Heat-resistant and wear-resistant plug with detachable cooling structure

Abstract

The utility model discloses a heat-resistant and wear-resistant top with a detachable cooling structure, which comprises a top, a through cavity is arranged in the top, a hydraulic cylinder is fixedly connected to the lower portion of the through cavity, a fixing head is fixedly connected to the upper portion of the hydraulic cylinder, a connecting ring is fixedly connected between the fixing head and the lower side of the through cavity, and the connecting ring is fixedly connected to the lower side of the through cavity. Two sets of sealing rings are slidably connected to the outer side of the connecting ring, a baffle ring is fixedly connected between the sealing rings, six sets of liquid channels communicated with the through cavity are formed in the top head, four sets of connecting plates are fixedly connected to the lower portion of the sealing ring on the lower side, and a mounting rod is fixedly connected to the lower portion of the top head. And the lower portion of the connecting plate penetrates through the mounting rod to be fixedly connected with a pushing plate, a pushing rod is slidably connected to the outer side of the mounting rod, and a pushing block is slidably connected into the pushing rod, so that intermittent heat exchange of cooling liquid to the interior of the plug is achieved, and the heat resistance of the plug is improved.

Description

Technical Field

[0001] This utility model relates to the field of mandrel technology, specifically a heat-resistant and wear-resistant mandrel with a detachable cooling structure. Background Technology

[0002] A piercing mandrel is an important tool used in metal piercing processes, mainly composed of a working section and a tail assembly section. The working section includes a piercing cone section, a rolling cone section, and a reverse cone section, whose inner hole shape is similar to the outer surface shape, thus forming a piercing mandrel with uniform wall thickness. The design of the piercing mandrel has a significant impact on the stability of the piercing process and product quality.

[0003] The working environment of perforated mandrels is extremely harsh, with service temperatures typically between 900℃ and 1300℃. They are subjected to a combination of axial pressure, radial stress, and rotational friction. Under these conditions, the surface hardness of traditional mandrels will decrease significantly, leading to plastic deformation. Utility Model Content

[0004] The purpose of this invention is to provide a heat-resistant and wear-resistant mandrel with a detachable cooling structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat-resistant and wear-resistant mandrel with a detachable cooling structure, comprising a mandrel, wherein a through cavity is provided inside the mandrel, a hydraulic cylinder is fixedly connected to the lower part of the through cavity, a fixed head is fixedly connected to the upper part of the hydraulic cylinder, a connecting ring is fixedly connected between the fixed head and the lower side of the through cavity, two sets of sealing rings are slidably connected to the outer side of the connecting ring, a retaining ring is fixedly connected between the sealing rings, six sets of liquid channels communicating with the through cavity are provided inside the mandrel, four sets of connecting plates are fixedly connected to the lower part of the sealing ring on the lower side, an installation rod is fixedly connected to the lower part of the mandrel, a push plate is fixedly connected to the lower part of the connecting plate through the installation rod, a push rod is slidably connected to the outer side of the installation rod, and a push block is slidably connected inside the push rod.

[0006] Preferably, the outer side of the three sets of liquid channels on one side is threaded with a sealing screw.

[0007] Preferably, a number of heat dissipation fins are fixedly connected to the outside of the connecting ring, and the heat dissipation fins are slidably connected to the inside of the sealing ring.

[0008] Preferably, a spring is fixedly connected between the lower sealing ring and the inner wall of the cavity, and the spring is sleeved on the outside of the connecting ring.

[0009] Preferably, the push rod has two sets of limiting grooves inside, and limiting blocks are fixedly connected to both sides of the push block, with the limiting blocks slidably connected inside the limiting grooves.

[0010] Preferably, six sets of support frames are fixedly connected between the middle part of the connecting ring and the through cavity.

[0011] Preferably, the lower part of the top head has three sets of first receiving grooves for cooperating with the sealing screws, and the lower middle part of the mounting rod has a second receiving groove for cooperating with the push plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model injects coolant into the three sets of liquid channels on the left side and seals the coolant with a sealing screw and a retaining ring. The heat at the top head is transferred to the connecting ring through the fixed head. When the push rod moves the top head, it moves the steel pipe to be processed. When the top head is in place, the push block moves towards the mounting rod due to inertia and pushes the connecting plate through the push plate. The connecting plate moves the retaining ring upward through the lower sealing ring, allowing the coolant in the three sets of liquid channels on the left side to flow out smoothly. After carrying away the heat, it flows out through the three sets of liquid channels on the right side, realizing intermittent heat exchange between the coolant and the inside of the top head, and improving the heat resistance of the top head.

[0014] 2. This utility model also uses a hydraulic cylinder to drive the fixed head to press against the inside of the top head, providing support for the top head. When the top head deforms, the hydraulic cylinder moves along with it, improving the structural strength of the top head and preventing damage to the inside of the top head. Attached Figure Description

[0015] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a second-view three-dimensional structural cross-sectional view of the present invention;

[0017] Figure 3 This is a cross-sectional view of the three-dimensional structure of this utility model from a third perspective.

[0018] In the diagram: 1. Top head; 2. Mounting rod; 3. Through cavity; 4. Second receiving groove; 5. Hydraulic cylinder; 6. Fixed head; 7. Connecting ring; 8. Liquid passage; 9. Retaining ring; 10. Sealing ring; 11. Connecting plate; 12. Push plate; 13. Push rod; 14. Push block; 15. Restricting groove; 16. Restricting block; 17. Heat dissipation fins; 18. Support frame; 19. Spring; 20. Sealing screw; 21. First receiving groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 This utility model provides a technical solution: a heat-resistant and wear-resistant mandrel with a detachable cooling structure, including a mandrel 1. A cavity 3 is formed inside the mandrel 1. A hydraulic cylinder 5 is threaded onto the lower part of the cavity 3. A fixing head 6 is fixedly welded to the upper part of the hydraulic cylinder 5. The fixing head 6 presses against the interior of the mandrel 1, supporting the head of the mandrel 1 and preventing damage to the head. A connecting ring 7 is fixedly welded between the fixing head 6 and the lower side of the cavity 3. Heat from the mandrel 1 is transferred to the connecting ring 7 through the fixing head 6. Two sets of sealing rings 10 are slidably installed on the outer side of the connecting ring 7. A retaining ring 9 is fixedly welded between the sealing rings 10. Six sets of liquid channels 8 communicating with the cavity 3 are formed inside the mandrel 1. When the mandrel 1 is installed and used, the three sets of liquid channels 8 on the left are located on the upper side, and the three sets of liquid channels 8 on the right are located on the lower side. Coolant is injected into the three sets of liquid channels 8 on the left beforehand, and the coolant flows through the three sets of liquid channels 8 on the left... The liquid flows into the cavity 3 through channel 8, carrying the heat from the connecting ring 7 and flowing out through the three sets of liquid channels 8 on the right. Four sets of connecting plates 11 are fixedly welded to the lower part of the lower sealing ring 10. An installation rod 2 is fixedly welded to the lower part of the top head 1. A push plate 12 is fixedly welded to the lower part of the connecting plate 11 through the installation rod 2. A push rod 13 is slidably installed on the outside of the installation rod 2. A push block 14 is slidably installed inside the push rod 13. When the push rod 13 pushes the top head 1 to move, the top head 1 pushes the steel pipe to be processed to move. When the top head 1 moves to the position, the push block 14 moves towards the installation rod 2 due to inertia, and pushes the connecting plate 11 to move through the push plate 12. The connecting plate 11 moves the retaining ring 9 upward through the lower sealing ring 10, so that the coolant in the three sets of liquid channels 8 on the left can flow out smoothly. When the push rod 13 retracts, the push block 14 moves away from the installation rod 2 due to inertia, so that the push block 14 returns to the initial position.

[0021] A sealing screw 20 is threaded onto the outer side of three sets of liquid channels 8 on one side, which can seal the liquid channels 8 after the coolant is injected; several sets of heat dissipation fins 17 are fixedly welded to the outer side of the connecting ring 7. The heat dissipation fins 17 are slidably installed inside the sealing ring 10 to improve the heat dissipation of the connecting ring 7, so that the coolant can remove more heat at a time; a spring 19 is fixedly welded between the lower sealing ring 10 and the inner wall of the cavity 3. The spring 19 is sleeved on the outer side of the connecting ring 7. When the push rod 13 retracts, the stretched spring 19 pulls the sealing ring 10 on one side, so that the retaining ring 9 re-seals the liquid channel 8 to prevent the coolant from continuing to flow out; two sets of limiting grooves 15 are opened inside the push rod 13, and the push block Limiting blocks 16 are fixedly welded on both sides of the push block 14. The limiting blocks 16 are slidably installed inside the limiting groove 15 to limit the movement of the push block 14 and prevent the push block 14 from rotating. Six sets of support frames 18 are fixedly welded between the middle of the connecting ring 7 and the through cavity 3 to support the connecting ring 7 and the hydraulic cylinder 5 and prevent the connecting ring 7 from shifting. The lower part of the top head 1 is provided with three sets of first receiving grooves 21 that cooperate with the sealing screw 20. The lower middle part of the mounting rod 2 is provided with a second receiving groove 4 that cooperates with the push plate 12. This is used to accommodate the nut of the sealing screw 20 and the protruding push plate 12, and to prevent the sealing screw 20 and the push plate 12 from being exposed and damaged by collision.

[0022] Working principle: In use, the hydraulic cylinder 5 drives the fixed head 6 to press against the inside of the top head 1, providing support for the head of the top head 1. The hydraulic cylinder 5 moves along with the top head 1 when it deforms, increasing the structural strength of the top head 1. Coolant is injected into the three sets of liquid channels 8 on the left side, and the coolant is sealed by the sealing screw 20 and the retaining ring 9. Heat from the top head 1 is transferred to the connecting ring 7 through the fixed head 6. When the push rod 13 pushes the top head 1 to move, it causes the top head 1 to push the steel pipe to be processed to move. When the top head 1 reaches its position, the push block 14 moves towards the mounting due to inertia. The rod 2 moves and pushes the connecting plate 11 through the push plate 12. The connecting plate 11 moves the retaining ring 9 upward through the lower sealing ring 10, allowing the coolant in the three sets of liquid channels 8 on the left to flow out smoothly. After carrying away the heat, it flows out through the three sets of liquid channels 8 on the right. When the push rod 13 retracts, the push block 14 moves away from the mounting rod 2 due to inertia, causing the push block 14 to return to its initial position. The stretched spring 19 pulls the sealing ring 10 on one side, causing the retaining ring 9 to re-seal the liquid channel 8, preventing the coolant from continuing to flow out, thus realizing intermittent heat exchange between the coolant and the inside of the top head 1.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat-resistant and wear-resistant mandrel with a detachable cooling structure, comprising a mandrel (1), characterized in that: The top head (1) has a through cavity (3) inside. A hydraulic cylinder (5) is fixedly connected to the lower part of the through cavity (3). A fixed head (6) is fixedly connected to the upper part of the hydraulic cylinder (5). A connecting ring (7) is fixedly connected between the fixed head (6) and the lower side of the through cavity (3). Two sets of sealing rings (10) are slidably connected to the outside of the connecting ring (7). A retaining ring (9) is fixedly connected between the sealing rings (10). The top head (1) has six sets of liquid channels (8) communicating with the through cavity (3) inside. Four sets of connecting plates (11) are fixedly connected to the lower part of the sealing ring (10) on the lower side. An installation rod (2) is fixedly connected to the lower part of the top head (1). A push plate (12) is fixedly connected to the lower part of the connecting plate (11) through the installation rod (2). A push rod (13) is slidably connected to the outside of the installation rod (2). A push block (14) is slidably connected inside the push rod (13).

2. The heat-resistant and wear-resistant mandrel with a detachable cooling structure according to claim 1, characterized in that: The outer side of the three sets of liquid channels (8) on one side is threaded with a sealing screw (20).

3. A heat-resistant and wear-resistant mandrel with a detachable cooling structure according to claim 1, characterized in that: Several sets of heat dissipation fins (17) are fixedly connected to the outside of the connecting ring (7), and the heat dissipation fins (17) are slidably connected to the inside of the sealing ring (10).

4. A heat-resistant and wear-resistant mandrel with a detachable cooling structure according to claim 1, characterized in that: A spring (19) is fixedly connected between the lower sealing ring (10) and the inner wall of the cavity (3), and the spring (19) is sleeved on the outside of the connecting ring (7).

5. A heat-resistant and wear-resistant mandrel with a detachable cooling structure according to claim 1, characterized in that: The push rod (13) has two sets of limiting grooves (15) inside. The push block (14) has limiting blocks (16) fixedly connected to both sides. The limiting blocks (16) are slidably connected inside the limiting grooves (15).

6. A heat-resistant and wear-resistant mandrel with a detachable cooling structure according to claim 1, characterized in that: Six sets of support frames (18) are fixedly connected between the middle part of the connecting ring (7) and the through cavity (3).

7. A heat-resistant and wear-resistant mandrel with a detachable cooling structure according to claim 2, characterized in that: The top head (1) has a first receiving groove (21) with three sets of sealing screws (20) at the lower part, and the mounting rod (2) has a second receiving groove (4) with a push plate (12) at the lower middle part.

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