is a moving body.

FIG. 4 is a bottom view showing a state where a drive member with a female screw and a lifting arm used in the present invention are enlarged and taken along line IV-IV in FIG.

5 is a bottom view of a receiving member, a driving member with a female screw, and an elevating arm used in the present invention in an enlarged view along line VV in FIG.

FIG. 6 is a bottom view showing an enlarged view of another form of the receiving member used in the present invention.

FIG. 7 is an enlarged front view of a main part of still another form of the receiving member used in the present invention.

FIG. 8 is an enlarged vertical cross-sectional view showing a main part of another application example of the moving body drive device according to the present invention.

FIG. 9 is a front view showing a cross section of a main part of one half of a portal type winder equipped with a moving body driving device using a screw shaft according to a conventional technique.

[Explanation of symbols]

 10 Moving Body Driving Device Using Screw Shaft 12 Gate Frame 14 Upper Frame Part 16 Guide Tube 18 Guide Roller 20 Elevating Arm 22 Winding Drum 22a Spindle Support Hole 24 Spindle 26 Drive Motor 28 Gear Box 30 Screw Shaft 32 Drive with Female Screw Member 33 Screw 34 Roller receiver 40 Retaining member 40A Nut 40a Collar 41 Nut 42 Connecting member 42A Connecting pin 42B Coil-like body 42b Mounting rod part 42b 'Mounting rod part 42C Connecting screw 42c Head 43 Fixing tool 43' Fixing hole 44 44 Lockout nut 100 Gate type winder 120 Movable frame F Floor

Claims (5)

[Claims] 1. A movement using a screw shaft, which moves a moving body having a female-threaded driving member that is screwed onto the screw shaft in a non-rotatable state, along a central axis of the screw shaft by rotation of the screw shaft. In the body driving device, a receiving member that is screwed to the screw shaft, and a connecting member that directly or indirectly connects the female-threaded driving member and the receiving member to each other, the receiving member Normally, the female screw drive member is moved along the screw shaft together with the female screw drive member by the rotation of the screw shaft without receiving the gravity of the female screw drive member, but the internal screw drive member and the screw shaft are screwed together. The internal threaded drive member by the connecting member so as to receive the internal threaded drive member when the connector is disengaged. A moving body drive device using a screw shaft, characterized in that the moving body drive device is connected to. 2. A moving body drive device using the screw shaft according to claim 1, wherein the receiving member is screwed onto the screw shaft below the female-threaded drive member, and the connecting member is A moving body drive device using a screw shaft, wherein one end is fixed to the female-threaded drive member and the other end is engaged with the female-threaded drive member so that the receiving member moves together with the female-threaded drive member. 3. The moving body drive device using the screw shaft according to claim 2, wherein the connecting member comprises a connecting pin penetrating with a play in a through hole of the receiving member. A moving body driving device using a screw shaft, which is characterized in that 4. The moving body drive device using the screw shaft according to claim 1, wherein the connecting member is fixedly connected between the female-threaded drive member and the receiving member, and A moving body drive device using a screw shaft, characterized in that it has a flexible structure that allows a partial twist. 5. A moving body drive device using the screw shaft according to claim 1, wherein the receiving member is screwed onto the screw shaft above the female-threaded drive member, and the connecting member is A moving body drive device using a screw shaft, comprising: a suspension part that suspends the female screw drive member when the female screw drive member is out of screw engagement with the screw shaft.