Assembled pipe sizing sleeve

Abstract

The utility model provides an assembled pipe sizing sleeve, and belongs to the technical field of pipe production auxiliary devices. The problem that in the prior art, a sizing piece on a sizing sleeve is difficult to disassemble is solved. The assembled pipe sizing sleeve comprises a base, a plurality of positioning rods and a plurality of sizing blocks, the positioning rods are arranged in parallel in the axial direction of the base, the sizing blocks are connected to the positioning rods in a sleeving mode at the same time, each sizing block comprises a polygonal block and a plurality of corner blocks, and first notches are formed in the corners of the polygonal blocks in a concave mode. Each corner block is provided with a second notch which is arranged in a concave mode, the corner blocks are detachably connected to the corners of the polygonal block respectively, and the first notches and the second notches enclose to form sleeving holes for the positioning rods to penetrate through. The pipe sizing sleeve has the advantage that the sizing sheet of the pipe sizing sleeve can be quickly disassembled and assembled.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary devices for pipe production, and relates to an assembled pipe sizing sleeve. Background Technology

[0002] Sizing sleeves are mainly used in the extrusion molding process of pipes to ensure that the molten plastic can enter the sizing device for molding and cooling in a uniform and stable manner. For example, Chinese patent literature discloses a nylon pipe sizing sleeve (application number: 202222089869.0), which includes a first ring body and a first inlet pipe. Several connecting rods are provided on the outer side of the first ring body, and several sizing plates are provided on the connecting rods at intervals. Each sizing plate has a sizing hole for the pipe to enter. The first inlet pipe, the second inlet pipe, and the sizing hole are coaxially arranged.

[0003] The above-mentioned nylon tube sizing sleeve has the following shortcomings during use: During disassembly, because the sizing plate and the connecting rod are very tightly fitted, even a slight angle between the three socket holes on the sizing plate and the connecting rod will generate great resistance. Therefore, during disassembly, the three socket holes on the sizing plate and the connecting rod need to be kept coaxial, that is, the sizing plate and the connecting rod must be completely perpendicular before being pulled outward. During the removal process, it is necessary to use external force to strike the edges and corners of the sizing plate to overcome the resistance between the sizing plate and the connecting rod. Under these circumstances, it is difficult to ensure that there is no angle between the three socket holes on the sizing plate and the connecting rod. Moreover, striking the sizing plate can easily cause the sizing plate to bend and deform. When the tube blank passes through the sizing hole in the center of the sizing plate, it is easy to cause jamming and breakage, affecting production and making the disassembly of the sizing plate on the existing sizing sleeve difficult. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an assembled pipe sizing sleeve. The technical problem this invention aims to solve is how to achieve rapid assembly and disassembly of the sizing plates in the pipe sizing sleeve.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An assembled pipe sizing sleeve includes a base, a plurality of positioning rods arranged parallel to the axial direction of the base, and a plurality of sizing blocks respectively sleeved on the positioning rods. The sizing block is characterized in that each sizing block includes a polygonal block and a plurality of corner blocks. Each corner of the polygonal block has a recessed first notch, and each corner block has a recessed second notch. Each corner block is detachably connected to each corner of the polygonal block, and the first and second notches together form a sleeve hole for the positioning rods to pass through.

[0007] The sizing block of this assembled pipe sizing sleeve is formed by a polygonal block and multiple corner blocks located at the corners of the polygonal block facing the positioning rod. During disassembly and assembly, the operator can first remove multiple corner blocks radially along the positioning rod, and then remove the polygonal block axially along the positioning rod. This makes it easy to disassemble without considering whether there is an angle between the polygonal block and the positioning rod, and also eliminates the need to use external force to knock the sizing block out, reducing the risk of damage to the sizing block. This enables quick disassembly and assembly of the sizing plate of the pipe sizing sleeve.

[0008] In the aforementioned assembled pipe sizing sleeve, the corner block has two insertion parts located on the two sides of the second notch. The polygonal block has multiple insertion slots on its corners facing the positioning rod, each slot engaging with the insertion part. The polygonal block also has several positioning elements axially arranged along the base, each passing through both the polygonal block and the insertion part within the insertion slot, locking both in place. The interlocking of the corner block and the polygonal block, along with the fixing of the positioning elements, achieves structural stability and facilitates easy assembly and disassembly. Alternatively, besides the above structure, the polygonal block and corner block can also be fixed using rectangular washers and bolts. Specifically, a rectangular washer is placed at the joint of the polygonal block and the corner block, and bolts are installed at both ends of the rectangular washer, one on the polygonal block and the other on the corner block. Multiple such installations are repeated at the joint of the polygonal block and the corner block.

[0009] In the aforementioned assembled pipe sizing sleeve, the positioning element includes an L-shaped positioning element body and a locking ring threaded onto the positioning element body. The positioning element body and the locking ring can respectively abut against the two end faces of the polygonal block. The bent portion of the L-shaped positioning element body not only forms a limiting abutment with the end faces of the polygonal block but also facilitates handling by the operator. The mating structure between the locking ring and the L-shaped positioning element body is easy to assemble and disassemble, and provides a good locking effect. In addition to the above structure, the positioning element can also be made of bolts.

[0010] In the aforementioned assembled pipe sizing sleeve, a locating ring is threaded to the end of the locating rod furthest from the base. Several locating sleeves of varying lengths are also fitted onto the locating rod. The diameter of each locating sleeve is larger than the diameter of the connecting hole. The locating sleeves are located between the base and the sizing block, between two adjacent sizing blocks, or between the sizing block and the locating ring. The locating sleeves further limit the sizing block along the axial direction of the locating rod, preventing axial displacement of the sizing block during use and improving the reliability of this assembled pipe sizing sleeve.

[0011] In the aforementioned assembled pipe sizing sleeve, the base is cylindrical, the sizing block is triangular, the positioning rods are three in number and are round, the socket is circular, and the outer wall of the corner block has an arc-shaped chamfer. The cylindrical base and the arc-shaped chamfer on the outer wall of the corner block both avoid sharp edges and improve the safety of the assembly and disassembly process. The round positioning rods and the circular socket both reduce sharp edges and lower the difficulty of assembling and disassembling the sizing block. The three positioning rods and the triangular shape of the sizing block utilize the good stability of the triangular structure to improve the reliability of this assembled pipe sizing sleeve.

[0012] Compared with existing technologies, the advantages of this assembled pipe sizing sleeve are as follows: The sizing block of this assembled pipe sizing sleeve is formed by a polygonal block and multiple corner blocks located at the corners of the polygonal block facing the positioning rod. During disassembly and assembly, the operator can first remove multiple corner blocks radially along the positioning rod, and then remove the polygonal block axially along the positioning rod. This makes it easy to disassemble without considering whether there is an angle between the polygonal block and the positioning rod, and also eliminates the need to use external force to knock the sizing block out, reducing the risk of damage to the sizing block. This enables quick disassembly and assembly of the sizing plate of the pipe sizing sleeve. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the assembled pipe sizing sleeve.

[0014] Figure 2 This is a cross-sectional view of the assembled pipe sizing sleeve.

[0015] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0016] Figure 4 This is a three-dimensional structural diagram of the sizing sleeve and sizing block of this assembled pipe.

[0017] Figure 5 This is an exploded view of the sizing sleeve and sizing block of this assembled pipe.

[0018] In the figure, 1 is the base; 2 is the positioning rod; 3 is the sizing block; 3a is the polygonal block; 3a1 is the sizing hole; 3a2 is the first notch; 3a3 is the insertion groove; 3b is the corner block; 3b1 is the second notch; 3b2 is the insertion part; 4 is the positioning ring; 5 is the positioning sleeve; 6 is the sleeve hole; 7 is the positioning component; 7a is the positioning component body; 7b is the locking ring. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] An assembled pipe sizing sleeve, as shown in the reference Figure 1-5 The device includes a base 1, several positioning rods 2 arranged parallel to the axial direction of the base 1, and several sizing blocks 3 that are simultaneously sleeved on the positioning rods 2. Each sizing block 3 includes a polygonal block 3a and several corner blocks 3b. Each corner of the polygonal block 3a has a recessed first notch 3a2, and each corner block 3b has a recessed second notch 3b1. Each corner block 3b is detachably connected to each corner of the polygonal block 3a, and the first notch 3a2 and the second notch 3b1 together form a sleeve hole 6 for the positioning rods 2 to pass through.

[0021] Specifically, the corner block 3b has two insertion parts 3b2, which are located on the two sides of the second notch 3b1. The polygonal block 3a has multiple insertion slots 3a3 at the corners facing the positioning rod 2, which are engaged with the insertion parts 3b2. The polygonal block 3a is also provided with several positioning members 7 arranged along the axial direction of the base 1. Each positioning member 7 passes through the polygonal block 3a and the insertion part 3b2 located in the insertion slot 3a3 and locks both.

[0022] More specifically, the positioning element 7 includes an L-shaped positioning element body 7a and a locking ring 7b threadedly connected to the positioning element body 7a, and the positioning element body 7a and the locking ring 7b can respectively abut against the two end faces of the polygonal block 3a; the end of the positioning rod 2 away from the base 1 is threadedly connected to the positioning ring 4, and the positioning rod 2 is also fitted with a plurality of positioning sleeves 5 of different lengths, the diameter of the positioning sleeves 5 being larger than the diameter of the sleeve hole 6, and the positioning sleeves 5 being located between the base 1 and the sizing block 3, between two adjacent sizing blocks 3, or between the sizing block 3 and the positioning ring 4.

[0023] In this embodiment, the base 1 is preferably cylindrical, the sizing block 3 is triangular, the positioning rod 2 has three rods and is round, the sleeve hole 6 is circular, and the outer wall of the corner block 3b has an arc-shaped chamfer.

[0024] The working principle of this assembled pipe sizing sleeve is explained below:

[0025] During disassembly and assembly, the operator only needs to rotate the positioning ring 4 to remove it from the positioning rod 2, and then remove the several positioning parts 7 on the sizing block 3 one by one. Specifically, the operator rotates the locking ring 7b one by one to remove it from the corresponding positioning part body 7a, and then pulls the positioning part body 7a out of the sizing block 3 one by one. Then, the operator removes the corner blocks 3b that make up the sizing block 3 one by one. Then, the operator moves the polygonal block 3a that makes up the sizing block 3 along the axial direction of the positioning rod 2 and removes it. Because the socket hole 6 is formed by the second notch 3b1 and the first notch 3a2, the socket hole 6 no longer exists after the corner blocks 3b are removed. That is, there will be no resistance between the corner of the polygonal block 3a and the positioning rod 2. This makes it easy to disassemble the polygonal block 3a without considering whether there is an angle between it and the positioning rod 2. There is no need to use external force to knock the sizing block 3 out, reducing the risk of damage to the sizing block 3.

[0026] Repeat this process until all sizing blocks 3 are removed, thus completing the disassembly and assembly of this assembled pipe sizing sleeve. Similarly, the process is reversed when assembling this assembled pipe sizing sleeve.

[0027] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An assembled pipe sizing sleeve, comprising a base (1), a plurality of positioning rods (2) arranged parallel to the axial direction of the base (1), and a plurality of sizing blocks (3) respectively sleeved on the plurality of positioning rods (2), characterized in that, Each of the sizing blocks (3) includes a polygonal block (3a) and several corner blocks (3b). Each corner of the polygonal block (3a) has a recessed first notch (3a2), and each corner block (3b) has a recessed second notch (3b1). Each corner block (3b) is detachably connected to each corner of the polygonal block (3a), and the first notch (3a2) and the second notch (3b1) together form a socket hole (6) for the positioning rod (2) to pass through.

2. The assembled pipe sizing sleeve according to claim 1, characterized in that, The corner block (3b) has two insertion parts (3b2), which are located on the two sides of the second notch (3b1). The corner of the polygonal block (3a) facing the positioning rod (2) has multiple insertion slots (3a3) that are engaged with the insertion parts (3b2). The polygonal block (3a) is also provided with several positioning members (7) arranged along the axial direction of the base (1). Each positioning member (7) passes through the polygonal block (3a) and the insertion part (3b2) located in the insertion slot (3a3) and locks both.

3. The assembled pipe sizing sleeve according to claim 2, characterized in that, The positioning element (7) includes an L-shaped positioning element body (7a) and a locking ring (7b) threaded onto the positioning element body (7a), and the positioning element body (7a) and the locking ring (7b) can respectively abut against the two end faces of the polygonal block (3a).

4. An assembled pipe sizing sleeve according to claim 1, 2, or 3, characterized in that, The end of the positioning rod (2) away from the base (1) is threaded with a positioning ring (4). The positioning rod (2) is also fitted with a number of positioning sleeves (5) of different lengths. The diameter of the positioning sleeve (5) is larger than the diameter of the sleeve hole (6). The positioning sleeves (5) are located between the base (1) and the sizing block (3), between two adjacent sizing blocks (3), or between the sizing block (3) and the positioning ring (4).

5. The assembled pipe sizing sleeve according to claim 4, characterized in that, The base (1) is cylindrical, the sizing block (3) is triangular, the positioning rod (2) has three rods and is round, the socket (6) is circular, and the outer wall of the corner block (3b) has an arc-shaped chamfer.

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