An automated fiber placement machine gantry ram assembly

Abstract

The present application relates to the technical field of ram assembly, in particular to a kind of automatic fiber placement machine tool gantry ram assembly, including crossbeam and the first lead screw being arranged in crossbeam, the outer surface of the first lead screw is spirally connected with first sleeve, and the side of first sleeve is fixedly installed with fixed frame;Z-axis mechanism, it includes the ram being movably installed on fixed frame, fixed seat is also fixedly installed on the fixed frame, balance cylinder is fixedly installed on the fixed seat, the beneficial effects of the present application are: fixed frame is carried out by slide, increase the contact area between slide and fixed frame, improve structural strength, and balance piece is fixedly installed on another fixed frame, for balancing the gravity of ram, so that the stress point of crossbeam is from the inclined direction between first sleeve and crossbeam Stress, become the vertical direction stress between crossbeam and crossbeam, can increase the stress area of crossbeam, so that crossbeam stress is uniform, reduce the abrasion of crossbeam and first sleeve.

Description

Technical Field

[0001] This invention relates to the field of slide ram assembly technology, specifically to a slide ram assembly for an automatic wire laying machine gantry. Background Technology

[0002] Fiber placement machines are mainly used in the aerospace field, which requires extremely high precision and stability. With continuous technological advancements and increasing market maturity, the intelligent, efficient, and precise development of large gantry five-axis automatic fiber placement machines has become the main trend in the industry.

[0003] Patent document CN210188512U discloses a machine tool ram assembly, including a linear guide, a nitrogen balance cylinder, a slide block, a five-axis head, and a ram. The linear guide is connected to both sides of the ram, and the slide block moves up and down in the vertical direction of the ram via the linear guide. The cylinder body of the nitrogen balance cylinder is connected to the slide block, one end of the nitrogen balance cylinder is connected to the ram, and the lower end of the ram is connected to the five-axis head. This application uses the reaction force of nitrogen to balance the weight of the ram, reducing the driving pressure of the servo motor, enhancing the stability of the machine bed, and increasing the service life of the motor.

[0004] In the prior art of the aforementioned patent documents, the slide, i.e. the Z-axis, is located on one side of the Y-axis. Although the weight of the slide is balanced by a nitrogen balance cylinder, which can reduce the driving pressure of the servo motor, its gravity will still be concentrated on one side of the Y-axis. The pressure on the lead screw and crossbeam on the Y-axis is still too great. During operation, the wear on the lead screw and the screw sleeve is difficult to be balanced. Instead, the pressure is borne by individual single points, which can easily increase wear and reduce the service life of the equipment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic gantry slide assembly for a filament laying machine, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an automatic filament laying machine gantry slide assembly, including a crossbeam and a first lead screw disposed in the crossbeam, wherein a first screw sleeve is spirally connected to the outer surface of the first lead screw, and a fixing frame is fixedly installed on one side of the first screw sleeve;

[0007] The Z-axis mechanism includes a slide ram movably mounted on a fixed frame. A fixed seat is also fixedly mounted on the fixed frame, and a balancing cylinder is fixedly mounted on the fixed seat. The output shaft of the balancing cylinder is fixedly connected to the slide ram. By balancing the weight of the slide ram with the balancing cylinder, the stability of the slide ram during operation can be improved.

[0008] Preferably, a carriage is provided on the crossbeam, there is a gap between the carriage and the crossbeam, and the fixed frame is movably disposed between the crossbeam and the carriage.

[0009] Preferably, it also includes a balancing module, which includes a slide plate movably mounted on the upper surface of the crossbeam and a guide post fixedly mounted on the slide plate. The guide post is fitted with a balancing spring on its outer periphery and is movably mounted with a balancing plate. Connectors are fixedly mounted on both sides of the balancing plate, and a balancing rod is movably mounted on the connector. The other end of the balancing rod is connected to the slide block.

[0010] Preferably, it also includes a lubrication module, which includes an oil injection cylinder fixedly mounted on a fixed frame and a piston rod movably mounted inside the oil injection cylinder. A distribution pipe is fixedly mounted at the end of the oil injection cylinder away from the fixed frame, and a power rod is fixedly mounted on the balance plate.

[0011] Preferably, a fixing frame is provided on both sides of the crossbeam, a crossbar is fixedly installed on the fixing frame, and the two fixing frames are fixedly connected by the crossbar. A balancing component is fixedly installed on the fixing frame away from the slide block.

[0012] Preferably, it also includes an adjustment module, which includes a slider movably installed in the balance component and a counterweight fixedly installed on one side of the slider. A rack is fixedly installed on the power rod, a gear meshes below the rack, locking wheels are provided on both sides of the gear, and a thin rope is fixedly connected to the locking wheel, with the other end of the thin rope fixedly connected to the counterweight.

[0013] Preferably, the slider is T-shaped, and the balancing component has a groove adapted to the slider.

[0014] Preferably, a through groove is provided on one side of the slide plate, and the through groove is adapted to the power rod and the rack.

[0015] Preferably, the Z-axis mechanism further includes a second servo motor fixedly mounted on the top of the fixed frame, and a second lead screw fixedly connected to the output shaft of the second servo motor. The outer surface of the second lead screw is helically connected to a second threaded sleeve, and the second threaded sleeve is fixedly connected to the slide block.

[0016] Preferably, a collection chamber is detachably installed at the bottom of the second screw sleeve, and the surface of the collection chamber has a slot corresponding to the position of the second lead screw.

[0017] In the above technical solution, the beneficial effects of the present invention are: by using the carriage to support the fixed frame, the contact area between the carriage and the fixed frame is increased, the structural strength is improved, and a balance component is fixedly installed on another fixed frame to balance the weight of the ram, so that the stress point of the crossbeam changes from the inclined direction between the first threaded sleeve and the crossbeam to the vertical direction between the crossbar and the crossbeam, which can increase the stress area of ​​the crossbeam, make the crossbeam uniformly stressed, and reduce the wear of the crossbeam and the first threaded sleeve.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0019] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0023] Figure 4 This is a three-dimensional structural diagram of the balance cylinder of the present invention;

[0024] Figure 5 This is a three-dimensional exploded view of the carriage structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the balancing module in this invention;

[0026] Figure 7 This is a schematic diagram showing the positional relationship between the balancing module, lubrication module, and adjustment module of the present invention;

[0027] Figure 8 For the present invention Figure 4 A magnified schematic diagram of the partial structure at point A in the middle;

[0028] Figure 9 This is a three-dimensional exploded view of the adjustment module of the present invention;

[0029] Figure 10 This is a schematic diagram showing the force comparison between the first threaded sleeve and the crossbeam of the present invention.

[0030] In the diagram: 1. Crossbeam; 11. First servo motor; 12. First lead screw; 13. First threaded sleeve; 14. Fixing frame; 2. Second servo motor; 21. Second lead screw; 22. Second threaded sleeve; 23. Slide block; 24. Fixing seat; 25. Balance cylinder; 3. Carriage; 4. Carrying plate; 41. Guide post; 42. Round block; 43. Balance spring; 44. Balance plate; 45. Connecting piece; 46. Balance bar; 5. Oil filling cylinder; 51. Piston rod; 52. Distribution pipe; 53. Return spring; 54. Oil filling hole; 55. Power rod; 6. Collection bin; 61. Groove; 7. Crossbar; 71. Balance component; 8. Slider; 81. Counterweight; 82. Rack; 83. Gear; 84. Locking wheel; 85. Fixing frame; 86. Thin rope; 9. Through groove. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Example 1: Please refer to Figures 1 to 5 ,and Figure 10 The present invention provides a technical solution: an automatic wire laying machine gantry slide assembly, including a crossbeam 1 and a first lead screw 12 disposed in the crossbeam 1. The outer surface of the first lead screw 12 is spirally connected to a first screw sleeve 13, and a fixing frame 14 is fixedly installed on one side of the first screw sleeve 13.

[0033] The Z-axis mechanism includes a slide 23 movably mounted on a fixed frame 14. A fixed seat 24 is also fixedly mounted on the fixed frame 14. A balance cylinder 25 is fixedly mounted on the fixed seat 24. The output shaft of the balance cylinder 25 is fixedly connected to the slide 23. By balancing the weight of the slide 23 through the balance cylinder 25, the stability of the slide 23 during operation can be improved.

[0034] A carriage 3 is provided on the crossbeam 1, there is a gap between the carriage 3 and the crossbeam 1, and the fixed frame 14 is movably arranged between the crossbeam 1 and the carriage 3;

[0035] The Z-axis mechanism also includes a second servo motor 2 fixedly mounted on the top of the fixed frame 14, and a second lead screw 21 fixedly connected to the output shaft of the second servo motor 2. The outer surface of the second lead screw 21 is helically connected to a second threaded sleeve 22, and the second threaded sleeve 22 is fixedly connected to the slide ram 23.

[0036] A fixed frame 14 is provided on both sides of the crossbeam 1. A crossbar 7 is fixedly installed on the fixed frame 14, and the two fixed frames 14 are fixedly connected by the crossbar 7. A balance component 71 is fixedly installed on the fixed frame 14 away from the slide ram 23.

[0037] Specifically, a second servo motor 2 is fixedly installed at the end of the crossbeam 1, and the second lead screw 21 is fixedly connected to the output shaft of the second servo motor 2. The crossbeam 1 has a moving groove that matches the crossbar 7 and the first lead screw 12. The traditional slide block is set on one side of the Y-axis. Although there is a structure to balance its own weight and slide rails are set on the upper and lower sides of the crossbeam to share the weight, the weight of the Y-axis still exists on one side. This can easily lead to a single point of force between the screw sleeve and the crossbeam. The single point of force makes it difficult to distribute and transmit the force evenly, which will cause severe wear of the screw sleeve and the crossbeam, reduce the service life, and even reduce the machining accuracy. In this invention, a slide 3 is designed to support the fixed frame 14. Compared to the traditional method of connecting the fixed frame 14 with slide rails on the top and bottom to the crossbeam 1 to distribute the pressure on the first threaded sleeve 13, the single-point force between the first threaded sleeve 13 and the crossbeam 1 is changed to three single-point force between the first threaded sleeve 13 and the crossbeam 1, and between the slider and the slide rail. In this invention, the slide 3 is directly used to support the fixed frame 14, increasing the contact area between the slide 3 and the fixed frame 14, and ball bearings are installed in it. This reduces friction, evenly distributes the pressure on the first threaded sleeve 13, and improves the structural strength.

[0038] Furthermore, by fixing a balancer 71 to another fixed frame 14 to balance the weight of the slide ram 23, the force on the crossbeam 1 changes from the inclined direction between the first threaded sleeve 13 and the crossbeam 1 to the vertical direction between the crossbar 7 and the crossbeam 1, as per the instruction manual. Figure 10 As shown, this increases the bearing area of ​​the crossbeam 1, making the crossbeam 1 bear force evenly and reducing the wear of the crossbeam 1 and the first screw sleeve 13. It should be noted that the two fixed frames 14 are different in that the fixed frame 14 for mounting the slide 23 is a frame with a fixed slide 23, while the slide for mounting the balancer 71 can adopt a structure that can adjust the length. For small machine tools, the weight of the slide is limited, and a balancer of equal weight can be used to balance the weight. For slides with greater weight, the length of the fixed frame can be increased, and the lever principle can be used to balance the weight of the slide with a smaller balancer. For the drive of the screw sleeve, a dual motor and a lead screw can be used for drive.

[0039] Example 2: Please refer to Figures 6 to 9 It also includes a balancing module, which includes a slide plate 4 movably mounted on the upper surface of the crossbeam 1, and a guide post 41 fixedly mounted on the slide plate 4. A balancing spring 43 is sleeved on the outer periphery of the guide post 41, and a balancing plate 44 is movably mounted thereon. Connectors 45 are fixedly mounted on both sides of the balancing plate 44, and a balancing rod 46 is movably mounted on the connector 45. The other end of the balancing rod 46 is connected to the slide ram 23.

[0040] It also includes a lubrication module, which includes an oil injection cylinder 5 fixedly installed on the fixed frame 14, and a piston rod 51 movably installed in the oil injection cylinder 5. A distribution pipe 52 is fixedly installed at the end of the oil injection cylinder 5 away from the fixed frame 14, and a power rod 55 is fixedly installed on the balance plate 44.

[0041] The bottom of the second screw sleeve 22 is detachably equipped with a collection chamber 6, and the surface of the collection chamber 6 is provided with a slot 61 corresponding to the position of the second lead screw 21.

[0042] A through groove 9 is provided on one side of the slide plate 4, and the through groove 9 is adapted to the power rod 55 and the rack 82.

[0043] Specifically, the slide plate 4 is fixedly connected to the fixed frame 14. When the slide ram 23 moves, the slide plate 4 can move accordingly. During the operation of the slide ram 23, it will perform reciprocating lifting and lowering motion. Although a large part of its own weight is balanced by the balancing cylinder 25, the balancing cylinder 25 is fixed on the fixed frame 14, and the weight borne by the fixed frame 14 will not be reduced. In this invention, the balancing spring 43 and the balancing rod 46 can work together to pull the slide ram 23 when it rises and the overall center of gravity of the equipment changes, so that part of its weight becomes the frictional force between it and the fixed frame 14. In this way, the weight of the slide ram 23 can be reduced, and the frictional force can be further reduced by using lubricating oil or ball bearings, thereby reducing the unilateral load on the fixed frame 14.

[0044] Furthermore, a return spring 53 is fitted onto the outer surface of the piston rod 51, and an oil filling hole 54 is provided on the upper surface of the oil filling cylinder 5. When the balance rod 46 pulls the balance spring 43, it will drive the balance plate 44 to move towards the slide ram 23, thereby causing the power rod 55 to move towards the slide ram 23 along with the balance plate 44. When lubrication of the second lead screw 21 is required, when the piston rod 51 is not driven, lubricating oil can be injected into the oil filling cylinder 5 through the oil filling hole 54 and the oil filling hole 54 can be blocked. When the balance plate 44 moves, it will drive the power rod 55 to move, causing the power rod 55 to squeeze the piston rod 51, thereby allowing the lubricating oil to pass through the oil filling hole 54. The distribution pipe 52 of the hole evenly sprays the lubricant onto the surface of the second lead screw 21. During the reciprocating movement of the balance plate 44, since there is no lubricating oil in the oil injection cylinder 5, gas will be sprayed to disperse the lubricating oil on the surface of the second lead screw 21 to the periphery of the second lead screw 21, making the lubrication more uniform. On the other hand, the wear debris generated when the second lead screw 21 and the second screw sleeve 22 are driven together will stick together under the action of lubricating oil and accumulate near the second screw sleeve 22 during its movement. When the second screw sleeve 22 passes the gas spray point, the debris at the second screw sleeve 22 and the second lead screw 21 will be guided into the collection chamber 6.

[0045] Example 3: Please refer to Figure 7 and Figure 9It also includes an adjustment module, which includes a slider 8 movably installed in the balance component 71 and a counterweight 81 fixedly installed on one side of the slider 8. A rack 82 is fixedly installed on the power rod 55, and a gear 83 meshes below the rack 82. Locking wheels 84 are provided on both sides of the gear 83. A thin rope 86 is fixedly connected to the locking wheel 84, and the other end of the thin rope 86 is fixedly connected to the counterweight 81.

[0046] The slider 8 is T-shaped, and the balancing component 71 has a groove that matches the slider 8.

[0047] Specifically, a fixed bracket 85 is fixedly installed on the slide plate 4 to fix the gear 83 and the locking wheel 84. When the slide 23 is at a high position, the counterweight 81 is at a low position. When the slide 23 moves downward, it will drive the balance bar 46, which will drive the power rod 55 to move, thereby causing the rack 82 to drive the gear 83, which will drive the locking wheel 84 to rotate, tightening the thin rope 86 and causing the counterweight 81 to move. When the slide 23 is at a low position, the force point of the counterweight 81 is at the locking wheel 84, while when the slide 23 is at a high position, the force point of the counterweight 81 is at the balance member 71, thereby balancing the change of the center of gravity of the equipment when the slide 23 moves up and down and improving the stability of the equipment.

[0048] In summary, when in use, the invention utilizes the first servo motor 11 to rotate the first lead screw 12, thereby causing the first screw sleeve 13 to move the fixed frame 14. Activating the second servo motor 2 rotates the second lead screw 21, causing the second screw sleeve 22 to move the slide ram 23 up and down. During the lifting and lowering of the slide ram 23, when it is at a higher position, the center of gravity of the equipment shifts upward. The pull of the balance spring 43 and the balance rod 46 indirectly reduces its weight, improving equipment stability and reducing the load on the fixed frame 14. When it is necessary to adjust the second lead screw 23... When the screw 21 is lubricated, the movement of the balance plate 44 will drive the power rod 55 to move, causing the power rod 55 to squeeze the piston rod 51. This allows lubricating oil to be evenly sprayed onto the surface of the second screw 21 through the distribution pipe 52 with through holes on its surface for lubrication. At the same time, the balance plate 44 will also drive the power rod 55 to move, which will cause the rack 82 to drive the gear 83. The gear 83 will drive the locking wheel 84 to rotate, which will tighten the thin rope 86 and cause the counterweight 81 to move, thereby adjusting the center of gravity of the equipment and improving its stability.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gantry slide assembly for an automatic wire laying machine, comprising a crossbeam (1) and a first lead screw (12) disposed within the crossbeam (1), wherein a first threaded sleeve (13) is helically connected to the outer surface of the first lead screw (12), and a fixing frame (14) is fixedly installed on one side of the first threaded sleeve (13), characterized in that: The Z-axis mechanism includes a slide (23) movably mounted on a fixed frame (14). A fixed seat (24) is also fixedly mounted on the fixed frame (14). A balance cylinder (25) is fixedly mounted on the fixed seat (24). The output shaft of the balance cylinder (25) is fixedly connected to the slide (23). The balance cylinder (25) balances the weight of the slide (23), thereby improving the stability of the slide (23) during operation. It also includes a balancing module, which includes a slide plate (4) movably mounted on the upper surface of the crossbeam (1) and a guide column (41) fixedly mounted on the slide plate (4). The guide column (41) is fitted with a balancing spring (43) on its outer periphery, and a balancing plate (44) is movably mounted on the slide plate (4). Connectors (45) are fixedly mounted on both sides of the balancing plate (44), and a balancing rod (46) is movably mounted on the connector (45). The other end of the balancing rod (46) is connected to the slide (23). Through the cooperation of the balancing spring (43) and the balancing rod (46), the slide (23) can be pulled when the slide (23) is raised and the overall center of gravity of the equipment changes. It also includes a lubrication module, which includes an oil injection cylinder (5) fixedly installed on a fixed frame (14) and a piston rod (51) movably installed inside the oil injection cylinder (5). A distribution pipe (52) is fixedly installed at one end of the oil injection cylinder (5) away from the fixed frame (14), and a power rod (55) is fixedly installed on the balance plate (44). Both sides of the crossbeam (1) are provided with fixed frames (14), the slide plate (4) is fixedly connected to the fixed frames (14), a crossbar (7) is fixedly installed on the fixed frames (14), and the two fixed frames (14) are fixedly connected by the crossbar (7). A balance component (71) is fixedly installed on the fixed frame (14) away from the slide (23). It also includes an adjustment module, which includes a slider (8) movably installed in the balance component (71) and a counterweight (81) fixedly installed on one side of the slider (8). A rack (82) is fixedly installed on the power rod (55), and a gear (83) meshes below the rack (82). Locking wheels (84) are provided on both sides of the gear (83). A thin rope (86) is fixedly connected to the locking wheel (84), and the other end of the thin rope (86) is fixedly connected to the counterweight (81). The Z-axis mechanism also includes a second servo motor (2) fixedly installed on the top of the fixed frame (14), and a second lead screw (21) fixedly connected to the output shaft of the second servo motor (2). The outer surface of the second lead screw (21) is spirally connected to a second threaded sleeve (22). The second threaded sleeve (22) is fixedly connected to the slide block (23). When the second lead screw (21) needs to be lubricated, the balance plate (44) moves and drives the power rod (55) to move, so that the power rod (55) squeezes the piston rod (51), so that the lubricating oil is evenly sprayed onto the surface of the second lead screw (21) through the distribution pipe (52) with through holes on the surface to lubricate it. In the subsequent reciprocating movement of the balance plate (44), since there is no lubricating oil in the oil injection cylinder (5), gas will be sprayed.

2. The automatic wire laying machine gantry slide assembly according to claim 1, characterized in that: A carriage (3) is provided on the crossbeam (1), and there is a gap between the carriage (3) and the crossbeam (1), and the fixed frame (14) is movably arranged between the crossbeam (1) and the carriage (3).

3. The automatic wire laying machine gantry slide assembly according to claim 1, characterized in that: The slider (8) is T-shaped, and the balancer (71) has a groove that matches the slider (8).

4. The automatic wire laying machine gantry slide assembly according to claim 1, characterized in that: The slide plate (4) has a through groove (9) on one side, and the through groove (9) is adapted to the power rod (55) and the rack (82).

5. The automatic wire laying machine gantry slide assembly according to claim 1, characterized in that: The bottom of the second screw sleeve (22) is detachably equipped with a collection chamber (6), and the surface of the collection chamber (6) is provided with a slot (61) corresponding to the position of the second lead screw (21).

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