Centrifugal casting mold of papermaking drying cylinder

Abstract

The utility model discloses a centrifugal casting mold of a papermaking drying cylinder. The centrifugal casting mold comprises a supporting frame and a rotary centrifugal frame arranged above the supporting frame. According to the centrifugal casting mold of the papermaking drying cylinder, the rotating assembly, the driving assembly and the extrusion assembly are matched with one another, the mold body is subjected to the centrifugal force effect, a finished papermaking drying cylinder product is obtained through the procedures of cooling, demolding and the like, in the centrifugal process, the mold body synchronously reciprocates up and down through transmission, and therefore the centrifugal casting effect is achieved. Through rotating centrifugal motion and up-and-down reciprocating motion of the mold body, a mold cavity can be more smoothly filled with high-temperature molten iron under the combined action of centrifugal force and up-and-down reciprocating motion, and especially for castings which are complex in shape and have thin-wall structures or deep-cavity structures, the high-temperature molten iron can be helped to overcome flowing resistance through up-and-down reciprocating motion; all parts of the mold can be better filled, the defects of insufficient pouring, cold shut and the like are reduced, and the forming quality of a casting is improved.

Description

Technical Field

[0001] This utility model relates to the field of papermaking technology, specifically to a centrifugal casting mold for a papermaking drying cylinder. Background Technology

[0002] Centrifugal casting mold for paper drying cylinders is a special mold used to manufacture paper drying cylinders. During the operation, the preheated centrifugal casting mold is installed on a centrifuge. The centrifuge drives the mold to rotate, and then high-temperature molten iron is poured into the mold. Under the action of centrifugal force, the molten iron is evenly distributed on the inner wall of the mold, first forming the sleeve part of the paper drying cylinder. After this part of the molten iron cools down, more molten iron is poured in to form the boss part of the drying cylinder. Finally, after cooling, demolding and other processes, the finished paper drying cylinder is obtained.

[0003] During the operation of centrifugal casting molds for paper drying cylinders, for castings with complex shapes, thin-walled structures, or deep cavity structures, centrifugal force alone cannot fill all parts of the mold with high-temperature molten iron, increasing the probability of defects such as incomplete filling and cold shuts.

[0004] Therefore, there is an urgent need for a centrifugal casting mold for paper drying cylinders to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a centrifugal casting mold for a paper drying cylinder to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal casting mold for a paper drying cylinder, comprising a support frame and a rotating centrifugal frame disposed above the support frame, wherein a mold body is fixed on the rotating centrifugal frame, and further comprising:

[0007] A rotating assembly for rotating a rotating centrifuge frame is mounted on a support frame. The rotating assembly includes a bearing seat fixed to the upper end of the support frame, a rotating shaft rotatably connected to the bearing seat, one end of the rotating shaft being fixed to the rotating centrifuge frame, and a transmission assembly for driving the rotating shaft on the support frame.

[0008] The transmission assembly includes a splined shaft fixed to the lower end of the rotating shaft, a splined sleeve slidably connected to the outer side of the splined shaft, an installation assembly for installing and connecting the splined sleeve between the splined sleeve and the support frame, a drive assembly for driving the splined sleeve on the support frame, and a pressing assembly for pressing the splined shaft on the support frame.

[0009] The extrusion assembly includes a fixed base fixed to the lower end of the support frame. A first circular plate and a second circular plate are fixed to the lower end of the spline shaft and the upper end of the fixed base, respectively. The first circular plate and the second circular plate are concentrically arranged. Multiple sets of first and second hemispherical protrusions for mutual abutment and transmission are fixed to the opposite side of the first and second circular plates. A spring is sleeved on the outer side of the rotating shaft. The two ends of the spring are connected to the bearing seat and the rotating centrifugal frame, respectively.

[0010] The drive assembly includes a connecting seat mounted on a support frame, a drive motor fixed on the connecting seat, and a transmission assembly for auxiliary transmission provided between the output end of the drive motor and the spline sleeve.

[0011] The transmission assembly includes pulleys fixed to the output end of the drive motor and the outside of the spline sleeve, respectively, and the two sets of pulleys are connected by a belt for transmission.

[0012] The mounting assembly includes a mounting sleeve that is rotatably connected to the outside of the spline sleeve, and the mounting sleeve is fixed to the support frame by multiple sets of L-shaped brackets.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model discloses a centrifugal casting mold for a paper drying cylinder. Through the cooperation of a rotating component, a driving component, and an extrusion component, the mold body is subjected to centrifugal force. After cooling and demolding processes, the finished paper drying cylinder is obtained. During the centrifugal process, the mold body moves up and down in a synchronous reciprocating motion through transmission. The rotational centrifugal motion and the up-and-down reciprocating motion of the mold body enable the high-temperature molten iron to fill the mold cavity more smoothly under the combined action of centrifugal force and up-and-down reciprocating motion. Especially for castings with complex shapes, thin-walled structures, or deep cavity structures, the up-and-down reciprocating motion helps the high-temperature molten iron overcome flow resistance and better fill all parts of the mold, reducing defects such as incomplete filling and cold shuts, and improving the forming quality of the casting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the rotating component and transmission component of this utility model;

[0017] Figure 3 This is a schematic diagram of the installation component structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the extrusion assembly structure of this utility model.

[0019] In the diagram: 101, support frame; 102, rotating centrifuge frame; 103, mold body; 201, bearing seat; 202, rotating shaft; 301, splined shaft; 302, splined sleeve; 401, connecting seat; 402, drive motor; 501, pulley; 502, belt; 601, mounting sleeve; 602, L-shaped frame; 701, fixed seat; 702, first circular plate; 703, second circular plate; 704, first hemispherical protrusion; 705, second hemispherical protrusion; 706, spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 The present invention provides a centrifugal casting mold for a paper drying cylinder, comprising a support frame 101 and a rotating centrifugal frame 102 disposed above the support frame 101, wherein a mold body 103 is fixed on the rotating centrifugal frame 102, and further comprising:

[0022] A rotating assembly for rotating the rotating centrifuge frame 102 is provided on the support frame 101. The rotating assembly includes a bearing seat 201 fixed to the upper end of the support frame 101, a rotating shaft 202 rotatably connected to the bearing seat 201, one end of the rotating shaft 202 being fixed to the rotating centrifuge frame 102, and a transmission assembly for driving the rotating shaft 202 is provided on the support frame 101.

[0023] The transmission assembly includes a splined shaft 301 fixed to the lower end of the rotating shaft 202, a splined sleeve 302 slidably connected to the outer side of the splined shaft 301, an installation assembly for mounting the splined sleeve 302 between the splined sleeve 302 and the support frame 101, a drive assembly for driving the splined sleeve 302 on the support frame 101, and a pressing assembly for pressing the splined shaft 301 on the support frame 101.

[0024] It should be noted that: through the cooperation of the rotating component, the driving component, and the extrusion component, the mold body 103 is subjected to centrifugal force. After cooling, demolding and other processes, the finished paper drying cylinder is obtained. During the centrifugal process, the mold body 103 is synchronously reciprocated up and down through transmission. Through the rotational centrifugal motion and the reciprocating up and down motion of the mold body 103, the high-temperature molten iron can be filled into the mold cavity more smoothly under the combined action of centrifugal force and reciprocating up and down motion. Especially for castings with complex shapes, thin-walled structures or deep cavity structures, the reciprocating up and down motion can help the high-temperature molten iron overcome flow resistance, better fill all parts of the mold, reduce the occurrence of defects such as incomplete filling and cold shut, and improve the forming quality of the casting.

[0025] The extrusion assembly includes a fixed base 701 fixed to the lower end of the support frame 101. A first circular plate 702 and a second circular plate 703 are fixed to the lower end of the spline shaft 301 and the upper end of the fixed base 701, respectively. The first circular plate 702 and the second circular plate 703 are concentrically arranged. Multiple sets of first hemispherical protrusions 704 and second hemispherical protrusions 705 for mutual abutment transmission are fixed on opposite sides of the first circular plate 702 and the second circular plate 703. A spring 706 is sleeved on the outer side of the rotating shaft 202. The two ends of the spring 706 are connected to the bearing seat 201 and the rotating centrifugal frame 102, respectively.

[0026] It should be noted here that: the spline sleeve 302 is driven to rotate through the rotating assembly and the transmission assembly. During the rotation of the spline sleeve 302, the spline shaft 301 is driven to rotate through the connection between the spline sleeve 302 and the spline shaft 301. As the spline shaft 301 rotates, the first circular plate 702 rotates. During the rotation of the first circular plate 702, each group of first hemispherical protrusions 704 abuts against each group of second hemispherical protrusions 705 in sequence. When 704 abuts against the second hemispherical protrusion 705, it pushes the first circular plate 702 and spline shaft 301 to move upward under force, and causes the spring 706 to deform under force and generate elastic force. When the first hemispherical protrusion 704 does not abut against the second hemispherical protrusion 705, the spline shaft 301 is reset by the elastic force of the spring 706. Therefore, while the spline shaft 301 rotates, through transmission, the spline shaft 301, the rotating centrifugal frame 102 and the mold body 103 move up and down in sync.

[0027] The drive assembly includes a connecting seat 401 mounted on the support frame 101, a drive motor 402 fixed on the connecting seat 401, and a transmission assembly for auxiliary transmission between the output end of the drive motor 402 and the spline sleeve 302; the transmission assembly includes pulleys 501 respectively fixed to the output end of the drive motor 402 and the outside of the spline sleeve 302, and the two sets of pulleys 501 are connected and transmitted through a belt 502.

[0028] It should be noted here that: when the drive motor 402 on the connecting seat 401 is started, the spline sleeve 302 is driven to rotate through the driving action of the drive motor 402 and the transmission action of the belt 502 and the two sets of pulleys 501.

[0029] The mounting assembly includes a mounting sleeve 601 that is rotatably connected to the outside of the spline sleeve 302. The mounting sleeve 601 and the support frame 101 are fixed together by multiple sets of L-shaped brackets 602.

[0030] It should be noted here that the installation sleeve 601 and support bracket 101 facilitate the installation and connection of the spline sleeve 302.

[0031] Working principle: During the use of the centrifugal casting mold of the paper drying cylinder, high-temperature molten iron is injected into the mold body 103. After the injection is completed, the drive motor 402 on the connecting seat 401 is started. Through the driving action of the drive motor 402 and the transmission action of the belt 502 and the two sets of pulleys 501, the spline sleeve 302 is driven to rotate.

[0032] During the rotation of the spline sleeve 302, the spline sleeve 302 and the spline shaft 301 are connected and transmitted to drive the rotating shaft 202 and the rotating centrifugal frame 102 at one end of the rotating shaft 202 to rotate. During the rotation of the rotating centrifugal frame 102, the mold body 103 is subjected to centrifugal force, and the high-temperature molten iron is distributed on the inner wall of the mold body 103. Finally, after cooling, demolding and other processes, the finished paper drying cylinder is obtained.

[0033] During the rotation of the centrifuge frame 102 and the mold body 103, the rotation of the spline shaft 301 drives the first circular plate 702 to rotate. During the rotation of the first circular plate 702, the first hemispherical protrusions 704 sequentially abut against the second hemispherical protrusions 705. When the first hemispherical protrusions 704 abut against the second hemispherical protrusions 705, they push the first circular plate 702 and the spline shaft 301 upwards, causing the spring 706 to deform and generate elastic force. When the first hemispherical protrusions 704 are not abutting against the second hemispherical protrusions 705, the elastic force of the spring 706 causes the spline shaft 301 to... 01 is reset. Therefore, while the spline shaft 301 rotates, the spline shaft 301, the rotating centrifugal frame 102 and the mold body 103 move up and down in sync through transmission. Through the rotational centrifugal motion and up and down reciprocating motion of the mold body 103, the high-temperature molten iron can fill the mold cavity more smoothly under the combined action of centrifugal force and up and down reciprocating motion. Especially for castings with complex shapes, thin-walled structures or deep cavity structures, the up and down reciprocating motion can help the high-temperature molten iron overcome flow resistance, better fill all parts of the mold, reduce the occurrence of defects such as incomplete pouring and cold shut, and improve the forming quality of the casting.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A centrifugal casting mold for a paper drying cylinder, comprising: A support frame (101) and a rotating centrifuge frame (102) disposed above the support frame (101), wherein a mold body (103) is fixed on the rotating centrifuge frame (102); Its characteristic is that it further includes: A rotating assembly for rotating a rotating centrifuge frame (102) is provided on a support frame (101). The rotating assembly includes a bearing seat (201) fixed to the upper end of the support frame (101). A rotating shaft (202) is rotatably connected to the bearing seat (201). One end of the rotating shaft (202) is fixed to the rotating centrifuge frame (102). A transmission assembly for driving the rotating shaft (202) is provided on the support frame (101). The transmission assembly includes a spline shaft (301) fixed to the lower end of the rotating shaft (202), a spline sleeve (302) slidably connected to the outside of the spline shaft (301), an installation assembly for installing and connecting the spline sleeve (302) is provided between the spline sleeve (302) and the support frame (101), a drive assembly for driving the spline sleeve (302) is provided on the support frame (101), and a pressing assembly for pressing the spline shaft (301) is provided on the support frame (101).

2. The centrifugal casting mold for a paper drying cylinder according to claim 1, characterized in that: The extrusion assembly includes a fixed seat (701) fixed to the lower end of the support frame (101). The lower end of the spline shaft (301) and the upper end of the fixed seat (701) are respectively fixed with a first circular plate (702) and a second circular plate (703). The first circular plate (702) and the second circular plate (703) are concentrically arranged. On the opposite side of the first circular plate (702) and the second circular plate (703), a plurality of sets of first hemispherical protrusions (704) and second hemispherical protrusions (705) for mutual abutment transmission are respectively fixed. A spring (706) is sleeved on the outer side of the rotating shaft (202). The two ends of the spring (706) are respectively connected to the bearing seat (201) and the rotating centrifugal frame (102).

3. The centrifugal casting mold for a paper drying cylinder according to claim 2, characterized in that: The drive assembly includes a connecting seat (401) mounted on a support frame (101), a drive motor (402) fixed on the connecting seat (401), and a transmission assembly for auxiliary transmission is provided between the output end of the drive motor (402) and the spline sleeve (302).

4. The centrifugal casting mold for a paper drying cylinder according to claim 3, characterized in that: The transmission assembly includes pulleys (501) fixed to the output end of the drive motor (402) and the outside of the spline sleeve (302), respectively, and the two sets of pulleys (501) are connected and driven by a belt (502).

5. The centrifugal casting mold for a paper drying cylinder according to claim 1, characterized in that: The mounting assembly includes a mounting sleeve (601) that is rotatably connected to the outside of the spline sleeve (302), and the mounting sleeve (601) is fixed to the support frame (101) by multiple sets of L-shaped brackets (602).

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