Needle grinding device

Abstract

The invention relates to a needle grinding device, and relates to the technical field of needle machining. The needle grinding device comprises a support, a needle rod clamping mechanism, an angle adjusting mechanism and a grinding mechanism. The needle rod clamping mechanism can rotate through the angle adjusting mechanism, so that the inclination angles of the needle rods of the needling instrument can be adjusted and controlled in batches, and the consistency of the angles of needle points formed after the grinding mechanism grinds the multiple needle rods with the consistent inclination angles is better; in addition, due to the fact that the needle rods of the multiple needling instruments can be clamped at a time through the needle rod clamping mechanism, the grinding mechanism can grind the needle rods of the multiple needling instruments at a time, and therefore the machining efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of needle processing, in particular to a needle grinding device. Background Art

[0002] There are many types of disposable needles in the current medical industry, such as percutaneous puncture needles, ablation needles, bottle insertion needles, injection needles, infusion needles, acne needles, etc. This type of needle has certain requirements for puncture force and must meet specific industry standards. During the production process of this type of needle, the needle shaft of the needle needs to be ground to form the required needle tip structure. Common needle tip structures include triangular, beveled, conical and other structures. At present, the grinding process of the needle shaft of the needle is still manual grinding of each needle shaft separately. There is no corresponding equipment to assist in the grinding process, which leads to poor consistency of the obtained needle tip angle; and the processing process is a single needle clamping grinding, so the processing efficiency is low. Summary of the invention

[0003] The present invention provides a needle grinding device, which is used to solve at least one of the above-mentioned technical problems.

[0004] The present invention provides a needle grinding device, comprising:

[0005] Bracket;

[0006] A needle bar clamping mechanism, which is rotatably connected to the bracket, and the needle bar clamping mechanism can clamp the needle bars of a plurality of needles, and the needle bars of the plurality of needles are arranged in sequence along a first direction;

[0007] an angle adjustment mechanism, which is disposed on the bracket and connected to the needle bar clamping mechanism, and the angle adjustment mechanism can drive the needle bar clamping mechanism to rotate relative to the bracket to adjust the inclination angle of the needle bar of the needle tool; and

[0008] A grinding mechanism, wherein the grinding mechanism comprises a grinding head, wherein one of the grinding head and the needle bar clamping mechanism can move relative to the other along one or more directions of the first direction, a second direction and a third direction respectively perpendicular to the first direction, so that the grinding head can grind the needle bars of a plurality of needles having the preset angle in sequence.

[0009] In one embodiment, the needle bar clamping mechanism comprises:

[0010] First splint;

[0011] A second clamping plate, which is arranged opposite to the first clamping plate, and the needle bars of a plurality of needles are clamped in sequence between the first clamping plate and the second clamping plate; and

[0012] A rotating shaft, the rotating shaft is fixedly connected to one of the first clamping plate and the second clamping plate, and is rotationally connected to the other one; the rotating shaft is also connected to the angle adjustment mechanism;

[0013] The first clamping plate and the second clamping plate are configured such that when they are locked with each other, they can rotate along with the rotating shaft; and when they are unlocked with each other, one of the first clamping plate and the second clamping plate can rotate relative to the other with the rotating shaft as the rotating axis.

[0014] In one embodiment, the needle bar clamping mechanism further comprises:

[0015] A hinge support frame, comprising a first arm and a second arm connected in rotation, wherein the first arm is also connected in rotation to the first clamping plate, and the second arm is connected in rotation to the second clamping plate; and

[0016] The rotation locking mechanism comprises a clip, wherein the clip is rotationally connected to one of the first clamping plate and the second clamping plate, and the clip can perform a locking operation when it is rotated to contact the other of the first clamping plate and the second clamping plate.

[0017] In one embodiment, a needle groove is provided on one of the first splint and the second splint, and the needle groove is used to accommodate the needle rod of the needle. A protective pad is also provided between the first splint and the second splint, and the protective pad covers the needle rod of the needle.

[0018] In one embodiment, the angle adjustment mechanism includes one or more of a gear transmission mechanism, a synchronous belt transmission mechanism, a rack and pinion transmission mechanism, a sprocket transmission mechanism, a worm gear transmission mechanism, and a screw transmission mechanism.

[0019] In one embodiment, the angle adjustment mechanism comprises:

[0020] a gear assembly fixed on the top of the bracket, the gear assembly comprising a driving gear and a driven gear meshing with each other, wherein the axes of the driving gear and the driven gear are perpendicular to each other; and

[0021] A synchronous belt assembly is fixed on the side of the bracket, and the synchronous belt assembly includes a driving synchronous belt pulley, a driven synchronous belt pulley, a synchronous belt connecting the driving synchronous belt pulley and the driven synchronous belt pulley, and a tensioning wheel. The driving synchronous belt pulley is fixedly connected to the driven gear, the driven synchronous belt pulley is rotatably connected to the rotating shaft, and the tensioning wheel is located on one side of the synchronous belt and is used to adjust the tension of the synchronous belt.

[0022] In one embodiment, the angle adjustment mechanism further includes an angle display compass located at a side of the bracket and fixedly connected to the rotating shaft or an angle sensor connected to the rotating shaft.

[0023] In one embodiment, it further includes a base, the grinding mechanism further includes a three-axis motion mechanism, the three-axis motion mechanism includes an X-axis module arranged on the base, a Y-axis module slidably connected to the X-axis module, and a Z-axis module slidably connected to the Y-axis module, and the grinding head or the bracket is slidably arranged on the Z-axis module;

[0024] Wherein, the X-axis module, the Y-axis module and the Z-axis module all include a screw mechanism.

[0025] In one embodiment, a liquid circuit mechanism is further included, and the liquid circuit mechanism includes a pump body located on the bracket and a pipeline connected to the pump body, and the end of the pipeline is connected to a nozzle, and the nozzle is located above the grinding head.

[0026] In one embodiment, a drag chain assembly is disposed on the base, the drag chain assembly is located at one side of the X-direction module and is connected to the Y-direction module, and the pipeline runs through the drag chain assembly.

[0027] Compared with the prior art, the advantage of the present invention is that the needle bar clamping mechanism can be rotated through the angle adjustment mechanism, so that the inclination angle of the needle bars of the needle tools can be adjusted and controlled in batches, and the consistency of the needle tip angle formed after the grinding mechanism grinds multiple needle bars with consistent inclination angles is better; in addition, since the needle bars of multiple needle tools can be clamped at one time by the needle bar clamping mechanism, the grinding mechanism can perform grinding operations on the needle bars of multiple needle tools at one time, thereby improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0029] Figure 1 is a schematic diagram of the three-dimensional structure of a needle grinding device in an embodiment of the present invention;

[0030] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the needle bar clamping mechanism shown;

[0031] Figure 3 yes Figure 1 A magnified view at point A;

[0032] Figure 4 yes Figure 2 A schematic diagram of the three-dimensional structure of the second splint shown;

[0033] Figure 5a yes Figure 4 Enlarged view at B;

[0034] Figure 5b yes Figure 4 Enlarged view at C;

[0035] Figure 5c It is a schematic diagram of the structure with the needle bar placed on the second splint;

[0036] Figure 5d yes Figure 5c Enlarged view at G;

[0037] Figure 6 yes Figure 2 A schematic diagram of the three-dimensional structure of the first splint shown;

[0038] Figure 7 is a front view of a needle bar clamping mechanism in one embodiment of the present invention;

[0039] Figure 8 yes Figure 7 Enlarged view at D;

[0040] Fig. 9 is a front view of a needle bar clamping mechanism in another embodiment of the present invention;

[0041] Fig.10 yes Fig. 9 Enlarged view at E;

[0042] Fig.11 yes Figure 1 A schematic diagram of the three-dimensional structure of the bracket shown;

[0043] Fig.12 yes Figure 1 a side view of the bracket shown (viewed from the outside);

[0044] Fig.13 yes Figure 1 A side view of the bracket shown (viewed from the inside);

[0045] Fig.14 yes Figure 1 A schematic diagram of the three-dimensional structure of the angle adjustment mechanism shown;

[0046] Fig.15 yes Fig.12 Sectional view at AA;

[0047] Fig.16 yes Figure 1 A side view of the bracket shown (wherein the angle adjustment mechanism and the needle bar clamping mechanism are not shown);

[0048] Fig.17 yes Fig.16Enlarged view at F;

[0049] Fig.18 and Fig.19 yes Figure 1 The three-dimensional structural schematic diagram of the X-axis module is shown;

[0050] Fig. 20 yes Figure 1 The three-dimensional structural diagram of the Y-axis module is shown;

[0051] Fig.21 yes Figure 1 A schematic diagram of a three-dimensional structure in which the Y-direction module is installed on the X-direction module;

[0052] Fig. 22 A schematic diagram of the three-dimensional structure when the Y-direction module is installed on the first movable plate of the X-direction module is shown;

[0053] Fig.23 yes Figure 1 The three-dimensional structure schematic diagram of the Z-direction module as viewed from the front side;

[0054] Fig.24 yes Figure 1 The three-dimensional structure schematic diagram of the Z-direction module as viewed from the back side;

[0055] Fig.25 yes Figure 1 A schematic diagram of the three-dimensional structure when the Z-direction module is installed on the second movable plate on the Y-direction module;

[0056] Fig.26 yes Figure 1 The three-dimensional structure schematic diagram of the Z-direction module as viewed from the bottom side, wherein the third screw rod is not shown;

[0057] Fig. 27 yes Figure 1 A schematic diagram of the three-dimensional structure of the liquid circuit mechanism shown;

[0058] Fig.28 and Fig.29 is a front view of a liquid storage tank in an embodiment in which the pump body is a liquid pump;

[0059] Fig.30 is a schematic diagram of the three-dimensional structure of the liquid storage tank in an embodiment in which the pump body is an air pump;

[0060] Fig.31 It is a schematic diagram of a three-dimensional structure in which a drag chain assembly is connected to an X-direction module in an embodiment of the present invention;

[0061] Fig.32 It is a schematic diagram of the three-dimensional structure in which the nozzle is installed on the Z-direction module in an embodiment of the present invention.

[0062] Reference numerals:

[0063] 100, base; 200, bracket; 300, angle adjustment mechanism; 400, needle bar clamping mechanism; 500, liquid path mechanism; 600, X-axis module; 700, Y-axis module; 800, Z-axis module; 900, grinding mechanism;

[0064] 110, collecting tank; 120, needle bar; 101, base plate; 102, vibration isolation support part;

[0065] 201, top panel; 202, side panel; 204, angle display compass;

[0066] 2011, gear transmission shaft mounting hole;

[0067] 2021, synchronous pulley mounting hole; 2022, tensioner mounting hole; 2023, angle scale line; 2024, shaft mounting hole; 2041, scale indicator line;

[0068] 31. Gear assembly; 32. Synchronous belt assembly;

[0069] 301, driving gear; 302, driven gear; 303, gear transmission shaft; 304, first locking handle; 305, first hand wheel;

[0070] 306, driving synchronous pulley; 307, driven synchronous pulley; 308, tensioning pulley; 309, synchronous belt; 310, synchronous belt shaft;

[0071] 401, rotating shaft; 402, first clamping plate; 403, second clamping plate; 404, hinge support frame; 405, pin shaft; 406, clip; 407, locking member; 408, handle; 409, protective pad; 410, rotation locking mechanism;

[0072] 4021, through hole; 4022, receiving groove; 4023, first extension arm; 4024, first pressing plate;

[0073] 4031, spline hole; 4032, needle groove; 4033, second extension arm; 4034, second pressing plate; 4035, rotating lug;

[0074] 4041, first arm; 4042, second arm;

[0075] 4061, extension rod;

[0076] 4091, boss;

[0077] 501, liquid storage tank; 502, pipeline; 503, pump body; 504, nozzle; 505, drag chain assembly;

[0078] 5011, tank body; 5012, liquid outlet; 5013, liquid level sensor; 5014, liquid filling port; 5015, liquid outlet pipe; 5016, oblique opening; 5017, window; 5018, liquid level scale line; 5019, liquid outlet pipe counterweight;

[0079] 501A, safety valve; 501B, check valve; 501C, air inlet;

[0080] 5021, first tube; 5022, second tube;

[0081] 5051, sheath pipe;

[0082] 601, second hand wheel; 602, second locking handle; 603, first moving seat; 604, first sliding block; 605, first sliding rail; 606, first sliding platform; 607, first screw rod;

[0083] 6031, first movable plate; 6032, first movable block; 6033, first screw rod hole;

[0084] 6051, first slide rail groove; 6061, first screw rod groove;

[0085] 701, third hand wheel; 702, third locking handle; 703, second moving seat; 704, second slide block; 705, second slide rail; 706, second slide table; 707, second screw rod;

[0086] 7031, second movable plate; 7032, second movable block; 7033, second screw rod hole;

[0087] 7051, second slide rail groove;

[0088] 7061, second screw rod slot; 7062, first adjustment slot;

[0089] 801, fourth hand wheel; 802, fourth locking handle; 803, third moving seat; 804, third sliding block; 805, third sliding rail; 806, third sliding platform; 807, third screw rod;

[0090] 8031, third moving plate; 8032, third moving block; 8033, third screw rod hole;

[0091] 8051, third slide rail slot;

[0092] 8061, third screw rod groove; 8062, second adjustment groove; 8063, support connecting plate; 8064, pipeline fixing ring;

[0093] 901. Grinding head. DETAILED DESCRIPTION

[0094] The present invention will be further described below in conjunction with the accompanying drawings.

[0095] like Figure 1-Figure 32 As shown, the present invention provides a needle grinding device, which is used to grind the needle rod of the needle to form a triangular, oblique, conical or other needle tip structure that can meet industry standards.

[0096] Specifically, the needle grinding device of the present invention includes a base 100 and a bracket 200 located on the base 100 , a needle bar clamping mechanism 400 , an angle adjustment mechanism 300 , a grinding mechanism 900 and a fluid path mechanism 500 .

[0097] like Figure 1 and Fig.11 As shown, the bracket 200 is used to support the needle bar clamping mechanism 400 and the angle adjustment mechanism 300, which can be set as a gantry structure, for example, it can include a top plate 201 and two side plates 202 located on both sides of the top plate 201, and the bottom ends of the two side plates 202 on both sides are respectively fixed on the base 100.

[0098] like Figure 1 , Figure 2 and Figure 3 As shown, the needle bar clamping mechanism 400 is located between the two side plates 202 and is rotatably connected to the two side plates 202. The needle bar clamping mechanism 400 can clamp the needle bars 120 of multiple needles, and the needle bars 120 of multiple needles are arranged in sequence along the first direction. Figure 1 The X-axis direction is shown.

[0099] The needle can be, for example, a percutaneous puncture needle, an ablation needle, a bottle insertion needle, an injection needle, an infusion needle, or an acne needle, etc. The needle bar clamping mechanism 400 can clamp at least 100 needle bars 120, for example, 200-300 needle bars, that is, the needle bar clamping mechanism 400 can be used to clamp a large number of needle bars 120.

[0100] The angle adjustment mechanism 300 is disposed on the bracket 200 and connected to the needle bar clamping mechanism 400. The angle adjustment mechanism 300 can drive the needle bar clamping mechanism 400 to rotate relative to the bracket 200 to adjust the inclination angle of the needle bar 120 of the needle tool. The inclination angle of the needle bar 120 is the angle between the extension direction of the needle bar 120 and the second direction (Y-axis direction), for example, 0°-60°.

[0101] The grinding mechanism 900 includes a grinding head 901. One of the grinding head 901 and the needle bar clamping mechanism 400 can be relative to the other along a first direction and a second direction perpendicular to the first direction (eg, Figure 1 Y-axis direction) and the third direction (as shown Figure 1The grinding head 901 can move in one direction or multiple directions (Z-axis direction shown), so that the grinding head 901 can grind the needle bars 120 of multiple needles with preset angles in sequence.

[0102] The angle adjustment mechanism 300 can be used to adjust and control the inclination angle of the needle bars 120 of the needle tools in batches, and the grinding mechanism 900 can achieve better consistency in the needle tip angles formed after grinding multiple needle bars 120 with consistent inclination angles. In addition, since the needle bar clamping mechanism 400 can clamp multiple needle bars 120 at a time, the grinding mechanism 900 can perform grinding operations on multiple needle bars 120 at a time, thereby improving processing efficiency.

[0103] Specifically, if Figure 2-Figure 10 As shown, the needle bar clamping mechanism 400 includes a first clamping plate 402 and a second clamping plate 403 disposed opposite to each other and a rotating shaft 401 connecting the first clamping plate 402 and the second clamping plate 403. Figure 2 and Figure 3 As shown, the needle bars 120 of a plurality of needles are clamped in sequence between the first clamping plate 402 and the second clamping plate 403 .

[0104] The rotating shaft 401 is fixedly connected to one of the first clamping plate 402 and the second clamping plate 403, and is rotationally connected to the other one. For example, the rotating shaft 401 is fixedly connected to the second clamping plate 403 located below the needle bar 120, and is rotationally connected to the first clamping plate 402 located above the needle bar 120. The first clamping plate 402 and the second clamping plate 403 can be locked with each other, so when the rotating shaft 401 is driven to rotate, it can drive the first clamping plate 402 and the second clamping plate 403 and the needle bars 120 of multiple needle tools clamped therebetween to rotate, so that the needle bar 120 can be adjusted to a corresponding tilt angle so that the grinding mechanism 900 can grind it.

[0105] like Figure 4 As shown, Figure 5a and Figure 5b The second clamping plate 403 includes a second pressing plate 4034, on which a plurality of needle grooves 4032 (such as Figure 5b As shown), the plurality of needle grooves 4032 may be arranged along the length direction of the second clamping plate 403 (ie Figure 4 The second clamping plate 4034 is also provided with a plurality of second extension arms 4033, which are also arranged in sequence and at intervals along the length direction of the second clamping plate 403. The second extension arms 4033 are provided with a hole for connecting with the rotating shaft 401 at one end away from the needle groove 4032. As mentioned above, the rotating shaft 401 is fixedly connected to the second clamping plate 403, so the hole on the second extension arm 4033 can be set as a spline hole 4031 (as shown in FIG. Figure 5aAs shown), it is fixedly connected by cooperating with the rotating shaft 401.

[0106] It can be understood that the rotating shaft 401 is correspondingly configured as a spline shaft, which cooperates with the spline hole 4031 on the second extension arm 4033, so that the rotating shaft 401 and the second extension arm 4033 can be fixedly connected.

[0107] like Figure 6 As shown, the first clamping plate 402 includes a first pressing plate 4024, which is used to cooperate with the second pressing plate 4034 to clamp the needle bar 120 therebetween. The first pressing plate 4024 is also provided with a plurality of first extension arms 4023, which extend along the length direction of the first clamping plate 402 (i.e. Figure 6 The first extension arms 4023 and the second extension arms 4033 are arranged in sequence (in the X-axis direction shown in the figure), and when the first clamping plate 402 and the second clamping plate 403 cooperate with each other, the first extension arms 4023 and the second extension arms 4033 are arranged alternately. That is, one (or several) of the first extension arms 4023 is located between two adjacent second extension arms 4033, and one (or several) of the second extension arms 4033 is located between two adjacent first extension arms 4023, so that the mutual rotation between the first clamping plate 402 and the second clamping plate 403 is not affected.

[0108] Furthermore, one end of the second extension arm 4033 is provided with a hole for connecting with the rotating shaft 401. As described above, the rotating shaft 401 is rotatably connected with the first clamping plate 402, so the hole on the first extension arm 4023 can be set as a through hole 4021 (such as Figure 6 As shown in FIG. 4 , the inner diameter of the through hole 4021 is larger than the maximum outer diameter of the rotating shaft 401, so the first extension arm 4023 can rotate relative to the rotating shaft 401. Therefore, when the first clamping plate 402 rotates relative to the rotating shaft 401, the clamping angle between the first clamping plate 402 and the second clamping plate 403 can be changed, that is, the first clamping plate 402 and the second clamping plate 403 are opened or closed, so as to place the needle bar 120 between the two or take it out from the two.

[0109] like Figure 6 As shown, a receiving groove 4022 extending in a direction away from the second pressing plate 4034 is further provided on the side of the first pressing plate 4024 facing the second pressing plate 4034, and is used to place a protective pad 409. The protective pad 409 can be a flexible protective pad such as a silicone pad. When the first pressing plate 4024 and the second pressing plate 4034 are in contact with each other, the protective pad 409 can cover the needle rod 120 in the needle groove 4032, thereby protecting the needle rod 120 and avoiding pinching the needle rod 120.

[0110] In addition, the protective pad 409 can also play a certain compression role on the needle rod 120 in the needle groove 4032. Figure 7 and Figure 8As shown, a boss 4091 extending toward the second pressing plate 4034 is further provided on one side of the protection pad 409 facing the second pressing plate 4034. When the needle bar 120 is located in the needle groove 4032, the boss 4091 on the protection pad 409 can extend into the needle groove 4032 and press on the needle bar 120 in the needle groove 4032, thereby pressing the needle bar 120 tightly in the needle groove 4032. It can be understood that the number of bosses 4091 can be the same as the number of needle grooves 4032, and the two are arranged in a one-to-one correspondence. The height of the boss 4091 protruding toward the second pressing plate 4034 should be less than the depth of the needle groove 4032, so as to reserve a certain space for the needle groove 4032 to accommodate the needle bar 120.

[0111] It should be noted that the protection pad 409 is not necessary and can be separately provided between the first pressing plate 4024 and the second pressing plate 4034 ; or it can be integrated into the first pressing plate 4024 , that is, the protection pad 409 can be formed separately from the first pressing plate 4024 or in one piece.

[0112] Alternatively, instead of providing the protection pad 409 between the first pressing plate 4024 and the second pressing plate 4034, a boss 4091 may be directly provided on the side of the first pressing plate 4024 facing the second pressing plate 4034, and the boss 4091 may be provided with a flexible material such as silicone, which can also play a dual role of protection and compression.

[0113] Further, for a needle bar 120 with a rectangular cross section, such as a rectangular flat steel needle bar (with specifications ranging from 0.2 mm×0.35 mm to 2.0×3.0 mm), the needle groove 4032 can be correspondingly set as a rectangular needle groove, such as Figure 8 The protection pad 409 or the boss 4091 on the first pressing plate 4024 can also be configured as a rectangular structure.

[0114] For a needle bar 120 with a circular cross section, such as a tubular needle bar (with an outer diameter of 0.2 mm to 3.0 mm), the needle groove 4032 can be correspondingly set as a V-shaped groove or a semicircular groove, such as Fig. 9 and Fig.10 A corresponding V-shaped groove is also provided on the side of the protection pad 409 (or the first pressing plate 4024) facing the second pressing plate 4034, so that the V-shaped groove on the protection pad 409 (or the first pressing plate 4024) and the V-shaped groove on the second pressing plate 4034 are interlocked to form a space capable of accommodating and clamping the tubular needle rod.

[0115] For a needle rod 120 having other cross-sections, the shape of the needle groove 4032 can be adjusted accordingly so that it can cooperate with the needle rod 120.

[0116] like Figure 5c and Figure 5dAs shown, the length L1 of the needle groove 4032 (i.e., the dimension in the Y-axis direction) is smaller than the length L4 of the needle bar 120. Figure 5d As shown, the two ends of the needle rod 120 extend beyond the front end and the rear end of the needle groove 4032 by a certain distance respectively.

[0117] Specifically, the length L1 of the needle groove 4032 is 2 / 3 of the length L4 of the needle bar 120, that is, the needle groove 4032 can accommodate 2 / 3 of the needle bar 120. For example, if the length L1 of the needle groove 4032 is 80 mm, the distance L2 of the needle bar 120 beyond the front end of the needle groove 4032 may be 10 mm, and the distance L3 of the needle bar 120 beyond the rear end of the needle groove 4032 may be 30 mm. It can be understood that the length L4 of the needle bar 120 = L1 + L2 + L3.

[0118] Please combine Figure 4 The thickness of the second pressing plate 4034 where the needle groove 4032 is located is greater than the thickness of the second extension arm 4033, so the needle groove 4032 only extends on the second pressing plate 4034, and the part of the needle rod 120 that exceeds the rear end of the needle groove 4032 can extend above the second extension arm 4033.

[0119] The needle groove 4032 can be adapted to clamp a needle rod 120 with a length of ≤300 mm.

[0120] Please continue to see Figure 2 , and please combine Fig.11 , Fig.12 and Fig.15 The rotating shaft 401 is also connected to the angle adjustment mechanism 300. The angle adjustment mechanism 300 can drive the rotating shaft 401 to rotate. The rotating shaft 401 is fixedly connected to the second clamping plate 403, so that the second clamping plate 403 and the first clamping plate 402 can be driven to rotate together, thereby adjusting the inclination angle of the needle rod 120 between the first clamping plate 402 and the second clamping plate 403.

[0121] In order to ensure that when the rotating shaft 401 rotates, the second clamping plate 403 and the first clamping plate 402 can rotate together; and the second clamping plate 403 and the first clamping plate 402 can also rotate relative to each other, the first clamping plate 402 and the second clamping plate 403 are constructed to be able to lock or unlock each other.

[0122] Specifically, the first clamping plate 402 and the second clamping plate 403 are configured to rotate along with the rotating shaft 401 when they are locked with each other; and when they are unlocked with each other, one of the first clamping plate 402 and the second clamping plate 403 can rotate relative to the other with the rotating shaft 401 as the rotation axis.

[0123] In order to achieve mutual locking or mutual unlocking between the first clamping plate 402 and the second clamping plate 403, the needle bar clamping mechanism 400 further includes a hinge support frame 404 and a rotation locking mechanism 410. Since the needle bar 120 is located at the front side of the first clamping plate 402 and the second clamping plate 403, the hinge support frame 404 and the rotation locking mechanism 410 are both located at the left and right sides of the first clamping plate 402 and the second clamping plate 403 to avoid affecting the needle bar 120.

[0124] like Figure 2 As shown, the hinge support frame 404 is used to enable the first clamping plate 402 to maintain an open position when the first clamping plate 402 and the second clamping plate 403 are opened to each other, so as to facilitate the clamping and picking up of the needle bar 120; it can also constrain the rotation path of the first clamping plate 402 to prevent it from shaking.

[0125] The hinge support frame 404 includes a first arm 4041 and a second arm 4042 which are rotatably connected. The first arm 4041 is also rotatably connected to the first clamping plate 402 , and the second arm 4042 is rotatably connected to the second clamping plate 403 .

[0126] like Figure 2 Please combine Fig.14 There are two hinge support frames 404, which are respectively arranged on both sides of the second clamping plate 403. The second arms 4042 in the hinge support frames 404 are respectively connected to the side portions of the second extension arms 4033 located at the outermost sides of the second clamping plate 403, and the first arms 4041 in the hinge support frames 404 are respectively connected to the first pressing plates 4024 on the first clamping plate 402. Since the first arm 4041 and the second arm 4042 are also connected to each other, when the first clamping plate 402 rotates relative to the second clamping plate 403 around the rotation axis 401, the second arm 4042 and the second clamping plate 403, the second arm 4042 and the first arm 4041, and the first arm 4041 and the first pressing plate 4024 also rotate relative to each other, so that the first clamping plate 402 and the second clamping plate 403 are opened or closed along a predetermined route, and the two will not deviate from each other in the X-axis direction.

[0127] Please continue to refer to Figure 2 The rotation locking mechanism 410 includes a clip 406, which is rotationally connected to one of the first clamping plate 402 and the second clamping plate 403. When the clip 406 rotates to contact the other of the first clamping plate 402 and the second clamping plate 403, a locking operation can be performed.

[0128] like Figure 2 As shown, the clip 406 is rotatably connected to the second clamping plate 403. For example, a rotating lug 4035 (such as Figure 4As shown in FIG. 4 , the lower end of the clip 406 is connected to the rotating lug 4035 via the pin 405 , so that the clip 406 can rotate relative to the second clamping plate 403 .

[0129] The upper end of the clip 406 is provided with an extension rod 4061, which is perpendicular to the extension direction of the clip 406, so when the clip 406 is rotated to fit the side wall of the second clamping plate 403, the extension rod 4061 can be located above the first clamping plate 402 and extend along the length direction of the first clamping plate 402. The extension rod 4061 is provided with a locking member 407, which passes through the extension rod 4061 and is threadedly connected to the extension rod 4061, so when the locking member 407 is tightened on the extension rod 4061, its end can be pressed against the first pressing plate 4024 on the first clamping plate 402 and the first clamping plate 402 is pressed against the second pressing plate 4034 of the second clamping plate 403, thereby locking the first clamping plate 402 and the second clamping plate 403 to each other. Conversely, when the locking member 407 rotates in the opposite direction on the extension rod 4061, its end is separated from the first pressure plate 4024 on the first clamping plate 402, and the clip 406 can be rotated to separate from the side wall of the second clamping plate 403, thereby unlocking the first clamping plate 402 and the second clamping plate 403 to insert or remove the needle rod 120.

[0130] The locking member 407 can be a large-head knurled screw or a butterfly screw to facilitate locking and unlocking operations.

[0131] like Figure 2 As shown, a handle 408 is also provided on the first clamping plate 402, and the handle 408 can facilitate the first clamping plate 402 to rotate relative to the second clamping plate 403 so that the two can be opened or closed.

[0132] The angle adjustment mechanism 300 is used to drive the first clamping plate 402 and the second clamping plate 403 and the needle rod 120 between the first clamping plate 402 and the second clamping plate 403 to rotate through the rotating shaft 401, thereby changing the inclination direction of the needle rod 120 so that the angle between it and the second direction can be adjusted to a preset angle, so as to form a triangular, oblique, conical or other needle tip structure with good consistency.

[0133] Specifically, the angle adjustment mechanism 300 includes one or more of a gear transmission mechanism, a synchronous belt transmission mechanism, a gear rack transmission mechanism, a sprocket transmission mechanism, a worm gear transmission mechanism, and a screw transmission mechanism.

[0134] like Figure 11-Figure 17 As shown, the gear transmission mechanism and the synchronous belt transmission mechanism are taken as examples for explanation.

[0135] like Fig.13 , Fig.14 and Fig.15As shown, the angle adjustment mechanism 300 includes a gear assembly 31 and a synchronous belt assembly 32. The gear assembly 31 can transmit the force to the synchronous belt assembly 32, and the synchronous belt assembly 32 is connected to the rotating shaft 401, so as to drive the rotating shaft 401 to rotate. In order to facilitate the application of force, the gear assembly 31 can be set on the top plate 201, such as Fig.14 and Fig.15 Specifically, the gear assembly 31 includes a driving gear 301 and a driven gear 302 that mesh with each other, and the axes of the driving gear 301 and the driven gear 302 are perpendicular to each other. Fig.15 As shown, the driving gear 301 is constructed as a bevel gear, which is fixed to the end of the gear transmission shaft 303. The gear transmission shaft 303 vertically penetrates the top plate 201, and one end thereof located above the top plate 201 is respectively connected to a first locking handle 304 and a first hand wheel 305. The first locking handle 304 is used to lock or unlock the gear transmission shaft 303, and it can lock the gear transmission shaft 303 by clamping or engaging. For example, when the first locking handle 304 is rotated to the unlocking position, the gear transmission shaft 303 can rotate, and when the first locking handle 304 is rotated to the locking position, the gear transmission shaft 303 cannot rotate.

[0136] The top end of the gear transmission shaft 303 is connected to the first hand wheel 305. When the first locking handle 304 is in the unlocking position, the gear transmission shaft 303 can be driven to rotate by rotating the first hand wheel 305, and the driving gear 301 at its lower end can transmit force to the driven gear 302.

[0137] The transmission ratio between the driving gear 301 and the driven gear 302 is ≥1.5, that is, the driving gear 301 is a small gear, so low torque can be input through the first hand wheel 305, which can save more effort.

[0138] It is understandable that the first hand wheel 305 is not necessary, and it can be replaced by a rocker, or by a power component such as a motor (servo motor) to achieve electric control. When driven by a servo motor, it also has the characteristics of stable operation, constant power output, etc., and can also have a certain overload capacity.

[0139] like Fig.14 and Fig.15 As shown, the synchronous belt assembly 32 is fixed on the side plate 202 of the bracket 200, and the synchronous belt assembly 32 includes a driving synchronous pulley 306, a driven synchronous pulley 307, a synchronous belt 309 connecting the driving synchronous pulley 306 and the driven synchronous pulley 307, and a tensioning wheel 308. The driving synchronous pulley 306 is fixedly connected to the driven gear 302, the driven synchronous pulley 307 is rotationally connected to the rotating shaft 401, and the tensioning wheel 308 is located on one side of the synchronous belt 309 and is used to adjust the tension of the synchronous belt 309.

[0140] Please combine Fig.11 , Fig.13 and Fig.15 The side plate 202 is provided with a synchronous pulley mounting hole 2021, and the active synchronous pulley 306 is fixed in the synchronous pulley mounting hole 2021 through the synchronous belt shaft 310. Fig.15 As shown, the driven gear 302 is fixed to the end of the synchronous belt shaft 310, and the synchronous belt shaft 310 and the gear transmission shaft 303 are perpendicular to each other, so the driving gear 301 and the driven gear 302 at the end thereof are meshed with each other.

[0141] Please continue to see Fig.15 The side plate 202 is also provided with a shaft mounting hole 2024, the shaft 401 is fixedly connected to the driven synchronous pulley 307, and the shaft 401 is rotatably connected to the shaft mounting hole 2024 after passing through the driven synchronous pulley 307. For example, a bearing can be provided in the shaft mounting hole 2024, which is connected to the shaft 401, so that the shaft 401 can rotate relative to the side plate 202.

[0142] Therefore, when the first locking handle 304 is in the unlocking position, the gear transmission shaft 303 and the driven gear 302 can be driven to rotate by rotating the first hand wheel 305. The rotation of the driven gear 302 drives the active synchronous pulley 306 to rotate. The active synchronous pulley 306 drives the driven synchronous pulley 307 to rotate through the synchronous belt 309. The driven synchronous pulley 307 drives the rotating shaft 401 and the mutually locked first clamping plate 402 and the second clamping plate 403 to rotate, so that the needle bar 120 between the first clamping plate 402 and the second clamping plate 403 can be rotated relative to the side plate 202, so as to adjust the inclination angle of the needle bar 120.

[0143] like Fig.11 As shown, a tensioning wheel mounting hole 2022 is also provided on the side plate 202 , and the tensioning wheel 308 is fixed in the tensioning wheel mounting hole 2022 . The tensioning force of the synchronous belt 309 can be adjusted through the tensioning wheel 308 .

[0144] Therefore, the first-level transmission pair (i.e., the power input end) of the angle adjustment mechanism 300 is a gear transmission (bevel gear transmission), which has high efficiency and low noise; the second-level transmission pair is a synchronous pulley transmission, which has the characteristics of high efficiency, low noise, smooth transmission, and maintenance-free; the tertiary transmission pair is a rotating shaft (spline shaft) transmission, which has the characteristics of easy assembly, high strength, keyless assembly at any shaft position, and high flexibility.

[0145] Furthermore, in order to more accurately control the rotation angle of the needle rod 120 so as to achieve consistency of the needle tip after grinding the needle rod 120, the angle adjustment mechanism 300 also includes an angle display compass 204 located on the side of the bracket 200 and fixedly connected to the rotating shaft 401 or an angle sensor connected to the rotating shaft 401.

[0146] like Fig.16 and Fig.17 As shown, the side plate 202 is provided with angle scale lines 2023, wherein 0° corresponds to the direction Figure 1 The side plate 202 is also provided with an angle display compass 204, which is fixedly connected to the end of the rotating shaft 401 (such as Fig.15 Therefore, when the shaft 401 rotates, the angle display compass 204 also rotates with it. Fig.17 As shown, the angle display compass 204 is provided with an indicator mark (such as an arrow, etc.), which can point to the angle scale line 2023 on the side plate 202, so that when the rotating shaft 401 rotates to a certain angle, the angle of rotation of the rotating shaft 401 can be determined by the indicator mark on the angle display compass 204, that is, the upward tilt angle of the needle bar 120 can be determined. Therefore, the tilt angles of the multiple needle bars 120 between the first clamping plate 402 and the second clamping plate 403 can be controlled to be consistent, thereby improving the consistency of the angle of the needle tip formed after the needle bar 120 is ground.

[0147] The angle scale lines 2023 are formed on the side plate 202 by laser printing or screen printing, with each 5° being a small scale and each 10° being a large scale. Since the rotation angle range of the needle bar 120 driven by the needle bar clamping mechanism 400 (i.e., the corresponding grinding bevel angle) is 0°-60°, the angle scale lines 2023 are in the range of 0°-60°. Fig.17 The position corresponding to the 0 scale line is the position where the needle bar clamping mechanism 400 and the needle bar 120 are parallel to the second direction.

[0148] Alternatively, an angle sensor may be provided on the rotating shaft 401 to indicate the angle through which the rotating shaft 401 rotates.

[0149] When the first hand wheel 305 is replaced by a power component such as a motor, the angle sensor can be electrically connected to the motor and provide feedback to the motor on the angle of rotation of the shaft 401. When the needle bar 120 rotates to a preset angle, the motor receives the feedback signal from the angle sensor and stops outputting.

[0150] like Figure 1 and Fig.16As shown, the base 100 includes a substrate 101, and the substrate 101 carries a bracket 200, a needle bar clamping mechanism 400, an angle adjustment mechanism 300, a grinding mechanism 900 and a liquid path mechanism 500. Therefore, in order to ensure that the substrate 101 has a certain level, a vibration isolation support part 102 is also provided on the substrate 101, and the vibration isolation support part 102 can be respectively provided at the four corners of the substrate 101. On the one hand, the levelness of the substrate 101 can be adjusted by adjusting the vibration isolation support part 102, and on the other hand, the vibration isolation support part 102 can also absorb part of the vibration when the grinding mechanism 900 performs a grinding operation to ensure the accuracy of the processing.

[0151] like Figure 1 Please combine Figure 18-Figure 26 The grinding mechanism 900 also includes a three-axis motion mechanism, which can enable the grinding head 901 and the needle bar clamping mechanism 400 to move relative to each other, so that the grinding head 901 and the needle bar 120 in the needle bar clamping mechanism 400 are in appropriate positions to facilitate grinding.

[0152] For example, the three-axis motion mechanism is connected to the grinding head 901, that is, the grinding head 901 is driven to move relative to the needle bar 120 in the needle bar clamping mechanism 400 for grinding; or, the three-axis motion mechanism can be connected to the bracket 200 (or the needle bar clamping mechanism 400), that is, grinding is performed by moving the needle bar clamping mechanism 400 relative to the grinding head 901.

[0153] The following description will be given with the three-axis motion mechanism connected to the grinding head 901 .

[0154] like Figure 1 As shown, the three-axis motion mechanism is located on the front side of the needle bar clamping mechanism 400, which can drive the grinding head 901 to move in three directions: a first direction (X-axis direction), a second direction (Y-axis direction) and a third direction (Z-axis direction), so that the grinding head 901 and the needle bar 120 in the needle bar clamping mechanism 400 are in appropriate positions to facilitate grinding.

[0155] Specifically, the three-axis motion mechanism includes an X-axis module 600 disposed on the base 100, a Y-axis module 700 slidably connected to the X-axis module 600, and a Z-axis module 800 slidably connected to the Y-axis module 700, and the grinding head 901 is slidably disposed on the Z-axis module 800. Among them, the X-axis module 600, the Y-axis module 700 and the Z-axis module 800 all include a screw mechanism.

[0156] like Fig.18 and Fig.19As shown, the X-axis module 600 includes a first slide 606 extending in a first direction, a first movable seat 603 and a first screw 607. The first slide 606 is fixed on the base 100, the first movable seat 603 is slidably disposed on the first slide 606, the first movable seat 603 is connected to the first screw 607, and the first screw 607 extends in the first direction (X-axis direction), so when the first screw 607 rotates, the first movable seat 603 can be moved on the first screw 607 in the first direction.

[0157] The first movable seat 603 can move along the extension direction of the first slide table 606 through the cooperation of the first slider 604 and the first slide rail 605 .

[0158] like Fig.19 As shown, the first slide 606 is provided with a first screw groove 6061, and first slide rails 605 are respectively provided on both sides of the first screw groove 6061, and first slide rail grooves 6051 are provided on both sides of the first slide rail 605. The first moving seat 603 includes a first moving plate 6031 and a first moving block 6032 fixedly connected below the first moving plate 6031, wherein the Y-axis module 700 can be fixed on the first moving plate 6031, and the first moving block 6032 is located in the first screw groove 6061 and moves in the first screw groove 6061.

[0159] The first slider 604 is fixedly connected to the lower part of the first moving plate 6031 and is respectively located on both sides of the first moving block 6032. The first slider 604 is arranged on the first slide rail 605, and the protrusion on the first slider 604 cooperates with the first slide rail grooves 6051 on both sides of the first slide rail 605, so that the first slider 604 can only move along the extension direction of the first slide rail 605 and will not fall off the first slide rail 605. The number of the first sliders 604 can be set as needed, and their function is to guide the first moving plate 6031 to move along the first slide rail 605, for example Fig.19 Please combine Fig. 22 Two first sliding blocks 604 are arranged on both sides of the first moving block 6032 .

[0160] The first moving block 6032 is provided with a first screw hole 6033, and the first screw 607 passes through the first screw hole 6033 and forms a threaded connection therewith. When the first screw 607 rotates, the first moving block 6032 can be moved on the first screw 607. Since the Y-axis module 700 is provided on the first moving plate 6031, when the first moving block 6032 moves, the Y-axis module 700 can be driven to move along the first direction (X-axis direction), so that the relative position of the grinding head 901 of the grinding mechanism 900 and the needle bar 120 in the first direction (X-axis direction) can be adjusted.

[0161] Furthermore, the X-axis module 600 also includes a second locking handle 602 and a second hand wheel 601, the second locking handle 602 is connected to the first screw rod 607, and when the second locking handle 602 is in the unlocked position, the first screw rod 607 can rotate; when the second locking handle 602 is in the locked position, the first screw rod 607 cannot rotate.

[0162] The second hand wheel 601 is connected to the first screw rod 607. When the second locking handle 602 is in the unlocking position, the first screw rod 607 can be driven to rotate by rotating the second hand wheel 601. It can be understood that the second hand wheel 601 can be replaced by a power component such as a motor (servo motor) to realize the electric control of the first screw rod 607. When driven by a servo motor, it also has the characteristics of stable operation, constant power output, etc., and can also have a certain overload capacity.

[0163] like Fig. 20 , Fig.21 and Fig. 22 As shown, the structure of the Y-axis module 700 is similar to that of the X-axis module 600 .

[0164] Specifically, Fig. 20 and Fig.21 As shown, the Y-axis module 700 includes a second slide 706 extending in the second direction (Y-axis direction), a second movable seat 703, and a second screw rod 707. The second slide 706 is fixed on the first movable plate 6031, and the second movable seat 703 is slidably disposed on the second slide 706. The second movable seat 703 is connected to the second screw rod 707, and the second screw rod 707 extends in the second direction (Y-axis direction). Therefore, when the second screw rod 707 rotates, the second movable seat 703 can be moved on the second screw rod 707 in the second direction.

[0165] The second movable seat 703 can move along the extension direction of the second slide table 706 through the cooperation of the second slider 704 and the second slide rail 705 .

[0166] like Fig.21 As shown, the second slide 706 is provided with a second screw groove 7061, and second slide rails 705 are respectively provided on both sides of the second screw groove 7061, and second slide rail grooves 7051 are provided on both sides of the second slide rail 705. The second movable seat 703 includes a second movable plate 7031 and a second movable block 7032 fixedly connected below the second movable plate 7031, wherein the Z-direction module 800 can be fixed on the second movable plate 7031, and the second movable block 7032 is located in the second screw groove 7061 and moves in the second screw groove 7061.

[0167] The second slider 704 is fixedly connected to the lower side of the second movable plate 7031 and is respectively located on both sides of the second movable block 7032. The second slider 704 is arranged on the second slide rail 705, and the protrusion on the second slider 704 cooperates with the second slide rail grooves 7051 on both sides of the second slide rail 705, so that the second slider 704 can only move along the extension direction of the second slide rail 705 and will not fall off from the second slide rail 705. The number of the second sliders 704 can be set as needed, and their function is to guide the second movable plate 7031 to move along the second slide rail 705, for example Fig.21 and Fig. 22 As shown, two second sliding blocks 704 are provided on both sides of the second moving block 7032 .

[0168] The second moving block 7032 is provided with a second screw hole 7033, and the second screw 707 passes through the second screw hole 7033 and forms a threaded connection therewith. When the second screw 707 rotates, the second moving block 7032 can be moved on the second screw 707. Since the Z-direction module 800 is provided on the second moving plate 7031, when the second moving block 7032 moves, the Z-direction module 800 can be driven to move along the second direction (Y-axis direction), so that the relative position of the grinding head 901 of the grinding mechanism 900 and the needle bar 120 in the second direction (Y-axis direction) can be adjusted.

[0169] Furthermore, the Y-axis module 700 also includes a third locking handle 702 and a third hand wheel 701. The third locking handle 702 is connected to the second screw rod 707, and when the third locking handle 702 is in the unlocked position, the second screw rod 707 can rotate; when the third locking handle 702 is in the locked position, the second screw rod 707 cannot rotate.

[0170] The third hand wheel 701 is connected to the second screw rod 707. When the third locking handle 702 is in the unlocking position, the second screw rod 707 can be driven to rotate by rotating the third hand wheel 701. It can be understood that the third hand wheel 701 can be replaced by a power component such as a motor (servo motor) to realize the electric control of the second screw rod 707. When driven by a servo motor, it also has the characteristics of stable operation, constant power output, etc., and can also have a certain overload capacity.

[0171] like Fig. 22 As shown, a first adjustment slot 7062 is further provided below the second slide 706, and the first adjustment slot 7062 is connected to the first movable plate 6031 of the X-axis module 600. By adjusting the relative position between the first movable plate 6031 of the X-axis module 600 and the first adjustment slot 7062, the installation position of the Y-axis module 700 on the first movable plate 6031 of the X-axis module 600 can be changed, thereby adjusting the stroke of the Y-axis module 700 in the second direction.

[0172] like Fig.23 , Fig.24 , Fig.25 and Fig.26 As shown, the structure of the Z-direction module 800 is similar to that of the X-direction module 600 .

[0173] Specifically, Fig.23 and Fig.26 As shown, the Z-direction module 800 includes a third slide 806 extending along a third direction (Z-axis direction), a third movable seat 803, and a third screw rod 807. The third slide 806 is fixed on the second movable plate 7031 of the Y-direction module 700, and the third movable seat 803 is slidably arranged on the third slide 806. The third movable seat 803 is connected to the third screw rod 807, and the third screw rod 807 extends along the third direction (Y-axis direction). Therefore, when the third screw rod 807 rotates, the third movable seat 803 can be moved on the third screw rod 807 along the third direction.

[0174] like Fig. 22 and Fig.24 As shown, a supporting connecting plate 8063 is provided on the side of the third slide 806 opposite to the third movable seat 803. The supporting connecting plate 8063 is constructed in an L-shaped structure, the bottom end of which is fixed on the second movable plate 7031 of the Y-direction module 700, and the side of which is fixed on the back side of the third slide 806. Since the third slide 806 extends along the Z-axis direction, that is, along the vertical direction of the grinding device, and the grinding mechanism 900 needs to be fixed on the third slide 806, the side of the supporting connecting plate 8063 can also support the third slide 806 to prevent the third slide 806 from tipping over.

[0175] The third movable seat 803 can move along the extension direction of the third slide table 806 through the cooperation of the third slider 804 and the third slide rail 805 .

[0176] like Fig.26 As shown, the third slide 806 is provided with a third screw groove 8061, and the third slide rails 805 are respectively provided on both sides of the third screw groove 8061, and the third slide rail grooves 8051 are provided on both sides of the third slide rail 805. The third movable seat 803 includes a third movable plate 8031 ​​and a third movable block 8032 fixedly connected below the third movable plate 8031, wherein the grinding mechanism 900 can be fixed on the third movable plate 8031, and the third movable block 8032 is located in the third screw groove 8061 and moves in the third screw groove 8061.

[0177] The third slider 804 is fixedly connected to the bottom of the third moving plate 8031 ​​and is respectively located on both sides of the third moving block 8032. The third slider 804 is arranged on the third slide rail 805, and the protrusion on the third slider 804 cooperates with the third slide rail grooves 8051 on both sides of the third slide rail 805, so that the third slider 804 can only move along the extension direction of the third slide rail 805 and will not fall off the third slide rail 805. The number of the third sliders 804 can be set as needed, and its function is to guide the third moving plate 8031 ​​to move along the third slide rail 805, for example Fig.26 As shown, two third sliding blocks 804 are provided on both sides of the third moving block 8032 .

[0178] The third moving block 8032 is provided with a third screw hole 8033, and the third screw 807 passes through the third screw hole 8033 and forms a threaded connection therewith. When the third screw 807 rotates, the third moving block 8032 can be moved on the third screw 807. Since the grinding mechanism 900 is provided on the third moving plate 8031, when the third moving block 8032 moves, the grinding mechanism 900 can be driven to move along the third direction (Z-axis direction), so that the relative position of the grinding head 901 of the grinding mechanism 900 and the needle bar 120 in the third direction (Z-axis direction) can be adjusted.

[0179] like Fig.24 As shown, the back side of the third slide 806 is further provided with a second adjustment slot 8062, and the second adjustment slot 8062 is connected to the support connecting plate 8063. By adjusting the relative position between the support connecting plate 8063 connected to the Y-axis module 700 and the second adjustment slot 8062, the installation position of the Z-axis module 800 on the second movable plate 7031 of the Y-axis module 700 can be changed, thereby adjusting the stroke of the Z-axis module 800 in the third direction.

[0180] Furthermore, the Z-axis module 800 also includes a fourth locking handle 802 and a fourth hand wheel 801. The fourth locking handle 802 is connected to the third screw rod 807, and when the fourth locking handle 802 is in the unlocked position, the third screw rod 807 can be rotated; when the fourth locking handle 802 is in the locked position, the third screw rod 807 cannot be rotated.

[0181] The fourth hand wheel 801 is connected to the third screw rod 807. When the fourth locking handle 802 is in the unlocking position, the third screw rod 807 can be driven to rotate by rotating the fourth hand wheel 801. It can be understood that the fourth hand wheel 801 can be replaced by a power component such as a motor (servo motor) to realize the electric control of the third screw rod 807. When driven by a servo motor, it also has the characteristics of stable operation, constant power output, etc., and can also have a certain overload capacity.

[0182] like Figure 1 As shown, when grinding the needle bar 120 in the needle bar clamping mechanism 400, the relative position between the grinding head 901 and the needle bar 120 is adjusted by the three-axis motion mechanism, and grinding can begin after the grinding head 901 is adjusted to a position suitable for grinding.

[0183] For example, first adjust the position of the grinding head 901 in the X-axis direction. Fig.18 and Fig.19 , the second locking handle 602 is in the unlocked position, and the first screw rod 607 is driven to rotate by rotating the second hand wheel 601, thereby driving the Y-axis module 700, the Z-axis module 800 and the grinding head 901 to move along the X-axis direction.

[0184] Next, adjust the position of the grinding head 901 in the Y-axis direction. Fig. 20 , Fig.21 and Fig. 22 , the third locking handle 702 is in the unlocked position, and the second screw rod 707 is driven to rotate by rotating the third hand wheel 701, thereby driving the Z-direction module 800 and the grinding head 901 to move along the Y-axis direction.

[0185] Finally, adjust the position of the grinding head 901 in the Z-axis direction. Fig.23 , Fig.24 , Fig.25 and Fig.26 , the fourth locking handle 802 is in the unlocking position, and the third screw rod 807 is driven to rotate by rotating the fourth hand wheel 801, thereby driving the grinding head 901 to move along the Z-axis direction.

[0186] When the grinding head 901 moves to an initial grinding position suitable for grinding, grinding can begin. While grinding, the second hand wheel 601 can continue to be rotated to drive the first screw 607 to rotate, thereby driving the Y-axis module 700, the Z-axis module 800 and the grinding head 901 to move together along the X-axis direction, thereby synchronously grinding the multiple needle bars 120 distributed in the X-axis direction.

[0187] It is understandable that the above-mentioned hand wheels can be replaced by power components such as motors, so that the motion trajectory of the grinding head 901 can be more accurately controlled by the motor.

[0188] like Figure 27-Figure 30As shown, a liquid path mechanism 500 is provided on the base 100, which is used for spraying cutting fluid to the needle bar 120 during the grinding process, and has the following functions: on the one hand, it is used to cool the needle tip part to prevent the metal surface of the needle tip part from high-temperature oxidation and the appearance of a "rainbow" cutting surface; on the other hand, it can increase lubrication and reduce the wear of the grinding head 901; on the third hand, it can clean and reduce dust. The cutting fluid can wash away the grinding chips on the processing surface and the needle bar clamping mechanism 400, and also prevent the tiny grinding chips from raising dust and polluting the workshop environment during grinding.

[0189] Specifically, Figure 1 and Fig. 27 As shown, the liquid circuit mechanism 500 includes a liquid storage tank 501 , a pump body 503 , a pipeline 502 , and a nozzle 504 at the end of the pipeline 502 . The nozzle 504 is located above the grinding head 901 .

[0190] The liquid storage tank 501 is disposed on the base 100 and is located on one side of the side plate 202 of the bracket 200 . The capacity of the liquid storage tank 501 is greater than or equal to 8L.

[0191] One end of the pipeline 502 is fluidically connected to the liquid storage tank 501, and the other end of the pipeline 502 is fluidically connected to the nozzle 504 through the pump body 503. The cutting fluid in the liquid storage tank 501 can be transported to the nozzle 504 through the pipeline 502 through the pump body 503, and the nozzle 504 can spray the cutting fluid onto the needle rod.

[0192] In order to prevent the cutting fluid from remaining in the pump body 503 for a long time and damaging the pump core or pump membrane, the cutting fluid delivery method can be an indirect delivery method or a non-contact delivery method. In the indirect delivery method, the pump body 503 uses a liquid pump (such as a peristaltic pump) for infusion, and the cutting fluid is delivered through the peristaltic tube in the peristaltic pump head; in the non-contact delivery method, the pump body 503 uses an air pump for infusion, that is, the pump body 503 pumps air into the liquid storage tank 501, and uses air pressure to press the cutting fluid out of the liquid storage tank 501.

[0193] In one embodiment, Fig.28 and Fig.29 , the pump body 503 can be a liquid pump. Accordingly, the liquid storage tank 501 includes a tank body 5011, and the upper end of the tank body 5011 is respectively provided with a liquid outlet 5012 and a liquid injection port 5014, and the tank body 5011 is provided with a liquid outlet pipe 5015, and the liquid outlet 5012 is respectively connected with the liquid outlet pipe 5015 in the tank body 5011 and the pipeline 502 outside the tank body 5011. The liquid outlet 5012 can be provided with a stainless steel quick plug connector to facilitate connection and disassembly with the pipeline 502. When the cutting fluid in the tank body 5011 is insufficient, the cutting fluid can be added to the tank body 5011 through the liquid injection port 5014.

[0194] like Fig.28As shown, the liquid outlet pipe 5015 can be a hard pipe, and its end has an oblique opening 5016 to facilitate the cutting fluid to be fully discharged from the tank body 5011. Fig.29 As shown, the liquid outlet pipe 5015 may also be a flexible pipe, and a liquid outlet pipe counterweight 5019 is provided at its end. The liquid outlet pipe counterweight 5019 can make the end of the flexible pipe located at the bottom of the tank body 5011, preventing the liquid outlet pipe 5015 from floating in the tank body 5011 or tilting out of the liquid surface, so as to facilitate the cutting fluid to be fully discharged from the tank body 5011.

[0195] like Fig.29 As shown, a liquid level sensor 5013 may be provided on the tank body 5011, and the liquid level sensor 5013 may monitor the liquid level of the cutting fluid in the tank body 5011. When the liquid level is lower than a predetermined value, that is, the cutting fluid in the tank body 5011 is insufficient, the liquid level sensor 5013 may send an electrical signal. Optionally or additionally, windows 5017 may be provided on the front and rear sides of the tank body 5011. The windows 5017 are made of a transparent material and are marked with liquid level scale lines 5018. The real-time liquid level of the cutting fluid in the tank body 5011 may be visually observed through the windows 5017.

[0196] In another embodiment, if Fig.30 As shown, the pump body 503 may also be an air pump. Accordingly, the liquid storage tank 501 includes a tank body 5011, on which a liquid outlet 5012, a liquid level sensor 5013, a liquid injection port 5014, an air inlet 501C, a one-way valve 501B and a safety valve 501A are provided.

[0197] exist Fig.30 In the illustrated embodiment, the pump body 503 pumps air into the liquid storage tank 501 , and uses the air pressure to press the cutting fluid out of the liquid storage tank 501 , so the liquid outlet 5012 can be directly connected to the nozzle 504 .

[0198] and Fig.28 and Fig.29 The embodiment shown is similar, Fig.30 The tank body 5011 is provided with a liquid outlet pipe 5015 , which may be a hard pipe with an oblique opening 5016 or a flexible pipe with a liquid outlet pipe counterweight 5019 . The liquid outlet pipe 5015 is in fluid communication with the liquid outlet 5012 so as to deliver the liquid in the tank body 5011 to the pipeline 502 .

[0199] and Fig.28 and Fig.29 The embodiment shown is similar, Fig.30 The tank body 5011 shown may be provided with components such as a liquid level sensor 5013 and / or a window 5017 for indicating the real-time liquid level of the cutting fluid in the tank body 5011 .

[0200] and Fig.28 and Fig.29The embodiment shown differs in that Fig.30 The tank body 5011 shown is provided with an air inlet 501C, a one-way valve 501B and a safety valve 501A. The one-way valve 501B is provided on the air inlet 501C, and the air inlet 501C is used to be connected to the positive pressure port of the pump body 503.

[0201] It is understandable that when the pump body 503 is working normally, it is necessary to ensure that its positive pressure port is connected to the air inlet 501C on the tank body 5011, so as to use air pressure to press the cutting fluid out of the liquid storage tank 501. However, it is found in practice that there may be an erroneous operation of connecting the negative pressure port of the pump body 503 to the liquid outlet 5012 on the tank body 5011, and this erroneous operation may cause the problem of back-sucking of the cutting fluid. In order to avoid this problem, a one-way valve 501B is provided on the air inlet 501C to ensure that the gas can flow from the pump body 503 to the tank body 5011, and the liquid in the tank body 5011 will not flow to the pump body 203, so that the phenomenon of back-sucking of the cutting fluid due to the erroneous connection between the negative pressure port of the pump body 503 and the liquid outlet 5012 can be prevented.

[0202] The safety valve 501A has a pressure relief function, which can prevent the outlet pipe 5015 from being blocked or bent and causing a safety accident. Before adding cutting fluid to the tank body 5011 through the liquid injection port 5014, the pressure can be manually relieved by opening the safety valve 501A. For example, the residual pressure in the tank body 5011 can be relieved by manually pulling the pull ring of the safety valve 501A.

[0203] Please continue to see Figure 1 and Fig. 27 The pipeline 502 includes a first tube 5021 connected between the pump body 503 and the liquid outlet 5012 of the tank body 5011 and a second tube 5022 connected between the pump body 503 and the nozzle 504, wherein a portion of the second tube 5022 extends along the arrangement direction of the plurality of needle rods 120, such as Fig. 27 As shown, a portion of the second tube 5022 extends along the X-axis direction.

[0204] Since the grinding head 901 needs to grind each needle rod 120 separately, the grinding head 901 will move along the X-axis direction during the grinding process, so the second tube 5022 also needs to move along the X-axis direction. In order to avoid the second tube 5022 from bending in the long-stroke movement process, a drag chain assembly 505 is provided on the base 100, such as Fig. 27 Please combine Figure 1 The drag chain assembly 505 is located at one side of the X-direction module 600 and is connected to the X-direction module 600 or the Y-direction module 700 , and the second tube 5022 passes through the drag chain assembly 505 .

[0205] Specifically, Fig.31As shown, the fixed end of the drag chain assembly 505 is installed on the base plate 101, and the movable end thereof is connected to the first movable seat 603. When the first movable seat 603 drives the Y-axis module 700, the Z-axis module 800 and the grinding mechanism 900 to move along the X-axis, the movable end of the drag chain assembly 505 also moves with the first movable seat 603, thereby protecting the second tube 5022 in the drag chain assembly 505.

[0206] In addition, a protective tube 5051 is also provided at the moving end of the drag chain assembly 505, and the protective tube 5051 is connected to the first moving seat 603 of the X-axis module 600 and extends along the Z-axis direction. The second tube 5022 first passes through the drag chain assembly 505 and enters the protective tube 5051, and after passing through the protective tube 5051, the second tube 5022 can be arranged on the Z-axis module 800 along the Z-axis direction and can be connected to the nozzle 504 on the Z-axis module 800. The protective tube 5051 can prevent the chain links of the drag chain assembly 505 from causing wear to the second tube 5022 during the movement.

[0207] like Fig.32 As shown, the nozzle 504 is located on the third slide 806 of the Z-axis module 800 and can move along the X-axis and Y-axis directions with the third slide 806. The nozzle 504 can be made of a plastic bamboo tube or a stainless steel bellows structure, so that it has the characteristics of flexible universal adjustment.

[0208] A slide groove or other structure may be provided on the side of the third slide 806 , and the nozzle 504 may be fixed in the slide groove, and its position in the slide groove may be adjusted as required.

[0209] like Fig.32 Please combine Fig.26 A pipeline fixing ring 8064 is also provided on the side of the third slide 806 of the Z-direction module 800. The number of the pipeline fixing rings 8064 can be multiple, and the multiple pipeline fixing rings 8064 can be arranged at intervals along the extension direction of the third slide 806. The portion of the second pipe 5022 extending along the third slide 806 can be fixed on the third slide 806 through the pipeline fixing ring 8064.

[0210] In addition, if Figure 1 As shown, a collecting groove 110 is also provided on the base plate 101 of the base 100. The collecting groove 110 is located below the needle bar clamping mechanism 400 and is used to collect cutting waste such as cutting fluid waste and grinding chips.

[0211] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A needle grinding device, characterized in that: include: Bracket (200); A needle bar clamping mechanism (400) is rotatably connected to the support (200), and the needle bar clamping mechanism (400) is capable of clamping the needle bars (120) of a plurality of needle tools, and the needle bars (120) of the plurality of needle tools are sequentially arranged along a first direction; an angle adjustment mechanism (300), which is arranged on the support (200) and connected to the needle bar clamping mechanism (400), and the angle adjustment mechanism (300) can drive the needle bar clamping mechanism (400) to rotate relative to the support (200) to adjust the inclination angle of the needle bar (120) of the needle tool; as well as A grinding mechanism (900), wherein the grinding mechanism (900) comprises a grinding head (901), wherein one of the grinding head (901) and the needle bar clamping mechanism (400) is capable of moving relative to the other along one or more directions of the first direction, a second direction and a third direction respectively perpendicular to the first direction, so that the grinding head (901) can sequentially grind the needle bars (120) of a plurality of needles having the preset angles.

2. The needle grinding device according to claim 1, characterized in that: The needle bar clamping mechanism (400) comprises: A first clamping plate (402); a second clamping plate (403) disposed opposite to the first clamping plate (402), wherein the needle bars (120) of a plurality of needles are clamped in sequence between the first clamping plate (402) and the second clamping plate (403); and a rotating shaft (401), the rotating shaft (401) being fixedly connected to one of the first clamping plate (402) and the second clamping plate (403), and being rotationally connected to the other; the rotating shaft (401) is also connected to the angle adjustment mechanism (300); The first clamping plate (402) and the second clamping plate (403) are configured such that when they are locked with each other, they can rotate along with the rotating shaft (401); when they are unlocked with each other, one of the first clamping plate (402) and the second clamping plate (403) can rotate relative to the other with the rotating shaft (401) as the rotation axis.

3. The needle grinding device according to claim 2, characterized in that: The needle bar clamping mechanism (400) further comprises: A hinge support frame (404), comprising a first arm (4041) and a second arm (4042) which are rotatably connected, wherein the first arm (4041) is also rotatably connected to the first clamping plate (402), and the second arm (4042) is rotatably connected to the second clamping plate (403); and A rotation locking mechanism (410) includes a clip (406), wherein the clip (406) is rotationally connected to one of the first clamping plate (402) and the second clamping plate (403), and the clip (406) is able to perform a locking operation when it is rotated to contact the other of the first clamping plate (402) and the second clamping plate (403).

4. The needle grinding device according to claim 2 or 3, characterized in that: A needle groove (4032) is provided on one of the first splint (402) and the second splint (403), and the needle groove (4032) is used to accommodate the needle rod (120) of the needle. A protective pad (409) is also provided between the first splint (402) and the second splint (403), and the protective pad (409) covers the needle rod (120) of the needle.

5. The needle grinding device according to claim 2 or 3, characterized in that: The angle adjustment mechanism (300) comprises one or more of a gear transmission mechanism, a synchronous belt transmission mechanism, a gear rack transmission mechanism, a sprocket transmission mechanism, a worm gear transmission mechanism and a screw transmission mechanism.

6. The needle grinding device according to claim 5, characterized in that: The angle adjustment mechanism (300) comprises: a gear assembly (31) fixed on the top of the bracket (200), the gear assembly (31) comprising a driving gear (301) and a driven gear (302) meshing with each other, the axial directions of the driving gear (301) and the driven gear (302) being perpendicular to each other; and A synchronous belt assembly (32) is fixed on the side of the bracket (200), and the synchronous belt assembly (32) includes a driving synchronous belt pulley (306), a driven synchronous belt pulley (307), a synchronous belt (309) connecting the driving synchronous belt pulley (306) and the driven synchronous belt pulley (307), and a tensioning wheel (308), wherein the driving synchronous belt pulley (306) is fixedly connected to the driven gear (302), the driven synchronous belt pulley (307) is rotationally connected to the rotating shaft (401), and the tensioning wheel (308) is located on one side of the synchronous belt (309) and is used to adjust the tension of the synchronous belt (309).

7. The needle grinding device according to claim 6, characterized in that: The angle adjustment mechanism (300) further comprises an angle display compass (204) located on the side of the bracket (200) and fixedly connected to the rotating shaft (401), or an angle sensor connected to the rotating shaft (401).

8. The needle grinding device according to any one of claims 1 to 3, characterized in that: It also includes a base (100), the grinding mechanism also includes a three-axis motion mechanism, the three-axis motion mechanism includes an X-axis module (600) arranged on the base (100), a Y-axis module (700) slidably connected to the X-axis module (600), and a Z-axis module (800) slidably connected to the Y-axis module (700), and the grinding head (901) or the bracket (200) is slidably arranged on the Z-axis module (800); Wherein, the X-direction module (600), the Y-direction module (700) and the Z-direction module (800) all include a screw mechanism.

9. The needle grinding device according to any one of claims 1 to 3, characterized in that: It also includes a liquid circuit mechanism (500), the liquid circuit mechanism (500) including a pump body (503) located on the bracket (200) and a pipeline (502) connected to the pump body (503), the end of the pipeline (502) is connected to a nozzle (504), and the nozzle (504) is located above the grinding head (901).

10. The needle grinding device according to claim 9, characterized in that: A drag chain assembly (505) is arranged on the base (100), the drag chain assembly (505) is located on one side of the X-direction module (600) and is connected to the Y-direction module (700), and the pipeline (502) runs through the drag chain assembly (505).

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