Finishing equipment for conical grinding tool of papermaking pulping machine

Abstract

The utility model belongs to the technical field of grinding tool finishing, and particularly relates to finishing equipment for a conical grinding tool of a papermaking pulping machine, which comprises a base, a rotating seat and a driving motor are mounted on the base, a rotating rod rotatably mounted on the rotating seat is in transmission connection with the driving motor, and a lower supporting piece and an upper positioning piece are mounted on a stand column mounted at the top end of the rotating rod. A conical grinding tool is placed on the lower supporting piece, the lower supporting piece comprises a fixing plate, a rotating ring is rotationally clamped to the fixing plate, the circumferential side of the rotating ring is rotationally connected with a plurality of connecting arms and rotationally connected with supporting arms, and the supporting arms are rotationally connected with the fixing plate. Conical grinding tools of different specifications can be supported by adjusting and locking the height of the lower supporting piece on the stand column and adjusting the unfolding size of the supporting arm, and the conical grinding tools of different specifications are positioned and locked through the upper positioning piece. The stand column drives the conical grinding tool to rotate automatically and cooperates with a grinding machine to achieve efficient finishing.

Description

Technical Field

[0001] This utility model belongs to the field of abrasive dressing technology, specifically relating to a dressing device for a conical abrasive of a paper mill. Background Technology

[0002] The paper refining mill is a core piece of equipment in the pulping and papermaking process. Its conical die shears and grinds the pulp fibers through high-speed rotation, directly affecting the uniformity and strength of the paper. After long-term use, the teeth of the conical die wear down, leading to a decrease in grinding efficiency, requiring periodic trimming to restore its surface precision. However, traditional trimming equipment suffers from the following technical bottlenecks: the conical die varies significantly in size (length typically 0.5–3m, large end diameter 0.3–1.2m), and traditional support devices often use fixed height or manual bolt adjustment, requiring repeated disassembly and replacement of parts, which is time-consuming and difficult to precisely match the die size. The large end of the conical die rotor has a conical structure, and traditional support components (such as V-blocks or fixed brackets) cannot adapt to the different diameters of the die bottom, easily causing the die to wobble during trimming and affecting trimming accuracy. In addition, the inner wall of the small end of the die lacks an effective clamping device, which can easily cause radial displacement due to uneven force during trimming, exacerbating tooth wear. Utility Model Content

[0003] To address the above problems, the purpose of this utility model is to provide a dressing device for conical grinding tools in paper mills, which solves the problems of low adjustment efficiency, unstable support, and high operating intensity of traditional conical grinding tool dressing devices.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a dressing device for a conical grinding die of a paper mill, comprising a base, a rotating seat and a drive motor mounted on the base, a rotating rod rotatably mounted on the rotating seat, the rotating rod being driven by the drive motor, a column mounted at the top of the rotating rod, a lower support member sleeved on the column, an upper positioning member mounted at the top of the column, and a conical grinding die placed on the lower support member. The lower support member includes a fixing plate, on which a rotating ring is rotatably clamped, and the circumference of the rotating ring is rotated by a pin. One end of a plurality of connecting arms is connected, and the other end of the connecting arm is rotatably connected to one side of a support arm via a pin. One end of the support arm is rotatably connected to a fixed plate via a pin. The upper positioning component includes a housing, a rotating shaft is rotatably mounted on the inner side of the housing, and a rotating shaft and a rotating disk are mounted on the outer side of the rotating shaft. The rotating shaft is meshed with a worm gear. An eccentric groove is provided on the rotating disk, and a connecting pin is slidably mounted in the eccentric groove. The connecting pin is mounted on one end of a support rod, and the other end of the support rod slidably passes through a limiting seat. The limiting seat is fixed on the housing.

[0005] The beneficial effects of this utility model are as follows: the height of the lower support member on the column can be adjusted and the unfolding size of the support arm can be adjusted to accommodate the support of conical grinding tools of different specifications; the upper positioning member can be used to position and lock the conical grinding tools of different specifications; the column drives the conical grinding tool to rotate automatically, and the grinding wheel can be used to achieve efficient dressing.

[0006] In order to flexibly adjust the height of the lower support so that the conical mold supported by the lower support is locked by the upper positioning component;

[0007] As a further improvement to the above technical solution: a sleeve is installed on the fixing plate, the sleeve is slidably fitted on the outside of the column, a plurality of adjustment holes are equally spaced on the column, and a through hole with the same diameter as the adjustment hole is opened through the sleeve.

[0008] The beneficial effect of this improvement is that by sliding the sleeve on the column and inserting the bolt into the adjustment hole corresponding to the through hole on the sleeve, the height of the lower support can be quickly adjusted and locked, so that the tapered molds of different specifications supported by the lower support are locked by the upper positioning part.

[0009] To provide stable support for the conical abrasive;

[0010] As a further improvement to the above technical solution: multiple connecting arms and support arms are arranged at equal intervals around the axis of the rotating ring.

[0011] The beneficial effect of this improvement is that multiple support arms can be folded or unfolded synchronously under the drive of the connecting arm, thereby stably supporting the bottom of the conical mold.

[0012] In order to drive the rotating rod to rotate stably by a drive motor;

[0013] As a further improvement to the above technical solution: the drive motor is connected to the rotating rod through a belt transmission mechanism, and a driving pulley is installed on the output shaft of the drive motor, while a driven pulley is installed on the rotating rod.

[0014] The beneficial effect of this improvement is that the belt drive mechanism can stably transmit the power of the drive motor to the rotating rod.

[0015] In order to stabilize the inner wall of the conical grinding tool by using the upper positioning component, so as to drive the conical grinding tool to rotate stably;

[0016] As a further improvement to the above technical solution: the outer shell is installed on the top of the column, the worm gear is rotatably installed on the outer shell, and one end of the worm gear passes through the outer shell and is fitted with a handle.

[0017] The beneficial effects of this improvement are: the self-locking property of the worm gear mechanism can effectively lock the position of the support rod, so that the extended support rod can effectively press against the inner wall of the conical mold.

[0018] In order to achieve centering and clamping of the conical grinding tool so as to drive the conical grinding tool to rotate stably about the axis of the rotating rod;

[0019] As a further improvement to the above technical solution: the axis of the support rod is located in the radial direction of the rotation shaft, and the axis of the rotation shaft is collinear with the axis of the rotation rod.

[0020] The beneficial effect of this improvement is that when the rotating disk rotates, multiple support rods extend and retract synchronously along the radial direction of the rotating rod, thereby achieving self-centering locking of the conical mold.

[0021] To effectively avoid structural interference between the support rod and the rotating disk;

[0022] As a further improvement to the above technical solution: the end of the support rod facing the rotating disk is formed with a groove structure that is slidably connected to the rotating disk.

[0023] The beneficial effect of this improvement is that when the support rod extends or retracts, the groove on the support rod effectively avoids structural interference between the support rod and the rotating disk.

[0024] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the working process of this utility model;

[0027] Figure 3 This is a schematic diagram of the lower support component in this utility model;

[0028] Figure 4 This is a schematic diagram of the internal structure of the upper positioning component in this utility model;

[0029] In the diagram: 1. Base; 2. Rotating seat; 3. Drive motor; 4. Rotating rod; 5. Column; 51. Adjustment hole; 6. Lower support; 61. Fixing plate; 62. Rotating ring; 63. Sleeve; 64. Connecting arm; 65. Support arm; 7. Upper positioning component; 71. Outer shell; 72. Limiting seat; 73. Support rod; 74. Connecting pin; 75. Eccentric groove; 76. Rotating disk; 77. Rotating shaft; 78. Worm gear; 79. Worm; 8. Conical mold. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0031] Example 1:

[0032] like Figure 1As shown in Figure 4: A dressing device for a conical grinding die of a paper mill includes a base 1, a rotating seat 2 and a drive motor 3 mounted on the base 1, a rotating rod 4 rotatably mounted on the rotating seat 2, the rotating rod 4 being connected to the drive motor 3, a column 5 mounted on the top of the rotating rod 4, a lower support 6 sleeved on the column 5, an upper positioning part 7 mounted on the top of the column 5, and a conical grinding die 8 placed on the lower support 6. The lower support 6 includes a fixing plate 61, a rotating ring 62 rotatably clamped on the fixing plate 61, and a plurality of connecting arms 64 rotatably connected to one end of the circumference of the rotating ring 62 via pins. The other end of the connecting arms 64 rotatably connects to one side of a support arm 65 via pins. One end of the support arm 65 is connected to a support arm 65 via a pin. The shaft is rotatably connected to the fixing plate 61. The upper positioning component 7 includes a housing 71. A rotating shaft 77 is rotatably installed on the inner side of the housing 71. A rotating shaft 77 and a rotating disk 76 are installed on the outer side of the rotating shaft 77. The rotating shaft 77 is meshed with a worm gear 79. An eccentric groove 75 is provided on the rotating disk 76. A connecting pin 74 is slidably installed in the eccentric groove 75. The connecting pin 74 is installed at one end of the support rod 73. The other end of the support rod 73 slides through the limiting seat 72. The limiting seat 72 is fixed on the housing 71. The height of the lower support component 6 on the column 5 and the unfolding size of the support arm 65 can be adjusted to accommodate the support of conical grinding molds 8 of different specifications. The upper positioning component 7 is used to position and lock the conical grinding molds 8 of different specifications.The column 5 drives the conical grinding wheel 8 to rotate automatically, achieving efficient dressing in conjunction with the grinding wheel machine. A sleeve 63 is installed on the fixed plate 61, and the sleeve 63 is slidably fitted on the outside of the column 5. The column 5 has multiple adjustment holes 51 at equal intervals, and the sleeve 63 has a through hole with the same diameter as the adjustment hole 51. By sliding the position of the sleeve 63 on the column 5 and inserting bolts into the adjustment holes 51 corresponding to the through holes on the sleeve 63, the height of the lower support 6 can be quickly adjusted and locked, so that the conical grinding wheels 8 of different specifications supported by the lower support 6 are locked by the upper positioning member 7. Multiple connecting arms 64 and support arms 65 are arranged at equal intervals around the axis of the rotating ring 62. Multiple support arms 65 can be folded or unfolded synchronously under the drive of the connecting arms 64, thereby stably supporting the bottom of the conical grinding wheel 8. The drive motor 3 is connected to the rotating rod 4 through a belt transmission mechanism, and a drive pulley is installed on the output shaft of the drive motor 3. A driven pulley is installed on the rotating rod 4. The belt drive mechanism allows the power of the drive motor 3 to be stably transmitted to the rotating rod 4. The outer shell 71 is installed on the top of the column 5. The worm gear 79 is rotatably installed on the outer shell 71, and one end of the worm gear 79 passes through the outer shell 71 and is fitted with a handle. The self-locking property of the worm gear mechanism can effectively lock the position of the support rod 73, so that the extended support rod 73 effectively presses against the inner wall of the conical mold 8. The axis of the support rod 73 is located in the radial direction of the rotating shaft 77. The axis of the rotating shaft 77 is collinear with the axis of the rotating rod 4. When the rotating disk 76 rotates, multiple support rods 73 extend and retract synchronously in the radial direction of the rotating rod 4, thereby achieving self-centering locking of the conical mold 8. The end of the support rod 73 facing the rotating disk 76 is formed with a groove structure that slides to connect with the rotating disk 76. When the support rod 73 extends and retracts, the groove on the support rod 73 effectively avoids structural interference between the support rod 73 and the rotating disk 76.

[0033] The working principle of this technical solution is as follows: Adjust the position of the lower support 6 on the column 5 according to the length of the conical grinding tool to be repaired, so that the sleeve 63 slides on the column 5, and aligns the through hole on the sleeve 63 with the appropriate adjustment hole 51. Then, use bolts inserted into the holes to lock the height of the lower support 6. Subsequently, pre-adjust the size of the lower support 6 according to the large end diameter of the rotor of the conical grinding tool to be repaired. Hold the support arm 65 and rotate one end of the support arm 65 outwards. When the support arm 65 rotates under force, it drives one end of the connecting arm 64 to move via a pin. The other end of the connecting arm 64 drives the rotating ring 62 to rotate via a pin. When the rotating ring 62 rotates, it drives the other connecting arms 64 to rotate via pins, thereby causing the other connecting arms 64 to drive the support arm 65 to rotate, thus allowing multiple support arms 65 to simultaneously unfold to the appropriate position. The dimensions are such that it is supported at the bottom of the conical grinding wheel; the large end of the rotor of the conical grinding wheel is placed downward on the support arm 65, and then the worm 79 is rotated, so that the worm 79 meshes with the drive worm wheel 78. The worm wheel 78 drives the rotating disk 76 to rotate. When the rotating disk 76 rotates, it pushes the connecting pin 74 through the eccentric groove 75, so that the connecting pin 74 drives the support rod 73 to slide in the limit seat 72, and then the support rod 73 moves outward along the radial direction of the rotating disk 76, so as to achieve tight support for the inner straight wall of the small end of the rotor of the conical grinding wheel; when performing dressing work, the operator holds the grinding wheel and puts the grinding wheel against the surface of the conical grinding wheel, starts the drive motor 3, so that the drive motor 3 drives the column 5 to rotate through the belt transmission mechanism, and then drives the conical grinding wheel to rotate, so that the operator can perform efficient dressing of the surface of the conical grinding wheel without repeated movement.

[0034] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A dressing device for a conical grinding die of a paper mill, characterized in that: The system includes a base (1), on which a rotating seat (2) and a drive motor (3) are mounted. A rotating rod (4) is rotatably mounted on the rotating seat (2), and the rotating rod (4) is connected to the drive motor (3). A column (5) is mounted on the top of the rotating rod (4), and a lower support (6) is sleeved on the column (5). An upper positioning part (7) is mounted on the top of the column (5). A conical mold (8) is placed on the lower support (6). The lower support (6) includes a fixing plate (61), on which a rotating ring (62) is rotatably clamped. The circumference of the rotating ring (62) is rotatably connected to one end of a plurality of connecting arms (64) via pins. The other end of the connecting arms (64) is rotatably connected to the other end of the connecting arms (64) via pins. One side of the movable connection support arm (65) is connected to a fixed plate (61) by a pin. The upper positioning member (7) includes a housing (71). A rotating shaft (77) is rotatably installed on the inner side of the housing (71). A rotating shaft (77) and a rotating disk (76) are installed on the outer side of the rotating shaft (77). The rotating shaft (77) meshes with a worm gear (79). An eccentric groove (75) is provided on the rotating disk (76). A connecting pin (74) is slidably installed in the eccentric groove (75). The connecting pin (74) is installed on one end of the support rod (73). The other end of the support rod (73) slides through the limiting seat (72). The limiting seat (72) is fixed on the housing (71).

2. The dressing device for the conical grinding wheel of a paper mill according to claim 1, characterized in that: A sleeve (63) is installed on the fixing plate (61). The sleeve (63) is slidably fitted on the outside of the column (5). Multiple adjustment holes (51) are equally spaced on the column (5). A through hole with the same diameter as the adjustment hole (51) is opened through the sleeve (63).

3. The dressing equipment for the conical grinding wheel of a paper mill according to claim 1, characterized in that: The multiple connecting arms (64) and support arms (65) are equidistantly spaced around the axis of the rotating ring (62).

4. The dressing device for a conical grinding die of a paper mill according to claim 1, characterized in that: The drive motor (3) is connected to the rotating rod (4) through a belt drive mechanism, and a drive pulley is installed on the output shaft of the drive motor (3), while a driven pulley is installed on the rotating rod (4).

5. The dressing device for the conical grinding wheel of a paper mill according to claim 1, characterized in that: The outer shell (71) is installed on the top of the column (5), and the worm (79) is rotatably installed on the outer shell (71), with one end of the worm (79) penetrating the outer shell (71) and having a handle installed thereon.

6. The dressing device for a conical grinding die of a paper mill according to claim 1, characterized in that: The axis of the support rod (73) is located in the radial direction of the rotating shaft (77), and the axis of the rotating shaft (77) is collinear with the axis of the rotating rod (4).

7. The dressing device for a conical grinding die of a paper mill according to claim 1, characterized in that: The end of the support rod (73) facing the rotating disk (76) is formed with a groove structure that is slidably connected to the rotating disk (76).

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