Auxiliary bar penetrating device for cold pilger mill

Abstract

The utility model discloses an auxiliary bar penetrating device for a cold pilger mill, which comprises a mounting bottom plate, a mounting vertical plate is fixedly connected to the side part of the mounting bottom plate, a symmetrical outward turning mechanism is arranged on the mounting vertical plate, guide sleeve seats are symmetrically arranged at the outward turning end of the symmetrical outward turning mechanism, and a first guide sleeve and a second guide sleeve are detachably connected to the inner side of each guide sleeve seat. The first guide sleeve is positioned at the front end of the second guide sleeve; a through groove is formed in the first guide sleeve; the second guide sleeve is provided with a guide groove which is connected with the through groove. The hollow billet feeding device ensures that a hollow billet can be sleeved in the core rod in the feeding process, and the problem of dislocation caused by feeding centering errors is avoided.

Description

Technical Field

[0001] The utility model relates to an auxiliary rod threading device for a cold rolling tube mill, belonging to the technical field of rod threading of cold rolling tube mills. Background Art

[0002] At present, cold rolling mills generally lack special auxiliary rod-threading equipment, which leads to potential efficiency problems and operational risks in the production process. In the traditional cold rolling process, when the rough tube needs to be accurately matched with the mandrel, it depends on the experience and manual adjustment of the operator. However, due to the high matching accuracy requirements between the rough tube and the mandrel, a slight deviation may cause the rough tube to be unable to be accurately inserted into the mandrel. This error not only affects production efficiency, but also may cause the equipment to be unable to achieve fully automated operation, increasing the necessity of human intervention. When the rough tube cannot be accurately fitted with the mandrel, the operator may need to pause the equipment and manually adjust the position of the rough tube. This human intervention not only affects the continuity of production, but also may bring safety hazards in the production process. In addition, frequent shutdowns and adjustments will cause the automatic control system of the equipment to lose its function and fail to play its due role. Especially in large-scale production, the smooth operation of automation is the key to ensuring efficient production and consistent product quality. Therefore, the lack of auxiliary rod-threading devices will directly lead to a decrease in the efficiency of the entire cold rolling production line and increase the maintenance and operation costs of the equipment. Utility Model Content

[0003] The utility model aims to provide an auxiliary rod threading device for a cold rolling tube mill. The utility model ensures that the rough tube can be inserted into the core rod during the feeding process, avoiding the problem of misalignment caused by feeding centering error.

[0004] The technical solution of the utility model: an auxiliary rod threading device for a cold rolling tube mill, comprising a mounting base plate, a mounting vertical plate fixedly connected to the side of the mounting base plate, a symmetrical outward turning mechanism provided on the mounting vertical plate, a guide sleeve seat symmetrically arranged at the outward turning end of the symmetrical outward turning mechanism, a first guide sleeve and a second guide sleeve detachably connected to the inner side of the guide sleeve seat, the first guide sleeve being located at the front end of the second guide sleeve; a through groove being provided on the first guide sleeve; a guide groove being connected to the through groove on the second guide sleeve.

[0005] The above-mentioned auxiliary rod threading device for cold rolling tube mill, the symmetrical outward turning mechanism includes a first rotating shaft and a second rotating shaft arranged on the mounting vertical plate; the first rotating shaft is rotatably connected to a first gear; the second rotating shaft is rotatably connected to a second gear, and the second gear is connected to the first gear and is externally meshed.

[0006] The aforementioned auxiliary rod threading device for a cold rolling tube mill, wherein the symmetric outward-turning mechanism further comprises a mounting plate arranged on the side of the mounting vertical plate and a guiding block arranged at the lower part of the rear end of the mounting vertical plate, and the guiding block is provided with a moving groove; a cylinder is fixedly connected to the outer side of the mounting plate, the extending end of the cylinder is connected with a rack, and the rack is slidably matched with the moving groove; the rack is connected with and externally meshes with a first gear.

[0007] The aforementioned auxiliary rod threading device for a cold rolling tube mill, wherein the guide sleeve seat is provided with a semi-circular groove, square grooves are respectively arranged at the upper and lower ends of the semi-circular groove, and a plurality of threaded holes are arranged in the square grooves; a limiting block is placed in the square groove, and a plurality of counterbores are arranged on the limiting block, and the counterbores correspond to the threaded holes.

[0008] The aforementioned auxiliary rod threading device for a cold rolling tube mill, wherein a first semi-circular convex ring is arranged on the side of the first guide sleeve, and first flat grooves are respectively arranged at both ends of the first semi-circular convex ring, and the first flat grooves are matched with the limiting block.

[0009] The aforementioned auxiliary rod threading device for a cold rolling tube mill, wherein a second semi-circular convex ring is arranged on the side of the second guide sleeve, and second flat grooves are respectively arranged at both ends of the second semi-circular convex ring, and the second flat grooves are matched with the limiting block.

[0010] The aforementioned auxiliary rod threading device for a cold rolling tube mill, wherein the cross section of the guiding groove is in a funnel shape.

[0011] The aforementioned auxiliary rod threading device for a cold rolling tube mill, wherein a plurality of waist-shaped grooves are arranged on the mounting bottom plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, first, the first guide sleeve and the chuck box are centered, then the utility model is fixed through the mounting bottom plate, and then the outer end face of the core rod and the inner end face of the first guide sleeve are located in the same vertical plane. Then, the guide sleeve seats on both sides are turned inward through the symmetric outward-turning mechanism, so that the core rod is located in the through groove of the first guide sleeve. Then, the capillary tube is inserted inward through the guiding groove into the core rod. After the rod threading operation is completed, the symmetric outward-turning mechanism turns the guide sleeve seats to both sides, and the core rod can be normally fed into the chuck box and then sent into the cold rolling tube mill. Thus, the utility model can achieve the effect of quickly sleeving the capillary tube onto the core rod and preventing centering errors during the feeding process, and has the advantages of simple operation, convenience and quickness. In addition, for capillary tubes and core rods of different specifications, the utility model can be adjusted by quickly disassembling the first guide sleeve and the second guide sleeve.

[0014] 2. In the present utility model, the symmetric outward-turning mechanism drives the rack to move in the moving groove of the guiding block through the telescopic movement of the air cylinder. During the movement of the rack, it meshes with the first gear, causing the first gear to rotate. Then, the first gear drives the second gear to mesh and rotate, causing the guide sleeve seats on the first gear and the second gear to flip accordingly, realizing synchronous inward or outward flipping. Thus, the present utility model can achieve the effect of synchronously flipping the guide sleeve seats on both sides, and has the advantages of simple structure and convenient operation.

[0015] 3. In the present utility model, by placing the first semi-circular convex ring and the second semi-circular convex ring in the circular groove, the axial movement of the first guide sleeve and the second guide sleeve is restricted. By passing the bolt through the counterbore and screwing it into the threaded hole, the limiting block is connected to the square groove. At the same time, the end face of the square groove contacts the first flat groove and the second flat groove, restricting the axial rotation of the first guide sleeve and the second guide sleeve, thereby connecting and fixing the guide sleeve seat to the first guide sleeve and the second guide sleeve, facilitating the replacement of different first guide sleeves and second guide sleeves according to different mandrels, and increasing the adaptability of the present utility model. Thus, the present utility model can achieve the effect of being able to adapt to various specifications of capillary tubes and mandrels, and has the advantage of wide practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 is a schematic rear structural view of the present utility model;

[0018] Figure 3 is a schematic view of the opened structure of the present utility model;

[0019] Figure 4 is a schematic structural view of the guide sleeve seat;

[0020] Figure 5 is a schematic structural view of the first guide sleeve;

[0021] Figure 6 is a schematic structural view of the second guide sleeve

[0022] The reference numerals in the drawings are: 1 - mounting base plate, 2 - mounting vertical plate, 3 - symmetric outward-turning mechanism, 4 - guide sleeve seat, 5 - first guide sleeve, 6 - second guide sleeve, 7 - through groove, 8 - guiding groove, 9 - first rotating shaft, 10 - second rotating shaft, 11 - first gear, 12 - second gear, 13 - mounting plate, 14 - guiding block, 15 - moving groove, 16 - air cylinder, 17 - rack, 18 - semi-circular groove, 19 - square groove, 20 - threaded hole, 21 - limiting block, 22 - counterbore, 23 - first semi-circular convex ring, 24 - first flat groove, 25 - second semi-circular convex ring, 26 - second flat groove, 27 - waist-shaped groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0024] Embodiment: An auxiliary rod threading device for a cold rolling mill, comprising: Figures 1-6 As shown, it includes a mounting base plate 1, on which two waist-shaped grooves 27 are provided, and the waist-shaped grooves 27 are used for the installation and fixing of the utility model; the side of the mounting base plate 1 is fixedly connected with a mounting vertical plate 2, on which a symmetrical outward turning mechanism 3 is provided, and a guide sleeve seat 4 is symmetrically provided at the outward turning end of the symmetrical outward turning mechanism 3, and the inner side of the guide sleeve seat 4 is detachably connected with a first guide sleeve 5 and a second guide sleeve 6, and the first guide sleeve 5 is located at the front end of the second guide sleeve 6; the first guide sleeve 5 is provided with a through groove 7; the second guide sleeve 6 is provided with a guide groove 8, and the guide groove 8 is connected with the through groove 7; the cross section of the guide groove 8 is funnel-shaped; the radius of the through groove 7 is greater than the radius of the funnel-shaped minor diameter of the guide groove 8, and the difference is the thickness of the core rod, so that the capillary tube can smoothly enter the core rod after passing through the guide groove 8. The wear resistance of the first guide sleeve 5 and the second guide sleeve 6 can be improved by selecting materials such as cast iron, carbon steel, copper, or by enclosing nylon.

[0025] Preferably, if Figure 2 As shown, the symmetrical outward turning mechanism 3 includes a first rotating shaft 9 and a second rotating shaft 10 arranged on the mounting vertical plate 2; the first rotating shaft 9 is rotatably connected to a first gear 11; the second rotating shaft 10 is rotatably connected to a second gear 12, the second gear 12 is connected to the first gear 11 and meshes externally. The symmetrical outward turning mechanism 3 also includes a mounting plate 13 arranged on the side of the mounting vertical plate 2 and a guide block 14 arranged at the lower rear end of the mounting vertical plate 2, the guide block 14 having a moving groove 15; the outer side of the mounting plate 13 is fixedly connected to a cylinder 16, the protruding end of the cylinder 16 is connected to a rack 17, the rack 17 is slidably matched with the moving groove 15; the rack 17 is connected to the first gear 11 and meshes externally. The symmetrical outward turning mechanism 3 drives the rack 17 to move in the moving groove 15 of the guide block 14 through the extension and retraction of the cylinder 16. The rack 17 will engage with the first gear 11 during the movement, causing the first gear 11 to rotate, and then the first gear 11 drives the second gear 12 to engage and rotate, causing the guide sleeve seat 4 on the first gear 11 and the second gear 12 to flip accordingly, thereby achieving synchronous inward or outward flipping.

[0026] Preferably, if Figure 4 As shown, the guide sleeve seat 4 has a semicircular groove 18, and the upper and lower ends of the semicircular groove 18 are respectively provided with square grooves 19, and the square grooves 19 are provided with a plurality of threaded holes 20; Figure 3 As shown, a limiting block 21 is placed in the square groove 19, and a plurality of countersunk holes 22 are provided on the limiting block 21, and the countersunk holes 22 correspond to the threaded holes 20. Figure 5As shown in the figure, a first semi-circular convex ring 23 is provided on the side of the first guide sleeve 5. Both ends of the first semi-circular convex ring 23 are respectively provided with a first flat groove 24, and the first flat groove 24 is matched with the limit block 21. As Figure 6 As shown in the figure, a second semi-circular convex ring 25 is provided on the side of the second guide sleeve 6. Both ends of the second semi-circular convex ring 25 are respectively provided with a second flat groove 26, and the second flat groove 26 is matched with the limit block 21. By placing the first semi-circular convex ring 23 and the second semi-circular convex ring 25 in the circular groove, the axial movement of the first guide sleeve 5 and the second guide sleeve 6 is restricted. By passing a bolt through the counterbore 22 and screwing it into the threaded hole 20, the limit block 21 is connected to the square groove 19. At the same time, the end face of the square groove 19 will contact the first flat groove and the second flat groove, restricting the axial rotation of the first guide sleeve 5 and the second guide sleeve 6, thereby connecting and fixing the guide sleeve seat 4 to the first guide sleeve 5 and the second guide sleeve 6, facilitating the replacement of different first guide sleeves 5 and second guide sleeves 6 according to different mandrels, and increasing the adaptability of the present utility model.

[0027] Working principle:

[0028] Select the corresponding first guide sleeve 5 and second guide sleeve 6 according to the sizes of the mandrel and the capillary tube. Place the first semi-circular convex ring 23 and the second semi-circular convex ring 25 in the circular groove, and then pass a bolt through the counterbore 22 and screw it into the threaded hole 20 to connect the limit block 21 to the square groove 19. At the same time, the end face of the square groove 19 will contact the first flat groove and the second flat groove to complete the connection and fixation of the first guide sleeve 5 and the second guide sleeve 6 to the guide sleeve seat 4. Then, perform centering operation on the first guide sleeve 5 and the collet box. After that, pass a bolt through the kidney-shaped groove of the mounting base plate 1 and screw it into the corresponding fixing screw hole of the operating table to fix the present utility model. Align the outer end face of the mandrel and the inner end face of the first guide sleeve 5 in the same vertical plane. Then, through the symmetrical outward-turning mechanism 3, turn the guide sleeve seats 4 on both sides inward so that the mandrel is located in the through groove 7 of the first guide sleeve 5. Then, insert the capillary tube inward through the guide groove 8 into the mandrel. After completing the piercing operation, the symmetrical outward-turning mechanism 3 turns the guide sleeve seats 4 to both sides, and the mandrel can be normally fed into the collet box and then sent to the cold rolling tube mill.

Claims

1. An auxiliary rod threading device for a cold rolling tube mill, characterized in that: The invention comprises a mounting base plate (1), the side of the mounting base plate (1) is fixedly connected to a mounting vertical plate (2), a symmetrical outward turning mechanism (3) is provided on the mounting vertical plate (2), a guide sleeve seat (4) is symmetrically arranged at the outward turning end of the symmetrical outward turning mechanism (3), a first guide sleeve (5) and a second guide sleeve (6) are detachably connected on the inner side of the guide sleeve seat (4), the first guide sleeve (5) is located at the front end of the second guide sleeve (6); the first guide sleeve (5) is provided with a through groove (7); the second guide sleeve (6) is provided with a guide groove (8), and the guide groove (8) is connected with the through groove (7).

2. The auxiliary rod threading device for a cold rolling tube mill according to claim 1, characterized in that: The symmetrical outward turning mechanism (3) comprises a first rotating shaft (9) and a second rotating shaft (10) which are arranged on the mounting vertical plate (2); the first rotating shaft (9) is rotatably connected to a first gear (11); the second rotating shaft (10) is rotatably connected to a second gear (12), and the second gear (12) is connected to the first gear (11) and is externally meshed.

3. The auxiliary rod threading device for a cold rolling tube mill according to claim 2, characterized in that: The symmetrical outward turning mechanism (3) further comprises a mounting plate (13) arranged on the side of the mounting vertical plate (2) and a guide block (14) arranged at the lower rear end of the mounting vertical plate (2), wherein the guide block (14) has a movable groove (15); a cylinder (16) is fixedly connected to the outer side of the mounting plate (13), a protruding end of the cylinder (16) is connected to a rack (17), and the rack (17) is slidably matched with the movable groove (15); the rack (17) is connected to the first gear (11) and is externally meshed.

4. The auxiliary rod threading device for a cold rolling tube mill according to claim 1, characterized in that: The guide sleeve seat (4) is provided with a semicircular groove (18), the upper and lower ends of the semicircular groove (18) are respectively provided with square grooves (19), and a plurality of threaded holes (20) are provided in the square groove (19); a limiting block (21) is placed in the square groove (19), and a plurality of countersunk holes (22) are provided on the limiting block (21), and the countersunk holes (22) correspond to the threaded holes (20).

5. The auxiliary rod threading device for a cold rolling tube mill according to claim 4, characterized in that: A first semicircular convex ring (23) is provided on the side of the first guide sleeve (5), and both ends of the first semicircular convex ring (23) respectively have first planar grooves (24), and the first planar grooves (24) are matched with the limit blocks (21).

6. The auxiliary rod threading device for a cold rolling tube mill according to claim 4, characterized in that: A second semicircular convex ring (25) is provided on the side of the second guide sleeve (6), and both ends of the second semicircular convex ring (25) are respectively provided with second plane grooves (26), and the second plane grooves (26) are matched with the limit blocks (21).

7. The auxiliary rod threading device for a cold rolling tube mill according to claim 1, characterized in that: The cross section of the guide groove (8) is funnel-shaped.

8. The auxiliary rod threading device for a cold rolling tube mill according to claim 4, characterized in that: The installation base plate (1) is provided with a plurality of waist-shaped grooves (27).

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