A chip removal device for machining of hardware bolts

Abstract

The utility model relates to bolt production technical field especially is a kind of chip removal device for hardware bolt processing, including front frame plate and rear frame plate, front frame plate inner side is fixedly connected with spherical roller thrust bearing, spherical roller thrust bearing side is fixedly connected with chip removal subassembly, chip removal subassembly includes cylinder drum, through-hole is set up in cylinder drum outside, and spiral blade is welded in cylinder drum inner side, knock subassembly is welded in spiral blade side, cylinder drum inner side is fixedly connected with limit rod, and flexible baffle is bonded in limit rod side, and plug rod is slidably arranged in limit rod inner side, and scraper is fixedly connected in plug rod one end, knock subassembly includes fixed base, and screw is threadedly connected in fixed base inner side, in the utility model, in the process that bolt tumbles, both can enhance the scraping effect of bolt surface iron filings, and can trigger vibration to form high-frequency impact on the iron filings stuck in through-hole, make it shake off from sieve hole, avoid the jamming problem caused by iron filings extrusion accumulation.

Description

Technical Field

[0001] This utility model relates to the field of bolt manufacturing technology, specifically to a chip removal device for hardware bolt processing. Background Technology

[0002] Bolt production is a process of manufacturing fasteners using wire as raw material through a series of cold and hot working processes. The main process includes pickling and rust removal of wire rod steel, wire drawing and diameter reduction, upsetting, thread rolling and tapping, tempering and heat treatment, surface electroplating or blackening, and then dimensional inspection, tensile and torque testing, and rust-proof packaging to produce bolts with hexagonal heads or internal hexagonal heads, or full and partial threads. In critical cold working processes such as cold heading and tapping of bolts, strong pressure and shear force will cause plastic deformation of the metal, which will inevitably cause tiny metal chips or burrs to adhere to the bolt. The residual iron chips will directly affect the effect of subsequent surface treatments such as electroplating or blackening, resulting in uneven plating and poor adhesion. The iron chips may also be embedded in the thread profile or attached to the bolt head, which will cause thread jamming during assembly. To remove the iron filings attached to the bolts, a drum-type iron filings separator is sometimes used to screen the bolts and iron filings. During operation, the bolts and iron filings to be separated are put into the inside of the drum through the feed port. As the drum rotates, the bolts tumble and move inside the drum, and the iron filings on the surface of the bolts are shaken off and fall through the screen holes on the screen. They are collected in the collection device below and then cleaned up. However, since iron filings are mostly irregular in shape, they are easy to get stuck in the screen holes during the screening process. Especially when the size of the iron filings is close to that of the screen holes, the iron filings will be continuously squeezed and accumulated as the drum rotates, gradually causing the screen holes to become blocked. This not only reduces the screening efficiency, but may also cause the iron filings that have been shaken off to be discharged with the bolts due to the blockage of the screen holes, resulting in secondary pollution. Therefore, a chip removal device for hardware bolt processing is proposed to address the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide a chip removal device for metal bolt processing to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A chip removal device for metal bolt processing includes a front frame plate and a rear frame plate. A spherical roller thrust bearing is fixedly connected to the inner side of the front frame plate. A chip removal assembly is fixedly connected to one side of the spherical roller thrust bearing. The chip removal assembly includes a roller with a through hole on its outer side. A helical blade is welded to the inner side of the roller. A striking assembly is welded to one side of the helical blade. A limit rod is fixedly connected to the inner side of the roller. A flexible stop strip is adhered to one side of the limit rod. An insert rod is slidably disposed on the inner side of the limit rod. A scraper is fixedly connected to one end of the insert rod. The striking assembly includes a fixed seat with a screw threadedly connected to the inner side of the fixed seat. A limit tube is threadedly connected to one end of the screw. A locking block is welded to the upper end of the limit tube. A tension spring is fixedly connected to the inner side of the limit tube. An elastic rod is fixedly connected to the lower end of the tension spring. A buffer strip is fixedly connected to the inner side of the limit tube. A counterweight ball is fixedly connected to one end of the elastic rod.

[0005] As a further optimization of this utility model, the following features are provided: a servo motor is fixedly mounted on one side of the front frame plate by bolts; a control box is fixedly mounted on one side of the front frame plate; a gear ring is fixedly connected to the outer side of the spherical roller thrust bearing; the gear ring is connected to the gear via a chain; the gear is fixed to the main shaft of the servo motor; there is a gap between the outer side of the chip removal assembly and the circular hole opened on the inner side of the rear frame plate; a support bearing rod is fixedly installed through the inner side of the rear frame plate; and the outer side of the support bearing rod is in contact with the outer side of the chip removal assembly.

[0006] As a further optimization of this utility model, the lateral projections of the roller and the spherical roller thrust bearing are both annular, the vertical projection of the roller consists of two rectangles, and the through hole is hexagonal in shape.

[0007] As a further optimization of this utility model, the side of the limiting rod away from the flexible baffle is arc-shaped, the side of the flexible baffle is in contact with the scraper rod, the two ends of the limiting rod are fixed to the spiral blade, and the upper and lower ends of the scraper rod respectively abut against the two limiting rods.

[0008] As a further optimization of this utility model, the scraper bar is arc-shaped, the width ratio of the side of the scraper bar away from the flexible baffle to the side of the scraper bar close to the flexible baffle is 1:2, and the side of the scraper bar away from the flexible baffle is in contact with the inner wall of the roller.

[0009] As a further optimization of this utility model, the upper end of the limiting tube is in contact with the fixed seat, one side of the locking block is in contact with the outer side of the fixed seat, the projection of the limiting tube in the vertical direction is elliptical, and the height of the tension spring is half the height of the limiting tube.

[0010] As a further optimization of this utility model, the buffer strip is designed with one side in an arc shape, the projection of the buffer strip in the vertical direction is semi-circular, and the length of the elastic rod is the sum of the diameter of the counterweight ball and the height of the limiting tube.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the chip removal component enhances the scraping effect on the surface of the bolt during the bolt rolling process, and triggers vibration to create a high-frequency impact on the iron chips stuck in the through hole, causing them to fall out of the screen hole and avoiding the blockage problem caused by the accumulation of iron chips. In addition, the scraper moves relative to the inner wall when the drum vibrates, which can further scrape off the residual iron chips. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall exploded structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the chip removal component of this utility model; Figure 4 This is a schematic diagram of the installation position structure of the flexible baffle of this utility model; Figure 5 for Figure 4 An explosion diagram; Figure 6 This is a schematic diagram of the striking component structure of this utility model; Figure 7 This is an exploded structural diagram of the striking component of this utility model.

[0013] In the diagram: 1. Front frame plate; 2. Servo motor; 3. Control box; 4. Spherical roller thrust bearing; 5. Gear ring; 6. Gear; 7. Chip removal assembly; 71. Roller; 72. Through hole; 73. Spiral blade; 74. Impact assembly; 741. Fixing base; 742. Screw; 743. Limiting tube; 744. Locking block; 745. Tension spring; 746. Elastic rod; 747. Buffer strip; 748. Counterweight ball; 75. Limiting rod; 76. Flexible stop bar; 77. Insert rod; 78. Scraper rod; 8. Rear frame plate; 9. Support bearing rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-7 This utility model provides a technical solution: A chip removal device for metal bolt processing includes a front frame plate 1 and a rear frame plate 8. A spherical roller thrust bearing 4 is fixedly connected to the inner side of the front frame plate 1, and a chip removal assembly 7 is fixedly connected to one side of the spherical roller thrust bearing 4. The chip removal assembly 7 includes a roller 71, a through hole 72 on the outer side of the roller 71, a helical blade 73 welded to the inner side of the roller 71, a striking component 74 welded to one side of the helical blade 73, a limit rod 75 fixedly connected to the inner side of the roller 71, a flexible stop strip 76 adhered to one side of the limit rod 75, and the limit rod 75 is slidably disposed on the inner side. There is an insertion rod 77, one end of which is fixedly connected to a scraper 78. The striking component 74 includes a fixed base 741, with a screw 742 threadedly connected to the inner side of the fixed base 741. One end of the screw 742 is threadedly connected to a limit tube 743. A locking block 744 is welded to the upper end of the limit tube 743. A tension spring 745 is fixedly connected to the inner side of the limit tube 743. An elastic rod 746 is fixedly connected to the lower end of the tension spring 745. A buffer strip 747 is fixedly connected to the inner side of the limit tube 743. A counterweight ball 748 is fixedly connected to one end of the elastic rod 746.

[0017] As a further implementation of this solution, a servo motor 2 is fixedly mounted on one side of the front frame plate 1 with bolts, and a control box 3 is fixedly mounted on the other side of the front frame plate 1. A gear ring 5 is fixedly connected to the outer side of the spherical roller thrust bearing 4. The gear ring 5 is connected to the gear 6 via a chain. The gear 6 is fixed to the main shaft of the servo motor 2. There is a gap between the outer side of the chip removal assembly 7 and the round hole opened on the inner side of the rear frame plate 8. A support bearing rod 9 is fixedly installed through the inner side of the rear frame plate 8. The outer side of the support bearing rod 9 is in contact with the outer side of the chip removal assembly 7. The servo motor 2 is fixed to the front frame plate 1 with bolts. Combined with the closed-loop control of the control box 3, the rotation speed of the gear ring 5 can be precisely adjusted to adapt to different working conditions. The outer side of the support bearing rod 9 is in contact with the chip removal assembly 7 to form a sliding guide rail, which suppresses radial runout during high-speed rotation. The design of the gap between the outer side of the chip removal assembly 7 and the round hole opened on the inner side of the rear frame plate 8 can reduce the direct friction between the chip removal assembly 7 and the rear frame plate 8, making the rotation of the chip removal assembly 7 smoother.

[0018] As a further implementation of this solution, the lateral projections of both the roller 71 and the spherical roller thrust bearing 4 are annular, and the vertical projection of the roller 71 consists of two rectangles. The through hole 72 is hexagonal in shape. The annular lateral projections of both the roller 71 and the spherical roller thrust bearing 4 facilitate the insertion of bolts into the surface to be cleaned. The shape design of the roller 71 makes it difficult for bolts to fall out from one end, but they can fall out from the other end. The shape of the through hole 72 gives its opening in the roller 71 more edges, thereby better scraping away iron filings from the bolt surface.

[0019] As a further implementation of this solution, the side of the limiting rod 75 away from the flexible baffle 76 is arc-shaped, one side of the flexible baffle 76 is in contact with the scraper rod 78, both ends of the limiting rod 75 are fixed to the spiral blade 73, and the upper and lower ends of the scraper rod 78 respectively abut against the two limiting rods 75. The scraper rod 78 is arc-shaped, and the ratio of the width of the side of the scraper rod 78 away from the flexible baffle 76 to the width of the side closer to the flexible baffle 76 is 1:2. The side of the scraper rod 78 away from the flexible baffle 76 is in contact with the inner wall of the roller 71, and the side of the limiting rod 75 away from the flexible baffle 76 is arc-shaped. The design reduces the obstruction to the rolling and sliding of iron filings in the drum 71, thereby collecting iron filings that do not fall from the through hole 72 between multiple scrapers 78. The flexible baffle 76 prevents iron filings from entering the groove opened in the limiting rod 75 during this process. The fixed arrangement of the two ends of the limiting rod 75 with the spiral blade 73 provides support for the spiral blade 73. The shape design of the scraper 78 allows it to better move relative to the drum 71 when the drum 71 vibrates, while also better scraping away the iron filings adhering to the inner wall of the drum 71.

[0020] As a further implementation of this solution, the upper end of the limiting tube 743 is fitted with the fixed seat 741, one side of the locking block 744 is fitted with the outer side of the fixed seat 741, the vertical projection of the limiting tube 743 is elliptical, the height of the tension spring 745 is half the height of the limiting tube 743, one side of the buffer strip 747 is arc-shaped, the vertical projection of the buffer strip 747 is semi-circular, the length of the elastic rod 746 is the sum of the diameter of the counterweight ball 748 and the height of the limiting tube 743, the limiting tube 743, together with the locking block 744, forms a fast and stable connection with the fixed seat 741, and the shape design of the limiting tube 743... The deformation direction of the tension spring 745 and the elastic rod 746 is restricted, allowing them to better ensure that the counterweight ball 748 falls toward the predetermined position when the helical blade 73 rotates. The height of the tension spring 745 is half the height of the limiting tube 743, so that it is completely inside the limiting tube 743, which to some extent prevents fine debris from entering its wire diameter gap. The arc design on one side of the buffer strip 747 allows the kinetic energy of the counterweight ball 748 to be absorbed first, and also prevents the elastic rod 746 from being scratched by direct contact with the edge of the limiting tube 743. The shape design of the buffer strip 747 allows for a wider range of protection angles.

[0021] Working process: When the device is in use, the bolts to be processed are fed into the drum 71 through the spherical roller thrust bearing 4. A servo motor 2 is connected via wires to supply power to the servo motor 2. Then, the servo motor 2 is started by the control box 3 located on one side of the front frame plate 1. When the servo motor 2 starts, its main shaft drives the gear 6 to rotate. When the gear 6 rotates, it drives the gear ring 5 and the spherical roller thrust bearing 4 fixed to the gear ring 5 to rotate via a chain. Since part of the spherical roller thrust bearing 4 is fixed in the front frame plate 1, and the other part is fixed to the gear ring 5 and the chip removal assembly 7, the rotation of the gear 6 can be transmitted through the gear ring 5 and the spherical roller thrust bearing 71. A portion of the thrust bearing 4 stably drives the chip removal assembly 7 to rotate. When the chip removal assembly 7 rotates, the drum 71 drives the spiral blades 73 welded and fixed to the inner side of the drum 71 to rotate. The spiral arrangement of the spiral blades 73 pushes the bolts thrown into the drum 71 to move. At the same time, the through holes 72 in the drum 71 increase the friction between the bolts and the inner wall of the drum 71. While scraping off some iron filings from the surface of the bolts through friction, the bolts are also thrown up as the drum 71 rotates. When the bolts fall, they collide with the drum 71, shaking off the iron filings attached to the surface. As the spiral blades 73 rotate, the striking assembly 74 will also be activated. When the striking assembly 74 rotates a certain angle, the counterweight ball 748, under the action of gravity, causes the elastic rod 746 and the tension spring 745 fixed to the elastic rod 746 to bend until they contact the buffer strip 747. The special shape of the limiting tube 743 limits the bending angle of the elastic rod 746, thus allowing the counterweight ball 748 to fall towards the predetermined position more effectively. When the counterweight ball 748 returns to its original position, the elastic potential energy generated by the deformation of the tension spring 745 and the elastic rod 746, as well as the gravitational potential energy of the counterweight ball 748, are released, causing the counterweight ball 748 to quickly strike the spiral blade 73. When the spiral blade 73 vibrates, it drives the roller. The vibration generated by the roller 71 allows the iron filings in the through hole 72 to be shaken off better. The setting of the limiting rod 75 supports the spiral blade 73 and reduces the deformation of the limiting rod 75. The arc-shaped setting on one side of the limiting rod 75 allows the iron filings entering the through hole 72 to slide into the gap between the multiple scrapers 78. When the roller 71 vibrates and the scrapers 78 in the limiting rod 75 produce a certain relative displacement, the scrapers 78 can scrape the inner wall of the roller 71 to a certain extent, pushing these iron filings into the through hole 72 and removing them. The setting of the flexible baffle 76 can prevent iron filings from entering the groove opened by the limiting rod 75 and hinder the sliding of the insertion rod 77 in the groove opened by the limiting rod 75.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chip removal device for machining hardware bolts, comprising a front frame plate (1) and a rear frame plate (8), characterized in that: A spherical roller thrust bearing (4) is fixedly connected to the inner side of the front frame plate (1), and a chip removal assembly (7) is fixedly connected to one side of the spherical roller thrust bearing (4). The chip removal assembly (7) includes a roller (71), a through hole (72) is provided on the outer side of the roller (71), a spiral blade (73) is welded on the inner side of the roller (71), a striking assembly (74) is welded on one side of the spiral blade (73), a limit rod (75) is fixedly connected to the inner side of the roller (71), a flexible baffle (76) is glued to one side of the limit rod (75), an insert rod (77) is slidably provided on the inner side of the limit rod (75), and a scraper (78) is fixedly connected to one end of the insert rod (77). The striking assembly (74) includes a fixed base (741), a screw (742) is threadedly connected to the inner side of the fixed base (741), a limit tube (743) is threadedly connected to one end of the screw (742), a locking block (744) is welded to the upper end of the limit tube (743), a tension spring (745) is fixedly connected to the inner side of the limit tube (743), an elastic rod (746) is fixedly connected to the lower end of the tension spring (745), a buffer strip (747) is fixedly connected to the inner side of the limit tube (743), and a counterweight ball (748) is fixedly connected to one end of the elastic rod (746).

2. The chip removal device for hardware bolt processing according to claim 1, characterized in that: A servo motor (2) is fixedly installed on one side of the front frame plate (1) by bolts. A control box (3) is fixedly installed on one side of the front frame plate (1). A gear ring (5) is fixedly connected to the outside of the spherical roller thrust bearing (4). The gear ring (5) is connected to the gear (6) by a chain. The gear (6) is fixed to the main shaft of the servo motor (2). There is a gap between the outer side of the chip removal assembly (7) and the round hole opened on the inner side of the rear frame plate (8). A support bearing rod (9) is fixedly installed through the inner side of the rear frame plate (8). The outer side of the support bearing rod (9) is in contact with the outer side of the chip removal assembly (7).

3. The chip removal device for hardware bolt processing according to claim 1, characterized in that: The lateral projections of the roller (71) and the spherical roller thrust bearing (4) are both annular. The vertical projection of the roller (71) consists of two rectangles. The through hole (72) is hexagonal in shape.

4. The chip removal device for hardware bolt processing according to claim 1, characterized in that: The side of the limiting rod (75) away from the flexible baffle (76) is arc-shaped. One side of the flexible baffle (76) is in contact with the scraper (78). The two ends of the limiting rod (75) are fixed with the spiral blade (73). The upper and lower ends of the scraper (78) respectively abut against the two limiting rods (75).

5. A chip removal device for machining hardware bolts according to claim 1, characterized in that: The scraper (78) is arc-shaped. The width ratio of the side of the scraper (78) away from the flexible baffle (76) to the side close to the flexible baffle (76) is 1:

2. The side of the scraper (78) away from the flexible baffle (76) is in contact with the inner wall of the roller (71).

6. The chip removal device for hardware bolt processing according to claim 1, characterized in that: The upper end of the limiting tube (743) is in contact with the fixed seat (741), one side of the card block (744) is in contact with the outside of the fixed seat (741), the projection of the limiting tube (743) in the vertical direction is elliptical, and the height of the tension spring (745) is half the height of the limiting tube (743).

7. The chip removal device for machining hardware bolts according to claim 1, characterized in that: The buffer strip (747) is arc-shaped on one side, and the projection of the buffer strip (747) in the vertical direction is semi-circular. The length of the elastic rod (746) is the sum of the diameter of the counterweight ball (748) and the height of the limiting tube (743).

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