Material guiding module and bending machine
By preheating the plastic-coated copper and aluminum busbars using a material guiding module, the problem of stress whitening of the insulating plastic during low-temperature bending is solved, thereby improving bending efficiency and reducing labor intensity.
Patent Information
- Application Number
- CN202520427816.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-12
AI Technical Summary
When bending plastic-coated copper-aluminum busbars at low temperatures, the insulating plastic is prone to stress whitening. Existing technologies solve this problem by adding an extra heating process, which is inefficient and labor-intensive.
The material guiding module is designed, including guiding components and a heating cover. The plastic-coated copper and aluminum busbars are preheated by a heater to ensure that the insulating plastic reaches a high temperature before bending, thus avoiding stress whitening.
This technology enables uniform heating of the insulating plastic before bending the plastic-coated copper-aluminum busbar, solving the problem of stress whitening, improving bending efficiency, and reducing labor intensity.
Smart Images
Figure CN223918658U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bending processing technology, and in particular to a material guiding module and a bending machine. Background Technology
[0002] Plastic-coated copper and aluminum busbars achieve insulation by wrapping insulating plastic around the outer perimeter of the copper or aluminum busbar. They are widely used in the power industry for power transmission. In practical applications, the plastic-coated copper and aluminum busbars need to be bent into a predetermined shape according to the actual installation environment to save space while meeting actual power transmission requirements.
[0003] In related technologies, bending machines are required to bend PVC-coated copper and aluminum busbars. However, during the bending process, if the ambient temperature is low, the insulating plastic on the outer periphery of the busbar may exhibit stress whitening. The existing solution involves adding a heating step after the bending process, where workers use a hot air gun to heat the area where stress whitening occurs. This not only significantly reduces the bending efficiency of the copper and aluminum busbars but also results in high labor intensity and fatigue.
[0004] Therefore, there is an urgent need to invent a material guiding module and a bending machine to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a material guiding module and a bending machine to preheat the plastic-coated copper and aluminum busbars before bending them, thereby solving the problem of stress whitening that easily occurs when insulating plastics are bent at low temperatures.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] The material feeding module includes:
[0008] A guide assembly includes a core mold and a connecting shaft. Multiple core molds are arranged at intervals along a preset direction. The connecting shaft is sequentially fixed to multiple core molds along the preset direction. Each core mold has a through hole extending along the preset direction. The through holes in the multiple core molds form a guide channel for plastic-coated copper-aluminum strips to pass through.
[0009] A heating cover has a heating cavity extending along the preset direction, with openings at both ends of the heating cavity along the preset direction, and the heating cover covers the outer periphery of at least a portion of the core mold and at least a portion of the connecting shaft along the preset direction;
[0010] A heater, the output of which is connected to the heating chamber, is configured to heat the plastic-coated copper-aluminum busbar located in the heating chamber.
[0011] As an optional solution, the heating cover is provided with an extended pipe, the extended pipe extends outward in a direction perpendicular to the preset direction, the extended pipe has a communicating cavity that communicates with the heating cavity, and the output end of the heater is fixedly connected to the end of the extended pipe away from the heating cover and communicates with the communicating cavity.
[0012] As an optional solution, the heating cover is provided with a plurality of extended pipes at intervals along the preset direction, each of the extended pipes is provided with a communicating cavity that communicates with the heating cavity, and each of the extended pipes is fixedly connected to the output end of a heater.
[0013] As an optional solution, the guide assembly includes multiple connecting shafts, which are together fixedly connected to the core mold along the preset direction.
[0014] As an optional solution, each of the core molds is provided with a mounting through hole extending along the preset direction. The mounting through hole and the through hole do not interfere with each other. The connecting shaft is fixedly connected to the mounting through hole in sequence along the preset direction.
[0015] As an optional solution, each of the core molds includes:
[0016] The main core, wherein the main core has the through hole; and
[0017] The mounting base has a fixing hole extending along the preset direction, the main core is fixed in the fixing hole, and the mounting base has a mounting through hole.
[0018] As an optional feature, each of the core molds is further provided with:
[0019] A guide opening extends along the preset direction. One end of the guide opening is connected to the end of the through hole that allows the plastic-coated copper-aluminum busbar to pass through along the preset direction. The inner diameter of the guide opening gradually decreases along the preset direction from the end away from the through hole toward the end closer to the through hole. The minimum inner diameter of the guide opening is the inner diameter of the through hole.
[0020] As an optional solution, the guide port is connected to both ends along the preset direction.
[0021] As an optional feature, the heating temperature of the heater is not less than 20°C and not more than 60°C.
[0022] A bending machine includes a conveying module, a bending module, a control module, and a material guiding module as described above. The control module is communicatively connected to the conveying module, the bending module, and the material guiding module. The conveying module is configured to convey the plastic-coated copper-aluminum busbar into a guide channel within the material guiding module. The bending module is configured to bend the plastic-coated copper-aluminum busbar discharged along the guide channel.
[0023] The beneficial effects of this utility model are:
[0024] The material guiding module provided by this utility model arranges multiple core molds in the guiding assembly at intervals along a preset direction, and connects the multiple core molds sequentially along the preset direction using connecting shafts. Each core mold is provided with through holes extending along the preset direction, so that the multiple through holes form a guiding channel for the plastic-coated copper-aluminum busbar to pass through. Moreover, since the core molds are arranged at intervals along the preset direction, when the plastic-coated copper-aluminum busbar is located in the guiding channel, part of the plastic-coated copper-aluminum busbar can directly contact the outside. Combined with the heating cover covering at least part of the core molds and at least part of the connecting shaft along the preset direction, the heating cover can cover the part of the plastic-coated copper-aluminum busbar that is in direct contact with the outside. The heating chamber in the heating cover is heated by the heater, which can heat the part of the plastic-coated copper-aluminum busbar that is in direct contact with the outside. Combined with the movement of the plastic-coated copper-aluminum busbar along the preset direction in the guiding channel, the plastic-coated copper-aluminum busbar can be heated evenly, so that the insulating plastic wrapped around the copper-aluminum busbar can be subjected to subsequent bending processing at a higher temperature. This effectively solves the problem that the insulating plastic is prone to stress whitening when bent at a lower temperature.
[0025] This utility model also provides a bending machine. By applying the above-mentioned material guiding module, it is possible to heat the plastic-coated copper-aluminum busbar before bending, so that the insulating plastic wrapped around the copper-aluminum busbar in the plastic-coated copper-aluminum busbar is subjected to subsequent bending processing at a higher temperature. This effectively solves the problem that the insulating plastic wrapped around the copper-aluminum busbar in the plastic-coated copper-aluminum busbar is prone to stress whitening when bent at a lower temperature. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the material guiding module provided in this embodiment of the utility model;
[0027] Figure 2 This is a cross-sectional schematic diagram of the material guiding module provided in this embodiment of the utility model;
[0028] Figure 3 This is a schematic diagram of the structure of the guide component provided in an embodiment of the present utility model;
[0029] Figure 4 yes Figure 2 A magnified view of a section at point A in the middle;
[0030] Figure 5 yes Figure 2 A magnified view of a section at point B in the middle;
[0031] Figure 6 This is an exploded view of the core mold provided in an embodiment of this utility model.
[0032] In the picture:
[0033] 100. Guide assembly; 110. Core mold; 111. Through hole; 112. Guide opening; 113. Mounting through hole; 114. Mounting base; 1141. Fixing hole; 115. Main core; 120. Connecting shaft; 200. Heating cover; 210. Extended pipe; 211. Connecting cavity; 220. Heating cavity. Detailed Implementation
[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0037] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0038] In practical applications of PVC-coated copper-aluminum busbars, to save installation space, the busbars need to be bent into a predetermined shape according to the actual installation environment. Related technologies require the use of a bending machine to bend the PVC-coated copper-aluminum busbars. However, during the bending process, if the ambient temperature is low, the insulating plastic on the outer periphery of the busbar may exhibit stress whitening. The existing solution involves adding a heating step after the bending process, where workers use a hot air gun to heat the area where stress whitening occurs. This not only significantly reduces the bending efficiency of the copper-aluminum busbars but also increases labor intensity and fatigue.
[0039] To address the aforementioned problems, this embodiment provides a bending machine. The bending machine includes a conveying module, a bending module, a control module, and a material guiding module. The control module is communicatively connected to the conveying module, the bending module, and the material guiding module. The material guiding module is provided with a guide channel for plastic-coated copper-aluminum strips to pass through. The material guiding module can heat the plastic-coated copper-aluminum strips located in the guide channel. The conveying module is configured to convey the plastic-coated copper-aluminum strips through the guide channel within the material guiding module. The bending module is configured to bend the plastic-coated copper-aluminum strips discharged along the guide channel. This bending machine is equipped with a control module that communicates with the conveying module, bending module, and material guiding module. The conveying module feeds the plastic-coated copper-aluminum busbars into the guide channel within the material guiding module. The material guiding module heats the plastic-coated copper-aluminum busbars in the guide channel. When the busbars exit the guide channel, they are heated to a high temperature. At this point, the bending module bends the busbars along the guide channel. Due to the high temperature, the stress in the molecular chains of the insulating plastic surrounding the copper-aluminum busbars is reduced, effectively solving the problem of stress whitening of the insulating plastic during bending. It should be noted that the specific structures and working principles of the control module, conveying module, and bending module are existing technologies and will not be elaborated upon here.
[0040] Combination Figures 1-3The specific structure of the material guiding module is described below. The material guiding module includes a guiding component 100, a heating cover 200, and a heater (not shown in the figure). The guiding component 100 includes a core mold 110 and a connecting shaft 120. Multiple core molds 110 are arranged at intervals along a preset direction. The connecting shaft 120 is sequentially fixedly connected to multiple core molds 110 along the preset direction. Each core mold 110 has a through hole 111 extending along the preset direction. The through holes 111 in the multiple core molds 110 form a guiding channel for the plastic-coated copper-aluminum busbar to pass through. The heating cover 200 has a heating cavity 220 extending along the preset direction. Both ends of the heating cavity 220 are provided with openings along the preset direction. The heating cover 200 covers the outer periphery of at least a portion of the core molds 110 and at least a portion of the connecting shaft 120 along the preset direction. The output end of the heater is connected to the heating cavity 220. The heater is configured to heat the plastic-coated copper-aluminum busbar located in the heating cavity 220.
[0041] This material guiding module arranges multiple core molds 110 within the guiding assembly 100 at intervals along a preset direction, and connects the multiple core molds 110 sequentially along the preset direction using a connecting shaft 120. Each core mold 110 has a through hole 111 extending along the preset direction, so that the multiple through holes 111 form a guiding channel for the plastic-coated copper-aluminum busbar to pass through. Moreover, because the core molds 110 are arranged at intervals along the preset direction, when the plastic-coated copper-aluminum busbar is located in the guiding channel, part of the plastic-coated copper-aluminum busbar can directly contact the outside. Combined with the heating cover 200 covering at least part of the core molds 110 and at least part of the heating cover 200 along the preset direction, this allows the plastic-coated copper-aluminum busbar to directly contact the outside. The heating cover 200 can cover the part of the plastic-coated copper-aluminum busbar that is in direct contact with the outside world on the outer periphery of the connecting shaft 120. The heating chamber 220 inside the heating cover 200 is heated by the heater, which can heat the part of the plastic-coated copper-aluminum busbar that is in direct contact with the outside world. Combined with the movement of the plastic-coated copper-aluminum busbar in the guide channel along the preset direction, the plastic-coated copper-aluminum busbar can be heated evenly, so that the insulating plastic wrapped around the outer periphery of the copper-aluminum busbar can be bent at a higher temperature. This effectively solves the problem that the insulating plastic is prone to stress whitening when bent at a lower temperature.
[0042] Furthermore, in this embodiment, such as Figure 2 As shown, the preset direction is left-right. The guide assembly 100 includes three core molds 110 arranged at intervals along the left-right direction. The connecting shaft 120 sequentially and fixedly connects two core molds 110 along the left-right direction. The heating cover 200 is sleeved on the outer periphery of the middle core mold 110 among the three core molds and part of the connecting shaft 120. In other embodiments, the specific number of core molds 110 can be arbitrarily adjusted according to actual needs.
[0043] To improve the fixing effect of the connecting shaft 120 on the core mold 110, the guide assembly 100 includes multiple connecting shafts 120, which together fix the core mold 110 along a preset direction. It should be noted that, in this embodiment, the guide assembly 100 includes six connecting shafts 120, which together fix the three core molds 110 within the guide assembly 100.
[0044] like Figure 4 As shown, each core mold 110 has a mounting through hole 113 extending in a preset direction. The mounting through hole 113 and the through hole 111 do not interfere with each other. The connecting shaft 120 is fixedly connected to the mounting through hole 113 in sequence along the preset direction. By opening the mounting through hole 113 extending in the preset direction on the core mold 110, it is ensured that the mounting through hole 113 and the through hole 111 do not interfere with each other. By using the mounting through hole 113 to fix the connecting shaft 120, the fixing strength between the connecting shaft 120 and the core mold 110 can be guaranteed. It should be noted that in this embodiment, the connecting shaft 120 and the mounting through hole 113 are fixed by adhesive.
[0045] In this embodiment, as Figure 6 As shown, each core mold 110 includes a main core 115 and a mounting base 114. The main core 115 has a through hole 111, and the mounting base 114 has a fixing hole 1141 extending in a preset direction. The main core 115 is fixed in the fixing hole 1141, and the mounting base 114 has a mounting through hole 113. By disassembling the core mold 110 into a main core 115 and a mounting base 114, and opening a fixing hole 1141 in the mounting base 114 to fix the main core 115 in the fixing hole 1141, the main core 115 and the mounting base 114 are assembled together. A through hole 111 is set in the main core 115 and a mounting through hole 113 is set in the mounting base 114. When the through hole 111 or the mounting through hole 113 is damaged, the main core 115 or the mounting base 114 can be replaced separately according to actual needs without replacing the entire core mold 110, thus saving costs.
[0046] To facilitate the connection between the plastic-coated copper-aluminum busbar and the through hole 111, such as Figure 5As shown, each core mold 110 is also provided with a guide opening 112. The guide opening 112 extends along a preset direction, and one end of the guide opening 112 is connected to the end of the through hole 111 into which the plastic-coated copper-aluminum busbar passes along the preset direction. The inner diameter of the guide opening 112 gradually decreases along the preset direction from the end away from the through hole 111 towards the end closer to the through hole 111. The minimum inner diameter of the guide opening 112 is the inner diameter of the through hole 111. By providing a guide opening 112 at the end of the through hole 111 into which the plastic-coated copper-aluminum busbar passes along the preset direction, the inner diameter of the guide opening 112 gradually decreases along the preset direction from the end away from the through hole 111 towards the end closer to the through hole 111, and the minimum inner diameter of the guide opening 112 is guaranteed to be the inner diameter of the through hole 111, a smooth transition between the guide opening 112 and the through hole 111 is achieved. When the plastic-coated copper-aluminum busbar passes through the core mold 110, the plastic-coated copper-aluminum busbar needs to pass through the guide opening 112 and the through hole 111 in sequence. At this time, the guide opening 112 can provide guidance for the plastic-coated copper-aluminum busbar to pass through the through hole 111.
[0047] In this embodiment, to improve the assembly efficiency of the connecting shaft 120 and the core mold 110, guide ports 112 are connected to both ends of the guide port 112 along a preset direction. Regardless of whether the core mold 110 is assembled in the forward or reverse direction relative to the connecting shaft 120, it can be ensured that the end of the through hole 111 for the plastic-coated copper-aluminum strip to pass through along the preset direction is provided with a guide port 112.
[0048] In one optional embodiment, the heater is a hot air blower. The hot air blower blows hot air into the heating chamber 220, using the hot air to heat the plastic-coated copper-aluminum busbar located in the heating chamber 220. The hot air blower not only has high heating efficiency for heating the plastic-coated copper-aluminum busbar, but also achieves uniform heating of the plastic-coated copper-aluminum busbar.
[0049] As an optional solution, the heating temperature of the hot air blower is not less than 20℃ and not more than 60℃. By keeping the heating temperature of the hot air blower within the range of 20℃ to 60℃, the insulating plastic around the outer periphery of the plastic-coated copper-aluminum busbar can be effectively heated while avoiding damage to the insulating plastic due to excessive heating temperature, thus improving the protection of the insulating plastic. It should be noted that in this embodiment, the heating temperature of the hot air blower is 40℃. In other embodiments, the heating temperature of the hot air blower can be adjusted arbitrarily within the range of 20℃ to 60℃ according to actual needs; this embodiment does not impose specific limitations.
[0050] In this embodiment, as Figure 1 and Figure 2As shown, the heating cover 200 is provided with an extended pipe 210, which extends outward in a direction perpendicular to a preset direction. The extended pipe 210 has a connecting cavity 211 that communicates with the heating chamber 220. The output end of the hot air blower is fixedly connected to the end of the extended pipe 210 away from the heating cover 200 and communicates with the connecting cavity 211. By providing an extended pipe 210 extending outward in a direction perpendicular to a preset direction on the heating cover 200, and by having a connecting cavity 211 within the extended pipe 210 that communicates with the heating chamber 220, the output end of the hot air blower is fixedly connected to the end of the extended pipe 210 away from the heating cover 200 and communicates with the connecting cavity 211. This allows the hot air blown by the hot air blower to enter the heating chamber 220 along the connecting cavity 211, thus keeping the hot air blower away from the heating cover 200 and the guide assembly 100. This reduces the installation space required for the heating cover 200 and the guide assembly 100 while improving the protection of the hot air blower.
[0051] In other embodiments, to further improve the heating effect of the hot air blower on the plastic-coated copper-aluminum busbar, multiple extended pipes 210 can be provided at intervals along a preset direction on the heating cover 200, so that each extended pipe 210 is provided with a connecting cavity 211 that communicates with the heating cavity 220, and each extended pipe 210 is fixedly connected to the output end of a hot air blower.
[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A material guiding module, characterized in that, The application relates to a guiding assembly (100) comprising a plurality of core moulds (110) arranged along a preset direction and a connecting shaft (120) fixedly connected with the core moulds (110) along the preset direction, wherein each core mould (110) is provided with a through hole (111) extending along the preset direction, and the through holes (111) in the core moulds (110) form a guiding channel for a plastic-coated copper-aluminum bar. A heating cover (200) is provided with a heating cavity (220) extending along the preset direction, and the two ends of the heating cavity (220) along the preset direction are both provided with an opening; the heating cover (200) covers at least part of the outer periphery of the core mould (110) and the connecting shaft (120) along the preset direction. A heater is provided with an output end in communication with the heating cavity (220), and the heater is configured to heat the plastic-coated copper-aluminum bar in the heating cavity (220). The heating cover (200) is provided with an extension pipeline (210) extending outward along a direction perpendicular to the preset direction, the extension pipeline (210) is provided with a communication cavity (211) in communication with the heating cavity (220), and the output end of the heater is fixedly connected with an end of the extension pipeline (210) away from the heating cover (200) and in communication with the communication cavity (211).
2. The material guiding die set of claim 1, wherein, The heating cover (200) is provided with a plurality of extension pipelines (210) arranged along the preset direction, each extension pipeline (210) is provided with a communication cavity (211) in communication with the heating cavity (220), and each extension pipeline (210) is fixedly connected with the output end of one heater.
3. The material guiding die set of claim 2, wherein, The guiding assembly (100) comprises a plurality of connecting shafts (120) fixedly connected with the core moulds (110) along the preset direction.
4. The material guiding die set according to any one of claims 1 to 3, characterized in that Each core mould (110) is provided with a mounting through hole (113) extending along the preset direction, the mounting through hole (113) and the through hole (111) are not interfered with each other, and the connecting shaft (120) is fixedly connected with the mounting through hole (113) along the preset direction.
5. The material guiding die set according to any one of claims 1 to 3, characterized in that Each core mould (110) comprises:
6. The material guiding die set of claim 5, wherein, a main core body (115) provided with the through hole (111); and an installation base body (114) provided with a fixing hole (1141) extending along the preset direction, the main core body (115) is fixed in the fixing hole (1141), and the installation base body (114) is provided with the mounting through hole (113). Each core mould (110) is further provided with:
7. The material guiding die set of any of claims 1-3, wherein, A guide hole (112) extends along the preset direction, one end of the guide hole (112) is connected with one end of the through hole (111) along the preset direction for the plastic-coated copper-aluminum bar to pass in, the inner diameter of the guide hole (112) gradually decreases from the end away from the through hole (111) to the end close to the through hole (111) along the preset direction, and the minimum inner diameter of the guide hole (112) is the inner diameter of the through hole (111).
8. The material guiding die set of claim 7, wherein, Both ends of the guide hole (112) along the preset direction are connected with the guide hole (112).
9. The material guiding die set of any of claims 1-3, wherein, The heating temperature of the heater is not less than 20 DEG C and not more than 60 DEG C.
10. A bending machine characterized by The control module is in communication connection with the conveying module, the bending module and the material guiding module, the conveying module is configured to convey the plastic-coated copper-aluminum bar to the guide channel in the material guiding module, and the bending module is configured to bend the plastic-coated copper-aluminum bar discharged along the guide channel.