A magnetic rod intermittent feeding device and method

Abstract

The application discloses a kind of intermittent feeding devices of magnetic rod, comprising: rack, including the feeding station of magnetic rod and the unloading station;Chain assembly, including chain body and two sprockets, chain body is set on two sprockets and can be rotated between feeding station and unloading station, chain body includes multiple interconnecting links;Multiple groups of jaw assemblies, jaw assembly includes first positioning jaw and second positioning jaw, when link moves to sprocket, first positioning jaw and second positioning jaw in the same group of jaw assemblies are in the opening state of mutual separation, when link moves between two sprockets, first positioning jaw and second positioning jaw in the same group of jaw assemblies are in the clamping state of mutual engagement.The application also discloses a kind of intermittent feeding method of magnetic rod.The application can realize the automatic feeding and unloading of magnetic rod, can save labor cost, improve production efficiency.

Description

Technical Field

[0001] This invention relates to the field of magnetic rod processing equipment, and in particular to a magnetic rod intermittent feeding device and method. Background Technology

[0002] The magnetic rod is one of the main internal components of the printer, and it attracts toner from the toner cartridge to its surface. During the manufacturing process, both ends of the magnetic rod need to be polished.

[0003] Existing equipment for grinding the ends of magnetic rods has low processing efficiency. For example, Chinese utility model patent CN215748533U discloses a device for grinding and polishing magnetic rods. This device has a fixed clamp for holding the magnetic rods, and a moving device can move the fixed clamp to achieve grinding and polishing. In the aforementioned patent, the device requires manual handling to clamp each magnetic rod onto the fixed clamp to achieve positioning, resulting in low processing efficiency and high labor costs. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a magnetic rod intermittent feeding device, which can realize automatic loading and unloading of magnetic rods, reduce labor costs, and improve processing efficiency.

[0005] The present invention also proposes a method for intermittent feeding of magnetic rods using the above-mentioned intermittent feeding device for magnetic rods.

[0006] According to a first aspect of the present invention, an intermittent magnetic rod feeding device includes: a frame including a loading station and a unloading station, wherein the loading station holds a magnetic rod to be polished, and the unloading station can receive the polished magnetic rod; a chain assembly including a chain body and two sprockets, the two sprockets being rotatably disposed on the loading station and the unloading station of the frame respectively, the chain body being sleeved on the two sprockets and rotatable between the loading station and the unloading station, the chain body including a plurality of interconnected chain links; and a plurality of gripper assemblies arranged along the extension direction of the chain body on the chain body, the gripper assembly including a first positioning... The clamping jaws and the second positioning jaws are respectively disposed on two adjacent chain links in each clamping jaw assembly. The clamping jaw assembly is configured to clamp the magnetic rod at the loading station and release the magnetic rod at the unloading station by means of the first positioning jaws and the second positioning jaws. When the chain link moves to the sprocket, the first positioning jaws and the second positioning jaws in the same clamping jaw assembly are in an open state that moves away from each other. When the chain link moves between the two sprockets, the first positioning jaws and the second positioning jaws in the same clamping jaw assembly are in a clamping state that engages with each other.

[0007] It has at least the following beneficial effects: During the rotation of the chain body between the loading and unloading stations, the chain links on the chain body will turn at the sprocket. After turning, the chain links will move along a straight line to another sprocket, and this cycle repeats. Specifically, when a chain link is in the turning position at the sprocket, adjacent chain links are set at a certain angle, causing the first and second positioning jaws on adjacent links to be in an open state, moving away from each other. As adjacent chain links move away from the turning position, the first and second positioning jaws gradually approach and switch to a clamping state, allowing the magnetic rod to be ground at the loading station to be held during the transition from the open to the clamping state. Similarly, when adjacent chain links enter the turning position at the sprocket, the first and second positioning jaws gradually move away and switch to the open state, allowing the ground magnetic rod to be released onto the unloading station during the transition from the clamping state to the open state. The magnetic rod conveying device of this invention can realize automatic loading and unloading of magnetic rods, which can save labor costs and improve production efficiency.

[0008] According to some embodiments of the present invention, the gripper assembly can grip the magnetic rod radially. The first positioning gripper and the second positioning gripper are respectively provided with a first arc surface and a second arc surface. The first arc surface and the second arc surface are arranged facing each other. When the first positioning gripper and the second positioning gripper are in the gripping state, the first arc surface and the second arc surface interlock and enclose a gripping space.

[0009] According to some embodiments of the present invention, the two sprockets are a driving sprocket and a driven sprocket, respectively. The driving sprocket can drive the driven sprocket to rotate through the chain body. The driving sprocket is located at the unloading station, and the driven sprocket is located at the loading station.

[0010] According to some embodiments of the present invention, a feeding assembly is further provided on the frame, the feeding assembly being located at the feeding station, the feeding assembly including a feeding frame and a feeding plate, the feeding frame being used to horizontally hold a plurality of magnetic rods to be ground, the feeding frame having a discharge port, the feeding plate being abutting the bottom of the discharge port, the feeding plate having a downwardly recessed first positioning portion, the plurality of magnetic rods in the feeding frame being movable one by one from the discharge port into the first positioning portion, when the gripper assembly moves to a position corresponding to the first positioning portion, the first positioning gripper is located in front of the first positioning portion, the second positioning gripper is located diagonally below the first positioning portion, as the gripper assembly continues to move forward, the second positioning gripper gradually flips and pushes the magnetic rod towards the first positioning gripper located in front, until the magnetic rod is clamped between the first positioning gripper and the second positioning gripper.

[0011] According to some embodiments of the present invention, the width of the feeding plate is less than the length of the magnetic rod.

[0012] According to some embodiments of the present invention, the first positioning part includes a first curved segment and a second curved segment, the first curved segment and the second curved segment are smoothly transitioned, the first curved segment is located in front of the second curved segment, the first curved segment gradually slopes upward from back to front and the curvature of the first curved segment is greater than the curvature of the second curved segment.

[0013] According to some embodiments of the present invention, the feeding assembly further includes a partition plate and two parallel guide plates. The guide plates gradually slope downward from back to front. The front ends of the two guide plates form the discharge port. The distance between the two guide plates is greater than one time the diameter of the magnetic rod but less than twice the diameter of the magnetic rod. The partition plate is slidably mounted on the frame in a vertical direction. A sliding cylinder is provided on the frame. The sliding cylinder can drive the partition plate to slide so that the bottom of the partition plate intermittently blocks or opens the discharge port.

[0014] According to some embodiments of the present invention, a feeding assembly disposed on the frame is further included. The feeding assembly is located at the feeding station. The feeding assembly includes a feeding plate and a transfer mechanism. The feeding plate has a downwardly recessed second positioning portion. When the gripper assembly moves to a position corresponding to the second positioning portion, the second positioning gripper is located behind the second positioning portion, and the first positioning gripper is located diagonally below the second positioning portion. As the gripper assembly continues to move forward, the second positioning gripper gradually flips and pushes the magnetic rod forward until the magnetic rod is pushed into the second positioning portion. The transfer mechanism is configured to transfer the magnetic rod in the second positioning portion to a subsequent processing step.

[0015] According to some embodiments of the present invention, the second positioning part includes a third curved segment and a fourth curved segment, the third curved segment and the fourth curved segment having a smooth transition, the third curved segment being located in front of the fourth curved segment, the fourth curved segment gradually sloping downwards from back to front, and the curvature of the fourth curved segment being greater than the curvature of the third curved segment.

[0016] According to some embodiments of the present invention, the chain assembly is provided in two sets, the two sets of chain assemblies are arranged side by side, and the gripper assemblies on the two sets of chain assemblies can respectively grip the magnetic rod near both ends.

[0017] According to a second aspect of the present invention, a method for intermittent feeding of magnetic rods, using a magnetic rod intermittent feeding device according to the first aspect of the present invention, includes the following steps: Step S1, feeding a magnetic rod to the loading station, rotating the sprocket in the chain assembly located at the unloading station, causing the sprocket to rotate by an angle α and driving the chain body to rotate; Step S2, transferring the magnetic rod at the unloading station to the next processing step; Step S3, repeating steps S1 to S2 to achieve continuous feeding and unloading of magnetic rods.

[0018] It has at least the following beneficial effects: by using the magnetic rod conveying device in the embodiments of the present invention to convey magnetic rods, continuous automatic loading and unloading of magnetic rods can be realized, which can save labor costs and improve processing efficiency.

[0019] According to some embodiments of the present invention, the sprocket rotates at an angle α of 60° each time.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0024] Figure 3 This is a partial structural diagram of the clamping component when it reaches the unloading station in an embodiment of the present invention;

[0025] Figure 4 This is a partial structural diagram of the clamping assembly before it reaches the unloading station in an embodiment of the present invention.

[0026] Icon labels:

[0027] Frame 100, loading station 110, unloading station 120, grinding station 130;

[0028] Magnetic rod 200;

[0029] Chain assembly 300, chain body 310, chain link 311, connector 312, drive sprocket 320, driven sprocket 330;

[0030] Gripper assembly 400, first positioning gripper 410, first arc surface 411, second positioning gripper 420, second arc surface 421;

[0031] The feeding assembly 500, feeding frame 510, discharge port 511, feeding plate 520, first positioning part 521, first curved section 521a, second curved section 521b, partition plate 530, guide plate 540, and sliding cylinder 550 are included.

[0032] The feeding assembly 600, the feeding plate 610, the second positioning part 611, the third curved segment 611a, and the fourth curved segment 611b. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, the use of terms such as first, second, third, and fourth is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0036] In the description of this invention, unless otherwise explicitly defined, terms such as setting, installing, connecting, clamping, and pushing should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0037] Reference Figures 1 to 4 The present invention discloses a magnetic rod intermittent feeding device, including a frame 100, a chain assembly 300 and multiple sets of gripper assemblies 400.

[0038] The frame 100 includes a loading station 110 and a unloading station 120. The loading station 110 holds the magnetic rod 200 to be polished, and the unloading station 120 can receive the polished magnetic rod 200. The chain assembly 300 includes a chain body 310 and two sprockets. The two sprockets are rotatably mounted on the loading station 110 and the unloading station 120 of the frame 100, respectively. The chain body 310 is sleeved on the two sprockets and can rotate between the loading station 110 and the unloading station 120. The chain body 310 includes multiple interconnected chain links 311. Multiple sets of gripper assemblies 400 are arranged on the chain body 310 along the extension direction of the chain body 310. The gripper assembly 400 includes a first positioning gripper 410 and a second positioning gripper 410. Two positioning grippers 420, each set of gripper assemblies 400 has a first positioning gripper 410 and a second positioning gripper 420 respectively disposed on two adjacent chain links 311. The gripper assembly 400 is configured to hold the magnetic rod 200 at the loading station 110 by the first positioning gripper 410 and the second positioning gripper 420 and release the magnetic rod 200 at the unloading station 120. When the chain link 311 moves to the sprocket, the first positioning gripper 410 and the second positioning gripper 420 in the same set of gripper assemblies 400 are in an open state that moves away from each other. When the chain link 311 moves between the two sprockets, the first positioning gripper 410 and the second positioning gripper 420 in the same set of gripper assemblies 400 are in a clamping state that engages with each other.

[0039] Understandably, during the rotation of the chain body 310 between the loading station 110 and the unloading station 120, the chain links 311 on the chain body 310 will turn at the sprocket. After turning, the chain links 311 will move along a straight line to another sprocket, and so on. When the chain link 311 is in the turning position at the sprocket, the two adjacent chain links 311 are set at a certain angle, causing the first positioning claw 410 and the second positioning claw 420 on the two adjacent chain links 311 to be in an open state that is far apart from each other. When the two adjacent chain links 311 leave the turning position one by one, the first positioning claw 410 and the second positioning claw 420 will gradually approach and switch to a clamping state that is interlocked. During the process of the claw assembly 400 switching from the open state to the clamping state, the magnetic rod 200 to be ground located at the loading station 110 can be clamped. Similarly, as two adjacent chain links 311 successively enter the turning position at the sprocket, the first positioning gripper 410 and the second positioning gripper 420 will gradually move away and switch to the open state. During the process of the gripper assembly 400 switching from the clamping state to the open state, the polished magnetic rod 200 can be released onto the unloading station 120. The magnetic rod conveying device in this invention can realize the automatic loading and unloading of the magnetic rod 200, which can save labor costs and improve production efficiency.

[0040] It should be noted that a grinding station 130 can be set between the loading station 110 and the unloading station 120 of the frame 100. A positioning mechanism and a grinding mechanism can be set at the grinding station 130. When the magnetic rod 200 moves to the grinding mechanism, the positioning mechanism can clamp the magnetic rod 200 along the axial direction of the magnetic rod 200, and the grinding mechanism performs a feeding action and grinds the end of the magnetic rod 200. The specific structure and principle of the positioning mechanism and the grinding mechanism are common structures well known to those skilled in the art, and will not be described in detail here.

[0041] In addition, it should be noted that each pair of adjacent links 311 can be connected to each other by a connector 312, and the two ends of the connector 312 are respectively hinged to the two adjacent links 311.

[0042] like Figure 2As shown, the gripper assembly 400 can grip the magnetic rod 200 radially. The first positioning gripper 410 and the second positioning gripper 420 are respectively provided with a first arc surface 411 and a second arc surface 421, which are arranged facing each other. When the first positioning gripper 410 and the second positioning gripper 420 are in a gripping state, the first arc surface 411 and the second arc surface 421 interlock and enclose a gripping space. Specifically, the gripper assembly 400 can grip the middle of the magnetic rod 200. When two sets of gripper assemblies 400 are arranged side-by-side in the horizontal direction, the two sets of gripper assemblies 400 can respectively grip the magnetic rod 200 near its two ends. Furthermore, the inner wall of the gripping space can be configured to have a clearance fit with the outer surface of the magnetic rod 200 so that the first positioning gripper 410 and the second positioning gripper 420 will not jam during interlocking.

[0043] Reference Figures 1 to 3 The two sprockets are a driving sprocket 320 and a driven sprocket 330. The driving sprocket 320 can drive the driven sprocket 330 to rotate via the chain body 310. The driving sprocket 320 is located at the unloading station 120, and the driven sprocket 330 is located at the loading station 110. When the driving sprocket 320 pulls the driven sprocket 330, the chain link 311 located above the sprocket can be in a taut horizontal state.

[0044] like Figure 1 and Figure 2As shown, it also includes a feeding assembly 500 mounted on the frame 100. The feeding assembly 500 is located at the feeding station 110. The feeding assembly 500 includes a feeding frame 510 and a feeding plate 520. The feeding frame 510 is used to horizontally hold multiple magnetic rods 200 to be ground. The feeding frame 510 has a discharge port 511. The feeding plate 520 is connected to the bottom of the discharge port 511. The feeding plate 520 has a downwardly recessed first positioning part 521. The multiple magnetic rods 200 in the feeding frame 510 can be moved one by one from the discharge port 511 to the first positioning part 521. Within a positioning part 521, when the gripper assembly 400 moves to a position corresponding to the first positioning part 521, the first positioning gripper 410 is located in front of the first positioning part 521, and the second positioning gripper 420 is located diagonally below the first positioning part 521. As the gripper assembly 400 continues to move forward, the second positioning gripper 420 gradually flips and pushes the magnetic rod 200 towards the first positioning gripper 410 located in front, until the magnetic rod 200 is clamped between the first positioning gripper 410 and the second positioning gripper 420. It can be understood that the magnetic rod 200 located within the first positioning part 521 can be designed to be on the flipping path of the second positioning gripper 420, so that the second positioning gripper 420 can contact and push the magnetic rod 200 at the position of the first positioning part 521 during the flipping process. When the link 311 corresponding to the second positioning gripper 420 becomes completely horizontal, the first positioning gripper 410 and the second positioning gripper 420 interlock and clamp the magnetic rod 200. After the magnetic rod 200 in the first positioning part 521 is clamped and removed by the gripper assembly 400, the loading frame 510 can transport the next magnetic rod 200 to the first positioning part 521 through the discharge port 511. It should be noted that, in addition to the structure described above, the loading assembly in this invention can also be implemented by a robot arm replacing the loading plate 520 structure and clamping the magnetic rods 200 one by one to the loading station.

[0045] It is understood that the width of the feeding plate 520 in this embodiment of the invention can be set to be less than the length of the magnetic rod 200, so that the feeding plate 520 only supports the middle part of the magnetic rod 200, and the two ends of the magnetic rod 200 are located outside the feeding plate 520. This facilitates the gripper assembly 400 to clamp the magnetic rod 200 and also prevents the gripper assembly 400 from interfering with the feeding plate 520 during flipping or moving. Of course, it should be noted that when the width of the feeding plate 520 is equal to or greater than the width of the magnetic rod 200, a clearance groove can be opened in the feeding plate 520 at the position corresponding to the gripper assembly 400 to avoid the gripper assembly 400.

[0046] Reference Figure 2In this embodiment of the invention, the first positioning part 521 includes a first curved segment 521a and a second curved segment 521b. The first curved segment 521a and the second curved segment 521b have a smooth transition. The first curved segment 521a is located in front of the second curved segment 521b. The first curved segment 521a gradually slopes upward from back to front, and the curvature of the first curved segment 521a is greater than the curvature of the second curved segment 521b. Since the first positioning part 521 is concave downward, the magnetic rod 200 delivered from the discharge port 511 will not stay at the discharge port 511 nor move back to the discharge port. Specifically, the height of the front end of the first curved segment 521a can be the same as the height of the lower end of the first arc surface 411. Since the curvature of the first curved segment 521a is greater than the curvature of the second curved segment 521b, when the second positioning gripper 420 pushes the magnetic rod 200 towards the first positioning gripper 410, the magnetic rod 200 can move smoothly along the first curved segment 521a and finally enter the first arc surface 411. The rear part of the feeding plate 520 can be set to the same tilt angle as the discharge port 511, and the first positioning part 521 can be located at the front or middle part of the feeding plate 520.

[0047] Reference Figure 1 and Figure 2 The feeding assembly 500 in this embodiment of the invention further includes a partition plate 530 and two parallel guide plates 540. The guide plates 540 gradually slope downwards from back to front, and the front ends of the two guide plates 540 form a discharge port 511. The distance between the two guide plates 540 is greater than one time the diameter of the magnetic rod 200 but less than twice the diameter of the magnetic rod 200, so that only one row of magnetic rods 200 can pass through between the two guide plates 540, preventing the magnetic rods 200 from stacking in the vertical direction and facilitating the one-by-one discharge of the magnetic rods 200. The partition plate 530 is slidably mounted on the frame 100 in the vertical direction. Specifically, a sliding cylinder 550 is provided on the frame 100, which can drive the partition plate 530 to slide so that the bottom of the partition plate 530 intermittently blocks or opens the discharge port 511.

[0048] like Figure 1 , Figure 3 and Figure 4As shown, the embodiment of the present invention may further include a feeding assembly 600 disposed on the frame 100. The feeding assembly 600 is located at the feeding station 120. The feeding assembly 600 includes a feeding plate 610 and a transfer mechanism (not shown in the figure). The feeding plate 610 has a downwardly recessed second positioning part 611. When the gripper assembly 400 moves to the position corresponding to the second positioning part 611, the second positioning gripper 420 is located behind the second positioning part 611, and the first positioning gripper 410 is located diagonally below the second positioning part 611. As the gripper assembly 400 continues to move forward, the second positioning gripper 420 gradually flips and pushes the magnetic rod 200 forward. At this time, the feeding plate 610 supports the magnetic rod 200 until the magnetic rod 200 is pushed into the second positioning part 611. The transfer mechanism is configured to transfer the magnetic rod 200 in the second positioning part 611 to the next processing step.

[0049] Understandably, referring to Figure 3 and Figure 4 The second positioning part 611 includes a third curved segment 611a and a fourth curved segment 611b. The third curved segment 611a and the fourth curved segment 611b have a smooth transition. The third curved segment 611a is located in front of the fourth curved segment 611b. The fourth curved segment 611b gradually slopes downward from back to front, so that the magnetic rod 200 pushed by the second positioning gripper 420 can slide down along the fourth curved segment 611b under the action of gravity. The curvature of the fourth curved segment 611b is greater than the curvature of the third curved segment 611a, so that the magnetic rod 200 can be stopped at the third curved segment 611a, which facilitates the material transfer mechanism to clamp and transfer the magnetic rod 200 in the second positioning part 611 at a fixed position.

[0050] It should be noted that the chain assembly 300 in this embodiment of the invention can be configured as two sets, with the two sets of chain assemblies 300 arranged side by side, and the gripper assemblies 400 on the two sets of chain assemblies 300 can respectively grip the magnetic rod 200 near both ends.

[0051] The present invention also discloses a method for intermittent feeding of magnetic rods, using the magnetic rod conveying device as described in the foregoing embodiments, comprising the following steps:

[0052] Step S1: Move a magnetic rod 200 to the loading station 110 and rotate the sprocket in the chain assembly 300 located at the unloading station 120 so that the sprocket rotates by an angle a and drives the chain body 310 to rotate.

[0053] Step S2: Transfer the magnetic rod 200 on the unloading station 120 to the next processing step;

[0054] Step S3: Repeat steps S1 to S2 above to achieve continuous loading and unloading of magnetic rod 200.

[0055] It is understood that by using the magnetic rod conveying device in the embodiments of the present invention to convey the magnetic rod 200, the continuous automatic loading and unloading of the magnetic rod 200 can be realized, which can save labor costs and improve processing efficiency.

[0056] It should be noted that the angle 'a' of each rotation of the sprocket can be set to 60°, so that the first positioning gripper 410 and the second positioning gripper 420 in the gripper assembly 400 can be at the appropriate angle in the open state, facilitating loading and unloading. It can be understood that after the sprocket rotates two angles 'a', it can achieve loading of one magnetic rod 200 at the loading station and unloading of the other magnetic rod 200 at the unloading station.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A magnetic rod intermittent feeding device, characterized in that, include: The frame includes a loading station and a unloading station. The loading station holds the magnetic rod to be polished, and the unloading station can receive the polished magnetic rod. A chain assembly includes a chain body and two sprockets. The two sprockets are rotatably mounted on the loading station and the unloading station of the frame, respectively. The chain body is sleeved on the two sprockets and can rotate between the loading station and the unloading station. The chain body includes multiple interconnected chain links. Multiple sets of gripper assemblies are arranged on the chain body along the extension direction of the chain body. Each gripper assembly includes a first positioning gripper and a second positioning gripper. The first positioning gripper and the second positioning gripper in each set of gripper assemblies are respectively disposed on two adjacent chain links. The gripper assembly is configured to hold the magnetic rod at the loading station by the first positioning gripper and the second positioning gripper and release the magnetic rod at the unloading station. When the chain link moves to the sprocket, the first positioning jaw and the second positioning jaw in the same set of jaw assemblies are in an open state that moves away from each other. When the chain link moves between the two sprockets, the first positioning jaw and the second positioning jaw in the same set of jaw assemblies are in a clamping state that engages with each other. It also includes a feeding assembly mounted on the frame, located at the feeding station. The feeding assembly includes a feeding frame and a feeding plate. The feeding frame is used to horizontally hold multiple magnetic rods to be ground. The feeding frame has a discharge port. The feeding plate is connected to the bottom of the discharge port. The feeding plate has a downwardly recessed first positioning part, which includes a first curved segment and a second curved segment. The first curved segment and the second curved segment have a smooth transition. The first curved segment is located in front of the second curved segment. The first curved segment gradually slopes upward from back to front, and the curvature of the first curved segment is greater than that of the second curved segment. The multiple magnetic rods in the feeding frame can be moved one by one from the discharge port into the first positioning part. When the gripper assembly moves to the position corresponding to the first positioning part, the first positioning gripper is located in front of the first positioning part, and the second positioning gripper is located diagonally below the first positioning part. The magnetic rods located in the first positioning part are on the flipping path of the second positioning gripper. As the gripper assembly continues to move forward, the second positioning gripper gradually flips and pushes the magnetic rod to the first positioning gripper located in front, until the magnetic rod is clamped between the first positioning gripper and the second positioning gripper.

2. The magnetic rod intermittent feeding device according to claim 1, characterized in that, The gripper assembly can clamp the magnetic rod radially. The first positioning gripper and the second positioning gripper are respectively provided with a first arc surface and a second arc surface. The first arc surface and the second arc surface are arranged facing each other. When the first positioning gripper and the second positioning gripper are in the clamping state, the first arc surface and the second arc surface interlock and enclose a clamping space.

3. The magnetic rod intermittent feeding device according to claim 1, characterized in that, The two sprockets are a driving sprocket and a driven sprocket. The driving sprocket can drive the driven sprocket to rotate through the chain body. The driving sprocket is located at the unloading station, and the driven sprocket is located at the loading station.

4. The magnetic rod intermittent feeding device according to claim 1, characterized in that, The width of the feeding plate is less than the length of the magnetic rod.

5. The magnetic rod intermittent feeding device according to claim 1, characterized in that, The feeding assembly also includes a partition plate and two parallel guide plates. The guide plates gradually slope downward from back to front. The front ends of the two guide plates form the discharge port. The distance between the two guide plates is greater than one time the diameter of the magnetic rod but less than twice the diameter of the magnetic rod. The partition plate is slidably mounted on the frame in a vertical direction. A sliding cylinder is provided on the frame. The sliding cylinder can drive the partition plate to slide so that the bottom of the partition plate intermittently blocks or opens the discharge port.

6. The magnetic rod intermittent feeding device according to claim 1, characterized in that, It also includes a feeding assembly mounted on the frame, the feeding assembly being located at the feeding station, the feeding assembly including a feeding plate and a transfer mechanism, the feeding plate having a downwardly recessed second positioning portion, when the gripper assembly moves to a position corresponding to the second positioning portion, the second positioning gripper is located behind the second positioning portion, the first positioning gripper is located diagonally below the second positioning portion, as the gripper assembly continues to move forward, the second positioning gripper gradually flips and pushes the magnetic rod forward until the magnetic rod is pushed into the second positioning portion, the transfer mechanism being configured to transfer the magnetic rod in the second positioning portion to the next processing step.

7. The magnetic rod intermittent feeding device according to claim 6, characterized in that, The second positioning part includes a third curve segment and a fourth curve segment, which are smoothly transitioned. The third curve segment is located in front of the fourth curve segment, and the fourth curve segment gradually slopes downward from back to front, with the curvature of the fourth curve segment being greater than that of the third curve segment.

8. The magnetic rod intermittent feeding device according to claim 1, characterized in that, The chain assembly is provided in two sets, which are arranged side by side. The gripper assemblies on the two sets of chain assemblies can respectively grip the magnetic rod near both ends.

9. A method for intermittent feeding of a magnetic rod, characterized in that, Using the magnetic rod intermittent feeding device as described in claim 1 includes the following steps: Step S1: A magnetic rod is fed to the loading station, and the sprocket in the chain assembly located at the unloading station is rotated so that the sprocket rotates by an angle α and drives the chain body to rotate. Step S2: Transfer the magnetic rod on the unloading station to the next processing step; Step S3: Repeat steps S1 to S2 above to achieve continuous loading and unloading of magnetic rods.

10. A method for intermittent feeding of a magnetic rod according to claim 9, characterized in that, The sprocket rotates at an angle α of 60° each time.

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