Lower pre-pressing device of net blanket setting machine

Abstract

The utility model belongs to the technical field of pre-pressing devices, and mainly relates to a lower pre-pressing device of a net blanket setting machine, which comprises two trolley rails, the frame body is arranged on the two vehicle walking rails, and a driving assembly is installed on the frame body; each supporting arm frame is hinged to the frame body, each supporting arm frame is provided with two positioning rollers, and a pressing roller is placed on the multiple positioning rollers; and the multiple linear driving parts correspond to the multiple arm supporting frames one to one, each linear driving part is fixedly installed on the frame body, and the linear driving parts abut against the rear ends of the arm supporting frames. By arranging the multiple sets of supporting arm frames, the multiple linear driving pieces apply pressure to the pressing roller at multiple points, adjustment within the linear pressure range and stability of the linear pressure are achieved, uniformity of the pressure intensity of the net blanket is guaranteed through multi-point pressure applying, the air permeability and surface smoothness of the shaped net blanket are stable, meanwhile, due to the fact that the pressing roller is located on the lower portion, the position of the frame body is low, and therefore the net blanket is not prone to falling off. Therefore, the material consumption for producing and manufacturing the frame body is less.

Description

Technical Field

[0001] The utility model belongs to the technical field of pre-pressing devices, and mainly relates to a lower pre-pressing device of a mesh carpet shaping machine. Background Art

[0002] A papermaking blanket (also called a papermaking blanket or a papermaking felt) is an important dehydrating device in papermaking production and an important factor affecting paper quality, production efficiency and production cost. The blanket is used in the pressing section of a papermaking machine, and mainly removes a certain amount of moisture from the wet paper by applying pressure to the wet paper sheets and the blanket through the papermaking machine press rollers. For example, a blanket is disclosed in a patent application document with publication number CN117500973A.

[0003] During the production and processing of the mesh carpet itself, the produced mesh carpet needs to be pre-pressed so that the air permeability and surface flatness of the mesh carpet after shaping can be in a relatively flat state, which is convenient for subsequent processing. In the prior art, the pre-pressing device of the mesh carpet is generally placed above the heated driving roller, that is, the pre-pressing device moves downward to pre-press the mesh carpet (also called an upper pre-pressing device), but this pre-pressing device is at the top, because of its high position, so the material consumption of producing this pre-pressing device is relatively high. Utility Model Content

[0004] The utility model provides a lower pre-pressing device of a mesh blanket shaping machine, so as to solve the problem of high material consumption in producing and manufacturing the pre-pressing device in the prior art.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A lower pre-pressing device of a carpet shaping machine, comprising:

[0007] Two mutually parallel vehicle tracks, the two vehicle tracks extending in a front-to-rear direction;

[0008] A frame body, which is arranged on the two carriage tracks, and a driving assembly is installed on the frame body to drive the frame body to move on the two carriage tracks;

[0009] A plurality of arm supports are arranged in sequence along the front-to-back direction, the middle part of each arm support is hinged to the frame body around an axis extending in the left-right direction, the front end of each arm support is provided with two positioning rollers rotating around an axis extending in the left-right direction, and a pressure roller is placed on the plurality of positioning rollers, and the pressure roller is used to press the heating drive roller;

[0010] A plurality of linear drive members correspond one to one with the plurality of support arm frames, each of the linear drive members is fixedly mounted on the frame body, and the linear drive member presses against the rear end of the support arm frame to make the middle part of the support arm frame rotate around an axis extending in the left-right direction.

[0011] The invention has the following beneficial effects: by setting a plurality of sets of supporting arms, a plurality of linear driving parts apply pressure to the pressure roller at a plurality of points, so as to achieve adjustment within the range of line pressure and stability of line pressure, and the pressure uniformity of the mesh blanket is ensured by applying pressure at a plurality of points, so that the air permeability and surface flatness of the mesh blanket after shaping are relatively stable, and at the same time, because the pressure roller is at the bottom, the position of the frame is lower, so the material consumption in producing the frame is less.

[0012] Furthermore, the frame includes:

[0013] Two carriage side boxes, the two carriage side boxes are arranged on the corresponding carriage tracks, and each carriage side box is provided with the driving assembly to drive the corresponding carriage side box to move on the carriage track;

[0014] A connecting main beam is fixedly installed between the two carriage side boxes, the connecting main beam extends in the left-right direction, the supporting arm frame is hinged on the connecting main beam, and the linear drive component is fixedly installed on the connecting main beam.

[0015] Furthermore, the connecting main beam includes a front main beam and a rear main beam, and the front main beam and the rear main beam are both fixedly installed between the two carriage side boxes. A connecting piece is fixedly installed between the front main beam and the rear main beam, the support arm frame is hinged on the front main beam, and the linear drive component is fixedly installed on the rear main beam.

[0016] Furthermore, each of the linear drive members is a pressurized airbag, and the pressurized airbag presses the rear end of the support arm frame to make the middle part of the support arm frame rotate around an axis extending in the left-right direction;

[0017] A gas pipeline is installed on the rear main beam, and a solenoid valve is provided between the gas pipeline and each of the pressurized airbags to control the connection and disconnection between the gas pipeline and the pressurized airbag.

[0018] Furthermore, a support track is provided between the two traveling tracks, and the support track extends in the front-rear direction. A support roller is provided on the connecting main beam, and the support roller rolls on the support track.

[0019] It has the following beneficial effects: In order to cope with the problem that the connecting main beam is too long and the connecting main beam pressure is too high during pre-stressing, a support rail can be installed between the two traveling rails. By supporting the supporting rollers on the connecting main beam, the connecting main beam can be prevented from deformation under greater pressure.

[0020] Furthermore, the driving assembly comprises:

[0021] A reduction motor, which is fixedly mounted on the carriage side box;

[0022] The driving roller is rotatably mounted on the carriage side box and rolls on the carriage track. The reduction motor is transmission-connected to the driving roller so that the carriage side box moves on the corresponding carriage track.

[0023] Furthermore, a position detection sensor is installed on the carriage side box to detect the position of the carriage side box.

[0024] The invention has the following beneficial effects: through the position detection sensor, it can be ensured that the carriage side box is parked at the accurate position of the carriage track.

[0025] Furthermore, a pneumatic positioning pin is installed on the carriage side box, and the pneumatic positioning pin is used to be inserted into the corresponding carriage track to fix the carriage side box on the carriage track.

[0026] The invention has the following beneficial effects: the position of the carriage side box on the carriage track can be fixed by the pneumatic positioning pin, so as to ensure that the carriage side box will not move during pre-compression. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0028] Figure 1 It is a structural schematic diagram of the utility model from the first perspective;

[0029] Figure 2 It is a partial structural schematic diagram of the second viewing angle of the utility model;

[0030] Figure 3 for Figure 1 Left view of

[0031] Figure 4 for Figure 1 Rear view of

[0032] Figure 5 for Figure 4 Sectional view along AA direction;

[0033] Figure 6 It is a schematic diagram of the structure during pre-compression.

[0034] Description of reference numerals:

[0035] 1. Carriage track; 2. Carriage side box; 3. Connecting main beam; 4. Support arm frame; 5. Pressurized airbag; 6. Gas pipeline; 7. Solenoid valve; 8. Speed ​​reduction motor; 9. Support track; 10. Support roller; 11. Pressure roller; 12. Drive roller; 13. Pneumatic positioning pin; 14. Front main beam; 15. Rear main beam; 16. Positioning roller; 17. Heating drive roller; 18. Mesh blanket; 19. Connectors. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0037] Various non-limiting embodiments of the present invention are described in detail below. Any number of elements in the accompanying drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0038] like Figure 1-Figure 6 As shown, a pre-pressing device under a carpet shaping machine comprises a carriage track 1, a frame, a supporting arm frame 4 and a linear drive. The frame is mounted on the carriage track 1 and can move on the carriage track 1, the supporting arm frame 4 is hinged to the frame, the linear drive is also mounted on the frame, and the linear drive presses the supporting arm frame 4 to achieve pre-pressing.

[0039] Specifically, the two vehicle rails 1 are parallel to each other, and the two vehicle rails 1 extend along the front-rear direction.

[0040] The frame is installed on two traveling rails 1 , and a driving assembly is installed on the frame to drive the frame to move on the two traveling rails 1 .

[0041] Specifically, the frame includes two carriage side boxes 2 and a connecting main beam 3, wherein the two carriage side boxes 2 are installed on the corresponding carriage rails 1. The connecting main beam 3 is fixedly installed between the two carriage side boxes 2, and the connecting main beam 3 extends in the left-right direction. The middle part of the supporting arm frame 4 is hinged on the connecting main beam 3, and the linear drive component is also fixedly installed on the connecting main beam 3.

[0042] Specifically, the driving assembly includes a reduction motor 8 and a driving roller 12. The reduction motor 8 is fixedly mounted on the carriage side box 2. The driving roller 12 is rotatably mounted on the carriage side box 2, and the driving roller 12 can roll on the carriage track 1. The reduction motor 8 is transmission-connected to the driving roller 12 so that the carriage side box 2 moves on the corresponding carriage track 1.

[0043] There are multiple supporting arm frames 4, and the middle part of each supporting arm frame 4 is hinged on the connecting main beam 3 around an axis extending in the left-right direction. The multiple supporting arm frames 4 are arranged in sequence along the left-right direction on the main beam 3, and the front end of each supporting arm frame 4 is provided with two positioning rollers 16 rotating around an axis extending in the left-right direction. A pressure roller 11 is placed on the multiple positioning rollers 16 (there is no connection between the pressure roller 11 and the carriage side box 2), and the pressure roller 11 and the positioning roller 16 can rotate relative to each other, and the pressure roller 11 is used to press the mesh blanket 18 that is bypassed by the heating drive roller 17.

[0044] Specifically, the connecting main beam 3 includes a front main beam 14 and a rear main beam 15. The structures of the front main beam 14 and the rear main beam 15 are the same, and the difference lies in the different installation positions. The front main beam 14 and the rear main beam 15 are both fixedly installed between the two carriage side boxes 2. A connecting member 19 is fixedly installed between the front main beam 14 and the rear main beam 15 to strengthen the strength of the connecting main beam 3. The supporting arm frame 4 is hinged on the front main beam 14, and the linear drive member is fixedly installed on the rear main beam 15.

[0045] There are multiple linear drive members, and the multiple linear drive members correspond one-to-one to the multiple arm frames 4, that is, the number and installation position are consistent. Each linear drive member is fixedly installed on the rear main beam 15, and the linear drive member presses on the rear end of the arm frame 4 to make the middle part of the arm frame 4 rotate around the axis extending in the left and right directions, so that the pressure roller 11 located at the front end of the arm frame 4 can press the mesh blanket 18 that passes by the heating drive roller 17.

[0046] Specifically, in this embodiment, each linear driving member is a pressurized airbag 5, and the pressurized airbag 5 presses the rear end of the support arm frame 4 to rotate the middle part of the support arm frame 4 around the axis extending in the left and right directions. A gas pipeline 6 is installed on the rear main beam 15, and a solenoid valve 7 is provided between the gas pipeline 6 and each pressurized airbag 5 to control the connection and disconnection between the gas pipeline 6 and the pressurized airbag 5, and also to control the number of pressurized airbags 5 used during pre-pressing. Among them, the linear driving member can also be a cylinder, a hydraulic cylinder or an electric push rod, etc.

[0047] By setting up multiple groups of supporting arms 4, multiple linear driving members apply pressure to the pressure roller 11 at multiple points to achieve adjustment within the line pressure range and stability of the line pressure. The pressure uniformity of the mesh blanket 18 is ensured by applying pressure at multiple points, so that the air permeability and surface flatness of the mesh blanket 18 after shaping are relatively stable. At the same time, because the pressure roller is at the bottom, the position of the frame is lower, so the material consumption in producing the frame is less.

[0048] In order to deal with the problem that the connecting main beam 3 is too long and the pressure on the connecting main beam 3 is too large during pre-stressing, a support rail 9 is also provided between the two traveling rails 1. The support rail 9 extends in the front and rear directions. Support rollers 10 are provided on the connecting main beam 3. The support rollers 10 roll on the support rails 9. Through the support of the support rollers 10 on the connecting main beam 3, the connecting main beam 3 can be prevented from being deformed under greater pressure.

[0049] In order to determine the position of the carriage side box 2 on the carriage track 1, a position detection sensor is installed on the carriage side box 2 to detect the position of the carriage side box 2. The position detection sensor can ensure that the carriage side box 2 is parked at the accurate position of the carriage track 1.

[0050] In order to ensure that the carriage side box 2 does not move back and forth during operation, a pneumatic locating pin 13 is installed on the carriage side box 2. The pneumatic locating pin 13 is used to insert into the corresponding carriage track 1 to fix the carriage side box 2 on the carriage track 1. The pneumatic locating pin 13 can fix the position of the carriage side box 2 on the carriage track 1 to ensure that the carriage side box 2 does not move during pre-compression.

[0051] The working process of this utility model is as follows:

[0052] The reduction motor 8 drives the carriage side box 2 to move on the carriage track 1. When it reaches the specified position, the pneumatic positioning pin 13 is inserted into the carriage track 1 to ensure that the carriage side box 2 will not move. Then, according to the process requirements of pre-pressing the mesh blanket 18, the number of pressurized airbags 5 to be used and the amount of deformation are determined to ensure the pressure applied by the pressure roller 11. The pressurized airbag 5 presses the rear end of the support arm frame 4, and the support arm frame 4 will rotate around the middle hinge position, so that the pressure roller 11 at the front end of the support arm frame 4 can press the heating drive roller 17, that is, to achieve pre-pressing of the heating drive roller 17 on the mesh blanket 18.

Claims

1. A lower pre-pressing device for a carpet setting machine, characterized in that: include: Two mutually parallel vehicle tracks (1), the two vehicle tracks (1) extending in a front-to-rear direction; A frame body, which is arranged on the two carriage tracks (1), and a driving assembly is installed on the frame body to drive the frame body to move on the two carriage tracks (1); A plurality of arm supports (4) are arranged in sequence along the left-right direction, the middle portion of each arm support (4) is hinged to the frame body around an axis extending in the left-right direction, the front end of each arm support (4) is provided with two positioning rollers (16) rotating around an axis extending in the left-right direction, a pressing roller (11) is placed on the plurality of positioning rollers (16), and the pressing roller (11) is used to press the net cloth toward the heating drive roller (17); A plurality of linear drive members, each of the linear drive members corresponds to the plurality of support arm frames (4) in a one-to-one manner, each of the linear drive members is fixedly mounted on the frame body, and the linear drive member presses against the rear end of the support arm frame (4) so ​​that the middle portion of the support arm frame (4) rotates around an axis extending in the left-right direction.

2. The lower pre-pressing device of the carpet shaping machine according to claim 1, characterized in that: The frame comprises: Two carriage side boxes (2), the two carriage side boxes (2) being arranged on the corresponding carriage track (1), and each carriage side box (2) being provided with the driving assembly to drive the corresponding carriage side box (2) to move on the carriage track (1); A connecting main beam (3) is fixedly installed between the two carriage side boxes (2), the connecting main beam (3) extends in the left-right direction, the supporting arm frame (4) is hinged on the connecting main beam (3), and the linear drive component is fixedly installed on the connecting main beam (3).

3. The lower pre-pressing device of the carpet setting machine according to claim 2, characterized in that: The connecting main beam (3) comprises a front main beam (14) and a rear main beam (15), the front main beam (14) and the rear main beam (15) are both fixedly mounted between the two carriage side boxes (2), a connecting member (19) is fixedly mounted between the front main beam (14) and the rear main beam (15), the supporting arm frame (4) is hinged on the front main beam (14), and the linear drive member is fixedly mounted on the rear main beam (15).

4. The lower pre-pressing device of the carpet setting machine according to claim 3, characterized in that: Each of the linear drive members is a pressurized airbag (5), and the pressurized airbag (5) presses the rear end of the support arm frame (4) to make the middle part of the support arm frame (4) rotate around an axis extending in the left-right direction; A gas pipeline (6) is installed on the rear main beam (15), and a solenoid valve (7) is provided between the gas pipeline (6) and each of the pressurized airbags (5) to control the connection and disconnection between the gas pipeline (6) and the pressurized airbag (5).

5. The lower pre-pressing device of the carpet setting machine according to claim 4, characterized in that: A support track (9) is also provided between the two vehicle tracks (1), and the support track (9) extends in the front-rear direction. A support roller (10) is provided on the connecting main beam (3), and the support roller (10) rolls on the support track (9).

6. A lower pre-pressing device of a carpet setting machine according to any one of claims 2 to 5, characterized in that: The drive assembly comprises: A reduction motor (8) fixedly mounted on the carriage side box (2); A driving roller (12) is rotatably mounted on the carriage side box (2) and rolls on the carriage track (1); the reduction motor (8) is transmission-connected to the driving roller (12) so that the carriage side box (2) moves on the corresponding carriage track (1).

7. A lower pre-pressing device of a carpet setting machine according to any one of claims 2 to 5, characterized in that: A position detection sensor is installed on the carriage side box (2) to detect the position of the carriage side box (2).

8. A lower pre-pressing device of a carpet setting machine according to any one of claims 2 to 5, characterized in that: A pneumatic positioning pin (13) is installed on the carriage side box (2), and the pneumatic positioning pin (13) is used to be inserted into the corresponding carriage track (1) to fix the carriage side box (2) on the carriage track (1).

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