Fiber web feeding device of pre-needling machine

Abstract

The utility model relates to a fiber web feeding device of a pre-needling machine, which comprises a rack, a power mechanism and two feeding rollers, the two feeding rollers are arranged side by side up and down and can rotate relatively, and the two feeding rollers are in transmission connection through a transmission mechanism; the power mechanism is in transmission connection with the feeding roller; the transmission mechanism comprises two combined gears, each combined gear comprises a gear base body, a first outer tooth set and a second outer tooth set, a mounting hole is formed in the center of each gear base body, and second outer teeth of the second outer tooth sets and first outer teeth of the first outer tooth sets are the same in number and are arranged in a staggered mode. The two combined gears correspond to the two feeding rollers one to one, the combined gears are fixedly installed at the first ends of the feeding rollers through the installation holes, the first outer tooth sets of the two combined gears are meshed with each other, and the second outer tooth sets of the two combined gears are meshed with each other. According to the utility model, the transmission between the two feeding rollers is more stable and continuous, so that the conveying stability of a fiber web is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nonwoven mechanical equipment, in particular to a fiber web feeding device of a pre-puncture machine. Background Art

[0002] like Figure 1 As shown, the clamping feeding device of the existing pre-puncture machine generally includes a frame 1, a fiber web conveying mechanism and a power mechanism. The above-mentioned fiber web conveying mechanism and power mechanism are both installed on the frame 1, and the power mechanism is connected to the fiber web conveying mechanism in a transmission manner. The fiber web conveying mechanism generally includes an upper annular clamping curtain 2, a lower annular clamping curtain 3, an upper feeding roller 4, a lower feeding roller 5, an upper active roller 6, a lower active roller 7, an upper tensioning roller 8 and a lower tensioning roller 9. Both ends of the upper and lower feeding rollers 4, 5 and the upper and lower active rollers 6, 7 and the upper and lower tensioning rollers 8, 9 can be rotatably installed on the frame 1. The upper tensioning roller 8 is located at the upper rear of the upper active roller 6, and the lower tensioning roller 9 is located at the lower rear of the lower active roller 7; the upper annular clamping curtain 2 is tensioned on the upper active roller 6 and the upper tensioning roller 8. The upper and lower annular clamping curtains 3 are tensioned on the lower active roller 7 and the lower tensioning roller 9. A backward-inverted "V"-shaped space 10 is formed between the upper annular clamping curtain 2 and the lower annular clamping curtain 3. The distance between the upper and lower annular clamping curtains 2 and 3 at the inlet of the backward-inverted "V"-shaped space 10 is relatively large, and the distance between the upper and lower annular clamping curtains 2 and 3 at the outlet of the backward-inverted "V"-shaped space 10 is relatively small. The upper feeding roller 4 and the lower feeding roller 5 are installed at the outlet of the backward-inverted "V"-shaped space 10. When the fiber web enters the "V"-shaped space 10 between the upper and lower annular clamping curtains 2 and 3, the fiber web is transported forward to between the upper and lower feeding rollers 4 and 5 through the mutual cooperation of the upper and lower annular clamping curtains 2 and 3, and then transported forward to the needle plate of the pre-puncturing machine by the upper feeding roller 4 and the lower feeding roller 5. The power mechanism generally includes a motor 11, which is synchronously connected to the upper and lower driving rollers 6, 7 and the upper and lower feeding rollers 4, 5. The upper and lower feeding rollers 4, 5 are generally embedded with an annular web guide 12 to further improve the ability of the upper and lower feeding rollers 4, 5 to transport the fiber web.

[0003] The diameter of the upper and lower feeding rollers 4 and 5 is generally about 215 mm. The upper and lower feeding rollers 4 and 5 are generally connected by two mutually meshing transmission gears, so that the upper and lower feeding rollers 4 and 5 can rotate relative to each other. However, since the diameters of the upper and lower feeding rollers 4 and 5 are relatively large, the module and tooth pitch of the transmission gears used are relatively large, which easily leads to the transmission between the two transmission gears not being smooth and continuous, thereby affecting the stability of the upper and lower feeding rollers 4 and 5 in conveying the fiber web. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a fiber web feeding device for a pre-puncturing machine, which can make the transmission between the two feeding rollers more stable and continuous, thereby improving the stability of the fiber web conveying. The adopted technical solution is as follows:

[0005] A fiber web feeding device for a pre-puncture machine comprises a frame, a power mechanism and two feeding rollers, the two feeding rollers are arranged side by side up and down and can rotate relatively, and the two feeding rollers are connected by a transmission mechanism; the power mechanism is installed on the frame and is connected by transmission with one of the feeding rollers; the characteristic is that the transmission mechanism comprises two combined gears, each of which comprises a gear base, a first external tooth group and a second external tooth group, a mounting hole is arranged at the center of the gear base, the first external tooth group comprises a plurality of first external teeth arranged uniformly in sequence along the circumference of the gear base, the second external tooth group comprises a plurality of second external teeth arranged uniformly in sequence along the circumference of the gear base, the second external tooth group is located on one side of the first external tooth group, and the second external teeth of the second external tooth group are the same in number as the first external teeth of the first external tooth group and are arranged staggered; the two combined gears correspond to the two feeding rollers one by one, the combined gears are fixedly installed on the first end of the feeding roller through the mounting hole, the first external tooth groups of the two combined gears are meshed with each other, and the second external tooth groups of the two combined gears are meshed with each other.

[0006] The number of second external teeth of the second external tooth group is the same as the number of first external teeth of the first external tooth group and are staggered, that is, the number of first external teeth included in the first external tooth group is exactly the same as the number of second external teeth included in the second external tooth group, and the first external teeth of the first external tooth group and the second external teeth of the second external tooth group are staggered at a certain angle (such as 15 degrees) in the outer circumferential position of the gear base, so that the first external teeth of the first external tooth group and the second external teeth of the second external tooth group are alternately arranged in sequence along the outer circumference of the gear base.

[0007] When working, the power mechanism drives the feeding roller connected thereto to rotate, and utilizes the meshing relationship between the two combined gears of the transmission mechanism to drive the other feeding roller to perform relative rotational motion with the feeding roller, thereby the fiber web can be clamped and compressed and conveyed forward through the cooperation between the two feeding rollers, and the fiber web is conveyed forward to the needle punching area of ​​the pre-puncture machine after being compacted and gripped; during the transmission process, since the first external tooth groups of the two combined gears mesh with each other, the second external tooth groups of the two combined gears mesh with each other, and the second external teeth of the second external tooth group are the same in number and staggered with the first external teeth of the first external tooth group, the first external tooth groups and the second external tooth groups of the two combined gears can be meshed in turn (when the first external teeth come out of the first external tooth groove, the second external teeth enter the second external tooth groove; when the second external teeth come out of the second external tooth groove, the first external teeth enter the first external tooth groove), and the meshing time is doubled compared with the meshing of two conventional ordinary gears, so that the transmission between the two feeding rollers is more stable and continuous, thereby improving the stability of its fiber web conveying.

[0008] As a preferred embodiment of the utility model, the gear base is formed by stacking a first gear base and a second gear base, and the center line of the first gear base coincides with the center line of the second gear base; a first mounting hole is provided at the center of the first gear base, and a second mounting hole is provided at the center of the second gear base, and the first mounting hole and the second mounting hole together constitute the mounting hole; the first external tooth group is provided on the outer peripheral surface of the first gear base, and the second external tooth group is provided on the outer peripheral surface of the second gear base. Specifically, the first gear base and the second gear base are connected and fixed by a plurality of bolt connection structures uniformly arranged in a ring shape. The second gear base can rotate a certain angle relative to the first gear base around its center line, so as to adjust the staggered angle between the second external teeth and the first external teeth.

[0009] As a preferred solution of the utility model, the roller surface of the feeding roller is provided with a plurality of annular grooves arranged in sequence and at equal distances along the axial direction thereof, thereby improving the ability of the two feeding rollers to transport the fiber web.

[0010] As a further preferred embodiment of the utility model, an annular web guide is provided on the annular groove of the feeding roller. Specifically, the annular web guide can be made of nylon material, thereby further improving the ability of the two feeding rollers to transport the fiber web.

[0011] As a preferred solution of the utility model, the power mechanism includes a driving motor, a driving sprocket, a driven sprocket and an endless chain, the driving motor is mounted on the frame, the driving sprocket is fixedly mounted on the output shaft of the driving motor, the driven sprocket is fixedly mounted on the second end of one of the feeding rollers, and the endless chain is tensioned by the driving sprocket and the driven sprocket. When working, the driving motor drives the driving sprocket to rotate, and the feeding roller at the lower side is driven to rotate through the endless chain and the driven sprocket.

[0012] As a preferred solution of the utility model, the fiber web feeding device also includes two adjustment seats and a position adjustment mechanism for adjusting the height positions of the two adjustment seats. The two adjustment seats are installed on the frame through upper and lower guide structures and are arranged side by side. The feeding roller on the upper side can be rotatably installed on the two adjustment seats and is oriented left and right; the feeding roller on the lower side can be rotatably installed on the frame and is connected to the power mechanism. With this structure, the height positions of the two adjustment seats and the feeding rollers thereon can be adjusted by the position adjustment mechanism to change the gap width between the two feeding rollers, thereby ensuring that the two feeding rollers can clamp and compress the fiber web and transport it forward.

[0013] As a further preferred embodiment of the present invention, the upper and lower guide structure includes two lifting guide rails arranged side by side on the left and right, the two lifting guide rails are installed on the frame and run up and down, and the two adjustment seats are respectively installed on the corresponding lifting guide rails and slidingly cooperate with the lifting guide rails; the position adjustment mechanism includes two height adjustment components, the two height adjustment components correspond to the two adjustment seats one by one, the height adjustment component includes an adjusting nut, an adjusting screw, an inclined wedge block and an adjusting cylinder, the cylinder body of the adjusting cylinder is installed on the frame, the piston rod of the adjusting cylinder faces downward and is connected to the corresponding adjusting seat; the adjusting nut is fixed on the frame and its screw hole runs forward and backward, the adjusting screw is installed in the adjusting nut and meshes with the adjusting nut; the bottom of the adjusting seat is provided with a guide inclined surface gradually inclined downward from back to front, and the inclined wedge block is installed at the front end of the adjusting screw and contacts and cooperates with the guide inclined surface. When the gap width between the two feeding rollers needs to be adjusted, the adjusting screws of the two height adjustment assemblies can be rotated, and the meshing relationship between the adjusting screws and the adjusting nuts can be utilized to drive the adjusting screws and the inclined wedges to move forward relative to the adjusting nuts. The surface contact between the inclined surfaces of the inclined wedges and the guiding inclined surfaces at the bottom of the adjusting seats can be utilized to push the two adjusting seats and the feeding rollers thereon to move upward to a certain height relative to the frame to change the gap width between the two feeding rollers, and two adjusting cylinders can be used to apply a downward force to the two adjusting seats to stabilize the positions of the two adjusting seats and the feeding rollers thereon.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] In this fiber web feeding device, the two feeding rollers are transmitted through two combined gears. Since the second external teeth of the second external tooth group are the same in number as the first external teeth of the first external tooth group and are staggered, the meshing cooperation between the first external tooth group and the second external tooth group of the two combined teeth can be completed in turn (when the first external teeth come out of the first external tooth groove, the second external teeth enter the second external tooth groove; when the second external teeth come out of the second external tooth groove, the first external teeth enter the first external tooth groove), and the meshing time is doubled, so that the transmission between the two feeding rollers is more stable and continuous, thereby improving its stability in fiber web transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a fiber web feeding device according to a preferred embodiment of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the combined gear in the preferred embodiment of the utility model.

[0018] Figure 3 It is a schematic diagram of the cooperation between two combined gears in the preferred embodiment of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the position adjustment mechanism and two adjustment seats in the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 4 As shown, the fiber web feeding device of the pre-puncture machine comprises a frame 1, a power mechanism 2 and two feeding rollers 3, the two feeding rollers 3 are arranged side by side up and down and can rotate relatively, and the two feeding rollers 3 are connected by a transmission mechanism 4; the power mechanism 2 is installed on the frame 1 and is connected to one of the feeding rollers 3; the transmission mechanism 4 comprises two combined gears 41, each of which comprises a gear base 411, a first external tooth group 412 and a second external tooth group 413, a mounting hole 4110 is provided at the center of the gear base 411, the first external tooth group 412 comprises a plurality of first external teeth 4121 arranged uniformly in sequence along the circumference of the gear base 411, and a second external tooth group 413. The tooth group 413 includes a plurality of second external teeth 4131 uniformly arranged in sequence along the circumference of the gear base 411. The second external tooth group 413 is located on one side of the first external tooth group 412. The second external teeth 4131 of the second external tooth group 413 are the same in number as the first external teeth 4121 of the first external tooth group 412 and are staggered by 15° relative to the center of the gear base 411. The two combined gears 41 correspond one to one to the two feeding rollers 3. The combined gears 41 are fixedly mounted on the first end of the feeding roller 3 through the mounting hole 4111. The first external tooth groups 412 of the two combined gears 41 are meshed with each other, and the second external tooth groups 413 of the two combined gears 41 are meshed with each other.

[0021] In this embodiment, the gear base 411 is formed by stacking a first gear base 4111 and a second gear base 4112, and the first gear base 4111 and the second gear base 4112 are connected and fixed by a plurality of bolt connection structures 4113 arranged evenly in a ring shape; the center line of the first gear base 4111 and the center line of the second gear base 4112 coincide with each other; a first mounting hole 41110 is provided at the center of the first gear base 4111, and a second mounting hole 41120 is provided at the center of the second gear base 4112, and the first mounting hole 41110 and the second mounting hole 41120 together constitute the mounting hole 4110; the first external tooth group 412 is provided on the outer peripheral surface of the first gear base 4111, and the second external tooth group 413 is provided on the outer peripheral surface of the second gear base 4112. The second gear base can rotate around its center line at a certain angle relative to the first gear base 4111 , and then be connected and fixed by a plurality of bolt connection structures 4113 , so as to adjust the staggered angle between the second outer teeth 4131 and the first outer teeth 4121 .

[0022] In this embodiment, the roller surface of the feeding roller 3 is provided with a plurality of annular grooves 301 arranged equidistantly along the axial direction thereof; an annular web guide 4 is provided on the annular groove 301. Specifically, the annular web guide 4 can be made of nylon material, thereby further improving the ability of the two feeding rollers 3 to transport the fiber web.

[0023] In this embodiment, the power mechanism 2 includes a driving motor 21, a driving sprocket 22, a driven sprocket 23 and an endless chain 24. The driving motor 21 is mounted on the frame 1, the driving sprocket 22 is fixedly mounted on the output shaft of the driving motor 21, the driven sprocket 23 is fixedly mounted on the second end of a feeding roller 3, and the endless chain 24 is tensioned by the driving sprocket 22 and the driven sprocket 23. When working, the driving motor 21 drives the driving sprocket 22 to rotate, and drives the feeding roller 3 at the lower side to rotate through the endless chain 24 and the driven sprocket 23.

[0024] The fiber web feeding device also includes two adjustment seats 5 and a position adjustment mechanism 6 for adjusting the height positions of the two adjustment seats 5. The two adjustment seats 5 are mounted on the frame 1 through upper and lower guide structures 51 and are arranged side by side. The feeding roller 3 on the upper side can be rotatably mounted on the two adjustment seats 5 and is oriented left and right; the feeding roller 3 on the lower side can be rotatably mounted on the frame 1 and is connected to the power mechanism 2. With this structure, the height positions of the two adjustment seats 5 and the feeding rollers 3 thereon can be adjusted by the position adjustment mechanism 6 to change the gap width between the two feeding rollers 3, thereby ensuring that the two feeding rollers 3 can clamp and compress the fiber web and convey it forward.

[0025] In this embodiment, the upper and lower guide structure 51 includes two lifting guide rails 511 arranged side by side on the left and right, and the two lifting guide rails 511 are both installed on the frame 1 and run up and down. The two adjustment seats 5 are respectively installed on the corresponding lifting guide rails 511 and slide with the lifting guide rails 511; the position adjustment mechanism 6 includes two height adjustment components 61, and the two height adjustment components 61 correspond to the two adjustment seats 5 one by one. The height adjustment component 61 includes an adjusting nut 611, an adjusting screw 612, an inclined wedge block 613 and an adjusting cylinder 614. The cylinder body of the adjusting cylinder 614 is installed on the frame 1, and the piston rod of the adjusting cylinder 614 faces downward and is connected to the corresponding adjustment seat 5; the adjusting nut 611 is fixed on the frame 1 and its screw hole runs forward and backward. The adjusting screw 612 is installed in the adjusting nut 611 and meshes with the adjusting nut 611; the bottom of the adjusting seat 5 is provided with a guide inclined surface 52 which gradually tilts downward from back to front, and the inclined wedge block 613 is installed at the front end of the adjusting screw 612 and contacts and cooperates with the guide inclined surface 52. When it is necessary to adjust the gap width between the two feeding rollers 3, the adjusting screws 612 of the two height adjustment components 61 can be rotated, and the meshing relationship between the adjusting screws 612 and the adjusting nuts 611 can be utilized to drive the adjusting screws 612 and the inclined wedges 613 to move forward relative to the adjusting nuts 611. The inclined surfaces of the inclined wedges 613 and the guide inclined surfaces 52 at the bottom of the adjusting seat 5 can be used to contact and cooperate with each other to push the two adjusting seats 5 and the feeding rollers 3 thereon to move upward to a certain height relative to the frame 1 to change the gap width between the two feeding rollers 3. The adjusting cylinder 614 can be used to apply a downward force to the adjusting seat 5 to stabilize the positions of the two adjusting seats 5 and the feeding rollers 3 thereon.

[0026] The following is a brief description of the working principle of the fiber web feeding device of this pre-puncture machine:

[0027] When working, the power mechanism 2 drives the feeding roller 3 connected thereto to rotate, and utilizes the meshing relationship between the two combined gears 41 of the transmission mechanism 4 to drive the other feeding roller 3 to rotate relative to the feeding roller 3, thereby the fiber web can be clamped and compressed and transported forward through the cooperation between the two feeding rollers 3, and after the fiber web is compacted and gripped, it is transported forward to the needling area of ​​the pre-needling machine; in the transmission process, since the first external tooth groups 412 of the two combined gears 41 are meshed with each other, the second external tooth groups 413 of the two combined gears 41 are meshed with each other, and the second external tooth groups 4131 of the second external tooth group 413 is meshed with the first external tooth group 413. The number of first external teeth 4121 of an external tooth group 412 is the same and they are staggered, so that the meshing cooperation between the first external tooth group 412 and the second external tooth group 413 of the two combined teeth can be completed alternately (when the first external tooth 4121 comes out of the first external tooth groove, the second external tooth 4131 enters the second external tooth groove; when the second external tooth 4131 comes out of the second external tooth groove, the first external tooth 4121 enters the first external tooth groove), and the meshing time is doubled compared with the meshing of two traditional ordinary gears, so that the transmission between the two feeding rollers 3 is smoother and more continuous, thereby improving its stability in fiber web transportation.

[0028] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A web feeding device for a pre-puncture machine, comprising a frame, a power mechanism and two feeding rollers, the two feeding rollers are arranged side by side and can rotate relative to each other, and the two feeding rollers are connected by a transmission mechanism; the power mechanism is installed on the frame and is connected to one of the feeding rollers; the characteristics are: The transmission mechanism includes two combined gears, each of which includes a gear base, a first external tooth group and a second external tooth group. A mounting hole is provided at the center of the gear base. The first external tooth group includes a plurality of first external teeth uniformly arranged in sequence along the circumference of the gear base. The second external tooth group includes a plurality of second external teeth uniformly arranged in sequence along the circumference of the gear base. The second external tooth group is located on one side of the first external tooth group. The number of the second external teeth of the second external tooth group is the same as the number of the first external teeth of the first external tooth group and they are staggered. The two combined gears correspond to the two feeding rollers one by one. The combined gears are fixedly mounted on the first end of the feeding roller through the mounting hole. The first external tooth groups of the two combined gears are meshed with each other, and the second external tooth groups of the two combined gears are meshed with each other.

2. A fiber web feeding device for a pre-puncture machine according to claim 1, characterized in that: The gear base is formed by stacking a first gear base and a second gear base, and the center line of the first gear base coincides with the center line of the second gear base; a first mounting hole is provided at the center of the first gear base, and a second mounting hole is provided at the center of the second gear base, and the first mounting hole and the second mounting hole together constitute the mounting hole; the first external tooth group is provided on the outer peripheral surface of the first gear base, and the second external tooth group is provided on the outer peripheral surface of the second gear base.

3. A fiber web feeding device for a pre-needling machine according to claim 1, characterized in that: The roller surface of the feeding roller is provided with a plurality of annular grooves which are arranged in sequence and at equal intervals along the axial direction thereof.

4. A fiber web feeding device for a pre-needling machine according to claim 3, characterized in that: An annular mesh guide is arranged on the annular groove.

5. The fiber web feeding device of the pre-needling machine according to claim 1, characterized in that: The power mechanism includes a driving motor, a driving sprocket, a driven sprocket and an endless chain. The driving motor is mounted on the frame, the driving sprocket is fixedly mounted on the output shaft of the driving motor, the driven sprocket is fixedly mounted on the second end of one of the feeding rollers, and the endless chain is tensioned by the driving sprocket and the driven sprocket.

6. A fiber web feeding device for a pre-needling machine according to claim 1, characterized in that: The fiber web feeding device also includes two adjustment seats and a position adjustment mechanism for adjusting the height positions of the two adjustment seats. The two adjustment seats are installed on the frame through upper and lower guide structures and are arranged side by side left and right. The feeding roller on the upper side can be rotatably installed on the two adjustment seats and is oriented left and right; the feeding roller on the lower side can be rotatably installed on the frame and is transmission-connected to the power mechanism.

7. A fiber web feeding device for a pre-needling machine according to claim 6, characterized in that: The upper and lower guide structure includes two lifting guide rails arranged side by side on the left and right, both of which are installed on the frame and run up and down, and two adjustment seats are respectively installed on the corresponding lifting guide rails and slidably cooperate with the lifting guide rails; the position adjustment mechanism includes two height adjustment components, and the two height adjustment components correspond to the two adjustment seats one by one. The height adjustment component includes an adjusting nut, an adjusting screw, an inclined wedge block and an adjusting cylinder. The cylinder body of the adjusting cylinder is installed on the frame, and the piston rod of the adjusting cylinder faces downward and is connected to the corresponding adjusting seat; the adjusting nut is fixed on the frame and its screw hole runs forward and backward, and the adjusting screw is installed in the adjusting nut and meshes with the adjusting nut; the bottom of the adjusting seat is provided with a guide inclined surface that gradually tilts downward from back to front, and the inclined wedge block is installed at the front end of the adjusting screw and contacts and cooperates with the guide inclined surface.

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