Needling device for carbon-carbon crucible preforms

Abstract

This invention discloses a needle-punching device for carbon-carbon crucible preforms. A linear drive mechanism drives a needle plate in a linear reciprocating motion, causing the needle to pass through a needle hole in the base plate and protrude a certain length onto the base plate or retract into the installation space, thereby achieving needle punching of the crucible preform. Therefore, the needle-punching device of this embodiment can be miniaturized, lightweight, and integrated. Furthermore, the needle-punching device of this embodiment is an independent unit. Through the pre-reserved connection holes on the housing, it can be installed on a handheld device for handheld operation or integrated with automated robotic arms for automated operation, thereby improving the operational performance and application range of the needle-punching device, and thus adapting to the production of carbon-carbon crucible preforms of different sizes, shapes, and densities. Moreover, the housing of the needle-punching device of this embodiment adopts a sealed structure, which can isolate environmental pollution.

Description

Technical Field

[0001] This invention relates to the field of carbon fiber crucible preparation technology, and in particular to a needle punching device for carbon-carbon crucible preforms. Background Technology

[0002] Currently, needle punching for carbon-carbon crucible preforms is mostly done manually, which suffers from numerous drawbacks, including harsh working conditions, high labor intensity, low efficiency, inconsistent quality, and poor needle punching results. With the increasing diversity, structural complexity, and variety of carbon-carbon crucibles, the existing manual needle punching methods are becoming increasingly inadequate for industry needs.

[0003] Therefore, it is evident that whether an improved needle-punching device for carbon-carbon crucible preforms can be provided based on the shortcomings of existing technologies has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art and provide a needle punching device for carbon-carbon crucible preforms.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A needle-punching device for carbon-carbon crucible preforms, comprising:

[0007] The housing includes a base plate, a front support and a rear support, the front support and the rear support are arranged opposite to each other, the interior of the housing forms an installation space, the base plate is provided with pin holes, and the base plate also functions as a cotton stripping board;

[0008] A needle plate is disposed within the installation space;

[0009] A needle is disposed on the side of the needle plate near the base plate, and the position of the needle corresponds to the position of the needle through hole;

[0010] A linear drive mechanism is disposed within the installation space and mounted on the front support; the linear drive mechanism is connected to the needle plate.

[0011] The linear drive mechanism is configured to drive the needle plate to perform linear reciprocating motion, so as to drive the needle through the needle hole to protrude to the base plate or retract into the installation space.

[0012] Preferably, the linear drive mechanism includes:

[0013] The drive stator is fixed to the front support;

[0014] A drive mover is slidably disposed on the drive stator, and the drive mover is configured to perform reciprocating linear motion relative to the drive stator;

[0015] The first guide rail is fixed to the front support and is disposed on one side of the drive stator. The extension direction of the first guide rail is parallel to the movement direction of the drive rotor.

[0016] The second guide rail is fixed to the front support and is located on the other side of the drive stator. The extension direction of the second guide rail is parallel to the movement direction of the drive rotor.

[0017] The first slider is connected to the driving actuator and is slidably disposed on the first guide rail;

[0018] The second slider is connected to the driving actuator and is slidably disposed on the second guide rail;

[0019] The needle-piercing connecting plate is connected on one side to the driving actuator, the first slider, and the second slider, and one end of the needle-piercing connecting plate is connected to the needle plate.

[0020] Preferably, the linear drive mechanism further includes:

[0021] The third slider is connected to the driving actuator and is slidably disposed on the first guide rail;

[0022] The fourth slider is connected to the driving actuator and is slidably disposed on the second guide rail;

[0023] The third and fourth sliders are connected to one side of the needle-punching connecting plate.

[0024] Preferably, the linear drive mechanism further includes:

[0025] The first upper limit block is disposed at the upper end of the first guide rail;

[0026] The first lower limit block is located at the lower end of the first guide rail;

[0027] The second upper limit block is set at the upper end of the second guide rail;

[0028] The second lower limit block is located at the lower end of the second guide rail.

[0029] Preferably,

[0030] The needle-punched connecting plate is provided with a first detection part and a second detection part on the side near the rear support.

[0031] The linear drive mechanism further includes:

[0032] A photoelectric trigger switch is disposed in the installation space and on the rear support, for detecting and triggering the movement of the drive mover relative to the drive stator;

[0033] The first mounting base is disposed within the mounting space and is symmetrically arranged on the rear support with respect to the first guide rail;

[0034] An upper photoelectric limit switch is provided at the upper end of the first mounting base to detect the initial position of the first detection unit;

[0035] A lower photoelectric limit switch is located at the lower end of the first mounting base and is used to detect the end position of the first detection unit.

[0036] Preferably, the linear drive mechanism further includes:

[0037] The second mounting base is disposed within the mounting space and is symmetrically arranged on the rear support with respect to the second guide rail;

[0038] A photoelectric zero-position adjustment switch is provided on the second mounting base and is used to detect the second detection unit for zero-position calibration;

[0039] A grid ruler is mounted on the second mounting base;

[0040] The reading head is located on the side of the needle-punched connecting plate near the rear support, corresponding to the position of the grid ruler, and is used to read the grid ruler data to determine the movement position.

[0041] Preferably, the needle-punched connecting plate includes:

[0042] A vertical plate is connected to the driving actuator, the first slider, and the second slider;

[0043] A flat plate connected to the needle plate;

[0044] A reinforcing plate is disposed at the connection between the vertical plate and the flat plate. The extension direction of the reinforcing plate is perpendicular to the extension direction of the vertical plate. The lower end of the reinforcing plate is fixedly connected to the flat plate, and the vertical plate is fixedly connected to the reinforcing plate.

[0045] Preferably, the needle-punched connecting plate has several weight-reducing holes.

[0046] Preferably, the front support includes a left side wall, a right side wall, and a connecting part connecting the left side wall and the right side wall. The connecting part has a mounting groove in the middle, the drive stator is mounted in the mounting groove, and weight-reducing wiring holes and assembly connection holes are provided on both sides of the mounting groove.

[0047] The rear support has a similar structure to the front support.

[0048] Preferably, it also includes a cover plate, which is provided on the top of the front support and the rear support. The cover plate has an electrical wire opening corresponding to the position of the weight reduction wiring hole and a cover plate through hole corresponding to the position of the assembly connection hole. The cover plate has a downward protruding snap-fit ​​part around the electrical wire opening, and the snap-fit ​​part is used to snap into the weight reduction wiring hole.

[0049] Preferably, the base plate has a through hole corresponding to the position of the assembly connection hole, and a protrusion is formed on the side of the base plate near the needle plate, the protrusion being in contact with the inner wall of the installation space.

[0050] Preferably, the system further includes connecting columns, which pass sequentially through the cover plate through-hole, the assembly connection hole, and the bottom plate through-hole to connect and assemble the cover plate, the front support, the rear support, and the bottom plate into the housing.

[0051] Preferably, the housing has a connection hole for mounting the needle device to a predetermined position.

[0052] A handheld needle punching machine includes the aforementioned needle punching device for carbon-carbon crucible preforms, the handheld needle punching machine including a handheld part, the needle punching device being mounted on the handheld part.

[0053] A needle-punching robot includes the aforementioned needle-punching device for carbon-carbon crucible preforms, the needle-punching robot including a robotic arm, the needle-punching device being mounted on the robotic arm.

[0054] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0055] The positive and progressive effects of this invention are as follows: The needle-punching device for carbon-carbon crucible preforms of this invention uses a linear drive mechanism to drive the needle plate in a linear reciprocating motion, so that the needle passes through the needle through-hole on the base plate and protrudes to a certain length of the base plate or retracts into the installation space, thereby realizing the needle-punching of the crucible preform. Therefore, the needle-punching device of this embodiment can be miniaturized, lightweight, and integrated. Furthermore, the needle-punching device of this embodiment is an independent unit. Through the connection holes reserved on the housing, it can be installed on a handheld device for handheld operation, or it can be integrated with automated robotic arms for automated operation, thereby improving the operational performance and application range of the needle-punching device, and thus adapting to the production of carbon-carbon crucible preforms of different sizes, shapes, and densities. In addition, the housing of the needle-punching device of this embodiment adopts a sealed structure, which can isolate environmental pollution. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the needle-punching device of a preferred embodiment of the present invention, with the rear support removed.

[0057] Figure 2 This is a partial structural schematic diagram of the acupuncture device according to a preferred embodiment of the present invention.

[0058] Figure 3 This is a schematic diagram of the external structure of the acupuncture device according to a preferred embodiment of the present invention.

[0059] Figure 4 This is a schematic diagram of the front and rear uprights according to a preferred embodiment of the present invention.

[0060] Figure 5 This is a schematic diagram of the structure of the needle-punched connecting plate according to a preferred embodiment of the present invention.

[0061] Figure 6 This is a schematic diagram of the cover plate according to a preferred embodiment of the present invention.

[0062] Figure 7 This is a schematic diagram of the structure of the base plate according to a preferred embodiment of the present invention.

[0063] Explanation of reference numerals in the attached figures:

[0064] Casing 1

[0065] Base plate 11

[0066] Bottom plate through hole 112

[0067] Protrusion 113

[0068] Front support 12

[0069] Left side wall 121

[0070] Right side wall 122

[0071] Connecting part 123

[0072] Mounting slot 1231

[0073] Weight reduction wiring hole 1232

[0074] Assembly connection hole 1233

[0075] Rear support 14

[0076] Cover plate 15

[0077] Cover plate through hole 151

[0078] Wire port 152

[0079] Connector 153

[0080] Installation space 16

[0081] Needle plate 2

[0082] 3 needles

[0083] Linear drive mechanism 4

[0084] Drive stator 41

[0085] Driven motor 42

[0086] First guide rail 43

[0087] Second guide rail 44

[0088] First slider 45

[0089] Second slider 46

[0090] Third slider 47

[0091] Fourth slider 48

[0092] Needle-punched connecting plate 49

[0093] First Inspection Department 491

[0094] Second Inspection Department 492

[0095] Weight reduction hole 493

[0096] Vertical board 494

[0097] Tablet 495

[0098] First upper limit block 401

[0099] First lower limit block 402

[0100] Second upper limit block 403

[0101] Second lower limit block 404

[0102] Photoelectric trigger switch 405

[0103] First mounting base 406

[0104] Shangguang Optoelectronic Limit Switch 407

[0105] Lower photoelectric limit switch 408

[0106] Second mounting bracket 409

[0107] 4010 photoelectric zero-position adjustment switch

[0108] Grid ruler 4011

[0109] Read head 4012

[0110] Reinforcing plate 4013

[0111] Connecting column 5 Detailed Implementation

[0112] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0113] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0114] It should be noted that in the claims and specification of this patent, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0115] like Figures 1-7 As shown, this embodiment discloses a needle-punching device for carbon-carbon crucible preforms, which includes a housing 1, a needle plate 2, a needle 3, and a linear drive mechanism 4.

[0116] like Figure 3As shown, in this embodiment, the housing 1 is rectangular, but it is not limited to this in other alternative embodiments. The housing 1 includes a cover plate 15, a bottom plate 11, a front support 12 and a rear support 14. An installation space 16 is formed inside the housing 1. The housing 1 has a pre-drilled connection hole to facilitate the installation of the needle device to a predetermined position. The bottom plate 11 has a plurality of needle through holes (not shown in the figure) for the needles 3 to pass through, and the bottom plate also functions as a thin cotton stripping board.

[0117] Specifically, such as Figure 4 As shown, the rear support 14 has a similar structure to the front support 12, except for some differences in dimensions. They are symmetrically arranged and together enclose and splice to form the sidewall of the housing 1. Both the front support 12 and the rear support 14 include a left side wall 121, a right side wall 122, and a connecting portion 123 connecting the left side wall 121 and the right side wall 122. A mounting groove 1231 is provided in the middle of the connecting portion 123, and weight-reducing wiring holes 1232 and assembly connection holes 1233 are provided on both sides of the mounting groove 1231. The weight-reducing wiring holes 1232 not only allow for the routing of wires electrically connected to the linear drive mechanism 4 but also reduce the weight of the front support 12 and the rear support 14.

[0118] like Figure 6 As shown, the cover plate 15 is installed on the top of the front support 12 and the rear support 14, covering the installation space 16. The cover plate 15 has four corner openings 152 for power supply cables to enter, and downwardly protruding latching portions 153 are formed around the cable openings 152. These latching portions 153 are used to engage with the weight-reducing cable routing holes 1232, facilitating the initial latching and positioning of the cover plate 15 onto the front support 12 and the rear support 14. Specifically, in this embodiment, only two cable openings 152 located at opposite corners are open, while the other two are closed, but latching portions 153 are provided at all four corners. In other embodiments, the number of openings can be flexibly selected according to actual needs.

[0119] Furthermore, the four corners of the cover plate 15 are provided with cover plate through holes 151 corresponding to the positions of the assembly connection holes 1233.

[0120] like Figure 7 As shown, the four corners of the base plate 11 are also provided with base plate through holes 112 corresponding to the positions of the assembly connection holes 1233. The needle-punching device for carbon-carbon crucible preforms in this embodiment also includes four connecting columns 5. The four connecting columns 5 pass through the cover plate through holes 151, assembly connection holes 1233 and base plate through holes 112 located at the four corners in sequence, thereby connecting and assembling the cover plate 15, front support 12, rear support 14 and base plate 11 into a shell 1, which greatly improves the structural strength of the shell 1. In addition, the installation space 16 in the middle of the shell 1 is a closed structure, which can reduce the amount of carbon dust in the air during the needle-punching process of the crucible, which is more conducive to healthy production.

[0121] A protrusion 113 is formed on the side of the base plate 11 near the needle plate 2. The protrusion 113 fits against the inner wall of the mounting space 16 (i.e. the inner wall of the front support 12 and the rear support 14), thereby further improving the sealing of the mounting space 16.

[0122] like Figure 1 As shown, the needle plate 2 is set in the installation space 16. Several needles 3 are set on the side of the needle plate 2 near the bottom plate 11. The positions of the needles 3 and the needle holes are corresponding. The needles 3 can be set on the needle plate 2 according to specific rules according to actual needs. The needles 3 are provided with barbs to strengthen the hooking of carbon fibers and improve the structural strength of the crucible preform.

[0123] A linear drive mechanism 4 is disposed within the mounting space 16 and mounted on the front support 12. The linear drive mechanism 4 is connected to the needle plate 2. The linear drive mechanism 4 is configured to drive the needle plate 2 to perform linear reciprocating motion, thereby driving the needle 3 to pass through the needle hole and protrude to the base plate 11 or retract into the mounting space 16.

[0124] Specifically, the linear drive mechanism 4 in this embodiment includes a drive stator 41, a drive mover 42, a first guide rail 43, a second guide rail 44, a first slider 45, a second slider 46, a third slider 47, a fourth slider 48, and a needle-punching connecting plate 49.

[0125] The drive stator 41 is fixedly installed in the mounting groove 1231 of the front support 12. The drive rotor 42 is slidably disposed on the drive stator 41 and is configured to reciprocate linearly relative to the drive stator 41. A first guide rail 43 is fixed to the front support 12 and disposed on one side of the drive stator 41, with the extension direction of the first guide rail 43 parallel to the movement direction of the drive rotor 42. A second guide rail 44 is fixed to the front support 12 and disposed on the other side of the drive stator 41, with the extension direction of the second guide rail 44 parallel to the movement direction of the drive rotor 42.

[0126] The first slider 45 is connected to the driving actuator 42 and slidably disposed on the first guide rail 43. The second slider 46 is connected to the driving actuator 42 and slidably disposed on the second guide rail 44. The third slider 47 is connected to the driving actuator 42 and slidably disposed on the first guide rail 43. The fourth slider 48 is connected to the driving actuator 42 and slidably disposed on the second guide rail 44. The third slider 47 and the fourth slider 48 are connected to one side of the needle-punching connecting plate 49.

[0127] One side of the needle-punch connecting plate 49 is connected to the drive actuator 42, the first slider 45, the second slider 46, the third slider 47, and the fourth slider 48, and one end of the needle-punch connecting plate 49 is connected to the needle plate 2.

[0128] In this embodiment, the reciprocating linear motion of the drive rotor 42 relative to the drive stator 41 is converted into the reciprocating linear motion of the needle plate 2, and further into the motion of the needle 3 entering and exiting through the needle through-hole on the base plate 11 to puncture the crucible preform. This allows for a lighter needle-punching device, thereby improving its operational performance and application range, and enabling it to adapt to the production of carbon fiber crucibles of different sizes, shapes, and densities. The use of a slider and guide rail in conjunction with the drive rotor 42 and the needle-punching connecting plate 49 greatly improves the stability of the motion.

[0129] Furthermore, the linear drive mechanism 4 in this embodiment also includes a first upper limit block 401, a first lower limit block 402, a second upper limit block 403, and a second lower limit block 404.

[0130] The first upper limit block 401 is disposed at the upper end of the first guide rail 43, and the first lower limit block 402 is disposed at the lower end of the first guide rail 43 to ensure that the first slider 45 and the third slider 47 will not fall off the first guide rail 43. The second upper limit block 403 is disposed at the upper end of the second guide rail 44, and the second lower limit block 404 is disposed at the lower end of the second guide rail 44 to ensure that the second slider 46 and the fourth slider 48 will not fall off the second guide rail 44.

[0131] Furthermore, such as Figure 1 and 2 As shown, the linear drive mechanism 4 in this embodiment also includes a photoelectric trigger switch 405, a first mounting base 406, an upper photoelectric limit switch 407, and a lower photoelectric limit switch 408. Furthermore, the needle-punched connecting plate 49 in this embodiment is provided with a first detection unit 491 and a second detection unit 492 on the side near the rear support 14, capable of passing through the upper photoelectric limit switch 407 and the lower photoelectric limit switch 408 and being detected.

[0132] A photoelectric trigger switch 405 is disposed within the mounting space 16 and mounted on the rear support 14. It is used to detect and trigger the linear reciprocating motion of the drive rotor 42 relative to the drive stator 41. When the photoelectric trigger switch 405 detects a specific light signal, it sends a signal to the control system, instructing the linear drive mechanism 4 to start or stop its movement. This triggering mechanism can be implemented through external input signals or internal position control algorithms, achieving precise motion triggering and control. The photoelectric trigger switch 405 can be used to detect the position of the drive rotor 42. When the drive rotor 42 passes the photoelectric trigger switch 405, it detects a change in the light signal, thereby determining the position information of the drive rotor 42.

[0133] The first mounting base 406 is disposed within the mounting space 16 and is symmetrically disposed on the rear support 14 with the first guide rail 43.

[0134] The upper photoelectric limit switch 407 is located at the upper end of the first mounting base 406 and is used to detect the initial position of the first detection unit 491. The lower photoelectric limit switch 408 is located at the lower end of the first mounting base 406 and is used to detect the end position of the drive actuator 42.

[0135] When the first detection unit 491 on the needle-piercing connection plate 49 passes the upper photoelectric limit switch 407, the linear drive mechanism 4 will stop moving, thus achieving the starting position limit. When the first detection unit 491 passes the lower photoelectric limit switch 408, the linear drive mechanism 4 will also stop moving, thus achieving the ending position limit.

[0136] By using upper and lower limit photoelectric switches, the linear drive mechanism 4 can be ensured to always stop at the predetermined position during operation, avoiding over-limit movement and thus ensuring the safety and stability of the equipment. In addition, the upper and lower limit photoelectric switches can also be used to detect faults. When the needle-piercing connection plate 49 moves abnormally or is misaligned, the signals from the upper and lower photoelectric switches can be used to identify and stop the motor's movement in time to prevent equipment damage or accidents.

[0137] Furthermore, the linear drive mechanism 4 in this embodiment also includes a second mounting base 409, a photoelectric zero-position adjustment switch 4010, a grid ruler 4011, and a reading head 4012.

[0138] The second mounting base 409 is disposed within the mounting space 16 and is symmetrically disposed on the rear support 14 with the second guide rail 44.

[0139] A photoelectric zero-position adjustment switch 4010 is mounted on the second mounting base 409 and is used to detect the second detection unit 492 for zero-position calibration. During use, various factors may cause slight errors in the zero-position of the linear motion mechanism. The photoelectric zero-position adjustment switch 4010 can be adjusted to perform zero-position calibration. By determining a suitable zero-position, the linear motor can accurately correspond to the zero-position mark when stationary, improving the accuracy of the motion system.

[0140] A scale 4011 is mounted on the second mounting base 409, and a reading head 4012 is located on the side of the needle-piercing connecting plate 49 near the rear support 14. The reading head 4012 moves integrally with the needle-piercing connecting plate 49. The reading head 4012 corresponds to the scale 4011 and is used to read the scale 4011. Position measurement is achieved between the two through optical or magnetic field principles to monitor whether the needle-piercing connecting plate 49 accurately reaches the predetermined position. By reading the output signal of the scale 4011, the precise position of the needle-piercing connecting plate 49 can be determined, thus achieving accurate positioning control. The scale 4011 and the reading head 4012, working together, can also calculate the speed of the needle-piercing connecting plate 49 by measuring changes in time and distance. Through the feedback speed information, closed-loop control of the speed of the needle-piercing connecting plate 49 can be achieved, enabling the linear drive mechanism 4 to operate more stably.

[0141] Furthermore, such as Figure 2 and Figure 5 As shown, the needle-punched connecting plate 49 in this embodiment includes a vertical plate 494, a flat plate 495, and three integrally formed reinforcing plates 4013.

[0142] The vertical plate 494 is connected to the drive actuator 42, the first slider 45, the second slider 46, the third slider 47, and the fourth slider 48. The flat plate 495 is connected to the needle plate 2. A reinforcing plate 4013 is disposed at the connection between the vertical plate 494 and the flat plate 495. The extension direction of the reinforcing plate 4013 is perpendicular to the extension direction of the vertical plate 494. The lower end of the reinforcing plate 4013 is fixedly connected to the flat plate 495. A slot is provided on the reinforcing plate 4013, and the vertical plate 494 is fixedly connected to the reinforcing plate 4013 through the slot.

[0143] In this embodiment, the above-described structural form can greatly improve the structural strength of the needle-punched connecting plate 49.

[0144] In other alternative embodiments, other numbers of reinforcing plates 4013 may be provided. The reinforcing plates 4013 may also be split, and their arrangement is not limited to the form shown in this embodiment.

[0145] Furthermore, the needle-punching connecting plate 49 of this embodiment is provided with a plurality of weight-reducing holes 493, thereby further reducing the weight of the needle-punching device and achieving better weight reduction. At the same time, the needle-punching connecting plate 49 is also provided with holes for connecting the drive actuator 42 and the first slider 45, the second slider 46, the third slider 47 and the fourth slider 48.

[0146] The needle-punching device for carbon-carbon crucible preforms in this embodiment uses a linear drive mechanism 4 to drive the needle plate 2 in a linear reciprocating motion, thereby driving the needles 3 to pass through the needle holes and protrude a certain length to the bottom plate 11 or retract into the installation space 16, thus realizing the needle-punching of the crucible preforms. Therefore, the needle-punching device of this embodiment can be miniaturized and lightweight. Furthermore, the needle-punching device of this embodiment is an independent unit; through the pre-reserved connection holes on the housing 1, it can be installed on a handheld device for handheld operation, or integrated with automated robotic arms for automated operation, thereby improving the operational performance and application range of the needle-punching device, and thus adapting to the production of carbon fiber crucibles of different sizes, shapes, and densities. In addition, the housing 1 of the needle-punching device in this embodiment adopts a sealed structure, which can isolate environmental pollution.

[0147] This embodiment also discloses a handheld needle punching machine, which includes the needle punching device for carbon-carbon crucible preforms described above. The handheld needle punching machine includes a handheld part, and the needle punching device is connected to the handheld part through a connecting hole.

[0148] This embodiment also discloses a needle-punching machine robot, which includes the above-mentioned needle-punching device for carbon-carbon crucible preforms. The needle-punching machine robot includes a robotic arm, and the needle-punching device is connected to the robotic arm through a connecting hole.

Claims

1. A needle-punching device for carbon-carbon crucible preforms, characterized in that, include: The housing includes a base plate, a front support and a rear support, the front support and the rear support are arranged opposite to each other, the interior of the housing forms an installation space, the base plate is provided with pin holes, and the base plate also functions as a cotton stripping board; A needle plate is disposed within the installation space; A needle is disposed on the side of the needle plate near the base plate, and the position of the needle corresponds to the position of the needle through hole; A linear drive mechanism is disposed within the installation space and mounted on the front support; the linear drive mechanism is connected to the needle plate. The linear drive mechanism is configured to drive the needle plate to perform linear reciprocating motion, so as to drive the needle to pass through the needle hole and protrude to the base plate for a certain length or retract into the installation space. The linear drive mechanism includes: The drive stator is fixed to the front support; A drive mover is slidably disposed on the drive stator, and the drive mover is configured to perform reciprocating linear motion relative to the drive stator; The first guide rail is fixed to the front support and is disposed on one side of the drive stator. The extension direction of the first guide rail is parallel to the movement direction of the drive rotor. The second guide rail is fixed to the front support and is located on the other side of the drive stator. The extension direction of the second guide rail is parallel to the movement direction of the drive rotor. The first slider is connected to the driving actuator and is slidably disposed on the first guide rail; The second slider is connected to the driving actuator and is slidably disposed on the second guide rail; The needle-piercing connecting plate is connected on one side to the driving actuator, the first slider, and the second slider, and one end of the needle-piercing connecting plate is connected to the needle plate. The linear drive mechanism further includes: The third slider is connected to the driving actuator and is slidably disposed on the first guide rail; The fourth slider is connected to the driving actuator and is slidably disposed on the second guide rail; The third slider and the fourth slider are connected to one side of the needle-punching connecting plate; The linear drive mechanism further includes: The first upper limit block is disposed at the upper end of the first guide rail; The first lower limit block is located at the lower end of the first guide rail; The second upper limit block is set at the upper end of the second guide rail; The second lower limit block is located at the lower end of the second guide rail; The needle-punched connecting plate is provided with a first detection part and a second detection part on the side near the rear support. The linear drive mechanism further includes: A photoelectric trigger switch is disposed in the installation space and on the rear support, for detecting and triggering the movement of the drive mover relative to the drive stator; The first mounting base is disposed within the mounting space and is symmetrically arranged on the rear support with respect to the first guide rail; An upper photoelectric limit switch is provided at the upper end of the first mounting base to detect the initial position of the first detection unit; A lower photoelectric limit switch is located at the lower end of the first mounting base and is used to detect the end position of the first detection unit. The linear drive mechanism further includes: The second mounting base is disposed within the mounting space and is symmetrically arranged on the rear support with respect to the second guide rail; A photoelectric zero-position adjustment switch is provided on the second mounting base and is used to detect the second detection unit for zero-position calibration; A grid ruler is mounted on the second mounting base; The reading head is located on the side of the needle-punched connecting plate near the rear support, corresponding to the position of the grid ruler, and is used to read the grid ruler data to determine the movement position.

2. The needle-punching device for carbon-carbon crucible preforms as described in claim 1, characterized in that, The needle-punched connecting plate includes: A vertical plate is connected to the driving actuator, the first slider, and the second slider; A flat plate connected to the needle plate; A reinforcing plate is disposed at the connection between the vertical plate and the flat plate. The extension direction of the reinforcing plate is perpendicular to the extension direction of the vertical plate. The lower end of the reinforcing plate is fixedly connected to the flat plate, and the vertical plate is fixedly connected to the reinforcing plate.

3. The needle-punching device for carbon-carbon crucible preforms as described in claim 1, characterized in that, The needle-punched connecting plate has several weight-reducing holes.

4. The needle-punching device for carbon-carbon crucible preforms as described in claim 1, characterized in that, The front support includes a left side wall, a right side wall, and a connecting part connecting the left side wall and the right side wall. The connecting part has a mounting groove in the middle, and the drive stator is installed in the mounting groove. The mounting groove has weight-reducing wiring holes and assembly connection holes on both sides. The rear support has a similar structure to the front support.

5. The needle-punching device for carbon-carbon crucible preforms as described in claim 4, characterized in that, It also includes a cover plate, which is installed on the top of the front support and the rear support. The cover plate has an electrical wire opening corresponding to the position of the weight reduction wiring hole and a cover plate through hole corresponding to the position of the assembly connection hole. The cover plate has a downward protruding snap-fit ​​part around the electrical wire opening, which is used to snap into the weight reduction wiring hole.

6. The needle-punching device for carbon-carbon crucible preforms as described in claim 5, characterized in that, The base plate has a through hole corresponding to the position of the assembly connection hole, and a protrusion is formed on the side of the base plate near the needle plate, which fits against the inner wall of the installation space.

7. The needle-punching device for carbon-carbon crucible preforms as described in claim 6, characterized in that, It also includes connecting columns, which pass through the cover plate through hole, the assembly connection hole and the bottom plate through hole in sequence, connecting and assembling the cover plate, the front support, the rear support and the bottom plate to form the shell.

8. The needle-punching device for carbon-carbon crucible preforms as described in claim 1, characterized in that, The housing has a connection hole for installing the needle device to a predetermined position.

9. A handheld acupuncture machine, characterized in that, The device includes a needle-punching apparatus for carbon-carbon crucible preforms as described in any one of claims 1-8, wherein the handheld needle-punching machine includes a handheld part and the needle-punching apparatus is mounted on the handheld part.

10. A needle-punching machine robot, characterized in that, The device includes a needle-punching apparatus for carbon-carbon crucible preforms as described in any one of claims 1-8, wherein the needle-punching robot includes a robotic arm and the needle-punching apparatus is mounted on the robotic arm.

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