Puncturing needle mechanism for curved-surface needle insertion
By designing a needle puncture mechanism with a rotatable indexing turntable and swing head, the problem of difficulty in efficiently inserting carbon fiber boards with large depth curved surfaces is solved, and efficient curved surface pin insertion operation is achieved, which improves production efficiency and the richness of fiber structure.
Patent Information
- Application Number
- CN202421083557.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-17
AI Technical Summary
Under the traditional method, it is difficult to efficiently insert the needle through large-scale needle arrays for the production of large-scale curved surface carbon fiber boards, resulting in inefficiency.
A needle mechanism including a rotatable indexing rotary table, a swing head and an independently lifted needle unit is designed, and a needle mechanism is used to achieve vertical and oblique directions for curved surfaces using multiple prototyping molds and servo motor-screw-slide structures. Insert the pin to ensure precise control of the depth and direction of the needle.
It realizes efficient pin insertion operation on large-depth curved surfaces, improves production efficiency, enhances the three-dimensional richness and connection strength of the fiber structure in the mesh tread, and reduces hardware adjustment and cost.
Smart Images
Figure CN222251273U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of carbon fiber plate manufacturing, in particular to a needle mechanism for curved surface needle insertion. Background Art
[0002] At present, the production of carbon fiber requires prefabricating a multi-fiber mesh by needle punching. The mesh is a fibrous structure with a unidirectional cloth attached to the outside. The purpose of the needle punching is to improve the fiber structure in the mesh. The richer the fiber layers, the higher the product quality. Please refer to the records in CN101503844A.
[0003] The carbon fiber boards produced are not only flat or regular curved surfaces, but also special-shaped curved surfaces. The mesh required for the production of special-shaped curved carbon fiber boards is also similarly special-shaped. Some of the carbon fiber boards produced are large in area. Because the needles are thin, they cannot be made longer due to structural strength. If the curved surface area is large, the depth will also increase. When the needle insertion operation is performed through a large-scale needle array, when the needle insertion depth at the high part of the curved surface reaches the maximum, the needle at the low outer edge has not even been inserted. Therefore, under the traditional method, for large-depth curved surfaces, the needles are generally inserted back and forth through a small-scale needle array, which is inefficient. Utility Model Content
[0004] The utility model provides a needle insertion mechanism for curved surface needles, which solves the problem that it is difficult to perform needle insertion operation through a large-scale needle array for a deep curved surface mesh tire.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a needle mechanism for curved needle insertion, comprising a rotatable first dividing turntable, a plurality of needle insertion stations are arranged circumferentially on the upper edge of the first dividing turntable, each needle insertion station is provided with a first profiling mold, the first profiling mold is used to place the mesh to be inserted with the needle, and is also provided with a liftable swing head, a plurality of independently liftable needle units are arranged at the lower end of the swing head, a second profiling mold is arranged at the upper end of the swing head, and the upper end of each needle unit abuts against the second profiling mold.
[0006] In the preferred solution, a machine platform is provided on one side of the first dividing turntable, a vertical frame which can move toward the center of the first dividing turntable is provided on the machine platform, an L-shaped connecting plate is provided on the vertical frame, a rotatable third dividing turntable is provided on the L-shaped connecting plate, and the rotating end of the third dividing turntable is connected to the swing head.
[0007] In the preferred solution, avoidance holes are provided at each pin insertion station on the first indexing turntable, a second indexing turntable is provided below the first indexing turntable below the swing head, a lifting mechanism is provided on the second indexing turntable, a positioning plate is provided at the upper end of the lifting mechanism, and the positioning plate supports the first profiling mold.
[0008] In the preferred solution, a first positioning hole is provided at the lower end of the positioning plate, and each pin insertion station on the first dividing turntable is provided with a second positioning cone pin, and the second positioning cone pin is inserted into each first positioning hole. The lifting mechanism includes a fixed frame, and a liftable lifting frame is provided on the fixed frame, and a first positioning cone pin is provided on the lifting frame. A second positioning hole is provided at the lower end of the positioning plate, and the first positioning cone pin is inserted into the second positioning hole.
[0009] In the preferred solution, a first fixed plate is provided in the swing head, a positioning recess is provided at the lower end of the first fixed plate, a third magnetic block is provided in the positioning recess, a positioning cone is provided on the upper end surface of the second profiling mold, the positioning cone is inserted into the positioning recess and is adsorbed by the third magnetic block, and threaded top columns are provided at both ends of the first fixed plate, and the lower end of the top column abuts against the outer edge of the second profiling mold.
[0010] In the preferred embodiment, the swing head is also provided with a second fixed plate, and each needle unit is slidably connected to the second fixed plate. Each needle unit includes an outer shell, and the outer shell is provided with a lower stop edge and an upper stop edge. The second fixed plate has an upper spring and a lower spring on both sides, and the two ends of the upper spring respectively abut against the second fixed plate and the upper stop edge, and the two ends of the lower spring respectively abut against the second fixed plate and the lower stop edge.
[0011] In a preferred embodiment, the puncture needle unit comprises an outer shell, a reciprocating electric push rod is arranged in the outer shell, a moving end of the reciprocating electric push rod is connected to a puncture needle positioning sleeve, a plurality of puncture needles are installed in the puncture needle positioning sleeve, and the tips of the puncture needles extend out of the outer shell.
[0012] The beneficial effects of the utility model are as follows: a dividing plate is used to place multiple mesh tires to be inserted with needles at a time, without the need for frequent loading and unloading, thus saving cycle time; a combination of vertical insertion needles and oblique insertion needles is adopted to make the wire connection structure in the mesh tire more three-dimensional and rich, thereby improving the connection strength; a contouring mold is used to adjust the initial extension position of the needle unit, thereby greatly reducing the adjustment mechanism and saving hardware costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0014] Figure 1 It is a schematic diagram of the plane layout of the utility model.
[0015] Figure 2 It is a front schematic diagram of the utility model.
[0016] Figure 3 It is a schematic diagram of the jacking mechanism of the utility model.
[0017] Figure 4 It is a layout diagram of the needle unit at the lower end of the swing head of the utility model.
[0018] Figure 5 It is a schematic diagram of the contour arrangement of the needle units of the utility model.
[0019] Figure 6 It is a schematic diagram of the needle extension of the needle unit of the utility model.
[0020] Figure 7 It is a schematic diagram of the needle retraction of the needle unit of the utility model.
[0021] In the figure: the first indexing turntable 1; the avoidance hole 101; the lifting mechanism 2; the fixed frame 201; the lifting frame 202; the first positioning cone pin 203; the first magnetic block 204; the second indexing turntable 3; the positioning plate 4; the first positioning hole 401; the second positioning cone pin 402; the second magnetic block 403; the second positioning hole 404; the swing head 5; the first fixed plate 501; the top column 502; the positioning recess 503; the third magnetic block 504; the second fixed plate 505; the upper spring 506; the lower spring 507; the needle unit 6; the outer shell 601; the lower retaining edge 602; the upper retaining edge 603; the reciprocating electric push rod 604; the needle positioning sleeve 605; the needle 606; the L-shaped connecting plate 7; the third indexing turntable 8; the stand 9; the machine table 10; the first profiling mold 11; the second profiling mold 12; the positioning cone 1201; the mesh tire to be inserted 13. DETAILED DESCRIPTION
[0022] like Figure 1-7 A needle insertion mechanism for curved needles includes a rotatable first dividing turntable 1, a plurality of needle insertion stations are arranged circumferentially on the first dividing turntable 1, each needle insertion station is provided with a first profiling mold 11, the first profiling mold 11 is used to place a mesh 13 to be inserted with needles, and is also provided with a liftable swing head 5, a plurality of independently liftable needle units 6 are arranged at the lower end of the swing head 5, a second profiling mold 12 is arranged at the upper end of the swing head 5, and the upper end of each needle unit 6 abuts against the second profiling mold 12.
[0023] The second profiling mold 12 is similar in shape to the first profiling mold 11. If the first profiling mold 11 is a convex mold, the second profiling mold 12 is a concave mold. When the upper end of each needle unit 6 is against the mold surface of the second profiling mold 12, the lower end is similar to the curved surface shape of the mesh 13 to be inserted with the needle. Therefore, when the swing head 5 is pressed down and lifted, a curved surface needle movement can be performed on the mesh 13 to be inserted with the needle.
[0024] In the preferred scheme, a machine table 10 is provided on one side of the first dividing turntable 1, and a vertical frame 9 which can move toward the center of the first dividing turntable 1 is provided on the machine table 10, an L-shaped connecting plate 7 is provided on the vertical frame 9, and a rotatable third dividing turntable 8 is provided on the L-shaped connecting plate 7, and the rotating end of the third dividing turntable 8 is connected to the swing head 5.
[0025] The horizontal moving mechanism of the stand 9 and the vertical moving mechanism of the L-shaped connecting plate 7 both adopt a servo motor-screw-slide structure.
[0026] After the vertical needle insertion is completed, the swing head 5 can be swung to adjust the inclination of each needle unit 6, and the horizontal position of the stand 9 and the vertical position of the L-shaped connecting plate 7 can be moved so that the needle insertion direction is toward the curvature center of the mesh tire 13 to be inserted. Since the extension amount of each needle unit 6 has been adjusted to be close to the mesh tire 13 to be inserted according to the second profiling mold 12, the distance between the lower end of each needle unit 6 and the surface of the mesh tire 13 to be inserted is equivalent, and the insertion depth is similar.
[0027] In the preferred solution, an avoidance hole 101 is provided at each pin insertion station on the first dividing turntable 1, a second dividing turntable 3 is provided below the first dividing turntable 1 below the swing head 5, a lifting mechanism 2 is provided on the second dividing turntable 3, a positioning plate 4 is provided at the upper end of the lifting mechanism 2, and the positioning plate 4 supports the first profiling mold 11.
[0028] The first indexing turntable 1, the second indexing turntable 3 and the third indexing turntable 8 are all servo turntables, which can adjust and record the rotation angle.
[0029] When the mesh 13 to be inserted on the first dividing turntable 1 rotates to below the swing head 5, the lifting mechanism 2 passes through the avoidance hole 101 and lifts up the first profiling mold 11. After the vertical pin insertion process is completed, the swing head 5 swings an angle and cooperates with the movement of the L-shaped connecting plate 7 and the stand 9 to perform oblique pin insertion. Then the second dividing turntable 3 drives the mesh 13 to be inserted to rotate horizontally at an angle, and the swing head 5 performs another oblique pin insertion. Then the mesh 13 to be inserted rotates again, and then the pin is inserted obliquely until the pin insertion process is completely completed.
[0030] In the preferred embodiment, a first positioning hole 401 is provided at the lower end of the positioning plate 4, and each pin insertion station on the first dividing turntable 1 is provided with a second positioning cone pin 402, and the second positioning cone pin 402 is inserted into each first positioning hole 401. The lifting mechanism 2 includes a fixed frame 201, and a liftable lifting frame 202 is provided on the fixed frame 201, and a first positioning cone pin 203 is provided on the lifting frame 202. A second positioning hole 404 is provided at the lower end of the positioning plate 4, and the first positioning cone pin 203 is inserted into the second positioning hole 404.
[0031] A lifting cylinder is provided on the fixed frame 201 , and a cylinder rod is connected to the lifting frame 202 . A guide rod is provided at the lower end of the lifting frame 202 , which is slidably connected with a guide sleeve of the fixed frame 201 .
[0032] A first magnetic block 204 is disposed at the upper end of the first positioning cone pin 203 , and a second magnetic block 403 is disposed at the upper end of the second positioning cone pin 402 , which are used to adsorb the positioning plate 4 to make the positioning more stable.
[0033] The first profiling die 11 and the positioning plate 4 can be bonded.
[0034] In the preferred embodiment, a first fixed plate 501 is provided in the swing head 5, a positioning recess 503 is provided at the lower end of the first fixed plate 501, a third magnetic block 504 is provided in the positioning recess 503, a positioning cone 1201 is provided on the upper end surface of the second profiling mold 12, the positioning cone 1201 is inserted into the positioning recess 503 and is adsorbed by the third magnetic block 504, and threaded top columns 502 are provided at both ends of the first fixed plate 501, and the lower end of the top column 502 rests against the outer edge of the second profiling mold 12.
[0035] The magnet, the top column 502 and the positioning mechanism enable the second profiling mold 12 to be stably mounted on the swing head 5, and can be quickly disassembled and replaced to match the shape of the mesh tire 13 to be inserted with needles.
[0036] In the preferred embodiment, the swing head 5 is further provided with a second fixed plate 505, and each needle unit 6 is slidably connected to the second fixed plate 505. Each needle unit 6 includes an outer shell 601, and the outer shell 601 is provided with a lower stop edge 602 and an upper stop edge 603. The second fixed plate 505 has an upper spring 506 and a lower spring 507 on both sides. The two ends of the upper spring 506 respectively abut against the second fixed plate 505 and the upper stop edge 603, and the two ends of the lower spring 507 respectively abut against the second fixed plate 505 and the lower stop edge 602.
[0037] The upper end of the outer shell 601 is an arc-shaped contact surface, which is in close contact with the lower end surface of the second profiling mold 12 .
[0038] The double spring structure enables the needle unit 6 to maintain a balanced position. When the second profiling die 12 is installed, the second profiling die 12 squeezes the needle unit 6 so that the lower end forms a profiling curved surface.
[0039] In a preferred embodiment, the puncture needle unit 6 includes an outer shell 601, in which a reciprocating electric push rod 604 is provided, and the moving end of the reciprocating electric push rod 604 is connected to a puncture needle positioning sleeve 605, in which a plurality of puncture needles 606 are installed, and the tips of the puncture needles 606 extend out of the outer shell 601.
[0040] The reciprocating electric push rod 604 can drive each needle 606 to reciprocate and retract. Therefore, when the lower end of the swing head 5 is close to the surface of the mesh 13 to be inserted, each needle unit 6 can perform the needle insertion work on the mesh 13 to be inserted multiple times in a short period of time, making the internal connection structure of the mesh 13 to be inserted richer.
[0041] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.
Claims
1. A needle mechanism for curved needle insertion, characterized by: The invention comprises a rotatable first indexing turntable (1), a plurality of needle insertion stations are arranged on the circumferential direction of the first indexing turntable (1), each needle insertion station is provided with a first profiling mold (11), the first profiling mold (11) is used to place a web (13) to be inserted with needles, and a liftable swing head (5) is also provided, a plurality of independently liftable needle units (6) are arranged at the lower end of the swing head (5), a second profiling mold (12) is arranged at the inner upper end of the swing head (5), and the upper end of each needle unit (6) abuts against the second profiling mold (12).
2. The needle mechanism for curved needle insertion according to claim 1, characterized in that: A machine table (10) is provided on one side of the first indexing turntable (1), a stand (9) movable toward the center of the first indexing turntable (1) is provided on the machine table (10), an L-shaped connecting plate (7) is provided on the stand (9), a rotatable third indexing turntable (8) is provided on the L-shaped connecting plate (7), and a rotating end of the third indexing turntable (8) is connected to the swing head (5).
3. The needle mechanism for curved needle insertion according to claim 2, characterized in that: A avoidance hole (101) is provided at each pin insertion station on the first indexing turntable (1), a second indexing turntable (3) is provided below the first indexing turntable (1) below the swing head (5), a jacking mechanism (2) is provided on the second indexing turntable (3), a positioning plate (4) is provided at the upper end of the jacking mechanism (2), and the positioning plate (4) supports the first profiling mold (11).
4. The needle mechanism for curved needle insertion according to claim 3, characterized in that: A first positioning hole (401) is provided at the lower end of the positioning plate (4), and each pin insertion station on the first indexing turntable (1) is provided with a second positioning cone pin (402), and the second positioning cone pin (402) is inserted into each first positioning hole (401). The lifting mechanism (2) comprises a fixed frame (201), and a lift frame (202) is provided on the fixed frame (201), and a first positioning cone pin (203) is provided on the lift frame (202). A second positioning hole (404) is provided at the lower end of the positioning plate (4), and the first positioning cone pin (203) is inserted into the second positioning hole (404).
5. The needle mechanism for curved needle insertion according to claim 1, characterized in that: A first fixing plate (501) is provided inside the swing head (5), a positioning recess (503) is provided at the lower end of the first fixing plate (501), a third magnetic block (504) is provided inside the positioning recess (503), a positioning cone (1201) is provided on the upper end surface of the second profiling die (12), the positioning cone (1201) is inserted into the positioning recess (503) and is adsorbed by the third magnetic block (504), and threaded top columns (502) are provided at both ends of the first fixing plate (501), the lower end of the top column (502) abuts against the outer edge of the second profiling die (12).
6. The needle mechanism for curved needle insertion according to claim 5, characterized in that: The swing head (5) is further provided with a second fixing plate (505), each puncture needle unit (6) is slidably sleeved with the second fixing plate (505), each puncture needle unit (6) comprises an outer shell (601), the outer shell (601) is provided with a lower stop edge (602) and an upper stop edge (603), an upper spring (506) and a lower spring (507) are respectively provided on both sides of the second fixing plate (505), two ends of the upper spring (506) respectively abut against the second fixing plate (505) and the upper stop edge (603), and two ends of the lower spring (507) respectively abut against the second fixing plate (505) and the lower stop edge (602).
7. The needle mechanism for curved needle insertion according to claim 1, characterized in that: The pricking needle unit (6) comprises an outer shell (601), a reciprocating electric push rod (604) is arranged inside the outer shell (601), a moving end of the reciprocating electric push rod (604) is connected to a pricking needle positioning sleeve (605), a plurality of pricking needles (606) are installed inside the pricking needle positioning sleeve (605), and the tips of the pricking needles (606) extend out of the outer shell (601).