A punch press entry guide

Abstract

The utility model relates to the technical field of steel pipe production discloses a piercing mill entry guide cylinder, including entry guide cylinder body, the one end symmetry of entry guide cylinder body is equipped with the mounting seat, and the one end symmetry of mounting seat away from entry guide cylinder body is equipped with a plurality of through -holes who opens rectangular distribution, and the symmetrical position of mounting seat front and back sides is equipped with fixed mechanism respectively, fixed mechanism includes fixed block, and fixed block sets up in mounting seat one side, and the top symmetry of fixed block opens the fixed hole who corresponds with through -hole, and the fixed hole is equipped with fixed pin, and the lower end of two fixed pins of same side is connected with the connecting plate through the fixed hole and through -hole penetration, the utility model discloses the fixed mechanism through the drive block of propelling can remove fixed pin restriction to dismount entry guide cylinder body, and after turning over its un-abraded end and reinstalling, inserting fixed pin can realize the automatic reset limit of clamping block by spring elastic force, and it is quick to dismount, improves the efficiency, reduces the downtime time, and also supports the guide cylinder reuse, prolongs the life, reduces the cost of purchase and replacement.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe production technology, and in particular to an inlet guide tube for a piercing machine. Background Technology

[0002] The inlet guide tube of the piercing mill is a core and commonly used tool in steel pipe rolling. Its main functions include: accurately guiding the billet into the piercing mill pass to ensure piercing accuracy, stably conveying the billet to reduce piercing defects, buffering the impact of the billet on the equipment to extend its service life, and improving production efficiency by ensuring continuous process operation. It has a significant impact on the cost and quality of steel pipe production.

[0003] In actual rolling, due to the pressure of the billet's own weight and the action of rotation, the bottom of the guide tube's inner hole experiences concentrated friction and severe wear, requiring immediate replacement once the wear threshold is reached. At the same time, the inlet guide tube is usually fixed by bolts, making disassembly and assembly cumbersome during replacement. Frequent replacements increase procurement costs, and the downtime and reduced work efficiency caused by disassembly and assembly together become prominent obstacles to cost reduction and efficiency improvement in steel pipe production. Utility Model Content

[0004] Given that the existing inlet guide tube of the piercing mill suffers severe wear at the bottom of the inner hole due to the pressure of the billet's own weight and the effect of rotational motion, requiring frequent replacement, and that its bolt-mounted installation makes disassembly and assembly cumbersome during replacement, thus increasing procurement costs, downtime, and reducing work efficiency, becoming a prominent obstacle to cost reduction and efficiency improvement in steel pipe production, this utility model is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solution: an inlet guide tube for a perforating machine, comprising an inlet guide tube body, wherein a mounting seat is symmetrically provided at one end of the inlet guide tube body, and a plurality of through holes are rectangularly distributed at the end of the mounting seat away from the inlet guide tube body, and a fixing mechanism is provided at symmetrical positions on the front and rear sides of the mounting seat;

[0006] The fixing mechanism includes a fixing block, which is disposed on one side of the mounting base. The top of the fixing block is symmetrically provided with fixing holes corresponding to the through holes. Fixing pins are provided in the fixing holes. The lower ends of the two fixing pins on the same side pass through the fixing holes and the through holes and are connected to a connecting plate.

[0007] As a preferred embodiment, the mounting base includes a bracket, which is fixedly installed on one side of the inlet guide tube body. A base is fixedly connected to the end of the bracket away from the inlet guide tube body. The through hole is provided on the base. The base has a frustum-shaped structure and is located below the fixing block. The connecting plate is located below the base.

[0008] As a preferred embodiment, the fixing mechanism further includes a driving block. The top of the fixing block has a reset groove, and the driving block is slidably installed in the reset groove. The bottom of the driving block has a receiving groove, and the receiving groove has symmetrically arranged locking blocks on the inner side. The outer end of the locking blocks extends into the fixing hole. The outer wall of the fixing pin has a locking groove that matches the locking blocks. The outer side of the locking blocks has symmetrically arranged fixing posts on the outer side. The front and rear walls of the driving block have symmetrically arranged driving grooves that match the fixing posts, and the driving grooves are connected to the receiving groove. The lower end of the driving block is connected to a baffle, and the bottom of the baffle is fixedly connected to the bottom of the reset groove by a spring.

[0009] As a preferred embodiment, a support plate is provided on the inner side of the receiving groove, and the support plate is located between the card block and the baffle. The top surface of the support plate is in contact with the bottom surface of the card block, and the support plate is fixedly connected to the inner wall of the reset groove. A guide post is provided at the bottom of the reset groove, and the upper end of the guide post passes through the baffle and the support plate.

[0010] As a preferred embodiment, the front section of the card block is a right-angled trapezoid, and the top of the fixing pin is provided with a pressing surface that is adapted to the card block.

[0011] As a preferred embodiment, the two drive slots on the same side are arranged in a figure-eight shape, and the drive slots are straight slots. The receiving slot is cross-shaped, and the inner wall of the receiving slot is slidably connected to the support plate. The total length of the inlet guide tube body is 1234mm.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] 1. This utility model allows the inlet guide tube body to be flipped and installed by symmetrically arranged mounting seats. The fixing mechanism can quickly release the fixing of the inlet guide tube body. After flipping the guide tube, inserting the fixing pin will automatically complete the limit fixing. It efficiently supports the switching use of the unworn end of the guide tube, improves the service life of the inlet guide tube body, and further reduces the purchase and replacement cost of the inlet guide tube body.

[0014] 2. The fixing mechanism of this utility model pushes the drive block down, and through the drive groove and the fixing column, it drives the locking block to retract and disengage from the fixing pin groove. After the restriction is released, the fixing pin can be removed to disassemble the guide cylinder. The unworn end is flipped over for reinstallation and the fixing pin is inserted. The pressing surface pushes the locking block to retract. After alignment, the spring drives the locking block to reset and lock, realizing quick disassembly and assembly of the guide cylinder, improving efficiency and reducing downtime. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the fixing mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure between the drive block, support plate, and locking block of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure between the fixing pin and the connecting plate of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Inlet guide tube body; 2. Mounting base; 3. Bracket; 4. Base; 5. Fixing block; 6. Fixing pin; 7. Connecting plate; 8. Reset groove; 9. Drive block; 10. Support plate; 11. Locking block; 12. Spring; 13. Guide post; 14. Fixing post; 15. Receiving groove; 16. Drive groove; 17. Locking groove; 18. Extrusion surface; 19. Baffle; 20. Fixing hole. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Reference Figure 1 - Figure 4 As shown, a perforating machine inlet guide tube is provided, including an inlet guide tube body 1. A mounting base 2 is symmetrically provided at one end of the inlet guide tube body 1. Several through holes are rectangularly distributed at the end of the mounting base 2 away from the inlet guide tube body 1. Fixing mechanisms are symmetrically provided on the front and rear sides of the mounting base 2. This provides a structural basis for the stable connection between the fixing mechanisms and the inlet guide tube body 1. The rectangularly distributed through holes ensure balanced force on the fixing pin 6, and the symmetrically arranged fixing mechanisms improve fixing stability, laying the foundation for subsequent quick assembly and disassembly.

[0023] The fixing mechanism includes a fixing block 5, which is located on one side of the mounting base 2. The top of the fixing block 5 has symmetrical fixing holes 20 corresponding to the through holes. Fixing pins 6 are installed in the fixing holes 20. The lower ends of the two fixing pins 6 on the same side pass through the fixing holes 20 and the through holes and are connected to the connecting plate 7. The fixing block 5 provides an installation carrier for the fixing mechanism. The correspondence between the fixing holes 20 and the through holes can ensure the precise positioning of the fixing pins 6. The connecting plate 7 enables the simultaneous installation and removal of the fixing pins 6 on the same side, reducing operation steps and improving the convenience of installation and removal.

[0024] In this example, the mounting base 2 includes a bracket 3, which is fixedly installed on one side of the inlet guide tube body 1. A base 4 is fixedly connected to the end of the bracket 3 away from the inlet guide tube body 1. A through hole is provided on the base 4. The base 4 has a frustum-shaped structure and is located below the fixing block 5. The connecting plate 7 is located below the base 4. In this example, the two fixing pins 6 on the same side can be combined with the same connecting plate 7 to form an integral structure or the two fixing pins 6 can be separated. The specific choice can be made according to the actual use needs. The bracket 3 realizes a reasonable spacing arrangement between the inlet guide tube body 1 and the base 4. The frustum-shaped base 4 can enhance the structural stability and load-bearing capacity. The positional arrangement of the base 4, the fixing block 5, and the connecting plate 7 avoids interference between components and ensures smooth disassembly and assembly operations.

[0025] In this example, the fixing mechanism also includes a drive block 9. A reset groove 8 is provided on the top of the fixing block 5, and the drive block 9 is slidably installed within the reset groove 8. A receiving groove 15 is provided on the bottom of the drive block 9. A locking block 11 is symmetrically arranged on the inner side of the receiving groove 15, and one end of the locking block 11 extends into the fixing hole 20. A locking groove 17 adapted to the locking block 11 is provided on the outer wall of the fixing pin 6. A fixing post 14 is symmetrically arranged on the outer side of the locking block 11 at one end relative to its inner side. Drive grooves 14 adapted to the fixing posts 14 are symmetrically arranged on the front and rear walls of the drive block 9. 6. The drive groove 16 is connected to the receiving groove 15. The lower end of the drive block 9 is connected to a baffle 19. The bottom of the baffle 19 is fixedly connected to the bottom of the reset groove 8 by a spring 12. The reset groove 8 provides a sliding guide for the drive block 9. The receiving groove 15 realizes the reasonable arrangement of the card block 11. The drive block 9 can quickly drive the card block 11 to disengage from or be inserted into the card slot 17 through the cooperation of the drive groove 16 and the fixed post 14. The spring 12 and the baffle 19 realize the automatic reset of the drive block 9 without additional operation, further improving the fixing and unlocking efficiency.

[0026] In this example, a support plate 10 is provided inside the receiving groove 15, and the support plate 10 is located between the locking block 11 and the baffle 19. The top surface of the support plate 10 is in contact with the bottom surface of the locking block 11. The support plate 10 is fixedly connected to the inner wall of the reset groove 8. A guide post 13 is provided at the bottom of the reset groove 8, and the upper end of the guide post 13 passes through the baffle 19 and the support plate 10. The support plate 10 provides support and sliding guidance for the locking block 11 to prevent the locking block 11 from shifting. The guide post 13 can limit the sliding trajectory of the baffle 19 and the driving block 9 to prevent them from tilting and jamming, and ensure the stability and reliability of the movement of each component of the fixing mechanism.

[0027] In this example, the front section of the locking block 11 is a right-angled trapezoid, and the top of the fixing pin 6 is provided with a pressing surface 18 that is adapted to the locking block 11. The right-angled trapezoidal locking block 11 cooperates with the adapted pressing surface 18 so that the fixing pin 6 can automatically press the locking block 11 to retract when it is inserted, without the need for manual operation of the drive block 9, thereby realizing the quick pre-positioning of the fixing pin 6 and simplifying the installation process.

[0028] In this example, the two drive slots 16 on the same side are arranged in a figure-eight shape, and the drive slots 16 are straight slots. The receiving slot 15 is cross-shaped, and the inner wall of the receiving slot 15 is slidably connected to the support plate 10. The total length of the inlet guide cylinder body 1 is 1234mm. The figure-eight-shaped drive slots 16 can ensure that the two locking blocks 11 are synchronously driven to retract inward when the drive block 9 moves down. The straight slot shape is easy to process and the transmission is stable. The cross-shaped receiving slot 15 is adapted to the assembly requirements of the locking block 11 and the support plate 10.

[0029] During use, the structure is optimized for reuse by shortening the length of the guide tube to reduce wear and by symmetrical installation on both sides. Combined with a quick fixing mechanism to simplify disassembly and assembly, a collaborative mechanism of "wear reduction - reuse - efficient maintenance" is formed, which ultimately reduces the consumption cost of the inlet guide tube and extends its service life.

[0030] When the equipment is in use, the inlet guide tube body 1, which is shortened to 1234mm in length, is fitted and installed with the piercing machine through the mounting base 2. Its core principle is to reduce the contact stroke of the tube blank in the guide tube by shortening the length of the guide tube, thereby reducing the frictional force on the bottom of the inlet guide tube body 1 caused by the weight of the tube blank and the rotational motion, thus reducing wear from the source. At the same time, the symmetrical design of the mounting base 2 on both sides allows the inlet guide tube body 1 to be flipped directly after the bottom of one side is worn, and the unworn side can be switched to the working position for continued use, realizing bidirectional reuse of the guide tube.

[0031] The working principle of the fixing mechanism revolves around the process of "quick unlocking - positioning and installation - automatic limit": During unlocking, the drive block 9 is pushed down along the reset groove 8. Through the V-shaped drive groove 16 and the fixed column 14 on the locking block 11, the two locking blocks 11 are driven to retract inward synchronously, disengaging from the locking groove 17 of the fixing pin 6. At the same time, the baffle 19 slides down along the guide column 13 to squeeze the spring 12, thus removing the fixing pin 6 and completing the disassembly. During installation, after flipping the guide tube and aligning it with the installation position, the fixing pin 6 is inserted. Its top pressing surface 18 squeezes the locking block 11 to retract. When the locking groove 17 is aligned with the locking block 11, the spring 12 pushes the baffle 19 to reset the drive block 9. The locking block 11 is inserted into the locking groove 17 to achieve the limit of the fixing pin 6, completing the quick fixing of the guide tube. This reduces the time spent on disassembling and assembling the inlet guide tube body 1, improves work efficiency, and solves the problem of long downtime caused by disassembling and assembling the inlet guide tube body 1, which reduces production efficiency.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A perforating machine inlet guide tube, comprising an inlet guide tube body (1), characterized in that: The inlet guide tube body (1) is symmetrically provided with mounting bases (2) at one end. The mounting base (2) is provided with several through holes in a rectangular distribution at the end away from the inlet guide tube body (1). The mounting base (2) is provided with fixing mechanisms at symmetrical positions on the front and rear sides. The fixing mechanism includes a fixing block (5), which is located on one side of the mounting base (2). The top of the fixing block (5) is symmetrically provided with fixing holes (20) corresponding to the through holes. Fixing pins (6) are provided in the fixing holes (20). The lower ends of the two fixing pins (6) on the same side pass through the fixing holes (20) and the through holes and are connected to a connecting plate (7).

2. The inlet guide tube of a perforating machine according to claim 1, characterized in that: The mounting base (2) includes a bracket (3), which is fixedly installed on one side of the inlet guide tube body (1). A base (4) is fixedly connected to one end of the bracket (3) away from the inlet guide tube body (1). The through hole is provided on the base (4). The base (4) has a frustum-shaped structure. The base (4) is located below the fixing block (5). The connecting plate (7) is located below the base (4).

3. The inlet guide tube of a perforating machine according to claim 2, characterized in that: The fixing mechanism also includes a drive block (9). The top of the fixing block (5) is provided with a reset groove (8). The drive block (9) is slidably installed in the reset groove (8). The bottom of the drive block (9) is provided with a receiving groove (15). The receiving groove (15) is symmetrically provided with a locking block (11) on the inner side. The locking block (11) extends to the fixing hole (20) at one end relative to the outer side. The outer wall of the fixing pin (6) is provided with a locking groove (17) that matches the locking block (11). The locking block (11) is symmetrically provided with a fixing post (14) on the outer side of one end relative to the inner side. The front and rear walls of the drive block (9) are respectively symmetrically provided with drive grooves (16) that match the fixing post (14). The drive grooves (16) are connected to the receiving groove (15). The lower end of the drive block (9) is connected with a baffle (19). The bottom of the baffle (19) is fixedly connected to the bottom of the reset groove (8) by a spring (12).

4. The inlet guide tube of a perforating machine according to claim 3, characterized in that: The receiving groove (15) is provided with a support plate (10) on the inner side, and the support plate (10) is located between the card block (11) and the baffle (19). The top surface of the support plate (10) is in contact with the bottom surface of the card block (11). The support plate (10) is fixedly connected to the inner wall of the reset groove (8). The bottom of the reset groove (8) is provided with a guide post (13), and the upper end of the guide post (13) passes through the baffle (19) and the support plate (10).

5. The inlet guide tube of a perforating machine according to claim 4, characterized in that: The front section of the card block (11) is a right trapezoidal shape, and the top of the fixing pin (6) is provided with a pressing surface (18) that is adapted to the card block (11).

6. The inlet guide tube of a perforating machine according to claim 5, characterized in that: The two drive slots (16) on the same side are arranged in a figure-eight shape, and the drive slots (16) are straight slots. The receiving slot (15) is cross-shaped. The inner wall of the receiving slot (15) is slidably connected to the support plate (10). The total length of the inlet guide tube body (1) is 1234mm.

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