A chip separation device for screw processing

Abstract

The present invention relates to the technical field of screening devices, and specifically discloses an iron chip separation device for screw processing, comprising: a rotating drum and a frame for installing the rotating drum, a driving source for driving the rotating drum to rotate counterclockwise is installed on the frame, a discharging spiral is fixedly installed in the rotating drum, a plurality of chip discharge openings are provided on the rotating drum at equal intervals along the direction of the discharging spiral, the iron chip separation device also comprises: a magnetic drum, which is coaxially sleeved on the outside of the rotating drum and has a gap between the magnetic drum and the rotating drum, the magnetic drum is divided into a magnetic zone and a non-magnetic zone, the non-magnetic zone is located at the left end of the magnetic drum and extends to the front and rear ends of the magnetic drum in the front-to-back direction, a chip discharge groove is provided in the middle of the non-magnetic zone, when the flaky iron chips move to the non-magnetic zone with the drum, the flaky iron chips slide downward along the drum wall, thereby entering the gap between the baffle and the chip discharge opening, so that the flaky iron chips enter the collecting tank through the chip discharge groove, and this arrangement can screen out flaky iron chips larger than the sieve hole.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, and in particular to an iron chip separation device in screw processing. Background Art

[0002] Screws are one of the most commonly used fasteners, so there is a great demand for screws in the market. In the screw manufacturing process, generally after the screws are formed by a forming machine, in order to separate the screws from the iron filings and collect them to ensure the high quality of the final product, an iron filing separation device is often required. The iron filing separation device is divided into two types: screening devices and magnetic separation devices. Since the screening device has low cost and high efficiency, most processing plants often use screening devices to screen the iron filings in the screws.

[0003] A Chinese patent document with authorization announcement number CN207170196U discloses a screw factory thread rolling automatic iron chip screening device, including a frame, a supporting mechanism arranged on the frame, a screen cylinder mounted on the supporting mechanism and a motor that drives the screen cylinder to rotate, the supporting mechanism includes a Y-shaped bracket arranged on both sides of the frame, the vertical rod of the Y-shaped bracket is fixedly arranged on the frame, bearings are arranged on two oblique rods of the Y-shaped bracket, the screen cylinder is mounted on the bearing, a driven gear is arranged at one end of the screen cylinder, and a driving gear meshing with the driven gear is arranged on the output shaft of the motor.

[0004] When using a screening device to separate iron filings from screws, the screws are put into one end of the screen drum, and the rotation of the screen drum causes the internal spiral to rotate, thereby pushing the screws to move toward the discharge port. Therefore, continuous screening is possible with high efficiency. However, this screening device can only screen out granular iron filings, and there will also be flaky iron filings in the screws. Since the flaky iron filings are often larger than the screen holes, the flaky iron filings cannot be easily separated during screening. Summary of the invention

[0005] The invention provides an iron chip separation device in screw processing, aiming to solve the problem in the related art that flaky iron chips cannot be conveniently separated during screening.

[0006] A chip separation device for screw processing comprises: a rotating drum and a frame for mounting the rotating drum, a driving source for driving the rotating drum to rotate counterclockwise is mounted on the frame, a discharge screw is fixedly mounted in the rotating drum, a plurality of chip discharge ports are provided on the rotating drum at equal intervals along the direction of the discharge screw, and the chip separation device further comprises:

[0007] The magnetic cylinder is coaxially sleeved outside the rotating cylinder and has a gap with the rotating cylinder. The magnetic cylinder is divided into a magnetic area and a non-magnetic area. The non-magnetic area is located at the left end of the magnetic cylinder and extends to the front and rear ends of the magnetic cylinder along the front-to-back direction. A chip removal groove is opened in the middle of the non-magnetic area.

[0008] The baffle is arranged on the inner side of the chip discharge port, and screen holes are opened on the baffle. The front and rear sides of the baffle are in contact with the discharge spiral, the counterclockwise side of the baffle is connected to the counterclockwise side of the chip discharge port, and there is a gap between the clockwise side of the baffle and the clockwise side of the chip discharge port. The baffle is elastic, and an L-shaped material stripper plate is fixedly connected to the outer side of the baffle. The L-shaped material stripper plate includes a wall-attached portion, and a magnetic strip that can be attracted by the magnetic force of the magnetic cylinder is arranged on the counterclockwise side of the wall-attached portion. When the magnetic strip is in contact with the magnetic area, the wall-attached portion is tightly attached to the magnetic cylinder.

[0009] The effect is: when the driving source drives the drum to rotate counterclockwise, the magnetic force cannot make the screw adsorb on the drum. After rising a certain height along the drum, the screw rolls down toward the bottom of the drum. The contact area between the flaky iron chips and the drum is relatively large, so it can rotate with the drum. When the magnetic strip moves to the non-magnetic area, the L-shaped stripper plate rotates inward, thereby causing the baffle to rotate inward, thereby increasing the gap between the baffle and the chip discharge port. When the flaky iron chips move to the non-magnetic area with the drum, the flaky iron chips slide down along the drum wall, thereby entering the gap between the baffle and the chip discharge port, thereby causing the flaky iron chips to enter the chip discharge groove.

[0010] Preferably, the wall-adhering portion is provided with an avoidance groove for allowing flaky iron chips to pass through, so that when the iron chips fall onto the L-shaped stripping plate, they can pass through the avoidance groove along the L-shaped stripping plate and enter the chip discharge groove.

[0011] Preferably, a damping mechanism is provided on the outer side of the baffle, and when the screw hits the inner side of the baffle, the baffle is deformed, and the impact force is absorbed by the damping mechanism to prevent the baffle from being impacted and shaken.

[0012] Preferably, the damping mechanism includes a rotating rod rotatably mounted on the outside of the baffle, and an iron rod that can be attracted by the magnetic force of the magnetic cylinder is installed at the end of the rotating rod away from the baffle. The effect is that after the iron rod leaves the magnetic area and enters the non-magnetic area, the iron rod rotates downward and hits the baffle, thereby shaking out impurities blocked in the baffle screen holes.

[0013] Preferably, the hinge axis of the rotating rod and the baffle is located between one side of the baffle in the counterclockwise direction and the L-shaped material stripping plate. After the iron rod leaves the magnetic area and enters the non-magnetic area, the iron rod rotates downward and hits the baffle, thereby shaking out impurities blocked in the baffle screen holes.

[0014] Preferably, a collecting trough is provided below the chip discharge trough, and a discharge device is installed in the collecting trough, which facilitates the collection and discharge of iron chips.

[0015] Preferably, the baffle is composed of an arc plate and a straight plate, the straight plate is elastic, and is fixedly connected to the chip discharge port, and when the magnetic strip contacts the magnetic area, the axis of the arc plate is coaxial with the axis of the drum.

[0016] Preferably, a brush strip is provided at one clockwise end of the wall-adhering portion.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0018] The magnetic force cannot make the screw adsorb on the drum. After rising a certain height along the drum, the screw rolls down toward the bottom of the drum. The contact area between the flaky iron chips and the drum is relatively large, so it can rotate with the drum. At the same time, small particles of iron chips are adsorbed on the inner wall of the magnetic drum through the sieve holes. When the flaky iron chips move to the non-magnetic area with the drum, the flaky iron chips slide down along the drum wall and enter the gap between the baffle and the chip discharge port, so that the flaky iron chips enter the collection trough through the chip discharge groove. This setting can screen out flaky iron chips larger than the sieve holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 The figure is a schematic diagram of the structure of the present invention without the frame.

[0021] Figure 3 It is the front view after removing the frame of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the magnetic cylinder in the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the rotating drum in the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the baffle in the present invention.

[0025] Reference numerals:

[0026] 1. Rotating drum; 11. Discharging screw; 12. Chip discharge port; 2. Frame; 3. Driving source; 4. Magnetic drum; 41. Magnetic area; 42. Non-magnetic area; 43. Chip discharge groove; 5. Baffle; 5a. Arc plate; 5b. Straight plate; 51. L-shaped material removal plate; 511. Wall-attached part; 512. Magnetic strip; 52. Damping mechanism; 521. Rotating rod; 522. Iron rod; 6. Discharging device. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] like Figure 1-Figure 3As shown, a chip separation device for screw processing includes a frame 2, a rotating drum 1, a driving source 3, a magnetic drum 4, a plurality of baffles 5 and a damping mechanism 52. The rotating drum 1 is rotatably mounted on the frame 2, and a coaxial sleeve is arranged outside the rotating drum 1 with a gap between the rotating drum 1 and the rotating drum 1. The rotating drum 1 is fixedly connected to the frame 2. A discharge screw 11 is fixedly installed inside the rotating drum 1. A plurality of chip discharge ports 12 are provided on the rotating drum 1 at equal intervals along the direction of the discharge screw 11. The baffles 5 correspond to the chip discharge ports 12 one by one, and a screen hole is provided on the baffle 5. At the same time, since the magnetic drum 4 has magnetic force, Therefore, it will generate attraction for iron filings and screws, and the granular iron filings fall onto the magnetic drum 4 through the sieve holes on the baffle 5. The driving source 3 drives the rotating drum 1 to rotate counterclockwise, so that the screw moves toward the rear end along the direction of the discharging spiral 11. Since the contact area between the screw and the rotating drum 1 is relatively small, the magnetic force cannot make the screw adsorb on the rotating drum 1. After rising a certain height along the rotating drum 1, the screw rolls down toward the bottom of the rotating drum 1. The contact area between the flaky iron filings and the rotating drum 1 is relatively large, so it can continue to rise along the rotating drum 1, thereby completing the preliminary separation of the flaky iron filings and the screws.

[0029] like Figure 1 As shown, the driving source 3 includes a motor and a transmission belt. The motor is fixedly mounted on the frame 2. The output end of the motor is connected to the transmission belt. The transmission belt is sleeved on the drum 1, so that the motor drives the transmission belt to move, causing the drum 1 to rotate counterclockwise.

[0030] like Figure 2 , Figure 3 and Figure 4 As shown, the magnetic cylinder 4 is coaxially sleeved on the outside of the rotating cylinder 1 with a gap between the magnetic cylinder 4 and the rotating cylinder 1. The magnetic cylinder 4 is divided into a magnetic area 41 and a non-magnetic area 42. The non-magnetic area 42 is located at the left end of the magnetic cylinder 4 and extends to the front and rear ends of the magnetic cylinder 4 along the front-to-back direction. A chip discharge groove 43 is opened in the middle of the non-magnetic area 42, and a collecting groove is arranged below the chip discharge groove 43. A discharge device 6 (such as a auger device) is installed in the collecting groove.

[0031] like Figure 3-Figure 6As shown, the baffle 5 is composed of an arc plate 5a and a straight plate 5b, the straight plate 5b is elastic, and the straight plate 5b is fixedly connected to the chip discharge port 12. When the magnetic strip 512 contacts the magnetic area 41, the axis of the arc plate 5a is coaxial with the axis of the drum 1, and the front and rear sides of the baffle 5 are in contact with the discharge spiral 11. The counterclockwise side of the baffle 5 is connected to the counterclockwise side of the chip discharge port 12, and there is a gap between the clockwise side of the baffle 5 and the clockwise side of the chip discharge port 12, and the outer side of the baffle 5 is fixedly connected with an L-shaped The material stripping plate 51, the L-shaped material stripping plate 51 includes a wall-attached portion 511, the wall-attached portion 511 is provided with an avoidance groove for allowing flaky iron filings to pass through, and a magnetic strip 512 that can be attracted by the magnetic force of the magnetic cylinder 4 is provided on the counterclockwise side of the wall-attached portion 511. When the magnetic strip 512 contacts the magnetic area 41, the wall-attached portion 511 is tightly attached to the magnetic cylinder 4, and a brush strip is provided at the clockwise end of the wall-attached portion 511, so that when the brush strip moves along the magnetic cylinder 4, the brush strip scrapes the iron filings adsorbed on the magnetic cylinder 4 into the chip removal groove 43.

[0032] When the driving source 3 drives the drum 1 to rotate counterclockwise, the magnetic force cannot make the screw adsorb on the drum 1. After rising a certain height along the drum 1, the screw rolls down toward the bottom of the drum 1. The contact area between the flaky iron chips and the drum 1 is relatively large, so it can rotate with the drum 1. When the magnetic strip 512 moves to the non-magnetic area 42, the L-shaped material stripping plate 51 rotates inward, thereby causing the baffle 5 to rotate inward, thereby increasing the gap between the baffle 5 and the chip discharge port 12. When the flaky iron chips move to the non-magnetic area 42 with the drum, the flaky iron chips slide downward along the drum wall, thereby entering the gap between the baffle 5 and the chip discharge port 12, thereby causing the flaky iron chips to enter the chip discharge groove 43.

[0033] like Figure 3 and Figure 6 As shown, the damping mechanism 52 includes a rotating rod 521 rotatably mounted on the outside of the baffle 5, and the hinge axis of the rotating rod 521 and the baffle 5 is located between the counterclockwise side of the baffle 5 and the L-shaped material stripping plate 51. An iron rod 522 that can be attracted by the magnetic force of the magnetic cylinder 4 is installed at the end of the rotating rod 521 away from the baffle 5. When the screw hits the inner side of the baffle 5, the baffle 5 is deformed, and the rotating rod 521 pushes the iron rod 522 to slide along the magnetic cylinder 4, thereby utilizing the attraction between the magnetic cylinder 4 and the iron rod 522 for damping, thereby preventing the baffle 5 from being greatly deformed after being hit by the screw, causing a large shock to the baffle 5, and after the iron rod 522 separates from the magnetic area 41 and enters the non-magnetic area 42, the iron rod 522 rotates downward and strikes the baffle 5, thereby shaking out impurities blocked in the screen holes of the baffle 5.

[0034] Working principle: Put the screw into the drum 1, and the driving source 3 drives the drum 1 to rotate counterclockwise, so that the screw moves toward the rear end along the direction of the discharge spiral 11. The magnetic force cannot make the screw adsorbed on the drum 1. After rising to a certain height along the drum 1, the screw rolls down toward the bottom of the drum 1. The contact area between the flaky iron filings and the drum 1 is relatively large, so it can rotate with the drum 1. At the same time, small particles of iron filings are adsorbed on the inner wall of the magnetic drum 4 through the sieve holes. When the L-shaped material stripping plate 51 moves, the brush strip scrapes the iron filings adsorbed on the magnetic drum 4 into the chip discharge groove 43, and then the magnetic strip 512 and the magnetic area 4 1, the L-shaped stripper plate 51 rotates inwards, thereby causing the baffle 5 to rotate inwards, so that the gap between the baffle 5 and the chip discharge port 12 becomes larger, and then, when the flaky iron chips move with the drum to the non-magnetic area 42, the flaky iron chips slide down along the drum wall, and enter the gap between the baffle 5 and the chip discharge port 12, so that the flaky iron chips pass through the chip discharge groove 43 into the collecting groove, and the discharge device 6 in the collecting groove discharges the iron chips to the outside, and then the baffle 5 continues to rotate over the collecting groove, and the screw hits the baffle 5, so that the magnetic strip 512 contacts the magnetic area 41 again, so that the baffle 5 is reset.

[0035] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A chip separation device for screw processing, comprising: A rotating drum and a frame for mounting the rotating drum, a driving source for driving the rotating drum to rotate counterclockwise is mounted on the frame, a discharging screw is fixedly mounted in the rotating drum, and the rotating drum is characterized in that a plurality of chip discharge openings are provided on the rotating drum at equal intervals along the direction of the discharging screw, and the chip separation device further comprises: The magnetic cylinder is coaxially sleeved outside the rotating cylinder and has a gap with the rotating cylinder. The magnetic cylinder is divided into a magnetic area and a non-magnetic area. The non-magnetic area is located at the left end of the magnetic cylinder and extends to the front and rear ends of the magnetic cylinder along the front-to-back direction. A chip removal groove is opened in the middle of the non-magnetic area. The baffle is arranged on the inner side of the chip discharge port, and screen holes are opened on the baffle. The front and rear sides of the baffle are in contact with the discharge spiral, the counterclockwise side of the baffle is connected to the counterclockwise side of the chip discharge port, and there is a gap between the clockwise side of the baffle and the clockwise side of the chip discharge port. The baffle is elastic, and an L-shaped material stripper plate is fixedly connected to the outer side of the baffle. The L-shaped material stripper plate includes a wall-attached portion, and a magnetic strip that can be attracted by the magnetic force of the magnetic cylinder is arranged on the counterclockwise side of the wall-attached portion. When the magnetic strip is in contact with the magnetic area, the wall-attached portion is tightly attached to the magnetic cylinder.

2. The chip separation device for screw machining according to claim 1, characterized in that: The wall-adhering portion is provided with an escape groove for allowing flaky iron filings to pass through.

3. The chip separation device in screw processing according to claim 1, characterized in that: A damping mechanism is arranged on the outer side of the baffle plate. When the screw hits the inner side of the baffle plate, the baffle plate is deformed and the impact force is absorbed by the damping mechanism.

4. The chip separation device in screw processing according to claim 3, characterized in that: The damping mechanism comprises a rotating rod rotatably mounted on the outer side of the baffle, and an iron rod which can be attracted by the magnetic force of the magnetic cylinder is mounted on one end of the rotating rod away from the baffle.

5. The chip separation device for screw machining according to claim 4, characterized in that: The hinge axis of the rotating rod and the baffle is located between one side of the baffle in the counterclockwise direction and the L-shaped material-dispensing plate. After the iron rod leaves the magnetic area and enters the non-magnetic area, the iron rod rotates downward and hits the baffle, thereby shaking out impurities blocked in the baffle screen holes.

6. The chip separation device in screw processing according to claim 1, characterized in that: A collecting groove is arranged below the chip removal groove, and a material removal device is installed in the collecting groove.

7. The chip separation device for screw machining according to any one of claims 1 to 6, characterized in that: The baffle is composed of an arc plate and a straight plate. The straight plate is elastic and fixedly connected to the chip removal port. When the magnetic strip contacts the magnetic area, the axis of the arc plate is coaxial with the axis of the drum.

8. The chip separation device in screw processing according to claim 1, characterized in that: A brush strip is arranged at one clockwise end of the wall-adhering portion.

Images