Automatic continuous molding production line for electrical cabinet installation strips

Abstract

The present invention discloses an automated continuous forming production line for electrical cabinet mounting strips, which includes a lubricating oil coating device, and the lubricating oil coating device includes: two groups of rollers, each group of rollers is two fixed rollers arranged in an upper and lower position, and the two fixed rollers do not contact each other; an oil tank is arranged between the two groups of rollers, and contains lubricating oil; a sponge block is placed on the oil tank and directly contacts the lubricating oil in the oil tank; wherein, the steel belt passes through the two groups of rollers and is placed on the fixed rollers at the lower position of each group of rollers, and at the same time, the top of the sponge block that absorbs the lubricating oil is against the steel belt, and the steel belt is pulled forward at a uniform speed by a traction mechanism, and the sponge block evenly coats the lubricating oil on the side that is against the steel belt. The present invention allows the steel belt to slide forward on the sponge block that absorbs the lubricating oil, and uses its own gravity to bear pressure on the sponge block, and the side that is against the sponge block is evenly coated with lubricating oil during the forward process, forming a uniform oil film.

Description

Technical Field

[0001] The invention relates to the technical field of applying lubricating oil to the surface of a steel strip, in particular to an automatic continuous forming production line for mounting strips of an electrical cabinet. Background Art

[0002] The installation strip of the electrical cabinet is used to standardize the installation of various components and wiring in the electrical cabinet. The installation strip is made of rolled steel strip as raw material. It is pulled by a traction mechanism and leveled after unwinding by an uncoiler. It also needs to undergo forming processing, such as cutting, bending, stamping and other processes to finally form the installation strip. Lubricating oil will be applied to the steel strip after leveling and before forming. Its function includes but is not limited to improving the forming effect. The lubricating oil can improve the fluidity and deformation performance of the steel strip during the bending process, make the bending more uniform, reduce defects such as cracks and creases during the bending process, and improve the dimensional accuracy and appearance quality of the finished product.

[0003] Existing equipment often uses a nozzle to spray lubricating oil on the steel strip to form an oil film. However, if the nozzle is blocked, damaged or the spraying pressure is unstable, the lubricating oil will be sprayed unevenly. For example, the lubricating oil forms a thick film in some areas, while there is almost no lubricating oil in some areas. The thick film may cause oil flow and waste, and the surface of the steel strip will be too greasy, absorbing a large amount of dust and impurities, affecting subsequent processing procedures. For example, it may cause loose welding during welding and affect the adhesion of the coating during painting. The oil-deficient areas cannot play a good lubricating role, increasing friction and wear. Summary of the invention

[0004] The purpose of the invention is to propose an automatic continuous forming production line for electrical cabinet mounting strips, and to improve the problem of uneven oil film formed on a leveled steel strip by a spray head.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The automatic continuous molding production line for electrical cabinet mounting strips contains a lubricating oil coating device, which includes:

[0007] Two sets of rollers, each set of rollers consists of two fixed rollers arranged vertically, and the two fixed rollers do not contact each other;

[0008] An oil tank is provided between two sets of rollers and contains lubricating oil;

[0009] A sponge block is placed on the oil tank and is in direct contact with the lubricating oil in the oil tank;

[0010] The steel belt passes through two sets of rollers and is placed on a fixed roller below each set of rollers. At the same time, the top of the sponge block that absorbs the lubricating oil is against the steel belt. The steel belt is pulled forward at a uniform speed by a traction mechanism, and the sponge block evenly applies the lubricating oil to the side that is against the steel belt.

[0011] Preferably, the coating device further comprises:

[0012] Two vertical panels are arranged symmetrically to each other;

[0013] A rectangular frame is fixedly arranged between two vertical plates;

[0014] A fixed plate, fixedly connected in the rectangular frame;

[0015] An adjustment plate is slidably arranged in the rectangular frame;

[0016] A threaded rod is rotatably connected to the rectangular frame and extends through the fixed plate;

[0017] The nut is fixedly arranged on the adjusting plate and is threadably connected with the threaded rod.

[0018] Preferably, the fixed plate and the adjustment plate are both fixedly connected to the clamping plates, the fixed roller passes through the clamping plates and is fixedly connected to one of the clamping plates, and is slidably connected to the other clamping plate, the oil tank is fixedly connected to the clamping plates, the rectangular frame is installed with a hydraulic cylinder, the output shaft of the hydraulic cylinder is fixedly connected to the support rod, the oil tank seal is slidably provided with a push rod, one end of the push rod is fixedly connected to the cross plate, and the other end is placed on the support rod.

[0019] Preferably, the transverse plate is provided with a plurality of through holes, and a plurality of columnar protrusions extend from a side of the sponge block opposite to the transverse plate. The columnar protrusions extend through the through holes into the oil groove below and are always in contact with the lubricating oil in the oil groove.

[0020] Preferably, a flat plate is bonded to the side of the sponge block opposite to the transverse plate, the flat plate is fixedly connected to the limiting block, and a limiting groove is provided on the side of the transverse plate opposite to the sponge block. When the sponge block is placed on the transverse plate, the limiting block is just stuck in the limiting groove.

[0021] Preferably, the sponge block is composed of a plurality of small blocks that do not contact each other, with a gap formed between two adjacent small blocks, each small block is provided with a flat plate and a limiting block, and the number of limiting grooves provided on the transverse plate is the same as the number of small blocks.

[0022] Preferably, a mounting groove is provided on each small block, a blocking plate is placed in the mounting groove, and the blocking plate is located in the middle of the thickness of the small block.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The invention advances by sliding the steel belt on the sponge block which absorbs the lubricating oil, and bears pressure on the sponge block by its own gravity. The side which contacts the sponge block is evenly coated with the lubricating oil in the process of advancing, so as to form an even oil film. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic structural diagram of a first embodiment of a lubricating oil coating device proposed by the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the connection structure between the rectangular frame and the plywood;

[0027] Figure 3 for Figure 1 Schematic diagram of the structure of the oil tank and sponge block;

[0028] Figure 4 for Figure 1 Schematic diagram of the cross-section of the connection structure between the oil tank and the sponge block;

[0029] Figure 5 This is a schematic cross-sectional view of the connection structure between two horizontal plates and each small block in the lubricating oil coating device proposed by the present invention.

[0030] In the figure: 1. fixed roller; 2. oil tank; 3. sponge block; 4. vertical plate; 5. rectangular frame; 6. fixed plate; 7. adjustment plate; 8. threaded rod; 9. nut; 10. clamping plate; 11. hydraulic cylinder; 12. cross plate; 13. through hole; 14. cylindrical protrusion; 15. flat plate; 16. limit block; 17. limit groove; 18. mounting groove; 19. blocking plate; 20. support rod; 21. push rod. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Reference Figure 1 -Attached Figure 4 , Embodiment 1, an automated continuous molding production line for electrical cabinet mounting strips, comprising a lubricating oil coating device, the device comprising:

[0033] Two sets of rollers, each set of rollers is two fixed rollers 1 arranged vertically, and the two fixed rollers 1 do not contact each other;

[0034] The oil tank 2 is provided between the two sets of rollers and contains lubricating oil;

[0035] The sponge block 3 is placed on the oil tank 2 and is in direct contact with the lubricating oil in the oil tank 2;

[0036] The steel belt passes through two sets of rollers and is placed on the fixed roller 1 below each set of rollers. At the same time, the top of the sponge block 3 that absorbs the lubricating oil is against the steel belt. The steel belt is pulled forward at a uniform speed by the traction mechanism, and the sponge block 3 evenly applies the lubricating oil to the side against the steel belt.

[0037] Through the above technical solution, the steel belt slides forward on the sponge block 3 that absorbs the lubricating oil, and uses its own gravity to bear pressure on the sponge block 3. The side that contacts the sponge block 3 is evenly coated with lubricating oil during the forward process to form a uniform oil film. The new sponge block 3 can also be replaced periodically to solve the problem of uneven coating caused by excessive dust attached to the sponge block 3.

[0038] The coating device also includes:

[0039] Two vertical plates 4 are arranged symmetrically with each other;

[0040] A rectangular frame 5 is fixedly arranged between two vertical plates 4;

[0041] A fixed plate 6, fixedly connected in the rectangular frame 5;

[0042] An adjustment plate 7 is slidably disposed in the rectangular frame 5;

[0043] A threaded rod 8 is rotatably connected to the rectangular frame 5 and passes through the fixed plate 6;

[0044] The nut 9 is fixedly disposed on the adjusting plate 7 and is threadedly connected to the threaded rod 8 .

[0045] The fixed plate 6 and the adjusting plate 7 are both fixedly connected with the clamping plates 10, the fixed roller 1 passes through the clamping plates 10 and is fixedly connected with one of the clamping plates 10, and is slidably connected with the other clamping plate 10, the oil tank 2 is fixedly connected with the clamping plates 10, the rectangular frame 5 is installed with a hydraulic cylinder 11, the output shaft of the hydraulic cylinder 11 is fixedly connected with a support rod 20, the oil tank 2 is sealed and slidably provided with a push rod 21, one end of the push rod 21 is fixedly connected with the cross plate 12, and the other end is placed on the support rod 20.

[0046] Through the above technical solution, the sponge block 3 can be adjusted up and down, and the part of the steel belt entering between the two sets of rollers can be supported upward and cooperated with the rollers on both sides to prevent the steel belt from bending due to its own gravity, so that the steel belt can be kept flat, and the oil film formed by the lubricating oil applied on the steel belt will not be offset due to the bending deformation of the steel belt itself, thereby ensuring the stability of the oil film formation.

[0047] The transverse plate 12 is provided with a plurality of through holes 13 , and a plurality of columnar protrusions 14 extend from a side of the sponge block 3 opposite to the transverse plate 12 . The columnar protrusions 14 extend through the through holes 13 into the oil groove 2 below and are always in contact with the lubricating oil in the oil groove 2 .

[0048] A flat plate 15 is bonded to the side of the sponge block 3 opposite to the transverse plate 12, and the flat plate 15 is fixedly connected to a limiting block 16. A limiting groove 17 is provided on the side of the transverse plate 12 opposite to the sponge block 3. When the sponge block 3 is placed on the transverse plate 12, the limiting block 16 is just stuck into the limiting groove 17.

[0049] In actual operation, the traction mechanism usually pulls the steel belt forward at a speed of 1-3m / min. As shown in the attached figure, the steel belt uniformly advances from point A to point B after contacting the sponge block 3. The sponge block 3 near point A uniformly applies the adsorbed lubricating oil on the contact side of the steel belt to form an oil film. The farther away from point A, the less oil the sponge block 3 produces. Since the length of the sponge block 3 is too large compared to its thickness, the loss caused by the sponge block 3 near point A applying lubricating oil to the steel belt will be more quickly absorbed and replenished by the lubricating oil in the oil tank 2, and will not absorb the lubricating oil near point B of the sponge block 3 for overall uniform replenishment. As a result, as the coating operation time of the steel belt increases, more and more lubricating oil near point B of the sponge block 3 will be carried by the steel belt to the vicinity of point B and accumulate and produce a surplus, which in turn causes oil droplets to splash out when the steel belt is removed from point B of the sponge block 3. Therefore, the following improvements are made:

[0050] Reference Figure 5 In the second embodiment, the sponge block 3 is composed of a plurality of small blocks that do not contact each other, and a gap is formed between two adjacent small blocks. Each small block is provided with a flat plate 15 and a limit block 16, and the number of limit grooves 17 provided on the horizontal plate 12 is the same as the number of small blocks.

[0051] Through the above technical solution, the original complete sponge block 3 is divided into multiple identical small blocks, and each small block has an initial section point A in contact with the steel belt and an end point B detached from the steel belt. The lubricating oil originally accumulated near point B of the sponge block 3 is shared among the vicinities of point B of multiple small blocks, and the surplus lubricating oil generated at point B will flow back into the oil tank 2 along the gap between two adjacent small blocks to avoid accumulation of lubricating oil.

[0052] A mounting groove 18 is provided on each small block, and a blocking plate 19 is placed in the mounting groove 18. The blocking plate 19 is located in the middle of the thickness of the small block.

[0053] Through the above technical solution, the steel strip moves forward at a uniform speed on each small block, and the lubricating oil coating is provided near point A. Due to the blocking effect of the baffle plate 19, the lubricating oil near point A cannot be directly replenished from the vertical oil tank 2, but must be replenished from the lubricating oil near point B in the horizontal direction. The lubricating oil near point B can be directly replenished from the vertical oil tank 2, thereby avoiding the accumulation of lubricating oil.

[0054] Working principle:

[0055] Adjust the threaded rod 8 to move the two clamping plates 10 away from each other, so as to facilitate the placement of the sponge block 3 on the horizontal plate 12, and put the lubricating oil in the oil tank 2 in an appropriate amount, and then move the two clamping plates 10 closer to each other until the two oil tanks 2 fit together, thus completing the preparation work before coating;

[0056] The steel strip passes through two sets of rollers and is placed on the fixed roller 1 below each set of rollers. The hydraulic cylinder 11 is adjusted to move the sponge block 3 upward to abut against the steel strip to keep the steel strip flat as a whole in the lubricating oil coating device.

[0057] The steel belt is pulled by the force provided by the traction mechanism, and the sponge block 3 evenly applies the lubricating oil on the side against the steel belt.

[0058] It should be noted that: the horizontal plate 12 is controlled by the hydraulic cylinder 11, and then the height of the sponge block 3 is controlled. When the horizontal plate 12 is placed at the lowest point that can be adjusted, the columnar protrusion 14 in contact with the lubricating oil can be adaptively compressed because it is also made of sponge material. When the horizontal plate 12 is placed at the highest point that can be adjusted, the columnar protrusion 14 returns to its original state and its length can ensure contact with the lubricating oil in the oil tank 2. At the same time, when coating the steel strip, it is necessary to pay attention to the highest level of the lubricating oil in the oil tank 2, and it is necessary to add lubricating oil in time to ensure that the lubricating oil does not exceed the oil tank 2 and is not lower than half of the depth of the oil tank 2.

[0059] The limit block 16 is configured with considerable gravity, which is sufficient to ensure that the friction between the steel belt and the sponge block 3 when the steel belt moves forward evenly will not cause the sponge block 3 and the cross plate 12 to slide relative to each other, thereby ensuring the stability of the position of the sponge block 3.

[0060] The above-mentioned lubricating oil coating device can evenly coat one side of the steel strip. If you want to coat the other side as well, you can configure two lubricating oil coating devices. The upper and lower positions of the two lubricating oil coating devices are fixedly arranged in correspondence, so that the steel strip moved out of one of the lubricating oil coating devices bends in the opposite direction and enters the other lubricating oil coating device, thereby completing the operation of evenly coating both sides.

[0061] The push rod 21 is placed on the support rod 20. When the support rod 20 does not provide support force, the push rod 21 slides down under the gravity of the cross plate 12. The power provided by the hydraulic cylinder 11 can be transmitted through the support rod 20 to make the two push rods 21 move up synchronously to lift the sponge block 3.

[0062] The automatic continuous forming production line of electrical cabinet installation strips has the following devices in the order of process steps: raw material placement device, leveling device, lubricating oil coating device, punching device, forming device and cutting device;

[0063] Raw material unwinding device: used to place rolled raw materials, usually steel strips or aluminum strips. Equipped with an automatic tension control system to ensure that the raw materials always maintain a stable tension during the unwinding process to avoid material deformation or production interruption caused by uneven tension;

[0064] Leveling device: Leveling the unwinding raw materials to eliminate the stress and deformation of the materials during rolling and transportation, ensure the flatness of the material surface, and provide a good foundation for the subsequent forming process. The leveling machine adopts multi-roller leveling technology, and can adjust the roller distance and leveling pressure according to the thickness and material of the material;

[0065] Punching device: Punching holes on the raw material according to the preset size and spacing. Using CNC punching machine or high-speed punching machine, equipped with automatic mold switching system, it can quickly and accurately complete the punching needs of mounting strips of different specifications, and can realize the processing of various hole types such as round holes, square holes, special-shaped holes, etc.

[0066] Forming device: This is the core part of the production line. Through a series of forming dies, the raw materials are gradually bent and formed into the required shape of the electrical cabinet installation strip. The forming dies are made of high-precision alloy steel, and are precision machined and heat-treated to ensure the wear resistance and dimensional accuracy of the dies. The forming host is driven by a servo motor, which can accurately control the forming speed and position to ensure product consistency;

[0067] Cutting device: Cut the continuously formed installation strips according to the set length. It adopts flying saw cutting or hydraulic cutting. Flying saw cutting is suitable for high-speed production. It can accurately cut the installation strips during movement and the cut is smooth. Hydraulic cutting is suitable for cutting thicker materials. It has strong cutting force and high cut quality.

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The automatic continuous molding production line for electrical cabinet installation strips is characterized by: Contains a lubricating oil coating device, the lubricating oil coating device includes: Two sets of roller pairs, each set of roller pairs comprises two fixed rollers (1) arranged vertically, and the two fixed rollers (1) do not contact each other; An oil tank (2) is provided between the two sets of rollers and contains lubricating oil; A sponge block (3) is placed on the oil tank (2) and is in direct contact with the lubricating oil in the oil tank (2); The steel belt passes through two sets of rollers and is placed on a fixed roller (1) below each set of rollers. At the same time, the top of a sponge block (3) that absorbs lubricating oil is pressed against the steel belt. The steel belt is pulled forward at a uniform speed by a traction mechanism, and the sponge block (3) evenly applies lubricating oil to the side that is pressed against the steel belt. Two vertical plates (4) are arranged symmetrically to each other; A rectangular frame (5) is fixedly arranged between the two vertical plates (4); The rectangular frame (5) is provided with a hydraulic cylinder (11), the output shaft of the hydraulic cylinder (11) is fixedly connected to a support rod (20), the oil groove (2) is provided with a push rod (21) in a sealing and sliding manner, one end of the push rod (21) is fixedly connected to the horizontal plate (12), and the other end is placed on the support rod (20); The sponge block (3) is composed of a plurality of small blocks that do not contact each other, and a gap is formed between two adjacent small blocks. Each small block is provided with a flat plate (15) and a limit block (16). A transverse plate (12) is provided between the oil tank (2) and the sponge block (3). The number of limit grooves (17) provided on the transverse plate (12) is the same as the number of the small blocks. The limit blocks (16) are just inserted into the limit grooves (17). An installation groove (18) is provided on each small block. A blocking plate (19) is placed in the installation groove (18). The blocking plate (19) is located at the middle position of the thickness of the small block.

2. The automatic continuous molding production line for electrical cabinet mounting strips according to claim 1 is characterized in that: The lubricating oil coating device also includes: A fixed plate (6) fixedly connected in the rectangular frame (5); An adjustment plate (7) slidably disposed in the rectangular frame (5); A threaded rod (8) rotatably connected to the rectangular frame (5) and passing through the fixed plate (6); The nut (9) is fixedly mounted on the adjustment plate (7) and is threadedly connected to the threaded rod (8).

3. The automatic continuous molding production line for electrical cabinet mounting strips according to claim 2 is characterized in that: The fixed plate (6) and the adjustment plate (7) are both fixedly connected to the clamping plates (10), the fixed roller (1) passes through the clamping plates (10) and is fixedly connected to one of the clamping plates (10), and is slidably connected to the other clamping plate (10), and the oil groove (2) is fixedly connected to the clamping plates (10).

4. The automatic continuous molding production line for electrical cabinet mounting strips according to claim 3 is characterized in that: The transverse plate (12) is provided with a plurality of through holes (13), and a plurality of columnar protrusions (14) extend from a surface of the sponge block (3) opposite to the transverse plate (12). The columnar protrusions (14) extend through the through holes (13) into the oil groove (2) below and are always in contact with the lubricating oil in the oil groove (2).

5. The automatic continuous molding production line for electrical cabinet mounting strips according to claim 3 is characterized in that: A flat plate (15) is bonded to a side of the sponge block (3) opposite to the transverse plate (12), the flat plate (15) is fixedly connected to a limiting block (16), a limiting groove (17) is provided on a side of the transverse plate (12) opposite to the sponge block (3), and when the sponge block (3) is placed on the transverse plate (12), the limiting block (16) is exactly inserted into the limiting groove (17).

Images