Metal capillary tube cutting apparatus

Abstract

The application provides a metal capillary tube cutting device, and relates to the field of precise metal tube processing equipment. The metal capillary tube cutting device comprises a base, a cutting mechanism and a fixing mechanism. The cutting mechanism is installed on the base and comprises a rotatable cutting tool. The rotation center line of the cutting tool is arranged along a first direction. The fixing mechanism is movably installed on the base and is configured to be reciprocally movable along a second direction. The second direction intersects the first direction. The fixing mechanism is provided with a plurality of metal capillary tube mounting grooves which are arranged at intervals along the second direction. The metal capillary tube can be uniformly and stably fixed, and the cutting efficiency for a large number of metal capillary tubes can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of precision metal tube processing equipment, and more specifically, to a metal capillary cutting device. Background Technology

[0002] Metal capillaries such as sodium hypotubes and puncture needles are widely used in medical devices (such as interventional catheters, biopsy needles, and injection needles), precision instruments, and microfluidic chips due to their thin walls, small inner diameters, and high precision requirements. In these applications, it is usually necessary to cut long metal capillaries into a large number of short tubes of uniform length with clean cuts and no burrs.

[0003] In existing technologies, the cutting of such metal capillaries mainly relies on the following methods: 1. Operators use specialized rotary tube cutters or precision grinding wheels to manually fix one tube at a time and perform rotary cutting. Although this method uses simple tools, its efficiency is extremely low, which cannot meet the needs of mass production. Furthermore, uneven manual force can easily lead to tube end deformation, burrs, or indentations, resulting in unstable cut quality and affecting the tip performance and safety of the product (especially the puncture needle). At the same time, repetitive operations can easily cause operator fatigue, further exacerbating quality fluctuations. 2. Using simple clamps in conjunction with motor-driven grinding wheels or lasers for cutting. Compared to purely manual cutting, this method improves the cut quality, but it is essentially still a "one clamp, one cut" cycle, which can only process one tube at a time. The loading and unloading time accounts for a high percentage of the total time, and the overall efficiency improvement is limited. The equipment utilization rate is low, and for large-volume orders, multiple machines need to be connected in parallel or run continuously for a long time, occupying space and resources. 3. Some production staff have attempted to create simple V-blocks or multi-groove fixtures to clamp multiple pipes at once, and then use large cutting equipment for overall cutting. However, these simple fixtures are difficult to apply uniform and appropriate clamping force to each tiny capillary, resulting in uneven clamping force. If the clamping is too loose, the pipe will roll or shift during cutting, leading to uneven cuts or even chipping. If the clamping is too tight, it is very easy for thin-walled pipes to be flattened or deformed into an oval shape, resulting in direct product scrap. Furthermore, during clamping and cutting, closely arranged pipes may collide and rub against each other due to vibration, causing scratches on the pipe walls or loss of precision. At the same time, cutting multiple pipes at once requires the use of large cutting equipment, which also limits the improvement of efficiency. Utility Model Content

[0004] The purpose of this application is to provide a metal capillary cutting device to improve the current limited efficiency improvement in cutting a large number of metal capillaries and the uneven clamping force on the metal capillaries.

[0005] In a first aspect, embodiments of this application provide a metal capillary cutting device, comprising: a base, a cutting mechanism, and a fixing mechanism. The cutting mechanism is mounted on the base and includes a rotatable cutting tool, the rotation center line of which is arranged along a first direction. The fixing mechanism is movably mounted on the base and configured to reciprocate along a second direction, the second direction intersecting the first direction. The fixing mechanism is provided with a plurality of metal capillary mounting grooves spaced apart along the second direction.

[0006] In the above implementation process, this application sets a cutting tool that rotates along the rotation center line in the first direction and a fixing mechanism that reciprocates along the second direction, with the second direction intersecting the first direction. Multiple metal capillary mounting slots are arranged at intervals along the second direction on the fixing mechanism, which can fix each metal capillary uniformly and stably, reducing the rolling and displacement of the metal capillary during cutting. When the cutting tool rotates along the rotation center line in the first direction, the fixing mechanism that fixes multiple metal capillary tubes moves back and forth along the second direction. Without the use of large cutting equipment, a large number of metal capillary tubes can be cut efficiently with good cutting quality.

[0007] In one possible implementation, the angle between the first direction and the second direction is 80° to 100°.

[0008] This application sets the angle between the first direction and the second direction to 80°~100°. When the fixing mechanism with the fixed metal capillary moves back and forth along the second direction, the fixed metal capillary can be cut by the cutting tool that rotates along the rotation center line of the first direction to obtain the desired metal capillary.

[0009] In one possible implementation, the angle between the first direction and the second direction is 90°.

[0010] This application sets the angle between the first direction and the second direction to 90°, and the rotating cutting tool can make a vertical cut on the metal capillary to obtain a metal capillary with a straight cut.

[0011] In one possible implementation, a guide rail extending in a second direction is provided on the base, and a fixing mechanism is provided on the guide rail.

[0012] This application achieves efficient cutting of a large number of metal capillaries without the need for large cutting equipment by setting a guide rail extending in a second direction on the base and having the fixing mechanism reciprocate in the second direction via the guide rail.

[0013] In one possible implementation, the fixing mechanism includes a mounting base and a movable pressure block. The metal capillary mounting groove is disposed on the mounting base, which is disposed on a guide rail. The movable pressure block is disposed on the side of the mounting base near the metal capillary mounting groove for closing or opening the metal capillary mounting groove.

[0014] This application provides a movable pressure block on the side of the mounting base near the metal capillary mounting groove. After the metal capillary is installed in the metal capillary mounting groove, the movable pressure block closes the metal capillary mounting groove, which can uniformly and stably press and fix the metal capillary installed in the metal capillary mounting groove, thus facilitating better cutting quality of the metal capillary.

[0015] In one possible implementation, the movable pressure block has a protrusion on its surface facing the metal capillary mounting groove. When the movable pressure block closes the metal capillary mounting groove, the protrusion covers the metal capillary mounting groove.

[0016] This application provides a protrusion on the surface of the movable pressure block facing the metal capillary mounting groove. When the movable pressure block closes the metal capillary mounting groove, the protrusion covers the metal capillary mounting groove, thereby further pressing and fixing the metal capillary installed in the metal capillary mounting groove, reducing the rolling and displacement of the metal capillary during the cutting process, and ensuring the cutting quality of the metal capillary.

[0017] In one possible implementation, the movable pressure block is hinged to the mounting base.

[0018] This application uses a movable pressure block hinged to the mounting base so that the movable pressure block can close or open the metal capillary mounting slot.

[0019] In one possible implementation, the protrusion is made of rubber.

[0020] This application uses a protrusion made of rubber material to cover the metal capillary and increase friction, further pressing and fixing the metal capillary, reducing the rolling and displacement of the metal capillary during the cutting process, and ensuring the cutting quality of the metal capillary.

[0021] In one possible implementation, the width of the movable pressure block is not less than 1 / 2 of the width of the mounting base.

[0022] This application provides a suitable width for the movable pressure block, which helps to more securely press the metal capillary tube installed in the metal capillary tube mounting groove.

[0023] In one possible implementation, when the movable pressure block closes the metal capillary mounting slot, the width of the movable pressure block overlaps with the width of the mounting base by not less than 1 / 2.

[0024] This application provides a feature where, when the movable pressure block closes the metal capillary mounting slot, the width of the movable pressure block overlaps with the width of the mounting base by at least 1 / 2, allowing the movable pressure block to cover and press the metal capillary installed in the metal capillary mounting slot over the largest possible area, thereby further uniformly and stably pressing and fixing the metal capillary.

[0025] In one possible implementation, a protective cover is provided on the side wall of the movable pressure block away from the mounting base; when the movable pressure block closes the metal capillary mounting slot, the top edge of the protective cover is higher than the top edge of the cutting tool. This application employs a protective cover on a movable pressure block. When cutting, the protective cover can shield the cutting tool and prevent metal fragments from splashing and injuring the operator. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a front view of a metal capillary cutting device provided in an embodiment of this application.

[0028] Figure 2 for Figure 1 A magnified view of A in the middle.

[0029] Figure 3 This is a top view of a metal capillary cutting device provided in an embodiment of this application.

[0030] Icons: 1-Base; 11-Guide rail; 111-Slide rail; 112-Slider; 2-Cutting mechanism; 21-Cutting tool; 3-Fixing mechanism; 31-Metal capillary mounting groove; 32-Mounting seat; 33-Movable pressure block; 34-Protrusion; 4-Protective cover. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] Example To address the limitations in cutting large quantities of metal capillaries and the uneven clamping force, this application provides a metal capillary cutting device, such as... Figure 1As shown, it includes: a base 1, a cutting mechanism 2, and a fixing mechanism 3. The cutting mechanism 2 is mounted on the base 1 and includes a rotatable cutting blade 21. The rotation center line of the cutting blade 21 is set along a first direction. The fixing mechanism 3 is movably mounted on the base 1 and configured to reciprocate along a second direction, which intersects with the first direction. The fixing mechanism 3 is provided with a plurality of metal capillary mounting grooves 31 arranged at intervals along the second direction.

[0038] A cutting tool 21 is provided that rotates along the rotation center line in the first direction, and a fixing mechanism 3 is provided that reciprocates along the second direction, intersecting the first direction. Multiple metal capillary mounting slots 31 are arranged at intervals along the second direction on the fixing mechanism 3, which can fix each metal capillary uniformly and stably, reducing the rolling or displacement of the metal capillary during the cutting process, and also reducing the mutual collision and friction between the metal capillary. When the cutting tool 21 rotates along the rotation center line in the first direction, the fixing mechanism 3, which fixes multiple metal capillary, moves back and forth along the second direction, which can cut multiple metal capillary arranged at intervals in the second direction. It can efficiently cut a large number of metal capillary without the need for large cutting equipment, and has good cutting quality.

[0039] In some embodiments, the angle between the first direction and the second direction is 80° to 100°. For example, the angle between the first direction and the second direction can be, but is not limited to, 80°, 85°, 90°, 95°, or 100°. By setting a suitable intersection angle between the first direction and the second direction according to actual needs, when the fixing mechanism 3, to which the metal capillary is fixed, reciprocates along the second direction, the fixed metal capillary can be cut by the cutting tool 21, which rotates along the rotation center line of the first direction, to obtain the desired metal capillary.

[0040] In some embodiments, the angle between the first direction and the second direction is 90°. Further setting the angle between the first direction and the second direction to 90° allows the rotating cutting tool 21 to perform perpendicular cutting on the metal capillary, resulting in a metal capillary with a straight cut.

[0041] In some embodiments, the cutting mechanism 2 is detachably mounted on the base 1. For example, the cutting mechanism 2 may be detachably mounted on the base 1 using, but is not limited to, bolts or clips. This facilitates the replacement of the cutting mechanism 2 as needed, or the movement of its fixed position to adjust the cutting blade 21 to a suitable location for efficient cutting.

[0042] In some embodiments, such as Figure 2As shown, the metal capillary mounting groove 31 extends along the first direction in its length direction, and both ends of the metal capillary mounting groove 31 are connected to the outside. In some embodiments, both ends of the metal capillary mounting groove 31 can be open structures. In other embodiments, at least one end of the metal capillary mounting groove 31 may have a limiting hole. Specifically, the end of the metal capillary mounting groove 31 near the cutting mechanism 2 has a limiting hole. When installing the metal capillary, the metal capillary is installed in the metal capillary mounting groove 31 and passes through the limiting hole. The metal capillary mounting groove 31, in conjunction with the protrusion 34 (rubber material) of the movable pressure block 33, has both circumferential and radial limiting functions, and further has an axial limiting function. At the same time, the limiting hole can further have circumferential and radial limiting functions, further reducing the rolling and displacement of the metal capillary during cutting, and also reducing the mutual collision and friction between adjacent metal capillaries.

[0043] In some embodiments, a guide rail 11 extending in a second direction is provided on the base 1, and a fixing mechanism 3 is disposed on the guide rail 11. The guide rail 11 extending in the second direction on the base 1 allows the fixing mechanism 3 to reciprocate in the second direction via the guide rail 11, enabling efficient cutting of a large number of metal capillaries without the need for large cutting equipment. In some embodiments, the fixing mechanism 3 can be manually pushed to reciprocate in the second direction via the guide rail 11. In other embodiments, the fixing mechanism 3 can also achieve reciprocating motion in the second direction using other driving methods. For example, but not limited to, a cylinder, hydraulic cylinder, or electric push rod can be used to directly push the fixing mechanism 3 to reciprocate in the second direction via the guide rail 11.

[0044] In some embodiments, the fixing mechanism 3 is detachably mounted on the guide rail 11. This facilitates replacement of the fixing mechanism 3 as needed. As an example, the fixing mechanism 3 may be detachably mounted on the guide rail 11 by means of bolts, clips, or magnets, but is not limited to these methods.

[0045] In some embodiments, such as Figures 2-3As shown, the fixing mechanism 3 includes a mounting base 32 and a movable pressure block 33. A metal capillary mounting groove 31 is disposed on the mounting base 32, which is disposed on the guide rail 11. The movable pressure block 33 is disposed on the side of the mounting base 32 near the metal capillary mounting groove 31, and is used to close or open the metal capillary mounting groove 31. By providing the movable pressure block 33 on the side of the mounting base 32 near the metal capillary mounting groove 31, after the metal capillary is installed in the metal capillary mounting groove 31, the movable pressure block 33 closes the metal capillary mounting groove 31, thus uniformly and stably pressing and fixing the metal capillary installed in the metal capillary mounting groove 31, which is beneficial for better cutting quality of the metal capillary. Specifically, the guide rail 11 includes a slide rail 111 and a slider 112, and the mounting base 32 is disposed on the slider 112. As an example, the mounting base 32 can be detachably disposed on the slider 112 by means of bolts, clips, or magnetic attraction, but is not limited to this method. To facilitate the replacement of mounting bases 32 with metal capillary mounting slots 31 of different numbers and sizes, so as to be suitable for cutting metal capillaries of different numbers and outer diameters.

[0046] In other embodiments, the metal capillary mounting groove 31 may also adopt an integrated structure with multiple spaced mounting grooves. The integrated metal capillary mounting groove 31 may be detachably mounted on the mounting base 32 using, but is not limited to, bolts, clips, or magnetic attachment. This facilitates direct replacement of the integrated metal capillary mounting groove 31 with different numbers and sizes of mounting grooves. Selecting a mounting groove size that matches the outer diameter of the metal capillary facilitates stable fixing of metal capillaries with different outer diameters, reduces rolling and displacement of the metal capillary during cutting, and also reduces collisions and friction between adjacent metal capillaries.

[0047] In some embodiments, the movable pressure block 33 has a protrusion 34 on its surface facing the metal capillary mounting groove 31. When the movable pressure block 33 closes the metal capillary mounting groove 31, the protrusion 34 covers the metal capillary mounting groove 31. The protrusion 34 on the surface of the movable pressure block 33 facing the metal capillary mounting groove 31, when the movable pressure block 33 closes the metal capillary mounting groove 31, further presses and fixes the metal capillary installed in the metal capillary mounting groove 31, reducing the rolling and displacement of the metal capillary during cutting, and ensuring the cutting quality of the metal capillary.

[0048] In some embodiments, the movable pressure block 33 is hinged to the mounting base 32. Specifically, the movable pressure block 33 and the mounting base 32 are hinged by a pin. The movable pressure block 33 is rotated about the hinge point to close or open the metal capillary mounting slot 31. In other embodiments, the movable pressure block 33 and the mounting base 32 can be connected by a guide rail 11, and the movable pressure block 33 can close or open the metal capillary mounting slot 31 by sliding on the guide rail 11. In other embodiments, a cylinder, hydraulic cylinder, or electric push rod can also be used to directly push the movable pressure block 33 to close or open the metal capillary mounting slot 31. It should be noted that when replacing the mounting base 32, the movable pressure block 33 hinged to the mounting base 32 can be replaced at the same time; alternatively, the movable pressure block 33 hinged to the mounting base 32 can be removed, the mounting base 32 can be replaced, and then the movable pressure block 33 can be installed on the mounting base 32.

[0049] In some embodiments, the protrusion 34 is made of rubber. The rubber protrusion 34 can cover the metal capillary and increase friction, further pressing and fixing the metal capillary, reducing rolling and displacement of the metal capillary during cutting, and ensuring the cutting quality of the metal capillary. It should be noted that the protrusion 34 can also be made of other materials that can increase friction and cover and press the metal capillary.

[0050] In some embodiments, the width of the movable pressure block 33 is not less than half the width of the mounting base 32. As an example, the width of the movable pressure block 33 may be, but is not limited to, half, three-quarters, or equal to the width of the mounting base 32. An appropriate width of the movable pressure block 33 facilitates increasing the width of contact with and pressing the metal capillary, thereby more securely pressing the metal capillary installed in the metal capillary mounting groove 31, while ensuring that the width of contact with and pressing the metal capillary is not excessive, thus avoiding deformation of the metal capillary under pressure.

[0051] In some embodiments, when the movable pressure block 33 closes the metal capillary mounting groove 31, the width of the movable pressure block 33 overlaps with the width of the mounting base 32 by at least 1 / 2. As an example, when the movable pressure block 33 closes the metal capillary mounting groove 31, the width of the movable pressure block 33 may overlap with, but is not limited to, 2 / 3 / 4 of the width of the mounting base 32, or the entire width of the mounting base 32. When the movable pressure block 33 closes the metal capillary mounting groove 31, the overlap between the width of the movable pressure block 33 and the width of the mounting base 32 by at least 1 / 2 allows the movable pressure block 33 to cover and press the metal capillary installed in the metal capillary mounting groove 31 over the largest possible area, further uniformly and stably pressing and fixing the metal capillary.

[0052] In some embodiments, a protective cover 4 is provided on the side wall of the movable pressure block 33 away from the mounting base 32; when the movable pressure block 33 closes the metal capillary mounting groove 31, the top edge of the protective cover 4 is higher than the top edge of the cutting tool 21. By providing the protective cover 4 on the movable pressure block 33, the protective cover 4 can shield the cutting tool 21 during cutting, preventing metal debris from splashing and injuring the operator. As an example, the protective cover 4 can be made of transparent material, allowing the cutting process to be observed during cutting.

[0053] When cutting metal capillaries, select a suitable mounting base 32 with corresponding number and size of metal capillary mounting slots 31 and install it onto the slider 112 of the guide rail 11, depending on the number and outer diameter of the metal capillaries to be cut. Alternatively, select an integrated metal capillary mounting slot 31 with corresponding number and size of mounting slots and install it onto the mounting base 32. Mark the cutting position on each metal capillary to be cut, and install the marked metal capillaries into the metal capillary mounting slots 31, one metal capillary per slot. Align the marked positions on each metal capillary with the cutting edge of the cutting tool 21. After aligning and installing the metal capillary tubes, press down the movable pressure block 33 to close the metal capillary tube mounting slot 31, so that the protrusion 34 of the movable pressure block 33 covers and presses firmly onto the metal capillary tube, so as to stably press and fix the metal capillary tube. After fixing the metal capillary tube, turn on the cutting mechanism 2 to make the cutting tool 21 rotate around the first direction as the rotation center line, and make the fixing mechanism 3 move along the guide rail 11 in the second direction, so that the marked positions of the fixed metal capillary tubes all pass through the rotating cutting tool 21, thereby efficiently cutting a large number of metal capillary tubes and cutting at the same marked position, thus obtaining short tubes with consistent length, flat cuts and no burrs, with good cutting quality.

[0054] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A metal capillary cutting device, characterized in that, include: Base; A cutting mechanism is mounted on the base, the cutting mechanism including a rotatable cutting tool, the rotation center line of the cutting tool being arranged along a first direction; A fixing mechanism is movably mounted on the base and configured to reciprocate along a second direction that intersects the first direction; the fixing mechanism is provided with a plurality of metal capillary mounting slots spaced apart along the second direction.

2. The metal capillary cutting device according to claim 1, characterized in that, The angle between the first direction and the second direction is 80°~100°.

3. The metal capillary cutting device according to claim 2, characterized in that, The angle between the first direction and the second direction is 90°.

4. The metal capillary cutting device according to any one of claims 1 to 3, characterized in that, The base is provided with a guide rail extending in a second direction, and the fixing mechanism is provided on the guide rail.

5. The metal capillary cutting device according to claim 4, characterized in that, The fixing mechanism includes a mounting base and a movable pressure block. The metal capillary mounting groove is disposed on the mounting base, which is disposed on the guide rail. The movable pressure block is disposed on the side of the mounting base near the metal capillary mounting groove, and is used to close or open the metal capillary mounting groove.

6. The metal capillary cutting device according to claim 5, characterized in that, The movable pressure block has a protrusion on its surface facing the metal capillary mounting groove. When the movable pressure block closes the metal capillary mounting groove, the protrusion covers the metal capillary mounting groove. And / or, the movable pressure block is hinged to the mounting base.

7. The metal capillary cutting device according to claim 6, characterized in that, The protrusion is made of rubber.

8. The metal capillary cutting device according to claim 5, characterized in that, The width of the movable pressure block is not less than 1 / 2 of the width of the mounting base.

9. The metal capillary cutting device according to claim 5, characterized in that, When the movable pressure block closes the metal capillary mounting slot, the width of the movable pressure block overlaps with the width of the mounting base by not less than 1 / 2.

10. The metal capillary cutting apparatus according to any one of claims 5 to 9, characterized in that, A protective cover is provided on the side wall of the movable pressure block away from the mounting base; when the movable pressure block closes the metal capillary mounting groove, the top edge of the protective cover is higher than the top edge of the cutting tool.

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