Steel ball rapid forming rotary cutter

Abstract

The invention relates to a steel ball rapid forming rotary cutter which comprises a rack (1), a left supporting swing arm assembly (2) and a right supporting swing arm assembly (2) are arranged on the rack (1), rollers (3) are arranged on the supporting swing arm assemblies (2), the left roller (3) and the right roller (3) are arranged in parallel, and a lower guide plate assembly (4) is arranged between the left roller (3) and the right roller (3). According to the steel ball rapid forming rotary cutter, the appearance quality of final steel balls can be effectively guaranteed, and the production efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to a quick forming rotary cutting machine for steel balls and belongs to the technical field of steel ball production equipment. BACKGROUND

[0002] Steel balls are widely used in the grinding work of ball mills as the grinding medium of the ball mills. The ball mill is the main equipment in the beneficiation process and is widely used in the grinding process of beneficiation plants. China is a large country in ore mining, and a large number of ball mills are in use, which requires a large number of steel balls. Steel balls are consumable parts, and the annual consumption is large. Forged steel balls have long service life and are widely used. Hot-rolled steel balls are widely used because of their inherent stable quality, dense metallographic structure, fine grains, non-deformation, good wear resistance and many other advantages.

[0003] The conventional hot-rolled steel ball production process generally adopts the black metallurgy industry standard (YB / T091-2005) for professional production of various specifications of hot-rolled ball mill steel balls. The diameter of the steel ball ranges from 25mm to 125mm. The blank for rolling the ball mill steel ball is a hot-rolled round steel bar with various chemical compositions, and the diameter is equal to the nominal diameter of the steel ball. The conventional hot-rolled steel ball main The production process is as follows: Step one, after the round steel bar is inspected, it is cut into steel ball blanks according to the fixed length; Step two, the steel ball blank is heated to an appropriate temperature in a continuous heating furnace before rolling; Step three, the red-hot steel blank is sent into the hot rolling mill between two rollers with special spiral grooves Rotates forward and is continuously rolled into a steel ball; Step four, the red-hot steel ball after rolling is immediately sent into a heat treatment equipment for quenching-tempering heat treatment, so that the steel ball Obtains high and uniform hardness; Step five, the qualified products are sent to the finished product warehouse, packaged and sent to the customers.

[0004] At present, the hot rolling process of step three is generally carried out by a steel ball skew rolling mill, which adopts a skew rolling process, that is, two straight and non-parallel rollers are crossed to work, the rollers rotate synchronously around their own axes, and the workpiece is rotated and advanced by the contact friction force, gradually becoming spherical, the connecting part between the spheres gradually thins, and finally breaks to obtain steel balls. However, the above-mentioned skew rolling mill obtains steel balls by rotating and cutting the bar through two cross-arranged rollers, which has low production efficiency and cannot guarantee the appearance quality of the final steel balls; in addition, the above-mentioned skew rolling mill needs to use upper and lower guide plates to guide and clamp the bar, and the upper and lower guide plates are severely worn during production, and the guide plates often need to be replaced regularly, greatly increasing the maintenance and replacement cost of the equipment in the later period. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a steel ball rapid forming rotary cutting machine which can effectively guarantee the appearance quality of the final steel ball and greatly improve the production efficiency.

[0006] The technical scheme adopted by the present application to solve the above problems is: a steel ball rapid forming rotary cutting machine, which comprises a rack, the rack is provided with two groups of support swing arm assemblies on the left and right sides, the support swing arm assemblies are provided with rollers, the two rollers are arranged in parallel, and a lower guide plate assembly is arranged between the two rollers.

[0007] Optionally, the rack comprises a chassis, the top of the chassis is provided with an upper cover, the left and right sides of the chassis are hingedly provided with locking arms through pins, the upper cover is provided with a clamping groove at the corresponding position of the locking arm, the locking arm is arranged in the clamping groove, a locking wedge groove is formed in the upper part of the locking arm, and a locking wedge block is arranged in the locking wedge groove.

[0008] Optionally, the support swing arm assembly comprises two swing arms arranged opposite to each other, the upper part of the swing arm is hingedly connected with the rack through a first cam shaft, the middle part of the swing arm is provided with a bearing seat, the roller is supported between the two bearing seats, and an adjusting pull rod assembly is connected and arranged between the lower ends of the two swing arms.

[0009] Optionally, a self-aligning bearing is arranged in the bearing seat; and a spherical bearing is arranged between the first cam shaft and the swing arm.

[0010] Optionally, a first adjusting tooth disc is arranged at the outer end of the first cam shaft.

[0011] Optionally, the roller comprises a roller body, roller necks are arranged on the left and right sides of the roller body, a spiral groove is arranged on the roller body, and the spiral groove comprises a material biting and distributing section, a forming and cutting section and a whole diameter section arranged in sequence from rear to front.

[0012] Optionally, the adjusting pull rod assembly comprises an intermediate connecting rod, adjusting bolts are arranged on the front and back sides of the intermediate connecting rod, flange covers are arranged at the outer ends of the adjusting bolts, first ball grooves are arranged on the outer sides of the flange covers, second ball grooves are arranged on the swing arms at positions corresponding to the first ball grooves, and a rolling ball is arranged between the first ball grooves and the second ball grooves.

[0013] Optionally, the outer sides of the swing arms are provided with roll deviation correction mechanisms; the roll deviation correction mechanisms comprise front and back second camshafts, the positions of the front and back second camshafts correspond to the positions of the front and back swing arms respectively, and second adjusting toothed discs are arranged at the outer ends of the second camshafts.

[0014] Optionally, the swing arms are provided with baffles at the cam positions of the second camshafts, and the cam positions of the second camshafts abut against the baffles.

[0015] Optionally, intermediate air cylinders are arranged between the left and right groups of supporting swing arm assemblies; and transverse adjusting bolts are arranged on the outer sides of the supporting swing arm assemblies.

[0016] Compared with the prior art, the present application has the following advantages: 1. The present application comprises two parallel rollers, and the rollers are sequentially arranged from back to front as a bite distribution section, a forming and cutting section and a whole diameter section, which can effectively ensure the appearance quality of the final steel ball and greatly improve the production efficiency. 2. The present application cancels the upper guide plate, which greatly reduces the production manufacturing cost and the subsequent maintenance and replacement cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of a steel ball rapid forming rotary cutting machine.

[0018] Figure 2 It is Figure 1 an A-A sectional view.

[0019] Figure 3 It is Figure 1 a B-B sectional view.

[0020] Figure 4 It is Figure 1 a top view.

[0021] Figure 5 It is Figure 3 a structural schematic view of a middle roller body.

[0022] Among them: frame 1 bottom frame 1.1 upper cover 1.2 pin shaft 1.3 locking arm 1.4 card slot 1.5 Lock wedge groove 1.6 Lock wedge block 1.7 Support swing arm assembly 2 Swing arm 2.1 First camshaft 2.2 Bearing seat 2.3 Self-aligning bearing 2.4 First adjusting toothed disc 2.5 Spherical bearing 2.6 Second ball groove 2.7 Baffle plate 2.8 Roller 3 Roller body 3.1 Roller neck 3.2 Helical groove 3.3 Bite distribution section 3.3.1 Forming cutting section 3.3.2 Whole diameter section 3.3.3 Lower guide plate assembly 4 Adjusting pull rod assembly 5 Intermediate connecting rod 5.1 Adjusting bolt 5.2 Flange cover 5.3 First ball groove 5.4 Rolling ball 5.5 Roller deviation rectifying mechanism 6 Second camshaft 6.1 Second adjusting toothed disc 6.2 Intermediate cylinder 7 Transverse adjusting bolt 8 Feeding mechanism 9 Discharging mechanism 10 DETAILED DESCRIPTION

[0023] The application will be further described in detail below with reference to the drawings.

[0024] Referring to Figures 1-4 The application relates to a steel ball rapid forming rotary cutting machine, which comprises a rack 1, left and right groups of support swing arm assemblies 2 are arranged on the rack 1, rollers 3 are arranged on the support swing arm assemblies 2, the left and right rollers 3 are arranged in parallel, and a lower guide plate assembly 4 is arranged between the left and right rollers 3. The rack 1 comprises a base frame 1.1, and an upper cover 1.2 is arranged on the top of the base frame 1.1. The left and right sides of the chassis 1.1 are hingedly provided with locking arms 1.4 through pin shafts 1.3, the upper cover 1.2 is provided with clamping grooves 1.5 at the corresponding positions of the locking arms 1.4, the locking arms 1.4 are arranged in the clamping grooves 1.5, the upper parts of the locking arms 1.4 are provided with locking wedge grooves 1.6, and the locking wedge grooves 1.6 are provided with locking wedge blocks 1.7; The support swing arm assembly 2 comprises two swing arms 2.1 arranged opposite to each other, the upper parts of the swing arms 2.1 are hingedly connected with the rack 1 through first cam shafts 2.2, the middle parts of the swing arms 2.1 are provided with bearing seats 2.3, and the roller 3 is supported between the front and rear bearing seats 2.3, and an adjusting pull rod assembly 5 is arranged between the lower ends of the front and rear swing arms 2.1; The bearing seat 2.3 is provided with a self-aligning bearing 2.4; The outer end of the first cam shaft 2.2 is provided with a first adjusting tooth disc 2.5; The first cam shaft 2.2 and the swing arm 2.1 are provided with a spherical bearing 2.6; The roller 3 comprises a roller body 3.1, the roller body 3.1 is provided with roller necks 3.2 on the front and rear sides, the roller body 3.1 is provided with spiral grooves 3.3, and the spiral grooves 3.3 comprise a bite distribution section 3.3.1, a forming and cutting section 3.3.2 and a whole diameter section 3.3.3 arranged in sequence from back to front; The lower guide plate assembly 4 comprises a base, the base is provided with a guide plate seat, the top of the guide plate seat is provided with a guide plate groove, and the guide plate groove is provided with a lower guide plate; The adjusting pull rod assembly 5 comprises an intermediate connecting rod 5.1, the front and rear sides of the intermediate connecting rod 5.1 are provided with adjusting bolts 5.2, the outer ends of the adjusting bolts 5.2 are provided with flange covers 5.3, the outer sides of the flange covers 5.3 are provided with first ball grooves 5.4, the swing arms 2.1 are provided with second ball grooves 2.7 at the corresponding positions of the first ball grooves 5.4, and the first ball grooves 5.4 and the second ball grooves 2.7 are provided with a rolling ball 5.5; The flange cover 5.3 is connected with the swing arm 2.1 through a bolt; The outer side of the swing arm 2.1 is provided with a roller deviation rectifying mechanism 6; The roller deviation rectifying mechanism 6 comprises two second cam shafts 6.1 arranged opposite to each other, the positions of the two second cam shafts 6.1 correspond to the positions of the front and rear swing arms 2.1 respectively, and the outer ends of the second cam shafts 6.1 are provided with second adjusting tooth discs 6.2; The swing arms 2.1 are provided with baffles 2.8 at the cam positions of the second cam shafts 6.1, and the cam parts of the second cam shafts 6.1 abut against the baffles 2.8; Intermediate air cylinders 7 are arranged between the left and right groups of support swing arm assemblies 2; The support swing arm assembly 2 is provided with a transverse adjusting bolt 8 outside, the inner end of the transverse adjusting bolt 8 abuts against the bearing seat 2.3, and the left and right positions of the roller can be adjusted through the transverse adjusting bolt; The machine frame 1 is provided with a feeding mechanism 9 and a discharging mechanism 10 on the front and rear sides respectively.

[0025] Working principle: The bar is conveyed forward from the feeding mechanism to between the left and right rollers, the bite distribution section cuts into the round steel bar by using the gradually widened and gradually raised roller ring, and the bar is gradually cut into spherical billets with equal volume but different lengths, at this time, the spherical billets have not been separated from the bar; the groove wall of the spiral groove of the forming and cutting section is higher than the height of the groove wall of the spiral groove at the bite distribution section, the cross section of the groove bottom of the spiral groove of the forming and cutting section is semicircular, the forming and cutting section uses the groove wall of the spiral groove to extrude the spherical billets into spherical shape and separate the spherical billets from the bar; the groove wall of the spiral groove of the whole diameter section is higher than the height of the groove wall of the spiral groove at the forming and cutting section, the arc of the semicircular cross section of the groove bottom of the whole diameter section is smaller than the arc of the semicircular cross section of the groove bottom of the spiral groove of the forming and cutting section, and the whole diameter section uses the groove bottom and the groove wall of the spiral groove to rotate the spherical billets separated from the bar at multiple angles, and further processes the spherical billets into ideal spherical balls.

[0026] The roller deviation correction mechanism can adjust the front and back positions of the roller, the cooperation position of the second cam shaft and the baffle can be adjusted by rotating the second adjusting gear, so that the front and back positions of the roller are finely adjusted; since the self-aligning bearing is arranged in the bearing seat, the roller can be always kept in a horizontal position; the cooperation position of the first cam shaft and the swing arm can be adjusted by rotating the first adjusting gear, so that the up and down positions of the roller are finely adjusted; the left and right positions of the roller can be finely adjusted by adjusting the transverse adjusting bolt.

[0027] In addition to the above-mentioned embodiments, the present application also includes other implementation manners, and any technical solutions formed by using equivalent transformation or equivalent replacement shall fall within the protection scope of the claims of the present application.

Claims

1. A rapid forming and veneer cutting machine for steel balls, characterized in that: It includes a frame (1), on which two sets of left and right support swing arm assemblies (2) are provided, and on the support swing arm assemblies (2) are rollers (3), the left and right rollers (3) are arranged in parallel, and a lower guide plate assembly (4) is provided between the left and right rollers (3).

2. The steel ball rapid forming and veneer cutting machine according to claim 1, characterized in that: The frame (1) includes a base frame (1.1), and a top cover (1.2) is provided on the top of the base frame (1.1). Locking arms (1.4) are hinged on the left and right sides of the base frame (1.1) through pins (1.3). The top cover (1.2) has a slot (1.5) at the corresponding position of the locking arm (1.4). The locking arm (1.4) is located in the slot (1.5). A locking wedge groove (1.6) is provided on the upper part of the locking arm (1.4). A locking wedge block (1.7) is provided in the locking wedge groove (1.6).

3. The steel ball rapid forming and veneer cutting machine according to claim 1, characterized in that: The supporting swing arm assembly (2) includes two swing arms (2.1) arranged opposite to each other. The upper part of the swing arm (2.1) is hinged to the frame (1) through the first camshaft (2.2). A bearing seat (2.3) is provided in the middle of the swing arm (2.1). The roll (3) is supported between the two bearing seats (2.3). An adjusting rod assembly (5) is connected between the lower ends of the two swing arms (2.1).

4. A rapid steel ball forming and veneer cutting machine according to claim 3, characterized in that: A self-aligning bearing (2.4) is provided inside the bearing housing (2.3); a spherical bearing (2.6) is provided between the first camshaft (2.2) and the rocker arm (2.1).

5. A rapid steel ball forming and veneer cutting machine according to claim 3, characterized in that: The first camshaft (2.2) has a first adjusting gear (2.5) at its outer end.

6. The rapid forming and veneer cutting machine for steel balls according to claim 1, characterized in that: The roll (3) includes a roll body (3.1), and roll necks (3.2) are provided on the front and rear sides of the roll body (3.1). A spiral groove (3.3) is provided on the roll body (3.1). The spiral groove (3.3) includes a feeding distribution section (3.3.1), a forming and cutting section (3.3.2) and a diameter straightening section (3.3.3) arranged sequentially from back to front.

7. A rapid steel ball forming and veneer cutting machine according to claim 3, characterized in that: The adjusting rod assembly (5) includes an intermediate connecting rod (5.1), with adjusting bolts (5.2) on both the front and rear sides of the intermediate connecting rod (5.1). A flange cover (5.3) is connected to the outer end of the adjusting bolt (5.2). A first ball groove (5.4) is provided on the outer side of the flange cover (5.3). A second ball groove (2.7) is provided at the corresponding position of the first ball groove (5.4) on the swing arm (2.1). A rolling ball (5.5) is provided between the first ball groove (5.4) and the second ball groove (2.7).

8. A rapid steel ball forming and veneer cutting machine according to claim 3, characterized in that: A roll correction mechanism (6) is provided on the outside of the swing arm (2.1); the roll correction mechanism (6) includes two front and rear second camshafts (6.1), the positions of the two front and rear second camshafts (6.1) correspond to the positions of the two front and rear swing arms (2.1) respectively, and a second adjusting gear plate (6.2) is provided on the outer end of the second camshaft (6.1).

9. A rapid forming and veneer cutting machine for steel balls according to claim 8, characterized in that: The swing arm (2.1) is provided with a baffle (2.8) at the cam position of the second camshaft (6.1), and the cam part of the second camshaft (6.1) abuts against the baffle (2.8).

10. A rapid forming and veneer cutting machine for steel balls according to claim 1, characterized in that: An intermediate cylinder (7) is provided between the two sets of support swing arm assemblies (2); a lateral adjusting bolt (8) is provided on the outside of the support swing arm assembly (2).

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