KR930006040B1 - Roll machine for milling - Google Patents

Abstract

No content.

Description

[Name of invention]

Roll mill

[Brief Description of Drawings]

1 is a partial side view of a roll mill according to a preferred embodiment of the present invention.

2 is an enlarged view of a part of the roll mill shown in FIG.

3 is a partial plan view of the roll mill shown in FIG.

4 is a perspective view of the roll mill shown in FIG.

5 is a partially enlarged cross-sectional view of a roll mill according to another preferred embodiment of the present invention.

6 is a front view of a known roll mill.

FIG. 7 is a partially broken side view of the roll mill shown in FIG.

Detailed description of the invention

[Field of Invention]

The present invention relates to a roll mill.

[Background of invention]

A conventional roll mill will be described with reference to FIGS. 6 and 7. 6 and 7 are divided into two parts 115 and 116 by the separator 114 in the interior of one frame 113, so that each pair of rolls 101 and 102 are symmetrically provided. A double roll mill is shown. Typically the slow rotating roll 102 is disposed near separator 114. The high speed rotary roll 101 is rotatably supported by the fixed bearing 103 and the low speed rotary roll 102 is rotatably supported by the movable bearing 104. Each of the moving bearings 104 is pivotally installed around the point pin 105 so as to adjust the gap between the rolls 101 and 102 with the roll gap adjusting means.

More specifically, the shaft of the roll gap adjusting handle 106 installed outside the frame 113 and the connecting rod 107 connected to the moving bearing 104 are connected to each other by the arm 108. In addition, the pin 109 is installed at the position on the arm 108 closer to the connecting rod 07 side than the longitudinal center position of the arm 108 to function as a point where the arm 108 pivots, the handle 106 By moving the moving bearing 104 in perspective with respect to the fixed bearing 103 by the operation of the to adjust the distance between the rollers (101, 102).

However, there is a problem of an exchange operation in which the adjusting means attached to the left and right side walls 110 and 110 must be removed when the rollers 101 and 102 are replaced by wear of the rollers 101 and 102.

On the other hand, in recent years, the roller spacing has been controlled by a microcomputer control motor or the like instead of the handle 106 (see Japanese Patent Application No. 60-52862). But advances in technology that facilitate the exchange of rolls are stale. For example, even in the apparatus disclosed in Special Publication No. 60-52862, the exchange operation is doubled because the rollers must be replaced by separating the connecting rods connecting the two bearings as a roller spacing means or by lifting both ends of the rollers with a winch. Do.

[Object and Summary of the Invention]

An object of the present invention is to solve the above problems, and an object of the present invention is to provide a roll binding machine that can easily detach and attach a roll without separating the roll gap adjusting means.

In order to achieve the above object, in the roll mill of the present invention, a fixed bearing fixed to the frame at a position close to an opening part of a roll access notch provided at an opposite side wall, and at a position farther from the fixed bearing. A moving bearing fixed to the frame, and a high speed roller rotatably supported by the fixed bearing, and a low speed rotation rotatably supported by the moving bearing and rotating in the opposite direction to the high speed roller at a circumferential speed lower than the circumferential speed of the high speed roller. In a roll mill having at least one set of components consisting of a pair of rolls including a roll, the roll mill according to the present invention is characterized in that the roll spacing coarse adjusting means and the finely adjust the gap between the rolls. And a roller spacing microadjusting means for adjusting the first and second support portions of the support frame of the moving bearing. The first part closer to the fixed bearing than the second part can be separated and attached to the fixed bearing side, and the coarse adjusting means coarsely adjusts the gap between the rollers. And an eccentric wheel driving means connected to one end of the second portion that is pivotally supported by the side wall of the coarse adjustment eccentric wheel, and the microadjusting means is a micro-adjusting roll gap coupled to the other end of the second part. The shaft is connected to the microadjustment shaft by a spring, and is composed of a roller spacing microadjustment eccentric wheel installed on one side of the movable bearing opposite the fixed bearing, and an eccentric wheel driving means.

The fine control eccentric ring driving means is preferably composed of an arm connected to one end of the main shaft of the coarse adjustment eccentric ring and an air cylinder device connected to the other end of the arm.

In addition, the coarse adjustment eccentric wheel drive means is preferably composed of a worm gear fixed to the main shaft of the fine adjustment eccentric wheel and a worm that is operated by a motor, and is engaged with the worm gear.

In the roll mill configured as described above, when the roller is replaced, the fixed bearing is separated from the side wall, and the high speed roller supported by the fixed bearing is pulled out from the mill through the opening of the notch for roll access with the fixed bearing. The first part of the support frame for the support body of the movable bearing, located closer to the stationary bearing than the second part of the support frame, is removed from the second part, and then the low-speed roller with the support body is removed from the mill through the opening. Pull out. Then insert a new low-speed roller for exchange with the support body through the opening, attach it to the second part of the support frame for the support body of the movable bearing, and incorporate the first part of the movable bearing which was separated from the second part. . Subsequently, a new high speed roller for replacement is inserted through the opening together with the fixed bearing and fixed to the side wall. When replacing a roll, only one of the high speed roller and the low speed roller may be replaced.

As described above, in the roll mill according to the present invention, the roll gap coarse adjusting means is installed at a position farther from the opening of the roll access notch. It does not interfere. In addition, for example, a control device or the like can be arranged near the fixed bearing.

Detailed Description of the Preferred Embodiments

1 to 4 show a roll mill according to a preferred embodiment of the present invention. In the previous figure, the frame 1 constituting the roll mill has a front wall 1a and a rear wall 1b. Openings 4 are formed in each of the walls 1a and 1b, and through the openings 4, the high speed rolls 2 and the lower speeds of the rolls 2 are lower than the circumferential speeds of the rolls 2. The low speed roller 3 rotating in the reverse direction enters and exits the mill. The roll cover 5 is detachably attached to the opening 4. In FIG. 1, reference numerals 6a and 6b are side walls at the front and back of the frame 1, respectively. These side walls 6a and 6b will hereinafter be labeled with reference numeral 6. On both side walls 6 of the frame 1, the notch 7 for roll access is provided corresponding to each opening part 4. As shown in FIG. The notch 7 for roll access is made wider at the opening part 4. In addition, the notch part 7 is extended horizontally toward the center part of a roller mill to the position shown with the reference number 7a. The movable bearing 8 is arranged in the roll access notch 7 at a position near the closed end 7a of the roll access notch 7, and the fixed bearing 9 is located at a position near the opening 4. It is arrange | positioned at the notch part 7 for roll access. The low speed roll 3 and the high speed roll 2 are rotatably supported by the movable bearing 8 and the fixed bearing 9, respectively. Between the fixed bearing 9 and the moving bearing 8 is provided a cover plate 48 coupled to them.

More specifically, each stationary bearing 9 is bolted to the mounting portion on the side wall 6 of the frame 1. The support frame for the support body 8e of the movable bearing 8 is composed of a frame portion 8b and a split case 8a constituting about half of the support frame and positioned near the fixed bearing 9. The split case 8a is detachably fixed to the frame 8b of the movable bearing 8 with bolts. The support frame portion 8b of the bearing 8 is connected to the side wall 6 via a roller spacing coarse adjustment eccentric ring 10 eccentrically connected to the main shaft 11 rotatable about the central axis 11a at its lower end 8c. It is installed to enable pivoting. The eccentric wheel 10 has a roll gap coarse adjustment air cylinder having an arm 12 fixed at one end of the main shaft 11 of the eccentric wheel 10 and a telescopic rod 13a connected to the arm 10 at one end thereof. It is driven by the drive means consisting of the device 13. As described above in detail in FIGS. 2 to 4, the support frame portion 8b of the movable bearing 8 is connected to the roller gap fine adjustment eccentric wheel 14 through the disc spring 15 at its upper end 8d. This eccentric wheel 14 is connected to a roller spacing microadjustable eccentric ring driving means provided at a position on one side of the movable bearing 8 opposite to the fixed bearing 9.

More specifically, the moving bearing 8 has a groove 16 formed at its upper end 8d. The roller spacing microadjusting shaft 17 extends along this groove 16 in a substantially horizontal direction along the groove 16. Further, the fine adjustment shaft 17 is loosely inserted into the holes 18a and 19a of each of the pair of fixed or support plates 18 and 19. The pair of support plates 18 and 19 are screwed together on two screw rods 20 and 20. A plurality of disc springs 15 through which the fine adjustment shaft 17 penetrates is installed between the large coupling shaft portion 17a formed on the fine adjustment shaft 17 and the support plate 18 adjacent to the fixed bearing 9. The upper end 8d of the moving bearing 8 is inserted between the coupling shaft 17a and the support plate 19 near the center of the device so that the groove 16 and the fine adjustment shaft 17 are coupled to each other. Protrusions 21 and 21 are formed at the portion of the support plate 19 where the plate 19 comes into contact with the upper end 8d of the moving bearing 8. Grooves 22 and 22 are formed in the portion of the upper end portion 8d of the moving bearing 8 that corresponds to or abuts on the protrusions 21 and 21. Furthermore, several rings 23 are inserted on the fine adjustment shaft 17 so as to be arranged between the upper end 8d of the moving bearing 8 and the coupling shaft 17a. A protrusion 24 is formed at a portion of the upper end portion of the movable bearing 8 that comes into contact with the ring 23, and the protrusion 24 protrudes in an arc shape around the horizontality.

The following describes a roller spacing fine control eccentric ring driving means. The gear case 26 and the reversible motor 27 are fixed to the flange wall 25 which is formed almost vertically along the centerline A of the side wall 6, and the motor 27 is located above the gear case 26 ( The right part and the left part divided by the center line A are completely the same with respect to the flange wall 25, so only one is described.) In the gear case 26, a worm 28 fixed to the shaft of the motor 27 and a worm gear 29 which is separated from the worm 28 are arranged. The worm gear 29 is fixed to the main shaft 14a of the microadjustable eccentric wheel 14 installed in the gear case 26, and the microjoin shaft 17 is mounted on the eccentric wheel rod 30 coupled with the eccentric wheel. It is fixed. The eccentric wheel rod 30 having a concave surface complementary to the circumferential surface shape of the eccentric wheel 14 is pressed against the circumferential surface of the eccentric wheel 14 by the stretching force of the disc spring 15.

The cover 34 covers the high speed roller 2 and the low speed roller 3 to form the grinding chamber 35. The discharge hopper 32 is formed in the lower part of the grinding chamber 35 and the lower end of the conveying pipe 33 is opened into the discharge hopper 32. The raw material supply means 50 is installed above the grinding chamber 35. That is, the raw material supply cylinder 36 formed of the transparent wall is installed in the center of the upper wall 1c of the frame 1. The inner space of the raw material supply container 36 is divided into two raw material supply chambers 38 and 38 by the separator 37 so as to supply the raw material to the two pairs of rolls 2,3: 2,3. The upper limit level sensor 39 and the lower limit level sensor 40 are installed in the raw material supply chambers 38 and 38, respectively, and the sensors 39 and 40 are connected to the control device 52. A supply hopper 41 is formed under each supply chamber 38, and two supply rollers 42 and 43 driven by a motor (not shown) are installed in parallel with each other at the lower end of the supply hopper 41. In the vicinity of the supply roll 42, the supply gate plate 44 is installed to pivot about the pivot pin 44a. The supply gate plate 44 pivots about the pivot pin 44a by the supply gate opening / closing cylinder 45 and the supply gate adjusting mechanism 46 to move from the vicinity of the supply roller 42 to the supply roller 42. And open and close the flow path formed between the gate plate 44 and the opening degree of the flow path. The supply gate plate 44 may be installed in relation to the supply roll 43 instead of installing in relation to the supply roll 42. The guide chute 47 is installed to extend directly in the vertical direction to extend directly to the supply rollers 42 and 43. The lower end of the guide chute 47 is opened to the grinding chamber 35 at a position above the gap between the high speed roll 2 and the low speed roll 3.

The specific operation of the embodiment of the roll mill 60 having the above structure will be described. When the main motor (not shown) starts driving and rotates the high speed roll 2 and the low speed roll 3, the control device 52 outputs an electric signal to load the roll gap coarse adjustment cylinder device 13. 13a is extended and thereby the arm 12 and the main shaft 11 are pivoted about the central axis 11a of the main shaft 11 until the state shown by the dashed-dotted line in FIG. At this time, by the eccentric rotation of the roller spacing adjustment eccentric wheel 10 which is eccentric with respect to the main shaft 11, the moving bearing 8 moves largely in the direction of the arrow B, thereby approaching the fixed bearing 9. , 3) Perform the first adjustment or coarse adjustment for the gap between them. The moving bearing 8 refers to the point consisting of the protrusion 24 of the upper end 8d of the moving bearing 8 and the recess 22 and the protrusion 21 of the support plate 19 during the movement in the direction of the arrow B. To pivot. When the coarse adjustment is completed, the motor 27 is then operated to rotate the fine control eccentric wheel 14 which is eccentric with respect to the main shaft 14a about the centerline 14b of the main shaft 14a. Along with the rotation of the eccentric ring 14, the shaft portion 17a having a large diameter of the fine adjustment shaft 17 moves the support plate 18 in the direction of arrow C by the disc spring 15. As shown in FIG. The support plate 19 bound to the support plate 18 through the rod 20 by the movement of the support plate 18 in the arrow C direction is also supported by the support plate 18 through the rod 20 by the movement in the arrow C direction. The upper end 8d is pushed in the direction of the arrow C by the projection 21 of the support plate 19 bound to the cross-section. As a result, the low speed roller 3 supported by the moving bearing 8 pivots in a direction approaching the high speed roller 2 to adjust the distance between the rolls 2 and 3 to a predetermined size.

After performing the secondary fine adjustment as described above, the raw materials to be crushed such as wheat and rice are supplied into the raw material supply chamber 38 to the height regulated by the upper limit level sensor 39. The upper limit level sensor 39 then detects " raw material " and outputs a detection signal. When the control device 52 receives the detection signal from the upper limit level sensor 39, the supply gate opening and closing cylinder 45 is driven under the control of the control device 52 to open the supply gate plate 44 to open the material passage. Move to position On the other hand, under the control of the control device 52, the two supply rollers 42 and 43 are rotated by the force in the direction of the arrow D in which the raw material is conveyed toward the guide chute 47. The raw material is supplied to the guide chute 47 at an appropriate speed in accordance with the rotational speed of the supply rolls 42 and 43 in the direction of the arrow while uniformly spreading in the direction of the axes 42 and 43. The raw material flowing out of the guide chute 47 passes through the gap between the high speed roller 2 and the low speed roller 3 to be crushed and falls into the discharge hopper 32. The pulverized raw material in the discharge hopper 32 is carried by air to the next process by the air flow flowing through the conveying pipe 33.

When the freight in the raw material supply chamber 38 decreases below the height regulated by the lower limit level sensor 40, the lower limit level sensor 40 detects "raw material". When the control device 52 receives the detection signal from the lower limit level sensor 40, the supply gate plate 44 moves to a position to close the raw material passage, and the rotation of the supply rolls 42 and 43 is controlled by the control device 52. Stop under the control of). In addition, when the motor 27 is reversed under the control of the control device 52, the coupling shaft portion 17a of the fine adjustment shaft 17 moves the upper end portion 8d of the moving bearing 8 in the direction of arrow E to reduce the roller clearance. Wider The rod 13a of the coarse adjustment cylinder device 13 is withdrawn to pivot the connecting end of the arm 12 downward, whereby the lower end 8c of the moving bearing 8 moves in the direction of arrow F. Enlarge the interval between (2, 3). In this state, the main motor (not shown) stops when the operator of the roll mill turns off the power.

The following describes the roll change operation. When the rolls 2 and 3 are replaced, the cover (not shown) installed outside each side wall 6 of the frame 1 and covering the control device is removed (the state on the left side of the center line in FIG. 1), and the roll cover The cover plate 48 forming part of the side wall 6 and 5 is removed to expose the roll access notch 7. First, the fixed bearing 9 is detached from the mounting portion 54 of the side wall 6, and both ends of the high speed roller 2 are supported by the winch or the like, and the high speed roller 2 is fixed together with the fixed bearing 9. ) Is pulled out of the mill through the opening (4). Then, the support body 8e attached to the low-speed roller 3 while separating the support frame for the support body 8e of each moving bearing 8 into two parts 8a and 8d and supporting it with a winch or the like as described above. ) And the low speed roller (3) is pulled out of the mill through the opening (4). When installing the new rolls 2 and 3 for replacement, the low speed roller 3 for exchange, to which the support body 8e is attached, is attached to the support frame portion 8b of the movable bearing 8, and then each other. The support frames 8a, 8b of each of the moving bearings 8 being separated are combined in the reverse of the above-described removal procedure.

5 shows another embodiment in which a roll gap fine adjustment means of a simpler structure is used. In FIG. 5, the microadjusting shaft 17 is coupled to the groove 16 of the upper end 8d of the moving bearing 8, and the upper end 8d is a large diameter coupling shaft portion 17b and a distal disc. 15) is placed between. The projections 56 of the plate 17b or the large diameter coupling shaft portion 17b fixed to the fine adjustment shaft 17 are formed on one of the end faces of the upper end 8d on the side facing the fixed bearing 9. It is coupled with the groove. The other projection 58 formed on the other end surface of the upper end 8d opposite the fixed bearing 9 is pressed by the one end of the disc spring 15 in the direction of arrow C through the ring 23 and the disc spring 15 The other end of) is stopped by the nut 50. In this embodiment, the moving bearing 8 moves in the direction of arrow C so that the disc spring 15 is directly involved in such movement, both when opening and closing the gap between the rollers 2, 3. In addition, in this embodiment, the space near the fixed bearing 9 can be opened much wider than in the case of the above-described embodiment, so that the entrance and exit of the rolls 2 and 3 becomes easier.

Claims (4)

A fixed bearing fixed to the frame at a position close to the opening of the notch for roll entry and exit formed on each side wall. A moving bearing fixed to the frame at a position farther from the opening than the fixed bearing. And a pair of high speed rollers rotatably supported by the fixed bearings and a low speed furnace rotatably supported by the movable bearings to rotate in a reverse direction of the high speed rollers at a circumferential speed slower than the circumferential speed of the high speed rollers. A roll mill having at least one set of components consisting of a roll, the roll mill comprising: a roll spacing coarse adjusting means for coarsely adjusting the spacing between the rolls, and a micro-adjusting roll spacing means for fine-tuning; The support frame for the support body is separable into the first part and the second part, so that the first part closer to the fixed bearing than the second part can be separated and attached to and detached from one side of the fixed bearing. The means is connected to an eccentric wheel for coordinating the spacing between the rolls and to one end of the second part pivotally supported by the side wall. Is composed of an eccentric wheel drive means, the fine adjustment means is a roller spacing microadjustment shaft coupled with the other end of the second portion, the roller is connected to the microadjustment shaft by a spring and installed on one side of the movable bearing opposite the fixed bearing A roller mill consisting of a spaced fine eccentric wheel and a finely controlled eccentric wheel driving means. The roll mill according to claim 1, wherein the coarse adjustment eccentric wheel driving means comprises an arm connected at one end thereof to a main shaft of the coarse adjustment eccentric wheel and an air cylinder device connected to the other end of the arm. 2. The roll mill according to claim 1, wherein the fine regulating eccentric wheel driving means comprises a worm gear fixed to a main shaft of the fine regulating eccentric wheel, and a worm which is separated from the worm gear and operated by a motor. 3. The roll mill according to claim 2, wherein the fine regulating eccentric wheel driving means comprises a worm gear fixed to the main shaft of the fine regulating eccentric wheel and a worm which is physically separated from the worm gear and operated by a motor.