Tape laying head driving structure

Abstract

The utility model relates to the technical field of belt paving machines, in particular to a belt paving head driving structure which comprises a rotary bearing seat. The tape head laying unit is rotationally connected to the rotary bearing seat, and the tape head laying unit is provided with a gear ring which penetrates through the center of the rotary bearing seat and protrudes out of the rotary bearing seat; the rotation driving assembly comprises a rotation driving part and a roller assembly connected with the driving end of the rotation driving part; wherein the idler wheel assembly comprises an upper flange, a lower flange connected with the upper flange in parallel and connecting columns which are perpendicular and connected between the upper flange and the lower flange in the circumferential direction, and the arrangement of the connecting columns is matched with teeth of the gear ring. According to the utility model, the traditional gear is modified into the roller assembly, and the connecting column is arranged between the upper flange and the lower flange, so that the meshing degree of the gear ring and the connecting column can be improved, the meshing clearance of the gear ring can be reduced, and compared with the prior art, the steering accuracy during the driving of the tape laying head is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tape laying machines, in particular to a tape laying head driving structure. Background Art

[0002] The tape laying machine is a device used to automatically lay composite tapes, and is widely used in high-performance composite manufacturing fields such as aerospace, automobiles, and wind turbine blades. The tape laying machine is mainly composed of a frame, a multi-axis motion system, a tape laying head, and a control system. The tape laying head is the core component of the tape laying machine, which is responsible for accurately laying the composite tape on the mold.

[0003] In the related art, the steering of the tape laying head is mostly achieved by rotating the gears driven by a motor. However, the inventors have found that the steering accuracy of the tape laying head is affected due to the existence of gaps between the existing gears during rotation. In particular, when driving the tape laying angle of the tape laying head from forward rotation to reverse rotation, larger errors are easily generated, thereby affecting the accuracy of tape laying. Utility Model Content

[0004] In view of at least one of the above technical problems, the utility model provides a driving structure of a tape laying head, which adopts structural improvement to improve the steering accuracy of the tape laying head.

[0005] According to a first aspect of the utility model, a tape laying head driving structure is provided, comprising:

[0006] Slewing bearing seat;

[0007] A tape laying head unit is rotatably connected to the slewing bearing seat, and the tape laying head unit has a gear ring passing through the center of the slewing bearing seat and protruding from the slewing bearing seat;

[0008] A rotation drive assembly, comprising a rotation drive member and a roller assembly connected to a driving end of the rotation drive member;

[0009] The roller assembly includes an upper flange, a lower flange connected in parallel with the upper flange, and a connecting column vertically and circumferentially connected between the upper flange and the lower flange, and the arrangement of the connecting column is adapted to the teeth of the gear ring.

[0010] Furthermore, the gear ring extends between the upper flange and the lower flange.

[0011] Furthermore, when the teeth of the gear ring are meshed with the connecting posts, the tooth shoulders on both sides of the same tooth are in contact with two adjacent connecting posts at the same time.

[0012] Furthermore, the ratio of the number of teeth on the connecting column to the number of teeth on the gear ring is 10:30.

[0013] Furthermore, the rotation driving assembly also has a tightening assembly for maintaining a tight connection between the roller assembly and the gear ring.

[0014] Furthermore, the tightening assembly includes a fixed bracket, a movable plate movably connected to the fixed bracket, and a tightening member fixed on the fixed bracket for applying force toward the movable plate, the driving member is fixed on the movable plate, and the tightening member tightens the movable plate toward the gear ring.

[0015] Furthermore, the movable plate is provided with a slotted hole, and the tightening member tightens the movable plate through bolts and locking nuts.

[0016] Furthermore, the movable plate has a circular hole on one side close to the gear ring and an arc hole on the side away from the gear ring, and the pressing member is arranged on the side away from the circular hole so that the movable plate is pressed in the direction of rotation toward the gear ring.

[0017] The beneficial effects of the utility model are as follows: the utility model modifies the traditional gear into a roller assembly, and through the connecting column set between the upper flange and the lower flange, the meshing degree of the gear ring and the connecting column can be improved, the clearance of the gear ring meshing can be reduced, and thus compared with the prior art, the steering accuracy when the tape laying head is driven is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a structural schematic diagram of the driving structure of the tape laying head in the embodiment of the utility model;

[0020] Figure 2 This is a structural schematic diagram of the tape laying head unit in the embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the engagement between the rotation drive assembly and the gear ring in the embodiment of the utility model;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the meshing of the roller assembly and the gear ring in the embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the tightening assembly in the embodiment of the utility model;

[0024] Figure 6It is a top view of the tightening assembly in the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] like Figures 1 to 6 The tape laying head driving structure shown in the figure comprises a slewing bearing seat 1, a tape laying head unit 2 and a rotating driving assembly 3, as shown in FIG. Figure 1 As shown in the figure, there is a bearing in the slewing bearing seat 1. Of course, it should be pointed out here that the bearing has various forms, for example, it can be a thrust roller bearing for supporting the tape laying head and reducing the resistance when the tape laying head rotates.

[0029] Please continue to refer to Figure 1 In the embodiment of the utility model, the tape laying head unit 2 is rotatably connected to the slewing bearing seat 1, and the tape laying head unit 2 has a gear ring 21 passing through the center of the slewing bearing seat 1 and protruding from the slewing bearing seat 1; that is, Figure 2 As shown in , after the tape laying head unit 2 is rotatably connected in the slewing bearing seat 1, the gear ring 21 on the top thereof can be fixed by bolts, or can also be welded to the tape laying head unit 2.

[0030] In the embodiment of the present utility model, the rotation drive assembly 3 includes a rotation drive member 31 and a roller assembly 32 connected to the driving end of the rotation drive member 31; Figure 3The roller assembly 32 includes an upper flange 32a, a lower flange 32b connected in parallel to the upper flange 32a, and a connecting column 32c vertically and circumferentially connected between the upper flange 32a and the lower flange 32b. The arrangement of the connecting column 32c is adapted to the teeth of the gear ring 21.

[0031] In the above embodiment, by modifying the traditional gear into a roller assembly 32 and providing a connecting column 32c between the upper flange 32a and the lower flange 32b, the meshing degree between the gear ring 21 and the connecting column 32c can be improved, and the meshing clearance of the gear ring 21 can be reduced, thereby improving the steering accuracy when the tape laying head is driven compared to the prior art.

[0032] Based on the above embodiment, optionally, Figure 3 As shown in , the gear ring 21 extends between the upper flange 32a and the lower flange 32b. In the embodiment of the utility model, the distance between the upper flange 32a and the lower flange 32b is slightly greater than the thickness of the gear ring 21, so that the gear ring 21 just extends between the upper and lower flanges 32b. By setting this structural form, the shaking of the gear ring 21 can be reduced and the stability of the gear ring 21 when rotating can be improved; Figure 4 As shown in , when the teeth of the ring gear 21 are meshed with the connecting column 32c, the tooth shoulders on both sides of the same tooth are in contact with two adjacent connecting columns 32c at the same time. By setting up this structural form, the ring gear 21 always maintains contact with the connecting column 32c during the driving process, thereby further improving the stability and steering accuracy during driving. In some embodiments of the utility model, the ratio of the number of teeth on the connecting column 32c and the ring gear 21 is 10:30. Through the above-mentioned setting, better torque can be provided and the control of the rotation angle is also convenient. Of course, those skilled in the art can set the specific gear ratio according to the specific size and weight of the tape laying head unit 2.

[0033] On the basis of the above embodiment, in order to further improve the reliability of the rotation drive, the rotation drive assembly 3 is further provided with a tightening assembly 33, which is used to maintain a tight connection between the roller assembly 32 and the gear ring 21. In the embodiment of the utility model, the specific structure of the tightening assembly 33 is as follows: Figure 5As shown in , the tightening assembly 33 includes a fixed bracket 33a, a movable plate 33b movably connected to the fixed bracket 33a, and a tightening member 33c fixed to the fixed bracket 33a for applying force to the movable plate 33b. The driving member 31 is fixed to the movable plate 33b, and the tightening member 33c tightens the movable plate 33b toward the gear ring 21. The tightening member 33c here can be a bolt screwed on the support, and the movable plate 33b is tightened by tightening the bolt; there are many specific tightening methods. In some embodiments of the utility model, the movable plate 33b has a straight hole, and the tightening member 33c tightens the movable plate 33b by a bolt and a locking nut. It should be pointed out here that in the embodiment of the utility model, the straight hole is arranged parallel to the direction of the gear ring 21. Through the arrangement of the straight hole, on the one hand, it can avoid damage caused by the gear ring 21 being stuck.

[0034] In another embodiment of the present invention, Figure 6 As shown in , the movable plate 33b has a circular hole on one side close to the gear ring 21, and an arc-shaped hole on the side away from the gear ring 21. The pressing member 33c is arranged on the side away from the circular hole, so that the movable plate 33b is pressed in the direction of rotation toward the gear ring 21. In the embodiment of the utility model, the pressing member 33c is arranged on the left side of the movable plate 33b, the circular hole is arranged on the upper left side, and the arrangement of the remaining arc-shaped holes enables the movable plate 33b to rotate a certain angle toward the gear ring 21 with the circular hole as the center. Under the action of the pressing member 33c, the movable plate 33b is always subjected to the force in the direction toward the gear ring 21, thereby ensuring the interaction force between the gear ring 21 and the connecting column 32c, thereby ensuring the reliability of driving the gear ring 21 to rotate.

[0035] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tape laying head driving structure, characterized in that: include: Slewing bearing seat; A tape laying head unit is rotatably connected to the slewing bearing seat, and the tape laying head unit has a gear ring passing through the center of the slewing bearing seat and protruding from the slewing bearing seat; A rotation drive assembly, comprising a rotation drive member and a roller assembly connected to a driving end of the rotation drive member; The roller assembly includes an upper flange, a lower flange connected in parallel to the upper flange, and a connecting column vertically and circumferentially connected between the upper flange and the lower flange, and the arrangement of the connecting column is adapted to the teeth of the gear ring.

2. The tape laying head driving structure according to claim 1, characterized in that: The gear ring extends between the upper flange and the lower flange.

3. The tape laying head driving structure according to claim 1, characterized in that: When the teeth of the gear ring are meshed with the connecting posts, the tooth shoulders on both sides of the same tooth are in contact with two adjacent connecting posts at the same time.

4. The tape laying head driving structure according to claim 1, characterized in that: The ratio of the number of teeth on the connecting column to the number of teeth on the gear ring is 10:

30.

5. The tape laying head driving structure according to claim 1, characterized in that: The rotary drive assembly also has a tightening assembly for maintaining a tight connection between the roller assembly and the gear ring.

6. The tape laying head driving structure according to claim 5, characterized in that: The tightening assembly includes a fixed bracket, a movable plate movably connected to the fixed bracket, and a tightening member fixed to the fixed bracket for applying force toward the movable plate, the driving member is fixed to the movable plate, and the tightening member tightens the movable plate toward the gear ring.

7. The tape laying head driving structure according to claim 6, characterized in that: The movable plate is provided with a slotted hole, and the tightening member tightens the movable plate through bolts and locking nuts.

8. The tape laying head driving structure according to claim 6, characterized in that: The movable plate has a circular hole on one side close to the gear ring and an arc hole on the other side away from the gear ring. The pressing member is arranged on the side away from the circular hole so that the movable plate is pressed in the direction of rotation toward the gear ring.

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