Cooling and shaping equipment for PVC (polyvinyl chloride) corrugated pipe

Abstract

The utility model belongs to the technical field of corrugated pipe cooling, and particularly relates to PVC (polyvinyl chloride) corrugated pipe cooling and shaping equipment which comprises a transmission mechanism and a corrugated mold, the pre-cooling unit is located in the area, close to the right end, of the transmission mechanism, a hollow belt and a positioning frame below the hollow belt are arranged in the pre-cooling unit, and an external connecting pipe is arranged above the hollow belt and connected to the outside to be connected with a cooling medium; an arc-shaped hollow groove and a side groove are formed in the corrugated mold, and through grooves in butt joint with the positioning frame are formed in bosses at the upper end and the lower end of the corrugated mold and close to the side for clamping the corrugated pipe; the precooling units are symmetrically distributed at the upper end and the lower end, and the lower precooling unit is used for discharging the cooling medium in the arc-shaped hollow groove. According to the utility model, the corrugated pipe can be pre-cooled and shaped after being extruded, so that the temperature of the corrugated pipe can be reduced before the corrugated pipe is conveyed to cooling equipment, and the conditions of collision during conveying and deformation caused by extrusion of foreign objects are prevented.

Description

Technical Field

[0001] This utility model belongs to the field of corrugated pipe cooling technology, and in particular relates to a PVC corrugated pipe cooling and shaping device. Background Technology

[0002] A bellows is a tubular elastic sensitive element made of foldable corrugated sheets connected along the folding and stretching direction. Heat treatment is an essential process in the manufacturing of bellows. Therefore, the bellows are at a high temperature after processing and need to be cooled, so a cooling device is required.

[0003] Currently, corrugated pipes are mostly cooled by bath water or spray after extrusion. However, regardless of the method used, the extruded corrugated pipes are hot and are prone to deformation before entering the cooling zone, which affects the quality.

[0004] To address the aforementioned issues, this application proposes a PVC corrugated pipe cooling and shaping device. Utility Model Content

[0005] The purpose of this invention is to provide a PVC corrugated pipe cooling and shaping device, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a PVC corrugated pipe cooling and shaping device, including a transmission mechanism and a corrugated mold;

[0008] The precooling unit is located in the area adjacent to the right end of the transmission mechanism. It has a hollow belt and a positioning frame below it. An external pipe is provided above the hollow belt to connect to the outside and access the cooling medium.

[0009] The corrugated mold has an arc-shaped hollow groove and a side groove inside, adjacent to the side that holds the corrugated pipe. The bosses at the upper and lower ends of the corrugated mold have through grooves for docking positioning frames inside.

[0010] The precooling units are symmetrically distributed at the top and bottom, and the lower precooling unit is used to discharge the cooling medium inside the arc-shaped hollow tank.

[0011] Furthermore, the through groove is provided with a paddle, which is symmetrically distributed on the two inner walls of the through groove, and the two paddles are joined together to form a seal.

[0012] Furthermore, the precooling unit is equipped with a fixed frame inside, which is engaged with the inner side of the hollow belt on the outside. The fixed frame is provided with a support column extension fixed support point above it, which is connected to external equipment.

[0013] Furthermore, four guide tubes are provided below the hollow strip to correspond to the positioning frame, and the distance between adjacent guide tubes is equal to the distance between the centers of adjacent bosses.

[0014] Furthermore, an on / off valve is provided above the hollow strip to control the upper end passage of the guide tube.

[0015] Furthermore, the guide tube consists of two sections, upper and lower, connected by a folded tube.

[0016] Furthermore, the upper end of the positioning frame is provided with a branch pipe connected to the lower end of the guide pipe.

[0017] Furthermore, the upper and lower sections of the guide tube are provided with convex rings on their opposite outer sides, and electric telescopic devices are provided between adjacent convex rings.

[0018] This utility model has the following beneficial effects:

[0019] This invention utilizes an arc-shaped hollow groove inside the corrugated mold and the docking of the positioning frame to pre-cool and shape the corrugated pipe by introducing a cooling medium through an external pipe before it is extruded into the cooling equipment. This pre-cools and shapes the corrugated pipe, preventing it from easily deforming and allowing it to smoothly enter the cooling equipment for subsequent cooling.

[0020] This invention utilizes guide tubes spaced at equal intervals at the bottom of the hollow belt, with the intervals being equal to the intervals between the centers of adjacent corrugated dies. This allows each corrugated die to pre-cool and shape the internal corrugated tubes when it moves to a predetermined area, thereby forming a cycle that is suitable for the continuity of extrusion operations.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the combined structure of the corrugated mold and the precooling unit of this utility model.

[0025] Figure 3 This is a schematic diagram of the internal structure of the corrugated mold of this utility model;

[0026] Figure 4 This is a schematic diagram of the precooling unit structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the combined structure of the guide tube and positioning frame of this utility model;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] In the picture:

[0030] 1. Transmission mechanism; 2. Corrugated mold; 3. Pre-cooling unit;

[0031] 210. Arc-shaped hollow groove; 211. Side groove; 220. Boss; 221. Through groove; 222. Paddle;

[0032] 310. Fixing frame; 320. Hollow belt; 321. External connecting pipe; 322. On / off valve; 330. Guide pipe; 331. Folded pipe; 332. Convex ring; 333. Electric expansion joint; 340. Positioning frame; 341. Branch pipe. Detailed Implementation

[0033] 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.

[0034] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Please see Figure 1-5 As shown, this utility model is a PVC corrugated pipe cooling and shaping device, including a transmission mechanism 1 and a corrugated mold 2;

[0036] The precooling unit 3 is located in the area adjacent to the right end of the transmission mechanism 1. This area is the front end area of ​​the corrugated tube extrusion direction. The precooling unit 3 is equipped with a hollow belt 320 and a positioning frame 340 below it. An external pipe 321 is provided above the hollow belt 320 to connect to the outside and access the cooling medium. There are four positioning frames 341, each corresponding to the corrugated mold 2 below.

[0037] The corrugated mold 2 has an arc-shaped hollow groove 210 and a side groove 211 inside. The side groove 211 is located inside the tooth of the inner arc surface of the corrugated mold 2. The two grooves are close to the side of the corrugated pipe and can transmit the low temperature of the cooling medium at close range. The bosses 220 at the upper and lower ends of the corrugated mold 2 have through grooves 221 for docking positioning frame 340 inside.

[0038] The precooling units 3 are symmetrically distributed at the upper and lower ends, and the lower precooling unit 3 is used to discharge the cooling medium inside the arc-shaped hollow groove 210, while the upper precooling unit 3 is used to inject the cooling medium.

[0039] Preferably, the through groove 221 is provided with a paddle 222 inside. The paddle 222 is symmetrically distributed on the two inner walls of the through groove 221. The two paddles 222 are connected to each other to form a seal. When the cooling medium above is injected, it automatically pushes the two paddles 222 downward. When the cooling medium below is drawn, it still pushes the two paddles 222 downward. Then the paddles 222 use their own elasticity to reset and form a seal.

[0040] Preferably, the precooling unit 3 is further provided with a fixed frame 310 inside, which is engaged with the inner side of the hollow belt 320 on the outside. The hollow belt 320 is driven to move by the drive motor built into the fixed frame 310. The fixed frame 310 is provided with a support column extension fixed support point above it, which is suspended from the cooling medium storage device, so that the outer pipe 321 swings with the hollow belt 320 when it moves.

[0041] Preferably, four guide tubes 330 are provided below the hollow strip 320 corresponding to the positioning frame 340. The distance between adjacent guide tubes 330 is equal to the distance between the centers of adjacent bosses 220, so that each corrugated mold 2 can pre-cool the internal corrugated tube when it moves to the predetermined area.

[0042] Preferably, an on / off valve 322 is provided above the hollow strip 320 to control the upper passage of the guide pipe 330. When the positioning frame 340 is docked with the through groove 221, the passage is opened to allow the cooling medium to be injected into the guide pipe 330.

[0043] Preferably, the guide tube 330 consists of two sections, upper and lower, connected by a folded tube 331. Both sections have outwardly extending protruding rings 332 on their opposite outer sides. An electric telescopic device 333 is located below the upper protruding ring 332, with its movable end connected to the lower protruding ring 332.

[0044] Preferably, the upper end of the positioning frame 340 is provided with three branch pipes 341 connected to the lower end of the guide pipe 330, and the lower ends of the three branch pipes 341 are evenly distributed on the positioning frame 340.

[0045] It is understandable that this invention can pre-cool and shape the corrugated pipe after extrusion, so that it can reduce its temperature before being transported to the cooling equipment, thereby preventing deformation caused by bumps or external pressure during transportation.

[0046] A specific application of the operation process in this embodiment is as follows: First, when the corrugated tube is extruded into the corrugated mold 2 and moves to the adjacent right end area of ​​the transmission mechanism 1, the rotation of the hollow belt 320 drives the guide tube 330 to move to the center of the boss 220 at the upper end of the corrugated mold 2. Then, the electric telescopic device 333 presses down the guide tube 330 in the lower section area, so that the positioning frame 340 is inserted into the inside of the through groove 221. At this time, the external cooling medium can be input into the inside of the arc-shaped hollow groove 210 through the outer pipe 321 and fill the side groove 211. At the same time, the bottom of the corrugated mold 2 performs the same docking operation, and the positioning frame 340 at the bottom is used to suck up the cooling medium inside the arc-shaped hollow groove 210, thereby forming an in-out cycle and ensuring that the cooling medium inside the corrugated mold 2 is emptied after the corrugated tube in the pre-cooled area is removed. Thus, the extruded corrugated tube can be subjected to continuous pre-cooling and shaping treatment.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A PVC corrugated pipe cooling and shaping device, characterized in that: Includes a transmission mechanism (1) and a corrugated mold (2); The precooling unit (3) is located in the area adjacent to the right end of the transmission mechanism (1). It has a hollow belt (320) and a positioning frame (340) below it. An external pipe (321) is provided above the hollow belt (320) to connect to the outside and access the cooling medium. The corrugated mold (2) has an arc-shaped hollow groove (210) and a side groove (211) inside, adjacent to the side that holds the corrugated pipe. The bosses (220) at the upper and lower ends of the corrugated mold (2) have through grooves (221) for docking positioning frames (340). The precooling unit (3) is symmetrically distributed at both the upper and lower ends, and the lower precooling unit (3) is used to discharge the cooling medium inside the arc-shaped hollow trough (210).

2. The PVC corrugated pipe cooling and shaping equipment according to claim 1, characterized in that: The through groove (221) is provided with a paddle (222) inside. The paddle (222) is symmetrically distributed on the two inner walls of the through groove (221), and the two paddles (222) are connected to each other to form a seal.

3. The PVC corrugated pipe cooling and shaping equipment according to claim 1, characterized in that: The precooling unit (3) is also equipped with a fixed frame (310) inside, which is engaged with the inner side of the hollow belt (320) on the outside. The fixed frame (310) is provided with a support column extension fixed support point above it, which is connected to the equipment outside.

4. The PVC corrugated pipe cooling and shaping equipment according to claim 1, characterized in that: The hollow strip (320) has four guide tubes (330) below it, corresponding to the positioning frame (340), and the distance between adjacent guide tubes (330) is equal to the distance between the centers of adjacent bosses (220).

5. The PVC corrugated pipe cooling and shaping equipment according to claim 4, characterized in that: An on / off valve (322) is provided above the hollow strip (320) to control the upper passage of the guide tube (330).

6. The PVC corrugated pipe cooling and shaping equipment according to claim 4, characterized in that: The guide tube (330) consists of two sections, upper and lower, which are connected by a folded tube (331).

7. The PVC corrugated pipe cooling and shaping equipment according to claim 4, characterized in that: The upper end of the positioning frame (340) is provided with a branch pipe (341) connected to the lower end of the guide pipe (330).

8. The PVC corrugated pipe cooling and shaping equipment according to claim 6, characterized in that: The guide tube (330) has a raised ring (332) on the outer side of the opposite surface of the upper and lower sections, and an electric telescopic device (333) is provided between adjacent raised rings (332).

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