Head for cold pilger mill

Abstract

The utility model discloses a machine head for a cold pilger mill, and relates to the technical field of metal rolling. A machine head for a cold pilger mill comprises a mounting base and two rollers, two racks are fixedly connected to the top of the mounting base, two mounting sliding plates are slidably connected to the interiors of the two racks, the two rollers are rotatably connected to the interiors of the opposite faces of the two corresponding mounting sliding plates, and a machine head mounting structure is located on the mounting base. The machine head mounting structure comprises a driving motor, a two-way threaded rod and two connecting plates, and through cooperation of the two-way threaded rod, the connecting plates, an adjusting plate, positioning plates and fixing inserting rods, the two connecting plates can drive the multiple positioning plates on the connecting plates to move oppositely, so that the positioning plates conveniently drive the fixing inserting rods on the positioning plates to be separated from the corresponding inserting grooves, and the machine head mounting structure is convenient to use. And therefore, the mounting sliding plate can be conveniently dismounted and mounted, looseness caused by vibration is avoided, and the stability of the roller after mounting is further improved.

Description

Technical Field

[0001] This utility model relates to the field of metal rolling technology, and in particular to a die head for a cold rolling mill. Background Technology

[0002] A cold rolling mill is a process equipment that uses annular holes to cold roll rough tubes. This machine has good billet-making performance and can also roll non-ferrous metal seamless tubes of ordinary precision. Chinese utility model patent, authorization announcement number "CN221817021U", discloses a die head for a cold rolling mill. This utility model uses a threaded rod connected internally by a threaded component to abut against the upper end face of a limiting block, thus fixing the frame and rolls. During disassembly, rotating the threaded rod upwards releases the fixation of the frame and rolls. Then, rotating the rotating plate and pulling the handle on the limiting block allows the rolls to be pulled out, facilitating die head replacement in the cold rolling mill.

[0003] Although the above technical solution uses a threaded rod to fix the die head during use, the working principle of the cold rolling mill is that the rolls and mandrel form a regular cavity and the steel pipe is rolled by the elastic deformation of the metal. This causes the cold rolling mill to vibrate during use. Under long-term vibration, the threaded rod is prone to loosening, which in turn affects the fixation of the limit block and reduces the stability after the rolls are installed. Therefore, we propose a die head for the cold rolling mill. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a die head for a cold rolling mill. This solution addresses the issue that although a threaded rod is used to fix the die head, the working principle of a cold rolling mill is that the rolls and mandrel form a regular cavity, and the steel pipe is rolled by utilizing the elastic deformation of the metal. This causes the cold rolling mill to vibrate during use, and under long-term vibration, the threaded rod is prone to loosening, which in turn affects the fixation of the limit block and reduces the stability of the rolls after installation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a die head for a cold rolling mill, comprising:

[0006] The mounting base consists of a base and two rollers. The top of the mounting base is fixedly connected to two frames, and the interior of each frame is slidably connected to two mounting slides. The two rollers are rotatably connected to the opposite surfaces of the corresponding two mounting slides.

[0007] The head unit mounting structure is located on the mounting base;

[0008] The head mounting structure includes a drive motor, a bidirectional threaded rod, and two connecting plates. The bidirectional threaded rod is rotatably connected to the inside of the mounting base. The drive motor is fixedly mounted on one side of the mounting base, and its output end extends into the inside of the mounting base and is fixedly connected to the bidirectional threaded rod. Adjustment cavities are provided on both sides of the two frames, and all four adjustment cavities communicate with the inside of the mounting base. Two through slots are provided inside the two frames, and all four through slots communicate with the inside of the corresponding adjustment cavities. The two connecting plates are threaded onto the outer surface of the bidirectional threaded rod and are slidably connected to the inside of the mounting base. Two adjustment plates are fixedly connected to the top of each of the two connecting plates, and multiple screw holes are provided on each of the four adjustment plates.

[0009] Preferably, the machine head mounting structure further includes eight positioning plates, eight sliding blocks, and eight moving plates. The eight sliding blocks are all slidably connected inside the corresponding adjusting plates. The eight positioning plates are all fixedly connected to one side of the corresponding sliding block. The eight moving plates are all fixedly connected to the side of the corresponding sliding block away from the corresponding positioning plate. The eight moving plates are all fixedly mounted on the corresponding adjusting plates by bolts. The bolts on the eight moving plates are all threadedly connected to the corresponding screw holes. Two fixing rods are fixedly connected to the side of the eight positioning plates away from the corresponding sliding block.

[0010] Preferably, each of the four mounting slides has two slots on both sides, and the two fixing rods on the eight positioning plates are inserted into the corresponding two slots.

[0011] Preferably, both of the frames are U-shaped structures.

[0012] Preferably, all four mounting slides are of an "H" shape.

[0013] Preferably, both sides of the two frames are bolted with inspection plates.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The die head of this cold rolling mill, through the cooperation of a bidirectional threaded rod, connecting plate, adjusting plate, positioning plate and fixed insert rod, enables two connecting plates to drive multiple positioning plates on them to move in opposite directions. This facilitates the positioning plate to drive the fixed insert rod on it to disengage from the corresponding slot, thereby making it easier to disassemble and install the mounting plate, avoiding loosening due to vibration, and further improving the stability of the roll after installation. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the roll structure of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the mounting base of this utility model;

[0020] Figure 4 This is a schematic diagram of the mounting slide structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the positioning plate structure of this utility model.

[0022] Reference numerals in the attached diagram: 1. Mounting base; 2. Drive motor; 3. Frame; 4. Mounting slide plate; 5. Roller; 6. Screw hole; 7. Adjusting plate; 8. Moving plate; 9. Connecting plate; 10. Positioning plate; 11. Fixed insert rod; 12. Two-way threaded rod; 13. Slot; 14. Adjusting cavity; 15. Sliding block; 16. Inspection plate; 17. Through slot. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Please see Figure 1-5This utility model provides a technical solution: a die head for a cold rolling mill, comprising:

[0028] Mounting base 1 and two rollers 5. The top of mounting base 1 is fixedly connected to two frames 3. The interior of each of the two frames 3 is slidably connected to two mounting slides 4. All four mounting slides 4 are “H” shaped. The two rollers 5 are rotatably connected to the opposite surfaces of the corresponding two mounting slides 4. Both frames 3 are “U” shaped.

[0029] The head unit mounting structure is located on the mounting base 1;

[0030] The head mounting structure includes a drive motor 2, a bidirectional threaded rod 12, and two connecting plates 9. The bidirectional threaded rod 12 is rotatably connected to the inside of the mounting base 1. The drive motor 2 is fixedly mounted on one side of the mounting base 1. The output end of the drive motor 2 extends rotatably into the inside of the mounting base 1 and is fixedly connected to the bidirectional threaded rod 12. Adjustment cavities 14 are provided on both sides of the two frames 3. All four adjustment cavities 14 are connected to the inside of the mounting base 1. Two through slots 17 are provided inside the two frames 3. All four through slots 17 are connected to the inside of the corresponding adjustment cavities 14. The two connecting plates 9 are threaded onto the outer surface of the bidirectional threaded rod 12. The two connecting plates 9 are slidably connected to the inside of the mounting base 1. Two adjustment plates 7 are fixedly connected to the top of the two connecting plates 9. Multiple screw holes 6 are provided on the four adjustment plates 7.

[0031] The machine head mounting structure also includes eight positioning plates 10, eight sliding blocks 15, and eight moving plates 8. The eight sliding blocks 15 are all slidably connected inside the corresponding adjusting plate 7. The eight positioning plates 10 are all fixedly connected to one side of the corresponding sliding block 15. The eight moving plates 8 are all fixedly connected to the side of the corresponding sliding block 15 away from the corresponding positioning plate 10. The eight moving plates 8 are all fixedly installed on the corresponding adjusting plate 7 by bolts. The bolts on the eight moving plates 8 are all threadedly connected to the corresponding screw holes 6. The side of the eight positioning plates 10 away from the corresponding sliding block 15 is fixedly connected to two fixing rods 11.

[0032] Each of the four mounting slides 4 has two slots 13 on both sides. The two fixing rods 11 on the eight positioning plates 10 are inserted into the corresponding two slots 13. The two frames 3 have maintenance plates 16 bolted to both sides.

[0033] Furthermore, when using this device, the drive motor 2 is started by connecting an external power source. The drive motor 2 drives the bidirectional threaded rod 12 to rotate. The rotation of the bidirectional threaded rod 12 causes the two connecting plates 9 to move in opposite directions under the guidance inside the mounting base 1. The movement of the two connecting plates 9 causes the two adjusting plates 7 on them to move inside the corresponding adjusting cavities 14. The movement of the four adjusting plates 7 causes the four positioning plates 10 to move, thereby facilitating the disengagement of the two fixed inserts 11 on the four positioning plates 10 from the corresponding slots 13. Subsequently, the four mounting slide plates 4 can be released from their limits, thus facilitating the removal and replacement of the two rollers 5. The two rollers 5 are then replaced. When the mounting slides 4 are of the same specification, when different mounting slides 4 need to be fixedly installed, since the heights of the mounting slides 4 of different specifications are different, but the distance between the two slots 13 on them remains unchanged, the four inspection plates 16 are removed one by one, and the two connecting plates 9 are adjusted to fit against the two sides of the inner wall of the mounting base 1. This makes it easy to use tools to remove the two bolts on the moving plate 8, thereby pulling the moving plate 8 to drive the sliding block 15 to move the positioning plate 10, which makes it easy to adjust the height of the two fixing rods 11 on it. This makes it easy to adjust according to the different specifications of the mounting slides 4, so that the adjusted positioning plate 10 can be fixed with bolts.

[0034] With the cooperation of the bidirectional threaded rod 12, connecting plate 9, adjusting plate 7, positioning plate 10 and fixing rod 11, the two connecting plates 9 can drive the multiple positioning plates 10 on them to move in opposite directions, so that the positioning plate 10 can drive the fixing rod 11 on it to disengage from the corresponding slot 13, thereby facilitating the disassembly and installation of the mounting slide plate 4, avoiding loosening due to vibration, and further improving the stability of the roll 5 after installation.

[0035] Structural Description: Mounting Base 1: As the supporting structure for the entire machine head, mounting base 1 mainly bears the weight and force from the frame 3, the rolls 5, and the machine head mounting structure during operation;

[0036] Frame 3: The "U"-shaped frame 3 is used to install and support the rolls 5 and to install the slide plate 4;

[0037] Mounting slide plate 4: The "H"-shaped mounting slide plate 4 is used to slide and connect the roll 5, and allows the roll 5 to rotate within the mounting slide plate 4;

[0038] Roll 5: Roll 5 is the core component of the cold rolling mill, used to roll tubes;

[0039] Drive motor 2: Drive motor 2 provides power to drive the bidirectional threaded rod 12 to rotate. Under normal operating conditions, drive motor 2 itself will not produce significant vibration;

[0040] Bidirectional threaded rod 12: The rotation of the bidirectional threaded rod 12 is used to adjust the position of the connecting plate 9, thereby adjusting the position of the frame 3 and the roll 5;

[0041] Connecting plate 9, adjusting plate 7, screw hole 6: These structures are used to connect and fix the positions of frame 3 and roll 5;

[0042] Positioning plate 10, sliding block 15, moving plate 8, fixing rod 11: These structures are used to further fix and adjust the position of frame 3 and roll 5;

[0043] Slot 13 and maintenance plate 16: Slot 13 is used to fix the insertion of the plug rod 11 to ensure the stability of the frame 3 and the roll 5. Maintenance plate 16 is used to facilitate the maintenance and repair of the frame 3 and the roll 5.

[0044] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A mandrel for a cold pilger mill, characterized in that The utility model relates to a double roller mill head installation structure, including: The top of the mounting base (1) is fixedly connected with two racks (3), the interiors of the two racks (3) are slidably connected with two mounting sliding plates (4), and the two rollers (5) are rotatably connected to the opposite faces of the corresponding two mounting sliding plates (4). The head mounting structure is located on the mounting base (1). The head mounting structure includes a driving motor (2), a bidirectional threaded rod (12), and two connecting plates (9), and the bidirectional threaded rod (12) is rotatably connected inside the mounting base (1). The driving motor (2) is fixedly installed on one side of the mounting base (1), the output end of the driving motor (2) extends into the interior of the mounting base (1) and is fixedly connected with the bidirectional threaded rod (12), and the two sides of the two racks (3) are provided with adjusting cavities (14), and the four adjusting cavities (14) are in communication with the interior of the mounting base (1). The interiors of the two racks (3) are provided with two through grooves (17), the four through grooves (17) are in communication with the interiors of the corresponding adjusting cavities (14), and the two connecting plates (9) are threadedly sleeved on the outer surface of the bidirectional threaded rod (12). The two connecting plates (9) are slidably connected with the interior of the mounting base (1), the top of the two connecting plates (9) is fixedly connected with two adjusting plates (7), and a plurality of screw holes (6) are formed in the four adjusting plates (7).

2. A mandrel for a cold pilger mill as defined in claim 1, characterized in that: The head mounting structure further includes eight positioning plates (10), eight sliding blocks (15), and eight moving plates (8), the eight sliding blocks (15) are slidably connected inside the corresponding adjusting plates (7), and the eight positioning plates (10) are fixedly connected on one side of the corresponding sliding blocks (15). The eight moving plates (8) are fixedly connected on the side of the corresponding sliding blocks (15) away from the corresponding positioning plates (10), the eight moving plates (8) are fixedly installed on the corresponding adjusting plates (7) through bolts, the bolts on the eight moving plates (8) are in threaded connection with the corresponding screw holes (6), and the side of the eight positioning plates (10) away from the corresponding sliding blocks (15) is fixedly connected with two fixed insertion rods (11).

3. A mandrel for a cold pilger mill as defined in claim 1, characterized in that: The two sides of the four mounting sliding plates (4) are provided with two insertion grooves (13), and the two fixed insertion rods (11) on the eight positioning plates (10) are inserted into the corresponding two insertion grooves (13).

4. A mandrel for a cold pilger mill as defined in claim 1, characterized in that: The two racks (3) are both "U" shaped structures.

5. A mandrel for a cold pilger mill as defined in claim 1, wherein: The four mounting sliding plates (4) are all "H" shaped structures.

6. A piercer head for a cold pilger mill as defined in claim 1, characterized in that: The two racks (3) are both "U" shaped structures. The two racks (3) are both "U" shaped structures.

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