Nut tapping equipment and feeding device thereof

Abstract

The utility model relates to the technical field of nut machining equipment, in particular to nut tapping equipment and a feeding device thereof. The feeding device of the nut tapping equipment comprises a conveying mechanism and a posture adjusting and material blocking mechanism, the conveying mechanism is provided with a conveying face used for conveying nut blanks to a set feeding position and a limiting channel used for keeping the nut blanks to be sequentially arranged on the conveying face, and the posture adjusting and material blocking mechanism comprises a material blocking part and a driving device. The material blocking part is provided with a material blocking face used for abutting against the side face of the nut blank so as to keep the nut blank at the feeding position, when the driving device drives the material blocking part to move towards the side where the nut blank is located, the material blocking part exerts pushing force in the direction opposite to the conveying direction on the nut blank abutting against the material blocking part so that the nut blank can move, and the posture of the nut blank is changed. And the nut blank can easily achieve the set feeding posture that the side face is attached to the material blocking face, follow-up positioning operation is facilitated, and manual intervention is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut machining equipment technical field, concretely relates to a nut tapping equipment and its feeding device. BACKGROUND

[0002] The hexagon nut tapping is the process of processing the thread in the hexagon nut blank light hole, and the automatic tapping equipment is usually used for the mass nut processing, the tapping equipment generally includes the feeding device, the grabbing device and the tapping device, the feeding device transports the nut blank to the set feeding position through the conveying line, the grabbing device grabs the nut blank in the feeding position and moves the nut blank to the positioning clamp of the tapping device and clamps and positions, then the tapping head of the tapping device is used for tapping operation.

[0003] Generally, the nut blanks are stacked in the stock bin, the nut blanks in the ground stock bin are lifted to the conveying line of the feeding device of the nut feeding equipment by the elevator at present, the conveying line of the feeding device of the nut feeding equipment usually adopts the chain plate conveyor or the belt conveyor, the conveying mechanism has the conveying surface for carrying and moving the nut blank, the nut blank in the stock bin is moved to the conveying surface by the elevator, the elevator is the feeding mechanism for transferring the nut blank from the stock bin to the conveying mechanism, the elevator is located at the side of the starting end of the material receiving area of the conveying mechanism, the nut blank is lifted by the elevator, the nut blank falls on the conveying surface from the material receiving area of the conveying mechanism one by one, and then moves to the position needing feeding along the conveying surface, in order to ensure that the nut blank is in the relatively stable state during the conveying process, the nut blank is usually transferred in the horizontal state, that is, the center light hole of the nut blank for forming the thread hole faces upwards, the nut blank is supported on the conveying surface in one end face and is conveyed, and in order to make the feeding process orderly, the nut blanks need to be arranged in the horizontal state and orderly arranged in a row on the conveying path, the nut blank on the conveying surface is only in the set feeding position in the front position, so as to be grabbed by the manipulator, the manipulator generally adopts the inner support clamp to support tightly in the center hole of the nut blank to realize the grabbing action.

[0004] At present, in order to determine the feeding position, a blocking piece is usually arranged at the terminal end of the conveying mechanism, the blocking piece has a blocking surface facing the nut blank, the blocking surface is a vertical surface and corresponds to the position of the conveying surface, when the nut blank advances to the position of the blocking surface, the nut blank reaches the feeding position, and the nut blank is blocked and slides relative to the conveying surface before being taken away by the manipulator. In order to ensure the orderly arrangement of the nut blanks on the conveying surface, limiting plates are arranged on the left and right sides of the conveying surface, and a limiting channel is formed between the two limiting plates, which is just enough for the nut blanks to pass through in an orderly arrangement, so that the nut blanks are arranged in a row, and after the nut blank at the front position of the row is taken away by the manipulator, the nut blank next to it is abutted against the blocking surface under the driving of the conveying mechanism for re-feeding. Meanwhile, the number of nut blanks on the conveying surface is generally large, and when the nut blank at the front position abuts against the blocking surface, the nut blanks behind can abut against the nut blank in front in turn and slide relative to the conveying surface, waiting for feeding.

[0005] The nut is usually a hexagonal nut, which has edges and sides. The corresponding nut blank is in the shape of a hexagonal prism, has six side edges and six side surfaces, and the end surface is a prism bottom surface, and a light hole for forming a threaded hole is arranged at the center. The positioning clamp of the tapping device is adapted to the shape of the nut blank, so that the hexagonal nut blank needs to be placed in the positioning clamp in a set posture to ensure that the side surface of the nut blank is well fitted with the corresponding positioning surface of the positioning clamp.

[0006] Generally, under the natural force state of the nut blank on the conveying surface, after abutting against the blocking surface, the nut blank will basically form a state that one side surface of the nut blank is in close contact with the blocking surface, which is the set feeding state, and the nut blank in this state is taken away by the manipulator and placed in the adapted positioning clamp. The blocking surface is adjacent to the edge of the conveying mechanism, and when the nut blank is in the feeding position, it is also at the terminal end of the conveying mechanism, and the nut blank is still on the conveying surface and is limited by the limiting plates on the left and right sides. Correspondingly, the distance between the limiting plates on the left and right sides of the conveying surface is slightly larger than the distance between the two farthest side edges of the nut blank, so that each nut blank can be arranged in the limiting channel in the state that the side surfaces are in close contact.

[0007] However, in the actual production process, the nut blanks freely falling on the conveying surface are not arranged in an orderly manner, and there is a situation that the side surfaces of adjacent two nut blanks are not aligned or the side edges abut against the side surfaces. When the nut blank abuts against the blocking surface, the side edge of the nut blank may abut against the blocking surface, and the angle between the side surface and the blocking surface is large, so that the nut blank cannot be automatically aligned, and the nut blank may remain in the state that the side edge abuts against the blocking surface, which is different from the set feeding state that the side surface abuts against the blocking surface, so that the subsequent nut blank cannot be placed in the positioning clamp or cannot be positioned after being placed, and manual intervention is required, which is inconvenient to use. The utility model discloses

[0008] The purpose of this utility model is to provide a feeding device for a nut tapping machine, so as to solve the problem that the feeding device of the current nut tapping machine is easily affected by the non-set feeding posture of the nut blank side edge abutting the material stop surface, which affects the subsequent normal positioning operation; the purpose of this utility model is also to provide a nut tapping machine to solve the above problems.

[0009] The technical solution of the feeding device of the nut tapping equipment of this utility model is as follows:

[0010] A feeding device for a nut tapping machine includes a conveying mechanism and an adjusting stop mechanism. The conveying mechanism has a conveying surface for conveying nut blanks to a set feeding position and a limiting channel for maintaining the sequential arrangement of each nut blank on the conveying surface. The adjusting stop mechanism includes a stop member corresponding to the feeding position and a driving device for driving the stop member to reciprocate. The stop member has a stop surface for abutting against the side of the nut blank to hold it in the feeding position. When the driving device drives the stop member to move toward the side where the nut blank is located, the stop member applies a thrust in the opposite direction to the conveying direction to the nut blank it abuts, so that the nut blank moves.

[0011] Beneficial effects: This utility model modifies the feeding device of the existing nut tapping equipment by making the stop component movable. When the nut blank is conveyed to the feeding position along the limiting channel on the conveying surface, the nut blank abuts against the stop surface of the stop component. At this time, the drive device can drive the stop component to move towards the side where the nut blank is located, applying a thrust to the nut blank in the opposite direction of the conveying direction, causing the nut blank to move. This allows the posture of the nut blank to be adjusted, so that the nut blank can re-mate with the stop surface. If the stop component pushes the nut blank... Before the blank, the nut blank is in a non-set feeding posture with its side edge abutting the stop surface. After the stop component pushes the nut blank, it is forced to move, causing it to break away from its original stable non-set feeding posture. At the same time, it is subjected to the positive thrust of the stop component, the pushing force of the conveying surface, the blocking force of the stop surface, and the squeezing force of the nut blank behind it. This makes it easier for the foremost nut blank, which is abutting the stop surface again, to achieve the set feeding posture with its side edge fitting against the stop surface. This is beneficial for subsequent normal positioning operations with the robot arm, reduces manual intervention, and is convenient to use.

[0012] Furthermore, the stop member has a push position and a stop position in its reciprocating stroke. When the stop member moves to the push position, it extends above the conveying surface to push the nut blank. When the stop member moves to the stop position, it has a part on the conveying direction side of the conveying surface and is used to hold the nut blank in the loading position.

[0013] Further, the driving device is located on the side of the material blocking piece away from the conveying surface and is used to drive the material blocking piece to move linearly back and forth, and the moving direction of the material blocking piece is consistent with the extension direction of the conveying mechanism.

[0014] Further, the driving device is a telescopic cylinder, and two or more telescopic rods are arranged on the piston of the telescopic cylinder, and the ends of the telescopic rods are fixed with the material blocking piece.

[0015] Further, the area of the material blocking surface is set to be greater than the area of the side surface of the nut blank.

[0016] Further, the driving device has a set action frequency for pushing the corresponding nut blank by the material blocking piece each time the nut blank is fed.

[0017] Further, the conveying mechanism is provided with a receiving area corresponding to the nut blank feeding mechanism, so that the nut blank falls on the conveying surface, and the conveying surface is used to convey the nut blank from the receiving area to the set feeding position, and the feeding device further comprises a fixedly arranged ejecting frame, the ejecting frame has an ejecting part located on the side of the receiving area along the conveying direction, the ejecting part is located above the conveying surface and forms a gap with the conveying surface for the nut blank to pass through, the gap is smaller than the height of the nut blank in the vertical position, and the ejecting part has a guide surface on the side of the receiving area, the guide surface is used to prevent the nut blank in the vertical position and guide the nut blank in the vertical position to deviate to the side of the conveying mechanism to leave the conveying surface.

[0018] Further, the feeding device further comprises a pushing mechanism and a sensor, the pushing mechanism comprises a telescopic push rod, and the sensor is used to detect the nut blank accumulated on the side of the receiving area close to the guide surface, and the push rod is used to extend to push the nut blank abutting against the guide surface away from the conveying surface when the nut blank is accumulated on the side of the receiving area close to the guide surface.

[0019] Further, the extension direction of the conveying surface is consistent with the conveying direction of the conveying mechanism when the nut blank is conveyed, and the guide surface comprises an inclined surface extending from one side to the other side of the width direction of the conveying surface, and the inclined surface is used to guide the nut blank in the vertical position to deviate.

[0020] The technical scheme of the nut tapping equipment of the utility model is:

[0021] The utility model provides a nut tapping equipment, including feeding device and tapping device for nut tapping, feeding device includes conveying mechanism and adjusting position material blocking mechanism, conveying mechanism has the conveying surface for conveying nut blank to set feeding position and keeps each nut blank in the order arrangement on the conveying surface, adjusting position material blocking mechanism includes the material blocking piece corresponding with feeding position and is used for driving material blocking piece reciprocal motion drive arrangement, material blocking piece has the material blocking surface for with the side of nut blank and is kept in feeding position, when drive arrangement drives material blocking piece moves to the side of nut blank, material blocking piece applies the thrust of opposite direction with conveying direction to the nut blank and makes the nut blank move.

[0022] Beneficial effect: the utility model discloses on the basis of the feeding device of nut tapping equipment in prior art carries out the element change, and the material blocking piece is movably arranged, when the nut blank is conveyed to the feeding position along the limiting channel on the conveying surface, the nut blank is abutted with the material blocking surface of material blocking piece, at this time, the nut blank can be moved to the side of the nut blank by drive arrangement, and the thrust of opposite direction with the conveying direction is applied to the nut blank, so that the nut blank moves, which can adjust the attitude of the nut blank, and the nut blank cooperates with the material blocking surface again, if the nut blank is in the non-set feeding attitude of abutting the material blocking surface with the side before the material blocking piece pushes the nut blank, then after the material blocking piece pushes the nut blank, the nut blank is forced to move, and the nut blank is separated from the original stable non-set feeding attitude, and the frontmost nut blank is relatively easily realized the set feeding attitude of abutting the material blocking surface with the side under the action of the positive thrust of material blocking piece, the pushing force of conveying surface, the blocking force of material blocking surface and the extrusion force of rear nut blank, which is beneficial to the normal positioning operation of subsequent cooperation mechanical hand, can reduce manual intervention, and is convenient to use.

[0023] Further, the material blocking piece has a pushing position and a blocking position on its reciprocating stroke, the material blocking piece extends above the conveying surface to push the nut blank when moving to the pushing position, and the material blocking piece has a part on one side of the conveying direction of the conveying surface when moving to the blocking position to keep the nut blank in the feeding position.

[0024] Further, the drive device is located on the side of the material blocking piece away from the conveying surface and is used to drive the material blocking piece to move linearly back and forth, and the moving direction of the material blocking piece is consistent with the extension direction of the conveying mechanism.

[0025] Further, the drive device is a telescopic cylinder, and two or more telescopic rods are arranged on the piston of the telescopic cylinder, and the ends of the telescopic rods are fixed with the material blocking piece.

[0026] Further, the area of the material blocking surface is set to be greater than the area of the side of the nut blank.

[0027] Further, the driving device has a set action frequency for pushing the corresponding nut blank by the blocking member at each feeding.

[0028] Further, the conveying mechanism is provided with a receiving area corresponding to the nut blank feeding mechanism for the nut blank to fall on the conveying surface, the conveying surface is used to convey the nut blank from the receiving area to the set feeding position, the feeding device further comprises a fixedly arranged ejecting rack, the ejecting rack has an ejecting part located at one side of the receiving area along the conveying direction, the ejecting part is located above the conveying surface and forms a gap for the horizontally placed nut blank to pass through between the conveying surface, the gap is smaller than the height of the vertically placed nut blank, and the ejecting part has a guide surface located at the side of the receiving area, the guide surface is used to prevent the vertically placed nut blank and guide the vertically placed nut blank to deviate from the conveying surface to the side of the conveying mechanism.

[0029] Further, the feeding device further comprises a pushing mechanism and a sensor, the pushing mechanism comprises a retractable push rod, the sensor is used to detect the accumulation of the nut blank at the side of the receiving area close to the guide surface, and the push rod is used to extend to push the nut blank abutting against the guide surface away from the conveying surface when the accumulation of the nut blank occurs at the side of the receiving area close to the guide surface.

[0030] Further, the extension direction of the conveying surface is consistent with the conveying direction of the conveying mechanism when the nut blank is conveyed, and the guide surface comprises an inclined surface extending from one side to the other side of the width direction of the conveying surface, the inclined surface is used to guide the vertically placed nut blank to deviate. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structure schematic view of embodiment 1 of the feeding device of the nut tapping equipment.

[0032] Figure 2 It is a structure schematic view of embodiment 1 of the feeding device of the nut tapping equipment. Figure 1 It is a top view schematic view of the feeding device in the embodiment 1 of the nut tapping equipment when the blocking member is in the pushing position.

[0033] Figure 3 It is a top view schematic view of the feeding device in the embodiment 1 of the nut tapping equipment when the blocking member is in the blocking position. Figure 1 It is a top view schematic view of the feeding device in the embodiment 1 of the nut tapping equipment when the blocking member is in the blocking position.

[0034] Figure 4 It is a posture change schematic view of the arrangement process of each nut blank on the conveying surface of the feeding device in the embodiment 1 of the nut tapping equipment. Figure 1

[0035] It is a structure schematic view of embodiment 2 of the feeding device of the nut tapping equipment. Figure 5

[0036] It is a structure schematic view of embodiment 2 of the feeding device of the nut tapping equipment. Figure 6 Figure 5 It is a structure schematic view of embodiment 2 of the feeding device of the nut tapping equipment.​

[0037] Fig. 100, nut blank; 101, flat nut blank; 102, vertical nut blank;

[0038] 1, conveying mechanism; 10, conveying surface; 11, fixed base; 12, limiting plate; 21, material blocking piece; 22, driving device; 3, material ejecting frame; 30, guide surface; 4, material pushing mechanism; 41, push rod; 301, first inclined surface; 302, second inclined surface; 31, first plate body; 32, second plate body; 33, reinforcing plate; 34, fixed plate; 35, adjusting long hole. DETAILED DESCRIPTION

[0039] The basic concept of the feeding device of the nut tapping equipment is to apply impact force to the nut blank, so that the nut blank is forced to change the posture, so that the nut blank more easily realizes the set feeding posture of the side surface being attached to the material blocking surface, and manual intervention is reduced.

[0040] The technical scheme of the utility model will be specifically described below in combination with embodiments.

[0041] Embodiment 1 of the feeding device of the nut tapping equipment of the utility model:

[0042] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , the feeding device of the nut tapping equipment comprises a conveying mechanism 1, the conveying mechanism 1 has a conveying surface 10 for conveying the nut blank 100 to a set feeding position and a limiting passage for sequentially arranging each nut blank 100 on the conveying surface 10, the nut blank 100 moves along the limiting passage on the conveying surface 10, the conveying surface 10 moves with the nut blank 100 from one end of the conveying mechanism 1 to the other end, so that the nut blank 100 is in the feeding position, then the nut blank 100 in the feeding position can be gripped by a mechanical hand and transferred to a positioning clamp of a tapping device, and then tapping operation is performed by a tapping tool of the tapping device.

[0043] To ensure that the nut blank 100 is in a relatively stable state during the conveying process, the nut blank 100 is transferred in a flat state, that is, the central hole for forming a threaded hole of the nut blank 100 faces upward, one end surface of the nut blank 100 is supported on the conveying surface 10 for conveying, and, in order to orderly perform the feeding process, each nut blank 100 is sequentially arranged in a row and orderly arranged in a row on the conveying surface 10, only the nut blank 100 at the front of the conveying surface 10 is in the set feeding position each time, so as to be gripped by the mechanical hand.

[0044] The nut to be tapped is a hexagonal nut, which has edges and side surfaces, axial end surfaces and a threaded hole in the center. The corresponding nut blank 100 is hexagonal prism-shaped, has six side edges and six side surfaces, axial end surfaces and a light hole in the center. The end surfaces are prismatic bottom surfaces, and the light hole in the center is used to form a threaded hole. The axial dimension of the nut blank 100 is smaller than the distance between the opposite side surfaces. The positioning fixture of the tapping device is adapted to the shape of the nut blank 100. The prismatic nut blank 100 needs to be placed in the positioning fixture in a set posture to ensure that the side surfaces of the nut blank 100 are well fitted with the corresponding positioning surfaces of the positioning fixture. The gripper of the robot is inserted into the center light hole of the nut blank 100 and clamped in a tight manner. The posture of the nut blank 100 cannot be judged and adjusted. Therefore, in the embodiment, the posture adjusting and material blocking mechanism is provided to realize the set feeding posture of the nut blank 100 at the feeding position.

[0045] The posture adjusting and material blocking mechanism includes a material blocking piece 21 corresponding to the feeding position and a driving device 22 for driving the material blocking piece 21 to reciprocate. The material blocking piece 21 has a material blocking surface for abutting against the side surface of the nut blank 100 to keep it at the feeding position. The feeding position is determined by the blocking and limiting of the nut blank 100 by the material blocking piece 21. The material blocking piece 21 is arranged at the terminal end of the conveying mechanism 1. The material blocking surface of the material blocking piece 21 faces the nut blank 100. The material blocking surface is a vertical surface and corresponds to the conveying surface 10. When the nut blank 100 advances with the conveying surface 10 to abut against the material blocking surface, the nut blank 100 reaches the feeding position, so as to be taken away by the robot subsequently. When the nut blank 100 is blocked, it can be kept at the feeding position by sliding relative to the conveying surface 10.

[0046] The nut blanks 100 are arranged in a row. After the nut blank 100 at the frontmost position in the feeding position is taken away by the robot, the nut blank 100 immediately behind abuts against the material blocking surface under the driving of the conveying mechanism 1, and is re-fed. There are a large number of nut blanks 100 on the conveying surface 10. When the nut blank 100 at the frontmost position abuts against the material blocking surface of the material blocking piece 21, the nut blanks 100 behind can abut against the nut blanks 100 in front one by one, slide relative to the conveying surface 10, and wait for feeding.

[0047] When the nut blank 100 is in the feeding position and in the set feeding posture, the side surface of the nut blank 100 is in abutment with the blocking surface of the blocking piece 21. Since the nut blanks 100 falling on the conveying surface 10 from the starting end of the conveying mechanism 1 are not regularly arranged, there is a situation that the side surfaces of two adjacent nut blanks 100 are not aligned or the side edges abut against the side surface. When the nut blank 100 abuts against the blocking surface, there is a small probability that the side edge directly abuts against the blocking surface and the side surface has a large angle with the blocking surface and cannot be automatically aligned, so that the nut blank 100 can be kept in the state that the side edge abuts against the blocking surface, which is inconsistent with the set feeding state that the side surface abuts against the blocking surface. Therefore, the blocking piece 21 is arranged to be movable, and when the driving device 22 drives the blocking piece 21 to move towards the side where the nut blank 100 is located, the blocking piece 21 applies a pushing force to the nut blank 100 abutting against the blocking piece 21 in the direction opposite to the conveying direction to move the nut blank 100. The blocking piece 21 is driven by the driving device 22 to move to push the nut blank 100, so that the posture of the nut blank 100 is changed and the nut blank 100 is more easily in the set feeding posture.

[0048] When the nut blank 100 is conveyed on the conveying surface 10 along the limiting channel to the feeding position, the nut blank 100 abuts against the blocking surface of the blocking piece 21, at this time, the driving device 22 can drive the blocking piece 21 to move towards the side where the nut blank 100 is located to apply a pushing force to the nut blank 100 in the direction opposite to the conveying direction to move the nut blank 100, so that the posture of the nut blank 100 is adjusted to make the nut blank 100 cooperate with the blocking surface again. If the nut blank 100 is in the non-set feeding posture that the side edge abuts against the blocking surface before the blocking piece 21 pushes the nut blank 100, after the blocking piece 21 pushes the nut blank 100, the nut blank 100 has an impact force, so that the nut blank 100 is forced to move to be separated from the originally stable non-set feeding posture, and at the same time, the nut blank 100 is adjusted in posture by the pushing force of the blocking piece 21, the pushing force of the conveying surface 10, the blocking force of the blocking surface and the extrusion force of the nut blank 100 behind, so that the nut blank 100 at the front abutting against the blocking surface is more easily in the set feeding posture that the side surface abuts against the blocking surface, which is beneficial to the normal positioning operation of the subsequent cooperating manipulator, can reduce manual intervention and is convenient to use.

[0049] The conveying mechanism 1 can adopt a chain plate conveyor or a belt conveyor, the surface of the chain plate or the belt for supporting the nut blank 100 constitutes the conveying surface 10, and the conveying mechanism 1 in the embodiment adopts a chain plate conveyor. The conveying mechanism 1 is horizontally arranged, the length direction of the conveying mechanism 1 is defined as the front-rear direction, the front-rear direction is also the conveying direction of the nut blank 100, and the nut blank 100 is conveyed from back to front, the width direction of the conveying mechanism 1 is defined as the left-right direction, and the height direction is defined as the up-down direction.

[0050] The conveying mechanism 1 comprises a fixed base 11 and conveying chain plates that can move circularly in the front-rear direction, the upper surface of the conveying chain plates is used to form a conveying surface 10, the front end of the fixed base 11 is provided with a fixed seat, and a driving device 22 is fixedly installed on the fixed seat and located at the front side of the conveying surface 10. The fixed base 11 comprises fixed edges respectively arranged on the left and right sides of the conveying chain plates, and the edges on both sides of the conveying surface 10 of the conveying mechanism 1 are each provided with a limiting plate 12, the edges on both sides of the conveying surface 10 of the fixed base 11 are each fixed with a limiting plate 12, and the edges on both sides of the conveying surface 10 of the fixed base 11 and the limiting plates 12 fixed thereon jointly form the fixed edges of the conveying mechanism 1, the limiting plate 12 is an L-shaped bent plate having a horizontal edge and a vertical edge, the horizontal edge of the limiting plate 12 is fixed on the fixed base 11, the height of the vertical edge is adapted to the height of the flat nut blank 101, and the vertical edges of the limiting plates 12 on the left and right sides form a limiting channel for limiting the nut blank 100, which just allows the nut blanks 100 to pass through in an orderly arrangement. The material blocking surface of the material blocking piece 21 is adjacent to the edge of the conveying surface 10, when the nut blank 100 is in the feeding position, that is, at the end of the conveying mechanism 1, the nut blank 100 is also on the conveying surface 10 and is limited by the limiting plates 12 on the left and right sides, accordingly, the distance between the limiting plates 12 on the left and right sides of the conveying surface 10 is slightly greater than the distance between the two farthest side edges of the nut blank 100, so that each nut blank 100 can be arranged in the limiting channel with the side surfaces in close contact.

[0051] The material blocking piece 21 has a pushing position and a blocking position in its reciprocating stroke, when the material blocking piece 21 moves to the pushing position, it extends above the conveying surface 10 to push the nut blank 100, when the material blocking piece 21 moves to the blocking position, it is completely located on one side of the conveying direction of the conveying surface 10 to keep the nut blank 100 in the feeding position, so as to fully utilize the front-rear length of the conveying surface 10 to form a conveying path. In other embodiments, the material blocking piece can also be moved to the pushing position or the blocking position to be completely above the conveying surface.

[0052] The driving device 22 is located on the side of the material blocking piece 21 away from the conveying surface 10 and is used to drive the material blocking piece 21 to move linearly back and forth, the movement direction of the material blocking piece 21 is consistent with the extension direction of the conveying mechanism 1, both are in the front-rear direction, and the structure is simple. In other embodiments, the driving device can also be arranged on the left side or the right side of the conveying surface, which can drive the material blocking piece to move linearly.

[0053] In this embodiment, the driving device 22 is a telescopic cylinder, which is a double-rod cylinder. The cylinder can have a relatively fast telescopic speed. The piston of the cylinder is provided with two telescopic rods. The ends of the two telescopic rods are fixed to the material blocking piece 21, and the force is uniformly applied. In other embodiments, the driving device 22 can also be a hydraulic cylinder or an electric push rod. In other embodiments, the telescopic rod of the driving device can also be only one or three.

[0054] The driving device 22 has a set action frequency for pushing the corresponding nut blank 100 through the material blocking piece 21 at each time of feeding. Each time of pushing can push a row of nut blanks 100. In this way, the nut blanks 100 behind the nut blanks 100 in the feeding position are subjected to more than once of the posture adjustment action. The number of times of the posture adjustment action of the nut blanks 100 can be increased, which is beneficial to arranging the nut blanks 100 in a row in the posture of the side surfaces being in contact with each other. Of course, in other embodiments, the nut blanks in the feeding position can also be detected by a visual sensor to determine whether the nut blanks are in the set feeding posture. Only when it is detected that the nut blanks are not in the set feeding posture, the nut blanks are pushed to move.

[0055] The material blocking piece 21 is a square block. The front side surface of the material blocking piece 21 is fixedly connected to the telescopic rod, and the rear side surface constitutes a material blocking surface. The area of the material blocking surface is set to be greater than the area of a single side surface of the nut blank 100, so as to facilitate the stable abutment of the nut blank 100. In other embodiments, the area of the material blocking surface is set to be slightly smaller than the area of a single side surface of the nut blank.

[0056] The two limiting plates 12 are different in length. The rear ends of the two limiting plates 12 are staggered forward and backward, forming an opening for receiving materials which is open to one side in the left-right direction. The rear end of the longer limiting plate 12 is provided with a blocking structure to prevent the nut blank 100 from falling backward.

[0057] In use, the driving device 22 cooperates with the material blocking piece 21 to instantaneously push away the nut blanks 100 accumulated at the front end of the conveying surface 10, and push the nut blanks backward to impact the nut blanks, so that the nut blanks move backward, i.e., in the direction opposite to the operation of the conveying mechanism 1. Under the action of inertia, the plurality of nut blanks 100 are separated. The nut blanks 100 with a spacing are again conveyed by the conveying mechanism 1 in the operation direction, so that the plurality of nut blanks 100 are close to each other. The frontmost nut blank 100 first abuts against the material blocking piece 21, and the nut blanks 100 behind the frontmost nut blank 100 abut against each other in turn. Under the cooperation of the pushing force provided by the conveying mechanism 1 and the abutting force of the material blocking piece 21, the side surfaces of the plurality of nut blanks 100 abut against each other. The continuous pushing makes the adjacent nut blanks 100 gradually rotate and completely abut against each other. Figure 4As shown, the original arrangement posture of the nut blank 100 is changed after being pushed by the impact, and the side surface of the nut blank 100 is in close contact or small angle abutment with high probability, so that the ideal state of the side surface of the nut blank 100 abutting against the material blocking surface and the side surface of the nut blank 100 is finally formed through the pushing force. The posture of the nut blank 100 is automatically adjusted, the nut blank is arranged, and the non-set feeding posture is not easy to appear, thereby facilitating the clamping of the mechanical hand.

[0058] Embodiment 2 of the feeding device of the nut tapping equipment

[0059] The feeding process of the embodiment is basically the same as that of the above-mentioned embodiment 1, and the difference lies in that a material removing frame and a material pushing mechanism are added to remove the vertically placed nut blanks and retain the horizontally placed nut blanks.

[0060] The feeding device of the nut tapping equipment comprises a hopper, a feeding mechanism and a conveying mechanism, and the conveying mechanism is the same as that in the above-mentioned embodiment 1. A plurality of nut blanks are stacked in the hopper, the nut blanks are transferred to the conveying mechanism through the feeding mechanism, and the nut blanks fall on the conveying surface of the conveying mechanism after leaving the feeding mechanism. The conveying mechanism is provided with a material receiving area corresponding to the feeding mechanism for the nut blanks to fall on the conveying surface. The conveying surface is used to convey the nut blanks from the material receiving area to the set feeding position.

[0061] The hopper is located on the ground, the conveying mechanism is higher than the hopper, the feeding mechanism can take out the nut blanks in the hopper and lift the nut blanks to the material receiving area of the conveying mechanism. The feeding mechanism is not shown in the figure, and the feeding mechanism for lifting the nut blanks belongs to the known technology. Generally, a chain plate type elevator is used. One end of the chain plate type elevator extends into the hopper, and the other end extends to the material receiving area of the conveying mechanism. A plurality of baffles are arranged on the chain plate of the feeding mechanism in the lifting direction. With the operation of the chain plate, each baffle can lift and take the nut blanks in turn for lifting. The nut blanks are sent to the material receiving area of the conveying mechanism and fall from the chain plate of the feeding mechanism and fall on the conveying surface of the conveying mechanism. With the operation of the conveying mechanism, the conveying surface carries the nut blanks forward.

[0062] The hopper is located on the left side of the conveying mechanism and corresponds to the rear end of the conveying mechanism. The part close to the rear end of the conveying mechanism is provided with a material receiving area. The material receiving area is a region of the conveying mechanism corresponding to the feeding mechanism to receive the falling nut blank material. The nut blanks move from the material receiving area to the set position at the front end of the conveying mechanism.

[0063] The nut blanks freely falling on the conveying surface include flatly placed nut blanks and vertically placed nut blanks, the flatly placed nut blanks are supported on the conveying surface by end faces, the vertically placed nut blanks are supported on the conveying surface by side faces, and the height of the vertically placed nut blanks is greater than the height of the flatly placed nut blanks. The feeding device needs to orderly arrange the nut blanks in a flat state.

[0064] In order to avoid the vertically placed nut blanks affecting the feeding operation, as shown in Figure 5 、 Figure 6 The feeding device further includes a fixedly arranged ejecting frame 3, the ejecting frame 3 has an ejecting part on the side of the receiving area along the conveying direction, the ejecting part is located above the conveying surface 10 and forms a gap with the conveying surface 10, the gap is slightly greater than the height of the flatly placed nut blanks 101 and less than the height of the vertically placed nut blanks 102, the ejecting part has a guide surface on the side of the receiving area, the guide surface is a vertical surface and is obliquely arranged above the conveying surface 10, the guide surface is used to prevent the vertically placed nut blanks 102 and guide the vertically placed nut blanks 102 to deviate to the side of the conveying mechanism and leave the conveying surface 10. The conveying direction is from back to front, the guide surface is located in front of the receiving area, the guide surface faces the vertically placed nut blanks 102, the vertically placed nut blanks 102 are relatively high, the guide surface blocks the vertically placed nut blanks 102 above the conveying surface 10 of the conveying mechanism, and the normal flatly placed nut blanks 101 can pass through the gap between the ejecting part and the conveying surface 10 and continue to move forward, after the vertically placed nut blanks 102 abut against the guide surface, the vertically placed nut blanks 102 cannot be made to fall into the flat state only by blocking due to the relatively large supporting area when vertically placed, and thus, under the action of the conveying force, the vertically placed nut blanks 102 deviate to one side of the conveying mechanism in the left-right direction by the guiding action of the guide surface, and then leave the conveying surface 10, thereby realizing the automatic ejecting effect of the vertically placed nut blanks 102, and avoiding the problem of high labor intensity caused by frequent manual intervention and adjustment of the nut blanks, and reducing the labor intensity of workers.

[0065] The guide surface is a vertical surface, the guide surface includes an inclined surface extending from one side to the other side in the width direction of the conveying surface 10, the inclined surface is used to guide the vertically placed nut blanks 102 to deviate, and the guide surface spans the left and right sides of the conveying surface 10 in the left-right direction, the left edge of the inclined surface is in front and the right edge of the inclined surface is behind, so that the vertically placed nut blanks 102 can be guided to deviate to the left and leave the conveying surface 10. In other embodiments, the guide surface can also be a concave arc surface, the left and right edges of the guide surface are arranged in front and behind, and the vertically placed nut blanks can be guided to deviate to one side.

[0066] The position corresponding to the position of the vertically placed nut blank 102 leaving the conveying surface 10 of the conveying mechanism is provided with a ejection area, which is a section of area located behind the guide surface and in front of the receiving area. The feeding device further comprises a return chute corresponding to the ejection area, which is arranged side by side with the feeding mechanism in front and behind, both located on the left side of the conveying mechanism, and the lower end of each extends into the hopper, and the upper end of each extends into the conveying mechanism. Under the guidance of the guide surface, the vertically placed nut blank 102 leaves the conveying surface 10 and deviates to the return chute, falls along the return chute and returns to the hopper, so as to facilitate re-feeding.

[0067] In order to avoid congestion and stagnation at the guide surface, the feeding device further comprises a pushing mechanism 4 and a sensor, the pushing mechanism 4 comprises a telescopic push rod 41, and the sensor is used to detect the accumulation of nut blanks on the side of the guide surface close to the receiving area. The push rod 41 is used to extend to push the nut blanks abutting against the guide surface away from the conveying surface 10 when the nut blanks accumulate on the side of the guide surface close to the receiving area, so as to prevent the nut blanks on one side of the guide surface from accumulating in large quantities due to not falling in time, and to ensure reliable use. In other embodiments, the pushing mechanism and the sensor can also be omitted as needed.

[0068] The pushing mechanism 4 is fixed on the fixed edge of the conveying mechanism located on the right side of the conveying surface 10, the sensor is fixed on the fixed edge of the conveying mechanism located on the left side of the conveying surface 10, and the pushing mechanism 4 is located on the right side of the ejection part where the guide surface is located. In this embodiment, the pushing mechanism 4 adopts a pneumatic cylinder, the piston rod of the pneumatic cylinder and the lengthened rod fixed at the end of the piston rod jointly constitute the push rod 41, which can be telescopic. When extended, it can extend from below the ejection part where the guide surface is located to the rear of the guide surface, and push the vertically placed nut blank 102 adjacent to the rear of the guide surface away from the conveying surface 10. When retracted, it opens the channel to allow the flat placed nut blank 101 to be normally conveyed. The sensor can adopt a laser sensor or a vision sensor, which can sense the accumulation and stagnation of nut blanks behind the guide surface, thereby sending a signal to the control system, and then controlling the pushing mechanism 4 to act, actively pushing the corresponding vertically placed nut blank 102 away, and pushing it onto the return chute. The right side limiting plate 12 is provided with an avoidance gap corresponding to the position of the push rod 41, so as to facilitate the push rod 41 to extend above the conveying surface 10 to push away the blocked nut blanks.

[0069] The reject frame 3 comprises a first plate body 31, a second plate body 32, a reinforcing plate 33 and a fixing plate 34. The first plate body 31 and the second plate body 32 are arranged at an angle and connected to each other. The first plate body 31 and the second plate body 32 are both perpendicular to the conveying surface 10. The first plate body 31 and the second plate body 32 are both arranged to be inclined relative to the conveying direction. The angle between the inclined direction of the first plate body 31 and the conveying direction is smaller than the angle between the inclined direction of the second plate body 32 and the conveying direction. The front end of the first plate body 31 has a portion extending directly above the conveying surface 10. The second plate body 32 is located above the conveying surface 10 and connected to the front end of the first plate body 31. The portion of the first plate body 31 protruding forward of the second plate body 32 is fixed with the reinforcing plate 33 between the first plate body 31 and the second plate body 32. The middle part of the first plate body 31 is connected with the fixing plate 34. The fixing plate 34 is horizontally arranged and fixed on the horizontal edge of the right limiting plate 12. The portion of the first plate body 31 connected to the second plate body 32 and located directly above the conveying surface 10 and the first plate body 31 together form the rejecting part of the reject frame 3. The rear side of the first plate body 31 and the left side of the portion of the first plate body 31 connected to the second plate body 32 and located directly above the conveying surface 10 together form a guide surface. The guide surface has two inclined surfaces, i.e. a first inclined surface 301 located on the first plate body 31 and a second inclined surface 302 located on the second plate body 32. The inclined angles of the two inclined surfaces relative to the conveying direction gradually increase. The first inclined surface 301 and the second inclined surface 302 are both inclined towards the left rear side, but have different inclined angles. Spaces for avoiding the push rod 41 of the pushing mechanism 4 are provided between the first inclined surface 301 and the second inclined surface 302 and the right limiting plate 12.

[0070] When the nut blank is conveyed, the standing nut blank 102 is first guided by the first inclined surface 301 to the second inclined surface 302 and then guided to leave the conveying mechanism by the second inclined surface 302. The lying nut blank 101 is conveyed to the front and arranged by the driving device 22 cooperating with the blocking member 21.

[0071] The reject frame 3 is adjustably installed on the right fixed edge of the conveying mechanism. By changing the position of the reject frame 3, the orientation angle of the guide surface can be changed, which is convenient for adjusting the inclined angle of the inclined surface. Two adjusting long holes 35 are provided on the fixing plate 34. Corresponding two adjusting cooperation long holes are provided on the limiting plate 12. The adjusting long holes 35 and the adjusting cooperation long holes are cross arranged. Bolts can be passed through the cross to realize fixation. When the bolts are loosened, the reject frame 3 can be rotated to change the position relative to the conveying mechanism. The bolt fixing position can be changed accordingly to realize adjustable installation.

[0072] The left and right side limiting plates 12 are staggered in the conveying direction of the conveying mechanism and form a receiving area and a rejecting area at the staggered position, that is, corresponding to the feeding opening, the rear end of the left side limiting plate is relatively closer to the front, and the rear end of the right side limiting plate is relatively closer to the rear, so that the left side limiting plate avoids the feeding mechanism, the receiving area is located at the rear of the left side limiting plate, and the left side limiting plate is located in front of the rejecting area. The feeding mechanism is used for transferring the nut blank in the hopper to the receiving area and dropping onto the conveying surface. The right side limiting plate can constrain the nut blank to avoid the nut blank from sliding to the right.

[0073] The embodiment of the nut tapping equipment of the utility model:

[0074] The nut tapping equipment comprises a feeding device and a tapping device for tapping the nut, the feeding device herein is the same as the feeding device in any embodiment of the feeding device of the nut tapping equipment described above, and details are not repeated herein.

[0075] Finally, it needs to be pointed out that the above-mentioned is only the preferred embodiment of the utility model, and is not used for limiting the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing embodiments without paying creative labor, or equivalent replacement is carried out to part of the technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A feeding device for a nut tapping machine, characterized in that, The device includes a conveying mechanism and an adjusting stop mechanism. The conveying mechanism has a conveying surface for conveying nut blanks to a set loading position and a limiting channel for maintaining the sequential arrangement of each nut blank on the conveying surface. The adjusting stop mechanism includes a stop component corresponding to the loading position and a drive device for driving the stop component to reciprocate. The stop component has a stop surface for abutting against the side of the nut blank to hold it in the loading position. When the drive device drives the stop component to move toward the side where the nut blank is located, the stop component applies a thrust in the opposite direction to the conveying direction to the nut blank it abuts, so that the nut blank moves.

2. The feeding device of the nut tapping equipment according to claim 1, characterized in that, The material stop has a pushing position and a stopping position during its reciprocating stroke. When the material stop moves to the pushing position, it extends above the conveying surface to push the nut blank. When the material stop moves to the stopping position, it has a part on the conveying direction side of the conveying surface and is used to hold the nut blank in the feeding position.

3. The feeding device of the nut tapping equipment according to claim 1 or 2, characterized in that, The drive unit is located on the side of the stop component away from the conveying surface and is used to drive the stop component to reciprocate linearly. The direction of movement of the stop component is consistent with the extension direction of the conveying mechanism.

4. The feeding device of the nut tapping equipment according to claim 3, characterized in that, The driving device is a telescopic cylinder, and the piston of the telescopic cylinder is equipped with two or more telescopic rods, the end of each telescopic rod being fixed to the stop.

5. The feeding device of the nut tapping equipment according to claim 1 or 2, characterized in that, The area of ​​the stop surface is set to be larger than the area of ​​the side surface of the nut blank.

6. The feeding device of the nut tapping equipment according to claim 1 or 2, characterized in that, The drive unit has a set operating frequency to push the corresponding nut blank through the stop member each time it is loaded.

7. The feeding device of the nut tapping equipment according to claim 1 or 2, characterized in that, The conveying mechanism is provided with a receiving area corresponding to the nut blank feeding mechanism so that the nut blank can fall onto the conveying surface. The conveying surface is used to convey the nut blank from the receiving area to a set feeding position. The feeding device also includes a fixedly installed rejection frame. The rejection frame has a rejection part located on the side of the receiving area along the conveying direction. The rejection part is located above the conveying surface and forms a gap between it and the conveying surface for the flat nut blank to pass through. This gap is smaller than the height of the nut blank when it is placed upright. The rejection part has a guide surface on the side where the receiving area is located. The guide surface is used to prevent the upright nut blank and guide the upright nut blank to shift to the side of the conveying mechanism and leave the conveying surface.

8. The feeding device of the nut tapping equipment according to claim 7, characterized in that, The feeding device also includes a pushing mechanism and a sensor. The pushing mechanism includes a telescopic push rod. The sensor is used to detect the nut blanks piled up on the side of the guide surface near the receiving area. The push rod is used to extend when nut blanks pile up on the side of the guide surface near the receiving area to push the nut blanks that are in contact with the guide surface away from the conveying surface.

9. The feeding device of the nut tapping equipment according to claim 7, characterized in that, The extension direction of the conveying surface is consistent with the conveying direction when the conveying mechanism conveys the nut blank. The guiding surface includes an inclined surface that extends from one side to the other in the width direction of the conveying surface. The inclined surface is used to guide the offset of the upright nut blank.

10. A nut tapping device, comprising a feeding device and a tapping device for tapping nuts, characterized in that, The feeding device is the feeding device of the nut tapping equipment described in any one of claims 1-9.

Images