Safety device for automatic head replacement in automatic fiber placement process

Abstract

The invention discloses a safety device for automatic head replacement in an automatic fiber placement process, and relates to the field of automatic fiber placement devices.The safety device comprises a containing frame, a square foot margin fixing part, a positioning pin, a damping mechanism and an anti-tipping mechanism, the containing frame is used for containing a fiber placement head, and the square foot margin fixing part is fixedly connected to the bottom end of a supporting leg of the containing frame through a bolt; the multiple damping mechanisms are symmetrically arranged at the top of the containing frame, the anti-tipping mechanisms are arranged on the damping mechanisms in pairs, the fiber placement head is connected with the damping mechanisms in an inserted mode through positioning pins, and the tops of the anti-tipping mechanisms abut against the bottom of the fiber placement head. The spring damping mechanism is adopted, rigid collision between the fiber placement head and the containing frame is effectively avoided when the fiber placement head is contained, and meanwhile the phenomenon that the fiber placement head is overturned due to uneven mass is reduced.

Description

Technical Field

[0001] The invention relates to the field of automatic fiber placement devices, and in particular to a safety device for automatic head replacement in an automatic fiber placement process. Background Art

[0002] At present, during the process of laying carbon fiber by automatic composite material laying equipment, the automatic laying equipment needs to return the equipment to the home point for subsequent operations during the process preparation stage and the yarn changing stage. Due to the material characteristics of the carbon fiber tow and the influence of production environment factors, the automatic laying equipment often encounters problems such as wire blockage, material accumulation, and yarn stripping when laying carbon fiber. Once these situations occur, the equipment must be stopped and handled, which seriously affects the laying efficiency.

[0003] In the field of automation, the widespread application of gun-disc changing technology has solved the above-mentioned problems and significantly improved production efficiency. However, in the actual production application of the automatic wire placing head gun-disc changing device, some new problems have also been exposed. First, when placing the automatic wire placing head device on the receiving frame, the deviation requirements allowed by the gun-disc changing must be met. Once the receiving frame is not positioned accurately, it is very likely to cause a rigid collision between the wire placing head and the receiving frame, thereby damaging the service life of the equipment. Second, since the structure of the automatic wire placing head is relatively complex and there is an uneven mass distribution, it is easy to tip over during use, posing a great safety hazard to production.

[0004] Therefore, how to develop a safety device for automatic head changing in the automatic wire placing process, using a spring shock-absorbing mechanism to effectively avoid the rigid collision between the wire placing head and the receiving frame during placement, and at the same time, reduce the occurrence of tipping caused by uneven quality of the wire placing head, has become a technical problem that needs to be urgently solved by people in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a safety device for automatic head changing in the automatic wire placing process, which adopts a spring shock-absorbing mechanism to effectively avoid the rigid collision between the wire placing head and the accommodating frame when the wire placing head is accommodated, and at the same time, reduce the occurrence of tipping caused by uneven quality of the wire placing head.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention discloses a safety device for automatic head changing in an automatic wire placing process, comprising a accommodating frame, a square anchor fixing, a positioning pin, a shock absorbing mechanism and an anti-tilt mechanism, wherein the accommodating frame is used to place a wire placing head, the square anchor fixing is fastened to the bottom end of the supporting leg of the accommodating frame by bolts, a plurality of the shock absorbing mechanisms are symmetrically arranged on the top of the accommodating frame, the anti-tilt mechanism is arranged on the shock absorbing mechanism in groups of two, the wire placing head is plug-connected to the shock absorbing mechanism by the positioning pin, and the top of the anti-tilt mechanism abuts against the bottom of the wire placing head.

[0008] Preferably, a long through hole is vertically opened on the supporting leg of the accommodating frame, a positioning hole matching the through hole is opened on the square anchor fixing piece, and the square anchor fixing piece is slidably mounted on the supporting leg and is fastened to the supporting leg by bolts.

[0009] Preferably, the shock absorbing mechanism includes an L-shaped mounting plate, a supporting positioning sleeve and a first spring, at least two of the L-shaped mounting plates are symmetrically arranged on the top of the accommodating frame by bolts, the supporting positioning sleeve is slidable up and down at the bending part of the L-shaped mounting plate connected, the first spring is sleeved on the supporting positioning sleeve, and the two ends of the first spring are respectively abutted against the end parts of the L-shaped mounting plate and the supporting positioning sleeve.

[0010] Preferably, the supporting positioning sleeve comprises a cylindrical sleeve with an opening at one end and a positioning base, the open end of the sleeve is provided with a positioning boss, the top end of the first spring abuts against the positioning boss, and the positioning base is connected to the other end of the sleeve by bolts.

[0011] Preferably, the locating pin comprises a locating pin body and a locating seat, the locating seat is arranged on the top of the locating pin body and is fastened to the bottom of the wire placing head by bolts, and the locating pin body is plug-fitted with the sleeve.

[0012] Preferably, the number of the positioning pins matches the number of the supporting positioning sleeves.

[0013] Preferably, the anti-tilt mechanism includes a limit block, an adjustment seat, a second spring, a support rod and a support end cover, the adjustment seat is connected to the bend of the L-shaped mounting plate in a manner that can be adjusted up and down by a thread, a through hole is provided inside the adjustment seat, the support rod is slidably connected to the adjustment seat through the through hole, the bottom end of the support rod passes through the adjustment seat and is fixedly connected to the limit block, the support end cover is arranged on the top of the support rod, the second spring is sleeved on the support rod, and the two ends of the second spring are respectively abutted against the end portions of the adjustment seat and the support end cover.

[0014] Preferably, the two anti-tilt mechanisms are located on the left and right sides of the sleeve respectively.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are:

[0016] 1) Setting of square anchor fixings. The square anchor fixings are connected to the ground through expansion screws to achieve fixed positioning of the accommodating frame. At the same time, they also play the role of leveling the accommodating frame. The square anchor fixings are slidably sleeved on the supporting legs of the accommodating frame, and the installation position of the square anchor fixings can be adjusted up and down. After the adjustment is completed, the bolts are passed through the positioning holes and through holes in turn and locked to achieve the positioning connection between the square anchor fixings and the supporting legs, thereby completing the leveling operation of the accommodating frame to meet the allowable deviation requirements of the gun change disc at the top of the wire laying head;

[0017] 2) The setting of the shock-absorbing mechanism can effectively prevent the wire placement head from having a rigid collision with the receiving frame during the positioning and placement process, thereby protecting the safety of the wire placement head;

[0018] 3) The anti-tipping mechanism is set up, the support end cover is abutted against the bottom of the wire laying head, and since the adjustment seat is threadedly connected to the L-shaped mounting plate, the user can adjust the height of the support end cover by rotating the adjustment seat. In conjunction with the second spring, the long-torque support of the wire laying head is achieved, effectively preventing the wire laying head from tipping over due to uneven mass distribution.

[0019] In general, the present invention can complete the leveling operation of the accommodating frame through the square anchor fixings to meet the deviation requirements of the gun changing disc at the top of the wire placing head. At the same time, a spring shock absorbing mechanism is adopted to effectively avoid the rigid collision between the wire placing head and the accommodating frame when the wire placing head is accommodated, thereby extending its service life. In addition, the setting of the anti-tipping mechanism realizes the long-torque stable support of the wire placing head, reducing the occurrence of tipping caused by uneven quality of the wire placing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of a safety device for automatic head changing in an automatic wire laying process according to the present invention;

[0022] Figure 2 It is a schematic diagram of the connection structure between a safety device for automatic head replacement in an automatic wire placing process and a wire placing head according to the present invention;

[0023] Figure 3 It is a schematic diagram of the connection structure between the shock absorbing mechanism and the anti-tilt mechanism of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the anti-tilt mechanism of the present invention;

[0025] Figure 5 is a cross-sectional view of the anti-tilt mechanism of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the positioning pin of the present invention;

[0027] Figure 7 It is a schematic structural diagram of a square anchor fixing member of the present invention;

[0028] Figure 8 The present invention is used in a state diagram Figure 1 ;

[0029] Fig. 9 The present invention is used in a state diagram Figure 2 .

[0030] Explanation of the accompanying drawings: 1. accommodating frame; 2. square anchor fixing; 201. positioning hole; 3. positioning pin; 301. positioning pin body; 302. positioning seat; 4. shock absorbing mechanism; 401. L-shaped mounting plate; 402. supporting positioning sleeve; 4021. sleeve; 4022. positioning base; 4023. positioning boss; 403. first spring; 5. anti-tipping mechanism; 501. limit block; 502. adjustment seat; 503. second spring; 504. support rod; 505. support end cover; 6. wire laying head. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] like Figure 1-7 As shown, a safety device for automatic head changing in an automatic wire placing process comprises a accommodating frame 1, a square anchor fixing member 2, a positioning pin 3, a shock absorbing mechanism 4 and an anti-tilt mechanism 5, wherein the accommodating frame 1 is used to place a wire placing head 6, the square anchor fixing member 2 is fastened to the bottom end of the supporting leg of the accommodating frame 1 by bolts, a plurality of the shock absorbing mechanisms 4 are symmetrically arranged on the top of the accommodating frame 1, the anti-tilt mechanism 5 is arranged on the shock absorbing mechanism 4 in groups of two, the wire placing head 6 is plug-connected to the shock absorbing mechanism 4 by the positioning pin 3, and the top of the anti-tilt mechanism 5 is in contact with the bottom of the wire placing head 6.

[0033] Specifically, Figure 1 and 7As shown, a long through hole is vertically opened on the supporting leg of the accommodating frame 1, and a positioning hole 201 matching the through hole is opened on the square anchor fixing member 2. The square anchor fixing member 2 is slidably mounted on the supporting leg and is fastened to the supporting leg by bolts.

[0034] Specifically, the square anchor fixing part 2 is connected to the ground through expansion screws to achieve fixed positioning of the accommodating frame 1. At the same time, it also plays a role in leveling the accommodating frame 1. The square anchor fixing part 2 is slidably mounted on the supporting leg of the accommodating frame 1, and the installation position of the square anchor fixing part 2 can be adjusted up and down. After the adjustment is completed, the bolts are passed through the positioning holes 201 and the through holes in turn and locked to achieve the positioning connection between the square anchor fixing part 2 and the supporting legs, thereby completing the leveling operation of the accommodating frame 1 to meet the deviation requirements allowed by the gun changing disc at the top of the wire laying head 6.

[0035] Specifically, Figure 3 As shown, the shock absorbing mechanism 4 includes an L-shaped mounting plate 401, a supporting positioning sleeve 402 and a first spring 403. At least two of the L-shaped mounting plates 401 are symmetrically arranged on the top of the accommodating frame 1 by bolts. The supporting positioning sleeve 402 is connected to the bending part of the L-shaped mounting plate 401 which can be slid up and down. The first spring 403 is sleeved on the supporting positioning sleeve 402, and the two ends of the first spring 403 are respectively abutted against the ends of the L-shaped mounting plate 401 and the supporting positioning sleeve 402.

[0036] Specifically, the supporting positioning sleeve 402 includes a cylindrical sleeve 4021 with an opening at one end and a positioning base 4022. The open end of the sleeve 4021 is provided with a positioning boss 4023. The top end of the first spring 403 abuts against the positioning boss 4023. The positioning base 4022 is connected to the other end of the sleeve 4021 by bolts.

[0037] Specifically, the provision of the shock absorbing mechanism 4 can effectively prevent the wire placement head 6 from having a rigid collision with the accommodating frame 1 during the positioning and placement process, thereby protecting the safety of the wire placement head 6 in use.

[0038] Specifically, Figure 6 As shown, the locating pin 3 includes a locating pin body 301 and a locating seat 302 . The locating seat 302 is arranged on the top of the locating pin body 301 and is fastened to the bottom of the wire laying head 6 by bolts. The locating pin body 301 is plug-fitted with the sleeve 4021 .

[0039] Specifically, the number of the positioning pins 3 matches the number of the supporting positioning sleeves 402 .

[0040] Specifically, the support and positioning of the wire laying head 6 can be achieved through the plug-in cooperation between the positioning pin 3 and the supporting positioning sleeve 402. At the same time, the positioning pin body 301 is set to a conical shape, which is conducive to the plug-in cooperation with the supporting positioning sleeve 402, thereby facilitating rapid positioning. In addition, the positioning pin 3 and the wire laying head 6 are set to a detachable structure, which is conducive to later replacement operations.

[0041] Specifically, Figure 4-5 As shown, the anti-tilt mechanism 5 includes a limit block 501, an adjustment seat 502, a second spring 503, a support rod 504 and a support end cover 505. The adjustment seat 502 is connected to the bending part of the L-shaped mounting plate 401 by a threaded connection so as to be adjustable up and down. A through hole is provided inside the adjustment seat 502. The support rod 504 is slidably connected to the adjustment seat 502 through the through hole. The bottom end of the support rod 504 passes through the adjustment seat 502 and is fixedly connected to the limit block 501. The support end cover 505 is arranged on the top of the support rod 504. The second spring 503 is sleeved on the support rod 504, and the two ends of the second spring 503 are respectively abutted against the ends of the adjustment seat 502 and the support end cover 505.

[0042] Specifically, the two anti-tilt mechanisms 5 are respectively located on the left and right sides of the sleeve 4021 .

[0043] Specifically, the support end cover 505 is abutted against the bottom of the wire laying head 6. Since the adjustment seat 502 is threadedly connected to the L-shaped mounting plate 401, the user can adjust the height of the support end cover 505 by rotating the adjustment seat 502. In conjunction with the second spring 503, the long-torque support of the wire laying head 6 is achieved, effectively preventing the wire laying head 6 from tipping over due to uneven mass distribution.

[0044] like Figure 8-9 As shown, the use process of the present invention is as follows:

[0045] First, the automated placement equipment locks the gun changing plate on the top of the wire placement head 6 and moves it to the top of the accommodating frame 1, adjusts the placement angle of the wire placement head 6 until the cone head of the positioning pin 3 is coaxial with the supporting positioning sleeve 402 (tolerance ±1mm), and then slowly lowers the height of the wire placement head 6. When the gap between the upper end surface of the supporting positioning sleeve 402 and the lower end surface of the positioning seat 302 reaches 2-6mm, the wire placement head 6 can be released.

[0046] Then, the wire placement head 6 will come into rigid contact with the support and positioning sleeve 402, and under the action of its own gravity, they will both generate a downward impact force toward the receiving frame 1. At this time, the first spring 403 will be compressed, thereby reducing the impact force generated by the support and positioning sleeve 402 and the wire placement head 6.

[0047] Finally, since the wire laying heads 6 have different shapes and uneven mass distribution, when the wire laying heads 6 are placed on the receiving frame 1, they will tip over to the side with larger mass. At this time, the anti-tipping mechanism 5 will lift the wire laying head 6 with a long torque to prevent it from continuing to tip over to one side. The support end cover 505 of the anti-tipping mechanism 5 is in contact with the wire laying head 6, and the second spring 503 can mitigate the impact caused by the tipping and assist in adjusting the height of the support end cover 505 to ensure that the finally lifted wire laying head 6 is in a horizontal position.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A safety device for automatic head changing in automatic wire laying process, characterized in that: The invention comprises a accommodating frame (1), a square anchor fixing member (2), a positioning pin (3), a shock absorbing mechanism (4) and an anti-tilt mechanism (5); the accommodating frame (1) is used to place a wire laying head (6); the square anchor fixing member (2) is fastened to the bottom end of the supporting leg of the accommodating frame (1) by bolts; a plurality of shock absorbing mechanisms (4) are symmetrically arranged on the top of the accommodating frame (1); the anti-tilt mechanism (5) is arranged on the shock absorbing mechanism (4) in groups of two; the wire laying head (6) is plug-connected to the shock absorbing mechanism (4) by the positioning pin (3); the top of the anti-tilt mechanism (5) is in contact with the bottom of the wire laying head (6).

2. A safety device for automatic head changing in automatic wire laying process according to claim 1, characterized in that: A long through hole is vertically provided on the support leg of the accommodating frame (1), a positioning hole (201) matching the through hole is provided on the square anchor fixing member (2), and the square anchor fixing member (2) is slidably mounted on the support leg and is fastened to the support leg by bolts.

3. A safety device for automatic head changing in automatic wire laying process according to claim 2, characterized in that: The shock absorbing mechanism (4) comprises an L-shaped mounting plate (401), a supporting and positioning sleeve (402) and a first spring (403); at least two of the L-shaped mounting plates (401) are symmetrically arranged on the top of the accommodating frame (1) by means of bolts; the supporting and positioning sleeve (402) is connected to the bending part of the L-shaped mounting plate (401) so as to be slidable up and down; the first spring (403) is sleeved on the supporting and positioning sleeve (402), and the two ends of the first spring (403) are respectively in contact with the ends of the L-shaped mounting plate (401) and the supporting and positioning sleeve (402).

4. A safety device for automatic head changing in automatic wire laying process according to claim 3, characterized in that: The supporting positioning sleeve (402) comprises a cylindrical sleeve (4021) with an opening at one end and a positioning base (4022), the open end of the sleeve (4021) is provided with a positioning boss (4023), the top end of the first spring (403) is in contact with the positioning boss (4023), and the positioning base (4022) is connected to the other end of the sleeve (4021) by bolts.

5. A safety device for automatic head changing in automatic wire laying process according to claim 4, characterized in that: The locating pin (3) comprises a locating pin body (301) and a locating seat (302); the locating seat (302) is arranged on the top of the locating pin body (301) and is fastened to the bottom of the wire laying head (6) by bolts; the locating pin body (301) is plug-fitted with the sleeve (4021).

6. A safety device for automatic head change in automatic wire placement process according to claim 5, characterized in that: The number of the positioning pins (3) matches the number of the supporting positioning sleeves (402).

7. The safety device for automatic head changing in automatic wire laying process according to claim 4, characterized in that: The anti-tilt mechanism (5) comprises a limit block (501), an adjustment seat (502), a second spring (503), a support rod (504) and a support end cover (505); the adjustment seat (502) is connected to the bending part of the L-shaped mounting plate (401) by means of a thread and can be adjusted up and down; a through hole is provided inside the adjustment seat (502); the support rod (504) is slidably connected to the adjustment seat (502) through the through hole; the bottom end of the support rod (504) passes through the adjustment seat (502) and is fixedly connected to the limit block (501); the support end cover (505) is arranged on the top of the support rod (504); the second spring (503) is sleeved on the support rod (504); and the two ends of the second spring (503) are respectively in contact with the end portions of the adjustment seat (502) and the support end cover (505).

8. The safety device for automatic head changing in automatic wire laying process according to claim 7, characterized in that: The two anti-tilt mechanisms (5) are respectively located on the left and right sides of the sleeve (4021).

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