Needle assembly forming device and method

Abstract

The present application discloses a needle assembling and forming device to solve the problem of high assembling precision requirement of the needle and the problem of easy damage of the needle caused by installation error in the field of medical devices, and comprises a needle seat, a guide piece and a forming piece. The needle seat is provided with a plurality of needle tube mounting holes for mounting the needle tube. The guide piece is arranged on the needle seat and is provided with a plurality of guide holes corresponding to the needle tube mounting holes. The forming piece is arranged on the guide piece and is connected with a needle sleeve between the guide piece and the forming piece. The needle sleeve is provided with a positioning hole, and the guide hole is used to align the needle tube with the positioning hole and insert the needle tube into the positioning hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a needle assembly forming device and method. BACKGROUND

[0002] Multi-needle tube injection needles are mainly used for painless / micro-painful, uniform and rapid injection of trace / small amount of liquid medicine or skin care liquid into the intradermal or subcutaneous layer. Although the number of needle tubes on the needle is usually only 2-16, the metal needle tube used is very thin, with a diameter often less than 0.25 mm and a needle tip length for puncture of only 0.5-2 mm. Since the human skin, especially the face, is very soft and uneven, in the case of a very short needle tip, in order to ensure uniform injection without liquid leakage, the spacing between the needle tubes and the area occupied by the needle tube array cannot be too large.

[0003] However, the existing needle tube assembly system generally assembles the needle tubes one by one. However, the needle is too thin, and the spacing between adjacent needle tubes is small. When installing, the needle tube needs to be installed in the positioning hole of the needle sleeve. The installation of the needle and the positioning hole cannot be deviated, resulting in high precision of the needle tube assembly system. Once the installation is incorrect, it is easy to cause damage to the needle sleeve or the needle tube to be inclined, ultimately resulting in a low yield and further increasing the cost. SUMMARY

[0004] The present application provides a needle assembly forming device, which aims to at least solve one of the technical problems existing in the prior art.

[0005] The technical solution of the first aspect of the present application is a needle assembly forming device, which comprises:

[0006] A needle seat is provided with a plurality of needle tube mounting holes, and the needle tube mounting holes are used to mount the needle tubes;

[0007] A guide piece is provided on the needle seat, and the guide piece is provided with a plurality of guide holes, and the guide holes correspond one-to-one to the needle tube mounting holes;

[0008] A forming piece is provided on the guide piece, and the forming piece is connected with the guide piece through a needle sleeve, and the needle sleeve is provided with a positioning hole, and the guide hole is used to align the needle tube with the positioning hole and insert the needle tube into the positioning hole.

[0009] The technical solution of the second aspect of the present application is a needle assembly method, which comprises the following steps:

[0010] The needle tubes are distributed into the needle tube mounting holes of the needle seat;

[0011] The needle sleeve and the forming piece are installed on the guide piece, the guide piece is installed on the needle seat, the guide hole on the guide piece tends to the center of the needle tube mounting hole, and the needle tube is inserted into the positioning hole of the needle sleeve;

[0012] turning over the needle base, the guide and the forming piece, and sliding the needle tube into the forming piece;

[0013] taking out the needle base and the guide, and dispensing the needle sleeve, so that the needle tube is fixed on the needle sleeve.

[0014] Further, the guide hole comprises a first guide step and a second guide step, the first guide step is communicated with the second guide step, the inner diameter of the first guide step is continuously reduced from bottom to top, and the inner diameter of the second guide step is suitable for the diameter of the needle tube.

[0015] Further, the inner diameter of the guide hole is continuously reduced from bottom to top, the upper end of the guide hole can pass through the needle tube, and the lower end of the needle tube mounting groove is suitable for the diameter of the needle tube.

[0016] Further, the method further comprises a needle pressing step, after the needle base and the guide are taken out, the flat plates of the needle pressing device are simultaneously driven to press the plurality of needle tubes downward, so that the heights of the plurality of needle tubes are kept consistent.

[0017] Further, the forming piece is provided with a positioning groove, the positioning groove is suitable for the profile of the needle sleeve, and the positioning groove is used for matching the installation of the needle sleeve.

[0018] Further, the lower end of the needle tube mounting hole is provided with a limiting groove, the inner diameter of the limiting groove is continuously reduced from top to bottom, and the limiting block of the limiting groove is used for limiting the position of the lower end of the needle tube.

[0019] Further, the limiting groove and the needle tube mounting hole are smoothly connected.

[0020] Further, the guide and the forming piece are provided with a locking block and a locking groove matched with the locking block.

[0021] Further, the needle base is provided with a plurality of arrayed needle tube mounting holes, a plurality of arrays are uniformly distributed on the needle base, and one needle base can simultaneously process a plurality of needle tubes.

[0022] The beneficial effects of the present application are as follows.

[0023] 1. By placing the needle tube into the needle tube mounting hole, the inner diameter of the needle tube mounting hole is much larger than the diameter of the needle tube, the installation accuracy is low, the distribution can be completed by ordinary needle tube distribution device, the guiding effect of the guide piece makes the position of the needle tube vertical and the center of the position guiding hole, the needle tube aligns the positioning hole of the needle sleeve, and the needle tube is inserted into the positioning hole, after turning over the whole assembled needle seat, guide piece and forming piece, the needle tube moves downward due to gravity, the needle tube moves downward and abuts against the forming piece, the whole process only needs the guide piece to align the needle tube, and does not need too high precision requirement for the machine. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structure schematic diagram of the needle head assembly forming device of the embodiment of the application;

[0025] Figure 2 is an exploded structure schematic diagram of the needle head assembly forming device of the embodiment of the application;

[0026] Figure 3 is a cross-sectional structure schematic diagram of the needle head assembly forming device of the embodiment of the application;

[0027] Figure 4 is a structure schematic diagram of the forming piece and the needle sleeve after turning over of the embodiment of the application;

[0028] Figure 5 is a cross-sectional schematic diagram of Figure 4 ;

[0029] Figure 6 is a structure schematic diagram of the forming piece of the embodiment of the application;

[0030] Figure 7 is a schematic diagram of the second embodiment of the guide piece of the embodiment of the application;

[0031] Figure 8 is a schematic diagram of the needle pressing device of the embodiment of the application.

[0032] Corresponding reference signs:

[0033] Needle seat 100, needle tube mounting hole 110, limiting groove 120;

[0034] Guide piece 200, guide hole 210, first guide step 211, second guide step 212, locking block 220;

[0035] Forming piece 300, positioning groove 310;

[0036] Needle sleeve 400, positioning hole 410;

[0037] Needle pressing device 500;

[0038] Needle tube 600. DETAILED DESCRIPTION

[0039] The following will describe several embodiments of the present application, including the embodiments corresponding to the drawings. It should be understood that the drawings are used to assist in understanding the technical features and technical solutions of the present application, and should not be understood as limiting the scope of protection of the present application.

[0040] The concept, specific structure and generated technical effects of the present application will be described below in conjunction with the embodiments and drawings to fully understand the purpose, scheme and effect of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0041] It should be noted that unless otherwise explicitly limited, when a feature is referred to as being "fixed", "connected", "installed" to another feature, it can be directly fixed, connected to the other feature, or indirectly fixed, connected to the other feature. The words "fixed", "connected", "installed" and the like should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0042] It should be noted that the orientation or positional relationship described in the present application, such as up, down, left, right, top, bottom, front, back, inside, outside, etc., is based on the orientation or positional relationship of the drawings or embodiments, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] It should be noted that the term "and / or" used in the present application includes any combination of one or more related listed items, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. is not included in the number, above, below, etc. is understood to include the number.

[0044] It should be noted that in the present application, if the first, second is described for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.

[0045] It should be noted that unless otherwise explicitly limited, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art. The terms used in the specification are only used to describe specific embodiments, and are not intended to limit the present application.

[0046] Referring to Figures 1-8 , the basic embodiment of the first aspect of the present application provides a needle assembly forming device, comprising:

[0047] The needle base 100 is provided with a plurality of needle tube mounting holes 110 for mounting the needle tube 600.

[0048] The guide 200 is arranged on the needle base 100, and the guide 200 is provided with a plurality of guide holes 210 corresponding to the needle tube mounting holes 110.

[0049] The forming piece 300 is arranged on the guide 200, and the forming piece 300 is connected with the guide 200, and the needle sleeve 400 is arranged between the forming piece 300 and the guide 200, and the needle sleeve 400 is provided with a positioning hole 410, and the guide hole 210 is used for aligning the needle tube 600 with the positioning hole 410 and inserting the needle tube 600 into the positioning hole 410.

[0050] The needle head assembly forming device of the first aspect of the basic embodiment of the present application is characterized in that the needle tube 600 is placed into the needle tube mounting hole 110, the inner diameter of the needle tube mounting hole 110 is much larger than the diameter of the needle tube 600, the installation precision is low, the ordinary needle tube 600 distribution device can be used for distribution, the guide hole 210 of the guide 200 is used for guiding the position of the needle tube 600 to be vertical and the center of the guide hole 210, the needle tube 600 is aligned with the positioning hole 410 of the needle sleeve 400, and the needle tube 600 is inserted into the positioning hole 410, after the whole assembled needle base 100, guide 200 and forming piece 300 are turned over, the needle tube 600 moves downward due to gravity, the needle tube 600 moves downward and abuts against the forming piece 300, and the whole process only needs to align the needle tube 600 by the guide 200, and the machine does not need to have high precision.

[0051] It can be understood that the needle tube 600 distribution device can be used to grab the needle tube 600 by a mechanical device, so that the needle tube 600 is vertically arranged above the needle base 100, the needle base 100 below is moved, different needle tube mounting holes 110 are arranged below the distribution port of the needle tube 600 distribution device, the needle tube 600 distribution device is loosened, and the needle tube 600 falls into the needle tube mounting hole 110, because the needle tube mounting hole 110 is much larger than the diameter of the needle tube 600, the installation of the needle tube 600 has a large fault tolerance, and the yield is greatly improved.

[0052] The second aspect of the basic embodiment of the present application provides a needle head assembly method, which comprises the following steps.

[0053] The needle tube 600 is distributed into the needle tube mounting hole 110 of the needle base 100.

[0054] The needle sleeve 400 and the forming piece 300 are mounted on the guide 200, the guide 200 is mounted on the needle base 100, the guide hole 210 on the guide 200 makes the needle tube 600 tend to the center of the needle tube mounting hole 110, and the needle tube 600 is inserted into the positioning hole 410 of the needle sleeve 400.

[0055] Turn over the needle seat 100, the guide 200 and the forming piece 300, and make the needle tube 600 slide into the forming piece 300;

[0056] Take out the needle seat 100 and the guide 200, and glue the needle cover 400 to fix the needle tube 600 on the needle cover 400.

[0057] The needle tube 600 is placed in the needle tube mounting hole 110 which is much larger than the diameter of the needle tube 600, and the assembly precision is required to be low; the needle tube 600 tends to the center of the guide hole 210 through the guide hole 210 of the guide 200, and the center of the guide hole 210 is aligned with the positioning hole 410 and inserted into the positioning hole 410 of the needle cover 400, so that the needle tube 600 can be correspondingly mounted on the whole set; the needle seat 100, the guide 200 and the forming piece 300 are turned over, the needle tube 600 slides to the forming piece 300 due to gravity, and the needle tube 600 abuts against the lower end of the forming piece 300, at this time, the position of the needle tube 600 is the correct installation position, the needle tube 600 is fixed on the needle cover 400 through the glue dispensing process, and the flow guide plate and the flow guide pipe are installed with the needle cover 400, the installation of the multi-needle tube 600 needle is completed, the needle seat 100 and the guide 200 are taken out, and subsequent operations, glue dispensing operation and installation of the flow distribution plate and the flow guide pipe can be directly operated on the forming piece 300, without further transferring the needle tube 600, so that the operation is convenient.

[0058] It can be understood that the angle of turning over is 180 degrees.

[0059] It can be understood that glue dispensing is a process, also known as glue application, glue coating, glue pouring, glue dropping, etc., which is to apply, pour, drop electronic glue, oil or other liquids on products, so that the products can play the roles of sticking, pouring, insulating, fixing, surface smoothing, etc., and the glue dispensing here is to fix the needle tube 600 on the needle cover 400, or to fix the flow distribution plate and the flow guide pipe on the pillow cover.

[0060] In some embodiments, the step of installing the flow distribution plate and the flow guide pipe on the needle cover 400, and glue dispensing the flow distribution plate and the flow guide pipe to fix them on the needle cover 400 is further included.

[0061] It can be understood that the flow distribution plate and the flow guide pipe can refer to the published patent application No. 202020674805.5, and the corresponding structure is a nine-needle luer joint and a nine-needle baffle.

[0062] Referring to Figure 3In some embodiments, the guide hole 210 comprises a first guide step 211 and a second guide step 212, the first guide step 211 is in communication with the second guide step 212, the first guide step 211 has a decreasing inner diameter from bottom to top, and the second guide step 212 has an inner diameter suitable for the diameter of the needle tube 600. The guide hole 210 aligns the needle tube 600 with the positioning hole 410 of the needle sleeve 400, so that the needle tube 600 can be inserted through the positioning hole 410. When the guide 200 is installed, the top end of the needle tube 600 first contacts the first guide step 211, which is a conical structure that gradually shrinks upward, causing the upper end of the needle tube 600 to move towards the middle until the upper end of the needle tube 600 can pass through the second guide step 212, which is aligned with the positioning hole 410, so that the needle tube 600 can be inserted into the positioning hole 410 of the needle sleeve 400.

[0063] Referring to Figure 7 In some embodiments, the guide hole 210 has a decreasing inner diameter from bottom to top, the upper end of the guide hole 210 can pass through the needle tube 600, and the lower end of the needle tube 600 installation slot is suitable for the diameter of the needle tube 600. By limiting the upper and lower ends of the needle tube 600, the needle tube 600 can be aligned with the positioning hole 410 of the needle sleeve 400 and inserted through the positioning hole 410. Two points determine a straight line, by limiting the upper and lower ends of the needle tube 600, the needle tube 600 moves in a specified direction, the upper end of the guide hole 210 is aligned with the positioning hole 410, so that the needle tube 600 can move along the guide hole 210 and be inserted into the positioning hole 410.

[0064] Referring to Figure 8 In some embodiments, it also includes a needle pressing step, the needle presser 500 is provided with a flat plate, after the needle holder 100 and the guide 200 are removed, the flat plate of the needle presser 500 drives multiple needle tubes 600 downward at the same time, so that the heights of the multiple needle tubes 600 remain consistent. After the operation of turning over, some needle tubes 600 may not be able to continue to move due to the friction between the needle tubes 600 and the needle sleeve 400 or the guide 200. By driving the needle presser 500, the needle presser 500 abuts against the needle tube 600, driving the needle tube 600 to continue to move until it abuts against the shaped part 300, so that the heights of the multiple needle tubes are consistent, and the needle tubes can be stably output.

[0065] In some embodiments, the shaped part 300 is provided with a positioning slot 310, the positioning slot 310 is suitable for the profile of the needle sleeve 400, and the positioning slot 310 is used to cooperate with the installation of the needle sleeve 400. Through the positioning slot 310 on the shaped part 300, the needle sleeve 400 can be installed in the corresponding position, ensuring that the positioning hole 410 of the needle tube 600 corresponds to the guide hole 210 of the guide 200 one by one, so that the needle tube 600 can pass through the corresponding positioning hole 410.

[0066] In some embodiments, a limiting groove 120 is provided at the lower end of the needle tube mounting hole 110. The inner diameter of the limiting groove 120 decreases from top to bottom. The limiting block of the limiting groove 120 is used to limit the position of the lower end of the needle tube 600. The limiting groove 120 can be an inverted cone structure provided at the lower end of the needle tube mounting hole 110. The limiting groove 120 can limit the position of the lower end of the needle tube 600, thereby limiting the range of motion of the upper end of the needle tube 600, preventing the angle formed by the needle tube 600 and the inner wall of the guide hole 210 from being too large, or even perpendicular to the inner wall of the guide hole 210, making it difficult for the guide member 200 to drive the needle tube 600 to move.

[0067] In some embodiments, the limiting groove 120 and the needle tube mounting hole 110 have a smooth transition to prevent the needle tube 600 from being stuck with the wall of the needle tube mounting hole 110 , which would prevent the needle tube 600 from falling into the limiting groove 120 .

[0068] In some embodiments, one of the guide member 200 and the forming member 300 is provided with a locking block 220, and the other is provided with a locking groove that cooperates with the locking block 220. The cooperation between the locking block 220 and the locking groove enables the guide member 200 and the forming member 300 to be aligned, thereby aligning the positioning hole 410 of the needle guard 400 with the guide hole 210 of the guide member 200, allowing the needle cannula 600 to be effectively inserted into the needle guard 400, thereby improving installation accuracy.

[0069] In some embodiments, the needle hub 100 is provided with a plurality of needle tube mounting holes 110 arranged in an array, with the plurality of arrays evenly distributed along the needle hub 100. The same needle hub 100 can process multiple needles simultaneously. Each array is provided with a corresponding needle, and by providing multiple arrays on the needle hub 100, multiple needles can be processed simultaneously, thereby improving needle processing efficiency.

[0070] It can be understood that the array is arranged evenly distributed along rows and columns.

[0071] It should be noted that in this specification, terms such as "one embodiment", "some embodiments", "basic embodiment", "extended embodiment" may be used to describe several embodiments of the present invention. The specific features, structures, materials or characteristics of several embodiments may be combined in accordance with the principles and purposes of the present invention.

[0072] Although some embodiments of the present invention have been shown and described in this specification, the present invention should not be limited to the above-mentioned embodiments. As long as the technical effects of the present invention are achieved by the same or equivalent means, any changes, modifications, equivalent substitutions and equivalent variations to these embodiments within the spirit and principles of the present disclosure and without departing from the principles and purpose of the present invention should be included in the scope of protection of the present disclosure and should be deemed to fall within the scope of protection of the present invention.

Claims

1. A needle assembly and molding device, characterized in that: include: The needle seat (100) is provided with a plurality of needle tube mounting holes (110), wherein the needle tube mounting holes (110) are used for mounting the needle tube (600); A guide member (200) is provided on the needle seat (100), and the guide member (200) is provided with a plurality of guide holes (210), wherein the guide holes (210) correspond one-to-one to the needle tube mounting hole (110), and the guide hole (210) includes a first guide step (211) and a second guide step (212), wherein the first guide step (211) is connected to the second guide step (212), and the inner diameter of the first guide step (211) decreases continuously from bottom to top, and the inner diameter of the second guide step (212) is suitable for the diameter of the needle tube (600); a forming member (300) disposed on the guide member (200); a needle sleeve (400) being connected between the forming member (300) and the guide member (200); the needle sleeve (400) being provided with a positioning hole (410); the guide hole (210) being used to align the needle tube (600) with the positioning hole (410) and enable the needle tube (600) to be inserted into the positioning hole (410); After the needle seat (100), the guide member (200), the forming member (300), and the needle sleeve (400) are turned over, the needle tube (600) can move downward due to gravity and abut against the forming member (300).

2. A needle assembly method, characterized in that: The needle assembly and molding device according to claim 1 comprises the following steps: Dispensing the needle tube (600) into the needle tube mounting hole (110) of the needle seat (100); The needle sleeve (400) and the molded part (300) are mounted on the guide member (200), and the guide member (200) is mounted on the needle seat (100). The guide hole (210) on the guide member (200) allows the needle tube (600) to approach the center of the needle tube mounting hole (110), and the needle tube (600) is inserted into the positioning hole (410) of the needle sleeve (400); Turning over the needle seat (100), the guide member (200) and the forming member (300) to allow the needle tube (600) to slide into the forming member (300); The needle seat (100) and the guide member (200) are removed, and the needle sleeve (400) is glued so that the needle tube (600) is fixed on the needle sleeve (400).

3. The needle assembly method according to claim 2, characterized in that: The inner diameter of the guide hole (210) decreases continuously from bottom to top, the upper end of the guide hole (210) can pass through the needle tube (600), and the lower end of the needle tube (600) installation groove is suitable for the diameter of the needle tube (600). Through the limitation of the upper end of the guide hole (210) and the lower end of the needle tube (600) installation groove, the needle tube (600) can be aligned with the positioning hole (410) of the needle sleeve (400) and inserted into and pass through the positioning hole (410).

4. The needle assembly method according to claim 2, characterized in that: The method further includes a needle pressing step, wherein after the needle seat (100) and the guide member (200) are removed, the flat plate of the needle presser (500) is used to simultaneously drive the multiple needle tubes (600) downward so that the heights of the multiple needle tubes (600) are kept consistent.

5. The needle assembly method according to claim 2, characterized in that: The molded part (300) is provided with a positioning groove (310), the positioning groove (310) is adapted to the contour of the needle sleeve (400), and the positioning groove (310) is used for cooperating with and installing the needle sleeve (400).

6. The needle assembly method according to claim 2, characterized in that: A limiting groove (120) is provided at the lower end of the needle tube mounting hole (110), wherein the inner diameter of the limiting groove (120) decreases continuously from top to bottom, and the limiting block of the limiting groove (120) is used to limit the position of the lower end of the needle tube (600).

7. The needle assembly method according to claim 6, characterized in that: There is a smooth transition between the limiting groove (120) and the needle tube mounting hole (110).

8. The needle assembly method according to claim 2, characterized in that: The guide member (200) and the forming member (300) are each provided with a locking block (220) on one side and a locking groove matched with the locking block (220) on the other side.

9. The needle assembly method according to claim 2, characterized in that: The needle seat (100) is provided with a plurality of needle tube mounting holes (110) arranged in an array, and the plurality of arrays are evenly distributed on the needle seat (100), so that the same needle seat (100) can process a plurality of needles at the same time.

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