Buffer positioning mechanism for placing fiber placement head

Abstract

The utility model relates to the field of full-automatic carbon fiber placement machines, in particular to a buffer positioning mechanism for placing a fiber placement head. The problems that the position of a fiber placement head of existing carbon fiber placement equipment is shifted, and the fiber placement head is not accurately grabbed and positioned by a joint robot are mainly solved. Two elastic limiting stoppers (3), a plurality of hydraulic buffers (4) and a plurality of limiting screws (2) are arranged on the supporting material frame (1), and the two elastic limiting stoppers (3) are located on the two opposite supporting edges of the supporting material frame (1) respectively. The elastic limiting stopper (3) comprises a positioning pin (10), a damping reset spring (8) in the vertical direction is arranged between the positioning pin (10) and the supporting material frame (1), and the upper end of the positioning pin (10) is located in a positioning hole in the lower surface of the fiber placement head (15). According to the buffer positioning mechanism for placing the fiber placement head, the problem of inaccurate positioning of the fiber placement head is solved, and the precision and efficiency of replacing carbon fiber raw materials by the fiber placement head of the full-automatic carbon fiber placement machine are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of full -automatic carbon fiber filament placement machine, specifically speaking, it is a buffer positioning mechanism of placing filament placement head. BACKGROUND

[0002] The carbon fiber laying is the important link in aerospace manufacturing, especially plays the key role in improving the structural strength and reducing the weight. The traditional manual operation equipment filament placement has the problems such as low filament placement efficiency, low filament placement precision, easy to cause waste product etc. With the development of industry, the user's automation requirement and precision requirement of laying equipment are higher and higher, the current laying equipment installs the filament placement head through the 6 axle end of joint robot in full -automatic filament placement unit, carries out filament placement to the filament placement equipment to be installed, and the carbon fiber raw material is replaced by the operator after consumption, and the joint robot is caught again after the replacement is completed. In this process, there are problems such as the placement position of the filament placement head is moving and the joint robot is not accurately positioned when catching the filament placement head, which leads to the failure of the joint robot to catch after replacing the carbon fiber raw material. SUMMARY

[0003] In order to overcome the deficiency that the position of the filament placement head of the existing carbon fiber laying equipment is moving and the joint robot is not accurately positioned when catching the filament placement head, the utility model provides a buffer positioning mechanism for placing the filament placement head, which solves the problem of inaccurate positioning of the filament placement head and improves the precision and efficiency of replacing the carbon fiber raw material of the full -automatic carbon fiber filament placement machine.

[0004] The technical scheme of the utility model is: a buffer positioning mechanism for placing the filament placement head, comprising a supporting rack and a filament placement head, two elastic limiters and a plurality of hydraulic buffers and a plurality of limiting screws are arranged at the contact position between the upper surface of the supporting rack and the filament placement head, and the two elastic limiters are respectively located on the two opposite supporting edges of the supporting rack.

[0005] The elastic limiter comprises a positioning pin, a shock-absorbing reset spring is arranged between the positioning pin and the supporting rack in the vertical direction, and the upper end of the positioning pin is located in the positioning hole of the lower surface of the filament placement head.

[0006] Further, the elastic limiter further comprises a bushing and a shaft, the bushing is located in the round hole of the supporting rack, the upper end of the shaft is provided with a baffle, the lower end of the shaft passes through the bushing and is connected with a nut, the shaft is provided with a shock-absorbing reset spring outside, and the shock-absorbing reset spring is located between the baffle and the bushing.

[0007] Further, a round hole is formed in the top of the shaft, and the lower end of the positioning pin is located in the round hole.

[0008] Further, the limiting screw is connected to the supporting rack through threads, and the height of the limiting screw is adjusted through threads.

[0009] Further, the limiting screw and the hydraulic buffer are 4, and are symmetrically distributed on two supporting edges of the supporting rack.

[0010] Further, the supporting rack further comprises two auxiliary elastic limiters, and the two auxiliary elastic limiters are respectively located on the two opposite supporting edges of the supporting rack.

[0011] Further, the auxiliary elastic limiter is provided with an auxiliary positioning pin, and the upper end of the auxiliary positioning pin has a smaller diameter than that of a corresponding auxiliary positioning hole of the filament head.

[0012] The buffering and positioning mechanism has the following beneficial effects: the buffering and positioning mechanism is provided with the elastic limiter and the auxiliary elastic limiter, so that the position of the filament head is accurately positioned, the filament head is prevented from moving during grabbing and placing, the accuracy of the joint robot in grabbing the filament head is effectively ensured, and the replacement efficiency of the carbon fiber material on the filament head is improved. In addition, the elastic limiter and the hydraulic buffer can also reduce the vibration of the filament head and prevent the filament head from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the utility model;

[0014] Figure 2 is an appearance view of the utility model;

[0015] Figure 3 is a sectional view along Figure 2 F-F;

[0016] Figure 4 is a structural schematic view of the elastic limiter;

[0017] Figure 5 is a sectional view along Figure 4 A-A;

[0018] Figure 6 is a structural schematic view of the auxiliary elastic limiter;

[0019] Figure 7 is a sectional view along Figure 6 B-B.

[0020] In the drawing, 1 is a supporting rack, 2 is a limiting screw, 3 is an elastic limiter, 4 is a hydraulic buffer, 5 is an auxiliary elastic limiter, 6 is a nut, 7 is a bushing, 8 is a damping return spring, 9 is a supporting shaft, 10 is a positioning pin, 11 is an auxiliary positioning pin, 12 is an auxiliary supporting shaft, 13 is an auxiliary return spring, 14 is an auxiliary bushing, and 15 is a filament head. DETAILED DESCRIPTION

[0021] The utility model will be described in detail below with the drawings and embodiments, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only some of the embodiments of the utility model, not all. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] In the description of the utility model, it is necessary to understand that the orientation or position relationship indicated by "up", "down", "left", "right", "in", "out", "top", "bottom" and the like is based on the orientation or position relationship shown in the drawings, and the purpose is only to facilitate the description of the utility model and simplify the description, and it does not indicate or imply that the indicated components must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] As shown in Figures 1 to 3 The buffer positioning mechanism for placing the filament laying head comprises a supporting rack 1 and a filament laying head 15. The supporting rack 1 is a square frame, and two opposite protruding supporting edges are arranged in the interior of the square frame. The filament laying head 15 is placed on the two supporting edges when working. In order to prevent the position of the filament laying head from moving, two elastic limiters 3, a plurality of hydraulic buffers 4 and a plurality of limiting screws 2 are arranged at the contact position between the upper surface of the supporting rack 1 and the filament laying head 15. The two elastic limiters 3 are respectively arranged on the two opposite supporting edges of the supporting rack 1. The elastic limiters 3 position the filament laying head 15, prevent the filament laying head from moving and reduce the time for adjustment. The hydraulic buffers 4 can buffer the force of the filament laying head 15 when being placed, reduce the vibration of the filament laying head and make the operation safer. The limiting screws 2 can adjust the height of the filament laying head 15 in the vertical direction.

[0024] The buffer positioning mechanism further comprises two auxiliary elastic limiters 5. Similarly, the two auxiliary elastic limiters 5 are respectively arranged on the two opposite supporting edges of the supporting rack 1, that is, one elastic limiter 3 and one auxiliary elastic limiter 5 are arranged on each supporting edge of the supporting rack 1. As a preferred option, two hydraulic buffers 4 and two limiting screws 2 are further arranged on each supporting edge and symmetrically distributed on the two supporting edges of the supporting rack 1, so that the filament laying head 15 is uniformly stressed.

[0025] As shown in Figure 4 , Figure 5As shown, the elastic position limiter 3 includes a bushing 7, a shaft 9, a positioning pin 10, the upper end of the bushing 7 is provided with a support plate, a circular hole is opened on the support edge of the support rack 1, the lower end of the bushing 7 is located in the circular hole, and the upper end of the support plate is located on the upper surface of the support rack. The shaft 9 is arranged in the bushing 7, the upper end of the shaft 9 is provided with a baffle, the lower end of the shaft 9 passes through the rear end of the bushing 7 and is connected with a nut 6, and the nut 6 is located outside the lower end of the bushing 7. The shaft 9 is provided with a damping reset spring 8 outside, and the damping reset spring 8 is located between the baffle of the shaft 9 and the support plate of the bushing 7, so that when the shaft 9 is subjected to external force from the upper part, the damping reset spring 8 can be compressed, and when the external force is removed, the damping reset spring 8 is upwardly popped to reset, thereby playing a damping role. The top of the shaft 9 is provided with a circular hole, the lower end of the positioning pin 10 is located in the circular hole, the upper end of the positioning pin 9 is located in the positioning hole on the lower surface of the filament laying head 15, and the outer diameter of the positioning pin 9 matches the inner diameter of the positioning hole. In order to avoid damaging the filament laying head 15, the upper end of the positioning pin 9 is provided with a round head.

[0026] The structure of the auxiliary elastic position limiter 5 is similar to that of the elastic position limiter 3, as shown in Figure 6 、 Figure 7 , including an auxiliary bushing 14, an auxiliary shaft 12 and an auxiliary positioning pin 11. Similarly, the auxiliary bushing 14 is located on the support rack 1, the auxiliary shaft 12 passes through the auxiliary bushing 14, the lower end of the auxiliary shaft 12 is connected with a nut, and the auxiliary shaft 12 is provided with an auxiliary reset spring 13 outside. The auxiliary shaft 12 is provided with the auxiliary positioning pin 11, the upper end of the auxiliary positioning pin 11 is slightly smaller in diameter than the diameter of the auxiliary positioning hole on the corresponding filament laying head, that is, the diameter of the auxiliary positioning pin 11 is smaller than the diameter of the positioning pin 10, so that the auxiliary positioning pin 11 plays an auxiliary role during assembly and does not affect the assembly precision and assembly speed.

[0027] The position limiter screw 2 is connected with the support rack 1 through threads, the filament laying head 15 is placed on the position limiter screw 2, and the height of the filament laying head 15 can be adjusted by adjusting the height of the position limiter screw 2.

[0028] When the filament laying head is replaced with carbon fiber material, the articulated robot accurately places the filament laying head on the support rack, and in the process of placement, the positioning hole on the filament laying head is aligned with the elastic position limiter 3 on the support rack, so that the position of the filament laying head can be quickly determined; after the replacement of the carbon fiber is completed, the articulated robot can accurately grasp the filament laying head, and in this process, the position of the filament laying head does not change, thereby effectively ensuring the accuracy of the articulated robot in grasping the filament laying head and improving the replacement efficiency of the carbon fiber material on the filament laying head.

[0029] The above has described various embodiments of the present application, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements in the technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A buffer positioning mechanism for placing a fiber laying head, comprising a support rack (1), a fiber laying head (15), characterized in that: Two elastic limiters (3) and several hydraulic buffers (4) and several limiting screws (2) are arranged at the contact position between the upper surface of the support rack (1) and the filament laying head (15), and the two elastic limiters (3) are respectively arranged on the two opposite support edges of the support rack (1). The elastic limiter (3) comprises a positioning pin (10), and a vertical shock-absorbing reset spring (8) is arranged between the positioning pin (10) and the support rack (1), and the upper end of the positioning pin (10) is located in the positioning hole in the lower surface of the filament laying head (15).

2. The buffer positioning mechanism for a placement head according to claim 1, wherein: The elastic limiter (3) further comprises a bushing (7) and a shaft support (9), the bushing (7) is located in the circular hole of the support rack (1), the upper end of the shaft support (9) is provided with a baffle, the lower end of the shaft support (9) is connected with a nut (6) after penetrating through the bushing (7), the shaft support (9) is externally provided with the shock-absorbing reset spring (8), and the shock-absorbing reset spring (8) is located between the baffle and the bushing (7).

3. The buffer positioning mechanism for a placement head according to claim 2, wherein: The shaft support (9) is provided with a circular hole at the top, and the lower end of the positioning pin (10) is located in the circular hole.

4. The buffer positioning mechanism for a placement head according to claim 3, wherein: The limiting screw (2) is threadedly connected to the support rack (1), and the height of the limiting screw (2) is adjusted through the thread.

5. The buffer positioning mechanism for a placement head according to claim 4, wherein: The limiting screw (2) and the hydraulic buffer (4) are both four in number and symmetrically arranged on the two support edges of the support rack (1).

6. A buffer positioning mechanism for a placement head according to any one of claims 1-5, characterized in that: Two auxiliary elastic limiters (5) are further arranged on the two opposite support edges of the support rack (1).

7. The buffer positioning mechanism for a placement head according to claim 6, wherein: The auxiliary elastic limiter (5) is provided with an auxiliary positioning pin (11), and the upper end of the auxiliary positioning pin (11) has a smaller diameter than the diameter of the corresponding auxiliary positioning hole of the filament laying head.

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