Nut tapping equipment and feeding device thereof

Abstract

The utility model relates to the technical field of thread 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 with a conveying face, the conveying mechanism is provided with a material receiving area allowing nut blanks to fall on the conveying face, the feeding device further comprises a fixedly-arranged material removing frame, and the material removing frame is provided with a material removing part located on the side, in the conveying direction, of the material receiving area. The material removing part is located above the conveying face, a gap allowing the horizontally-placed nut blanks to pass through is formed between the material removing part and the conveying face, the material removing part is provided with a guiding face located on the side where the material receiving area is located, and the guiding face is used for preventing the vertically-placed nut blanks and guiding the vertically-placed nut blanks to deviate towards one side of the conveying mechanism to leave the conveying face. The automatic removing effect of the vertically-placed nut blanks is achieved, the problem that labor intensity is large due to frequent manual intervention and adjustment of the nut blanks can be avoided, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of thread processing equipment, specifically to a nut tapping device and its feeding device. Background Technology

[0002] Currently, the mass production of threaded nuts generally employs automated nut tapping equipment. The nut blank is conveyed to a designated position via a feeding device, then transferred to a positioning fixture for fixation. Finally, a tapping tool processes the threads on the nut blank. The feeding device typically uses a belt-type or chain-plate type horizontal conveyor to transport the nuts. For example, Chinese utility model patent CN220372393U discloses a nut loading and unloading device for a tapping machine. This device includes a conveying mechanism, a loading platform, a transferring mechanism, and a pushing mechanism. The conveying mechanism transports the nuts to be tapped; the loading platform has processing bays adapted to the nuts to be tapped; the transferring mechanism includes a transferring component and a driving mechanism. The transferring component is slidably mounted on the loading platform and has a sealing section and a transferring section. The transferring section has a transferring groove, the bottom surface of which is on the same horizontal plane as the conveying surface of the conveying mechanism. The surface is used to support and move the nut. The transfer groove is used to accommodate a nut to be tapped. The drive mechanism is used to drive the transfer component to reciprocate between the first position and the second position relative to the loading table. When the transfer component is in the first position, the transfer groove is connected to the discharge end of the conveying mechanism, and the nut on the conveying mechanism can enter the transfer groove. When the transfer component moves to the second position, the transfer groove is connected to the processing chamber, and the blocking section blocks the discharge end of the conveying mechanism. The foremost nut to be processed on the conveying mechanism abuts against the blocking section. The pushing mechanism pushes the nut to be tapped in the transfer groove of the transfer component into the processing chamber, so that the tapping head of the tapping machine can be used for subsequent tapping operations.

[0003] Generally, piles of nut blanks are stacked in the silo. To improve the automation of feeding and reduce the labor intensity of workers, a hoist is currently used to lift the nut blanks located in the ground silo onto the conveying mechanism. The hoist is a feeding mechanism used to transfer the nut blanks from the silo to the conveying mechanism. The hoist is located on one side of the starting end of the receiving area of ​​the conveying mechanism. The hoist carries the nut blanks up, so that the nut blanks fall one by one from the receiving area of ​​the conveying mechanism onto the conveying surface. Then, as the conveying surface moves forward to the position where feeding is required, in order to facilitate subsequent tapping operations with tapping tools, the nut blanks are usually transferred in a flat state, that is, the center hole of the nut blank for forming the threaded hole faces upward, and one end face of the nut blank is supported on the conveying surface for conveying. Each nut blank needs to be arranged flat in sequence on the conveying path.

[0004] Nuts are typically prismatic hexagonal nuts with edges and sides. Correspondingly, the nut blanks are prismatic. Therefore, during the feeding process, after the nut blanks fall from the end of the elevator onto the conveyor surface of the conveying mechanism, most are laid flat, but some are placed upright. In upright cases, one side of the nut blank is supported on the conveyor surface, rather than the end face. The height of the upright nut blank is greater than its flat height. The posture of the upright nut blank does not meet the subsequent flat clamping requirements. Currently, this is adjusted manually by workers who manually adjust the upright nut blanks to a flat position, but this increases the workers' workload. Utility Model Content

[0005] 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 current feeding device for nut tapping machines requires manual intervention to adjust the vertically placed nut blank, which makes the labor intensity of workers high; the purpose of this utility model is also to provide a nut tapping machine to solve the above problems.

[0006] The technical solution of the feeding device of the nut tapping equipment of this utility model is as follows:

[0007] A feeding device for a nut tapping machine includes a conveying mechanism with a conveying surface. The conveying mechanism has a receiving area corresponding to a 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 one 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 a flat nut blank to pass through. The 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 towards the conveying mechanism and leave the conveying surface.

[0008] Beneficial effects: This utility model improves upon the feeding device of existing nut tapping equipment by setting up a rejection rack. The rejection rack's rejection section blocks the upright nut blank above the conveying surface of the conveying mechanism, preventing the upright nut blank from passing through. Normally flat nut blanks can pass through the gap between the rejection section and the conveying surface. After the upright nut blank comes into contact with the rejection section, the guide surface guides the upright nut blank to shift to one side of the conveying mechanism, thus leaving the conveying surface. This achieves the automatic rejection effect of the upright nut blank, avoiding the problem of high labor intensity caused by frequent manual intervention to adjust the nut blank, and reducing the labor intensity of workers.

[0009] Furthermore, the extension direction of the conveying surface is consistent with the conveying direction when the conveying mechanism conveys the nut blank, and 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.

[0010] Furthermore, the inclined plane has two or more sections, and the inclination angle of each section relative to the conveying direction gradually increases.

[0011] Furthermore, 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.

[0012] Furthermore, the conveying mechanism is provided with a rejection zone for the position where the nut blank leaves the conveying surface, and the feeding device also includes a return slide corresponding to the rejection zone, which allows the nut blank leaving the conveying surface to return to the hopper.

[0013] Furthermore, the conveying mechanism includes a conveyor belt or a conveyor chain plate, the upper surface of which constitutes the conveying surface, and fixed edges are provided on both sides of the conveyor belt or conveyor chain plate, with the material rejection frame fixed on the fixed edges.

[0014] Furthermore, the rejection rack is mounted on the fixed edge in an adjustable position so that the orientation angle of the guide surface can be changed by changing the position of the rejection rack.

[0015] Furthermore, the rejection rack includes a fixed part located on one side edge of the conveying surface and fixed to the conveying mechanism, and an extension part extending from the fixed part to the other side of the conveying surface, the extension part constituting the rejection part.

[0016] Furthermore, the conveying mechanism is equipped with limiting plates on both sides of the conveying surface, and the limiting plates on both sides are staggered in the conveying direction of the conveying mechanism and form a receiving area at the staggered point. The feeding mechanism is used to transfer the nut blank in the hopper to the receiving area and drop it onto the conveying surface.

[0017] The technical solution of this utility model's nut tapping device is:

[0018] A nut tapping device includes a feeding device and a tapping device for tapping nut blanks. The feeding device includes a conveying mechanism with a conveying surface. The conveying mechanism has 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 one 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. The 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 towards the conveying mechanism and leave the conveying surface.

[0019] Beneficial effects: This utility model improves upon the feeding device of existing nut tapping equipment by setting up a rejection rack. The rejection rack's rejection section blocks the upright nut blank above the conveying surface of the conveying mechanism, preventing the upright nut blank from passing through. Normally flat nut blanks can pass through the gap between the rejection section and the conveying surface. After the upright nut blank comes into contact with the rejection section, the guide surface guides the upright nut blank to shift to one side of the conveying mechanism, thus leaving the conveying surface. This achieves the automatic rejection effect of the upright nut blank, avoiding the problem of high labor intensity caused by frequent manual intervention to adjust the nut blank, and reducing the labor intensity of workers.

[0020] Furthermore, the extension direction of the conveying surface is consistent with the conveying direction when the conveying mechanism conveys the nut blank, and 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.

[0021] Furthermore, the inclined plane has two or more sections, and the inclination angle of each section relative to the conveying direction gradually increases.

[0022] Furthermore, 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.

[0023] Furthermore, the conveying mechanism is provided with a rejection zone for the position where the nut blank leaves the conveying surface, and the feeding device also includes a return slide corresponding to the rejection zone, which allows the nut blank leaving the conveying surface to return to the hopper.

[0024] Furthermore, the conveying mechanism includes a conveyor belt or a conveyor chain plate, the upper surface of which constitutes the conveying surface, and fixed edges are provided on both sides of the conveyor belt or conveyor chain plate, with the material rejection frame fixed on the fixed edges.

[0025] Furthermore, the rejection rack is mounted on the fixed edge in an adjustable position so that the orientation angle of the guide surface can be changed by changing the position of the rejection rack.

[0026] Furthermore, the rejection rack includes a fixed part located on one side edge of the conveying surface and fixed to the conveying mechanism, and an extension part extending from the fixed part to the other side of the conveying surface, the extension part constituting the rejection part.

[0027] Furthermore, the conveying mechanism is equipped with limiting plates on both sides of the conveying surface, and the limiting plates on both sides are staggered in the conveying direction of the conveying mechanism and form a receiving area at the staggered point. The feeding mechanism is used to transfer the nut blank in the hopper to the receiving area and drop it onto the conveying surface. Attached Figure Description

[0028] Figure 1 This is a perspective view of Embodiment 1 of the feeding device of the nut tapping equipment of this utility model;

[0029] Figure 2 This is a top view schematic diagram of Embodiment 1 of the feeding device of the nut tapping equipment of this utility model;

[0030] Figure 3 This is a top view schematic diagram of Embodiment 2 of the feeding device of the nut tapping equipment of this utility model;

[0031] Figure 4 for Figure 3 A top view of the material rejection rack in the middle;

[0032] Figure 5 This is a top view schematic diagram of embodiment 3 of the feeding device of the nut tapping equipment of this utility model.

[0033] In the diagram: 101, flat nut blank; 102, vertical nut blank; 200, material transfer mechanism; 300, tapping device;

[0034] 1. Hopper; 2. Conveying mechanism; 21. Fixed base; 22. Limiting plate; 3. Rejection rack; 30. Guide surface; 4. Return chute; 5. Pushing mechanism; 51. Push rod; 6. Sensor; 301. First inclined plane; 302. Second inclined plane; 31. First plate; 32. Second plate; 33. Reinforcing plate; 34. Fixed plate; 35. Adjusting elongated hole. Detailed Implementation

[0035] The basic concept of the feeding device of the nut tapping equipment of this utility model is to block the upright nut blank by setting a scraping part above the conveying surface of the conveying mechanism. The normally flat nut blank can pass through the gap between the scraping part and the conveying surface. After the upright nut blank abuts against the scraping part, it is guided by the guiding surface to shift to one side of the conveying mechanism and leave the conveying surface, thereby realizing the automatic scraping effect of the upright nut blank.

[0036] The present invention will be described in detail below with reference to specific embodiments.

[0037] Example 1 of the feeding device of the nut tapping equipment of this utility model:

[0038] like Figure 1 , Figure 2 As shown, the feeding device of the nut tapping equipment includes a hopper 1, a feeding mechanism, and a conveying mechanism 2. The hopper 1 contains a large number of nut blanks. The nut blanks are transferred to the conveying mechanism 2 by the feeding mechanism. The conveying mechanism 2 has a conveying surface. After the nut blanks leave the feeding mechanism, they fall onto the conveying surface of the conveying mechanism 2. The conveying mechanism 2 is provided with a receiving area corresponding to the feeding mechanism so that the nut blanks can fall onto the conveying surface. The conveying surface is used to transport the nut blanks from the receiving area to a set feeding position so that the nut blanks can be transferred to the corresponding processing position by the material transfer mechanism 200, and then tapped by the tapping device 300.

[0039] The hopper 1 is located on the ground, and the conveying mechanism 2 is higher than the hopper 1. The feeding mechanism can take out the nut blanks from the hopper 1 and lift them to the receiving area of ​​the conveying mechanism 2. The feeding mechanism is not shown in the figure. The feeding mechanism used to lift the nut blanks is a known technology and is generally a chain plate elevator. One end of the chain plate elevator extends into the hopper 1 and the other end extends to the receiving area of ​​the conveying mechanism 2. The chain plate of the feeding mechanism is provided with many baffles along the lifting direction. As the chain plate rotates, each baffle can lift the nut blank in sequence. The nut blank is sent to the receiving area of ​​the conveying mechanism 2, falls off the chain plate of the feeding mechanism, and lands on the conveying surface of the conveying mechanism 2. As the conveying mechanism 2 runs, it is carried forward by the conveying surface.

[0040] The conveying mechanism 2 can be a chain conveyor or a belt conveyor. The belt forms the conveyor belt, and the surface of the chain plate or belt used to support the nut blank forms the conveying surface. In this embodiment, the conveying mechanism 2 uses a chain conveyor. The conveying mechanism is arranged horizontally, with the length direction of the conveying mechanism as the front-to-back direction, which is also the conveying direction of the nut blank. The nut blank is defined as being conveyed from back to front. The width direction of the conveying mechanism is the left-to-right direction, and the height direction is the up-to-down direction. The hopper 1 is located on the left side of the conveying mechanism 2 and corresponds to the rear end of the conveying mechanism. A receiving area is set near the rear end of the conveying mechanism. The receiving area is the area where the corresponding feeding mechanism of the conveying mechanism 2 receives the fallen nut blank material. The nut blank moves forward from the receiving area to a set position at the front end of the conveying mechanism.

[0041] The machined nuts are prismatic, specifically hexagonal nuts, with threaded holes at the corners, sides, axial end faces, and center. Correspondingly, the nut blanks are prismatic, specifically hexagonal prisms, with smooth holes at the corners, sides, axial end faces, and center. The axial dimension of the nut blank is smaller than the distance between its two opposite sides. Nut blanks falling freely onto the conveyor surface can be either laid flat or upright. Flat nut blanks are supported by their end faces, while upright nut blanks are supported by their sides. The height of the upright nut blank is greater than its height when laid flat. The feeding device needs to arrange the nut blanks in an orderly, flat position so that the material transfer mechanism 200 of the tapping device can transfer the nut blanks from the front end of the conveying mechanism to the corresponding processing position on the tapping device 300. The material transfer mechanism 200 can be a robotic arm, which can move via a linear guide rail. The robotic arm has an internal support clamp, and the nut blanks are moved by the clamping claws of the internal support clamp extending into the center hole of the nut blank and tightening it. The material transfer mechanism and the tapping device are known technologies and will not be described in detail here.

[0042] To prevent the upright nut blank from affecting the feeding operation, the feeding device also includes a fixedly installed rejection rack 3. The rejection rack 3 has a rejection section located on one side of the receiving area along the conveying direction. The rejection section is located above the conveying surface and forms a gap between it and the conveying surface for the flat nut blank to pass through. The gap is slightly larger than the height of the flat nut blank but smaller than the height of the upright nut blank. The rejection section has a guide surface 30 located on the side where the receiving area is located. The guide surface 30 is vertical and obliquely placed above the conveying surface. The guide surface 30 is used to prevent the upright nut blank and guide the upright nut blank to shift to one side of the conveying mechanism 2 and leave the conveying surface. The conveying direction is from back to front. The guide surface 30 is located in front of the receiving area and faces the upright nut blank. The upright nut blank is relatively tall. The guide surface 30 blocks the upright nut blank above the conveying surface of the conveying mechanism 2. The normally flat nut blank can pass through the gap between the rejection part where the guide surface 30 is located and the conveying surface and continue to move forward. After the upright nut blank comes into contact with the guide surface 30, since the support area is still relatively large when it is upright, it cannot be made to fall down and become flat by blocking alone. Therefore, through the guiding effect of the guide surface 30, under the action of the conveying force, the upright nut blank is shifted to one side of the conveying mechanism 2 in the left and right direction, and then leaves the conveying surface, realizing the automatic rejection effect of the upright nut blank. This can avoid the problem of high labor intensity caused by frequent manual intervention to adjust the nut blank and reduce the labor intensity of workers.

[0043] The extension direction of the conveying surface of the conveying mechanism 2 is consistent with the conveying direction when the conveying mechanism 2 conveys the nut blank, that is, the front-to-back direction. The width direction of the conveying surface is the left-to-right direction. The guide surface 30 is a vertical surface, which includes an inclined surface extending from one side to the other in the width direction of the conveying surface. The inclined surface is used to guide the upright nut blank to shift. The guide surface 30 spans the left and right sides of the conveying surface in the left-to-right direction. In this embodiment, the guide surface 30 is an inclined surface as a whole, which is convenient for manufacturing. The guide surface 30 extends inclinedly from right to left, with the left edge of the inclined surface forward and the right edge of the inclined surface backward, which can guide the upright nut blank to shift to the left and away from the conveying surface. In other embodiments, the guide surface can also be a concave arc surface, so that the left and right edges of the guide surface are set one in front and one behind, which can guide the upright nut blank to shift to one side.

[0044] The conveying mechanism 2 has a rejection area for the position where the upright nut blank leaves the conveying surface. The rejection area is a section located behind the guide surface 30 and in front of the receiving area. The feeding device also includes a return chute 4 corresponding to the rejection area. The return chute 4 and the feeding mechanism are arranged side by side, located on the left side of the conveying mechanism 2, with the lower end of both extending into the hopper 1 and the upper end extending into the conveying mechanism 2. Under the guidance of the guide surface 30, the upright nut blank leaves the conveying surface and shifts to the return chute 4, falling down along the return chute 4 back to the hopper 1 for refeeding. In other embodiments, a separate receiving box can also be set up so that the upright nut blanks leaving the conveying surface fall into a separate receiving box through the chute. The nut blanks collected in the receiving box are periodically returned to the hopper by manual labor. In this case, the positions of the hopper and the feeding mechanism can be more flexible.

[0045] To prevent congestion and jamming at the guide surface 30, the feeding device also includes a pushing mechanism 5 and a sensor 6. The pushing mechanism 5 includes a telescopic push rod 51. The sensor 6 is used to detect the accumulation of nut blanks on the side of the guide surface 30 near the receiving area. The push rod 51 extends when nut blanks accumulate on the side of the guide surface 30 near the receiving area to push the nut blanks that are abutting the guide surface 30 away from the conveying surface, preventing a large accumulation of nut blanks on one side of the guide surface 30 due to failure to slide off in time, thus ensuring reliable operation. In other embodiments, the pushing mechanism and sensor may be omitted as needed.

[0046] The pushing mechanism 5 is fixed on the fixed edge of the conveying mechanism 2 on the right side of the conveying surface, and the sensor 6 is fixed on the fixed edge of the conveying mechanism 2 on the left side of the conveying surface. The pushing mechanism 5 is located on the right side of the rejection section where the guide surface 30 is located. In this embodiment, the pushing mechanism 5 adopts a cylinder. The piston rod of the cylinder and the extension rod fixed at the end of the piston rod together constitute the push rod 51. The push rod 51 can extend and retract. When extended, it can extend from below the rejection section where the guide surface 30 is located to behind the guide surface 30, pushing the adjacent upright nut blanks behind the guide surface 30 away from the conveying surface. When retracted, it opens the passage, allowing the flat nut blanks to be conveyed normally. The sensor 6 can be a laser sensor 6 or a vision sensor 6, which can sense the accumulation and stagnation of nut blanks behind the guide surface 30, thereby sending a signal to the control system, which in turn controls the pushing mechanism 5 to actively push the corresponding upright nut blanks away and onto the return slide 4.

[0047] The conveying mechanism 2 includes a fixed base 21 and a conveyor chain plate that can circulate in the front-to-back direction. The upper surface of the conveyor chain plate is used to form a conveying surface. The fixed base 21 includes fixed edges respectively provided on the left and right sides of the conveyor chain plate. The rejecting frame 3 is fixed on the fixed edges, resulting in a simple structure. In other embodiments, the rejecting frame can also be fixed separately on the ground.

[0048] The rejection rack 3 includes a fixed part fixed to the fixed edge on the right side of the conveying surface of the conveying mechanism 2, and an extended part extending to the left side of the conveying surface based on the fixed part. The extended part constitutes the rejection part, and the guide surface 30 is located on the inclined extended part, which facilitates the fabrication and shaping of the rejection rack 3. In other embodiments, fixed parts may be connected to the left and right ends of the rejection part, and the two fixed parts may be fixed to the fixed edges on the left and right sides of the conveying surface, respectively.

[0049] Limiting plates 22 are provided on both sides of the conveying surface of the conveying mechanism 2. Limiting plates 22 are also fixed on both sides of the conveying surface of the fixed base 21. The edges of the fixed base 21 on both sides of the conveying surface and the limiting plates 22 fixed thereon together constitute the fixed edges of the conveying mechanism 2. The limiting plates 22 are L-shaped bent plates with horizontal and vertical edges. The horizontal edge of the limiting plate 22 is fixed to the fixed base 21, and the height of the vertical edge is adapted to the height of the flat nut blank. A channel is formed between the vertical edges of the left and right limiting plates 22 to limit the nut blank, so that the nut blanks can move forward in an orderly row. A clearance notch is provided on the right limiting plate 22 corresponding to the position of the push rod 51, so that the push rod 51 can extend into the upper part of the conveying surface to push away the obstructing nut blank.

[0050] The material rejection rack 3 has a bent plate structure. The overhanging part of the material rejection rack 3 is bent relative to the fixed part. The fixed part is attached to the outer side of the vertical edge of the right limit plate 22 and fixed. The overhanging part extends above the limit plate 22 to ensure the position of the guide surface 30.

[0051] The left and right limiting plates 22 are offset in the conveying direction of the conveying mechanism 2, forming a receiving area at the offset. The rear end of the left limiting plate 22 is relatively forward, while the rear end of the right limiting plate 22 is relatively backward, allowing the left limiting plate 22 to avoid the feeding mechanism. The receiving area is located behind the left limiting plate 22, and the left limiting plate 22 is located in front of the rejection area. The feeding mechanism is used to transfer the nut blanks in the hopper 1 to the receiving area and drop them onto the conveying surface. The right limiting plate 22 can constrain the nut blanks, preventing them from sliding to the right. The rear end of the right limiting plate 22 is also connected to a rear baffle, which is horizontal above the conveying surface, facilitating the receiving area in front of the rear baffle to receive the nut blank material. In other embodiments, the rear end of the right limiting plate can be flush with the rear end of the left limiting plate, and no limiting plate is provided in the receiving area.

[0052] The guide surface 30 of the ejector frame 3, which is horizontal above the conveying surface, is used to block and guide the vertically conveyed nut blanks, causing the vertically placed nut blanks to fall along the inclined direction of the guide surface. This prevents the vertically placed nut blanks from continuing to be conveyed forward and affecting the normal operation of the transfer mechanism. At the same time, no manual intervention is required, saving manpower.

[0053] Embodiment 2 of the feeding device of the nut tapping equipment of this utility model:

[0054] The difference between this embodiment and Embodiment 1 above lies in the structural form of the rejection rack, such as... Figure 3 and Figure 4 As shown, the rejection rack 3 includes a first plate 31, a second plate 32, a reinforcing plate 33, and a fixing plate 34. The first plate 31 and the second plate 32 are set at an angle and connected to each other. The first plate 31 and the second plate 32 are both perpendicular to the conveying surface. The first plate 31 and the second plate 32 are both inclined relative to the conveying direction, and the angle between the inclination direction of the first plate 31 and the conveying direction is smaller than the angle between the inclination direction of the second plate 32 and the conveying direction. The front end of the first plate 31 has a portion that extends directly above the conveying surface. The second plate 32 is located above the conveying surface and is connected to the front end of the first plate 31. The portion of the first plate 31 that protrudes forward from the second plate 32 is fixed with the second plate 32. The middle part of the first plate 31 is connected to the fixing plate 34. The fixing plate 34 is set horizontally and is fixed to the horizontal edge of the right limit plate. The portion of the first plate 31 that connects to the second plate 32 and is located directly above the conveying surface, together with the first plate 31, constitutes the rejecting section of the rejecting frame 3. The rearward side of the first plate 31 and the leftward side of the portion of the first plate 31 that connects to the second plate 32 and is located directly above the conveying surface together form a guide surface 30, which has two inclined surfaces: a first inclined surface 301 on the first plate 31 and a second inclined surface 302 on the second plate 32. The inclination angles of the two inclined surfaces relative to the conveying direction gradually increase. Both the first inclined surface 301 and the second inclined surface 302 are inclined towards the left rearward side, but at different inclination angles. Spaces are provided between the first inclined surface 301 and the second inclined surface 302 and the conveying surface, as well as on the right limiting plate, to avoid the push rod of the pushing mechanism 5.

[0055] During the conveying of the nut blank, the upright nut blank is first guided by the first inclined surface 301 to the second inclined surface 302, and then guided away from the conveying mechanism by the second inclined surface 302. In other embodiments, the guide surface can also have three or more inclined surfaces by bending the plate.

[0056] The rejection rack 3 is mounted in an adjustable position on the right fixed edge of the conveying mechanism. By changing the position of the rejection rack 3, the orientation angle of the guide surface 30 can be changed, facilitating the adjustment of the inclination angle of the inclined plane. The fixed plate 34 has two adjusting elongated holes 35, and the corresponding limiting plate has two corresponding adjusting mating elongated holes. The adjusting elongated holes 35 and the adjusting mating elongated holes are arranged intersectingly. Bolts can be inserted at the intersection for fixation. When the bolts are loosened, the rejection rack 3 can be rotated to change its position relative to the conveying mechanism, and the bolt fixing position can be changed accordingly, achieving adjustable installation. In other embodiments, the rejection rack may not be adjusted, or the installation orientation of the rejection rack relative to the conveying mechanism may be adjustable through a single bolt connection point.

[0057] Embodiment 3 of the feeding device of the nut tapping equipment of this utility model:

[0058] The difference between this embodiment and Embodiment 1 above lies in the driving form of the pushing mechanism, such as... Figure 5 As shown, the pushing mechanism 5 uses an electric push rod to push the upright nut blank away from the conveying mechanism. In other embodiments, the pushing mechanism can also use a hydraulic cylinder to push the upright nut blank away from the conveying mechanism.

[0059] Embodiments of the nut tapping device of this utility model:

[0060] The nut tapping equipment includes a feeding device and a tapping device for tapping the nut blank. The feeding device in this embodiment has the same structure as that described in any embodiment of the feeding device of the nut tapping equipment described above, and will not be repeated here.

[0061] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A feeding device of a nut tapping apparatus, comprising a conveying mechanism having a conveying surface, the conveying mechanism being provided with a receiving area for corresponding with a nut blank feeding mechanism so that the nut blanks fall on the conveying surface, the conveying surface being used to convey the nut blanks from the receiving area to a set feeding position, characterized in that, The feeding device also includes a fixedly installed rejection rack. The rejection rack has a rejection section located on one side of the receiving area along the conveying direction. The rejection section 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 section 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.

2. The nut threading apparatus feeding device according to claim 1, 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.

3. The nut threading apparatus feeding device according to claim 2, characterized in that, The inclined plane has two or more sections, and the inclination angle of each section relative to the conveying direction increases progressively.

4. The nut threading apparatus feeding device according to claim 1 or 2 or 3, 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.

5. The nut threading apparatus feeding device according to claim 1 or 2 or 3, characterized in that, The conveying mechanism has a rejection zone for the position where the nut blank leaves the conveying surface. The feeding device also includes a return slide corresponding to the rejection zone, which allows the nut blank that has left the conveying surface to return to the hopper.

6. The nut threading apparatus feeding device according to claim 1 or 2 or 3, characterized in that, The conveying mechanism includes a conveyor belt or a conveyor chain plate, the upper surface of which forms the conveying surface, and fixed edges are provided on both sides of the conveyor belt or conveyor chain plate, with the material rejection frame fixed on the fixed edges.

7. The feeding device of the nut tapping equipment according to claim 6, characterized in that, The rejection rack is mounted on the fixed edge in an adjustable position so that the orientation angle of the guide surface can be changed by changing the position of the rejection rack.

8. The nut threading apparatus feeding device according to claim 1 or 2 or 3, characterized in that, The rejection rack includes a fixed part located on one side edge of the conveying surface and fixed to the conveying mechanism, and an extension part extending from the fixed part to the other side of the conveying surface, the extension part constituting the rejection part.

9. The nut threading apparatus feeding device according to claim 1 or 2 or 3, characterized in that, The conveying mechanism is equipped with limiting plates on both sides of the conveying surface. The limiting plates on both sides are staggered in the conveying direction of the conveying mechanism and form a receiving area at the staggered point. The feeding mechanism is used to transfer the nut blank in the hopper to the receiving area and drop it onto the conveying surface.

10. A nut tapping apparatus, characterised in that, The device includes the feeding device of the nut tapping equipment according to any one of claims 1-9 and the tapping device for tapping the nut blank.

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