Aviation composite material stretcher

Abstract

The utility model provides an aviation composite material stretcher which comprises a machine frame and a conveying mechanism arranged on the machine frame, and further comprises a pre-stretching mechanism arranged on the machine frame and used for primarily stretching raw materials conveyed by the conveying mechanism; and the stretching mechanism is used for completely stretching the primarily stretched raw materials and comprises a conveying belt arranged in the cavity of the rack, a plurality of groups of pin inserting structures uniformly distributed on the conveying belt and a second motor used for driving the conveying belt to move. According to the device, raw materials can be continuously processed, the stretching processing efficiency of aviation composite materials is greatly improved, in addition, the problem that the raw materials are damaged due to overlarge traction force during single-time stretching is avoided through a two-section stretching mode of pre-stretching and stretching, and in addition, the production efficiency of the aviation composite materials is improved. And the distance between the pin inserting structures of the device can be adjusted, so that the device is wider in application range and higher in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation materials, in particular to an aviation composite material stretching machine. Background Art

[0002] In the field of aerospace, aramid paper honeycomb, as a high-performance composite material, is widely used in the manufacture of aircraft structural components due to its excellent physical and chemical properties. In the manufacturing process of aramid paper honeycomb, the raw materials must first be hot-pressed and trimmed to remove excess parts and ensure the accuracy of the material size and surface quality. The treated aramid paper needs to be stretched and shaped to achieve the designed shape and size. Stretching and shaping is a key step in the manufacturing process of aramid paper honeycomb, which not only ensures the stability of the material during processing, but also improves the mechanical properties and durability of the material.

[0003] Traditional stretching machines often fix one end of the raw material, and then stretch the raw material by inserting a pin into the other end or clamping the other end with a clamping mechanism. This stretching method requires repeated loading and unloading operations of the raw materials, and there is a problem of discontinuous stretching processing production operations, which makes the processing efficiency very low.

[0004] In view of this, an aviation composite material stretching machine is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcomings and provide an aviation composite material stretching machine.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solution: an aviation composite material stretching machine, comprising a frame and a conveying mechanism arranged on the frame, characterized in that it also includes:

[0007] A pre-stretching mechanism, arranged on the frame, for preliminarily stretching the raw material transmitted by the conveying mechanism;

[0008] The stretching mechanism is used to completely stretch the raw material after preliminary stretching, and includes a conveyor belt arranged in the frame cavity, a plurality of groups of pin structures evenly distributed on the conveyor belt, and a second motor for driving the conveyor belt to move.

[0009] Furthermore, the conveying mechanism includes an upper conveying roller rotatably mounted on a frame, a lower conveying roller rotatably mounted on the frame and located below the upper conveying roller, and a first motor for driving the lower conveying roller.

[0010] Furthermore, the pre-stretching mechanism includes an upper stretching roller rotatably mounted on a frame, a lower stretching roller rotatably mounted on the frame and located below the upper stretching roller, and a variable frequency motor for driving the lower stretching roller.

[0011] Furthermore, a mounting bar for carrying the insertion pin structure is fixedly mounted on the conveyor belt, and a sliding groove for the insertion pin structure to slide is provided on the mounting bar.

[0012] Furthermore, a screw rod is rotatably arranged in the slide groove, and the needle insertion structure includes a needle head, a sliding block fixed to the bottom of the needle head, and a screw sleeve arranged on the sliding block and sleeved on the screw rod.

[0013] Furthermore, the sliding block is arranged in a T-shape.

[0014] Furthermore, an adjusting knob for rotating the screw is provided at one end of the screw.

[0015] Furthermore, the pin structures are symmetrically arranged in two groups on the conveyor belt.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the utility model can continuously process raw materials, greatly improving the stretching processing efficiency of aviation composite materials. In addition, the device avoids the problem of damage to raw materials due to excessive traction during a single stretching through a two-stage stretching method of pre-stretching and stretching. In addition, the spacing between the pin structures of the device can be adjusted, so that the pin structures can stretch raw materials of different widths, so that the device can meet more diverse production and processing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 It is a three-dimensional diagram of an embodiment of the utility model.

[0019] Figure 2 This is a three-dimensional diagram from another angle of an embodiment of the utility model.

[0020] Figure 3 This is a top view of an embodiment of the utility model with the top of the frame removed.

[0021] Figure 4 This is a schematic diagram of the positional relationship between the conveyor belt and the pin structure of one embodiment of the utility model.

[0022] Figure 5 The figure is a schematic diagram of the connection relationship of the pin structure of one embodiment of the utility model.

[0023] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0024] Figure 7 This is a side view of an embodiment of the utility model with the top of the frame removed.

[0025] Figure 8 This is a state diagram of one embodiment of the utility model during stretching.

[0026] Fig. 9 for Figure 8 Enlarged view of point B in the middle.

[0027] In the figure: 1. Frame;

[0028] 2. conveying mechanism, 21. upper conveying roller, 22. lower conveying roller, 23. first motor;

[0029] 3. pre-stretching mechanism, 31. upper stretching roller, 32. lower stretching roller, 33. variable frequency motor;

[0030] 4. stretching mechanism, 42. conveyor belt, 43. second motor, 44. mounting bar, 45. pin structure, 451. needle, 46. slider, 47. slide groove, 48. screw, 481. adjusting knob, 49. screw sleeve. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-9 .

[0033] The utility model aviation composite material stretching machine includes a frame 1 and a conveying mechanism 2 arranged on the frame 1, and also includes: a pre-stretching mechanism 3, which is arranged on the frame 1 and is used to perform preliminary stretching on the raw materials transmitted by the conveying mechanism 2; a stretching mechanism 4, which is used to fully stretch the raw materials after preliminary stretching and convey them to the discharge port, and includes a conveyor belt 42 arranged in the cavity of the frame 1, a plurality of pin structures 45 evenly distributed on the conveyor belt 42, and a second motor 43 for driving the conveyor belt 42. In this design, the raw materials are conveyed to the upper stretching roller 31 and the lower stretching roller 32 through the conveying structure for pre-stretching, and then the stretching is completed under the action of the pin structure 45 of the stretching mechanism 4 to complete the processing.

[0034] In one embodiment, the conveying mechanism 2 includes an upper conveying roller 21 rotatably mounted on the frame 1, a lower conveying roller 22 rotatably mounted on the frame 1 and located below the upper conveying roller 21, and a first motor 23 for driving the lower conveying roller 22. That is, the first motor 23 drives the lower conveying roller 22 to rotate, so that the raw material between the lower conveying roller 22 and the upper conveying roller 21 can be conveyed.

[0035] When setting up the device, a hydraulic cylinder can be fixed on the frame 1, and the protruding end of the hydraulic cylinder can be fixedly connected to the bearing connected to the upper conveying roller 21 or the upper stretching roller 31, so that the height of the upper conveying roller 21 and the upper stretching roller 31 can be adjusted, so that the device can process raw materials of different thicknesses.

[0036] In one embodiment, the pre-stretching mechanism 3 includes an upper stretching roller 31 rotatably mounted on the frame 1 , a lower stretching roller 32 rotatably mounted on the frame 1 and located below the upper stretching roller 31 , and a variable frequency motor 33 for driving the lower stretching roller 32 .

[0037] It should be noted that the variable frequency motor 33 is used to switch the rotation speed of the lower stretching roller 32 between the same as the rotation speed of the lower conveying roller 22 and greater than the rotation speed of the lower conveying roller 22, so that the raw material between the conveying mechanism 2 and the pre-stretching mechanism 3 can be pre-stretched, which is convenient for subsequent stretching operations.

[0038] Specifically, the rotation speed of the second motor 43 is always greater than the rotation speed of the variable frequency motor 33 , and the rotation speed of the variable frequency motor 33 switches between being greater than the rotation speed of the first motor 23 and being equal to the rotation speed of the first motor 23 .

[0039] In one embodiment, the pin structure 45 includes a needle 451 and a slider 46 fixedly installed at the bottom of the needle 451 .

[0040] The needle 451 is used to be inserted into the raw material to drive one end of the raw material to move along with the transmission belt to complete the stretching. Since the raw material has been preliminarily stretched at the pre-stretching structure, the needle 451 is easier to insert into the raw material.

[0041] In one embodiment, a mounting bar 44 for carrying the pin structure 45 is fixedly mounted on the conveyor belt 42. In a specific configuration, the pin structures 45 at both ends of the mounting bar 44 can be fixed to the mounting bar 44 to limit the positions of the remaining pin structures 45. This design allows the pin structure 45 in the middle of the mounting bar 44 to be limited.

[0042] In one embodiment, the mounting bar 44 is provided with a slide groove 47 for the pin structure 45 to slide. The slider 46 is arranged in a T-shape, and the size of the slide groove 47 matches the size of the slider 46. The sliders 46 are respectively rotatably mounted with screw sleeves 49, and the screw sleeves 49 are threadedly connected to the screw rod 48.

[0043] It should be noted that, since the screw sleeve 49 and the slider 46 are rotationally connected, when the screw rod 48 rotates, the screw sleeve 49 makes a spiral rotation relative to the screw rod 48. Since the slider 46 is limited by the slide groove 47, the screw sleeve 49 will drive the slider 46 to move linearly in the slide groove 47.

[0044] In one embodiment, an adjusting knob 481 for rotating the screw rod 48 is fixedly mounted on one end of the screw sleeve 49. In a specific configuration, an inspection port for inspecting and controlling the adjusting knob 481 can be provided on the frame 1 to facilitate subsequent inspection and adjustment.

[0045] In one embodiment, two groups of the pin structures 45 are disposed on the conveyor belt 42 and are symmetrically arranged.

[0046] It should be noted that, since the pin structures 45 are symmetrically arranged, when one set of the pin structures 45 completes the stretching and is about to leave the surface of the raw material and move to the top of the conveyor belt 42, the other set of the pin structures 45 is just inserted into the raw material to stretch the subsequent raw material, so that the device can perform continuous processing, thereby improving the processing efficiency of the device.

[0047] Working principle of the utility model: when using the device, first place one end of the raw material at the conveying mechanism 2 so that it is located between the gap between the upper conveying roller 21 and the lower conveying roller 22, then start the first motor 23, the second motor 43 and the variable frequency motor 33, at this time, one end of the raw material is conveyed to the pre-stretching mechanism 3 under the action of the upper conveying roller 21 and the lower conveying roller 22, then control the variable frequency motor 33 to make its rotation speed greater than the first motor 23, so that the raw material between the conveying mechanism 2 and the pre-stretching mechanism 3 is pre-stretched, then control the variable frequency motor 33 to make its rotation speed consistent with the first motor 23, and convey it at a uniform speed, and then the variable frequency motor 33 reciprocates to change the rotation speed so that it switches between a rotation speed greater than the first motor 23 and a rotation speed equal to the first motor 23, so as to avoid excessive stretching of the raw material and damage caused by continuous high-speed rotation.

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An aviation composite material stretching machine, comprising a frame (1) and a conveying mechanism (2) arranged on the frame (1), characterized in that: Also includes: A pre-stretching mechanism (3), arranged on the frame (1), for performing preliminary stretching on the raw material conveyed by the conveying mechanism (2); The stretching mechanism (4) is used to completely stretch the raw material after preliminary stretching, and comprises a conveyor belt (42) arranged in the cavity of the frame (1), a plurality of groups of pin structures (45) evenly distributed on the conveyor belt (42), and a second motor (43) used to drive the conveyor belt (42) to move.

2. The aviation composite material stretching machine according to claim 1, characterized in that: The conveying mechanism (2) comprises an upper conveying roller (21) rotatably mounted on a frame (1), a lower conveying roller (22) rotatably mounted on the frame (1) and located below the upper conveying roller (21), and a first motor (23) for driving the lower conveying roller (22).

3. The aviation composite material stretching machine according to claim 1, characterized in that: The pre-stretching mechanism (3) comprises an upper stretching roller (31) rotatably mounted on a frame (1), a lower stretching roller (32) rotatably mounted on the frame (1) and located below the upper stretching roller (31), and a variable frequency motor (33) for driving the lower stretching roller (32).

4. The aviation composite material stretching machine according to claim 1, characterized in that: A mounting bar (44) for carrying the insertion pin structure (45) is fixedly mounted on the conveyor belt (42), and a sliding groove (47) for the insertion pin structure (45) to slide is provided on the mounting bar (44).

5. The aviation composite material stretching machine according to claim 4, characterized in that: A screw rod (48) is rotatably arranged in the slide groove (47), and the needle insertion structure (45) comprises a needle head (451), a slider (46) fixed at the bottom of the needle head (451), and a screw sleeve (49) arranged on the slider (46) and sleeved on the screw rod (48).

6. The aviation composite material stretching machine according to claim 5, characterized in that: The sliding block (46) is arranged in a T-shape.

7. The aviation composite material stretching machine according to claim 5, characterized in that: An adjusting knob (481) is provided at one end of the screw rod (48).

8. The aviation composite material stretching machine according to any one of claims 1 to 7, characterized in that: The pin structures (45) are symmetrically arranged in two groups on the conveyor belt (42).

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