Bar pre-rotating clamping and conveying device

Abstract

The invention relates to a bar pre-rotating clamping and conveying device which comprises a bottom frame (1), a supporting seat (2) is arranged on the bottom frame (1), a material guiding pipe (3) is arranged on the supporting seat (2) in the front-back direction, swing arm hinged shaft seats (4) are arranged on the left side and the right side of the supporting seat (2), swing arm hinged shafts (5) are arranged on the swing arm hinged shaft seats (4), swing arms (6) are hinged to the swing arm hinged shafts (5), and the swing arms (6) are arranged on the swing arm hinged shafts (5). The swing arm (7) is provided with a bearing seat (8), the bearing seat (8) is provided with a pinch roll shaft (9), the pinch roll shaft (9) is obliquely arranged, one end of the pinch roll shaft (9) is provided with a pinch roll (10), and the left pinch roll (10) and the right pinch roll (10) are arranged in a staggered mode. According to the invention, the bar can be pre-rotated along the rotating direction of the rolling mill before entering the rolling mill, so that a roller of the rolling mill can conveniently bite steel and feed the bar, and the bar feeding efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to a bar stock pre-rotation clamping device, belonging to the technical field of steel ball production equipment. Background Technology

[0002] Steel balls, as the grinding media in ball mills, are widely used in the grinding process of ball mills. Ball mills are the main equipment in mineral processing and are widely used in the grinding processes of mineral processing plants. my country is a major ore-producing country with a large number of ball mills in use, which requires a large quantity of steel balls. Steel balls are consumable parts, and the annual consumption is substantial. Forged steel balls are widely used due to their long service life. Hot-rolled steel balls are also widely used because of their stable internal quality, dense microstructure, fine grains, resistance to deformation, and good wear resistance.

[0003] Conventional hot-rolled steel ball production processes generally adopt the ferrous metallurgical industry standard for forged (rolled) steel balls (YB / T091-2005) to professionally produce hot-rolled grinding steel balls of various specifications, with a diameter range of ￠25~￠125mm. The billets used for rolling grinding steel balls are hot-rolled round steel bars of various chemical compositions, with a diameter equal to the nominal diameter of the steel ball; conventional hot-rolled steel balls mainly... The production process should be as follows: Step 1: After inspection, the round steel bars are cut into steel ball blanks according to the specified length; Step 2: The steel ball billet is heated to a suitable temperature in a continuous heating furnace before rolling; Step 3: After the red-hot steel billet is fed into the hot rolling mill, it passes between two rolls with special spiral grooves. It rotates forward and is continuously rolled into steel balls; Step 4: The rolled red-hot steel balls are immediately sent to a heat treatment device for quenching and tempering heat treatment, so that the steel balls... Achieve high and uniform hardness; Step 5: Products that pass inspection are sent to the finished goods warehouse, packaged, and then shipped to customers.

[0004] Currently, step three typically involves using a feed guide tube to feed the red-hot bar stock into the rolling mill for rolling. However, the existing round steel bars do not rotate inside the feed guide tube, making it difficult for the rolling mill rolls to bite the steel, resulting in low bar feeding efficiency and reduced production efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a bar pre-rotation clamping device that addresses the above-mentioned prior art, so that the bar can be pre-rotated in the rotation direction of the rolling mill before entering the rolling mill, thereby facilitating the rolling mill rolls to bite the steel and feeding the bar, and effectively improving the bar feeding efficiency.

[0006] The technical scheme adopted by the present application to solve the above problems is as follows: a pre-rotation bar clamping device, which comprises a base frame, a supporting seat is arranged on the base frame, a material guide pipe is arranged on the supporting seat in the front-rear direction, swing arm hinge shaft seats are arranged on the left and right sides of the supporting seat, swing arm hinge shafts are arranged on the swing arm hinge shaft seats, swing arms are hingedly arranged on the swing arm hinge shafts, the left and right swing arms are oppositely arranged, bearing seats are arranged on the swing arms, clamping roller shafts are arranged on the bearing seats, the clamping roller shafts are obliquely arranged, clamping rollers are arranged at one end of the clamping roller shafts, and the left and right clamping rollers are staggered.

[0007] Optionally, the other end of the clamping roller shaft is connected with a driving motor.

[0008] Optionally, an oil cylinder hinge shaft seat is arranged outside the swing arm hinge shaft seat, an adjusting oil cylinder is hingedly arranged on the oil cylinder hinge shaft seat through an oil cylinder pin shaft, and the upper end of the adjusting oil cylinder is hingedly connected with the middle part of the swing arm.

[0009] Optionally, a sliding groove is vertically formed on the swing arm, a connecting screw rod is arranged in the sliding groove, the inner end of the connecting screw rod is connected with the bearing seat, and a locking nut is arranged at the outer end of the connecting screw rod.

[0010] Optionally, a pull rod bolt is arranged above the connecting screw rod, the lower end of the pull rod bolt is connected with the connecting screw rod, and the upper part of the pull rod bolt is connected with the swing arm through an adjusting nut.

[0011] Optionally, adjusting grooves are formed on the left and right sides of the sliding groove, adjusting bolts are arranged in the adjusting grooves, and the bearing seat is connected with the swing arm through the left and right adjusting bolts.

[0012] Optionally, the adjusting grooves are in the shape of a circular arc.

[0013] Optionally, the left and right adjusting grooves in the shape of a circular arc are oppositely arranged.

[0014] Optionally, the rear end of the material guide pipe is in the shape of a trumpet mouth.

[0015] Compared with the prior art, the present application has the following advantages: The pre-rotation bar clamping device can make the bar rotate in the rotation direction of the rolling mill before entering the rolling mill, so that the rolling mill roller can bite the bar, and the bar feeding efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic view of the pre-rotation bar clamping device.

[0017] Figure 2 FIG. 2 is an A-A sectional view of the pre-rotation bar clamping device. Figure 1

[0018] ​Figure 3 B-B sectional view of Figure 1

[0019] wherein: chassis 1 support seat 2 material guide pipe 3 swing arm hinge shaft seat 4 swing arm hinge shaft 5 swing arm 6 bearing seat 7 pinch roll shaft 8 pinch roll 9 drive motor 10 cylinder hinge shaft seat 11 cylinder pin shaft 12 adjusting cylinder 13 slotted guide 14 connecting screw 15 locking nut 16 tension rod bolt 17 adjusting nut 18 adjusting slot 19 adjusting bolt 20 DETAILED DESCRIPTION

[0020] The application will be further described in detail below with reference to the accompanying drawings.

[0021] Referring to Figures 1-3 , the application relates to a bar pre-rotation pinch device, which comprises a chassis 1, a support seat 2 arranged on the chassis 1, a material guide pipe 3 arranged on the support seat 2 in the front-rear direction, swing arm hinge shaft seats 4 arranged on the left and right sides of the support seat 2, swing arm hinge shafts 5 arranged on the swing arm hinge shaft seats 4, swing arms 6 hingedly arranged on the swing arm hinge shafts 5, the left and right swing arms 6 being oppositely arranged, bearing seats 7 arranged on the swing arms 6, pinch roll shafts 8 arranged on the bearing seats 7, the pinch roll shafts 8 being arranged obliquely, pinch rolls 9 arranged at one end of the pinch roll shafts 8, and the left and right pinch rolls 9 being arranged alternately; a drive motor 10 connected to the other end of the pinch roll shafts 8; cylinder hinge shaft seats 11 arranged on the outer sides of the swing arm hinge shaft seats 4, adjusting cylinders 13 hingedly arranged on the cylinder hinge shaft seats 11 through cylinder pin shafts 12, and the upper ends of the adjusting cylinders 13 being hingedly connected to the middle parts of the swing arms 6; slotted guides 14 vertically arranged on the swing arms 6, connecting screws 15 arranged in the slotted guides 14, the inner ends of the connecting screws 15 being connected to the bearing seats 7, and locking nuts 16 arranged at the outer ends of the connecting screws 15; ​A tie rod bolt 17 is provided above the connecting screw 15. The lower end of the tie rod bolt 17 is connected to the connecting screw 15, and the upper part of the tie rod bolt 17 is connected to the swing arm 6 through an adjusting nut 18. The sliding groove 14 has adjustment grooves 19 on both the left and right sides, and adjustment bolts 20 are provided in the adjustment grooves 19. The bearing seat 7 is connected to the swing arm 6 through the two adjustment bolts 20 on the left and right sides. The adjusting groove 19 is arc-shaped; Two arc-shaped adjustment slots 19 are arranged opposite each other on the left and right; The rear end of the feed tube 3 is flared.

[0022] Working principle: After being heated in the furnace, the bar is fed into the feed pipe of this device from back to front. The front end of the bar protrudes from the feed pipe and is clamped by two staggered pinch rollers on the left and right. Driven by the motor, the bar is pre-rotated while being conveyed forward. The pre-rotation direction is in the same direction as the rotation of the rolling mill rolls, which facilitates the rolling mill rolls to bite the steel and feed the bar, effectively improving the bar feeding efficiency.

[0023] The vertical position of the bearing housing can be adjusted by the tie rod bolt, the tilt angle of the bearing housing can be adjusted by the two left and right adjusting bolts, and the opening and closing angle of the swing arm can be adjusted by the adjusting cylinder. By reasonably adjusting the relationship between the three, the pinch roller and the bar can be closely matched, improving the bar feeding efficiency and meeting the production needs of bars of different diameters.

[0024] In addition to the above embodiments, the present invention also includes other embodiments. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.

Claims

1. A bar stock pre-rotation clamping and feeding device, characterized in that: It includes a base frame (1), a support seat (2) is provided on the base frame (1), a guide tube (3) is provided on the support seat (2) along the front-back direction, a swing arm hinge seat (4) is provided on the left and right sides of the support seat (2), a swing arm hinge (5) is provided on the swing arm hinge seat (4), a swing arm (6) is hinged on the swing arm hinge (5), the left and right swing arms (6) are arranged opposite to each other, a bearing seat (7) is provided on the swing arm (6), a pinch roller shaft (8) is provided on the bearing seat (7), the pinch roller shaft (8) is arranged at an angle, a pinch roller (9) is provided at one end of the pinch roller shaft (8), and the left and right pinch rollers (9) are arranged alternately.

2. The bar stock pre-rotation clamping device according to claim 1, characterized in that: The other end of the pinch roller (8) is connected to a drive motor (10).

3. The bar stock pre-rotation clamping device according to claim 1, characterized in that: A hydraulic cylinder hinge seat (11) is provided on the outside of the swing arm hinge seat (4). An adjusting hydraulic cylinder (13) is hinged on the hydraulic cylinder hinge seat (11) through a hydraulic cylinder pin (12). The upper end of the adjusting hydraulic cylinder (13) is hinged to the middle of the swing arm (6).

4. The bar stock pre-rotation clamping device according to claim 1, characterized in that: The upper edge of the swing arm (6) is provided with a vertical groove (14), and a connecting screw (15) is provided in the groove (14). The inner end of the connecting screw (15) is connected to the bearing seat (7), and the outer end of the connecting screw (15) is provided with a locking nut (16).

5. The bar stock pre-rotation clamping device according to claim 4, characterized in that: A tie rod bolt (17) is provided above the connecting screw (15). The lower end of the tie rod bolt (17) is connected to the connecting screw (15), and the upper part of the tie rod bolt (17) is connected to the swing arm (6) through the adjusting nut (18).

6. The bar stock pre-rotation clamping device according to claim 4, characterized in that: The sliding groove (14) has adjustment grooves (19) on both the left and right sides. Adjustment bolts (20) are provided in the adjustment grooves (19). The bearing seat (7) is connected to the swing arm (6) through the two adjustment bolts (20) on the left and right sides.

7. The bar stock pre-rotation clamping device according to claim 6, characterized in that: The adjustment groove (19) is arc-shaped.

8. The bar stock pre-rotation clamping device according to claim 7, characterized in that: Two arc-shaped adjustment grooves (19) are arranged opposite each other.

9. The bar stock pre-rotation clamping device according to claim 1, characterized in that: The rear end of the feed tube (3) is flared.

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