CN212916433U

CN212916433U - Screening device of screw forming machine

Info

Publication number: CN212916433U
Application number: CN202021543257.9U
Authority: CN
Inventors: 杨禕冰
Original assignee: Yiyi Precision Hardware Shanghai Co ltd
Current assignee: Yiyi Precision Hardware Shanghai Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-04-09
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a screening device of a screw forming machine, which relates to the technical field of screw forming machines and solves the problem that chips are adhered to the surface of finished screws, wherein the screening device of the screw forming machine comprises a screening box, a plurality of rollers are arranged in the screening box in a rotating way, a plurality of rollers are spaced, a plurality of elastic brush sheets are arranged on the side walls of the rollers, and a driving mechanism for driving the rollers to rotate is arranged on the outer side wall of the screening box; the screening case is provided with feed inlet and discharge gate on the double-phase relative lateral wall along the direction of delivery of roller, the one end that the screening case is close to the discharge gate is provided with and receives the workbin. The utility model provides a screening device of screw make-up machine has the high efficiency and gets rid of the clastic effect in finished screw surface.

Description

Screening device of screw forming machine

Technical Field

The utility model belongs to the technical field of the technique of screw make-up machine and specifically relates to a sieving mechanism of screw make-up machine is related to.

Background

The screw forming machine is a common device for automatically processing metal wires into screws, generally, the screws are formed in a stamping mode, then the screws are processed by adopting a tapping process, and cooling lubricating oil is continuously sprayed on the processed screws in the process of processing the screws by adopting the tapping process so as to prevent a tapping tool bit from being damaged.

In the Chinese utility model with publication number CN206009680U, a screw forming machine is disclosed, which comprises a main machine box, a feeding system, a cutting system and a straightening table, the feeding system is provided with a mainframe box, the right side of the mainframe box is provided with a machine center, the feeding system and the shearing system are arranged in the machine center, a straightening table is arranged on the right side of the center of the machine, a wire center is arranged on the straightening table, a rotary adjusting hand wheel is arranged on the feeding system, an adjusting shaft, a screw, a material blocking length indicator, a pressing plate and a material blocking device are arranged below the rotary adjusting hand wheel, one side of the feeding system is provided with a shearing system, the shearing system is provided with a first shearing die, a shear kernel, a back plate, a shear bar and a wire rod, and a material pushing rod, a bottom die seat and a second shearing die are arranged on one side of the wire, a shear cover is arranged below the second shearing die, and the wire required by the screw is sheared through the first shearing die and the second shearing die.

The above prior art solutions have the following drawbacks: when a screw forming machine processes screws through a tapping process, a large amount of chips generated in the tapping process adhere to the surfaces of the screws, and the chips are prone to have adverse effects on transportation and collection of finished screws.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a sieving mechanism of screw make-up machine to solve above-mentioned technical problem, it has the clastic effect of getting rid of and collecting the completion processing screw surface adhesion.

The utility model provides a sieving mechanism of screw make-up machine, includes screening case, its characterized in that: a plurality of roll shafts are rotatably arranged in the screening box, intervals exist among the roll shafts, a plurality of elastic brush pieces are arranged on the side walls of the roll shafts, and a driving mechanism for driving the roll shafts to rotate is arranged on the outer side wall of the screening box; the screening case is provided with feed inlet and discharge gate on the double-phase relative lateral wall along the direction of delivery of roller, the one end that the screening case is close to the discharge gate is provided with and receives the workbin.

Through adopting above-mentioned technical scheme, the finished product screw of accomplishing processing falls into the screening case through the feed inlet, and the roller of screening incasement is with the screw bearing on the roller lateral wall, simultaneously, starts the actuating mechanism on the screening case, and actuating mechanism drive roll axle rotates, and the screw of bearing on the roller lateral wall rolls towards the direction of discharge gate along with the rotation of roller to drop to receiving in the material case through the discharge gate. The screw is at the epaxial rolling in-process of roller, and the epaxial elasticity of roller brush piece can be brushed the piece on screw surface and fallen, and the piece that brushes falls will drop to the bottom wall of screening case through the gap between the adjacent roller. So set up, be favorable to getting rid of the piece at the in-process of collecting the finished product screw, promoted production automation's degree, and elasticity brush piece is favorable to making the screw not damaged when cleaing away the piece.

Furthermore, the distance between one end of the adjacent roll shaft, which is close to the side wall of the bottom of the screening box, and the side wall of the bottom of the screening box is distributed in a gradient manner.

Through adopting above-mentioned technical scheme, when being stained with the rotation of piece screw and rolling along with the roller, the adjacent roller that is echelon distribution makes to be stained with the piece screw and moves and move with the direction that is close to the bottom side wall of sieve towards the direction of keeping away from bottom side wall of sieve in turn, is favorable to making to be stained with the piece screw and fully rolls, has further promoted the clearance of piece.

Furthermore, the elastic brush piece comprises a fixing part and a brush hair part, the fixing part is fixedly connected with the side wall of the roller shaft, the brush hair part is arranged at one end, away from the roller shaft, of the fixing part, and the elastic brush pieces on the adjacent roller shafts are arranged in a staggered mode.

Through adopting above-mentioned technical scheme, when being stained with the rotation of piece screw along with the roller and roll, the brush hair portion of elasticity brush piece can be swept away the more tiny piece of screw surface adhesion for some more difficult tiny pieces of cleaing away in screw surface also can be cleaned, is favorable to promoting the clastic clearance in screw surface, and the elasticity brush piece that sets up crisscross each other has guaranteed that the screw that is stained with the piece can fully contact with the elasticity brush piece, has further promoted clastic clearance.

Further, be provided with the fluted disc in the screening incasement, the fluted disc sets up in one side that the roller is close to the screening bottom of the case portion, just the lateral wall and the inside wall butt of screening incasement of fluted disc, the fluted disc is provided with the clastic magnetic part that is used for adsorbing screw surface adhesion by the one end of keeping away from the roller is fixed.

By adopting the technical scheme, when the screw is subjected to chip cleaning operation, the fallen chips fall into the groove disc; so set up, be favorable to collecting the piece that has been fallen, the technical staff of being convenient for is unified to be handled the piece. The magnetic part can adsorb the piece on screw surface to the frid in, is favorable to avoiding great piece card in the gap of adjacent roller, has further promoted clastic clearance.

Furthermore, be provided with a plurality of slotted holes on the frid, just the one end that the feed inlet was kept away from to the screening case is provided with the collection oil box, the collection oil box is worn to establish in the screening case, just collection oil box and screening case sliding connection.

Through adopting above-mentioned technical scheme, when screw forming machine passes through the tapping technology processing screw, need constantly spray the lubricating oil that is used for the cooling on the screw surface of processing, consequently, the finished product screw surface of accomplishing the processing will be stained with a large amount of unnecessary lubricating oil, the in-process that the finished product screw removed and sweeps in the screening case, the unnecessary lubricating oil of screw surface accessible falls into the frid in the clearance between the adjacent roller, and drip to the collection oil box through the slotted hole on the frid, when the lubricating oil in the collection oil box needs the recycle, can take out the collection oil box from the screening incasement, and do the lubricating oil in the collection oil box in addition and handle.

Furthermore, a hopper is fixedly arranged on the outer side wall of the screening box close to the discharge port, one end of the hopper far away from the screening box is obliquely arranged towards the material receiving box, and one end of the hopper far away from the screening box is abutted against one side wall of the material receiving box close to the screening box; the inside one end that is close to the hopper of receipts workbin is provided with the temporary storage dish, the one end that the hopper was kept away from to the temporary storage dish is fixed and is provided with the balancing weight, the temporary storage dish is provided with the axis of rotation in one side that the balancing weight is close to the hopper, the axis of rotation is worn to establish on the double-phase relative lateral wall of receiving the workbin, the axial rotation that the temporary storage dish can surround the axis of rotation, just the one end looks butt that the discharge gate was kept away from to the one end that the balancing weight.

By adopting the technical scheme, when the screw forming machine processes screws, if a certain batch of screws are unqualified products due to some reasons, the unqualified product screws fall into the material receiving box and are mixed with the qualified product screws, all the screws in the material receiving box are discarded, and the waste of resources is caused. By arranging the temporary storage disc and the balancing weight, when the screws which finish the scrap cleaning operation roll into the material receiving box through the hopper, the screws firstly fall into the temporary storage disc, when the total mass of the screws collected in the temporary storage disc is greater than that of the balancing weight, one end of the temporary storage disc, which is far away from the balancing weight, rotates in the direction far away from the hopper, and at the moment, the screws in the temporary storage disc slide onto the bottom side wall of the material receiving box through the action of gravity; when finding that the screws in the temporary storage disk have unqualified products, a technician can close the screw forming machine and abandon the unqualified products in the temporary storage disk, so that more screws are prevented from being wasted. So set up, be favorable to practicing thrift the production data, loss when reducing the accident.

Furthermore, a material collecting box is arranged in the material collecting box, and a plurality of oil control holes are formed in the material collecting box; the screen cloth is arranged in the material receiving box and is arranged at one end, close to the side wall of the material receiving box, of the material collecting box.

By adopting the technical scheme, when the screws fall into the material collecting box, and redundant lubricating oil adhered to the surfaces of the screws in the material collecting box can pass through the oil control holes and can drip to the side wall of the bottom of the material collecting box through the screen; the screen cloth can be to the lubricated oil drop of passing through carry out filtration treatment, is favorable to promoting the cleanliness of the lubricating oil of collecting in the collection box.

Furthermore, an oil receiving drawer box penetrates through the material receiving box and is connected with the material receiving box in a sliding mode.

By adopting the technical scheme, lubricating oil adhered to the surface of the screw in the aggregate box can pass through the screen mesh through the oil control hole and drip into the oil collection drawer box; the collection of the redundant lubricating oil adhered to the surface of the finished screw is facilitated, and when the lubricating oil in the oil drawer box needs to be recycled, the oil drawer box can be taken out of the material receiving box and the oil in the oil drawer box is additionally treated; the operation of recovering the redundant lubricating oil on the surface of the screw is facilitated.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the plurality of roll shafts are arranged in the screening box, and the plurality of elastic brush pieces are arranged on the roll shafts, so that the machined screws are transported in the screening box, and meanwhile, the cleaning operation of chips on the surfaces of finished screws is finished, and the automation degree of the production operation process is favorably improved;

2. the groove disc is arranged in the screening box, and the electromagnet is arranged on the groove disc, so that scraps on the surface of the screw can be adsorbed in the groove disc, the situation that larger scraps are clamped in gaps of adjacent roll shafts is avoided, and the scrap removal rate is further improved;

3. the temporary storage disc is arranged in the material receiving box, and the balancing weight is arranged on the temporary storage disc, so that when the screws which finish the scrap cleaning operation roll into the material receiving box through the hopper, the screws firstly fall into the temporary storage disc, when the total mass of the screws collected in the temporary storage disc is greater than the mass of the balancing weight, one end of the temporary storage disc, which is far away from the balancing weight, rotates towards the direction far away from the hopper, and at the moment, the screws in the temporary storage disc slide onto the bottom side wall of the material receiving box through the action of gravity; when finding that the screw in the temporary storage disk has unqualified products, a technician can close the screw forming machine and abandon the unqualified products in the temporary storage disk, so that more screws are avoided being wasted, production data are saved, and loss caused by accidents is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

fig. 3 is an overall sectional view of the present invention.

Reference numerals: 1. a screening box; 2. a feed inlet; 3. a discharge port; 4. a roll shaft; 5. an elastic brush piece; 51. a fixed part; 52. a brush part; 6. a wheel disc; 7. a drive mechanism; 8. a grooved disc; 9. a slot; 10. a magnetic member; 11. an oil collecting box; 12. a material receiving box; 13. a hopper; 14. a temporary storage disk; 15. a balancing weight; 16. a rotating shaft; 17. a material collecting box; 18. an oil control hole; 19. screening a screen; 20. an oil collecting drawer box.

Detailed Description

The following provides a more detailed description of the present invention with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a screening mechanism of screw make-up machine, including rectangle screening case 1, rectangular feed inlet 2 and discharge gate 3 have been seted up on the double-phase relative lateral wall along length direction to screening case 1, and feed inlet 2 and discharge gate 3 are located the one end that the place lateral wall is close to screening case 1 top lateral wall respectively. A plurality of cylindrical rollers 4 are arranged at one end of the screening box 1 close to the feeding port 2 in a penetrating way, and in the embodiment, the number of the rollers 4 is preferably twelve. A plurality of roller 4 distribute in screening case 1 length direction's between two inside walls, and the one end that two adjacent roller 4 are close to screening roof lateral wall is echelon to be distributed with the distance between the screening bottom of the case lateral wall, and has the interval that the distance is the same between per two adjacent roller 4, and the spacing distance between adjacent roller 4 is less than the rod footpath of finished product screw rod. A plurality of elastic brush pieces 5 are uniformly and vertically arranged on the outer side wall of the roller shaft 4, and the elastic brush pieces 5 extend in the direction away from the roller shaft 4, in the embodiment, the material of the elastic brush pieces 5 is preferably fluororubber.

The elastic brush piece 5 comprises a rectangular fixing part 51 and a brush part 52 consisting of a plurality of fluororubber brush hairs, the fixing part 51 of the elastic brush piece 5 is fixedly connected with the outer side wall of the roller shaft 4, and the brush part 52 is fixed at one end of the fixing part 51 far away from the roller shaft 4; the elastic brush pieces 5 of the adjacent roll shafts 4 are arranged in a staggered mode one by one, so that the cleaning of the chips on the screws adhered with the small chips is facilitated, and the chip cleaning efficiency is improved.

One end of the roller shaft 4, which is far away from the screening box 1, is fixedly provided with a cylindrical wheel disc 6, wherein the wheel discs 6 on the six roller shafts 4, which are far from the side wall of the bottom of the screening box, are arranged opposite to the wheel discs 6 on the six roller shafts 4, which are far from the side wall of the bottom of the screening box, the two opposite side walls of the screening box 1, which are close to the wheel discs 6, are respectively and fixedly provided with a driving mechanism 7, the driving mechanism 7 comprises a motor and a belt, and the wheel discs 6; when the motor is started, the motor drives the wheel disc 6 to rotate through the belt, the wheel disc 6 drives the roller shaft 4 to rotate, and screws on the roller shaft 4 can move towards the discharge port 3.

Referring to fig. 3, a rectangular groove disc 8 is fixedly welded in the screening box 1, the groove disc 8 is positioned at one end of the roller shaft 4 far away from the discharge port 3, and the circumferential side wall of the groove disc 8 is abutted with the circumferential inner side wall of the screening box 1; when the screw carries out the operation of clearing up bits, the piece that is cleared up down can drop to the frid 8 in, is favorable to collecting the piece that has fallen off, and the technical staff of being convenient for carries out unified processing to the piece. A plurality of circular slotted holes 9 are uniformly and vertically arranged on the slotted disc 8. A magnetic member 10 is fixedly arranged at one end of the fluted disc 8 far away from the roller shaft 4, and in the embodiment, the magnetic member 10 is preferably an electromagnet; the magnetic member 10 can attract the debris on the surface of the screw into the grooved disk 8, and the debris removal rate is improved.

A rectangular oil collecting box 11 is slidably arranged on the side wall of the bottom of the screening box 1 in a penetrating way; the cooling lubricating oil adhered to the surfaces of the chippings and the cooling lubricating oil adhered to the surfaces of the screws can be dropped into the oil collecting box 11 through the slotted holes 9 on the slotted disc 8, when the cooling lubricating oil in the oil collecting box 11 needs to be recycled, the oil collecting box 11 can be taken out from the screening box 1, and the cooling lubricating oil in the oil collecting box 11 can be treated additionally. So set up, be favorable to concentrating the cooling lubricating oil who sprays on the screw surface among the recovery production screw process, be convenient for technical staff carries out reuse to the cooling lubricating oil who retrieves.

One side of the discharge port 3, which is far away from the screening box 1, is provided with a rectangular material receiving box 12. A rectangular hopper 13 is fixedly welded on the side wall of the screening box 1 where the discharge port 3 is located, and the hopper 13 is communicated with the discharge port 3; one end of the hopper 13, which is far away from the discharge port 3, is obliquely arranged towards the direction of the material receiving box 12, and one end of the hopper 13, which is far away from the discharge port 3, is abutted against the side wall of the material receiving box 12, which is close to the screening box 1; so set up, be favorable to preventing that the screw from falling into the in-process of receiving in the workbin 12 from discharge gate 3 and receiving the gap between workbin 12 and drop to ground through screening case 1, promoted the collection efficiency to the screw of accomplishing the clear bits operation.

The rectangular temporary storage tray 14 is arranged at one end, close to the hopper 13, in the material receiving box 12, the rectangular counterweight block 15 is fixedly arranged at one end, far away from the hopper 13, of the temporary storage tray 14, the cylindrical rotating shaft 16 is fixedly welded at one end, close to the hopper 13, of the counterweight block 15 of the temporary storage tray 14, the rotating shaft 16 is arranged between two opposite side walls of the material receiving box 12 in a penetrating mode, and the temporary storage tray 14 can rotate around the rotating shaft 16. The end of the temporary storage tray 14 far from the counterweight 15 is abutted against the end of the hopper 13 far from the discharge port 3, so that the temporary storage tray 14 can be kept in a horizontal state when not rotating. A rectangular material collecting box 17 is fixedly arranged in the material receiving box 12, and the material collecting box 17 is positioned at one end of the temporary storage disk 14 far away from the material hopper 13. When the screw forming machine processes screws, if a certain batch of screws are unqualified due to some reasons, the unqualified screws fall into the receiving box 12 and are mixed with qualified screws, and the qualified screws and the unqualified screws which are mixed together are difficult to sort and distinguish, all the screws in the receiving box 12 are discarded, and the production cost is increased. By arranging the temporary storage disk 14 and the balancing weight 15, when the screws which finish the scrap cleaning operation roll into the material receiving box 12 through the hopper 13, the screws firstly fall into the temporary storage disk 14, when the total mass of the screws collected in the temporary storage disk 14 is greater than that of the balancing weight 15, one end of the temporary storage disk 14 far away from the balancing weight 15 rotates towards the direction far away from the hopper 13, and at the moment, the screws in the temporary storage disk 14 slide into the material collecting box 17 through the action of gravity; when the technician finds that the screw in the temporary storage disk 14 has unqualified products, the screw forming machine can be closed, the unqualified products in the temporary storage disk 14 are discarded, and more qualified product screws in the material collecting box 17 are prevented from being wasted.

A plurality of circular oil control holes 18 are uniformly and vertically arranged on the bottom side wall of the material collecting box 17, and redundant lubricating oil adhered to the surface of the screw in the material collecting box 17 can pass through the oil control holes 18 and drip to the bottom side wall of the material collecting box 12. The screen 19 is arranged in the material receiving box 12, the screen 19 is positioned at one end of the material collecting box 17 far away from the temporary storage disk 14, and the screen 19 can filter lubricating oil drops dropping to the bottom side wall of the material receiving box 12 through the oil control hole 18, so that the cleanliness of the lubricating oil collected in the material receiving box 12 is improved. The side wall of the bottom of the material receiving box 12 is slidably provided with a rectangular oil receiving drawer box 20, and the oil receiving drawer box 20 is arranged in the material receiving box 12 in a penetrating manner. Lubricating oil adhered to the surfaces of the screws in the material box can pass through the screen 19 through the oil control holes 18 and drop into the oil drawer box 20, and when the lubricating oil in the oil drawer box 20 needs to be recycled, the oil drawer box 20 can be taken out from the material receiving box 12, and the oil in the oil drawer box 20 is additionally processed. The method is beneficial to collecting the redundant lubricating oil adhered to the surface of the finished screw, and simplifies the operation of recovering the redundant lubricating oil on the surface of the screw.

The implementation principle of the embodiment is as follows: the finished product screw of accomplishing processing passes through feed inlet 2 and gets into screening case 1 in, and the roller 4 in the screening case 1 is with the screw bearing on the 4 lateral walls of roller, simultaneously, starts actuating mechanism 7 on the screening case 1, and actuating mechanism 7 drives the rotation of roller 4, and the screw of bearing on the 4 lateral walls of roller rolls along with the rotation of roller 4 and towards the direction of discharge gate 3 to drop to receiving in the workbin 12 through discharge gate 3. During the process of rolling the screw on the roller shaft 4, the brush part 52 of the elastic brush piece 5 on the roller shaft 4 can sweep the chips on the surface of the screw, and the swept chips can fall onto the bottom side wall of the screening box 1 through the gap between the adjacent roller shafts 4. So set up, be favorable to getting rid of the piece at the in-process of collecting the finished product screw, promoted the degree of production automation, and elasticity brush piece 5 is favorable to making the screw not damaged when cleaing away the piece. The elastic brush pieces 5 which are arranged in a staggered mode one by one ensure that the screws adhered with the chippings can be fully contacted with the elastic brush pieces 5, and the chipping removal rate is further improved.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a sieving mechanism of screw make-up machine, includes screening case (1), its characterized in that: a plurality of roll shafts (4) are rotatably arranged in the screening box (1), intervals exist among the roll shafts (4), a plurality of elastic brush pieces (5) are arranged on the side walls of the roll shafts (4), and a driving mechanism (7) for driving the roll shafts (4) to rotate is arranged on the outer side wall of the screening box (1); the screening box (1) is provided with feed inlet (2) and discharge gate (3) on the double-phase relative lateral wall along the direction of delivery of roller (4), the one end that screening box (1) is close to discharge gate (3) is provided with receipts workbin (12).

2. The screening apparatus of a screw forming machine according to claim 1, wherein: and the distance between one end of the roller shaft (4) close to the bottom side wall of the screening box (1) and the bottom side wall of the screening box (1) is distributed in a gradient manner.

3. The screening apparatus of a screw forming machine according to claim 1, wherein: elastic brush piece (5) are including fixed part (51) and brush hair portion (52), fixed part (51) and the lateral wall fixed connection of roller (4), brush hair portion (52) set up the one end of keeping away from roller (4) in fixed part (51), and elastic brush piece (5) on adjacent roller (4) crisscross the setting each other.

4. The screening apparatus of a screw forming machine according to claim 1, wherein: be provided with fluted disc (8) in screening case (1), fluted disc (8) set up in one side that roller (4) are close to screening case (1) bottom, just the lateral wall and the inside wall butt of screening case (1) of fluted disc (8), fluted disc (8) are by fixed being provided with the clastic magnetic part (10) that are used for adsorbing screw surface adhesion of the one end of keeping away from roller (4).

5. The screening apparatus of a screw forming machine according to claim 4, wherein: be provided with a plurality of slotted holes (9) on frid (8), just the one end that feed inlet (2) were kept away from in screening case (1) is provided with collection oil box (11), collection oil box (11) are worn to establish in screening case (1), just collection oil box (11) and screening case (1) sliding connection.

6. The screening apparatus of a screw forming machine according to claim 1, wherein: a hopper (13) is fixedly arranged on the outer side wall, close to the discharge port, of the screening box (1), one end, far away from the screening box (1), of the hopper (13) is obliquely arranged towards the material receiving box (12), and one end, far away from the screening box (1), of the hopper (13) is abutted to one side wall, close to the screening box (1), of the material receiving box (12); the material receiving box is characterized in that a temporary storage disc (14) is arranged at one end, close to the hopper (13), in the material receiving box (12), one end, far away from the hopper (13), of the temporary storage disc (14) is fixedly provided with a balancing weight (15), one side, close to the hopper (13), of the balancing weight (15) is provided with a rotating shaft (16), the rotating shaft (16) penetrates through two opposite side walls of the material receiving box (12), the temporary storage disc (14) can rotate around the axial direction of the rotating shaft (16), and one end, far away from the balancing weight (15), of the temporary storage disc (14) is abutted to one end, far away from the discharge hole (3), of the hopper (13).

7. The screening apparatus of a screw forming machine according to claim 1, wherein: a material collecting box (17) is arranged in the material collecting box (12), and a plurality of oil control holes (18) are formed in the material collecting box (17); the screen (19) is arranged in the material collecting box (12), and the screen (19) is arranged at one end, close to the bottom side wall of the material collecting box (12), of the material collecting box (17).

8. The screening apparatus of a screw forming machine according to claim 7, wherein: an oil receiving drawer box (20) penetrates through the material receiving box (12), and the oil receiving drawer box (20) is connected with the material receiving box (12) in a sliding mode.