Automatic needle feeding and threading mechanism

Abstract

The utility model relates to the field of moxibustion needle assembling machines, in particular to an automatic needle feeding and threading mechanism which comprises a product conveying platform, the product conveying platform is used for conveying spring tubes, a needle feeding assembly is arranged on one side of the product conveying platform and used for storing and feeding needle bodies, and a needle threading assembly is arranged at the end, away from the conveying platform, of the needle feeding assembly. The needle threading assembly is used for pushing a needle body in the needle feeding assembly into a spring tube of the product conveying platform, a guide assembly is arranged between the needle feeding assembly and the conveying platform, the guide assembly is of a double-plate combined structure, and a tapered guide opening is formed through a guide arc surface of a movable plate and a guide arc surface of a fixed plate; the transverse deviation can be automatically corrected in the needle body pushing process. A precise needle threading hole formed by splicing the needle threading arc grooves provides a positioning reference for the tail end of a needle body, it is ensured that the needle body is completely aligned with the axial lead of a spring tube, and single needle body separation and vertical directional conveying are achieved through the reciprocating jacking action driven by the needle feeding air cylinder in cooperation with precise alignment of the needle storage groove and the needle feeding groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to moxa needle assembly machine field, especially automatic needle feeding and needle inserting mechanism. BACKGROUND

[0002] As an important tool for traditional Chinese medicine diagnosis and treatment, the structure of acupuncture needle is usually composed of a needle body and a spring tube. The needle body needs to be precisely inserted into the spring tube to form a flexible connection, which not only ensures the axial freedom of the needle body in the tube body, but also ensures the reliable reset performance after the combination of the two. This precise assembly is directly related to the use feeling and safety performance of the acupuncture needle, and is an important control point for product qualification rate.

[0003] In the industrialized production process of acupuncture needles, the traditional process adopts manual needle insertion method, which has the disadvantages of low efficiency and poor consistency. Although the automatic needle insertion equipment appeared in recent years has improved the conveying efficiency and continuity, there are still technical bottlenecks in the coaxial alignment of the needle body and the spring tube. Because the inner diameter of the spring tube is only slightly larger than the needle body, slight deviation is easy to occur under high-speed production conditions.

[0004] In the prior art, the cooperation of the needle feeding mechanism and the needle inserting mechanism mainly relies on simple linear guide, and lacks accurate axial positioning compensation mechanism. When the equipment is running for a long time and the mechanical wear is generated, or when there are slight size differences in different batches of materials, the needle body tip is difficult to accurately align with the spring tube inlet, and quality problems such as needle body bending and pipe mouth damage are easy to occur. Especially for the assembly of flexible spring tube, the position fluctuation of the pipe body in the conveying process will further amplify the alignment deviation, resulting in increased scrap rate and decreased production efficiency. UTILITY MODEL CONTENTS

[0005] In order to overcome the deficiencies of the prior art, the utility model provides an automatic needle feeding and needle inserting mechanism, which can effectively solve the misalignment of the needle body and the spring tube.

[0006] The technical scheme adopted by the utility model to solve its technical problems is:

[0007] The automatic needle feeding and needle inserting mechanism comprises a product conveying platform, the product conveying platform is used for conveying a spring tube, one side of the product conveying platform is provided with a needle feeding assembly, the needle feeding assembly is used for storing and feeding a needle body, one end of the needle feeding assembly away from the conveying platform is provided with a needle inserting assembly, the needle inserting assembly is used for pushing the needle body in the needle feeding assembly into the spring tube of the product conveying platform, and a guide assembly is arranged between the needle feeding assembly and the conveying platform.

[0008] The needle feeding assembly comprises a storage plate, a needle feeding plate and a needle feeding cylinder, the surface of the storage plate is provided with a needle storage groove, the bottom surface of the needle storage groove is provided with a needle plate opening, the needle feeding cylinder is located below the storage plate, the needle feeding plate is connected with the needle feeding cylinder and passes through the needle plate opening, the needle feeding cylinder can push the needle feeding plate to ascend and descend in the needle storage groove along the needle plate opening, one end of the needle feeding plate close to the needle storage groove is provided with a needle feeding groove, and the diameter of the needle feeding groove is consistent with the needle body;

[0009] The needle feeding assembly comprises a straight-line driving guide rail and a needle pushing plate, the needle pushing plate is connected with the straight-line driving guide rail, the straight-line driving guide rail is used to drive the needle pushing plate to move towards the needle feeding assembly, and the needle pushing plate can push the needle body in the needle feeding groove into the spring tube of the product conveying platform;

[0010] The guiding assembly comprises a fixed plate, a movable plate and a pressing cylinder, the movable plate is installed above the fixed plate through the pressing cylinder, the movable plate is aligned with the fixed plate, one end of the movable plate and the fixed plate close to each other is provided with a needle penetrating arc groove, one end of the needle penetrating arc groove close to the needle feeding plate is provided with a guiding arc surface, the pressing cylinder can drive the movable plate to be attached to the fixed plate, the needle penetrating arc grooves of the movable plate and the fixed plate can be combined to form a complete needle penetrating hole, and the guiding arc surfaces of the movable plate and the fixed plate can be combined to form a complete guiding opening.

[0011] Further, one end of the fixed plate close to the product conveying platform is provided with a positioning plate, and the edge of the positioning plate is provided with a tube body positioning opening corresponding to the needle penetrating arc groove.

[0012] Further, one end of the fixed plate close to the movable plate is provided with a raised positioning block, one end of the movable plate close to the fixed plate is provided with a positioning groove matched with the positioning block, and the side walls of the positioning block and the positioning groove are provided with corresponding guiding inclined surfaces.

[0013] Further, the storage plate is provided with two or more needle storage grooves, the needle storage grooves are equidistantly arranged, and the number and position of the needle feeding plates and the needle penetrating holes are matched with the needle storage grooves.

[0014] Further, one end of the needle feeding plate away from the needle feeding groove is provided with a synchronous pushing block, and two or more needle feeding plates are connected with the needle feeding cylinder through the synchronous pushing block.

[0015] Further, the upper side of the needle feeding assembly is provided with a needle pressing assembly, the needle pressing assembly comprises a needle pressing cylinder and a needle pressing roller, and the needle pressing roller is connected with the telescopic rod of the needle pressing cylinder through a supporting rod.

[0016] Further, the product conveying platform comprises a sliding rail, a sliding block, a lifting cylinder, a feeding plate and a driving assembly, the edge of the product conveying platform is provided with a plurality of equidistantly arranged material teeth, the feeding plate is connected with the telescopic rod of the lifting cylinder, the lifting cylinder is installed on the surface of the sliding block through a supporting seat, the sliding block can move along the surface of the sliding rail, and the driving assembly drives the supporting seat to translate through a connecting block.

[0017] Compared with the prior art, the beneficial effects of the utility model are that: setting the guiding assembly and the cooperatively matched needle feeding mechanism, the guiding assembly adopts the double-plate combined structure, the tapering guiding opening is formed through the guiding arc surfaces of the movable plate and the fixed plate, and the horizontal deviation can be automatically corrected during the needle body pushing process. The precise needle feeding hole formed by the needle feeding arc grooves is spliced, and the needle body tail end is provided with a positioning reference, so that the needle body is completely aligned with the spring tube axis, the step-by-step feeding design of the needle feeding assembly is driven by the reciprocating jacking action of the needle feeding cylinder, the precise alignment of the needle storage groove and the needle feeding groove is matched, the single needle separation and the vertical directional conveying of the needle body are realized, the feeding stability is guaranteed, the needle feeding assembly adopts the linear driving guide rail matched with the rigid needle pushing plate, and the stable linear pushing track is formed. Under the cooperation of the guiding assembly, the needle pushing plate can uniformly push the needle body along the accurately corrected axis direction, the collision and friction between the needle body and the pipe opening are significantly reduced, and the needle tip integrity is protected. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic view of the utility model;

[0019] Figure 2 It is a structural schematic view of the utility model;

[0020] Figure 3 It is a three-dimensional schematic view of the needle feeding assembly in the utility model;

[0021] Figure 4 It is a three-dimensional schematic view of the needle feeding assembly in the utility model;

[0022] Figure 5 It is a structural schematic view of the needle feeding assembly in the utility model;

[0023] Figure 6 It is Figure 5 It is a partial enlarged view of A in the utility model;

[0024] Figure 7 It is a three-dimensional schematic view of the guiding assembly in the utility model;

[0025] Figure 8 It is Figure 7 It is a partial enlarged view of B in the utility model;

[0026] Figure 9 It is a three-dimensional schematic view of the product conveying platform in the utility model;

[0027] The figure label: 1-product delivery platform, 101-slideway, 102-slideway block, 103-lifting cylinder, 104-feeding plate, 105-driving assembly, 106-supporting seat, 107-connecting block, 2-needle feeding assembly, 201-accumulator plate, 202-needle feeding plate, 203-needle feeding cylinder, 204-needle storage groove, 205-needle feeding groove, 206-synchronous push block, 207-needle pressing cylinder, 208-needle pressing roller, 3-needle threading assembly, 301-linear drive guide rail, 302-needle pushing plate, 4-guide assembly, 401-fixed plate, 402-moving plate, 403-pressing cylinder, 404-needle threading arc groove, 405-guiding arc surface, 406-positioning plate, 407-positioning block, 408-positioning groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. Figures 1-9 The automatic needle feeding and threading mechanism of the utility model will be described in detail as follows:

[0030] The automatic needle feeding and threading mechanism comprises a product delivery platform 1, the product delivery platform 1 is used for delivering spring tubes, one side of the product delivery platform 1 is provided with a needle feeding assembly 2, the needle feeding assembly 2 is used for storing and feeding needle bodies, the needle feeding assembly 2 is provided with a needle threading assembly 3 at the end away from the delivery platform, the needle threading assembly 3 is used for pushing the needle bodies in the needle feeding assembly 2 into the spring tubes of the product delivery platform 1, a guide assembly 4 is arranged between the needle feeding assembly 2 and the delivery platform, the product delivery platform 1 comprises a slideway 101, a slideway block 102, a lifting cylinder 103, a feeding plate 104 and a driving assembly 105, the edge of the product delivery platform 1 is provided with a plurality of material teeth arranged at equal intervals, the feeding plate 104 is connected with the telescopic rod of the lifting cylinder 103, the lifting cylinder 103 is installed on the surface of the slideway block 102 through a supporting seat 106, the slideway block 102 is movable along the surface of the slideway 101, and the driving assembly 105 drives the supporting seat 106 to translate through a connecting block 107.

[0031] The needle feeding assembly 2 comprises a needle storage plate 201, a needle feeding plate 202 and a needle feeding cylinder 203. The surface of the needle storage plate 201 is provided with a needle storage groove 204, the bottom surface of the needle storage groove 204 is provided with a needle plate opening, the needle feeding cylinder 203 is located below the needle storage plate 201, the needle feeding plate 202 is connected with the needle feeding cylinder 203 and passes through the needle plate opening, the needle feeding cylinder 203 can push the needle feeding plate 202 to ascend and descend in the needle storage groove 204 along the needle plate opening, and the end of the needle feeding plate 202 close to the needle storage groove 204 is provided with a needle feeding groove 205, the diameter of the needle feeding groove 205 is consistent with the needle body.

[0032] The needle feeding assembly 2 comprises a needle storage plate 201, a needle feeding plate 202 and a needle feeding cylinder 203. The surface of the needle storage plate 201 is provided with a needle storage groove 204, the bottom surface of the needle storage groove 204 is provided with a needle plate opening, the needle feeding cylinder 203 is located below the needle storage plate 201, the needle feeding plate 202 is connected with the needle feeding cylinder 203 and passes through the needle plate opening, the needle feeding cylinder 203 can push the needle feeding plate 202 to ascend and descend in the needle storage groove 204 along the needle plate opening, and the end of the needle feeding plate 202 close to the needle storage groove 204 is provided with a needle feeding groove 205, the diameter of the needle feeding groove 205 is consistent with the needle body.

[0033] The guiding assembly 4 comprises a fixed plate 401, a movable plate 402 and a pressing cylinder 403. The movable plate 402 is installed above the fixed plate 401 through the pressing cylinder 403, the movable plate 402 is aligned with the fixed plate 401, the end of the movable plate 402 and the fixed plate 401 close to each other is provided with a needle feeding arc groove 404, the end of the needle feeding arc groove 404 close to the needle feeding plate 202 is provided with a guiding arc surface 405, the pressing cylinder 403 can drive the movable plate 402 to be attached to the fixed plate 401, the needle feeding arc grooves 404 of the movable plate 402 and the fixed plate 401 can be combined to form a complete needle feeding hole, and the guiding arc surfaces 405 of the movable plate 402 and the fixed plate 401 can be combined to form a complete guiding opening.

[0034] The guiding assembly 4 is provided with a needle feeding and feeding mechanism in cooperation. The guiding assembly 4 adopts a double-plate combined structure, the guiding arc surfaces 405 of the movable plate 402 and the fixed plate 401 form a tapered guiding opening, and the horizontal deviation in the needle body pushing process can be automatically corrected. The precise needle feeding hole formed by the needle feeding arc grooves 404 provides a positioning reference for the end of the needle body, ensures that the needle body is completely aligned with the spring pipe axis, the step-by-step feeding design of the needle feeding assembly 2 realizes the single separation and vertical directional conveying of the needle body through the reciprocating lifting action driven by the needle feeding cylinder 203 and the precise alignment of the needle storage groove 204 and the needle feeding groove 205, can guarantee the feeding stability, the needle feeding assembly 3 adopts the linear driving guide rail 301 in cooperation with the rigid needle pushing plate 302, forms a stable linear pushing track. Under the cooperation of the guiding assembly 4, the needle pushing plate 302 can uniformly push the needle body along the accurately corrected axis direction, significantly reduces the collision and friction between the needle body and the pipe opening, and protects the integrity of the needle tip.

[0035] The fixed plate 401 is provided with a positioning plate 406 near one end of the product conveying platform 1, and the edge of the positioning plate 406 is provided with a pipe body positioning opening corresponding to the needle penetrating arc groove 404, which can constrain the opening of the spring pipe near the needle body end, ensure the coaxial alignment of the spring pipe opening and the needle penetrating arc groove 404, and reduce the risk of collision between the needle tip and the pipe opening edge.

[0036] The fixed plate 401 is provided with a raised positioning block 407 near one end of the movable plate 402, and the movable plate 402 is provided with a positioning groove 408 matched with the positioning block 407 near one end of the fixed plate 401. The sidewalls of the positioning block 407 and the positioning groove 408 are provided with corresponding guide inclined surfaces. The guide inclined surfaces of the positioning block 407 and the positioning groove 408 generate a self-centering effect during the pressing process of the movable plate 402, which can automatically eliminate the assembly gap error between the movable plate 402 and the fixed plate 401. The guide inclined surface generates a horizontal correction force when guiding the positioning block 407 to slide into the positioning groove 408, which ensures the splicing accuracy of the needle penetrating arc groove 404 when the two plates are closed, avoids the misplacement of the needle penetrating hole caused by mechanical wear, and prolongs the service life of the guide assembly 4.

[0037] The storage plate 201 is provided with a plurality of needle storage grooves 204, and the needle storage grooves 204 are equidistantly arranged. The number and position of the needle feeding plate 202 and the needle penetrating hole are matched with the needle storage groove 204, which can simultaneously complete the storage, separation and pushing actions of multiple needle bodies. Multi-row operation significantly improves the needle penetrating efficiency, and each needle storage groove 204 independently supplies material, avoiding mutual interference between multiple needle bodies, ensuring the consistency and stability of synchronous needle penetrating action, and adapting to the demand of high-speed production line. The needle feeding plate 202 is provided with a synchronous pushing block 206 away from the needle feeding groove 205, and two or more needle feeding plates 202 are connected with the needle feeding cylinder 203 through the synchronous pushing block 206. The synchronous pushing block 206 rigidly connects multiple needle feeding plates 202 with a single needle feeding cylinder 203, realizing the synchronous lifting movement of multiple needle feeding grooves 205. The action phase difference of each needle feeding plate 202 caused by independent driving is eliminated, ensuring that all needle bodies reach the predetermined feeding height at the same time, and avoiding the problems of needle body jamming or feeding failure caused by asynchronous needle feeding timing.

[0038] The needle feeding assembly 2 is provided with a needle pressing assembly above. The needle pressing assembly includes a needle pressing cylinder 207 and a needle pressing roller 208. The needle pressing roller 208 is connected with the telescopic rod of the needle pressing cylinder 207 through a support rod. The needle pressing roller 208 applies a controllable flexible pressure to the needle body in the needle storage groove 204 under the driving of the needle pressing cylinder 207, which prevents the needle body from separating from the needle storage groove 204 during the lifting process of the needle feeding plate 202, and avoids the deformation of the needle body caused by rigid pressing.

[0039] Working process: the needle body in the needle storage groove 204 falls into the needle feeding groove 205, the needle feeding cylinder 203 pushes the needle feeding plate 202 to rise, the needle body is flush with the height of the needle penetrating arc groove 404, the lower pressing cylinder 403 drives the fixed plate 401 and the movable plate 402 to adhere, the needle pushing plate 302 pushes the needle body in the needle feeding groove 205 to the spring tube in the product conveying platform 1, in the process of pushing the needle body, the needle body is first inserted into the needle penetrating hole under the action of the guide opening, and then enters the spring tube through the needle penetrating hole, after the movable plate 402 is reset by the lower pressing cylinder 403, the product conveying platform 1 can convey the spring tube after the needle is penetrated to the next process.

[0040] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure reference in the claims should not be regarded as limiting the involved claims.

Claims

1. An automatic needle feeding and threading mechanism comprising a product transport platform for transporting a spring tube, characterized in that: One side of the product conveying platform is provided with a needle feeding assembly for storing and feeding the needle bodies, and the needle feeding assembly is provided with a needle penetrating assembly at an end away from the conveying platform, the needle penetrating assembly is used for pushing the needle bodies in the needle feeding assembly into the spring tube of the product conveying platform, and a guide assembly is arranged between the needle feeding assembly and the conveying platform; The needle feeding assembly comprises a storage plate, a needle feeding plate and a needle feeding cylinder, the surface of the storage plate is provided with a needle storage groove, the bottom surface of the needle storage groove is provided with a needle plate opening, the needle feeding cylinder is located below the storage plate, the needle feeding plate is connected with the needle feeding cylinder and passes through the needle plate opening, the needle feeding cylinder can push the needle feeding plate to ascend and descend in the needle storage groove along the needle plate opening, and one end of the needle feeding plate close to the needle storage groove is provided with a needle feeding groove with a diameter consistent with the needle body; The needle penetrating assembly comprises a linear drive guide rail and a needle pushing plate, the needle pushing plate is connected with the linear drive guide rail, the linear drive guide rail is used for driving the needle pushing plate to move towards the needle feeding assembly, and the needle pushing plate can push the needle bodies in the needle feeding groove into the spring tube of the product conveying platform; The guide assembly comprises a fixed plate, a movable plate and a pressing cylinder, the movable plate is installed above the fixed plate through the pressing cylinder, the movable plate is aligned with the fixed plate, one end of the movable plate and the fixed plate close to each other is provided with a needle penetrating arc groove, one end of the needle penetrating arc groove close to the needle feeding plate is provided with a guide arc surface, the pressing cylinder can drive the movable plate to be attached to the fixed plate, the needle penetrating arc grooves of the movable plate and the fixed plate can be combined to form a complete needle penetrating hole, and the guide arc surfaces of the movable plate and the fixed plate can be combined to form a complete guide opening.

2. The automatic needle-feeding and-threading mechanism according to claim 1, characterized in that: One end of the fixed plate close to the product conveying platform is provided with a positioning plate, and the edge of the positioning plate is provided with a tube body positioning opening corresponding to the needle penetrating arc groove.

3. The automatic needle feeding and threading mechanism of claim 1, wherein: One end of the fixed plate close to the movable plate is provided with a raised positioning block, one end of the movable plate close to the fixed plate is provided with a positioning groove matched with the positioning block, and the side walls of the positioning block and the positioning groove are provided with corresponding guide inclined surfaces.

4. The automatic needle loading and loading mechanism of any one of claims 1-3, wherein: The storage plate is provided with two or more needle storage grooves, the needle storage grooves are equidistantly arranged, and the number and position of the needle feeding plates and the needle penetrating holes are matched with the needle storage grooves.

5. The automatic needle-feeding and-threading mechanism according to claim 4, characterized in that: One end of the needle feeding plate away from the needle feeding groove is provided with a synchronous pushing block, and two or more needle feeding plates are connected with the needle feeding cylinder through the synchronous pushing block.

6. The automatic needle loading and loading mechanism of any of claims 1-3, wherein: The upper side of the needle feeding assembly is provided with a needle pressing assembly, the needle pressing assembly comprises a needle pressing cylinder and a needle pressing roller, and the needle pressing roller is connected with the telescopic rod of the needle pressing cylinder through a supporting rod.

7. The automatic needle loading and loading mechanism of any of claims 1-3, wherein: The product conveying platform comprises a sliding rail, a sliding block, a lifting cylinder, a feeding plate and a driving assembly, the edge of the product conveying platform is provided with a plurality of equidistantly arranged material teeth, the feeding plate is connected with the telescopic rod of the lifting cylinder, the lifting cylinder is installed on the surface of the sliding block through a supporting seat, the sliding block can move along the surface of the sliding rail, and the driving assembly drives the supporting seat to translate through a connecting block.

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