A negative pressure air suction mechanism of a rotary cutter

Abstract

The utility model provides a kind of negative pressure air suction mechanism of rotary cutting machine, comprising: hollow rotating shaft, isolated transmission gear box, negative pressure air suction pipe, the rotating shaft passes through the isolated transmission gear box, the front end of the rotating shaft is connected with the cutting material module of rotary cutting machine, and the rotating shaft is connected between the box wall of the side of the isolated transmission gear box close to the cutting material module by second rotary sealing structure;The rear end of the rotating shaft is connected with the negative pressure air suction pipe by first rotary sealing structure.The utility model solves the problem of powder leakage of the front end and the rear end of rotating shaft in prior art.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, and in particular to a negative pressure suction mechanism for a rotary cutting machine. Background Technology

[0002] In the production process of lithium batteries, the raw material is powder. The powder is piled up at the raw material storage area. When the powder needs to be transported, a rotary cutter is used to rotate and cut the powder from top to bottom and then transport it. The rotary cutter has a channel along its central axis. The powder cut by the rotary cutter is transported through the channel of the rotary shaft. The rotary shaft needs to be connected to a fixed conveying pipeline to connect with subsequent production steps.

[0003] During the process of adsorbing powder in the rotary cutting machine, the powder can easily enter the gearbox through the front and rear ends of the rotating shaft, causing gearbox transmission problems and affecting the service life of the gearbox. Summary of the Invention

[0004] The technical problem to be solved by this utility model embodiment is to provide a negative pressure suction mechanism for a rotary cutting machine, which solves the problem of powder leakage at the front and rear ends of the rotating shaft in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a negative pressure suction mechanism for a veneer lathe, comprising: a hollow rotating shaft, an isolation transmission gearbox, and a negative pressure suction pipe. The rotating shaft passes through the isolation transmission gearbox, and the front end of the rotating shaft is connected to the cutting module of the veneer lathe. The rotating shaft is connected to the side wall of the isolation transmission gearbox near the cutting module through a second rotary sealing structure. The rear end of the rotating shaft is connected to the negative pressure suction pipe through a first rotary sealing structure.

[0006] The first rotary sealing structure includes a first spacer, a bearing structure, a first lip ring, a first snap ring, and a flange. The rotating shaft is a hollow tubular structure. The rotating shaft is installed in the first spacer through the bearing structure. One end of the first spacer is fixed to the flange. A first mounting cavity is opened on the end face of the flange adjacent to the first spacer. The first lip ring and the first snap ring are installed in the first mounting cavity in sequence. The lip opening of the first lip ring faces the first spacer. The flange is fixedly connected to the negative pressure suction pipe. One end of the rotating shaft passes through the first spacer, the first snap ring, the first lip ring, and the flange in sequence. One end of the rotating shaft is located in the channel of the negative pressure suction pipe. The first spacer is fixedly installed on the isolation transmission gearbox by bolts.

[0007] The second rotary sealing structure includes a second spacer, a second lip ring, a third lip ring, a second snap ring, a second bearing, and a second end cap. The rotating shaft passes through the second spacer, the second lip ring, the third lip ring, the second snap ring, the second bearing, and the second end cap in sequence. The second spacer is mounted on the isolation transmission gearbox. The second spacer has a second mounting cavity. The second lip ring, the third lip ring, the second snap ring, and the second bearing are installed in the second mounting cavity in sequence. The lip openings of the second lip ring and the third lip ring face opposite directions. The outer ring of the second bearing is fixedly connected to the second spacer, and the inner ring of the second bearing is fixedly connected to the rotating shaft. The second end cap is fixed to the second spacer by bolts, and the second end cap abuts against the outer ring of the second bearing.

[0008] The isolated transmission gearbox includes a pinion and a large gear. The large gear is mounted on the rotating shaft, and the pinion meshes with the large gear for transmission. A drive motor is mounted on the outer surface of the isolated transmission gearbox, and the pinion is fixedly mounted on the output shaft of the drive motor.

[0009] The bearing structure includes a bearing housing and two first bearings. The bearing housing is fitted onto a rotating shaft, and the inner rings of the two first bearings are fixed on the outer circumference of the rotating shaft. The two first bearings are located at both ends of the bearing housing, and the first spacer is fitted onto the outer rings of the two first bearings.

[0010] It also includes a first end cap, which is fixed to the other end of the first spacer. The first end cap is sleeved on the rotating shaft and abuts against the outer ring of a first bearing.

[0011] The first spacer has an inwardly protruding boss inside, and the two first bearings are located at the two ends of the boss.

[0012] A groove is provided on the inner wall of the first mounting cavity, and the first retaining spring is engaged in the groove, thereby limiting the first lip ring in the first mounting cavity.

[0013] The flange is fixed to one end of the first spacer by bolts.

[0014] The negative pressure suction pipe is fixed to the flange by welding.

[0015] A groove is provided on the inner wall of the second mounting cavity, and the second retaining spring is engaged in the groove. The second retaining spring limits the second lip ring and the third lip ring in the second mounting cavity.

[0016] The large gear is fixedly mounted on the rotating shaft by bolts.

[0017] This utility model provides a negative pressure suction mechanism for a rotary cutting machine. One end achieves a sealed connection between the rotating shaft and the negative pressure suction pipe and the isolation transmission gearbox, and the other end achieves a sealed connection between the rotating shaft and the isolation transmission gearbox. The sealing effect is good, and the material will not leak from the joint. The material is stably conveyed in the rotating shaft and the negative pressure suction pipe, resulting in high working efficiency. The overall structure is simple, stable and reliable, easy to install, and low in cost. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the negative pressure suction mechanism of the rotary cutting machine of this utility model.

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0021] In the picture:

[0022] 1 First end cap; 2 First spacer; 3 Bearing housing; 4 Negative pressure suction pipe; 5 First bearing; 6 First lip ring; 7 Rotating shaft; 8 First snap ring; 9 Flange; 10 Isolation transmission gearbox; 11 Second spacer; 12 Second lip ring; 13 Third lip ring; 14 Second snap ring; 15 Second bearing; 16 Second end cap; 21 Boss; 31 Drive motor; 32 Pinion; 33 Gear; 91 First mounting cavity; 111 Second mounting cavity. Detailed Implementation

[0023] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0026] This utility model provides a negative pressure suction mechanism for a rotary cutting machine, such as... Figure 1-3 It includes: a hollow rotating shaft 7, an isolation transmission gearbox 10, and a negative pressure suction pipe 4. The rotating shaft 7 passes through the isolation transmission gearbox 10; the front end of the rotating shaft 7 is at... Figure 1 The middle part is located at the lower end of the diagram, and the rear end of the rotating shaft 7 is at... Figure 1 The middle part is located at the top of the figure; the front end of the rotating shaft 7 is connected to the cutting module of the veneer, and the rotating shaft 7 is connected to the side wall of the isolation transmission gearbox 10 near the cutting module through a second rotating seal structure; the rear end of the rotating shaft 7 is connected to the negative pressure suction pipe 4 through a first rotating seal structure.

[0027] like Figure 2 The first rotary sealing structure includes a first end cap 1, a first spacer 2, a bearing housing 3, two first bearings 5, a first lip ring 6, a first snap ring 8, and a flange 9. The inner rings of the two first bearings 5 ​​are fixed on the outer circumference of the rotating shaft 7. The bearing housing 3 is fitted on the rotating shaft 7. The two first bearings 5 ​​are located at both ends of the bearing housing 3. The bearing housing 3 plays a limiting role for the two first bearings 5. The first spacer 2 is fitted on the outer rings of the two first bearings 5. The first spacer 2 has an inwardly protruding boss 21 inside. The two first bearings 5 ​​are located at both ends of the boss 21. The boss 21 plays a limiting role for the two first bearings 5.

[0028] One end of the first spacer 2 is fixed to the flange 9 by bolts. A first mounting cavity 91 is opened on the end face of the flange 9 adjacent to the first spacer 2. A first lip ring 6 and a first retaining spring 8 are installed in the first mounting cavity 91 in sequence. The opening direction of the first lip ring 6 faces the first spacer 2. A groove is provided on the inner wall of the first mounting cavity 91. The first retaining spring 8 is locked in the groove and limits the first lip ring 6 in the first mounting cavity 91.

[0029] The negative pressure suction pipe 4 is fixed to the flange 9 by welding. The rotating shaft 7 and the negative pressure suction pipe 4 have a channel along the central axis. One end of the rotating shaft 7 passes through the first end cover 1, bearing seat 3, first bearing 5, first snap ring 8, first lip ring 6, and flange 9 in sequence. One end of the rotating shaft 7 is located in the channel of the negative pressure suction pipe 4.

[0030] The first end cover 1 is fixed to the other end of the first spacer 2 by bolts. The first end cover 1 is sleeved on the rotating shaft 7 and abuts against the outer ring of a first bearing 5.

[0031] The first spacer 2 is fixedly installed on the isolation transmission gearbox 10 by bolts.

[0032] During installation, refer to Figure 2 First, place the first end cap 1 onto the rotating shaft 7, install the first bearing 5 on the rotating shaft 7, then install the bearing seat 3 and the first spacer 2, and then install the second bearing 5. Tighten the first end cap 1 to the first spacer 2 with bolts. In the first mounting cavity 91 of the flange 9, first install the first lip ring 6, then insert the first retaining ring 8. Pass the rotating shaft 7 through the first retaining ring 8, the first lip ring 6, and the flange 9, and then fix the flange 9 to the first spacer 2 with bolts. Figure 1 This places one end of the rotating shaft 7 into the channel of the negative pressure suction pipe 4.

[0033] like Figure 1 The isolating transmission gearbox 10 has a box-like structure. A rotating shaft 7 passes through the isolating transmission gearbox 10. A pinion 32 and a large gear 33 are installed inside the isolating transmission gearbox 10. The pinion 32 and large gear 33 mesh and transmit power. A drive motor 31 is mounted on the outer surface of the isolating transmission gearbox 10. The pinion 32 is fixedly mounted on the output shaft of the drive motor 31. The large gear 33 is fixedly mounted on the rotating shaft 7 by bolts. When the large gear 33 is fixed to the rotating shaft 7 with bolts, sealant is applied to the threaded holes on the rotating shaft 7 to prevent air leakage.

[0034] like Figure 3 The second rotary sealing structure includes a second spacer 11, a second lip ring 12, a third lip ring 13, a second snap ring 14, a second bearing 15, and a second end cap 16. A rotating shaft 7 passes sequentially through the second spacer 11, the second lip ring 12, the third lip ring 13, the second snap ring 14, the second bearing 15, and the second end cap 16. The second spacer 11 is mounted on the isolation transmission gearbox 10. The second spacer 11 has a second mounting cavity 111, in which the second lip ring 12, the third lip ring 13, the second snap ring 14, and the second bearing 15 are sequentially installed. Figure 3 The second lip ring 12 has its lip opening facing downwards, the third lip ring 13 has its lip opening facing upwards, the outer ring of the second bearing 15 is fixedly connected to the second spacer 11, the inner ring of the second bearing 15 is fixedly connected to the rotating shaft 7, the second end cover 16 is fixed to the second spacer 11 by bolts, and the second end cover 16 abuts against the outer ring of the second bearing 15.

[0035] A groove is provided on the inner wall of the second mounting cavity 111, and the second retaining spring 14 is engaged in the groove. The second retaining spring 14 limits the second lip ring 12 and the third lip ring 13 in the second mounting cavity 111.

[0036] At work, such as Figure 1-3 The rotating shaft 7 rotates around its central axis, generating negative pressure at the upper end of the negative pressure suction pipe 4. An airflow is formed in the rotating shaft 7 and the negative pressure suction pipe 4, flowing from the rotating shaft 7 to the negative pressure suction pipe 4. The airflow carries the powder material from the rotating shaft 7 to the negative pressure suction pipe 4, and then into the subsequent production process.

[0037] In summary, the negative pressure suction mechanism of the veneer cutting machine of this utility model achieves a sealed connection between the rotating shaft and the negative pressure suction pipe and the isolation transmission gearbox at one end, and a sealed connection between the rotating shaft and the isolation transmission gearbox at the other end. The sealing effect is good, the material will not leak from the joint, the material is stably conveyed in the rotating shaft and the negative pressure suction pipe, the working efficiency is high, the overall structure is simple, stable and reliable, easy to install, and low in cost.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A negative pressure suction mechanism for a veneer lathe, characterized in that, include: The rotating shaft (7), the isolation transmission gearbox (10), and the negative pressure suction pipe (4) are hollow. The rotating shaft (7) passes through the isolation transmission gearbox (10). The front end of the rotating shaft (7) is connected to the cutting module of the rotary cutter. The rotating shaft (7) and the side wall of the isolation transmission gearbox (10) near the cutting module are connected by a second rotary sealing structure. The rear end of the rotating shaft (7) is connected to the negative pressure suction pipe (4) by a first rotary sealing structure.

2. The negative pressure suction mechanism of the veneer lathe according to claim 1, characterized in that, The first rotary sealing structure includes a first spacer (2), a bearing structure, a first lip ring (6), a first snap ring (8), and a flange (9). The rotary shaft (7) is a hollow tubular structure. The rotary shaft (7) is installed in the first spacer (2) through the bearing structure. The flange (9) is fixed at one end of the first spacer (2). The flange (9) has a first mounting cavity (91) on one end face adjacent to the first spacer (2). The first lip ring (6) and the first snap ring (8) are installed in the first mounting cavity (91) in sequence. The lip opening of the first lip ring (6) faces the first spacer (2). The flange (9) is fixedly connected to the negative pressure suction pipe (4). One end of the rotary shaft (7) passes through the first spacer (2), the first snap ring (8), the first lip ring (6), and the flange (9) in sequence. One end of the rotary shaft (7) is located in the channel of the negative pressure suction pipe (4). The first spacer (2) is fixedly installed on the isolation transmission gearbox (10) by bolts.

3. The negative pressure suction mechanism of the veneer lathe according to claim 1, characterized in that, The second rotary sealing structure includes a second spacer (11), a second lip ring (12), a third lip ring (13), a second snap ring (14), a second bearing (15), and a second end cap (16). The rotating shaft (7) passes through the second spacer (11), the second lip ring (12), the third lip ring (13), the second snap ring (14), the second bearing (15), and the second end cap (16) in sequence. The second spacer (11) is mounted on the isolation transmission gearbox (10), and the second spacer (11) has a second mounting cavity (111). The second lip ring (12), the third lip ring (13), the second snap ring (14), and the second bearing (15) are installed in sequence in the second mounting cavity (111). The lip openings of the second lip ring (12) and the third lip ring (13) face opposite directions. The outer ring of the second bearing (15) is fixedly connected to the second spacer (11), and the inner ring of the second bearing (15) is fixedly connected to the rotating shaft (7). The second end cover (16) is fixed to the second spacer (11) by bolts, and the second end cover (16) abuts against the outer ring of the second bearing (15).

4. The negative pressure suction mechanism of the veneer lathe according to claim 1, characterized in that, The isolation transmission gearbox (10) includes a small gear (32) and a large gear (33). The large gear (33) is mounted on the rotating shaft (7). The small gear (32) meshes with the large gear (33) for transmission. A drive motor (31) is mounted on the outer surface of the isolation transmission gearbox (10). The small gear (32) is fixedly mounted on the output shaft of the drive motor (31).

5. The negative pressure suction mechanism of the veneer lathe according to claim 2, characterized in that, The bearing structure includes a bearing housing (3) and two first bearings (5). The bearing housing (3) is fitted onto the rotating shaft (7). The inner rings of the two first bearings (5) are fixed on the outer circumference of the rotating shaft (7). The two first bearings (5) are located at both ends of the bearing housing (3). The first spacer (2) is fitted onto the outer rings of the two first bearings (5).

6. The negative pressure suction mechanism of the veneer lathe according to claim 5, characterized in that, It also includes a first end cap (1), which is fixed to the other end of the first spacer (2). The first end cap (1) is sleeved on the rotating shaft (7) and abuts against the outer ring of a first bearing (5).

7. The negative pressure suction mechanism of the veneer lathe according to claim 5, characterized in that, The first spacer (2) has an inwardly protruding boss (21) inside, and the two first bearings (5) are located at the two ends of the boss (21).

8. The negative pressure suction mechanism of the veneer lathe according to claim 2, characterized in that, A groove is provided on the inner wall of the first mounting cavity (91), and the first retaining spring (8) is engaged in the groove. The first retaining spring (8) limits the first lip ring (6) in the first mounting cavity (91). The flange (9) is fixed to one end of the first spacer (2) by bolts; the negative pressure suction pipe (4) is fixed to the flange (9) by welding.

9. The negative pressure suction mechanism of the veneer lathe according to claim 3, characterized in that, A groove is provided on the inner wall of the second mounting cavity (111), and the second retaining ring (14) is engaged in the groove. The second retaining ring (14) limits the second lip ring (12) and the third lip ring (13) in the second mounting cavity (111).

10. The negative pressure suction mechanism of the veneer lathe according to claim 4, characterized in that, The large gear (33) is fixedly mounted on the rotating shaft (7) by bolts.

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