JPH0773764B2 - Pressing and conveying device for long pipes - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pressing and conveying device for long pipes and the like, and more particularly, to a conveying device for conveying long pipes to a push-through bending device and the like. The present invention relates to a device that supplies a strong conveying force with a simple structure without damaging the surface of the above.

[Prior Art] The inventor of the present application has previously described "push-through bending method and bending apparatus in the same direction" as a means for highly accurately bending a pipe or the like with a simple device (Japanese Patent Application No. 1-120894). Is proposed.

The basic structure of this processing method is shown in Fig. 11.
It consists of a guide cylinder 102 for inserting while holding the 101 and a die 103 for holding a part of the pipe material 101 penetrating the guide cylinder 102 with a bearing portion 103a. The center axis of the guide cylinder 102 and the bearing of the die 103. The method is characterized in that the tube material 101 is pushed through the guide cylinder 102 and the die 103 in a state where the center of the portion 103a is relatively offset. ”According to the method, the guide cylinder 102
And by simply controlling the offset u of the die 103, continuous bending with an arbitrary bending radius is possible, and
It is possible to realize processing that suppresses deformation of the cross section of the pipe material 101 or the like. The bending radius can also be controlled by controlling the approach v.

Then, as a concrete device for carrying out this bending method, the configuration shown in FIG. 12 (side view), FIG. 13 (front view), and FIG. 14 (plan view) is adopted. Has been done.

This device is mounted on a movable table 112 that can be moved only in the x-axis direction by an AC servo motor Mx with respect to the main body section 111 side, and on the movable table 112. Mobile stand that can be moved only in the y-axis direction with My
The moving die 113 is provided with the die 103. A guide cylinder 102 is attached to the main body 111 side, and a feed mechanism 114 for the pipe material 101 is provided.

Based on such a configuration, in this apparatus, by controlling the AC servo motors Mx and My, the moving table 113 can be moved vertically and horizontally in the relative relationship with the guide cylinder 102. Then, when the pipe member 101 is pushed through by the feed mechanism 114 in a state where the die 103 is offset by u with respect to the guide cylinder 102, the pipe member 101 is offset with respect to the pipe member 101 in a manner as shown in FIGS. 11 and 12. Bending in the direction will be performed.

Here, in the above apparatus, since the bending is performed by sliding the surface of the pipe material 101 with the bearing portion 103a of the die 103, in order to push the pipe material 101 through, the friction generated by the sliding contact processing is performed. With a force greater than the force 101
Although it is necessary to press, the feeding mechanism 114 of this device
In the case of the pipe material,
While pressing 101, one of the rollers 114a is driven to rotate to convey the pipe material 101 and the like.

[Problems to be Solved by the Invention] In the feeding mechanism 114, it is necessary to increase the frictional force between the pipe member 101 and the feeding roller 114a in order to increase the pushing force. There are a method of increasing the narrow pressure of 114a and a method of increasing the friction coefficient by forming knurls on the narrow surface of the feed roller 114a side.

However, if too narrow pressure is applied by the method (1), there is a risk of flattening the pipe material (101) before bending, and with the method (2), the surface of the pipe material (101) will be damaged over the axial method, and in any case bending There is a risk that processing will be hindered and the quality of the final product will be deteriorated.

In particular, when an aluminum pipe material or the like is processed, those disadvantages become remarkable.

Further, in the feed mechanism 114, the pipe material 101 is inserted from the rear end portion of the mechanism, so that a space corresponding to the length of the required pipe material 101 is secured on the rear side of the feed mechanism 114. It is necessary and hinders space saving in factories where bending equipment is installed.

Therefore, the present invention was created for the purpose of providing a "pressing and conveying device for pipes and the like" which is most suitable for the bending device and the like, and thus solving various problems found in the conventional feeding mechanism.

[Means for Solving the Problems] The present invention is directed to two fixings for holding both side surfaces of a long tubular material or a long solid material in the axial direction through a space through which the long tubular material or the long solid material is inserted. Between the long shaped member and the both sides of the running rod which is loosely fitted in the space and has its tip end engaged with the end of the long tubular member or the long solid member. A traveling unit in which two plate materials thinner than the configured gap are attached as a driving force transmission plate, and a driving mechanism for supplying a driving force to the driving force transmission plate of the traveling unit in the axial direction of the elongated shape member. The present invention relates to a pressing and conveying device for a long pipe or the like, which is characterized by being provided.

Further, in this apparatus, if one of the long shaped members can be opened and closed with respect to the other long shaped member, it is convenient for workability and space saving.

Further, in the case of handling a long pipe, if the connecting mechanism for connecting the long pipe and the traveling rod is configured as follows, it becomes possible to carry out pressing conveyance while preventing the rotation of the pipe.

That is, with respect to a running rod having a small diameter portion formed at its tip, a hollow tubular body is provided with a fitting portion that fits inside a long pipe on the tip side of the outer periphery and an end surface of the long pipe on the rear side. A coupling body in which an engaging portion that engages with is formed, a tip end side of the inner circumference is formed as a tapered taper hole, and at least an axial section in which the taper hole is formed is formed with a slit. And a hollow cylindrical body, and a taper portion that fits and slides on the inner periphery of the coupling body is formed on the tip side of the outer periphery, and an engagement portion that engages with the rear end surface of the coupling body is formed on the rear end side. Also, the actuator is formed with a counterbore recess where the small diameter part of the running rod is fitted and slid on the rear end side of the inner circumference. A shaft that protrudes from the tip end surface of the small diameter portion of the traveling rod to the front front surface of the connecting body through the hollow hole of the operating body. When, is provided with a engaging body large-diameter portion to look engagement with the distal end surface of the coupling body and a small diameter portion which saw engagement with the front end face of the actuating member to the tip of the shaft portion is configured.

[Operation] In the present invention, the two fixed elongate shaped members hold the elongate pipe material or the like to be conveyed from both sides in the axial direction, and buckle and bend when the elongate pipe material or the like is pressed. Prevent.

The traveling unit projects each driving force transmission plate laterally from the gap between the two fixed elongated members, and the traveling rod of the unit receives the driving force from the drive mechanism via each driving force transmission plate. As a result, a stroke is made in the axial direction in the space between the fixed elongated members.

As a result, after setting the long pipe material or the like between the fixed long shape members, by engaging the rear end surface of the long pipe material or the like at the tip of the traveling rod, and driving the traveling rod forward. A long pipe material or the like can be pressed and conveyed.

Also, if one of the long sections can be opened and closed with respect to the other long section, it is possible to set the long tube to the fixed long section from the side of the device in the open state. As compared with the case of inserting from the rear end, work efficiency can be improved and work space can be saved.

In the connecting mechanism of the long pipe and the running rod, the running rod moves the rear end of the actuating body in a state where the running rod is advanced and the fitting portion of the connecting body is fitted into the rear end of the long pipe. When pressed, the engaging portion of the actuating body presses the rear end surface of the engaging portion of the connecting body,
The taper portion of the actuating body pushes open the taper hole of the connecting body, and the fitting portion divided by the slit is brought into strong pressure contact with the inner peripheral surface of the long pipe material. Here, the traveling rod, the actuating body, and the connecting body are mutually prevented from rotating by means of a detent key, and the traveling rod is a long-shaped member so as not to rotate as shown in FIG. Therefore, rotation of the long pipe material is prevented.

On the other hand, when the traveling rod retracts, the small-diameter portion of the engaging body first engages with the distal end portion of the actuating body to retract the actuating body, whereby the fitting portion of the connecting portion and the inner peripheral surface of the long tubular material are separated. The high pressure contact state is released. Further, when the traveling rod further retracts, the large diameter portion of the engaging body engages with the tip end surface of the connecting body, and the connecting body and the operating body are pulled out from the long pipe material side.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 10.

Example 1 First, FIG. 1 is a perspective view showing a basic configuration of a long pipe material pressing and conveying device. In FIG. 1, reference numerals 1 and 2 denote an L-shaped material which is a fixed long material. Is a traveling unit, and 4 and 5 are chain belts arranged in parallel with the L-shaped members 1 and 2.

Here, the L-shaped members 1 and 2 are arranged so as to face each other with a space 6 in which the pipe member is loosely fitted, and gaps 7 and 8 are formed on both sides thereof along the axial direction. Has been done.

The traveling unit 3 is mounted on both sides of the traveling rod 3a which is loosely fitted in the space 6 and the driving force transmission which is attached to both sides of the traveling rod 3a so as to project laterally from the gaps 7 and 8. Boards 3b, 3c
And the driving force transmission plates 3b and 3c are attached to the chain belts 4 and 5, respectively. As shown in FIG. 2, a fitting portion 3a-1 which is internally fitted to the rear end portion of the pipe member 9 and an engaging portion 3a-2 which abuts on the pipe end are formed at the tip portion of the traveling rod 3a. There is.

On the other hand, the chain belts 4 and 5 are gears 10,
The teeth 11 and 12, 13 are wound around each other and are rotated by driving the gears 10, 11 to rotate.

Each of the above mechanical elements is assembled as a pressing and conveying device with a configuration as shown in FIG.

That is, first, the lower L-shaped member 2 is fixed via the brackets 16 attached to the plurality of bars 15 which are horizontally mounted on the main body housing 14 of the apparatus, and the upper L-shaped member 2 is fixed. The V-shaped member 1 is fixed to each of a plurality of frames 17a provided horizontally on the cover 17 side of the main body housing 14 via each bracket 18.
When the cover 17 is closed (the state shown in FIG. 3), the upper and lower L
A set space for the pipe material 9 is configured between the character-shaped members 1 and 2. The cover 17 is attached to the main body housing 14 via hinges 19 so as to be openable and closable.

The shafts of the gears 10, 11 and 12, 13 are rotatably supported by the main body housing 14, and the shafts of the gears 10, 11 are transmitted from a motor 20 built in the main body housing 14 via a chain belt 21. It is designed to receive rotational driving force.

In order to press and convey the pipe material 9 with this apparatus, first, as shown in FIG. 4, the cover 17 is opened, the motor 20 is reversely activated, and the traveling unit 3 is moved backward.

Next, the pipe 9 is set on the L-shaped member 2 and the opened cover 17 is closed, so that the L-shaped members 1 and 2 are connected to each other in the state shown in FIG. Hold from above and below.

Then, in this state, when the motor 20 is normally rotated to orbit the chain belts 4 and 5, the traveling unit 3 is driven forward, and the tip of the traveling rod 3a is pipe material in a manner as shown in FIG. The pipe 9 is fitted and engaged with the end of the pipe 9, and the pipe 9 is conveyed while being pushed. This transport speed can be changed arbitrarily by controlling the rotation speed of the motor 20, and the pressing force can also be changed by controlling the output of the motor 20 or changing the gear ratio of the gear around which the chain belt 21 is wound. it can.

By the way, the fixing condition of each L-shaped member 1 and 2 is only to fix with a plurality of brackets 16 and 18 in the axial direction,
The fixed conditions are not so strong. This is because the L-shaped members 1 and 2 only hold the pipe material 9 so that the pipe material 9 does not buckle and buckle when the pipe material 9 is subjected to a large resistance by the bending device in the front. This is because the holding force required to suppress the initial buckling is extremely small if held under the fixed condition of. In other words, the brackets 16,18
Since fixing with simple parts such as the above is allowed, it is possible to adopt means such as making the mounting holes for the bar 15 and the frame 17a elongated as shown in FIG. It becomes possible to adjust the mounting position up and down with a simple operation so as to correspond to the pipe materials 9 having various pipe diameters.

Example 2 Next, an example relating to a connecting mechanism of the pipe material 9 and the traveling rod 3a will be described.

In the connection shown in FIG. 2 by fitting and engaging the running rod 3a with the pipe 9, even if a slight torque is applied to the pipe 9, the pipe 9 will rotate relative to the running rod 3a. You will get it.

On the other hand, when the pipe material 9 conveyed under pressure is subjected to the push-through bending process as shown in FIG. 12, the bending direction is not always selected vertically downward, and the bending in the horizontal direction is selected. Sometimes In that case, as described above, the pipe material 9
Has a rotational degree of freedom with respect to the traveling rod 3, the tubular member 9 bent in the horizontal direction generates a rotational moment due to its own weight, and the entire tubular member rotates, so that normal bending cannot be performed. .

The connecting mechanism described below is configured to enable the pressure conveyance while locking the rotation of the pipe material in such a case.

First, the structure of this mechanism is shown in FIG.

In the figure, 31 is the tip portion of the traveling rod 3, and the small diameter portion 31
A is formed, and a key groove 31b is formed on the outer peripheral surface of the small diameter portion 31a.

Reference numeral 32 denotes a connecting body for the pipe material 9, which is a hollow cylindrical body made of phosphor bronze, and has a fitting portion 32a that is fitted into the pipe material 9 on the tip side of the outer periphery and is attached to the end surface of the pipe material 9 on the rear end side. Engagement part 3 to engage
2b is formed, and the tip end side of the inner circumference is formed as a taper hole 32c, and a key groove 32d is formed on the rear end side of the inner circumference surface. Further, a front view and a side view (including a sectional view) of the connecting body 32 are shown in FIGS. 6 and 7, respectively, and at least the tapered hole is shown.
Slots 32e are formed in the axial section where 32c is formed, and knurls are formed on the outer peripheral surface of the fitting portion 32a.

On the other hand, 33 is an actuating body, and this actuating body 33 is also configured as a hollow cylindrical body, and a taper taper portion 33a, which is fitted and slid on the inner circumference of the connecting body 32, is provided on the rear end side on the tip side of the outer circumference. An engagement portion 33b that engages with the rear end surface of the connecting body 32 is formed,
Further, a counterbore recessed portion 33c into which the small diameter portion 31a of the traveling rod 31 is fitted and slid is formed on the rear end side of the inner circumference. Furthermore, the outer peripheral surface of the tapered taper portion 33a of the actuating body 33 and the counterbore recessed portion 33c.
Key grooves 33d and 33e are formed on the inner peripheral surface of each.

The connecting body 32 and the actuating body 33 are mounted on the key rods 32d, 33d and 31b, 31e in the manner shown in FIG. Are engaged with each other, and further, they are held by the engaging body 36 so as to be slidable in the axial direction. The engagement body 36 has a shaft portion 36a that penetrates the hollow hole of the actuating body 33 and projects toward the front front surface of the coupling body 32 with respect to the tip end surface of the small diameter portion 31a of the traveling rod 31, and at the same time, attaches the shaft portion 36a. A small diameter portion 36b that engages only with the tip surface of the actuating body 33 and a large diameter portion 36c that engages only with the tip surface of the connecting body 32 are attached to the tip.

Next, the operating state of the connecting mechanism will be described with reference to FIGS. 8 to 10.

First, when the traveling rod 31 is pushed and moved from the state shown in FIG. 5 to the pipe material 9 side, the fitting portion 32a of the connecting body 32 is fitted into the pipe material 9 and the engaging portion 32b thereof is fitted as shown in FIG. The pipe end engages and abuts, the rear end surface of the connecting body 32 and the engaging portion 33b of the actuating body 33 engage and abut, and the traveling rod 31 and the rear end surface of the actuating body 33 engage and abut.

Then, at the stage of reaching this state, the taper portion of the actuator 33
33a pushes the fitting portion 32a (divided by the slot 32e) of the connecting body 32 outward, and the fitting portion 32a is the outer peripheral surface where the knurled eye is formed and Lock by pressing the peripheral surface. Further, since the rotation of the traveling rod 31, the actuating body 33, and the connecting body 32 are restricted by the detent keys 34 and 35, the pipe member 9 does not rotate unless the traveling rod 31 rotates.

Therefore, the traveling rod 31 can push and convey the pipe member 9 forward while locking the pipe member 9 in the axial direction and the circumferential direction.
Even when the pipe material 9 is bent in the horizontal direction by the push-through bending apparatus shown in FIG. 12, it is possible to prevent the pipe material 9 from rotating due to the moment due to the weight of the processed pipe material 9.

On the other hand, when the pressing and transporting of the pipe material 9 is completed and the pipe material 9 is detached from the connecting mechanism, it is sufficient to retract the traveling rod 31. In this case, the pipe material 9 is gripped by a die or the like on the side of the processing device, and its movement in the axial direction is restricted.

Here, when the traveling rod 31 is retracted, the engaging body 36 retracts together with the traveling rod 31 as shown in FIG.
The small diameter portion 36b attached to a comes into contact with the tip surface of the actuating body 33. As a result, the retracting force of the traveling rod 31 causes the tapered portion 33a of the actuating body 33 to be pulled out from the tapered hole 32c of the connecting body 32, and the fitting portion 32a of the connecting body 32 that press-locks the pipe member 9 from the inside thereof. The elasticity returns to the initial state, and the pressure lock state is released.

The state released in this way is shown in FIG.
When the traveling rod 31 is further retracted, the large diameter portion 36c of the engaging body 36 comes into engagement with the tip end surface of the fitting portion 32a of the coupling body 32, and the pressing lock state of the coupling body 32 is released. From
The connecting body 32 and the actuating body 33 are pulled out rearward by the shaft portion 36a of the engaging body 36, and the entire connecting mechanism is released from the state of being fitted into the pipe material 9.

By the above operation, this connecting mechanism can press and convey the pipe material 9 while restraining the rotation of the traveling rod 31 only by advancing the traveling rod 31, and can automatically release it from the pipe material 9 only by retracting the traveling rod 31. To

[Advantages of the Invention] The present invention having the above-described configuration has the following advantages.

The invention according to claim (1) is an apparatus having a simple structure, and enables a long pipe material or a long solid material to be pressed and conveyed in the axial direction while maintaining its straightness. In addition, since the present invention does not damage the surface of long pipes or the like, it does not affect the processing conditions in the processing machine at the destination and has the advantage of improving the quality of the product after processing. There is.

According to the invention of claim (2), it is possible to easily set a long pipe material or a long solid material from the side of the apparatus, thereby improving workability and saving space.

According to the invention of claim (3), the connection / disconnection of the long pipe and the traveling rod is automatically executed only by moving the traveling rod forward / backward, and the pressing force is utilized in the pressing and conveying state. Provides the function of restraining the rotation of long pipes.

Therefore, when the processing device of the destination of the long pipe material is a bending device, even if a rotation moment occurs due to the weight of the pipe material after bending, the pipe material is prevented from rotating and the bending condition is increased. Can be prevented from affecting.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a basic structure of a long pipe material pressing and conveying device, FIG. 2 is a sectional view showing a connecting state between a tip portion of a traveling rod and a pipe material, and FIG. FIG. 4 is a front sectional view of the pressing mechanism, FIG. 4 is a front sectional view of the apparatus when the cover is opened, FIG. 5 is an axial sectional view of the coupling mechanism, FIG.
The figure is the same side view (including a partial cross section), FIGS. 8 to 10 are axial cross-sectional views showing the operating state of the connecting mechanism, and FIG. 11 is a view showing the basic configuration of the push-through bending method. FIG. 12 is a side view of the push-through bending apparatus, FIG. 13 is a front view thereof, and FIG. 14 is a plan view thereof. 1,2 …… L-shaped material (fixed long material) 3 …… Traveling unit, 3a …… Traveling rod 3b, 3c …… Drive force transmission plate 4,5 …… Chain belt, 6 …… Space 7 , 8 …… Gap, 9 …… Tube material 10,11,12,13 …… Gear 14 …… Main body housing, 15 …… Bar 16 …… Bracket, 17 …… Cover 17a …… Frame, 18 …… Bracket 19 …… Hinges, 20 …… Motors 21 …… Chain belts, 31 …… Running rods 31 a …… Small diameter parts, 31 b …… Key grooves 32 …… Couplings, 32 a …… Mating parts 32 b …… Engaging parts, 32 c …… Taper hole 32d …… Key groove, 32e …… Slitting 33 …… Actuator, 33a …… Taper part 33b …… Engaging part, 33c …… Counterbore recess 33d, 33e …… Key groove 34, 35… … Rotating key, 36 …… Engagement body 36a …… Shaft, 36b …… Small diameter part 36c …… Large diameter part

Claims (3)

[Claims] 1. Two fixed elongated shaped members for axially embracing both side surfaces of the long tubular material or the long solid material through a space through which the long tubular material or the long solid material is inserted, and the space. Two pieces thinner than the gap formed between the long shaped members are fitted to both ends of the running rod that fits loosely inside and the ends of which engage with the ends of the long tubular material or the long solid material. A long unit comprising a traveling unit having a plate member attached as a driving force transmitting plate, and a drive mechanism for supplying a driving force to the driving force transmitting plate of the traveling unit in the axial direction of the long shaped member. Pressing and conveying device for pipe materials. 2. A pressing and conveying device for a long pipe material or the like according to claim 1, wherein one of the long shape members can be opened and closed with respect to the other long shape member. 3. A connecting mechanism between a long pipe and a running rod is a hollow cylindrical body for a running rod having a small diameter portion formed at its tip end, and is fitted into the long pipe member at the tip end on the outer circumference. The fitting portion is formed with an engaging portion that engages with the end surface of the long pipe material on the rear end side, and the front end side of the inner circumference is formed as a tapered taper hole, and at least the taper hole is formed. A connecting body with a slit formed in the axial section, and a hollow cylindrical body, with a taper portion that fits and slides on the inner circumference of the forward connecting body on the tip side of the outer circumference on the rear end side. An operating member having an engaging portion which engages with a rear end surface of the connecting body, and a counterbore recessed portion into which a small diameter portion of the traveling rod fits and slides is formed on a rear end side of an inner periphery. Make sure that each mating surface is fitted and connected with a locking key, and that the inside of the actuator is A shaft portion that penetrates through the hole and projects toward the front front surface of the connecting body, a small diameter portion that engages only with the tip end surface of the actuating body and a large diameter portion that engages only with the tip end surface of the connecting body at the tip of the shaft portion The pipe material pressing and conveying device according to claim (1) or (2), wherein the structured engaging body is provided.