A cutting and feeding device for processing medical metal needles

Abstract

This application relates to the field of machine tool shearing equipment technology, and discloses a cutting and feeding device for processing medical metal needles. It includes a support platform with two chains mounted above it. Several equidistantly arranged linkage plates are fixedly connected between the two chains via an elastic connecting device. A passive pressure plate is mounted on one side of each linkage plate. The passive pressure plate, along with the chain rotation, moves a stainless steel tube toward a cutting blade for cutting feed. The cutting blade cuts the stainless steel tube. The application also includes a pressing device located inside the linkage plate. The passive pressure plate moves the stainless steel tube toward one end of the cutting blade to achieve cutting feed. During cutting, the magnetic repulsion generated by energizing an electromagnet in the pressing device clamps the stainless steel tube being cut by the passive pressure plate. This ensures that when the cutting blade performs batch cutting of stainless steel tubes, all passive pressure plates completely cover the stainless steel tube, keeping the stainless steel tube stable.

Description

Technical Field

[0001] This application relates to the field of machine tool shearing equipment technology, and in particular to a cutting and feeding device for processing medical metal needles. Background Technology

[0002] Medical metal needles are an indispensable and critical type of interventional medical device. Traditional medical metal needles are usually made from austenitic stainless steel tubing with excellent biocompatibility and corrosion resistance through precision processing. During the production of metal needles, the stainless steel tubing is first cut to a fixed length using cutting equipment to form a blank of a single needle tube.

[0003] Because existing equipment typically performs batch cutting of stainless steel pipes, it requires complex servo feeding mechanisms, precision linear modules, and multiple pneumatic or servo clamps to feed and clamp the stainless steel pipes during the cutting process. This results in high manufacturing and maintenance costs. Furthermore, due to the separate design of the existing feeding and clamping mechanisms, the clamping area of ​​the clamps on the stainless steel pipes is small when clamping for cutting thickness. During cutting, the sudden impact force generated at the moment the cutting blade contacts and cuts into the needle tube can cause vibration, affecting the cutting accuracy. Summary of the Invention

[0004] This application proposes a cutting and feeding device for processing medical metal needles, which has the advantages of low manufacturing and maintenance costs, as well as high cutting accuracy. It solves the problem that existing cutting and feeding devices for processing medical metal needles require complex servo feeding mechanisms, precision linear modules, and multiple pneumatic or servo clamps to feed and clamp stainless steel tubes, resulting in high costs. Furthermore, due to the separate design of the feeding and clamping mechanisms, the clamping area of ​​the clamps on the stainless steel tubes is small when cutting and feeding the thickness, resulting in insufficient fixed frictional resistance and easy impact on cutting accuracy due to vibration.

[0005] To achieve the above objectives, this application adopts the following technical solution: a cutting and feeding device for processing medical metal needles, including a support platform, a cutting blade at one end of the top of the support platform, and two chains driven by a servo motor. The two chains form a rectangle, and several equidistant linkage plates are fixedly connected between the two chains by an elastic connecting device. A passive pressure plate is provided on one side of the linkage plate. The passive pressure plate moves the stainless steel tube on the support platform toward the cutting blade for cutting and feeding as the chains rotate. The cutting blade cuts the stainless steel tube.

[0006] It also includes a pressing device set inside the linkage plate. The pressing device includes a positioning horizontal plate and a movable horizontal plate set vertically. An electromagnet and a magnetic block are respectively set on the side of the positioning horizontal plate and the movable horizontal plate facing each other. The electromagnet is energized when the cutting blade cuts, and the electromagnet and the magnetic block repel each other when energized. An active pressing plate is fixedly installed at the bottom of the movable horizontal plate. The bottom of the active pressing plate is movably connected to the side of the linkage plate away from the passive pressing plate. A second spring is set between the positioning horizontal plates.

[0007] Furthermore, the top of the support platform is a smooth flat design, which makes the frictional resistance between the top of the support platform and the stainless steel pipe less than the frictional resistance between the passive pressure plate and the stainless steel pipe. When the passive pressure plate moves with the chain, it can drive the stainless steel pipe to move on the surface of the support platform toward one end of the cutting blade, thereby realizing cutting feed.

[0008] Furthermore, support plates are fixedly installed on both sides of the top of the support platform. Two sets of rotatable positioning shafts are movably arranged between the two support plates. The two sets of positioning shafts are close to the two ends of the support plates. There are two positioning shafts in each set, and the two positioning shafts in the same set are arranged vertically. Two sprockets are fixedly installed on each positioning shaft, and the two sprockets are close to the two ends of the positioning shaft. Chains are connected between the four sprockets located at the same end of the positioning shaft. The servo motor is fixedly installed on one of the support plates and drives one of the positioning shafts to rotate. Through the rectangular four-corner position structure design of the two sets of positioning shafts, the two chains of transmission form a rectangle, so that the pressing device can be set inside the linkage plate. The downward movement of the movable horizontal plate and the active pressing plate in the pressing device does not affect the movement of the linkage plate and the passive pressing plate driven by the operation of the two chains.

[0009] Furthermore, the elastic connection device includes two positioning connection plates, one of which is fixedly installed on one side of the chain. A positioning block is fixedly arranged between the two positioning connection plates near one end of the chain. A sliding block is also movably arranged between the two positioning connection plates. The sliding block is located at the end of the positioning connection plate away from the chain, and a sliding shaft is movably fitted in the middle of the sliding block. The two ends of the sliding shaft extend outward from the outer sides of the two positioning connection plates, respectively. One end of the linkage plate is fixedly connected to one end of the sliding shaft. The two positioning connection plates are respectively provided with a sliding groove adapted to the sliding shaft. A first spring is arranged between the positioning block and the sliding block. The elastic force of the first spring causes the sliding block, sliding shaft, linkage plate, and passive pressure plate to move together towards the end away from the positioning block. When the passive pressure plate, linkage plate, and elastic connection device rotate with the chain to the initial position of the sprocket, the passive pressure plate will tilt when rotating along the outer side of the sprocket to reverse direction. By utilizing the design that the passive pressure plate, linkage plate, sliding shaft, and sliding block can move relative to the positioning block and positioning connection plate, the passive pressure plate is prevented from bending the stainless steel pipe at the top of the support platform when the sprocket rotates to reverse direction.

[0010] Furthermore, limit rings are fixedly installed at both ends of the sliding shaft. One side of each limit ring is movably connected to the outer side of the two positioning connecting plates. The diameter of the limit ring is greater than the width of the slide groove. Through the limiting effect of the two limit rings on the outer side of the slide groove, the sliding shaft and the sliding block can move stably along the slide groove relative to the positioning connecting plates.

[0011] Furthermore, a slot is provided on one side of the linkage plate, and a passive pressure plate is fixedly installed in the slot. The two ends of the passive pressure plate are reserved with the two ends of the slot. Two limiting plates are fixedly installed on the top of the support platform. The two limiting plates are movably connected to the two ends of the passive pressure plate. When the passive pressure plate moves with the chain, the two limiting plates limit the two sides of the batch of stainless steel pipes on the top of the support platform. With the downward pressure of the passive pressure plate on the stainless steel pipes, the batch of stainless steel pipes can be cut into equal lengths during cutting.

[0012] Furthermore, both ends of the positioning horizontal plate are fixed to two support plates by L-shaped fasteners, and the bottom of the positioning horizontal plate and the top of the movable horizontal plate are respectively fixedly installed with the same number of positioning sleeves in corresponding positions. The electromagnet is fixedly installed on the positioning sleeve located at the bottom of the positioning horizontal plate, and the magnetic block is fixedly installed on the positioning sleeve located at the top of the movable horizontal plate. By setting multiple electromagnets and magnetic blocks on the positioning horizontal plate and the movable horizontal plate respectively, the magnetic repulsion force generated by the electromagnet after being energized can ensure that the passive pressure plate presses the stainless steel pipe being cut by the cutting blade, preventing the cutting accuracy from being affected by vibration during the cutting of the stainless steel pipe.

[0013] Furthermore, two vertical shafts are fixedly installed on the positioning horizontal plate, with the two vertical shafts respectively close to both ends of the positioning horizontal plate. The vertical shaft consists of a thick shaft and a thin shaft, with the thick shaft above the thin shaft and the bottom of the thick shaft below the bottom of the electromagnet. The movable horizontal plate is movably connected to the thin shaft of the vertical shaft, and the second spring is movably fitted on the outside of the vertical shaft. When cutting and feeding the stainless steel pipe, the elastic force of the second spring causes the movable horizontal plate and the active pressure plate to move downward, thereby generating downward pressure on the linkage plate and the passive pressure plate. This causes the passive pressure plate to move the stainless steel pipe as it rotates with the chain, thus achieving the cutting and feeding.

[0014] Furthermore, a stop block located below the movable horizontal plate is fixedly connected to the bottom end of the vertical shaft. The stop block is movably connected to the bottom of the movable horizontal plate. The structure of the stop block prevents the movable horizontal plate from falling.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This application provides a cutting and feeding device for processing medical metal needles. It comprises several equidistantly arranged linkage plates and passive pressure plates between two chains, with a pressing device inside the linkage plates. The pressing device utilizes a longitudinally movable horizontal plate and an active pressure plate to press down on the linkage plates, causing the passive pressure plates to press down on the stainless steel tube at the top of the support platform. Thus, when the drive chain is running, the passive pressure plates move the stainless steel tube towards one end of the cutting blade to achieve cutting feed. During cutting, the magnetic repulsion generated by energizing an electromagnet clamps the stainless steel tube being cut by the passive pressure plates. This ensures that when the cutting blade performs batch cutting of the stainless steel tube, all passive pressure plates completely cover the stainless steel tube, keeping it stable. This prevents sudden impact forces from occurring at the moment the cutting blade contacts and cuts into the needle tube, which could cause vibration and affect cutting accuracy. It also prevents the feeding servo motor from generating a momentary tracking error, affecting subsequent cutting accuracy.

[0017] 2. A servo motor drives a chain to move a passive pressure plate, which in turn moves the stainless steel pipe to achieve cutting feed. While the cutting blade cuts the stainless steel pipe, an electromagnet is simultaneously energized to generate magnetic repulsion on a magnetic block, increasing the downward pressure of the passive pressure plate on the stainless steel pipe. This prevents the stainless steel pipe from shifting during cutting. Compared to existing cutting devices that require complex servo feeding mechanisms, precision linear modules, and multiple pneumatic or servo clamps, the simplified chain and equidistantly arranged passive pressure plate design significantly reduces manufacturing and maintenance costs. Furthermore, during batch cutting feed, all stainless steel pipes are simultaneously pushed by the equidistantly arranged passive pressure plates, ensuring the inherent consistency of the feed length for all stainless steel pipes and further improving cutting accuracy. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0019] Figure 1 This is a schematic diagram of the middle section structure of the present invention;

[0020] Figure 2 for Figure 1 The front view;

[0021] Figure 3 for Figure 1 Schematic diagram of the connection structure between the central linkage plate and the chain;

[0022] Figure 4 for Figure 3 The right view;

[0023] Figure 5 for Figure 3 Schematic diagram of the flexible connection device;

[0024] Figure 6 for Figure 5 The right view;

[0025] Figure 7 for Figure 1 Schematic diagram of the medium-pressure material handling device;

[0026] Figure 8 for Figure 7 The right view.

[0027] In the diagram: 1. Support platform; 2. Support plate; 3. Cutting blade; 4. Positioning shaft; 5. Sprocket; 6. Chain; 7. Servo motor; 8. Elastic connecting device; 801. Positioning connecting plate; 8011. Slide groove; 802. Positioning block; 803. Sliding block; 804. Sliding shaft; 805. Limiting ring; 806. First spring; 9. Linkage plate; 10. Passive pressure plate; 11. Limiting plate; 12. Pressing device; 121. Positioning horizontal plate; 122. Vertical shaft; 123. Movable horizontal plate; 124. Second spring; 125. Active pressure plate; 126. Stop block; 127. Positioning sleeve; 128. Electromagnet; 129. Magnetic block. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-2 A cutting and feeding device for processing medical metal needles includes a support platform 1, with support plates 2 fixedly installed on both sides of the top of the support platform 1. Figure 1 This is a schematic diagram of the middle section of the cutting feed device, and the sectioned part is... Figure 1The structure is symmetrically arranged, so only one support plate 2 is shown in the figure. A cutting blade 3 is set at one end of the top of the support platform 1. The top of the support platform 1 is a smooth flat design, so that the surface of the support platform 1 has low friction with the stainless steel tube before the metal needle cuts it, so that the stainless steel tube can be fed to one end of the cutting blade 3 at the top of the support platform 1 and cut by the cutting blade 3. Two sets of rotatable positioning shafts 4 are movably arranged between the two support plates 2. The two sets of positioning shafts 4 are close to the two ends of the support plate 2 respectively. There are two positioning shafts 4 in one set, and the two positioning shafts 4 in the same set are arranged vertically. Two sprockets 5 are fixedly installed on one positioning shaft 4, and the two sprockets 5 are close to the two ends of the positioning shaft 4 respectively. The four sprockets 5 located at the same end of the positioning shaft 4 are connected by a chain 6. A servo motor 7 is fixedly installed on the outside of the support plate 2 to drive one of the positioning shafts 4 to rotate. The servo motor 7 drives the positioning shaft 4 to drive the sprocket 5 to rotate, which can make the chain 6 run.

[0030] like Figure 1 , Figures 2-5 Several equidistantly arranged elastic connecting devices 8 are fixedly installed on the inner sides of the two chains 6. Each elastic connecting device 8 includes two positioning connecting plates 801. One positioning connecting plate 801 is fixedly installed on one side of the chain 6. A positioning block 802 is fixedly disposed between the two positioning connecting plates 801 near one end of the chain 6. A sliding block 803 is also movably disposed between the two positioning connecting plates 801. The sliding block 803 is located at the end of the positioning connecting plate 801 away from the chain 6. A sliding shaft 804 is movably fitted in the middle of the sliding block 803, and both ends of the sliding shaft 804 extend outward from the outer sides of the two positioning connecting plates 801. The two positioning connecting plates 801 are respectively provided with grooves 8011 that are adapted to the sliding shaft 804. The sliding shaft 804 can drive the sliding block 803 to slide along the slide groove 8011. Limiting rings 805 are fixedly installed at both ends of the sliding shaft 804. One side of the two limiting rings 805 is movably connected to the outer side of the two positioning connecting plates 801, and the diameter of the limiting rings 805 is greater than the groove width of the slide groove 8011. Through the limiting effect of the two limiting rings 805 on the outer side of the slide groove 8011, the sliding shaft 804 and the sliding block 803 can move stably along the slide groove 8011 relative to the positioning connecting plate 801. A first spring 806 is provided between the sliding block 803 and the positioning block 802. The elastic force of the first spring 806 causes the sliding block 803 and the sliding shaft 804 to move away from the end of the positioning block 802.

[0031] A linkage plate 9 is fixedly connected between the sliding shafts 804 at corresponding positions (referring to the two elastic connecting devices 8 on opposite sides of the two chains 6). A slot is opened on one side of the linkage plate 9, and a passive pressure plate 10 is fixedly installed in the slot of the linkage plate 9. A gap is reserved between the two ends of the passive pressure plate 10 and the two ends of the slot. Two limiting plates 11 are fixedly installed on the top of the support platform 1. The two limiting plates 11 are movably connected to the two ends of the passive pressure plate 10 respectively. The passive pressure plate 10 moves with the operation of the chain 6, and the friction force drives the stainless steel pipe to move towards one end of the cutting blade 3. The cutting blade 3 cuts the stainless steel pipe.

[0032] Please see Figures 1-2 , Figures 7-8 A pressing device 12 is located inside several linkage plates 9 between two support plates 2. The pressing device 12 includes a positioning horizontal plate 121. Both ends of the positioning horizontal plate 121 are fixed to the two support plates 2 by L-shaped fasteners. Two vertical shafts 122 are fixedly installed on the positioning horizontal plate 121. The two vertical shafts 122 are close to the two ends of the positioning horizontal plate 121. The vertical shaft 122 consists of a thick shaft and a thin shaft, with the thick shaft above the thin shaft. A movable horizontal plate 123 is movably fitted on the thin shaft of the vertical shaft 122. A second spring 124 is movably fitted on the outside of the vertical shaft 122 between the movable horizontal plate 123 and the positioning horizontal plate 121. Several active pressure plates 12 are fixedly installed at the bottom end of the movable horizontal plate 123. 5. The bottom of the active pressure plate 125 is movably connected to the side of the linkage plate 9 away from the passive pressure plate 10. The two ends of the active pressure plate 125 are close to the two positioning shafts 4 located below the support plate 2, and the two ends of the active pressure plate 125 are designed with smooth chamfers. Through the elastic force of the second spring 124, the movable horizontal plate 123 drives the active pressure plate 125 to move downward, thereby pressing the active pressure plate 125 down onto the surface of the linkage plate 9. When the linkage plate 9 and the passive pressure plate 10 move toward one end of the cutting blade 3 as the chain 6 rotates, the frictional resistance between the passive pressure plate 10 and the stainless steel pipe on the support platform 1 can be used to drive the stainless steel pipe toward one end of the cutting blade 3 to achieve cutting feed.

[0033] A stop 126 is fixedly installed at the bottom of the vertical shaft 122. The stop 126 is movably connected to the bottom of the movable horizontal plate 123. The structure of the stop 126 prevents the movable horizontal plate 123 from falling.

[0034] The bottom of the positioning horizontal plate 121 and the top of the movable horizontal plate 123 are respectively fixedly installed with the same number of positioning sleeves 127 in corresponding positions. An electromagnet 128 is fixedly installed on the positioning sleeve 127 at the bottom of the positioning horizontal plate 121, and a magnetic block 129 is fixedly installed on the positioning sleeve 127 at the top of the movable horizontal plate 123. When the electromagnet 128 is energized, it repels the magnetic block 129. The electromagnet 128 and the driving cutting blade 3 are driven by existing technology, and this application does not improve the driving device, so it will not be described in detail. Synchronous energization is not shown in the figure. When the stainless steel pipe is being cut, the electromagnet 128 is simultaneously energized to generate a magnetic repulsion force on the magnetic block 129. This magnetic repulsion force further increases the downward pressure of the active pressure plate 125 on the linkage plate 9, which in turn further increases the downward pressure of the passive pressure plate 10 on the stainless steel pipe. This ensures that the stainless steel pipe remains stable when the cutting blade 3 performs batch cutting, preventing a sudden impact force from being generated at the moment the cutting blade 3 contacts and cuts into the needle tube, which would cause vibration and affect the cutting accuracy. At the same time, it would also cause a momentary tracking error in the feeding servo motor, which would affect the subsequent cutting accuracy.

[0035] In use, the stainless steel tubes to be cut by the metal needles are first placed in batches on the support platform 1 at the end away from the cutting blade 3, and pushed under the passive pressure plate 10. At the same time, the servo motor 7 is started to drive the positioning shaft 4 to rotate the sprocket 5, so that the chain 6 runs and moves the pressed stainless steel tubes toward the end of the cutting blade 3. Then, the cutting blade 3 is controlled to cut the stainless steel tubes. At the same time, the electromagnet 128 is energized to generate a magnetic repulsion force on the magnetic block 129, which further increases the downward pressure of the passive pressure plate 10 on the stainless steel tubes to ensure that the stainless steel tubes are stably cut by the cutting blade 3. After one cut is completed, the electromagnet 128 is de-energized, so that the downward pressure of the passive pressure plate 10 on the stainless steel tubes is reduced. Using the elastic force of the second spring 124, the passive pressure plate 10 moves with the chain 6 to move the stainless steel tubes toward the end of the cutting blade 3 for cutting.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cutting and feeding device for processing medical metal needles, comprising a support platform, wherein a cutting blade is disposed at one end of the top of the support platform, characterized in that, It also includes, Two chains driven by servo motors form a rectangle, and several equidistant linkage plates are fixedly connected between the two chains by an elastic connecting device. A passive pressure plate is set on one side of the linkage plate. The passive pressure plate moves the stainless steel pipe on the support platform toward the cutting blade as the chain rotates, and the cutting blade cuts the stainless steel pipe. A pressing device is installed inside the linkage plate. The pressing device includes a positioning horizontal plate and a movable horizontal plate arranged vertically. An electromagnet and a magnetic block are respectively installed on the side of the positioning horizontal plate and the movable horizontal plate facing each other. The electromagnet is energized when the cutting blade cuts, and the electromagnet and the magnetic block repel each other when energized. An active pressing plate is fixedly installed at the bottom of the movable horizontal plate. The bottom of the active pressing plate is movably connected to the side of the linkage plate away from the passive pressing plate. A second spring is provided between the positioning horizontal plate and the movable horizontal plate. Support plates are fixedly installed on both sides of the top of the support platform. Two sets of rotatable positioning shafts are movably arranged between the two support plates. The two sets of positioning shafts are close to the two ends of the support plates. There are two positioning shafts in each set, and the two positioning shafts in the same set are arranged vertically. Two sprockets are fixedly installed on each positioning shaft, and the two sprockets are close to the two ends of the positioning shaft. Chains are connected between the four sprockets located at the same end of the positioning shaft. The servo motor is fixedly installed on one of the support plates and drives one of the positioning shafts to rotate. Through the rectangular four-corner position structure design of the two sets of positioning shafts, the two chains of transmission form a rectangle, so that the pressing device can be set inside the linkage plate. The downward movement of the movable horizontal plate and the active pressing plate in the pressing device does not affect the movement of the linkage plate and the passive pressing plate driven by the operation of the two chains. The elastic connection device includes two positioning connection plates, one of which is fixedly installed on one side of the chain. A positioning block is fixedly arranged between the two positioning connection plates near one end of the chain. A sliding block is also movably arranged between the two positioning connection plates. The sliding block is located at the end of the positioning connection plate away from the chain, and a sliding shaft is movably fitted in the middle of the sliding block. The two ends of the sliding shaft extend outward from the outer sides of the two positioning connection plates, respectively. One end of the linkage plate is fixedly connected to one end of the sliding shaft. The two positioning connection plates are respectively provided with a sliding groove adapted to the sliding shaft. A first spring is arranged between the positioning block and the sliding block. The elastic force of the first spring causes the sliding block, sliding shaft, linkage plate and passive pressure plate to move together towards the end away from the positioning block. When the passive pressure plate, linkage plate and elastic connection device rotate with the chain to the initial position of the sprocket, the passive pressure plate will tilt when rotating along the outer side of the sprocket to reverse direction. The design that the passive pressure plate, linkage plate, sliding shaft and sliding block can move relative to the positioning block and positioning connection plate avoids the passive pressure plate bending the stainless steel pipe at the top of the support platform when the sprocket rotates to reverse direction.

2. The cutting and feeding device for processing medical metal needles according to claim 1, characterized in that, The top of the support platform is a smooth plane design, which makes the frictional resistance between the top of the support platform and the stainless steel pipe less than the frictional resistance between the passive pressure plate and the stainless steel pipe. When the passive pressure plate moves with the chain, it can drive the stainless steel pipe to move on the surface of the support platform toward one end of the cutting blade, thereby realizing the cutting feed.

3. The cutting and feeding device for processing medical metal needles according to claim 1, characterized in that, Limiting rings are fixedly installed at both ends of the sliding shaft. One side of each limiting ring is movably connected to the outer side of each of the two positioning connecting plates. The diameter of the limiting ring is greater than the width of the slide groove. Through the limiting effect of the two limiting rings on the outer side of the slide groove, the sliding shaft and the sliding block can move stably along the slide groove relative to the positioning connecting plates.

4. The cutting and feeding device for processing medical metal needles according to claim 1, characterized in that, A slot is provided on one side of the linkage plate, and a passive pressure plate is fixedly installed in the slot. The two ends of the passive pressure plate are reserved with the two ends of the slot. Two limiting plates are fixedly installed on the top of the support platform. The two limiting plates are movably connected to the two ends of the passive pressure plate. When the passive pressure plate moves with the chain, the two limiting plates limit the two sides of the batch of stainless steel pipes on the top of the support platform. With the downward pressure of the passive pressure plate on the stainless steel pipes, the batch of stainless steel pipes can be cut into equal lengths during cutting.

5. The cutting and feeding device for processing medical metal needles according to claim 1, characterized in that, Both ends of the positioning plate are fixed to two support plates by L-shaped fasteners. The bottom of the positioning plate and the top of the movable plate are respectively fixed with the same number of positioning sleeves in corresponding positions. The electromagnet is fixedly installed on the positioning sleeve at the bottom of the positioning plate, and the magnetic block is fixedly installed on the positioning sleeve at the top of the movable plate. By setting multiple electromagnets and magnetic blocks on the positioning plate and the movable plate respectively, the magnetic repulsion force generated by the electromagnet after being energized can ensure that the passive pressure plate presses the stainless steel pipe being cut by the cutting blade, preventing the cutting accuracy from being affected by vibration during the cutting of the stainless steel pipe.

6. The cutting and feeding device for processing medical metal needles according to claim 1, characterized in that, Two vertical shafts are fixedly installed on the positioning horizontal plate, with each shaft close to one end of the positioning horizontal plate. Each vertical shaft consists of a thick shaft and a thin shaft, with the thick shaft above the thin shaft and its bottom below the bottom of the electromagnet. The movable horizontal plate is movably connected to the thin shaft of the vertical shaft, and a second spring is movably fitted on the outside of the vertical shaft. When cutting and feeding the stainless steel pipe, the elastic force of the second spring causes the movable horizontal plate and the active pressure plate to move downward, thereby generating downward pressure on the linkage plate and the passive pressure plate. This causes the passive pressure plate to move the stainless steel pipe as it rotates with the chain, thus achieving the cutting and feeding.

7. The cutting and feeding device for processing medical metal needles according to claim 6, characterized in that, The bottom end of the vertical shaft is fixedly connected to a stop block located below the movable horizontal plate. The stop block is movably connected to the bottom of the movable horizontal plate. The structure of the stop block prevents the movable horizontal plate from falling.

Images