Plastic pipe shaping device

Abstract

The utility model relates to a plastic pipe shaping device which comprises a mold, a heat exchange assembly and a driving assembly, the mold comprises a first sub-mold and a second sub-mold which can be assembled, the parting surface of the first sub-mold is provided with a main cavity extending in the preset direction, and the parting surface of the second sub-mold is provided with an auxiliary cavity matched with the main cavity; an embedding opening is formed in the position, on the parting surface of the first sub-mold, of the main mold cavity, the embedding opening is in a closed shape relative to the interior of the main mold cavity, so that a plastic pipe to be shaped can be embedded into and clamped into the main mold cavity through the embedding opening, and when the mold is in a mold closing state, the main mold cavity and the auxiliary mold cavity define a limiting channel; the heat exchange assembly comprises a heating unit used for providing heat for the main cavity and the auxiliary cavity. And the driving assembly is used for adjusting the distance between the parting surface of the first sub-mold and the parting surface of the second sub-mold. According to the embodiment of the invention, the plastic pipe can be accurately bent and shaped, and the product yield is relatively high.

Description

Technical Field

[0001] The present application relates to the technical field of pipe processing equipment, and in particular to a plastic pipe shaping device. Background Art

[0002] Plastic pipes have the advantages of low price and good durability, so they are widely used in the construction field; in addition, since some plastic pipes also have good antibacterial properties, they are also widely used in the medical device field.

[0003] For some medical devices, such as the plastic tubes used at the distal ends of some cardiac interventional devices, the degree of bending of the plastic tubes needs to be precisely controlled in order to protect the blood vessels and the heart from being scratched by the interventional devices.

[0004] Traditional plastic pipes are generally mass-produced by extrusion molding, which cannot meet the requirements for precise bending and shaping of plastic pipes. Utility Model Content

[0005] The embodiment of the present application provides a plastic pipe shaping device, which can accurately bend and shape the plastic pipe and has a high product yield.

[0006] The embodiment of the present application provides a plastic pipe shaping device, which includes: a mold, including a first sub-mold and a second sub-mold that can be molded together, the parting surface of the first sub-mold is provided with a main cavity extending along a preset direction, the parting surface of the second sub-mold is provided with an auxiliary cavity adapted to the main cavity, the main cavity has an embedding opening at the position of the parting surface of the first sub-mold, the embedding opening is in a retracted shape compared to the inside of the main cavity, so that the plastic pipe to be shaped can be embedded and clamped to the main cavity through the embedding opening, when the mold is in a mold-closing state, the main cavity and the auxiliary cavity are surrounded to form a limiting channel, and the shape and size of the limiting channel match the shape and size of the plastic pipe in a target shape; a heat exchange component, installed on at least one of the first sub-mold and the second sub-mold, the heat exchange component includes a heating unit, and the heating unit is used to provide heat to the main cavity and the auxiliary cavity; a driving component, connected to at least one of the first sub-mold and the second sub-mold, to adjust the distance between the parting surface of the first sub-mold and the parting surface of the second sub-mold.

[0007] In some embodiments, the cross-section of the limiting channel is circular.

[0008] In some embodiments, the ratio between the chord length corresponding to the cross section of the main cavity and the diameter corresponding to the cross section of the main cavity is 0.6 to 0.8.

[0009] In some embodiments, at least one end of the main cavity is located inside the first sub-mold; and / or, at least one end of the main cavity is located on the peripheral side of the first sub-mold; and / or, one of the parting surfaces of the first sub-mold and the second sub-mold is provided with a locating pin, and the other is provided with a locating groove matching the locating pin.

[0010] In some embodiments, a accommodating cavity is provided inside the first sub-mold, and a plug interface connected to the accommodating cavity is provided on the peripheral side of the first sub-mold. The heating unit includes: a heating resistor, which is plugged into the accommodating cavity through the plug interface; and a heating thermostat, which is electrically connected to the heating resistor.

[0011] In some embodiments, the heating unit further includes a temperature sensor electrically connected to the heating temperature controller, and the temperature sensor is embedded in the parting surface of the first sub-mold near the main cavity or in the parting surface of the second sub-mold near the auxiliary cavity.

[0012] In some embodiments, the heat exchange assembly further includes a cooling unit installed in at least one of the first sub-mold and the second sub-mold to absorb heat in the main cavity and the auxiliary cavity.

[0013] In some embodiments, the parting surface of the first sub-mold is provided with cooling grooves spaced apart from the main cavity, the cooling grooves are located on the peripheral side of the main cavity, and the ends of the cooling grooves are all located on the peripheral side of the first sub-mold, and the cooling unit includes: a liquid cooling pipe, which is detachably installed in the cooling groove; a liquid cooler, which is used to provide heat exchange medium to the liquid cooling pipe, and the liquid cooling pipe extends from the end of the cooling groove and is connected to the liquid cooler.

[0014] In some embodiments, the plastic pipe shaping device further comprises a workbench, and one or more supporting columns are arranged between the first sub-mold and the workbench, the supporting columns are fixedly connected to the workbench, and the first sub-mold is detachably mounted on the supporting columns.

[0015] In some embodiments, the driving assembly includes a telescopic part, which is located on the side of the second sub-mold facing away from the first sub-mold. One end of the telescopic part is fixed to the workbench through a frame, and the other end of the telescopic part is fixed to a adapter. The adapter can be removably installed on the second sub-mold, and the adapter is made of hard rubber.

[0016] The plastic pipe shaping device of the embodiment of the present application includes a mold, a heat exchange component and a drive component, wherein the mold includes a first sub-mold and a second sub-mold that can be molded together, the parting surface of the first sub-mold is provided with a main cavity extending along a preset direction, the parting surface of the second sub-mold is provided with an auxiliary cavity adapted to the main cavity, the main cavity has an embedding opening at the parting surface of the first sub-mold, and the embedding opening is retracted compared to the interior of the main cavity. When the mold is in a mold-closed state, the main cavity and the auxiliary cavity are combined to form a limiting channel; the heat exchange component includes a heating unit for providing heat to the main cavity and the auxiliary cavity; the drive component is used to adjust the distance between the parting surface of the first sub-mold and the parting surface of the second sub-mold. The device constrains the plastic pipe to be shaped to a target shape through a limiting channel, and then heats it through a heating unit to eliminate the internal stress of the plastic pipe. The plastic pipe can be accurately bent and shaped, and has a high product yield. Since the main cavity has an embedding opening at the parting surface of the first sub-mold, the plastic pipe to be shaped can be quickly embedded in the main cavity and the plastic pipe can be initially limited. The operation is convenient, and it can largely avoid the plastic pipe accidentally detaching from the main cavity during the mold closing process, resulting in the parting surface of the second sub-mold and the first sub-mold crushing the plastic pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic diagram of the structure of a plastic pipe shaping device provided in an embodiment of the present application;

[0019] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0020] In the figure: 1. telescopic part; 2. adapter; 3. second sub-mold; 4. liquid cooling pipe; 5. plastic pipe; 6. main cavity; 7. temperature sensor; 8. heating thermostat; 9. first sub-mold; 10. heating resistor; 11. cooling trough; 12. support column; 13. positioning pin; 14. liquid cooler. DETAILED DESCRIPTION

[0021] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0023] At present, for some medical devices, such as some plastic tubes used at the distal end of some cardiac interventional devices, in order to protect blood vessels and the heart from being scratched by the interventional devices, it is necessary to accurately control the bending degree of the plastic tubes. The inventors of this application have found that traditional plastic tubes are generally mass-produced by extrusion molding, which cannot meet the requirements for accurate bending and shaping of plastic tubes.

[0024] In order to solve the problems in the prior art, the present application provides a plastic pipe shaping device, which is described in detail below in conjunction with the accompanying drawings.

[0025] Figure 1 A schematic diagram of the structure of a plastic pipe shaping device provided in an embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0026] See also Figure 1 to Figure 2, an embodiment of the present application provides a plastic pipe shaping device, including a mold, a heat exchange component and a drive component. The mold includes a first sub-mold 9 and a second sub-mold 3 that can be molded together. The parting surface of the first sub-mold 9 is provided with a main cavity 6 extending along a preset direction, and the parting surface of the second sub-mold 3 is provided with an auxiliary cavity adapted to the main cavity 6. It should be noted that the preset direction refers to the extension direction of the plastic pipe in the target shape; the plastic pipe in the target shape refers to the plastic pipe that meets the design requirements after the plastic pipe to be shaped is completed. The main cavity 6 has an embedding opening at the parting surface of the first sub-mold 9, and the embedding opening is retracted compared to the inside of the main cavity 6, so that the plastic pipe to be shaped can be embedded and snapped into the main cavity 6 through the embedding opening. When the mold is in the closed state, the main cavity 6 and the auxiliary cavity are combined to form a limiting channel, and the shape and size of the limiting channel match the shape and size of the plastic pipe in the target shape, that is, the limiting channel can stably constrain the plastic pipe to be formed to the target shape; the heat exchange component is installed on at least one of the first sub-mold 9 and the second sub-mold 3, and the heat exchange component includes a heating unit, which is used to provide heat to the main cavity 6 and the auxiliary cavity; the driving component is connected to at least one of the first sub-mold 9 and the second sub-mold 3 to adjust the distance between the parting surface of the first sub-mold 9 and the parting surface of the second sub-mold 3. It should be noted that the parting surface of the first sub-mold 9 refers to the side wall of the first sub-mold 9 which abuts against the second sub-mold 3 in the closed mold state, and the parting surface of the second sub-mold 3 refers to the side wall of the second sub-mold 3 which abuts against the first sub-mold 9 in the closed mold state; in addition, technical personnel in this field can undoubtedly determine the shape and size of the auxiliary cavity at the parting surface of the second sub-mold 3, on the premise that they know the extension direction of the main cavity 6 and the shape and size of the limiting channel formed by the main cavity 6 and the auxiliary cavity match the shape and size of the plastic pipe in the target shape. Therefore, the auxiliary cavity is not shown in the drawings of the present application.

[0027] The working process of the device is as follows: the plastic tube to be shaped is embedded in the main cavity 6. Specifically, since the embedding port is in a contracted shape compared to the interior of the main cavity 6, the plastic tube will undergo a slight elastic deformation in the process of pressing the plastic tube into the main cavity 6 through the embedding port so that it can pass through the embedding port. After most of the plastic tube is pressed into the main cavity 6, the plastic tube will restore its original shape under the action of its own elasticity to fit tightly to the inner wall of the main cavity 6. At this time, the main cavity 6 completes the preliminary positioning of the tube to be shaped; the mold is adjusted to a closed mold state through the driving component so that the parting surface of the first sub-mold 9 is tightly against the parting surface of the second sub-mold 3, and the main cavity 6 and the auxiliary cavity A limiting channel is enclosed and the plastic pipe to be shaped is stably kept in the target shape by the constraint of the limiting channel; heating is performed by the heating unit to increase the temperature in the limiting channel and maintain it within a predetermined range, and the internal stress of the plastic pipe to be shaped is released after being heated; heating is stopped and the plastic pipe is shaped after the temperature in the limiting channel drops to room temperature. That is to say, even without the constraint of the limiting channel, the corresponding plastic pipe can be stably kept in the target shape; the mold is adjusted to the split state by the driving component to make the split surface of the first sub-mold 9 away from the split surface of the second sub-mold 3, so that the staff can take out the plastic pipe that has been shaped from the insertion port.

[0028] The device constrains the plastic pipe to be shaped to the target shape through a limiting channel, and then heats it through a heating unit to eliminate the internal stress of the plastic pipe. It can accurately bend and shape the plastic pipe, and has a high product yield. Since the main cavity has an embedding opening at the parting surface of the first sub-mold, the plastic pipe to be shaped can be quickly embedded in the main cavity 6 and the plastic pipe can be initially limited. The operation is convenient, and it can largely avoid the plastic pipe accidentally detaching from the main cavity 6 during the mold closing process, causing the parting surface of the second sub-mold 3 and the first sub-mold 9 to crush the plastic pipe.

[0029] In some embodiments, the cross section of the limiting channel is circular, that is, the cross section of the plastic tube is circular, and the cross section of the main cavity 6 is in a major arc shape, and the cross section of the auxiliary cavity is in a minor arc shape. Since the cross section of the plastic tube is circular, the peripheral side of the plastic tube is relatively smooth, which facilitates pressing in or taking out the plastic tube from the insertion port.

[0030] In some embodiments, the ratio between the chord length corresponding to the cross section of the main cavity 6 and the diameter corresponding to the cross section of the main cavity 6 is 0.6 to 0.8. Since the above ratio is above 0.6, it is convenient to press in or take out the plastic pipe from the embedding port; since the above ratio is below 0.8, the main cavity 6 can play a good role in limiting the corresponding plastic pipe. Specifically, in this embodiment, the ratio between the chord length corresponding to the cross section of the main cavity 6 and the diameter corresponding to the cross section of the main cavity 6 is 0.75, which can further facilitate the pressing in or taking out of the plastic pipe from the embedding port and can further play a good role in limiting the corresponding plastic pipe.

[0031] In some embodiments, at least one end of the main cavity 6 is located inside the first sub-mold 9, which can reduce the heat loss at the corresponding position during the heating process.

[0032] In some embodiments, at least one end of the main cavity 6 is located on the peripheral side of the first sub-mold 9, that is, the main cavity 6 has an open port on the peripheral side of the first sub-mold 9. It should be noted that the peripheral side of the first sub-mold 9 refers to the side wall of the first sub-mold 9 connected to the parting surface of the first sub-mold 9. In the process of taking out the plastic pipe from the main cavity 6 after the plastic pipe is formed, the staff can extend their fingers or other strip-shaped auxiliary tools into the inside of the plastic pipe from the direction perpendicular to the side wall where the corresponding end of the main cavity 6 is located, so as to facilitate the main cavity 6 to pry up the plastic pipe in the direction close to the second sub-mold 3, so that the plastic pipe can be removed from the opening of the main cavity 6 facing the direction of the second sub-mold 3, which is convenient to operate and can improve the overall work efficiency. Specifically, in this embodiment, one end of the main cavity 6 is located inside the first sub-mold 9, and the other end of the main cavity 6 is located on the peripheral side of the first sub-mold 9, which is convenient for the main cavity 6 to pry up the plastic pipe in the direction close to the second sub-mold 3 while minimizing the heat loss during the heating process.

[0033] In some embodiments, the intersection of the parting surface of the first sub-mold 9 and the main cavity 6, and the intersection of the parting surface of the second sub-mold 3 and the auxiliary cavity are both provided with rounded corners. Specifically, in this embodiment, the radius of the rounded corners is 0.4 mm to 0.6 mm. The rounded corners at the intersection of the parting surface of the first sub-mold 9 and the main cavity 6 can reduce the risk of scratching the plastic pipe during the process of pressing or removing the plastic pipe from the insertion port, and the rounded corners at the intersection of the parting surface of the second sub-mold 3 and the auxiliary cavity can reduce the risk of scratching the plastic pipe during the mold closing process.

[0034] In some embodiments, one of the parting surface of the first sub-mold 9 and the parting surface of the second sub-mold 3 is provided with a locating pin 13, and the other is provided with a locating groove matched with the locating pin 13. The locating pin 13 cooperates with the locating groove, so that the first sub-mold 9 and the second sub-mold 3 can achieve a relatively high mold clamping accuracy, and avoid the first sub-mold 9 and the second sub-mold 3 from being deflected along the plane where the corresponding parting surface is located after the mold is clamped.

[0035] In some embodiments, the end of the positioning pin 13 is hemispherical, which has a good guiding effect and facilitates its insertion into the positioning groove.

[0036] In some embodiments, a receiving cavity is provided inside the first sub-mold 9, and a plug interface connected to the receiving cavity is provided on the peripheral side of the first sub-mold 9, and the heating unit includes a heating resistor 10 and a heating thermostat 8, wherein the heating resistor 10 is plugged into the receiving cavity through the plug interface; and the heating thermostat 8 is electrically connected to the heating resistor 10. By energizing the heating resistor 10 through the heating thermostat 8, the heating resistor 10 can be controlled to generate heat, so that the plastic pipe in the limiting channel releases the internal stress. The heating resistor 10 is connected to the receiving cavity of the first sub-mold 9 by plugging. On the one hand, after the heating resistor 10 is plugged into the receiving cavity, the outer side surface of the heating resistor 10 is in close contact with the inner side surface of the receiving cavity, which can improve the heat transfer efficiency between the two and facilitate the rapid transfer of the heat generated by the heating resistor 10 to the first sub-mold 9; on the other hand, if it is necessary to produce plastic pipes of different target shapes by replacing the mold, it is only necessary to pull out the heating resistor 10 from the receiving cavity corresponding to the mold of the previous production cycle and plug it into the receiving cavity corresponding to the mold of the next production cycle. There is no need to design multiple sets of heating resistors 10, which is easy to operate and can relatively reduce production costs.

[0037] It should be noted that the peripheral side of the first sub-mold 9 includes multiple side walls of the first sub-mold 9 connected to the parting surface of the first sub-mold 9, and the plug-in interface and one end of the main cavity 6 can be located on the same side wall included in the peripheral side of the first sub-mold 9. At this time, the plug-in interface and the above-mentioned end of the main cavity 6 are spaced apart; in addition, the plug-in interface and one end of the main cavity 6 can also be located on different side walls included in the peripheral side of the first sub-mold 9. Specifically, in the present embodiment, the heating resistor 10 is in the shape of a rectangular parallelepiped, and the accommodating cavity is in the shape of a rectangular parallelepiped groove matched with the heating resistor 10. The accommodating cavity and the plug interface are not shown in the drawings of the present application; the plug interface and one end of the main cavity 6 are located on different side walls included in the peripheral side of the first sub-mold 9, and the side wall where the plug interface is located is arranged opposite to the heating thermostat 8. That is to say, the heating thermostat 8 is located in the direction of the side wall where the end of the main cavity 6 is located, which can avoid the heating thermostat 8 interfering with the staff prying up the plastic pipe from the main cavity 6. In addition, since the heating thermostat 8 is close to the plug interface, the length of the wire between the heating thermostat 8 and the heating resistor 10 can be relatively reduced.

[0038] In some embodiments, the orthographic projection area of ​​the main cavity on the parting surface of the first sub-mold 9 is located within the orthographic projection area of ​​the accommodating cavity in the first sub-mold 9, that is, along the direction perpendicular to the parting surface of the first sub-mold 9, the projection of the main cavity 6 is located within the projection range of the heating resistor 10; the inner wall of the accommodating cavity close to the main cavity 6 is parallel to the parting surface of the first sub-mold 9, that is, the distance between the main cavity and the heating resistor 10 at different positions along the preset direction is basically the same, so as to ensure that the plastic pipe in the limiting channel is heated relatively evenly during the molding process.

[0039] In some embodiments, the heating unit further includes a temperature sensor 7 electrically connected to the heating thermostat 8, and the temperature sensor 7 is embedded in the position of the parting surface of the first sub-mold 9 close to the main cavity 6 or in the position of the parting surface of the second sub-mold 3 close to the auxiliary cavity. Specifically, in this embodiment, the temperature sensor 7 is embedded in the position of the parting surface of the first sub-mold 9 close to the main cavity 6. By limiting the installation position of the temperature sensor 7, the temperature of the area near the limiting channel can be more accurately monitored. After receiving the temperature feedback from the temperature sensor 7, the heating thermostat 8 can adjust the current passing through the heating resistor 10, so that the temperature of the plastic pipe in the limiting channel further tends to the predetermined range.

[0040] In some embodiments, the heat exchange assembly further includes a cooling unit, which is installed in at least one of the first sub-mold 9 and the second sub-mold 3 to absorb the heat in the main cavity 6 and the auxiliary cavity. After the plastic pipe is heated to release the internal stress, the cooling unit is arranged to absorb the heat of the first sub-mold 9 and the second sub-mold 3, so as to accelerate the cooling process of the plastic pipe and improve the overall production efficiency.

[0041] In some embodiments, the parting surface of the first sub-mold 9 is provided with a cooling groove 11 spaced apart from the main cavity 6, the cooling groove 11 is located on the peripheral side of the main cavity 6, and the ends of the cooling groove 11 are all located on the peripheral side of the first sub-mold 9, that is, the cooling groove 11 can be arranged around the main cavity 6, or can be arranged to semi-surround the main cavity 6, or two cooling grooves can be arranged and the two cooling grooves are respectively located on both sides of the main cavity 6. Specifically, in this embodiment, the end of the cooling groove 11 and one end of the main cavity 6 are located on the same side wall included in the peripheral side of the first sub-mold 9, and the end of the cooling groove 11 is spaced apart from the above-mentioned end of the main cavity 6, that is, the cooling groove 11 is arranged to semi-surround the main cavity 6. The cooling unit includes a liquid cooling pipe 4 and a liquid cooling machine 14. The liquid cooling pipe 4 can be detachably installed in the cooling tank 11. Specifically, in the present embodiment, the liquid cooling pipe 4 is made of a flexible material, that is, the cooling pipe can be bent according to the extension direction of the cooling tank 11, and has strong adaptability; the liquid cooling machine 14 is used to provide heat exchange medium to the liquid cooling pipe 4, and the liquid cooling pipe 4 extends from the end of the cooling tank 11 and is connected to the liquid cooling machine 14. On the one hand, the liquid cooler 14 is used to cool the heat exchange medium and drive the heat exchange medium to circulate rapidly in the liquid cooling tube 4 to absorb the heat of the mold and accelerate the cooling process of the plastic pipe; on the other hand, since the cooling groove 11 is located on the peripheral side of the main cavity 6, it can absorb the heat of various parts of the plastic pipe in the limiting channel more evenly, and can reduce the risk of re-appearance of internal stress in the plastic pipe due to excessive differences in the cooling speed of various parts of the plastic pipe; on the other hand, since the liquid cooling tube 4 can be detachably installed in the cooling groove 11, if it is necessary to produce plastic pipes of different target shapes by replacing the mold, it is only necessary to take out the cooling groove 11 corresponding to the mold of the previous production cycle and install it in the cooling groove 11 corresponding to the mold of the next production cycle. There is no need to design multiple sets of cooling tubes, which is easy to operate and can relatively reduce production costs.

[0042] In some embodiments, the interval between the cooling groove 11 and the main cavity 6 is 5 mm to 8 mm, which can achieve a better heat dissipation effect on the plastic pipe in the limiting channel.

[0043] In some embodiments, the plastic pipe shaping device further comprises a workbench, and one or more support columns 12 are provided between the first sub-mold 9 and the workbench, the support columns 12 are fixedly connected to the workbench, and the first sub-mold 9 is detachably mounted on the support columns 12. Specifically, in this embodiment, the first sub-mold 9 is detachably mounted on the support columns 12 by bolt connection. By providing the support columns 12 to isolate the first sub-mold 9 from the workbench, the heat of the first sub-mold 9 can be prevented from being quickly transferred to the workbench during the heating process, so as to reduce the loss of some heat during the heating process; the support columns 12 and the first sub-mold 9 are detachably connected, and if it is necessary to produce plastic pipes of different target shapes, only the first sub-mold 9 can be replaced, and there is no need to design a set of plastic pipe shaping devices separately, which can reduce production costs.

[0044] In some embodiments, the driving assembly includes a telescopic member 1, which is located on the side of the second sub-mold 3 facing away from the first sub-mold 9, one end of the telescopic member 1 is fixed to the workbench through a frame, and the other end of the telescopic member 1 is fixed to an adapter 2, which is detachably mounted on the second sub-mold 3, and the adapter 2 is made of hard rubber. Specifically, in this embodiment, the second sub-mold 3 is detachably mounted on the adapter 2 by bolt connection. It should be noted that the frame in this application only serves to fix one end of the telescopic member 1 to the workbench, and the above-mentioned frame is not shown in the drawings of this application. In a natural state, the weight of the second sub-mold 3 itself cannot cause the adapter 2 to deform significantly, so the second sub-mold 3 can be connected to the telescopic part 1 more stably through the adapter 2; in the mold closing process, the first sub-mold 9 and the second sub-mold 3 can achieve a higher positioning accuracy through the matching positioning pins 13 and positioning grooves. Due to the existence of assembly errors of the drive component and the mold, during the insertion of the positioning pin 13 into the positioning groove, the second sub-mold 3 may undergo a small displacement in a direction perpendicular to the axis of the telescopic part 1. The adapter 2 can allow the above-mentioned displacement through its own deformation, which can relatively improve the overall structural stability of the drive component; the adapter 2 and the second sub-mold 3 are detachably connected. If it is necessary to produce plastic pipes of different target shapes, only the second sub-mold 3 can be replaced, and there is no need to design a set of plastic pipe shaping devices separately, which can reduce production costs.

[0045] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A plastic pipe shaping device, characterized in that: include: The mold comprises a first sub-mold and a second sub-mold capable of being molded together, the parting surface of the first sub-mold is provided with a main cavity extending along a preset direction, the parting surface of the second sub-mold is provided with an auxiliary cavity adapted to the main cavity, the main cavity has an embedding opening at the position of the parting surface of the first sub-mold, the embedding opening is in a contracted shape compared to the interior of the main cavity, so that the plastic pipe to be molded can be embedded and clamped to the main cavity through the embedding opening, When the mold is in a mold-closing state, the main cavity and the auxiliary cavity are combined to form a limiting channel, and the shape and size of the limiting channel match the shape and size of the plastic pipe in the target shape; a heat exchange assembly installed on at least one of the first sub-mold and the second sub-mold, the heat exchange assembly comprising a heating unit, the heating unit being used to provide heat to the main cavity and the auxiliary cavity; The driving component is connected to at least one of the first sub-mold and the second sub-mold to adjust the distance between the parting surface of the first sub-mold and the parting surface of the second sub-mold.

2. The plastic pipe shaping device according to claim 1, characterized in that: The cross section of the limiting channel is circular.

3. The plastic pipe shaping device according to claim 2, characterized in that: The ratio between the chord length corresponding to the cross section of the main cavity and the diameter corresponding to the cross section of the main cavity is 0.6 to 0.

8.

4. The plastic pipe shaping device according to claim 1, characterized in that: At least one end of the main cavity is located inside the first sub-mold; and / or, At least one end of the main cavity is located on the peripheral side of the first sub-mold; and / or, One of the parting surface of the first sub-mold and the parting surface of the second sub-mold is convexly provided with a positioning pin, and the other is provided with a positioning groove matched with the positioning pin.

5. The plastic pipe shaping device according to claim 1, characterized in that: The first sub-mold has an interior with an accommodating cavity, and the periphery of the first sub-mold has an insertion interface connected to the accommodating cavity, and the heating unit includes: A heating resistor is plugged into the accommodating cavity through the plug interface; A heating thermostat is electrically connected to the heating resistor.

6. The plastic pipe shaping device according to claim 5, characterized in that: The heating unit also includes a temperature sensor electrically connected to the heating temperature controller, and the temperature sensor is embedded in a position of the parting surface of the first sub-mold close to the main cavity or embedded in a position of the parting surface of the second sub-mold close to the auxiliary cavity.

7. The plastic pipe shaping device according to claim 1, characterized in that: The heat exchange assembly further includes a cooling unit installed on at least one of the first sub-mold and the second sub-mold to absorb heat in the main cavity and the auxiliary cavity.

8. The plastic pipe shaping device according to claim 7, characterized in that: The parting surface of the first sub-mold is provided with cooling grooves spaced apart from the main cavity, the cooling grooves are located on the peripheral side of the main cavity, and the ends of the cooling grooves are both located on the peripheral side of the first sub-mold, and the cooling unit comprises: A liquid cooling pipe, detachably installed in the cooling tank; A liquid cooler is used to provide heat exchange medium to the liquid cooling pipe, and the liquid cooling pipe extends from the end of the cooling tank and is connected to the liquid cooler.

9. The plastic pipe shaping device according to claim 1, characterized in that: It also includes a workbench, wherein one or more support columns are arranged between the first sub-mold and the workbench, the support columns are fixedly connected to the workbench, and the first sub-mold is detachably mounted on the support columns.

10. The plastic pipe shaping device according to claim 9, characterized in that: The driving assembly includes a telescopic part, which is located on the side of the second sub-mold facing away from the first sub-mold. One end of the telescopic part is fixed to the workbench through a frame, and the other end of the telescopic part is fixed to a adapter. The adapter can be detachably installed on the second sub-mold, and the adapter is made of hard rubber.

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