KR102380425B1 - belt winding device - Google Patents

Abstract

A belt winding device for winding the mesh belt in a mesh belt type continuous sintering furnace for sintering a work disposed on the mesh belt. The belt winding device includes: a hollow winding roll for winding a mesh belt on the outer periphery; It is provided and the support mechanism which supports the said winding-up roll rotatably is provided. The winding roll is detachably connected to the drive mechanism and the support mechanism.

Description

belt winding device

The present invention relates to a belt winding device.

A sintered compact obtained by sintering a compact obtained by press-molding metal powder such as iron powder is used for automobile parts, general machine parts, and the like. Such a sintered compact can be manufactured using a mesh belt type continuous sintering furnace using a mesh belt.

10 is a cross-sectional explanatory view of a general mesh belt type continuous sintering furnace (hereinafter, also simply referred to as a “sintering furnace”) 100 . The sintering furnace 100 includes a furnace body 101 made of a metal muffle having a dome-shaped cross section, and an endless mesh belt 102 running in the furnace body 101 . A work W to be heated is disposed on the mesh belt 102 . The furnace body 101 has a degassing zone 103, a sintering zone 104, and a cooling zone 105 in order from the inlet side (left side in FIG. 10) toward the outlet side. The mesh belt 102 is placed over a drive pulley 106 provided on the inlet side of the furnace body 101 and a driven pulley 107 provided on the outlet side. The mesh belt 102 travels in the furnace body 101 in a state where tensile stress is applied by driving the drive pulley 106 with a motor (not shown). In the sintering zone 104, for example, the mesh belt 102 exposed to a high temperature of about 1100 to 1200° C. is cooled to a temperature of about 100° C. when exiting the cooling zone 105 . In addition, reference numeral '108' in FIG. 10 is a conveying roller installed on the floor surface to reduce the resistance during running of the mesh belt 102, and reference numeral '109' is for accommodating the stretched mesh belt 102. is a pit.

Although the mesh belt 102 is made of stainless steel such as SUS310 or SUS316 having high hot strength and heat resistance, for example, tensile stress is applied and it is used in an environment with large temperature changes as described above. This causes a large sagging in a relatively short period of time. For example, in the case of a mesh belt having a total length of about 50 m, there are cases where a slack of about 1 m occurs in two weeks. For this reason, in the sintering furnace 100, the sagging of the mesh belt 102 is checked regularly, and whenever a predetermined slack arises, the mesh belt 102 is cut|disconnected and the maintenance is performed.

However, when the slack margin of the mesh belt 102 reaches the limit, it is necessary to replace the entire mesh belt with a new one. The replacement of the mesh belt 102 was conventionally performed by manpower, and the operation of cutting out one location of the used mesh belt 102 and taking out and cutting several meters was repeated. The mesh belt 102 is made of metal, for example, in the case of the mesh belt 102 having a width of 100 cm, it is very heavy at about 20 kg/m, so this mesh belt 102 replacement operation is a heavy labor and risky operation. Moreover, it was necessary to repeat the extraction operation|work and cutting operation|work for every several meters, and it required a long time until completion of an operation|work.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a belt retractor capable of safely and easily replacing a mesh belt in a short time.

A belt winding device according to an aspect of the present invention is a belt winding device for winding the mesh belt in a mesh belt type continuous sintering furnace for sintering a work disposed on the mesh belt,

A hollow winding roll that winds a mesh belt around the periphery,

a driving mechanism provided on one end of the winding roll in the axial direction to rotate the winding roll;

A support mechanism provided on the other end of the take-up roll in the axial direction to rotatably support the take-up roll.

to provide

The winding roll is detachably connected to the drive mechanism and the support mechanism.

According to the invention, it is possible to safely and easily exchange the mesh belt in a short time.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of an example of the mesh belt type continuous sintering furnace provided with the mesh belt wound by the belt winding-up apparatus of this invention.
It is a perspective explanatory drawing of one Embodiment of the belt winding-up apparatus of this invention.
3 is a perspective explanatory view of the winding roll.
FIG. 4 is a cross-sectional explanatory view of the take-up roll shown in FIG. 3 .
It is explanatory drawing of the back side of the belt winding-up apparatus shown in FIG.
6 is a partial explanatory view of a drive mechanism;
7 is a front explanatory view of the rotating body.
Fig. 8 is a perspective explanatory view of a support mechanism;
It is explanatory drawing of a winding operation|work.
It is explanatory drawing of a winding operation|work.
9C is an explanatory diagram of a winding operation.
It is explanatory drawing of an example of the conventional mesh belt type continuous sintering furnace.

[Description of embodiment of the present invention]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0010] Embodiments of the present invention are initially described by opening them.

A belt winding device according to an aspect of the present invention,

(1) a belt winding device for winding the mesh belt in a mesh belt type continuous sintering furnace for sintering a workpiece disposed on the mesh belt,

A hollow winding roll that winds a mesh belt around the periphery,

a driving mechanism provided on one end of the winding roll in the axial direction to rotate the winding roll;

A support mechanism provided on the other end of the take-up roll in the axial direction to rotatably support the take-up roll.

to provide

The winding roll is detachably connected to the drive mechanism and the support mechanism.

In the belt take-up device according to this aspect, a used mesh belt can be wound around the outer periphery of the hollow take-up roll, and the take-up roll is driven by a drive mechanism provided on one end side in the axial direction of the take-up roll. In addition, since the take-up roll is detachably connected to the drive mechanism and the support mechanism provided on the other end side in the axial direction of the take-up roll, the take-up roll can be removed from the drive mechanism and the support mechanism after winding is completed. Therefore, the mesh belt can be wound up only by rotating the take-up roll by the drive mechanism without resorting to manpower, and the mesh belt can be replaced safely and easily. In addition, since the mechanical force is used, the replacement operation can be completed in a short time.

(2) In the belt winding device of (1) above, an opening is formed on the outer peripheral surface of the winding roll, and a hook part for hooking and fixing a wire attached to the end of the mesh belt is provided at the edge of the opening it is preferable In this case, the end of the mesh belt can be connected to the take-up roll by hooking and fixing the wire attached to the end of the mesh belt to the hook portion.

(3) In the belt winding apparatus of (1) or (2) above, a wall is provided on the inner peripheral surface of the winding roll, the tip of the rod inserted from the opening of one end of the winding roll can contact; desirable. In this case, the winding roll can be pulled out from the wound mesh belt by pressing the wall in the axial direction by means of a rod inserted from an opening at one end of the winding roll removed from the belt winding device after winding of the mesh belt is completed. there is. In addition, when the end of the mesh belt is temporarily fixed to the take-up roll at the start of winding the mesh belt, it is necessary to release the temporary fix prior to the extrusion operation with the rod body.

(4) In the belt take-up device of (1) to (3) above, the drive mechanism includes a motor, a speed reducer for decelerating the rotation of the motor, and one end in the axial direction of the take-up roll to rotate by the motor It can be provided with the rotating body which transmits to the said winding-up roll. In this case, the take-up roll can be rotated through the speed reducer and the rotating body by rotating the motor.

(5) In the belt take-up device of (4) above, the rotating body has a short cylindrical convex portion fitted into an opening at one end of the axial direction of the take-up roll, and on the peripheral surface of the convex portion, the winding of the take-up roll It is preferable that a positioning pin, which engages with a cutout formed at one end in the axial direction, is provided. In this case, the contact winding roll can be connected to the rotation body of the drive mechanism simply by engaging the cut-out of the winding roll with the positioning pin on the circumferential surface of the convex part of the rotation body. The driving force by the motor can be transmitted to the take-up roll through the positioning pin.

[Details of embodiment of the present invention]

Hereinafter, the belt winding apparatus of this invention is demonstrated in detail. In addition, this invention is not limited to these illustrations, It is shown by a claim, and it is intended that the meaning equivalent to a claim, and all the changes within the range are included.

1 is an explanatory view of an example of a mesh belt type continuous sintering furnace provided with a mesh belt wound by the belt take-up device of the present invention, and FIG. 2 is a perspective view of the belt take-up device according to an embodiment of the present invention. It is an explanatory diagram.

The sintering furnace 1 includes a furnace body 2 made of a dome-shaped muffle made of metal or the like, and an endless mesh belt 3 running in the furnace body 2 . do. The mesh belt 3 is made of stainless steel having high hot strength and heat resistance, such as SUS310 or SUS316, for example. On the mesh belt 3, the work W which consists of a molded object obtained by press-molding metal powder, such as iron powder, is arrange|positioned.

The furnace body 2 has a degassing zone 4, a sintering zone 5, and a cooling zone 6 in order from the inlet side (left side in FIG. 1) toward the outlet side. The mesh belt 3 is placed over a drive pulley 7 provided on the inlet side of the furnace body 2 and a driven pulley 8 provided on the outlet side. The mesh belt 3 drives the drive pulley 7 with a motor (not shown) installed in the vicinity of the drive pulley 7 to run in the furnace body 2 in a state where tensile stress is applied. do.

In the degassing zone 4, the work W is heated by heating means, such as a gas burner and an electric heater, to about 650-750 degreeC, for example. While the workpiece W passes through the degassing zone 4, wax-type lubricant components such as zinc stearate and metal soap used for press-molding metal powder are thermally decomposed and removed.

The work W that has passed through the degassing zone 4 is heated to a predetermined sintering temperature (eg, about 1100 to 1200° C.) in the subsequent sintering zone 5 . Heating can be performed using, for example, a heating element such as nichrome or kanthal provided in the sintering zone 5 . In addition, at the time of sintering, atmospheric gas, such as nitrogen gas and a modified gas, is introduce|transduced into the sintering zone 5.

The workpiece W, which has passed through the sintering zone 5, is cooled in the subsequent cooling zone 6 by cooling means such as a water jacket (not shown) provided in the furnace body 2, for example, from 900 to 100. It is cooled down to about °C. The work W, which has passed through the cooling zone 6 and completed the sintering process, is discharged from the outlet 9 of the furnace body 2 and is recovered for moving to the subsequent process.

A plurality of conveying rollers (10) are laid on the bottom surface of the lower side of the furnace body (2), and the mesh belt (3) exits the outlet (9) of the furnace body (2) and passes through the driven pulley (8). travels on this conveying roller 10 and returns to the drive pulley 7 .

A pit 11 is installed on the floor right in front of the inlet of the furnace body 2 . This pit 11 is a space for accommodating the mesh belt 3 stretched by high temperature creep. The mesh belt 3 immediately after replacement is in the state shown by the double-dotted line in FIG. 1, but as the sintering furnace 1 is operated, it droops downward as shown by the solid line little by little. When this downward sag becomes severe and the mesh belt 3 reaches the bottom surface 11a of the pit 11, the mesh belt 3 is deformed and it becomes impossible to run normally, so the maintenance of the mesh belt 3 in advance (cutting work and joining work) need to be done. The mesh belt 3 passing through the drive pulley 7 is guided by a plurality of guide rollers 12 and guided into the furnace.

As shown in FIG. 2, the belt take-up apparatus 20 which concerns on this embodiment has the winding roll 30 which winds the mesh belt 3 on the outer periphery, and the drive mechanism 40 which rotates this winding roll 30. ) and a support mechanism 50 for rotatably supporting the winding roll. The belt winding device 20 is installed on the base 21 of a substantially U-shape in plan view. The base 21 includes a center member 22 , a first side member 23 connected to one end of the center member 22 , and a second side member 24 connected to the other end of the center member 22 . is composed of A drive mechanism 40 is provided on the first side member 23 , and a support mechanism 50 is provided on the second side member 24 . Each member constituting the base 21 is made of steel. Wheels 25 with stoppers are attached to lower surfaces in the vicinity of both ends of the first side member 23 and the second side member 24 . The belt winding device 20 may move to a place where the mesh belt 3 is wound by using the belt winding device 20 , and when in use, the wheel 25 may be immobilized by a stopper. Moreover, in the belt winding-up apparatus 20 which concerns on this embodiment, when a power supply is separated from the said belt winding-up apparatus 20, the electro-pneumatic drum 61 for supplying electricity to the drive mechanism 40 from a power supply is arrange|positioned. A tray-shaped table 62 to be placed is provided on the upper surface of the second side member 24 .

As shown in FIG. 3 , the winding roll 30 is a hollow member having both ends open, and is made of a steel pipe. The winding roll 30 has a length (length in the axial direction) slightly larger than the width of the mesh belt 3 to be wound. In addition, in this specification, "axial direction" means the longitudinal direction thru|or the pipe axis direction of the winding roll 30. As shown in FIG. In addition, the one end side of the axial direction means the side connected to the drive mechanism 30 among the both sides of the axial direction of the winding roll 30 (upper right side in FIG. 3), and the other end side of the axial direction means the winding roll 30 ) refers to the side (lower left in FIG. 3 ) connected to the support mechanism 50 among both sides in the axial direction.

An elliptical or rectangular opening 31 is formed in the outer peripheral surface 30a of the winding roll 30 in the vicinity of the center in the axial direction. This opening part 31 is used when attaching the edge part of the cut|disconnected mesh belt 3 to the take-up roll 30 so that it may mention later. Since the attachment of the end portion of the mesh belt 3 is performed manually (manual operation by an operator), the opening 31 has a size and shape that allows the operator's hand to be put inside the winding roll 30 .

FIG. 4 is a cross-sectional explanatory view of the take-up roll 30 shown in FIG. 3 . A hook portion 33 capable of hooking and fixing a wire (see FIG. 9B ) 32 attached to the cut end of the mesh belt 3 is provided at the edge portion 31a of the opening 31 . The hook portion 33 can be produced by processing a steel plate or the like, and is fixed to the inner peripheral surface 30b in the vicinity of the edge portion 30a of the winding roll 30 by welding or the like.

A wall 34 made of a steel plate or the like is installed inside the winding roll 30 . The wall 34 is fixed to the inner peripheral surface 30b of the winding roll 30 by welding or the like. The wall 34 is used to take out the take-up roll 30 from the bundle of the mesh belt 3 wound around the outer periphery of the take-up roll 30 after the winding of the mesh belt 3 is completed. The wall 34 is provided at a position where the tip of the rod inserted from the opening 35 at one end of the winding roll 30 can contact, and the wall 34 is moved in the axial direction (winding roll 30) with the rod. ) in the axial direction), the winding roll 30 can be pulled out from the roll-type mesh belt 3 . As the rod body, for example, a fork of a forklift can be used. In addition, when the end of the mesh belt 3 is temporarily fixed to the winding roll with a wire 32 at the start of winding of the mesh belt 3, prior to the extrusion operation by the rod body, the hook portion 33 It is necessary to release the wire 32 that has been hooked and fixed from the hook portion 33 .

The drive mechanism 40 is provided on the 1st side member 23 of the base 21, which is located in the axial direction one end side of the take-up roll 30, as shown in FIG. The drive mechanism (40) includes a motor (41), a speed reducer (42) provided above the motor (41) and decelerating the rotation of the motor (41), and a winding roll for rotation by the motor (41). It is provided with a rotating body 43 (refer to FIGS. 6 and 7) which transmits to 30. The rotation of the motor 41 includes a gear mechanism 44 installed on the upper part of the motor 41, and a sprocket (not shown) and a roller chain (not shown), the first power transmission device 45 . It is transmitted to the reducer 42 through the. The rotation of the motor 41 reduced by the reduction gear 42 is wound through the second power transmission device 46 and the rotating body 43 composed of a sprocket (not shown) and a roller chain (not shown). is transferred to the roll 30 .

As shown in FIG. 6 , the rotating body 43 is installed concentrically with the sprocket 47 on the winding roll 30 side among the pair of sprockets of the second power transmission device 46 . The rotating body 43 is formed so that it may become integral with the shaft of the sprocket 47 on the said winding roll 30 side. The rotating body 43 is provided with the base part 43a which consists of a cylindrical body with a small diameter, and the convex part 43b which consists of a cylindrical body with a larger diameter than this base part 43a. The base portion 43a is provided in the first cylindrical housing 27 provided on the upper surface of the first pillar portion 26 erected on the first side member 23 . A first collar portion 28 is provided at the end of the first housing 27 on the take-up roll 30 side. An end surface of the convex portion 43b on the second power transmission device 46 side faces the first collar portion 28 . In the base portion 43a of the rotating body 43, a torque limiter (not shown) in order to prevent an overload from acting on the motor 41 constituting the drive mechanism 40 or the like when the mesh belt 3 is wound. is installed

The convex portion 43b has a size that can be inserted into the opening 35 of one end in the axial direction of the take-up roll 30 . In other words, the diameter of the convex portion 43b is made smaller than the inner diameter of the take-up roll 30 by about 1 mm. A positioning pin 48 is provided on the circumferential surface 43c of the convex portion 43b. This positioning pin 48 is engageable with the cutout 36 formed at one end of the winding roll 30 in the axial direction. In attaching the take-up roll 30 to the belt take-up device 20, by engaging the cut-out portion 36 of the take-up roll 30 with a positioning pin 48, the take-up roll 30 is simply attached to a rotating body ( 43) can be accessed. The positioning pin 48 has a function of positioning and also has a function of transmitting the driving force by the motor 41 to the take-up roll 30 . As the positioning pin 48, for example, a bolt embedded in the circumferential surface 43c of the convex portion 43b can be used.

The support mechanism 50 is provided on the second side member 24 of the base 21 located on the other end side in the axial direction of the winding roll 30 . The support mechanism 50 rotatably supports the winding roll 30 . In other words, the winding roll 30 is supported while allowing rotation of the winding roll 30 . As shown in FIG. 8 , the support mechanism 50 includes a pair of support bars 52 , and a support body 53 , which are attached to the second post part 51 erected on the second side member 24 . ), a second housing 54 , and a lever 55 .

The support bar 52 stands on the side surface (the side surface of the 1st side member 23 side) 51a of the 2nd pillar part 51. As shown in FIG. A short cylindrical support plate 56 is installed at the tip of the support bar 52 . The winding roll 30 is arrange|positioned on this support plate 56. As shown in FIG. The diameter of the support plate 56 is set larger than the diameter of the support bar 52 which shows a cylindrical shape by about 1 mm. In this way, the winding roll 30 is supported by the support plate 56 in the state spaced apart from the support bar 52 .

The support body 53 includes an insertion portion 57 inserted into the opening on the other end side of the winding roll 30 , and a shaft portion 58 having one end connected to the lever 55 and the other end fixed to the insertion portion 57 . be prepared A tapered portion 59 is formed at the tip of the insertion portion 57 so that the insertion portion 57 can be smoothly inserted into the opening on the other end side of the take-up roll 30 . In addition, a second joint portion 60 is installed at the root of the insertion portion 57 . When the insertion part 57 is inserted into the opening of the winding roll 30, the side surface 60a of the 2nd collar part 60 comes into contact with the end surface 30c (refer FIG. 3) of the winding roll 30. do.

The second housing 54 is made of a cylindrical member having a through hole, and the shaft portion 58 of the support body 53 is installed in the through hole to be movable in the axial direction. As for the lever 55, the base part is rotatably attached to the 2nd pillar part 51, and, as shown by the arrow in FIG. By pressing toward the first side member 23, the support 53 can be moved toward the first side member 23, and by pulling the lever 55 toward the second side member 24 along the axial direction, the support ( 53) may be moved toward the second side member 24 side.

Next, an example of the method of winding up the mesh belt 3 using the belt winding apparatus 1 mentioned above is demonstrated.

First, the belt winding device 20 is installed on the inlet side of the furnace body part 2 of the sintering furnace 1 and in the vicinity of the pit 11 (refer to FIGS. 1 and 9A ).

Next, the mesh belt 3 is fixed to the guide roller 12 using a wire or the like in the vicinity of the plurality of guide rollers 12, for example, indicated by 'A'. This is to prevent the end of the mesh belt 3 from falling into the pit 11 at the time of cutting the mesh belt 3 to be described later.

Next, the mesh belt 3 positioned on the stage 13 in front of the inlet of the furnace body 2 is cut. The cutting operation is performed by removing a pin member (not shown) provided along a direction orthogonal to the longitudinal direction (running direction) of the mesh belt 3, or when the pin member is deformed and cannot be removed, a minus screwdriver, etc. This can be done by cutting the pin member with

Next, a wire 32 is attached to one end 3a (end located on the left side in Fig. 9A) of the cut mesh belt 3 (see Fig. 9B). Then, one end 3a of the mesh belt 3 from which the fixing to the guide roller 12 is released is attached to the winding roll 30 of the belt winding device 20 . At that time, as described above, the wire 32 is hooked and fixed to the hook portion 33 provided at the edge portion 31a of the opening portion 31 of the winding roll 30 (see FIG. 9C ). This operation is performed by an operator holding the tip of the wire 32 and putting a hand into the winding roll 30 from the opening 31 of the winding roll 30 .

Next, a new mesh belt 3' wound up into a roll shape is installed on the stage 13 just in front of the inlet of the furnace body part 2, and its end is attached to the other end of the previously cut mesh belt 3 (3b) (end located on the right side in Fig. 9A).

Next, the drive mechanism 40 of the belt winding device 1 and the drive pulley 7 of the sintering furnace 1 are driven. Thereby, in parallel with the winding-up operation of the used mesh belt 3, the installation operation|work of the new mesh belt 3' can be performed. The rotational speed of the motor which drives the motor 41 of the drive mechanism 40 and the drive pulley 7 is adjusted so that the moving speed of the mesh belt becomes about 40 cm/min.

[Other Modifications]

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims.

For example, in the above-described embodiment, a molded body obtained by press-molding metal powder such as iron powder as a workpiece disposed on a mesh belt and sintered in a sintering furnace is exemplified, but other materials such as ceramics can be sintered there is.

1: sintering furnace 2: furnace body
3: mesh belt 3': mesh belt
3a: end 3b: end
4: degassing zone 5: sintering zone
6: Cooling zone 7: Drive pulley
8: driven pulley 9: outlet
10: conveying roller 11: pit
12: Guide 13: Stage
20: belt winding device 21: base
22: center member 23: first side member
24: second side member 25: wheel
26: first pillar portion 27: first housing
28: first joint part 30: winding roll
30a: outer periphery 30b: inner periphery
30c: edge 31: opening
32: wire 33: hook portion
34: wall 35: opening
36: cutout 40: drive mechanism
41: motor 42: reducer
43: rotating body 43a: base portion
43b: convex portion 43d: circumferential surface
44: gear mechanism 45: first power transmission device
46: second power transmission device 47: sprocket
48: positioning pin 50: support mechanism
51: second pillar portion 51a: side
52: support bar 53: support
54: second housing 55: lever
56: support plate 57: insertion part
58: shaft portion 59: tapered portion
60: second joint part 61: electric drum
62: Table 100: Continuous sintering furnace
101: furnace body part 102: mesh belt
103: degassing zone 104: sintering zone
105: cooling zone 106: drive pulley
107: driven pulley W: work

Claims (5)

A belt winding device for winding the mesh belt in a mesh belt type continuous sintering furnace for sintering a work disposed on the mesh belt, comprising:
A hollow winding roll that winds a mesh belt around the periphery,
a driving mechanism provided on one end of the winding roll in the axial direction to rotate the winding roll;
A support mechanism provided on the other end of the take-up roll in the axial direction to rotatably support the take-up roll.
to provide
The winding roll is detachably connected to the drive mechanism and the support mechanism,
The belt winding device, which is provided with a wall on the inner circumferential surface of the take-up roll, the front end of the rod inserted from the opening of one end of the take-up roll can be in contact with. According to claim 1,
An opening is formed on the outer peripheral surface of the winding roll, and a hook portion capable of hooking and fixing a wire attached to an end of the mesh belt is provided at an edge of the opening. delete 3. The method of claim 1 or 2,
The drive mechanism includes a motor, a speed reducer for decelerating the rotation of the motor, and a rotating body connected to one end in the axial direction of the take-up roll to transmit rotation by the motor to the take-up roll. . 5. The method of claim 4,
The rotating body has a short cylindrical convex portion fitted into an opening at one end in the axial direction of the take-up roll, and engages with a cutout formed at an axial end of the take-up roll on a circumferential surface of the convex portion. A belt winding device, in which a pin is installed.

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