Cooling vacuum sizing device
By designing a detachable cooling vacuum sizing device, the combined structure of the spiral section and the vacuum section is used to solve the problems of pipe deformation and surface unsmooth in the large-pipe thick-walled pipe production line, and the production adapted to different wall thicknesses is achieved, reducing the Production costs and increase equipment utilization.
Patent Information
- Application Number
- CN202323342218.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-08
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-08
AI Technical Summary
The existing large pipe thick-walled pipe production line deformed due to the thick-walled self-weight during low-speed propulsion, and the sizing sleeve cannot be fit regularly, resulting in unsmooth surface. The sizing sleeve needs to be replaced when the production plan changes, resulting in idle equipment and increasing production. cost.
Design a cooling vacuum sizing device including a cylindrical structure. Through the combination of the first and second sizing sleeves, the pre-cooling of the pipe and the surface flattening of the pipe is achieved by using the spiral grooves and vacuum holes of the spiral section and the vacuum section to achieve different pre-cooling and surface flattening, and adapting to different The second sizing sleeve is removably connected to extend the sizing sleeve to avoid idle equipment.
The outer diameter of the pipe reaches the specified dimensional tolerance range and obtains good surface quality, prevents deformation, and improves production efficiency through rapid disassembly and thermally conductive materials to avoid idle equipment.
Smart Images
Figure CN222271232U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipe processing and manufacturing equipment, in particular to a cooling vacuum sizing device. Background Art
[0002] For a large tube thick-walled pipe production line, after the thick-walled pipe is extruded from the die, due to the heavy deadweight of the thick tube wall, deformation will occur during the low-speed advancement and transmission process. Therefore, cooling and shaping measures must be taken to ensure the size and shape accuracy of the pipe and good surface quality. The function of the sizing sleeve is to ensure that after the pipe is cooled, its outer diameter reaches the specified dimensional tolerance range and obtains good surface quality. However, the sizing sleeve in the prior art, for the large tube thick-walled production line, the sizing sleeve will pre-cool the outer surface of the pipe first. Since the thick-walled pipe is advanced and transmitted at a very slow speed, the outer surface of the pipe product and the sizing sleeve cannot be regularly fitted, and an uneven surface will be formed on the surface of the pipe product. In addition, when the production plan changes, it is necessary to produce thin-walled pipes. At this time, the large tube thick-walled pipe production line needs to replace a longer sizing sleeve to meet the thin-walled pipe manufacturing and processing technology. The shorter sizing sleeve for processing large tube thick-walled pipes will be idle, which invisibly increases the production cost of the enterprise. Utility Model Content
[0003] The utility model aims to provide a cooling vacuum sizing device which can process different pipe wall thicknesses by changing the length.
[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a cooling vacuum sizing device, comprising: a sizing structure of a cylindrical structure, a plurality of vacuum holes are opened on the outer surface of the sizing structure, the sizing structure comprises a first sizing sleeve and at least one second sizing sleeve which are interconnected, the second sizing sleeve is connected to the downstream of the first sizing sleeve in a detachable manner, the first sizing sleeve comprises a spiral section and a first vacuum section, the second sizing sleeve comprises a second vacuum section, the spiral section is arranged upstream of the first vacuum section, a spiral groove extending in an axial spiral is opened on the inner surface of the spiral section, and the plurality of vacuum holes are evenly distributed circumferentially and axially in the first vacuum section and the second vacuum section, respectively.
[0005] By adopting the above technical solution, only the first sizing sleeve is retained when thick-walled pipes are produced and processed, and at least one second sizing sleeve is installed when thin-walled pipes are produced and processed. The pipe first enters the spiral groove of the spiral section, is precooled in the spiral groove, and the outer surface of the pipe wall is flattened to prevent deformation, then enters the first vacuum section and is processed into a pipe body with a thicker pipe wall under the adsorption of the vacuum hole, and finally enters the second vacuum section and is processed into a pipe body with a thinner pipe wall under the adsorption of the vacuum hole.
[0006] The beneficial effects of the utility model are as follows: by extending the first sizing sleeve, the detachable second sizing sleeve can be added downstream of the first sizing sleeve for manufacturing and processing thick-walled tubes, so as to form a longer sizing sleeve for manufacturing and processing thin-walled tubes, thereby avoiding equipment idleness; in addition, in order to ensure that the outer diameter reaches the specified dimensional tolerance range and obtain good surface quality, a spiral groove is added to prevent deformation of the tube wall.
[0007] In some embodiments, a plurality of vacuum grooves are opened around the circumference of the inner surface of the first vacuum segment, the plurality of vacuum grooves are arranged at equal intervals along the axial direction, and a plurality of vacuum holes are opened at equal intervals at the bottom of each vacuum groove.
[0008] By adopting the above technical solution, the vacuum groove helps the outer diameter of the tube body to reach the specified dimensional tolerance range and obtain good surface quality.
[0009] In some embodiments, a plurality of vacuum grooves are opened around the circumference of the inner surface of the second vacuum segment, the plurality of vacuum grooves are arranged at equal intervals along the axial direction, and a plurality of vacuum holes are opened at equal intervals at the bottom of each vacuum groove.
[0010] By adopting the above technical solution, the vacuum groove helps the outer diameter of the tube body to reach the specified dimensional tolerance range and obtain good surface quality.
[0011] In some embodiments, the second sizing sleeve further includes a flattening section, which is disposed upstream of the second vacuum section. A plurality of flattening grooves are provided around the circumference of the inner surface of the flattening section, and the plurality of flattening grooves are spaced apart in the axial direction.
[0012] By adopting the above technical solution, the inner diameters of the first sizing sleeve and the second sizing sleeve are not necessarily exactly the same, which results in the outer surface of the tube body being rough and unable to completely fit with the inner surface of the sizing structure. After passing through the connection between the two, the outer surface of the tube body needs to be trimmed again through the smoothing groove of the smoothing section so that it completely fits with the inner surface of the sizing structure.
[0013] In some embodiments, the outer surface sleeves of the first sizing sleeve and the second sizing sleeve are respectively provided with a connecting flange, and the two connecting flanges are fixedly connected by a plurality of screw rods.
[0014] By adopting the above technical solution, the first sizing sleeve and the second sizing sleeve can be quickly assembled and disassembled through the connecting flange and the screw rod.
[0015] In some embodiments, the first sizing sleeve and the second sizing sleeve are both copper sizing sleeves.
[0016] By adopting the above technical solution, the copper sizing sleeve has good thermal conductivity and can better prevent the pipe body from deforming. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a cross-sectional view of an embodiment.
[0018] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.
[0019] Figure 3 It is a cross-sectional view of the first sizing sleeve.
[0020] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.
[0021] Figure 5 It is a cross-sectional view of the second sizing sleeve.
[0022] Figure 6 yes Figure 5 A partial enlarged view of point C in the middle.
[0023] The accompanying drawings are as follows:
[0024] 1. Sizing structure; 2. Vacuum hole; 3. Vacuum groove; 4. Connecting flange; 5. Screw rod; 6. Pull rod; 7. Base;
[0025] 11. First sizing sleeve; 111. Spiral section; 112. Spiral groove; 113. First vacuum section;
[0026] 12. Second sizing sleeve; 121. Smoothing section; 122. Smoothing groove; 123. Second vacuum section. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0028] The directions “upstream” and “downstream” in the specification are respectively Figure 1 The left and right directions correspond to each other. The directions such as "front, back, left, right, up, down" mentioned in the text are not absolutely limited and can be adjusted according to the actual placement.
[0029] The following is combined with Figures 1 to 6 The embodiments described below describe the present invention in detail.
[0030] In the embodiment, the cooling vacuum sizing device includes a copper first sizing sleeve 11 and a copper second sizing sleeve 12. The copper sizing sleeve has good thermal conductivity and can better prevent the tube from deforming. Other specific structures are:
[0031] The first sizing sleeve 11 is arranged upstream of the second sizing sleeve 12. The outer surface sleeves of the first sizing sleeve 11 and the second sizing sleeve 12 are respectively provided with a connecting flange 4, and then the two connecting flanges 4 are fixedly connected by four screw rods 5. The first sizing sleeve 11 and the second sizing sleeve 12 can be quickly disassembled and assembled through the connecting flange 4 and the screw rod 5, thereby improving production efficiency.
[0032] A base 7 is provided on the outer surface of the first sizing sleeve 11, and the base 7 is used to be fixedly connected to an external device. The connecting flange 4 of the first sizing sleeve 11 and the base 7 are fixedly connected via a tie rod 6, thereby reinforcing the cooling vacuum sizing device.
[0033] The first sizing sleeve 11 includes a spiral section 111 and a first vacuum section 113. The spiral section 111 is arranged upstream of the first vacuum section 113. The inner surface of the spiral section 111 is provided with a spiral groove 112 extending in an axial spiral direction. Seven vacuum grooves 3 are circumferentially provided around the inner surface of the first vacuum section 113. The seven vacuum grooves 3 are equally spaced in the axial direction, and a plurality of vacuum holes 2 are equally spaced at the bottom of each vacuum groove 3.
[0034] The second sizing sleeve 12 includes a flattening section 121 and a second vacuum section 123. The flattening section 121 is arranged upstream of the first vacuum section 113. Three flattening grooves 122 are opened around the circumference of the inner surface of the flattening section 121. The three flattening grooves 122 are arranged at intervals along the axial direction. Seven vacuum grooves 3 are opened around the circumference of the inner surface of the second vacuum section 123. The seven vacuum grooves 3 are arranged at equal intervals along the axial direction. A plurality of vacuum holes 2 are opened at equal intervals at the bottom of each vacuum groove 3.
[0035] It should be noted that there is no limit to the number of the second sizing sleeves 12, which can be designed to be 2, 3, etc. according to actual needs. It should also be noted that there is no limit to the number of the screw rods 5, which can be designed to be 2, 3, 8, etc. according to actual needs.
[0036] It should be noted that there is no limit to the number of vacuum grooves 3 in each sizing sleeve, and it can be designed to be 9, 13, etc. according to actual needs. In addition, it should be noted that there is no limit to the number of flat grooves 122 of each second sizing sleeve 12, and it can be designed to be 2, 5, 8, etc. according to actual needs.
[0037] The specific processing path of the pipe is as follows:
[0038] The pipe first enters the spiral groove 112 of the spiral section 111, is pre-cooled in the spiral groove 112, and the outer surface of the pipe wall is smoothed to prevent deformation, and then enters the first vacuum section 113 to be processed into a pipe body with a thicker wall under the adsorption of the vacuum hole 2 in the vacuum groove 3, and then enters the smoothing section 121, and the outer surface of the pipe body is trimmed again through the smoothing groove 122 of the smoothing section 121 so that it is completely in contact with the inner surface of the sizing structure 1, and finally enters the second vacuum section 123 to be processed into a pipe body with a thinner wall under the adsorption of the vacuum hole 2.
[0039] It should also be noted that in the present invention, only the first sizing sleeve 11 is retained when producing and processing thick-walled pipes, and at least one second sizing sleeve 12 is installed when producing and processing thin-walled pipes.
[0040] The utility model extends the first sizing sleeve 11, and can add a detachable second sizing sleeve 12 downstream of the first sizing sleeve 11 for manufacturing and processing thick-walled tubes, so as to form a longer sizing sleeve that can produce and process thin-walled tubes, thereby avoiding idle equipment. In addition, in order to achieve the specified dimensional tolerance range of the outer diameter and obtain good surface quality, a spiral groove 112 is added to prevent deformation of the tube wall.
[0041] The above description is only an implementation method of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present utility model, or directly or indirectly used in other related technical fields, should be included in the protection scope of the present utility model.
Claims
1. A cooling vacuum sizing device, characterized in that: include: A sizing structure (1) of a cylindrical structure, wherein a plurality of vacuum holes (2) are provided on the outer surface of the sizing structure (1), wherein the sizing structure (1) comprises a first sizing sleeve (11) and at least one second sizing sleeve (12) which are interconnected, wherein the second sizing sleeve (12) is detachably connected to the downstream of the first sizing sleeve (11), wherein the first sizing sleeve (11) comprises a spiral section (111) and a first vacuum section (113), wherein the second sizing sleeve (12) comprises a second vacuum section (123), wherein the spiral section (111) is arranged upstream of the first vacuum section (113), wherein the inner surface of the spiral section (111) comprises a spiral groove (112) extending in an axial spiral direction, and wherein the plurality of vacuum holes (2) are uniformly distributed in the circumferential direction and the axial direction in the first vacuum section (113) and the second vacuum section (123).
2. A cooling vacuum sizing device according to claim 1, characterized in that: A plurality of vacuum grooves (3) are provided in the circumferential direction of the inner surface of the first vacuum section (113), the plurality of vacuum grooves (3) are arranged at equal intervals along the axial direction, and a plurality of vacuum holes (2) are provided at equal intervals at the bottom of each vacuum groove (3).
3. A cooling vacuum sizing device according to claim 1, characterized in that: A plurality of vacuum grooves (3) are provided in the circumferential direction around the inner surface of the second vacuum section (123); the plurality of vacuum grooves (3) are arranged at equal intervals along the axial direction; and a plurality of vacuum holes (2) are provided at equal intervals at the bottom of each vacuum groove (3).
4. A cooling vacuum sizing device according to claim 1, characterized in that: The second sizing sleeve (12) further comprises a flattening section (121), the flattening section (121) being arranged upstream of the second vacuum section (123), a plurality of flattening grooves (122) being provided in a circumferential direction around the inner surface of the flattening section (121), the plurality of flattening grooves (122) being arranged at intervals along the axial direction.
5. The cooling vacuum sizing device according to claim 1, characterized in that: The outer surface sleeves of the first sizing sleeve (11) and the second sizing sleeve (12) are respectively provided with a connecting flange (4), and the two connecting flanges (4) are fixedly connected via a plurality of screw rods (5).
6. A cooling vacuum sizing device according to claim 1, characterized in that: The first sizing sleeve (11) and the second sizing sleeve (12) are both copper sizing sleeves.