Bus duct forming apparatus

Abstract

The application discloses a bus duct forming equipment and belongs to the technical field of bus duct processing. The bus duct forming equipment comprises built-in pressing dies for extruding forming upper and lower built-in shells and side pressing dies for extruding left and right side shells. The side pressing dies can be located in the groove bodies of the side shells, and the two side pressing dies are arranged longitudinally in parallel. Two sides between the two side pressing dies are respectively provided with blank plates for stamping forming the two built-in shells, and the two sides of each blank plate are respectively attached to the surfaces of the corresponding two side pressing dies. A gasket block in contact with the two built-in pressing dies is slidably arranged between the two built-in pressing dies. When the two built-in pressing dies are moved towards each other through the first driving components connected with the two built-in pressing dies, the two blank plates are stamped into the built-in shells with the shape of channel steel under the cooperation of the gasket block. The bus duct can be quickly and efficiently formed and assembled, and the forming quality is good.

Description

Technical Field

[0001] This invention relates to the field of busbar trunking processing technology, and more specifically to a busbar trunking forming equipment. Background Technology

[0002] Busbar trunking is a closed metal device made of copper or aluminum busbar columns. It is mainly used to distribute large amounts of power to various components in a distributed system, and it has increasingly replaced electrical wires and cables in indoor low-voltage power transmission trunk line projects. In some parts of my country, over 90% of the outgoing lines from the distribution rooms of buildings with 12 or more floors—that is, the main lines leading to the floors—use busbar trunking, and busbar trunking is also used from 630KVA transformers to distribution cabinets.

[0003] Busbar trunking is characterized by its modular design, commercial production, small size, large capacity, short design and construction cycle, easy installation and disassembly, non-flammability, safety and reliability, and long service life. A common busbar trunking structure is as follows: Figure 1 As shown, it mainly consists of an outer shell and several stacked busbars located inside the shell. The outer shell is an assembled structure, generally including two side shells arranged horizontally in the shape of channel steel, and two inner shells arranged vertically. Within the rectangular area enclosed by the inner shells and side shells, several stacked busbars are installed. The busbars are generally rectangular strip-shaped structures, with a partial bend at one end. These bent ends are spaced apart and parallel to each other, ultimately forming a connection end. In actual production, based on different needs and different models, the specific structure of this type of busbar trunking will vary. In addition to the busbars and shell, there will also be end castings, connector lugs, grounding terminals, and socket components.

[0004] Currently, the production of conventional busbar trunking typically involves installing positioning molds on a guide rail transmission device. The side and inner outer shells, pre-processed on other equipment, are then assembled one by one, requiring manual positioning. Specifically, the lower inner shell is first placed on a mold, followed by the busbars stacked one by one. Then, the side shells are installed on both sides of the stacked busbars. Finally, the upper inner shell is inserted through the opening between the side shells. Simultaneously, care must be taken to correct the stacked shape of the busbars by tapping the side or inner shells to form a standard rectangular mounting cavity, thus correcting the busbar placement structure and completing the pre-assembly of the busbar trunking. Only then can it be fixed using automatic welding equipment or automatic riveting machines. While the required tooling is simple, the operation is quite cumbersome, and the final product quality is highly dependent on the operator's experience. Summary of the Invention

[0005] The present invention addresses the shortcomings of the prior art mentioned in the background section by proposing a busbar trunking forming device to solve the problems of cumbersome operation, low efficiency, and high dependence on operator experience in the existing busbar trunking forming process.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: The present invention provides a busbar trunking forming device, including an internal die for extruding and forming two internal shells (upper and lower), and a side die for extruding two side shells (left and right). The side die is located precisely within the groove of the side shell, and the two side dies are arranged longitudinally parallel. On the upper and lower sides between the two side dies, blank plates for stamping and forming two internal shells are respectively installed, and the two sides of each blank plate are flat against the surface of the corresponding side die. A pad is also slidably installed between the two internal dies and in contact with it. When the two internal dies are brought closer together by a first driving component connected thereto, the two blank plates are stamped into internal shells that are approximately in the shape of channel steel under the cooperation of the pad.

[0007] Furthermore, it also includes a second drive component for clamping the blank plate of the stamped side housing, and a third drive component for driving the side dies to move closer or further apart from each other;

[0008] After the two inner shells are formed, the fourth driving component connected to the pad block drives it to slide away from the two inner shells, and then the third driving component drives the two side molds to move away from each other by a certain distance, so that the second driving component can put the blank plate into a position that can be tightly attached to the side of the inner shell, so that it can be bent into the side shell by a bending component.

[0009] Furthermore, the bending component includes a threaded sleeve rotatably mounted on the built-in die. Each end of the threaded sleeve is threadedly fitted with a lead screw. Under the action of a corresponding limiting rod, when the threaded sleeve rotates, it causes the pressure rollers fixed at the ends of the two lead screws to move away from each other, so that the pressure rollers bend the portion of the blank plate that extends beyond the side die.

[0010] Furthermore, the threaded sleeve is rotatably mounted on a mounting handle, which is fixed to the built-in pressure mold, and the limiting rod is L-shaped and fixed to the mounting handle.

[0011] Furthermore, the lead screw includes a rectangular tube segment, which slides into a rectangular hole on the limiting rod.

[0012] Furthermore, a micro motor is fixed on the mounting handle, and a drive gear is fixed on the main shaft of the micro motor. The drive gear meshes with a driven gear coaxially fixed on the threaded sleeve.

[0013] Furthermore, a right-angled trapezoidal wedge is fixed to the side of the built-in mold;

[0014] The pressure roller is mounted on the end of the lead screw via an elastic telescopic column. Under elastic action, the pressure roller can maintain extrusion contact with the wedge block. When the two pressure rollers move away from each other and bend the blank plate, the pressure roller moves uphill along the inclined surface of the wedge block so that when it rolls over the corresponding surface of the side die, it can quickly pop out in the vertical direction and bend the inner flange of the side shell into shape.

[0015] Furthermore, the third drive component also enables the side mold to slide along the length of the groove in the side housing to completely exit the side housing.

[0016] Furthermore, when the pressure roller squeezes and bends the inner flange, the threaded sleeve reverses so that the connecting arm connecting the pressure roller is close to the outer side of the inner flange, so that the two outer shells firmly clamp the stacked busbar and the two inner outer shells located between them.

[0017] Furthermore, it also includes welding components or riveting components, which, after the mold has completely detached from the side housing, weld or rivet the portion between the side housing and the inner housing to form a mating connection.

[0018] Compared to current technologies in the field, this invention offers a series of advantages: In this busbar trunking forming equipment, the forming of the outer shell and the overall assembly of the busbar trunking are performed simultaneously. Instead of pre-processing the outer shell using existing stamping equipment and then transferring it for positioning and assembly, many intermediate processes are eliminated. The entire process, from raw materials to the finished or semi-finished busbar trunking, is completed in one step. During assembly, the inner and side shells are extruded based on their respective positions, naturally maintaining their relative positional relationship. This eliminates the need for excessive clamping and positioning tools or redundant clamping and positioning operations. Once the entire outer shell is formed, the pre-assembly before fixing the busbar trunking is complete, allowing for direct welding or riveting, resulting in high efficiency and reliability. Attached Figure Description

[0019] To more clearly illustrate the core technical solution of the present invention, at least one embodiment based on the core concept of the present invention will be briefly introduced below, supplemented by structural principle diagrams required in relevant prior art when necessary. Of course, the following figures are only some feasible embodiments of the concept of the present invention. For those skilled in the art, without additional creative effort, they can also expand some possible adaptive technical designs based on these figures.

[0020] Figure 1This is a front view of the busbar trunking that needs to be processed in this invention;

[0021] Figure 2 This is the right view of the busbar trunking;

[0022] Figure 3 This is a schematic diagram of the blank plate being installed on two side molds;

[0023] Figure 4 This is a schematic diagram of the stamping process of the inner outer shell;

[0024] Figure 5 This is a schematic diagram of the structure after the inner shell is formed and the pad has slid off;

[0025] Figure 6 This is a diagram of a drive structure for threaded bushings;

[0026] Figure 7 This is a structural diagram of stacked motherboards being placed into the space after the pad blocks have slid away;

[0027] Figure 8 It is the formed busbar trunking in Figure 1 Schematic diagram of the cross section at point AA;

[0028] Figure 9 This is a side view of a limit rod.

[0029] Explanation of reference numerals in the attached drawings: 1. Busbar, 101. Connecting end, 2. Side outer shell, 201. Inner flange, 3. Inner shell, 4. Inside mold, 5. Side mold, 6. Blank plate, 7. Lead screw, 8. Pressure roller, 9. Micro motor, 10. Drive gear, 11. Driven gear, 12. Limiting rod, 1201. Rectangular hole, 13. Mounting handle, 14. Elastic telescopic column, 15. Blank plate, 16. Wedge block, 17. Connecting arm, 18. Pad block. Detailed Implementation

[0030] To make the creative features and technical means of this invention more clearly understood, the relevant technical solutions of this invention will be discussed in detail below. Those skilled in the art should understand that all the embodiments described below are solutions, and only some feasible or recommended implementation structures or methods of this invention, not all embodiments embodied in this invention.

[0031] See for those skilled in the art Figures 1-3 As shown in the figure, this embodiment discloses a busbar trunking forming equipment, which mainly processes as follows: Figure 1-2The busbar trunking shown primarily includes built-in molds 4 for extruding and forming two inner shells 3. These two molds 4 can be directly driven by existing components such as hydraulic rods or robotic arms, and the possible movements include, but are not limited to, vertical movement relative to each other. It also includes side molds 5 for extruding and forming two side shells 2. Specifically, these side molds 5 are positioned precisely within the grooves of the side shells 2 to guide the forming of the groove shape of the side shells 2. The two side molds 5 are arranged longitudinally parallel to each other. In terms of structural design, such as... Figure 3 On the upper and lower sides between the two side molds 5, blank plates 6 for stamping two inner shells 3 are respectively installed, and the two sides of each blank plate 6 are flatly attached to the surface of the corresponding side molds 5. A pad block 18 is also slidably installed between the two inner molds 4 in contact with them. Figure 4 This is to withstand the impact force during the forming of the two inner shells 3, as well as the stamping die cavity involved in forming the inner shells 3. In practice, the two blank plates 6 can be transported using existing transfer equipment and placed in corresponding positions for stamping. For example, the upper blank plate 6 can be placed directly on the upper surface of the two side dies 5, while the lower blank plate 6 can be directly supported by the lower inner die 4. When the two inner dies 4 are brought together by the first drive component connected to them, with the cooperation of the pad block 18, the two blank plates 6 are stamped into an inner shell 3 that is approximately in the shape of a channel steel, that is... Figure 4 In the structure shown, the inner shell 3 is not pressed into shape, and the first driving component mentioned above, as described above, can be any device or component in the prior art that can realize the corresponding transfer action. This embodiment does not provide a specific description, but those skilled in the art can easily choose to implement it. The same applies to the several driving components mentioned later.

[0032] As one of the specific implementation structures, this busbar forming equipment also includes a second driving component for clamping the blank plate 15 of the stamped side outer shell 2, and a third driving component for driving the side molds 5 to move closer or further apart. After the two inner outer shells 3 are formed, the fourth driving component connected to the pad 18 can drive the pad 18 to slide away from between the two inner outer shells 3. This can be done by sliding directly along the length direction or along the width direction, depending on the specific driving method used. Figure 5 The pad 18 is then slid out smoothly, freeing up the installation space for the stacked busbars 1. Subsequently, the third drive component drives the two side molds 5 to move away from each other by a certain distance, so that the second drive component can place the blank plate 15 into a position that can fit tightly against the side of the inner shell 3. At this point, the blank plate 15 replaces the side molds 5 to restrict the external placement of the formed inner shell 3. Then, the upper and lower sides of the blank plate 15 are bent by a bending component to finally form the side shell 2 of this busbar groove.

[0033] like Figure 5-6 In this embodiment, the bending component specifically includes a threaded sleeve rotatably mounted on the built-in pressure mold 4. Each end of this threaded sleeve is threadedly fitted with a lead screw 7. Under the action of the corresponding limiting rod 12, when the threaded sleeve rotates, it forms a screw mechanism, causing the pressure rollers 8 fixed to the ends of the two lead screws 7 to move away from each other. Figure 8 As shown, the pressure roller 8 bends the portion of the blank plate 15 that extends beyond the side mold 5 to form the side shell 2.

[0034] Specifically, such as Figure 6 As shown, this threaded sleeve is rotatably mounted on a mounting handle 13, which is fixed to the built-in mold 4. The limiting rod 12 is L-shaped and fixed to the mounting handle 13. More specifically, this screw 7 includes a rectangular tube segment, which slides into a rectangular hole 1201 on the limiting rod 12. The structure of the limiting rod 12 here can be as follows: Figure 9 As shown, the rectangular hole 1201 is mainly designed to prevent the lead screw 7 from rotating, so that the pressure roller 8 can only move linearly when the threaded sleeve rotates in place.

[0035] During production, such as Figure 6 Those skilled in the art can further fix a micro motor 9 to the mounting handle 13, and a drive gear 10 is fixed to the main shaft of the micro motor 9. The drive gear 10 meshes with a driven gear 11 coaxially fixed to the threaded sleeve. Starting the micro motor 9 can cause the threaded sleeve to rotate; thus, Figure 7 As shown, the inner shell 3 is extruded and formed, while the stacked busbar 1 has been extruded between the two inner shells 3 and installed. The two pressure rollers 8 move away from each other, bending the corresponding side portions of the blank plate 15 to form the inner flange 201 of the inner shell. To better form the inner flange 201, as... Figure 7 As shown, a right-angled trapezoidal wedge 16 is fixed to the side of the built-in die 4. Simultaneously, a pressure roller 8 is mounted on the end of the lead screw 7 via an elastic telescopic column 14. The elastic telescopic column 14 has a large elastic force; therefore, the pressure roller 8 can maintain compressive contact with the wedge 16 under elastic action. Furthermore, during the bending of the blank plate 15 while the two pressure rollers 8 move away from each other, as... Figure 7The pressure roller 8 moves uphill along the inclined surface of the wedge block 16 so that when it rolls over the corresponding surface of the side die 5, the huge elastic force is released and it naturally and quickly pops out in the vertical direction, thereby bending the inner flange 201 of the side shell 2 into shape. It is very ingenious. Moreover, the potential energy impact brought by this instantaneous elastic change can form the inner flange 201 very well. Unlike some traditional stamping, which uses a die and a punch with the same shape as the side shell 2 to press and form in one go, the huge rigid impact can cause stress concentration and cracking at the inner flange 201, or even cause the edge of the inner flange 201 to be pulled out with a taper.

[0036] As an implementation detail, the third driving component in this embodiment can also make the side mold 5 slide along the length direction of the groove of the side shell 2 to completely remove the side shell 2 and achieve demolding.

[0037] Generally, in this embodiment, when the inner flange 201 is obtained by rolling with the pressure roller 8, the pressure roller 8 can be prevented from rolling completely outside the side outer shell 2, thereby keeping the two outer shells 2 horizontally clamped, thus completing the clamping and positioning of the busbar trough and facilitating subsequent fixed assembly. In this embodiment, in order to fully ensure the stability of the inner outer shell 3 and the side outer shell 2 when the busbar trough is combined into an integral structure, it is best that after the pressure roller 8 has squeezed and bent the inner flange 201, it slides vertically outside the inner flange 201, and then the threaded sleeve reverses, so that the connecting arm 17 connecting the pressure roller 8 is close to the outer side of the inner flange 201, so that the two outer shells 2 are firmly clamped between the stacked busbar 1 and the two inner outer shells 3. Finally, fixed assembly can be performed based on traditional fixed process equipment. For example, this device includes welding components or riveting components. After the mold is completely separated from the side shell 2, the welding components or riveting components weld or rivet the part between the side shell 2 and the inner shell 3. The specific welding or riveting process is the same as the fixing between two plates in general machining, which will not be described in this embodiment.

[0038] Finally, it should be noted that in all the contents described in this invention, terms such as “comprising,” “including,” and other general statements are intended to cover non-exclusive inclusion techniques, such that the process, article, or method, or related apparatus of the corresponding element, means not only including these technical elements, but also the inherent features of a certain process, article, apparatus, or method.

[0039] As should be clearly understood by those skilled in the art, any person skilled in the art can make adaptive improvements or equivalent substitutions based on the above embodiments after fully understanding the technical principles of the present invention. Thus, these technical solutions that do not depart from the core technical concept of the present invention should all be included within the protection scope of the present invention.

Claims

1. A busbar trunking forming device, characterized in that: It includes an internal die (4) for extruding and forming two inner shells (3) and a side die (5) for extruding two side shells (2) on the left and right sides. The side die (5) can be located exactly in the groove of the side shell (2). The two side dies (5) are arranged in parallel longitudinally. On the upper and lower sides between the two side dies (5), blank plates (6) for stamping and forming two inner shells (3) are respectively installed. The two sides of each blank plate (6) are flatly attached to the surface of the corresponding two side dies (5). A pad (18) is also slidably installed between the two internal dies (4) and in contact with it. When the two internal dies (4) approach each other through the first driving component connected to them, the two blank plates (6) are stamped into inner shells (3) in the shape of channel steel with the cooperation of the pad (18). It also includes a second drive component for gripping the blank plate (15) of the stamped side shell (2), and a third drive component for driving the side molds (5) to move closer or further apart from each other; After the two inner shells (3) are formed, the fourth driving component connected to the pad (18) drives it to slide away from the two inner shells (3), and then the third driving component drives the two side molds (5) to move away from each other by a certain distance, so that the second driving component puts the blank plate (15) into a position that can be closely attached to the side of the inner shell (3) so that it can be bent into the side shell (2) by a bending component; The bending component includes a threaded sleeve rotatably mounted on the built-in die (4). Each end of the threaded sleeve is threaded with a lead screw (7). Under the action of the corresponding limiting rod (12), when the threaded sleeve rotates, it causes the pressure rollers (8) fixed at the ends of the two lead screws (7) to move away from each other, so that the pressure rollers (8) bend the part of the blank plate (15) that extends beyond the side die (5). A right-angled trapezoidal wedge (16) is fixed to the side of the built-in mold (4); The end of the lead screw (7) is equipped with the pressure roller (8) through an elastic telescopic column (14). The pressure roller (8) can maintain a squeezing contact with the wedge (16) under elastic action. When the two pressure rollers (8) move away from each other and bend the blank plate (15), the pressure roller (8) moves uphill along the inclined surface of the wedge (16) so that when it rolls over the corresponding surface of the side die (5), it can quickly pop out in the vertical direction and bend the inner flange (201) of the side shell (2) into shape. The third driving component can also make the side mold (5) slide along the length direction of the groove of the side shell (2) to completely detach from the side shell (2) and achieve demolding; When the pressure roller (8) bends the inner flange (201), the threaded sleeve reverses so that the connecting arm (17) connecting the pressure roller (8) is close to the outer side of the inner flange (201), so that the two outer shells (2) firmly clamp the stacked busbar (1) and the two inner outer shells (3) located between them.

2. The busbar trunking forming equipment according to claim 1, characterized in that: The threaded sleeve is rotatably mounted on a mounting handle (13), which is fixed on the built-in mold (4). The limiting rod (12) is L-shaped and fixed on the mounting handle (13).

3. The busbar trunking forming equipment according to claim 2, characterized in that: The lead screw (7) includes a rectangular tube segment, which is slidably engaged with a rectangular hole (1201) on the limiting rod (12).

4. The busbar trunking forming equipment according to claim 2, characterized in that: A micro motor (9) is also fixed on the mounting handle (13). A drive gear (10) is fixed on the main shaft of the micro motor (9). The drive gear (10) meshes with a driven gear (11) coaxially fixed on the threaded sleeve.

5. The busbar trunking forming equipment according to claim 1, characterized in that: It also includes welding components or riveting components, which, after the side mold (5) is completely detached from the side shell (2), weld or rivet the part between the side shell (2) and the inner shell (3) to form a bond.

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