Extrusion die for finned tube machining

Abstract

The utility model discloses an extrusion die for finned tube processing, and relates to the technical field of finned tube processing, the extrusion die comprises a lower die holder, an upper die holder and a mounting assembly, four corners of the upper end of the lower die holder are provided with support columns, the top of each support column is provided with the upper die holder, the middle part of the upper end of the lower die holder is provided with the mounting assembly, and the mounting assembly is provided with a plurality of support columns. The mounting assembly comprises a lower mold, butt joint blocks, limiting through grooves, limiting cylinders, limiting rods, reset springs and butt joint grooves, the butt joint blocks are mounted on the two sides of the lower end of the lower mold, the limiting through grooves are formed in the middle ends of the interiors of the butt joint blocks, the limiting cylinders are mounted on the two sides of the exterior of the lower mold base, and the limiting rods are arranged in the limiting cylinders; and reset springs are additionally arranged in the limiting cylinders outside the limiting rods, butt joint grooves are formed in the two sides of the interior of the lower die base, and a damping assembly is arranged at the lower end of the upper die base. According to the extrusion die for finned tube machining, dies with different inner cavity sizes can be rapidly replaced, and the initiative of the extrusion die in the using process is improved.

Description

Technical Field

[0001] This utility model relates to the field of finned tube processing technology, specifically to an extrusion die for finned tube processing. Background Technology

[0002] Finned tubes are heat exchange elements that significantly increase the heat exchange area and thus improve heat exchange efficiency by adding fins to the surface of the heat exchange tube. The working principle of finned tubes begins with their unique extrusion molding process. On an extruder, pre-treated material is fed into an extrusion die. The extrusion die is designed with cavities that match the shape of the fins. When the material is subjected to strong extrusion force in the die, its shape gradually changes and is eventually extruded into a fin shape that matches the die cavity. By inserting the fins into the outer surface of the base tube, and then using mechanical or welding methods to tightly connect the fins to the base tube, the processing of the finned tube is completed. In order to improve the processing efficiency of finned tubes, an extrusion die is needed. However, existing extrusion dies still have the following shortcomings:

[0003] When using existing extrusion dies, it is not convenient to quickly change the lower die with different inner cavity sizes, which makes it difficult to change the processing shape of the fins. At the same time, the replacement of the lower die is time-consuming and labor-intensive, resulting in a decrease in the practicality and efficiency of the extrusion die.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed an extrusion die for finned tube processing. Utility Model Content

[0005] The purpose of this invention is to provide an extrusion die for processing finned tubes, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an extrusion die for finned tube processing, comprising a lower die base, an upper die base, and an installation assembly. Support columns are installed at the four corners of the upper end of the lower die base, and the upper die base is installed on the top of the support columns. An installation assembly is provided in the middle of the upper end of the lower die base, and the installation assembly includes a lower die, a mating block, a limiting groove, a limiting cylinder, a limiting rod, a return spring, and a mating groove. Mating blocks are installed on both sides of the lower end of the lower die, and a limiting groove is formed in the middle of the mating block. Limiting cylinders are installed on both sides of the outer surface of the lower die base, and a limiting rod is provided inside the limiting cylinder. A return spring is added inside the limiting cylinder outside the limiting rod. A mating groove is formed on both sides of the inner surface of the lower die base. A shock-absorbing assembly is provided at the lower end of the upper die base.

[0007] Furthermore, the external dimensions of the docking block are adapted to the internal dimensions of the docking groove, and the docking block is connected to the lower mold base through the docking groove.

[0008] Furthermore, the number of the limiting cylinders is set to two, and the two limiting cylinders are symmetrically arranged on both sides of the outer side of the lower mold base along the central axis of the front of the lower mold base.

[0009] Furthermore, the limiting rod and the limiting cylinder are embedded in each other, and the limiting rod return spring is elastically connected to the limiting cylinder.

[0010] Furthermore, the shock absorption assembly includes a hydraulic cylinder, a pressure plate, an upper mold, a mounting block, and an upper receiving block. The pressure plate is installed at the front end of the hydraulic cylinder, and the upper mold is provided at the lower middle of the pressure plate. Mounting blocks are added to both sides of the upper mold, and an upper receiving block is added at the lower middle of the mounting block.

[0011] Furthermore, the shock absorption assembly also includes a mounting groove, a spring damping rod, and a lower support block. The lower mold has mounting grooves on both sides, and a spring damping rod is installed inside the mounting groove. A lower support block is added to the upper end of the spring damping rod.

[0012] Furthermore, the outer side of the pressure plate is horizontally distributed with the outer side of the upper mold, and the pressure plate and the upper mold are fixedly connected by bolts.

[0013] Furthermore, the lower support block is embedded in the mounting groove, and the lower support block is elastically connected to the mounting groove via a spring damping rod.

[0014] This utility model provides an extrusion die for processing finned tubes, which has the following advantages:

[0015] 1. This utility model, through the setting of the installation components, enables the limiting rod and the limiting cylinder to be elastically connected by the return spring when the extrusion die for finned tube processing is used. The lower die is limited and connected to the middle of the upper end of the lower die base by the docking block and the docking groove. At the same time, the internal size of the limiting through groove opened inside the docking block is adapted to the external size of the limiting rod. Thus, the docking block is quickly limited inside the docking groove by the limiting rod and the limiting through groove, thereby quickly completing the installation of the lower die. At the same time, it makes the lower die easy to replace, improving the flexibility and dynamism of the extrusion die during use.

[0016] 2. This utility model, through the setting of the shock-absorbing component, enables the hydraulic cylinder to move the pressure plate during the use of the extrusion die for finned tube processing. Simultaneously, it moves the upper die installed in the middle of the lower end of the pressure plate, fixing the mounting block on both sides of the upper die. The upper support block is installed at the lower end of the mounting block. When the upper die and the lower die are connected, the upper support block enters the mounting grooves opened on both sides of the lower die. At the same time, the lower support block in the mounting groove is elastically connected to the mounting groove through the spring damping rod. Thus, the upper support block and the lower support block work together to achieve shock absorption and buffering during the connection process between the upper die and the lower die, thereby avoiding excessive pressure that could damage the die and extending the overall service life of the extrusion die. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an extrusion die for processing finned tubes according to the present invention.

[0018] Figure 2 This is a three-dimensional unfolded structural diagram of the installation assembly of an extrusion die for processing finned tubes according to this utility model.

[0019] Figure 3 This is a three-dimensional cross-sectional view of the shock-absorbing component of an extrusion die for processing finned tubes according to this utility model.

[0020] In the diagram: 1. Lower mold base; 2. Support column; 3. Upper mold base; 4. Mounting assembly; 401. Lower mold; 402. Connecting block; 403. Limiting slot; 404. Limiting cylinder; 405. Limiting rod; 406. Return spring; 407. Connecting groove; 5. Shock absorption assembly; 501. Hydraulic cylinder; 502. Pressure plate; 503. Upper mold; 504. Mounting block; 505. Upper receiving block; 506. Mounting groove; 507. Spring damping rod; 508. Lower receiving block. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] like Figures 1 to 3As shown, an extrusion die for processing finned tubes includes a lower die base 1, an upper die base 3, and an installation assembly 4. Supporting columns 2 are installed at the four corners of the upper end of the lower die base 1, and the upper die base 3 is installed on the top of the supporting columns 2. The installation assembly 4 is located in the middle of the upper end of the lower die base 1. The installation assembly 4 includes a lower die 401, a mating block 402, a limiting through groove 403, a limiting cylinder 404, a limiting rod 405, a return spring 406, and a mating groove 407. The mating blocks 402 are installed on both sides of the lower end of the lower die 401, and a groove is formed in the middle of the interior of each mating block 402. The lower mold base 1 has a limiting groove 403. Limiting cylinders 404 are installed on both sides of the lower mold base 1, and limiting rods 405 are installed inside the limiting cylinders 404. A return spring 406 is added inside the limiting cylinders 404 outside the limiting rods 405. A mating groove 407 is opened on both sides of the lower mold base 1. The external dimensions of the mating block 402 are adapted to the internal dimensions of the mating groove 407, and the mating block 402 is connected to the lower mold base 1 through the mating groove 407. Two limiting cylinders 404 are provided, and the two limiting cylinders 404 are symmetrically arranged along the central axis of the front of the lower mold base 1. The limiting rods 405 and limiting cylinders 404 are embedded on both sides of the lower mold base 1, and the return springs 406 of the limiting rods 405 and the limiting cylinders 404 are elastically connected. The limiting cylinders 404 are fixedly installed on both sides of the lower mold base 1 by fastening bolts, and the limiting rods 405 are installed inside the limiting cylinders 404. At the same time, the return springs 406 make the limiting rods 405 and the limiting cylinders 404 elastically connected. The external dimensions of the mating blocks 402 added to both sides of the lower mold 401 are consistent with the mating grooves 407 opened on both sides of the lower mold base 1. The internal dimensions are matched, so the lower mold 401 is limited and connected to the middle of the upper end of the lower mold base 1 by the docking block 402 and the docking groove 407. At the same time, the internal dimensions of the limiting through groove 403 opened inside the docking block 402 are matched with the external dimensions of the limiting rod 405. Thus, the docking block 402 is quickly limited inside the docking groove 407 by the limiting rod 405 and the limiting through groove 403, thereby quickly completing the installation of the lower mold 401. This also makes the lower mold 401 easy to replace, improving the flexibility and dynamism of the extrusion mold during use.

[0023] like Figures 1 to 3As shown, a shock-absorbing assembly 5 is provided at the lower end of the upper mold base 3. The shock-absorbing assembly 5 includes a hydraulic cylinder 501, a pressure plate 502, an upper mold 503, a mounting block 504, and an upper support block 505. The pressure plate 502 is installed at the front end of the hydraulic cylinder 501, and the upper mold 503 is provided at the lower middle part of the pressure plate 502. Mounting blocks 504 are added to both sides of the upper mold 503, and an upper support block 505 is added at the lower middle part of the mounting block 504. The shock-absorbing assembly 5 also includes a mounting groove 506 and a spring damper. The lower mold 401 has mounting grooves 506 on both sides inside the rod 507 and the lower receiving block 508. A spring damping rod 507 is installed inside the mounting groove 506, and a lower receiving block 508 is added to the upper end of the spring damping rod 507. The outer side of the pressure plate 502 is horizontally distributed with the outer side of the upper mold 503, and the pressure plate 502 is fixedly connected to the upper mold 503 by bolts. The lower receiving block 508 is embedded in the mounting groove 506, and the lower receiving block 508 is connected to the upper mold 503 by the spring damping rod 507. The mounting slot 506 is elastically connected, and the hydraulic cylinder 501 is fixedly installed on both sides inside the upper mold base 3 by fastening bolts. The pressure plate 502 is also fixedly installed on the front end of the hydraulic cylinder 501 with fastening bolts. When the hydraulic cylinder 501 operates, it drives the pressure plate 502 to move, and at the same time, it drives the upper mold 503 installed in the middle of the lower end of the pressure plate 502 to move, fixing the mounting block 504 on both sides outside the upper mold 503. The upper support block 505 is installed at the lower end of the mounting block 504. When the upper mold 503 and the lower mold 401 are docked, the upper support block 505 enters the mounting slot 506 opened on both sides inside the lower mold 401. At the same time, the lower support block 508 in the mounting slot 506 is elastically connected to the mounting slot 506 through the spring damping rod 507. Thus, the upper support block 505 and the lower support block 508 are used to achieve shock absorption and buffering during the docking process of the upper mold 503 and the lower mold 401, thereby avoiding excessive pressure and damaging the mold, and extending the overall service life of the extrusion mold.

[0024] In summary, the extrusion die for finned tube processing is used by first fixing the support column 2 to the four corners of the upper end of the lower die base 1 with fastening bolts, and then fixing the upper die base 3 to the top of the support column 2 with fastening bolts. The return spring 406 elastically connects the limiting rod 405 and the limiting cylinder 404. The lower die 401 is limited and connected to the middle of the upper end of the lower die base 1 by the mating block 402 and the mating groove 407. Simultaneously, the limiting rod 405, in conjunction with the limiting through groove 403, quickly limits the mating block 402 inside the mating groove 407, thus quickly completing the installation of the lower die 401. Then, the extrusion die is used to... The operation of the pressure cylinder 501 drives the pressure plate 502 to move, which in turn moves the upper mold 503. When the upper mold 503 docks with the lower mold 401, the upper support block 505 enters the mounting grooves 506 opened on both sides inside the lower mold 401. At the same time, the lower support block 508 in the mounting groove 506 is elastically connected to the mounting groove 506 through the spring damping rod 507. Thus, the upper support block 505 and the lower support block 508 work together to achieve shock absorption and buffering during the docking process of the upper mold 503 and the lower mold 401, thereby avoiding excessive pressure that could damage the mold and extending the overall service life of the extrusion mold.

[0025] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An extrusion die for processing finned tubes, comprising a lower die base (1), an upper die base (3), and a mounting assembly (4), characterized in that, The lower mold base (1) is equipped with support columns (2) at its four corners, and an upper mold base (3) is installed on the top of the support columns (2). An installation assembly (4) is provided in the middle of the upper end of the lower mold base (1), and the installation assembly (4) includes a lower mold (401), a docking block (402), a limiting through groove (403), a limiting cylinder (404), a limiting rod (405), a return spring (406), and a docking groove (407). The lower mold (401) is equipped with a docking groove on both sides of its lower end. The connecting block (402) has a limiting through groove (403) in the middle of its interior. The lower mold base (1) has limiting cylinders (404) installed on both sides of its exterior. The limiting cylinders (404) have limiting rods (405) inside their interiors. The limiting cylinders (404) have a reset spring (406) inside their exteriors. The lower mold base (1) has connecting grooves (407) in the interiors on both sides. The upper mold base (3) has a shock-absorbing component (5) at its lower end.

2. The extrusion die for processing finned tubes according to claim 1, characterized in that, The external dimensions of the docking block (402) are adapted to the internal dimensions of the docking groove (407), and the docking block (402) is connected to the lower mold base (1) through the docking groove (407).

3. The extrusion die for processing finned tubes according to claim 1, characterized in that, The number of the limiting cylinders (404) is two, and the two limiting cylinders (404) are symmetrically arranged on both sides of the front center axis of the lower mold base (1).

4. The extrusion die for processing finned tubes according to claim 1, characterized in that, The limiting rod (405) is embedded in the limiting cylinder (404), and the return spring (406) of the limiting rod (405) is elastically connected to the limiting cylinder (404).

5. The extrusion die for processing finned tubes according to claim 1, characterized in that, The shock absorption assembly (5) includes a hydraulic cylinder (501), a pressure plate (502), an upper mold (503), a mounting block (504), and an upper receiving block (505). The hydraulic cylinder (501) is equipped with a pressure plate (502) at its front end, and the upper mold (503) is provided at the lower middle part of the pressure plate (502). Mounting blocks (504) are added to both sides of the upper mold (503), and an upper receiving block (505) is added to the lower middle part of the mounting block (504).

6. The extrusion die for processing finned tubes according to claim 5, characterized in that, The shock absorption assembly (5) also includes a mounting groove (506), a spring damping rod (507), and a lower receiving block (508). The lower mold (401) has mounting grooves (506) on both sides inside, and a spring damping rod (507) is installed inside the mounting groove (506). A lower receiving block (508) is added to the upper end of the spring damping rod (507).

7. The extrusion die for processing finned tubes according to claim 6, characterized in that, The outer side of the pressure plate (502) is horizontally distributed with the outer side of the upper mold (503), and the pressure plate (502) and the upper mold (503) are fixedly connected by bolts.

8. The extrusion die for processing finned tubes according to claim 6, characterized in that, The lower receiving block (508) is embedded in the mounting groove (506), and the lower receiving block (508) is elastically connected to the mounting groove (506) through a spring damping rod (507).

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