Automatic feeding mechanism

Abstract

The utility model discloses an automatic feeding mechanism which comprises a positioning material guiding part, a material pushing assembly and a driving assembly, a material guiding groove is formed in the positioning material guiding part in a penetrating mode, the material pushing assembly comprises a conveying block and a material pushing rod which are fixedly connected, the conveying block is movably arranged at one end of the positioning material guiding part, one end of the material pushing rod is movably contained in the material guiding groove, and the driving assembly drives the conveying block to rotate. The driving assembly comprises a driver and a synchronous belt, the synchronous belt is fixedly connected with the conveying block, and the driver is used for driving the synchronous belt to reciprocate so as to drive the conveying block to reciprocate, so that the pushing rod reciprocates in the guide groove to achieve feeding. According to the driving mode that the driver is matched with the synchronous belt, the situation that frequent replacement is needed due to serious abrasion existing in air cylinder driving in the prior art is improved, the centerless grinding machine can safely and effectively run for two years or above without replacement, and therefore the consumable cost and the failure rate of the centerless grinding machine are effectively reduced, and the production cost is effectively saved; and the equipment stability and the production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of PCB micro drill manufacturing and production, in particular to an automatic feeding mechanism for a special centerless grinder for PCB micro drill. Background Art

[0002] PCB micro drills are used for PCB processing and production. As the density of holes on PCB boards increases and the hole diameter decreases, the requirements for the micro diameter and precision of micro drills used to process holes are also increasing. One type of PCB micro drilling processing is grinding using a centerless grinder.

[0003] At present, the feeding mechanism of the centerless grinder for PCB micro drills generally adopts a combination of cylinders and hoppers, and the feeding action is realized through the reciprocating motion of the cylinder. However, due to the limited service life of the cylinder, the cylinder is replaced frequently, and the cylinder consumption cost is high, which leads to an increase in the cost of centerless grinder consumables. In addition, frequent replacement of cylinders also leads to reduced processing efficiency.

[0004] Therefore, it is necessary to provide an automatic feeding mechanism that can effectively reduce the cost of centerless grinder consumables, improve equipment stability and centerless grinding efficiency, so as to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an automatic feeding mechanism which can effectively reduce the cost of consumables of a centerless grinder, improve the stability of the equipment and the efficiency of the centerless grinding process.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: to provide an automatic feeding mechanism, which includes a positioning guide, a pushing assembly and a driving assembly; wherein, a material guide groove is opened through the positioning guide; the pushing assembly includes a conveying block and a pushing rod, the conveying block is movably arranged at one end of the positioning guide, one end of the pushing rod is fixed to the conveying block, and the other end of the pushing rod is movably accommodated in the material guide groove; the driving assembly includes a driver and a synchronous belt, the synchronous belt is fixedly connected to the conveying block, and the driver is used to drive the synchronous belt to reciprocate to drive the conveying block to reciprocate, so that the pushing rod can reciprocate in the material guide groove to realize feeding.

[0007] Preferably, the pusher assembly also includes a floating joint, and the pusher rod is connected to the conveying block via the floating joint, thereby allowing the pusher rod and the conveying block to float up and down and left and right at a certain angle, thereby realizing automatic positioning between the pusher rod and the pushed material, so as to solve the problem of slight deformation of the pusher rod caused by inconsistent material resistance during pushing, resulting in material jamming / jumping, and the problem of severe wear of the pusher rod and the material guide trough caused by the reverse force on the pusher rod during pushing.

[0008] Preferably, the driving assembly also includes a synchronous wheel, two of the synchronous wheels are arranged at an interval on one side of the pushing assembly, the synchronous belt is wound around the two synchronous wheels, and the driver is used to drive at least one of the synchronous wheels to rotate forward or reverse, thereby driving the synchronous belt to reciprocate, thereby driving the conveying block to reciprocate, ensuring the accuracy of the pushing rod movement, and achieving precision assurance of the mechanism.

[0009] Preferably, the driving assembly further comprises a fixed plate and a pressure plate, the fixed plate and the pressure plate clamp the synchronous belt and are fixedly connected, and one of the fixed plate and the pressure plate is fixed to the conveying block.

[0010] Preferably, the automatic feeding mechanism also includes a guide assembly, which includes a slidably matched linear slide rail and a slider, the linear slide rail is arranged at one end of the positioning guide member and its axial direction is consistent with the axial direction of the guide trough, the slider is connected to the conveying block, and the slider is driven to reciprocate on the linear slide rail through a driver and a synchronous belt, thereby ensuring the smoothness of the forward advancement of the conveying block and the straightness of the push rod and the material in the guide trough, reducing the wear of the push rod and the guide trough, and ensuring the accuracy of the mechanism.

[0011] Preferably, the guide assembly further comprises a limit block, and the limit block is arranged at both ends of the linear slide rail to limit the conveying block.

[0012] Preferably, the automatic feeding mechanism also includes a base plate, the positioning guide and the conveying block are sequentially installed on the top surface of the base plate, the synchronous belt is installed on the top surface of the base plate and arranged in parallel with the conveying block, and the driver is installed on the bottom surface of the base plate, thereby effectively saving installation space and making the structure of the mechanism more compact.

[0013] Preferably, the automatic feeding mechanism also includes a protective cover, which is at least arranged above the pushing assembly and the driving assembly to prevent water mist / debris from entering the transmission parts of the mechanism and causing wear and aging of the parts, thereby effectively improving the service life of the mechanism accessories and reducing the failure rate.

[0014] Preferably, the driver is a servo motor, which drives the conveying block to move back and forth through the servo motor and the synchronous belt, thereby ensuring the accuracy of the push rod movement, and the pushing speed has a larger speed adjustment space than the cylinder pushing mechanism in the prior art. The pushing speed can be adjusted according to demand, which is convenient and fast, and the speed can be increased by up to 1s each time, thereby effectively improving production efficiency; in addition, it also overcomes the problems of severe wear and inaccurate positioning of the reciprocating cylinder, effectively reduces the cost of using consumables of the centerless grinder, and improves equipment stability and centerless grinding efficiency.

[0015] Preferably, the automatic feeding mechanism also includes a hopper, the discharge port of the hopper is arranged above the material guide trough, the hopper is used to store materials and release the materials into the material guide trough one by one, and through the cooperation between the hopper and the conveying block, the hopper releases the materials when the pushing rod retreats, thereby achieving the coordination of the time when the pushing rod pushes the material and the time when the hopper releases the material, ensuring that the material feeding action is in place and accurate, and improving the feeding efficiency.

[0016] Compared with the prior art, the automatic feeding mechanism of the utility model has a positioning guide and a pusher assembly arranged in sequence, the positioning guide is provided with a guide trough, the pusher assembly includes a conveying block and a pusher rod connected to each other, and its driving assembly includes a driver and a synchronous belt, the synchronous belt is fixedly connected to the conveying block, and the driver drives the synchronous belt to move back and forth to drive the conveying block to move back and forth, thereby making the pusher rod move back and forth in the guide trough to realize feeding, so that the materials in the guide trough push each other head to tail in sequence and move into the grinding mechanism of the centerless grinder. The driving mode in which the driver cooperates with the synchronous belt in the present application improves the situation that the cylinder drive in the prior art is severely worn and needs frequent replacement, and can operate safely and effectively for more than two years without replacement, thereby effectively reducing the consumables cost and failure rate of the centerless grinder, effectively saving production costs, and improving equipment stability and production efficiency; in addition, the driving mode in which the driver cooperates with the synchronous belt has a larger speed adjustment space than that of the cylinder drive, and the pusher speed can be adjusted according to demand, which is convenient and fast, and effectively improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the automatic feeding mechanism of the utility model.

[0018] Figure 2 yes Figure 1 Exploded diagram of .

[0019] Figure 3 yes Figure 2 Schematic diagram of the structure from another angle.

[0020] Figure 4 yes Figure 2 Schematic diagram of the bottom structure.

[0021] Figure 5 yes Figure 4 Schematic diagram of the structure from another angle.

[0022] Figure 6 It is a top view of the automatic feeding mechanism of the utility model after removing the protective cover.

[0023] Figure 7 yes Figure 6 Side view of.

[0024] Figure 8It is a schematic diagram of the state of the automatic feeding mechanism and the hopper of the utility model. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are now described with reference to the accompanying drawings, in which similar element numbers represent similar elements. It should be noted that the orientation descriptions involved in the present invention, such as the orientations or positional relationships indicated by up, down, left, right, front, and back, are all based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present application or / and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present application. The first, second, etc. described are only used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] Combination Figure 1-Figure 8 As shown, the automatic feeding mechanism 100 provided by the utility model is particularly suitable for a centerless grinder dedicated to PCB micro drills, and is used to transport the micro drills to the grinding mechanism of the centerless grinder for grinding. Of course, it is not limited to this, and can also be used for feeding other similar materials.

[0027] Continue to combine Figure 1-Figure 8 As shown, in one embodiment of the present utility model, the automatic feeding mechanism 100 includes a positioning guide 110, a material pushing assembly 120 and a driving assembly 130. The positioning guide 110 and the material pushing assembly 120 are sequentially arranged in the same direction, the positioning guide 110 is used to receive materials; the driving assembly 130 is connected to the material pushing assembly 120 and is used to drive the material pushing assembly 120 to move back and forth, and the material on the positioning guide 110 is pushed to the grinding mechanism for grinding through the reciprocating movement of the material pushing assembly 120.

[0028] In the utility model, the automatic loading mechanism 100 also includes a base plate 150, the positioning guide 110 and the pushing assembly 120 are sequentially installed on the top surface of the base plate 150, and the driving assembly 130 is installed on the base plate 150 and arranged in parallel with the pushing assembly 120, thereby saving installation space. Of course, the driving assembly 130 is not limited to this position.

[0029] Combination Figure 1-Figure 3As shown, in the utility model, the positioning guide member 110 is in the shape of a rectangular parallelepiped, and a guide groove 111 is provided through the positioning guide member 110, and the guide groove 111 is provided along the length direction of the positioning guide member 110 and passes through its two end surfaces. The positioning guide member 110 is fixed to one end of the base plate 150, and the other end of the positioning guide member 110 is connected to the grinding mechanism of the centerless grinder. The positioning guide member 110 is set to a certain length, so that the guide groove 111 can accommodate multiple materials in sequence, so that the multiple materials can push each other head to tail in sequence in the guide groove 111. In a specific embodiment, about ten materials can be arranged longitudinally in sequence in the guide groove 111. Of course, it is not limited to this setting method, even if the length of the positioning guide member 110 can only accommodate one material, it is also feasible.

[0030] Continue to combine Figure 1-Figure 3 As shown, in the present invention, the pusher assembly 120 includes a conveying block 121 and a pusher rod 122. The conveying block 121 is movably disposed on the bottom plate 150 and is located at one end of the positioning guide member 110. One end of the pusher rod 122 is fixed to the conveying block 121, and the other end of the pusher rod 122 is movably accommodated in the guide trough 111. The driving assembly 130 includes a driver 131 and a synchronous belt 132. The synchronous belt 132 is mounted on the bottom plate 150 and is fixedly connected to the conveying block 121. The driver 131 is used to drive the synchronous belt 132 to reciprocate to drive the conveying block 121 to reciprocate, so that the pusher rod 122 reciprocates in the guide trough 111 to realize feeding.

[0031] In one embodiment, the synchronous belt 132 is installed on the top surface of the base plate 150 and arranged in parallel with the conveying block 121, and the driver 131 is installed on the bottom surface of the base plate 150, thereby effectively saving installation space and making the structure of the mechanism more compact.

[0032] In the present invention, the driver 131 is preferably a servo motor, and the servo motor and the synchronous belt 132 cooperate to drive the conveying block 121 to move back and forth, which not only ensures the accuracy of the action of the push rod 122, but also has a larger speed adjustment space for the push speed than the cylinder push mechanism in the prior art. The push speed can be adjusted according to demand, which is convenient and fast, and the fastest speed can be increased by 1s each time, thereby effectively improving production efficiency. In addition, the driving method of the servo motor and the synchronous belt 132 improves the situation of severe reciprocating wear of the cylinder in the prior art and the situation of jamming / jumping of the material due to inaccurate positioning, thereby improving the stability of the equipment and effectively saving production costs.

[0033] In the utility model, the driving mode in which the driver 131 cooperates with the synchronous belt 132 can operate safely and effectively for more than two years without replacement. Compared with the average service life of a cylinder in the cylinder pushing mechanism in the prior art, which is about seven days and the cylinder is frequently replaced, the present application effectively reduces the failure rate of components and the cost of consumables, thereby effectively saving production costs.

[0034] Combine the following Figure 2-3 , Figure 6 As shown, in a preferred embodiment of the present utility model, the automatic feeding mechanism 100 further includes a guide assembly 140. Specifically, the guide assembly 140 includes a linear slide 141, a slider 142 and a stop block 143. The linear slide 141 is mounted on the bottom plate 150 and is located at one end of the positioning guide member 110, and the axial direction of the linear slide 141 is consistent with the axial direction of the guide groove 111. The slider 142 is slidably connected to the linear slide 141, and two stop blocks 143 are provided at both ends of the linear slide 141 to limit the conveying block 121. At the same time, the slider 142 is also connected to the conveying block 121. Therefore, the slider 142 is driven to reciprocate on the linear slide rail 141 by the reciprocating movement of the synchronous belt 132, thereby ensuring the smoothness of the forward advancement of the conveying block 121 and the straightness of the material in the push rod 122 and the guide trough 111, reducing the wear of the push rod 122 and the guide trough 111, and ensuring the accuracy of the mechanism.

[0035] Continue to combine Figure 2-3 , Figure 6-7 As shown, in a preferred embodiment of the present invention, the pusher assembly 120 further includes a floating joint 123 and a connecting sleeve 124, the connecting sleeve 124 is fixed to one end of the pusher rod 122, and the end of the pusher rod 122 fixed with the connecting sleeve 124 is connected to the conveying block 121 through the floating joint 123. Therefore, in the process of the conveying block 121 pushing the pusher rod 122 to move, the pusher rod 122 and the conveying block 121 are allowed to float up and down and left and right at a certain angle, so as to realize automatic positioning between the pusher rod 122 and the pushed material, so as to solve the problem of the pusher rod 122 being slightly deformed due to the inconsistent material resistance during pushing, resulting in material jamming / jumping, and the problem of the pusher rod 122 and the guide trough 111 being seriously worn due to the reverse force on the pusher rod 122 during pushing.

[0036] Combine the following Figure 2-7As shown, in this embodiment, the driving assembly 130 also includes two synchronous wheels 133, which are installed on the base plate 150 at intervals and located on one side of the linear slide rail 141, and each synchronous wheel 133 can be rotatably arranged, and the synchronous belt 132 is wound around the two synchronous wheels 133, and the driver 131 is used to drive at least one synchronous wheel 133 to rotate forward or reverse. In a specific embodiment, the driver 131 is installed on the bottom surface of the base plate 150 and connected to one of the synchronous wheels 133, and the other synchronous wheel 133 is pivoted to the base plate 150 through a rotating shaft. When the driver 131 drives the synchronous wheel 133 connected thereto to rotate forward or reverse, it can drive the synchronous belt 132 to reciprocate, thereby driving the conveying block 121 to reciprocate, ensuring the accuracy of the action of the push rod 122 and the accuracy of the mechanism.

[0037] More specifically, a water baffle 152 is further provided below the synchronous wheel 133 connected to the driver 131, and the water baffle 152 is fixed to the top plate of the bottom plate 150, as shown in FIG. Figure 2-3 As shown, the water baffle 152 is used to prevent water mist / debris etc. from entering the transmission parts of the mechanism and causing the parts to wear and age. The other synchronous wheel 133 is installed through a mounting plate 151, and the mounting plate 151 is fixed to the bottom surface of the bottom plate 150, as shown in FIG. Figure 4-5 Of course, the two synchronous wheels 133 are not limited to this installation method.

[0038] Combination Figure 2-3 , Figure 6 As shown, in this embodiment, the driving assembly 130 further includes a fixing plate 134 and a pressing plate 135, the fixing plate 134 and the pressing plate 135 clamp the synchronous belt 132 and are fixedly connected, and one of the fixing plate 134 and the pressing plate 135 is fixed to the conveying block 121. Specifically, the fixing plate 134 is fixed to the side of the conveying block 121, and when the synchronous belt 132 reciprocates, the conveying block 121 is driven to move by the fixing plate 134 and the pressing plate 135. Of course, the conveying block 121 and the synchronous belt 132 can also be connected by other fixed structures.

[0039] Combine the following Figure 1-Figure 5As shown, in a preferred embodiment of the present utility model, the automatic feeding mechanism 100 further includes a protective cover 160, and the protective cover 160 is at least provided above the pushing assembly 120 and the driving assembly 130. In a specific embodiment, the protective cover 160 is provided above the conveying block 121, the floating joint 123, the connecting sleeve 124 and the driving assembly 130 of the pushing assembly 120, the positioning guide member 110 is located outside the protective cover 160, and one end of the pushing rod 122 extends out of the protective cover 160 and is accommodated in the guide groove 111. The provision of the protective cover 160 can prevent water mist / debris from entering the transmission components of the mechanism and causing the components to wear and age, effectively improving the service life of the mechanism accessories and reducing the failure rate.

[0040] See also Figure 8 As shown, in a preferred embodiment of the present utility model, the automatic feeding mechanism 100 further includes a hopper 170, the bottom of the hopper 170 is provided with a discharge port, and the hopper 170 is preferably provided with a material shaking cylinder 171, the hopper 170 is used to store materials, and the materials in the hopper 170 are arranged downward in an orderly manner through the action of the material shaking cylinder 171. Among them, the structure and setting method of the hopper 170 and the material shaking cylinder 171 are conventional methods in the art and will not be described in detail.

[0041] After the hopper 170 is installed, the discharge port of the hopper 170 is located above the material guide trough 111. The hopper 170 is preferably located at one end of the material guide trough 111 close to the push assembly 120, but is not limited thereto. Under the action of the material shaking cylinder 171, the materials are arranged downward in an orderly manner, and the lowest material of the hopper 170 can be automatically released into the material guide trough 111 under the action of gravity. The present application cooperates with the hopper 170 and the conveying block 121, so that the hopper 170 releases the material when the push rod 122 retreats, thereby achieving the coordination of the time for the push rod 122 to push the material and the time for the hopper 170 to release the material, and can be accurate to 0.1 seconds, ensuring that the material loading action is accurate and in place, and improving the efficiency of loading.

[0042] Continue to combine Figure 1-Figure 8 As shown, the action principle and process of the automatic feeding mechanism 100 of the present invention are explained.

[0043] After the materials are put into the hopper 170, the materials are arranged downward in an orderly manner through the action of the material shaking cylinder 171, and the material at the bottom of the hopper 170 automatically falls into the guide groove 111 of the positioning guide member 110 under the action of gravity. When the PCB micro drill is conveyed, about ten PCB micro drills are arranged vertically in the guide groove 111 in sequence.

[0044] Subsequently, the driver 131 of the automatic feeding mechanism 100 is in operation, and the feeding action begins to be executed. The driver 131 drives the synchronous belt 132 to move to drive the conveying block 121 to move forward, thereby pushing the push rod 122 forward. When the first material is pushed forward to the right position, the driver 131 drives the synchronous belt 132 to move in the opposite direction to drive the conveying block 121 to move backward, thereby pushing the push rod 122 backward, so that the second material falls into the guide groove 111 by its own weight, and the control of the pushing action and the pause time after pushing is realized, and it can be accurate to 0.1 seconds, ensuring that the material feeding action is accurate in place. Then the driver 131 drives the push rod 122 forward again to push the second material, so that the materials push each other head to tail in turn to move in the guide groove 111 and finally enter the grinding mechanism of the centerless grinder for grinding. In this reciprocating action, the materials are pushed into the grinding mechanism one by one to realize the grinding processing of the product materials. In the process of the push rod 122 pushing the material forward, the setting of the floating joint 123 allows the push rod 122 and the conveying block 121 to float up and down and left and right at a certain angle, thereby realizing automatic positioning between the push rod 122 and the pushed material, so as to solve the problem of slight deformation of the push rod 122 and material jamming / jumping caused by inconsistent material resistance during pushing, and solve the problem of severe wear of the push rod 122 and the material guide trough 111 caused by the reverse force on the push rod 122 during pushing.

[0045] In summary, since the automatic feeding mechanism 100 of the utility model has a positioning guide member 110 and a pushing assembly 120 which are arranged in sequence, the positioning guide member 110 is provided with a guide groove 111, the pushing assembly 120 includes a conveying block 121 and a pushing rod 122 which are connected, and its driving assembly 130 includes a driver 131 and a synchronous belt 132, the synchronous belt 132 is fixedly connected to the conveying block 121, and the synchronous belt 132 is driven to reciprocate by the driver 131 to drive the conveying block 121 to reciprocate, thereby making the pushing rod 122 reciprocate in the guide groove 111 to realize feeding, so that the materials in the guide groove 111 push each other head to tail in sequence and move into the grinding mechanism of the centerless grinder. The driving mode in which the driver 131 cooperates with the synchronous belt 132 improves the situation in which the cylinder drive in the prior art suffers from severe wear and needs frequent replacement, and can operate safely and effectively for more than two years without replacement, thereby effectively reducing the cost of consumables and failure rate of the centerless grinder, effectively saving production costs, and improving equipment stability and production efficiency; in addition, the driving mode in which the driver 131 cooperates with the synchronous belt 132 has a larger speed adjustment space than that of the cylinder drive, and the pushing speed can be adjusted according to demand, which is convenient and quick, and effectively improves production efficiency.

[0046] The grinding mechanism involved in the present invention is a conventional structure well known to those skilled in the art, and will not be described in detail herein.

[0047] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. An automatic feeding mechanism, characterized in that: include: A positioning material guide member, wherein a material guide groove is provided through the positioning material guide member; A material pushing assembly, comprising a conveying block and a material pushing rod, wherein the conveying block is movably arranged at one end of the positioning material guiding member, one end of the material pushing rod is fixed to the conveying block, and the other end of the material pushing rod is movably accommodated in the material guiding groove; The driving assembly includes a driver and a synchronous belt, wherein the synchronous belt is fixedly connected to the conveying block, and the driver is used to drive the synchronous belt to move back and forth to drive the conveying block to move back and forth, so that the push rod moves back and forth in the material guide groove to realize feeding.

2. The automatic feeding mechanism according to claim 1, characterized in that: The pusher assembly also includes a floating joint, and the pusher rod is connected to the conveying block through the floating joint.

3. The automatic feeding mechanism according to claim 1, characterized in that: The driving assembly also includes a synchronous wheel, two synchronous wheels are arranged at one side of the pushing assembly at an interval, the synchronous belt is wound around the two synchronous wheels, and the driver is used to drive at least one of the synchronous wheels to rotate.

4. The automatic feeding mechanism according to claim 3, characterized in that: The driving assembly further includes a fixed plate and a pressing plate, wherein the fixed plate and the pressing plate clamp the synchronous belt and are fixedly connected, and one of the fixed plate and the pressing plate is fixed to the conveying block.

5. The automatic feeding mechanism according to any one of claims 1 to 4, characterized in that: It also includes a guide assembly, which includes a slidably matched linear slide rail and a slider. The linear slide rail is arranged at one end of the positioning guide member and its axial direction is consistent with the axial direction of the guide groove. The slider is connected to the conveying block.

6. The automatic feeding mechanism according to claim 5, characterized in that: The guide assembly also includes a limit block, which is arranged at both ends of the linear slide rail to limit the conveying block.

7. The automatic feeding mechanism according to any one of claims 1 to 4, characterized in that: It also includes a bottom plate, the positioning guide and the conveying block are sequentially installed on the top surface of the bottom plate, the synchronous belt is installed on the top surface of the bottom plate and arranged in parallel with the conveying block, and the driver is installed on the bottom surface of the bottom plate.

8. The automatic feeding mechanism according to any one of claims 1 to 4, characterized in that: It also includes a protective cover, which is at least arranged above the pushing assembly and the driving assembly.

9. The automatic feeding mechanism according to any one of claims 1 to 4, characterized in that: The driver is a servo motor.

10. The automatic feeding mechanism according to any one of claims 1 to 4, characterized in that: It also includes a hopper, the discharge port of which is arranged above the material guide chute, and the hopper is used to store materials and release the materials into the material guide chute one by one.

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