Safety device for automatic head replacement in automatic fiber placement process

Abstract

The utility model discloses a safety device for automatically changing a head in an automatic fiber placement process, which relates to the field of automatic fiber placement devices and comprises a containing frame, a square anchor fixing part, a positioning pin, a damping mechanism and an anti-tipping mechanism. The square foot margin fixing pieces are fixedly connected to the bottom ends of the supporting legs of the containing frame through bolts, the multiple damping mechanisms are symmetrically arranged on the top of the containing frame, every two anti-tipping mechanisms are arranged on the damping mechanisms in a group, 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. According to the utility model, the spring damping mechanism is adopted, so that rigid collision between the fiber placement head and the accommodating frame during accommodating is effectively avoided, and meanwhile, the phenomenon of tipping caused by uneven quality of the fiber placement head is reduced.

Description

Technical Field

[0001] The utility model relates to the field of automatic fiber placement devices, 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 placement equipment, the automatic placement equipment needs to return to the home point for subsequent operations during the process preparation stage and the yarn changing stage. Due to the material properties of the carbon fiber tow and the influence of production environment factors, the automatic placement 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 placement efficiency.

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

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

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

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

[0007] The utility model discloses a safety device for automatic head changing in an automatic wire laying process, comprising a accommodating frame, a square anchor fixing piece, a positioning pin, a shock absorbing mechanism and an anti-tilt mechanism. The accommodating frame is used to place a wire laying head, the square anchor fixing piece 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 laying head is plug-connected to the shock absorbing mechanism by the positioning pin, and the top of the anti-tilt mechanism is in contact with the bottom of the wire laying head.

[0008] Preferably, a long through hole is vertically opened on the supporting leg of the accommodating frame, and a positioning hole matching the through hole is opened on the square anchor fixing piece. 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 support 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 support positioning sleeve is connected to the bending part of the L-shaped mounting plate which can be slid up and down. The first spring is sleeved on the support 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 support positioning sleeve.

[0010] Preferably, the supporting positioning sleeve includes a cylindrical sleeve with an open 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 includes 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 laying 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 by a threaded connection and can be adjusted up and down, 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-tipping mechanisms are respectively located on the left and right sides of the sleeve.

[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. 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 sequence 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 tray change at the top of the wire placement head;

[0017] 2) The setting of the shock-absorbing mechanism can effectively prevent the placement head from rigidly colliding with the receiving frame during positioning and placement, thereby protecting the safety of the placement head;

[0018] 3) The anti-tipping mechanism is set up, and the support end cover is in contact with the bottom of the wire laying head. 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, a long-torque support for the wire laying head is achieved, effectively preventing the wire laying head from tipping over due to uneven mass distribution.

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

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

[0021] Figure 1 This 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 This is a schematic diagram of the connection structure between a safety device for automatic head replacement in an automatic wire placement process and a wire placement head according to the present invention;

[0023] Figure 3 This is a schematic diagram of the connection structure between the shock absorbing mechanism and the anti-tilt mechanism of the utility model;

[0024] Figure 4 This is a schematic structural diagram of the anti-tilt mechanism of the utility model;

[0025] Figure 5 It is a cross-sectional view of the anti-tilt mechanism of the utility model;

[0026] Figure 6 This is a structural diagram of the positioning pin of the utility model;

[0027] Figure 7 This is a structural diagram of the square anchor fixing of the utility model.

[0028] Explanation of the accompanying drawings: 1. accommodating frame; 2. square anchor fixing piece; 201. positioning hole; 3. positioning pin; 301. positioning pin body; 302. positioning seat; 4. shock-absorbing mechanism; 401. L-shaped mounting plate; 402. support 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

[0029] 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 with reference to 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 intended to limit the present invention.

[0030] like Figure 1-7 As shown, a safety device for automatic head changing in an automatic wire laying process includes 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 the shock absorbing mechanisms 4 are symmetrically arranged on the top of the accommodating frame 1. The anti-tilt mechanisms 5 are arranged on the shock absorbing mechanisms 4 in groups of two. The wire laying head 6 is plug-connected to the shock absorbing mechanism 4 through the positioning pin 3, and the top of the anti-tilt mechanism 5 is in contact with the bottom of the wire laying head 6.

[0031] Specifically, such as Figure 1 and 7 As 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.

[0032] Specifically, the square anchor fixing part 2 is connected to the ground through an expansion screw to achieve fixed positioning of the accommodating frame 1. At the same time, it also plays the role of 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 hole 201 and the through hole in turn and locked to achieve the positioning connection between the square anchor fixing part 2 and the supporting leg, and then complete 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.

[0033] Specifically, such as Figure 3 As shown, the shock absorbing mechanism 4 includes an L-shaped mounting plate 401, a support 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 support positioning sleeve 402 is connected to the bending part of the L-shaped mounting plate 401 that can slide up and down. The first spring 403 is sleeved on the support positioning sleeve 402, and the two ends of the first spring 403 are respectively abutted against the end portions of the L-shaped mounting plate 401 and the support positioning sleeve 402.

[0034] Specifically, the supporting positioning sleeve 402 includes a cylindrical sleeve 4021 with an open 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.

[0035] Specifically, the provision of the shock absorbing mechanism 4 can effectively prevent the placement head 6 from rigidly colliding with the accommodating frame 1 during the positioning and placement process, thereby protecting the safety of the placement head 6 in use.

[0036] Specifically, such as 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 plugged into the sleeve 4021.

[0037] Specifically, the number of the positioning pins 3 matches the number of the supporting positioning sleeves 402 .

[0038] Specifically, the support and positioning of the wire laying head 6 can be achieved by plugging and fitting the positioning pin 3 with the supporting positioning sleeve 402. At the same time, the positioning pin body 301 is set to a conical shape, which is conducive to plugging and fitting 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.

[0039] Specifically, such as 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 that 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 abutted against the end portions of the adjustment seat 502 and the support end cover 505.

[0040] Specifically, the two anti-tilt mechanisms 5 are respectively located on the left and right sides of the sleeve 4021 .

[0041] Specifically, the support end cover 505 is in contact with the bottom of the 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 laying head 6 is achieved, effectively preventing the laying head 6 from tipping over due to uneven mass distribution.

[0042] The use process of this utility model is as follows:

[0043] First, the automated placement equipment locks the gun-changing plate on top of the wire placement head 6 and moves it to just above the accommodating frame 1. The placement angle of the wire placement head 6 is adjusted until the cone head of the locating pin 3 and the supporting positioning sleeve 402 are coaxial (with a tolerance of ±1 mm). Then, the height of the wire placement head 6 is slowly lowered. 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 to 6 mm, the wire placement head 6 can be released.

[0044] Then, the placement head 6 will come into rigid contact with the support and positioning sleeve 402, and under the action of its own weight, they will 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 placement head 6;

[0045] Finally, due to the different shapes of the laying heads 6 and the uneven mass distribution, when the 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 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 laying head 6. The second spring 503 can reduce the impact caused by the tipping and assist in adjusting the height of the support end cover 505 to ensure that the finally lifted laying head 6 is in a horizontal position.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0047] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

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

3. The safety device for automatic head changing in an automatic wire placement 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 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 portion 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. The safety device for automatic head changing in an automatic wire placement 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); a positioning boss (4023) is provided at the open end of the sleeve (4021); the top end of the first spring (403) abuts against the positioning boss (4023); and the positioning base (4022) is connected to the other end of the sleeve (4021) by bolts.

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

6. The safety device for automatic head changing in an 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 an automatic wire placement 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 screw thread 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 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 an automatic wire placement 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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