Sizing device convenient to clean

Abstract

The utility model relates to the technical field of pipe sizing, in particular to a sizing device convenient to clean, which comprises a first sizing sleeve and a second sizing sleeve connected with the first sizing sleeve, a cooling sizing component is detachably sleeved on the first sizing sleeve, a cooling water path and a vacuum air path are arranged in the cooling sizing component, and the second sizing sleeve is sleeved on the second sizing sleeve. The first sizing sleeve is provided with a plurality of first air grooves, and the vacuum air channel is communicated with the interior of the first sizing sleeve through the first air grooves. The device is convenient to clean, can reduce the vacuum blockage phenomenon, further can improve the qualification rate of the outer diameter size of a product, and improves the production quality of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe sizing, and more particularly to a sizing device which is easy to clean. Background Art

[0002] During the production of plastic pipes, the pipes are typically sized using vacuum sizing sleeves, which are then cooled in water tanks to further maintain the sizing within the sleeves. Currently, most existing pipe forming sleeves utilize an integral blind hole structure for vacuum adsorption molding. During use, the blind holes are prone to clogging and difficult to clean due to the accumulation of product precipitates and scale. If the blind holes become clogged or are not properly cleaned, the vacuum-formed dimensions of the vacuum sizing sleeves will become unstable, resulting in significant fluctuations in the pipe's outer diameter and a reduced pass rate for the product's outer diameter. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a sizing device that is easy to clean, which is easy to clean, can reduce the occurrence of vacuum blockage, increase the qualified rate of product outer diameter dimensions, and improve product production quality.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A sizing device that is easy to clean is provided, comprising a first sizing sleeve and a second sizing sleeve connected to the first sizing sleeve, wherein a cooling sizing component is detachably sleeved on the first sizing sleeve, a cooling water path and a vacuum air path are provided in the cooling sizing component, a plurality of first air grooves are provided on the first sizing sleeve, and the vacuum air path is communicated with the interior of the first sizing sleeve through the first air grooves.

[0006] Preferably, the cooling water circuit includes a water storage chamber and a spraying water circuit, the first end of the spraying water circuit is connected to the water storage chamber, the second end of the spraying water circuit is connected to the outside world, and the second end of the spraying water circuit faces the second sizing sleeve; the water storage chamber is connected to the outside world.

[0007] Preferably, the inner diameter of the pipe inlet gradually increases from an end close to the second sizing sleeve to an end away from the second sizing sleeve.

[0008] Preferably, a first cooling groove is provided on the outer side wall of the first sizing sleeve. The first cooling groove is located near the pipe inlet of the first sizing sleeve, and the first cooling groove is communicated with the water storage chamber.

[0009] Preferably, the cooling and sizing component includes a cooling jacket and an outer cooling ring. The cooling jacket is sealingly sleeved with the first sizing jacket, and the outer cooling ring is sleeved with the cooling jacket. A covering ring is connected to the end of the outer cooling ring away from the second sizing jacket, and the covering ring is in contact with the outer wall of the pipe inlet of the first sizing jacket; the spray water channel is arranged in the cooling jacket, and a second cooling groove is provided on the inner wall of the outer cooling ring near one end of the covering ring; the second cooling groove, the inner side surface of the covering ring, the first end face of the cooling jacket, and the outer wall of the first sizing jacket are enclosed to form the water storage chamber.

[0010] Preferably, a plurality of first air grooves are arranged along the extension direction of the first sizing sleeve, and adjacent first air grooves are staggered on the first sizing sleeve.

[0011] Preferably, the vacuum air path includes an air chamber and an air duct, the first air groove is connected to the air chamber through the air duct, and the air chamber is connected to the outside.

[0012] Preferably, the cooling and sizing component includes a cooling jacket and an outer cooling ring, the cooling jacket is sealingly connected to the first sizing jacket, and the outer cooling ring is connected to the cooling jacket; the air duct is arranged on the cooling jacket; the outer wall of the cooling jacket is provided with a first recessed portion, and the inner wall of the outer cooling ring is provided with a second recessed portion at a position corresponding to the first recessed portion, and the first recessed portion and the second recessed portion are enclosed to form the air chamber.

[0013] Preferably, a fixed flange is detachably connected to one end of the cooling and sizing component close to the second sizing sleeve, wherein the cooling and sizing component is provided with a first rotation alignment part, and the fixed flange is provided with a second rotation alignment part, and the first rotation alignment part is aligned with the second rotation alignment part.

[0014] Preferably, the cooling and sizing component is connected with a cooling water nozzle for connecting to a water source and a vacuum air nozzle for connecting to a vacuum adsorption device. The cooling water nozzle is connected to the cooling water circuit, and the vacuum air nozzle is connected to the vacuum air circuit.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model discloses a sizing device which is easy to clean. When a pipe enters a first sizing sleeve and a second sizing sleeve, the arrangement of a vacuum air path can be used to shape the outer diameter of the pipe. The arrangement of a first air groove and a cooling water path can be used to cool and shape the pipe, and can prevent the pipe in a semi-molten state from being sucked into the vacuum air path. The arrangement of the first air groove being connected to the outer wall of the first sizing sleeve makes the air path structure on the first sizing sleeve a passage arrangement, and the arrangement of the first sizing sleeve and the cooling and sizing component being detachable can avoid the phenomenon of the first sizing sleeve not being properly cleaned, avoid the accumulation of impurities in the first air groove, improve the qualified rate of the product outer diameter size, and meet the production requirements of high-performance products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a sizing device that is easy to clean in the utility model;

[0018] Figure 2 This is a schematic structural diagram of the first sizing sleeve of the utility model;

[0019] Figure 3 for Figure 2 Cross-sectional view of AA;

[0020] Figure 4 This is a schematic diagram of the structure of the external cooling ring of the utility model;

[0021] Figure 5 for Figure 4 Cross-sectional view of the middle BB;

[0022] Figure 6 This is a schematic diagram of the structure of the fixed flange of the utility model;

[0023] Figure 7 for Figure 6 Cross-sectional view of CC.

[0024] The icon markings are explained as follows:

[0025] 1-first sizing sleeve, 11-first air groove, 12-first cooling groove, 13-pipe inlet, 14-step position, 15-internal thread, 2-second sizing sleeve, 21-second air groove, 3-cooling and sizing assembly, 31-cooling sleeve, 311-spray water channel, 312-air channel, 32-external cooling ring, 321-second cooling groove, 322-first rotation alignment part, 33-covering ring, 4-water storage chamber, 5-air chamber, 6-fixed flange, 61-second rotation alignment part, 7-cooling water nozzle, 8-vacuum air nozzle, 9-sealing ring. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] Example 1

[0029] like Figure 1 and Figure 2 The figure shows a first embodiment of a sizing device that is easy to clean according to the present invention, comprising a first sizing sleeve 1 and a second sizing sleeve 2 connected to the first sizing sleeve 1. A cooling sizing component 3 is detachably connected to the first sizing sleeve 1. A cooling water path and a vacuum air path are provided in the cooling sizing component 3. A plurality of first air grooves 11 are provided on the first sizing sleeve 1. The vacuum air path is communicated with the interior of the first sizing sleeve 1 through the first air grooves 11.

[0030] The pipe enters the first sizing sleeve 1 and the second sizing sleeve 2 in sequence. The setting of the vacuum air path can be used to shape the outer diameter of the pipe; the setting of the first air groove 11 and the cooling water path can be used to cool and shape the pipe, which can prevent the semi-molten pipe from being sucked into the vacuum air path; the setting of the first air groove 11 being connected to the outer wall of the first sizing sleeve 1 makes the air path structure on the first sizing sleeve 1 a passage setting, and the setting of the first sizing sleeve 1 and the cooling and sizing component 3 being detachable can avoid the phenomenon of the first sizing sleeve 1 not being cleaned in place, avoid the accumulation of impurities in the first air groove 11, and improve the product outer diameter size qualification rate. When the first air groove 11 is blocked by impurities such as precipitates and scale on the surface of the pipe, various precipitates and impurities can be quickly cleaned at the first air groove 11 by simple tools such as scrapers, which can achieve the purpose of rapid disassembly and cleaning, improve the stability of the outer diameter of the pipe during the production process, and at the same time, increase the service life of the sizing device, reduce the cost of use, and meet the production requirements of high-performance products.

[0031] like Figure 1 and Figure 2 As shown, the end of the first sizing sleeve 1 away from the second sizing sleeve 2 is the pipe entrance 13. The inner diameter of the pipe entrance 13 gradually increases from the end close to the second sizing sleeve 2 to the end away from the second sizing sleeve 2. This arrangement can facilitate the entry of the pipe into the first sizing sleeve 1. The cooling and sizing assembly 3 includes a cooling jacket 31 and an outer cooling ring 32. The cooling jacket 31 is sealed with the first sizing sleeve 1, and the outer cooling ring 32 is sleeved with the cooling jacket 31. The end of the outer cooling ring 32 away from the second sizing sleeve 2 is provided with a covering ring 33. The outer ring of the covering ring 33 is fixedly connected to the outer cooling ring 32, and the inner ring of the covering ring 33 abuts against the outer wall of the pipe entrance 13.

[0032] In this embodiment, a step position 14 is provided on the outer wall of the first sizing sleeve 1, and the first end of the cooling sleeve 31 abuts against the step position 14. The provision of the step position 14 can facilitate the positioning and installation of the cooling sleeve 31 on the first sizing sleeve 1. In this embodiment, the covering ring 33 and the outer cooling ring 32 can be integrally formed. In addition, a plurality of sealing rings 9 are provided between the cooling sleeve 31 and the first sizing sleeve 1. The provision of the sealing rings 9 can improve the sealing performance between the cooling sleeve 31 and the first sizing sleeve 1. It should be noted that sealing rings can also be provided on the outer cooling ring 32 and the cooling sleeve 31 to improve the sealing performance.

[0033] like Figure 1 As shown, the cooling water circuit includes a water storage chamber 4 and a spray water circuit 311. The first end of the spray water circuit 311 is connected to the water storage chamber 4, and the second end of the spray water circuit 311 is connected to the outside world, and the second end of the spray water circuit 311 faces the second sizing sleeve 2; the water storage chamber 4 is connected to the outside world. Among them, the outer wall of the first sizing sleeve 1 is provided with a first cooling groove 12, and the first cooling groove 12 is located near the pipe inlet 13 of the first sizing sleeve 1, and the first cooling groove 12 is connected to the water storage chamber 4. The setting of the first cooling groove 12 makes the wall thickness there thinner, which can be used to form a space for preliminary cooling circulation and can cool the pipe that has just entered the first sizing sleeve 1, so that the surface of the pipe forms a certain strength to prevent the surface of the pipe from being sucked into the vacuum air circuit. Specifically, the wall thickness t of the first sizing sleeve 1 at the bottom of the first cooling groove 12 is 2.0-2.5mm, as shown in FIG. Figure 2 As shown. A spray water path 311 is located within the cooling jacket 31. Multiple spray water paths 311 can be arranged in a spoke-like pattern within the cooling jacket 31. A second cooling groove 321 is provided on the inner sidewall of the outer cooling ring 32, near one end of the cover ring 33. The second cooling groove 321, the inner sidewall of the cover ring 33, the first end surface of the cooling jacket 31, and the outer sidewall of the first sizing sleeve 1 together form a water storage chamber 4. In this embodiment, the water storage chamber 4 can be an annular water storage chamber.

[0034] Furthermore, the outer cooling ring 32 is connected to a plurality of cooling water nozzles 7 for connecting to a water source, and the cooling water nozzles 7 are in communication with the water storage chamber 4. Water can enter the cooling and sizing assembly 3 from the cooling water nozzles 7, and then enter the water storage chamber 4. The cooling water can cool the pipe just entering the first sizing sleeve 1 in the first cooling trough 12, and then continue to cool it through the spray water channel 311. It is then sprayed from the spray water channel 311 to the second sizing sleeve 2 to continue to cool the pipe inside.

[0035] like Figure 1 As shown, the vacuum air circuit includes an air chamber 5 and an air duct 312. The first air groove 11 is connected to the air chamber 5 through the air duct 312, and the air chamber 5 is connected to the outside. In this embodiment, the air duct 312 is provided on the cooling jacket 31; the outer wall of the cooling jacket 31 is provided with a first recessed portion, and the air duct 312 is connected to the first recessed portion; a second recessed portion is provided on the inner wall of the outer cooling ring 32 at a position corresponding to the first recessed portion, and the first recessed portion and the second recessed portion enclose the air chamber 5. In this embodiment, the air chamber 5 can be an annular air chamber. In addition, a vacuum air nozzle 8 for connecting to a vacuum adsorption device is connected to the outer cooling ring 32, and the vacuum air nozzle 8 is connected to the air chamber 5. The vacuum adsorption device can perform vacuum adsorption through the vacuum air nozzle 8, the air chamber 5, the air duct 312, and the first air groove 11 in sequence, and can shape the outer diameter of the pipe.

[0036] like Figure 1 and Figure 2 As shown, in this embodiment, the inner diameters of the first and second sizing sleeves 1 and 2 are equal. The first and second sizing sleeves 1 and 2 are detachably connected, which facilitates maintenance and cleaning of the sizing sleeves. The first sizing sleeve 1 is provided with an internal thread 15, and one end of the second sizing sleeve 2 is provided with an external thread, and the first and second sizing sleeves 1 and 2 are connected by threads. In this embodiment, the first sizing sleeve 1 can be made of a metal sizing sleeve with a thermal conductivity greater than 400 W / (m·K), which can efficiently and quickly remove heat from the surface of the semi-molten pipe, improving cooling efficiency.

[0037] Example 2

[0038] This embodiment is similar to embodiment 1, except that Figures 1 to 3 As shown, in this embodiment, multiple first air grooves 11 are arranged along the extension direction of the first sizing sleeve 1, and adjacent first air grooves 11 are staggered on the first sizing sleeve 1. The cross-section of the first air grooves 11 is a fan-shaped structure, and adjacent first air grooves 11 are staggered at 90 degrees. In this embodiment, the first air grooves 11 are evenly distributed on the first sizing sleeve 1.

[0039] like Figure 1As shown, the second sizing sleeve 2 is provided with a plurality of second air grooves 21 along its extension direction, and adjacent second air grooves 21 may also be staggered. In this embodiment, the second air grooves 21 may be evenly or unevenly distributed on the second sizing sleeve 2. Preferably, the spacing between the second air grooves 21 near one end of the first sizing sleeve 1 is smaller than the spacing between the second air grooves 21 away from the end of the first sizing sleeve 1.

[0040] Example 3

[0041] This embodiment is similar to embodiment 1 or 2, except that Figure 1 、 Figures 4 to 7 As shown, in this embodiment, a fixing flange 6 is detachably connected to one end of the cooling and sizing component 3 near the second sizing sleeve 2, wherein a first rotation alignment portion 322 is provided on one end of the outer cooling ring 32 near the second sizing sleeve 2, and the fixing flange 6 is provided with a second rotation alignment portion 61 corresponding to the position of the first rotation alignment portion 322, and the first rotation alignment portion 322 is aligned with the second rotation alignment portion 61. The setting of the fixing flange 6 enables the cooling sleeve 31 to be stably connected between the outer cooling ring 32 and the first sizing sleeve 1; the setting of the fixing flange 6 enables it to be used for connection with a water tank so that the second sizing sleeve 2 is located in the water tank. As shown Figure 1 As shown, the second sizing sleeve 2 can pass through the through hole in the middle of the fixed flange 6 , and the second end of the spray water channel 311 can also be communicated with the outside through the through hole in the middle of the fixed flange 6 .

[0042] Specifically, if Figure 4 and Figure 5 As shown, the first rotation alignment portion 322 is a rotation alignment convex portion, and an inclined groove is provided on the rotation alignment convex portion. Figure 6 and Figure 7 As shown, the second rotational alignment portion 61 is a rotational alignment notch, and the rotational alignment notch has an inclined surface that matches the bevel groove, so that the fixed flange 6 and the outer cold ring 32 can be quickly connected by rotating and tightening, thereby improving the efficiency of disassembly and assembly of the sizing device. In this embodiment, multiple second rotational alignment portions 61 are provided, and the multiple second rotational alignment portions 61 are arranged in a spoke-like manner on the fixed flange 6. Specifically, four second rotational alignment portions 61 can be provided, and accordingly, four first rotational alignment portions 322 are also provided.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A sizing device that is easy to clean, characterized in that: The invention comprises a first sizing sleeve (1) and a second sizing sleeve (2) connected to the first sizing sleeve (1); a cooling sizing component (3) is detachably sleeved on the first sizing sleeve (1); a cooling water path and a vacuum air path are provided in the cooling sizing component (3); a plurality of first air grooves (11) are provided on the first sizing sleeve (1); and the vacuum air path is communicated with the interior of the first sizing sleeve (1) through the first air grooves (11).

2. The sizing device that is easy to clean according to claim 1, characterized in that: The cooling water circuit comprises a water storage chamber (4) and a spray water circuit (311); a first end of the spray water circuit (311) is connected to the water storage chamber (4), a second end of the spray water circuit (311) is connected to the outside, and the second end of the spray water circuit (311) faces the second sizing sleeve (2); and the water storage chamber (4) is connected to the outside.

3. The sizing device that is easy to clean according to claim 2, characterized in that: The inner diameter of the pipe inlet portion (13) of the first sizing sleeve (1) gradually increases from an end close to the second sizing sleeve (2) to an end away from the second sizing sleeve (2).

4. The sizing device that is easy to clean according to claim 2, characterized in that: The outer wall of the first sizing sleeve (1) is provided with a first cooling groove (12), the first cooling groove (12) is located near the pipe inlet (13) of the first sizing sleeve (1), and the first cooling groove (12) is connected to the water storage chamber (4).

5. The sizing device that is easy to clean according to any one of claims 2 to 4, characterized in that: The cooling and sizing component (3) includes a cooling jacket (31) and an outer cooling ring (32), wherein the cooling jacket (31) is sealingly sleeved with the first sizing jacket (1), and the outer cooling ring (32) is sleeved with the cooling jacket (31), and a covering ring (33) is connected to the end of the outer cooling ring (32) away from the second sizing jacket (2), and the covering ring (33) is in contact with the outer wall of the pipe inlet (13) of the first sizing jacket (1); the spray water path (311) is arranged in the cooling jacket (31), and a second cooling groove (321) is provided on the inner wall of the outer cooling ring (32) near one end of the covering ring (33); the second cooling groove (321), the inner side surface of the covering ring (33), the first end surface of the cooling jacket (31), and the outer wall of the first sizing jacket (1) are enclosed to form the water storage chamber (4).

6. The sizing device that is easy to clean according to claim 1, characterized in that: A plurality of first air grooves (11) are arranged along the extension direction of the first sizing sleeve (1), and adjacent first air grooves (11) are staggered on the first sizing sleeve (1).

7. The sizing device that is easy to clean according to claim 1, characterized in that: The vacuum air circuit comprises an air chamber (5) and an air duct (312); the first air groove (11) is connected to the air chamber (5) through the air duct (312), and the air chamber (5) is in communication with the outside world.

8. The sizing device that is easy to clean according to claim 7, characterized in that: The cooling and sizing component (3) includes a cooling jacket (31) and an outer cooling ring (32), wherein the cooling jacket (31) is sealingly sleeved with the first sizing jacket (1), and the outer cooling ring (32) is sleeved with the cooling jacket (31); the air duct (312) is provided on the cooling jacket (31); the outer wall of the cooling jacket (31) is provided with a first recessed portion, and the inner wall of the outer cooling ring (32) is provided with a second recessed portion at a position corresponding to the first recessed portion, and the first recessed portion and the second recessed portion are enclosed to form the air chamber (5).

9. The sizing device easy to clean according to any one of claims 1 to 4 and 6 to 8, characterized in that: A fixed flange (6) is detachably connected to one end of the cooling and sizing component (3) near the second sizing sleeve (2), wherein the cooling and sizing component (3) is provided with a first rotation alignment portion (322), and the fixed flange (6) is provided with a second rotation alignment portion (61), and the first rotation alignment portion (322) is aligned with the second rotation alignment portion (61).

10. The sizing device easy to clean according to any one of claims 1 to 4 and 6 to 8, characterized in that: The cooling and sizing component (3) is connected to a cooling water nozzle (7) for connecting to a water source and a vacuum air nozzle (8) for connecting to a vacuum adsorption device. The cooling water nozzle (7) is connected to a cooling water circuit, and the vacuum air nozzle (8) is connected to a vacuum air circuit.

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