Adjusting mechanism and loading device

Abstract

The present invention relates to an adjustment mechanism and a feeding device. The adjustment mechanism is used to adjust the position of a needle, and the adjustment mechanism includes a bearing unit and a blanking unit. The bearing unit can receive the needle and includes a calibration portion for adapting the cutting edge of the needle. The blanking unit is used to drop the needle onto the bearing unit. The feeding device is used to adjust the position of the needle and feed the needle, and includes a separation mechanism, a transfer mechanism and an adjustment mechanism. The separation mechanism is used to separate the needle, and the transfer mechanism is connected to the blanking unit and can drive the blanking unit to reciprocate between the separation mechanism and the bearing unit.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device production, and particularly to an adjusting mechanism and a feeding device. Background Art

[0002] In the production process of some medical consumables, it is often necessary to perform pre-adjustment or pre-positioning operations on certain consumable components before assembly to ensure that the consumable component can be assembled with other consumable components immediately after being transferred to the next assembly station, thereby saving a large amount of unnecessary adjustment time and improving the production efficiency of the medical consumables.

[0003] Taking the production process of puncture needles represented by biopsy needles as an example, the cutting edge angles of multiple needles in the same batch can only be smoothly assembled with components such as needle hubs if they meet the preset orientation requirements and the cutting edge orientations of each needle are kept consistent. The process of achieving the above goal is called the pre-adjustment of the needle state.

[0004] The existing puncture needle production equipment or methods mainly have the following problems: it is difficult and time-consuming to adjust the cutting edge orientation angle of the needles, and ideal results may not be obtained even after repeated debugging. Especially for small-sized needles, it is difficult to ensure the state consistency of the same batch; specific equipment or methods can only meet the pre-adjustment of the needle state for specific-sized needles. Once the needle size changes, it is difficult to ensure the effect of adjusting the needle state using the original equipment / methods. For example, it is difficult to adjust the state of large-sized needles. Increasing the adjustment power is likely to damage the cutting edge of the needles or the adjustment device. The adjustment effect of small-sized needles is unstable, and the same batch of needles may also show inconsistent states after adjustment. Summary of the Invention

[0005] In view of this, it is necessary to provide an adjusting mechanism for adjusting the needle state. The adjusting mechanism includes a bearing unit and a blanking unit. The bearing unit can receive the needles and includes a calibration part for adapting to the cutting edge of the needles. The blanking unit is used to drop the needles onto the bearing unit.

[0006] The adjusting mechanism provided by the present invention can overcome the problem of poor pre-adjustment of the needle position state in the production process of existing medical consumables. By adopting the method of dropping the needle onto the bearing unit by the blanking unit, the feeding before needle adjustment is completed. This feeding method can make the needle shake or vibrate within a short time after reaching the bearing unit. At this time, the calibration part continuously contacts the edge of the needle blade until the edge of the needle blade forms a full-week contact with the calibration part. At this time, it indicates that the calibration part restricts the freedom of further movement of the needle, preventing the needle from continuing to move under the action of inertia. And the dropping feeding method can accelerate the progress of the full-week contact between the needle blade and the calibration part. By shaking or vibrating the needle, its position and / or angle relative to the calibration part are continuously adjusted, thereby increasing the probability of the edge of the needle blade fitting the calibration part, reducing the difficulty of needle position adjustment, and significantly improving the success rate of single adjustment. In some cases, even without starting the calibration part, only by the shaking or vibration of the needle in the bearing unit after being dropped, the preset position state can be achieved, thus avoiding the problem of amplifying the adjustment power and damaging the needle blade or the calibration part; in addition, whether it is a large-size or small-size needle, the position state consistency can be guaranteed after the adjustment of the same batch is completed.

[0007] In one embodiment, the calibration part is a magnetic part; or, the calibration part is a magnetizable part.

[0008] With such a setting, the magnetic part or the magnetizable part can increase the adjustment and restraint effect of the calibration part on the needle, so as to improve the firmness of the full-week fit between the needle blade and it, and at the same time increase the difficulty of the needle moving in other directions or degrees of freedom. The large-size needle is more likely to stop moving when approaching the preset position state, and the small-size needle is not easily shaken by external interference and can be more firmly maintained in its preset position state.

[0009] In one embodiment, the adjusting mechanism further includes an air flow generating unit, and the air flow generating unit has an air outlet opening towards the calibration part.

[0010] With such a setting, starting the air flow generating unit and blowing air towards the needle through the air outlet, canceling the direct contact between the physical adjusting part and the needle, can also make the edge of the needle blade fit and form a full-week fit with the calibration part faster and more firmly, and has the same adjustment and restraint effect as the calibration part provided with a magnetic part or a magnetizable part in the foregoing embodiment.

[0011] In one embodiment, the bearing unit further includes a stop part for contacting the base of the needle, and the calibration part includes a calibration plane inclined relative to the stop part. The calibration plane can be in movable contact with the tip of the needle and is used to form a full-week fit with the edge of the needle blade.

[0012] With such a setting, the stop portion can limit the degree of freedom of the movement of the needle along its axial direction, which is beneficial to the stability of the adaptation between the edge of the needle tip and the calibration portion. The calibration plane can ensure that there is no gap between the calibration portion and the edge of the needle tip after they are adapted, so there will be no problem of the needle floating relative to the calibration portion, and the smoothness of the circumferential fitting is further improved.

[0013] In one embodiment, the bearing unit further includes a guiding portion that defines a blanking space with an upward opening, and the opening width of the blanking space is greater than the width of the bottom wall of the blanking space.

[0014] With such a setting, the blanking space can make it easier for the needle to be dropped onto the bearing unit, improving the fault tolerance rate of the blanking unit for dropping the needle. Even if the position where the blanking unit drops the needle cannot be strictly guaranteed, the needle can be slidably guided by the guiding portion into the blanking space, and the guiding portion can also accelerate the needle to reach the supporting portion of the bearing unit.

[0015] In one embodiment, the area of the calibration portion for adapting to the edge of the needle tip is inclined relative to the vertical direction, and the calibration portion is at least partially higher than the bottom wall of the blanking space.

[0016] With such a setting, during the process of the needle reaching the bottom wall of the blanking space, the tip of the needle can first come into contact with the calibration portion and make a movable contact, so that the attitude adjustment of the needle can be carried out earlier, and the needle can be made to rotate spontaneously and change the angle of its edge orientation.

[0017] In one embodiment, the adjusting mechanism further includes an adjusting driving source that is connected to and capable of driving the bearing unit to vibrate.

[0018] With such a setting, after the adjusting driving source operates, it can drive the needle to shake, increasing the probability of the adaptation between the edge of the needle tip and the calibration portion, accelerating the progress of the needle reaching its preset attitude, and improving the success rate of the attitude adjustment of the needle.

[0019] In one embodiment, the bearing unit further includes a stop portion for contacting the end face of the base of the needle, and the stop portion is a magnetic member; and / or, the stop portion is a magnetizable member.

[0020] With such a setting, the stop portion obtains the function of actively adsorbing the needle and can limit the movement amplitude of the base of the needle to a certain extent. Especially when adjusting the attitude of a large-sized needle, the magnetic attraction of the stop portion can overcome the rotational inertia of the large-sized needle itself, making it easier for the needle to stop moving when it is about to reach its preset attitude, so as to avoid continuing to rotate under the action of inertia and missing its preset attitude.

[0021] In one embodiment, the adjustment mechanism also includes a negative pressure generating component and has a negative pressure channel connected to the negative pressure generating component. The negative pressure channel extends toward the carrying unit at one end relatively away from the negative pressure generating component and the air suction opening faces the blanking position of the blanking unit.

[0022] With such a configuration, after the negative pressure generating component is activated, negative pressure can be generated in the area of ​​the needle away from the blanking unit through its suction opening, so that the needle is passively adsorbed onto the supporting unit. It can also limit the difficulty of movement of the needle in other directions or degrees of freedom, thereby increasing the restraining and stopping effect on the needle.

[0023] In one embodiment, the carrying unit further includes a telescopic adjustment component and a supporting portion for carrying the needle, and the telescopic adjustment component can drive at least one of the calibration portion and the supporting portion to move relatively closer to or away from the other.

[0024] With such arrangement, the telescopic adjustment component can change the distance between the calibration portion and the supporting portion after being activated, thereby changing the loadable length of the carrier unit that can be used to carry the needle, so that needles of different specifications can be adapted.

[0025] The present invention also provides a loading device for loading and pre-positioning medical needles, the loading device comprising a separation mechanism, a transfer mechanism and the above-mentioned adjustment mechanism; the separation mechanism is used to separate the needles, the transfer mechanism is connected to the blanking unit, and can drive the blanking unit to reciprocate between the separation mechanism and the carrying unit.

[0026] The loading device provided by the present invention can first separate part or a single needle from multiple mixed and stacked needles, and then adjust the cutting edge direction of the separated needles to make them reach a preset position that meets the assembly and positioning requirements of the subsequent workstation, so that the separation and position adjustment of the needles are more orderly.

[0027] In one embodiment, the separation mechanism includes a hopper and a lifting unit. The lifting unit at least partially extends into the hopper and can be adapted to the needle, and can lift and separate the needle through reciprocating lifting motion.

[0028] With such arrangement, the separation mechanism has a high accuracy rate in separating the needles, the separation process is simple, it is not easy to cause damage to the separated needles or other needles, and it will not damage the needle tips. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a feeding device in one embodiment of the present invention at a first viewing angle;

[0030] Figure 2 for Figure 1 The partial enlarged schematic diagram of the feeding device at position X is shown;

[0031] Figure 3 Schematic structural diagram of the feeding device in a second perspective in an embodiment of the present invention;

[0032] Figure 4 is Figure 3 Partial enlarged schematic diagram of the feeding device shown at Y;

[0033] Figure 5 Schematic structural diagram of the calibration part of the adjustment mechanism in an embodiment of the present invention;

[0034] Figure 6 Schematic structural diagram of the feeding device in a third perspective in an embodiment of the present invention.

[0035] Explanation of reference numerals:

[0036] 100, adjustment mechanism; 200, feeding device; 300, needle tool;

[0037] 10, bearing unit; 11, calibration part; 111, calibration plane; 12, supporting part; 13, stopping part; 14, guiding part;

[0038] 20, blanking unit; 30, adjustment driving source; 210, separating mechanism; 211, hopper; 212, lifting unit; 220, transfer mechanism. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used herein in the description of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0041] The present invention provides an adjustment mechanism 100 and a feeding device 200 having the same, wherein the feeding device 200 is used to complete the feeding and pre-positioning of a medical needle 300, and the adjustment mechanism 100 is used to adjust the position of the medical needle 300. This embodiment takes a puncture needle represented by a biopsy needle as an example to elaborate on the structural composition and operating principle of the adjustment mechanism 100 and the feeding device 200. Unless otherwise specified, the needle 300 refers to the hollow metal needle of the biopsy needle, and it is not specifically limited to whether it belongs to the inner needle or the outer needle of the biopsy needle.

[0042] The so-called pre-positioning means that before assembling the medical needle 300 with other components (such as a needle holder), the axis of the needle 300 is first adjusted to a certain inclination angle, and the cutting edge of the needle 300 is adjusted to face a certain angle, and then it is transferred to the subsequent assembly station through the unloading device. After arriving at the assembly station, there is no need to adjust the position of the needle 300, and the component to be assembled can be directly assembled with the needle 300. Position adjustment is a pre-adjustment operation to achieve the above purpose. Through this pre-position adjustment, the waiting time for adjusting the relative position between the component to be assembled and the needle 300 to be assembled as a whole can be omitted.

[0043] In this embodiment, the needle 300 and the needle hub are assembled as a whole, and the needle hub sleeve is connected to the base of the needle 300 relatively away from its needle tip. Therefore, unless otherwise specified below, the needle hub assembly station refers to the subsequent assembly station, and the needle hub refers to the component to be assembled.

[0044] First, the feeding device 200 is introduced. The feeding device 200 includes a separation mechanism 210, a transfer mechanism 220, and an adjustment mechanism 100 provided by the present invention. The separation mechanism 210 can separate a plurality of or a single needle 300 from a plurality of needles 300, and then the transfer mechanism 220 is used to transfer the separated needle 300 to the adjustment mechanism 100, and then the adjustment mechanism 100 is responsible for completing the position adjustment of the separated needle 300, and the needle 300 that has completed the position adjustment is transferred to the needle seat assembly station by the external transfer mechanism. The transfer mechanism 220 is configured to be able to reciprocate between the separation position and the blanking position, so as to transfer the separated needles 300 one by one. The separation position refers to the temporary stop position of the needle 300 relative to the separation mechanism 210 after the separation mechanism 210 successfully separates several or a single needle 300 and waits for the transfer mechanism 220 to grab it; the dropping position refers to the temporary stop position of the needle 300 relative to the adjustment mechanism 100 when the transfer mechanism 220 drops the needle 300 to the adjustment mechanism 100.

[0045] See also Figure 1。The separating mechanism 210 includes a hopper 211 for carrying multiple needles 300 and a lifting unit 212 that can reciprocate up and down relative to the hopper 211. The hopper 211 includes two side walls that are oppositely arranged and form a V-shaped angle therebetween, and a V-shaped chute is defined between the two side walls. The side walls are used to guide the needles 300 to fall to the bottom of the V-shaped chute; the lifting unit 212 includes a positioning portion that can extend into the hopper 211 from the bottom of the V-shaped chute and is used to fit a single needle 300. The extending direction of the positioning portion is parallel to the above-mentioned side walls, and a V-shaped groove for contacting the side wall of the needle 300 is defined in the portion of the positioning portion that extends into the hopper 211. Each time the lifting unit 212 extends into the V-shaped chute and continues to move upward, it can lift a single needle 300 through the positioning portion and separate it from other needles 300, as long as there are an appropriate amount of needles 300 at the bottom of the V-shaped chute at any time.

[0046] Further, the positioning portion is inclined relative to the horizontal direction, which means that there is a height difference between the two ends of the positioning portion in the vertical direction; the separating mechanism 210 further includes an anti-detachment portion, and at least a part of the anti-detachment portion is located at the lower end of the positioning portion in the vertical height. Therefore, when the lifting unit 212 obtains a single needle 300, due to the self-weight of the needle 300, there is a height difference between the two ends of the needle 300 located on the positioning portion, and the end of the needle 300 relatively close to the ground abuts against the anti-detachment portion. In this way, when separating the needles 300 of the same batch / specification, each needle 300 can maintain the same and definite stopping position in the positioning portion, so that the transfer mechanism 220 can grasp the same specific clamping position on the needle 300 each time.

[0047] Furthermore, in this embodiment, the hopper 211 is also inclined relative to the horizontal direction, and the inclination angle is the same as that of the positioning portion: in the bottom wall of the V-shaped chute, the height corresponding to the near-ground end of the positioning portion is lower than the height corresponding to the far-ground end of the positioning portion; the anti-detachment portion further extends to the opening edge of the V-shaped chute on the side relatively close to the ground to stop the multiple needles 300 in the hopper 211. Preferably, the bottom wall of the V-shaped chute is parallel to the extending direction of the positioning portion.

[0048] The following introduces the adjustment mechanism 100, which includes a bearing unit 10 and a blanking unit 20. After the transfer mechanism 220 obtains the needle tool 300 and reaches the blanking position, the needle tool 300 is directly dropped onto the bearing unit 10. The bearing unit 10 includes a supporting portion 12 for laterally supporting the needle tool 300 and a calibration portion 11 for adapting to the edge of the cutting edge of the needle tool 300. The two cooperate together to hold a single needle tool 300. The supporting portion 12 can make the tip of the needle tool 300 falling thereon face the calibration portion 11. After the needle tool 300 is dropped onto the bearing unit 10, it does not immediately reach a stable state of being stationary relative to the supporting portion 12, but first shakes or vibrates. At this time, the calibration portion 11 applies a reaction force to the edge of the cutting edge by actively contacting the edge of the cutting edge of the needle tool 300 to change the position state of the needle tool 300, and the orientation angle of the cutting edge of the needle tool 300 changes accordingly until the edge of the cutting edge is in fixed contact with the calibration portion 11. At this time, the calibration portion 11 is fixedly adapted to the edge of the cutting edge of the needle tool 300, and the needle tool 300 is stationary relative to the supporting portion 12 and thus is stably held by the bearing unit 10. The blanking unit 20 is installed on the transfer mechanism 220 in a follow-up manner to move synchronously with the transfer mechanism 220, and includes a jaw that can switch the opening and closing angle. The jaw is released when it reaches above the bearing unit 10.

[0049] Please refer to Figures 3 to 5 . As shown in the figure, in this embodiment, when the blanking unit 20 reaches the blanking position directly above the bearing unit 10, its moving speed is reduced to zero to vertically drop the needle tool 300; the supporting portion 12 defines a needle-loading groove extending along a straight-line trajectory towards the calibration portion 11, and the side wall and bottom wall of the needle-loading groove limit the freedom degree of the radial movement of the needle tool 300; the calibration portion 11 has a preset inclination angle relative to the extending direction of the supporting portion 12 / the needle-loading groove, and this inclination angle is the same as the inclination angle of the cutting edge of the needle tool 300 relative to the axis of the needle tool 300, and the area of the calibration portion 11 for adapting to the cutting edge of the needle tool 300 is at least partially higher than the bottom wall of the needle-loading groove.

[0050] As a preferred method, the calibration portion 11 includes a calibration plane 111 for the edge of the cutting edge of the needle tool 300 to fit around it in a full circle. The ellipse or an ellipse-like figure formed by enclosing the cutting edge of the needle tool 300 can be entirely located within the calibration plane 111, and this calibration plane 111 is at least partially higher than the bottom wall of the needle-loading groove. Since puncture needles represented by biopsy needles have been standardized, the angle between the plane where the edge of the cutting edge of the needle tool 300 is located and the axis of the needle tool 300 is a standard value. Therefore, in this embodiment, the inclination angle of the calibration plane 111 relative to the extending direction of the supporting portion 12 / the needle-loading groove is the angle between the plane where the edge of the cutting edge of the needle tool 300 is located and the axis of the needle tool 300. The inclination trend of the calibration plane 111 makes the cutting edge face the ground obliquely after the edge of the cutting edge of the needle tool 300 fits around the calibration plane 111 in a full circle.

[0051] The adjustment principle of the adjustment mechanism 100 is as follows: When the blanking unit 20 releases the jaw and throws the needle tool 300, the tip of the needle tool 300 can first contact the calibration part 11. When they first contact, it is a point contact form. At this time, the calibration part 11 applies a thrust to the needle tool 300. Since the edge of the needle tool 300 is beveled, the needle tool 300 instantly becomes in an unbalanced state and generates irregular shaking or vibration under the action of the force of the calibration part 11. At this time, the movement of the needle tool 300 includes a component of circumferential rotation around its axis, which will change the edge angle of the needle tool 300. Therefore, under the combined action of the self-weight of the needle tool 300 and the calibration part 11, the needle tool 300 starts to automatically adjust its position state.

[0052] Due to the inclination angle of the calibration part 11 relative to the extending direction of the supporting part 12, and the relative height relationship between the calibration part 11 and the supporting part 12, when the needle tool 300 reaches the loading unit 10, there is a probability that the edge of the needle tool 300 forms a full-circle contact with the calibration part 11. Especially when the calibration part 11 is provided with a calibration plane 111, the full-circle contact means that the plane where the edge of the needle tool 300 is located coincides with the calibration plane 111. The coincidence indicates that the needle tool 300 has reached the preset position state. At this time, the calibration part 11 restricts the freedom of further movement of the needle tool 300, especially restricts the freedom of circumferential rotation of the needle tool 300 around its axis, to prevent the needle tool 300 from continuing to move under the action of inertia; in addition, the supporting part 12 restricts the freedom of radial movement of the needle tool 300, that is, the supporting part 12 and the calibration part 11 jointly restrict the movement of the needle tool 300.

[0053] In this embodiment, the calibration part 11 and the supporting part 12 jointly support the needle tool 300 horizontally. The calibration plane 111 is inclined relative to the vertical direction, and the inclination angle between the calibration plane 111 and the horizontal plane is the same as the bevel angle of the edge of the needle tool 300.

[0054] Optionally, at least one of the supporting part 12 and the calibration part 11 includes a magnetic part; or at least one of the supporting part 12 and the calibration part 11 includes a magnetizable part. Whether it is a magnetic part or a magnetizable part, it can generate an adsorption effect on the needle tool 300. The adsorption effect is equivalent to strengthening the effect of the supporting part 12 and / or the calibration part 11 applying an external force to the needle tool 300, and provides an additional strengthening force field for the needle tool 300. As a preference, in this embodiment, the calibration part 11 is preferably and at least set as a magnetic part or a magnetizable part.

[0055] The beneficial effects of such a setting are as follows: The magnetic attraction not only improves the effect of adsorbing and fixing the needle 300, enabling the needle 300 to continue to maintain its position after reaching the preset position, but also increases the difficulty of the needle 300 moving in other degrees of freedom or directions. When the needle 300 to be adjusted is a large-sized needle 300, the magnetic attraction can make the needle 300 that is about to reach the preset position stop moving faster and more easily, reducing the adverse effects brought by its inertia; when the needle 300 to be adjusted is a small-sized needle 300, the magnetic attraction can restrain the needle 300 and improve its resistance to external interference, thereby enabling it to more stably maintain the preset position.

[0056] Optionally, the adjusting mechanism 100 further includes an air flow generating unit, which can form a region with a pressure higher than the standard atmospheric pressure, and the existence of this region can form an air flow. The air flow generating unit has an air outlet opening towards the calibration part 11, and the air flow flows through the air outlet towards the calibration part 11. When the tip of the needle 300 is located at the calibration part 11, this air flow can apply pressure to the tip of the needle 300 to make the cutting edge of the needle 300 contact and fit the calibration part 11. This adjustment method has the same adjustment and restraint effects as the magnetic attraction scheme in the above-mentioned embodiment.

[0057] Refer again to Figure 4 , the bearing unit 10 further includes two groups of guiding parts 14 respectively arranged on the supporting part 12 and the calibration part 11. Each group of guiding parts 14 includes two guiding protrusions arranged side by side, and a blanking space with an upward opening is formed between the two guiding protrusions. The opening width of the blanking space is greater than the width of the bottom wall of the blanking space. The above-mentioned needle-loading groove is the blanking space defined by the two guiding protrusions arranged on the supporting part 12; the above-mentioned calibration plane 111 is the bottom wall of the blanking space defined by the two guiding protrusions arranged on the calibration part 11.

[0058] In this embodiment, the blanking spaces respectively defined by the two groups of guiding parts 14 extend along the same linear trajectory to guide the needle 300 to enter and accommodate the needle 300. Whether it is the guiding part 14 on the supporting part 12 or the guiding part 14 on the calibration part 11, the gap width between the two guiding protrusions linearly decreases along the direction close to the bottom wall of the blanking space. Therefore, the blanking space is a V-shaped guiding groove, and both sides of the two guiding protrusions facing each other are planes inclined relative to the bottom wall of the blanking space to accelerate the guiding of the needle 300 to the blanking space.

[0059] It should be noted that the above two groups of guiding parts 14 are not necessary structures for achieving the purpose of the present invention. In some other extended embodiments, the guiding parts 14 may not be provided, or, the above two groups of guiding parts 14 may also be selectively provided, and no further elaboration will be made here.

[0060] Further, the adjusting mechanism 100 further includes an adjusting drive source 30 for connecting and driving the carrying unit 10 to vibrate. The purpose of setting the adjusting drive source 30 is to make the needle device 300 in an unbalanced state by causing the carrying unit 10 to move, and then the needle device 300 is driven by the calibration unit 11 in a way that actively contacts the tip of the needle. As long as the needle device 300 moves, there is a probability that the edge of the cutting edge of the needle device 300 will be adapted to the calibration unit 11.

[0061] Refer to again Figure 1 、 Figures 3 to 4 。In this embodiment, the calibration unit 11 and the supporting unit 12 are arranged to be able to perform relative movement. The adjusting drive source 30 is drivingly connected to the calibration unit 11 and can output a reciprocating linear displacement to the calibration unit 11 along the extending direction of the needle-holding groove located in the supporting unit 12 to drive the calibration unit 11 to reciprocate relative to the supporting unit 12. During this process, the tip of the needle device 300 repeatedly contacts and separates from the calibration unit 11. Each time the calibration unit 11 contacts the tip of the needle device 300, it can drive the needle device 300 to rotate circumferentially around its axis, and the cutting edge angle of the needle device 300 gradually becomes closer to the cutting edge orientation angle of the needle device 300 in the preset state. It can be understood that in other embodiments, the adjusting drive source 30 can also be drivingly connected to the supporting unit 12, and the trajectory direction of the reciprocating displacement generated by the adjusting drive source 30 does not necessarily have to be consistent with the extending direction of the needle-holding groove.

[0062] Further, the carrying unit 10 further includes a stop portion 13 for contacting the base of the needle device 300 (the end of the needle device 300 far from its tip). The stop portion 13 is located at one end of the supporting unit 12 relatively far from the calibration unit 11. When the needle device 300 is placed on the carrying unit 10, the stop portion 13 corresponds to the base of the needle device 300, and the stop portion 13 restricts the freedom of movement of the needle device 300 along its axial direction by contacting the base of the needle device 300. When the adjusting drive source 30 drives the calibration unit 11 and the supporting unit 12 to move relative to each other, the stop portion 13 can prevent the needle device 300 from separating from the supporting unit 12.

[0063] Preferably, the stop portion 13 includes a magnetic member; alternatively, the stop portion 13 includes a magnetizable member. After obtaining the magnetic attraction ability, the stop portion 13 can further restrict the movement of the needle device 300 under the action of inertia, making it easier for the needle device 300 to stop moving when approaching the preset state, so as to avoid continuing to move under the action of inertia and missing the preset state.

[0064] In one of the embodiments, the adjusting mechanism 100 further includes a negative pressure generating component and has a negative pressure channel communicating with the negative pressure generating component. One end of the negative pressure channel relatively far from the negative pressure generating component extends towards the carrying unit 10, and the suction opening of the negative pressure channel faces the position where the dropping unit 20 drops the needle 300. With such an arrangement, after the negative pressure generating component is started, a low-pressure environment can be formed near the suction opening of the negative pressure channel, thereby generating an adsorption force on the needle 300. The effect produced by this adsorption force is the same as that of magnetically adsorbing the needle 300 by the calibration part 11 / the supporting part 12, so it will not be elaborated here.

[0065] Preferably, in this embodiment, the negative pressure channel extends to the calibration part 11 and penetrates the area on the calibration part 11 for adapting to the needle 300, so that the adsorption force can be directly applied to the front end of the needle 300. Of course, in other embodiments, the suction opening of the negative pressure channel can also be opened on the supporting part 12, or only provided on the side of the needle 300 away from the dropping position.

[0066] Optionally, the carrying unit 10 further includes a telescopic adjusting component. The calibration part 11 and the supporting part 12 are configured to be able to move relative to each other along the extending direction of the needle-loading groove. The telescopic adjusting component can drive at least one of the calibration part 11 and the supporting part 12 to move relatively closer to or farther away from the other, so as to adjust the effective carrying length of the carrying unit 10 for carrying the needle 300, and adaptively adjust according to the specification of the incoming needle 300 to meet the requirements of providing carrying support for needles 300 of different specifications.

[0067] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0068] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as it is within the spirit and scope of the present invention, appropriate changes and variations made to the above embodiments fall within the scope of the present invention claimed.

Claims

1. An adjusting mechanism for adjusting the position state of a needle device, characterized in that, The adjusting mechanism includes a bearing unit, a blanking unit, and an adjusting driving source. The blanking unit is used to drop the needle tool onto the bearing unit. The bearing unit includes a supporting portion for supporting the needle tool, a calibrating portion for adapting to the edge of the cutting edge of the needle tool, and a stopping portion for contacting the base of the needle tool. The supporting portion and the calibrating portion cooperate together to hold a single needle tool. The supporting portion defines a needle-loading groove extending along a linear trajectory towards the calibrating portion. The calibrating portion has a calibrating plane with a preset inclination angle relative to the extending direction of the needle-loading groove. This inclination angle is the same as the inclination angle of the cutting edge of the needle tool relative to the axis of the needle tool. The calibrating plane is at least partially higher than the bottom wall of the needle-loading groove. The adjusting driving source is drivingly connected to the calibrating portion or the supporting portion, and can drive the calibrating portion or the supporting portion to reciprocate linearly along the extending direction of the needle-loading groove, so that the tip of the needle tool repeatedly contacts and separates from the calibrating portion until the edge of the cutting edge of the needle tool is in full-circle contact with the calibrating plane. The stopping portion is located at one end of the supporting portion relatively far from the calibrating portion, and the stopping portion can limit the freedom of movement of the needle tool along its axial direction by contacting the base of the needle tool.

2. The adjusting mechanism according to claim 1, characterized in that, The calibrating portion is a magnetic member; or, the calibrating portion is a magnetizable member.

3. The adjusting mechanism according to claim 1 or 2, characterized in that, The adjusting mechanism further includes an air flow generating unit, and the air flow generating unit has an air outlet opening towards the calibrating portion.

4. The adjusting mechanism according to claim 1, wherein, The bearing unit further includes two groups of guiding portions respectively arranged on the supporting portion and the calibrating portion. Each group of guiding portions includes two guiding protrusions arranged side by side. An upwardly open blanking space is defined between the two guiding protrusions. The opening width of the blanking space is greater than the width of the bottom wall of the blanking space. The needle-loading groove is the blanking space defined by the two guiding protrusions arranged on the supporting portion. The calibrating plane is the bottom wall of the blanking space defined by the two guiding protrusions arranged on the calibrating portion.

5. The adjustment mechanism according to claim 4, wherein, At least a part of the area of the calibrating portion for adapting to the cutting edge of the needle tool is higher than the bottom wall of the blanking space.

6. The adjusting mechanism according to claim 1, characterized in that, The stopping portion is a magnetic member; or, the stopping portion is a magnetizable member.

7. The adjusting mechanism according to claim 1, wherein The adjusting mechanism further includes a negative pressure generating assembly, and has a negative pressure channel communicating with the negative pressure generating assembly. One end of the negative pressure channel relatively far from the negative pressure generating assembly extends towards the bearing unit and the suction opening faces the blanking position of the blanking unit.

8. The adjusting mechanism according to claim 1, characterized in that, The bearing unit further includes a telescopic adjusting assembly, and the telescopic adjusting assembly can drive at least one of the calibrating portion and the supporting portion to move relatively closer to or farther away from the other.

9. A feeding device for feeding and pre-positioning medical needles, characterized in that, The feeding device includes a separating mechanism, a transferring mechanism, and the adjusting mechanism according to any one of claims 1 to 8. The separating mechanism is used to separate the needle tools. The transferring mechanism is connected to the blanking unit and can drive the blanking unit to reciprocate between the separating mechanism and the bearing unit.

10. The feeding device according to claim 9, characterized in that, The separating mechanism includes a hopper and a lifting unit. The lifting unit at least partially extends into the hopper and can adapt to the needle tools, and can lift and separate the needle tools through reciprocating lifting movements.

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