Cold forging punch forming equipment and method for electric power fittings

Abstract

The invention discloses cold forging punch forming equipment and method for an electric power fitting, and belongs to the technical field of electric power fitting machining. Cold forging punch forming equipment for electric power fittings comprises a main rack and further comprises a base, an upper die plate, a pushing assembly, a feeding part and a receiving part. The base is fixedly arranged on the main machine frame, and the lower die base is fixedly arranged on the base. The upper die plate is arranged on the upper side of the lower die base, a stamping die matched with the lower die base is arranged on the upper die plate, and a hydraulic oil cylinder used for driving the upper die plate to ascend and descend is fixedly arranged on the base. The pushing assembly is arranged on the lower die base and used for pushing a formed part punched on the lower die base. The feeding part is arranged on the side edge of the main machine frame. Through automatic feeding, precise stamping, automatic pushing and material receiving, the problems that in traditional electric power fitting production, efficiency is low, precision is poor, and operation safety is low are solved, efficient and high-precision continuous stamping forming is achieved, and the continuous stamping forming device is suitable for large-scale production requirements.

Description

Technical Field

[0001] This invention relates to the field of power fittings processing technology, and in particular to a cold forging and stamping forming equipment and forming method for power fittings. Background Technology

[0002] Power lines widely use metal fittings made of iron, aluminum, or aluminum alloys. The metal (iron, aluminum, or aluminum alloy) fittings used in the power distribution equipment of step-up and step-down substations for connections between equipment and conductors, conductors and wires, transmission line conductors themselves, and insulators connected in strings, as well as for the protection of conductors and insulators themselves, are called power fittings. Power fittings are mainly metal accessories that connect and combine various devices in the power system, serving to transmit mechanical loads, electrical loads, and provide certain protective functions.

[0003] Metal clamps are components used to hold or clamp another material with metal material. They are commonly used fasteners in electrical equipment. Metal clamps consist of metal clamp plates, bolts, and washers, and include cable clamps, pole clamps, guy wire clamps, and suspension wire clamps. The clamp plates of metal clamps are made by cutting metal strips into multiple equal-length metal pieces, and then stamping each piece.

[0004] Power fittings, as key metal components in power systems that bear mechanical load transmission, electrical connection, and equipment protection (such as clamps), widely employ cold forging and stamping technology in their manufacturing process. However, traditional stamping equipment suffers from the following problems in practical applications: low automation, relying on manual labor for feeding, positioning, stamping, and unloading metal strips, which is not only inefficient but also labor-intensive, making it difficult to meet the needs of large-scale production. Frequent manual intervention in the stamping area increases the risk of accidents due to equipment malfunction or operational errors. Furthermore, waste material easily accumulates in mold gaps or on the equipment's worktable, making cleaning difficult due to the complex equipment structure and numerous corners and crevices. Long-term accumulation not only pollutes the working environment but also increases the burden of subsequent cleaning. After the formed parts are removed from the forming tank, they often rely on gravity to slide down or manual handling, which can easily cause product deformation or surface scratches, affecting product quality and hindering subsequent storage and handling. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a cold forging stamping equipment and forming method for power fittings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A cold forging and stamping forming equipment for power fittings, comprising a main frame, characterized in that it further comprises: A base, which is fixed on the main frame, and a lower mold base is fixed on the base; The upper template is placed on the upper side of the lower mold base. The upper template is provided with a stamping die that cooperates with the lower mold base. The base is fixed with a hydraulic cylinder for driving the upper template to rise and fall. A pushing component is disposed on the lower die base and is used to push the stamped part on the lower die base; The feeding section is located on the side of the main frame and is used to feed metal strips onto the lower die base; The receiving section is located on the side of the main frame away from the pushing component.

[0007] Preferably, the top of the lower mold base is provided with a placement groove for placing metal strips, a forming groove for forming parts, and a recess for opening holes in the parts. The lower mold base and the base are provided with a waste groove communicating with the recess. The side of the lower mold base is provided with a discharge groove for removing the parts.

[0008] Preferably, the stamping die includes a pressure seat fixed to the lower side of the upper template, an arc-shaped pressure block disposed on the lower side of the pressure seat, punches fixed to the bottom of the pressure seat and distributed on both sides of the arc-shaped pressure block, and a cutter fixed to the side of the pressure seat.

[0009] Preferably, the punch is inserted into the concave hole, and the height of the bottom of the cutter is lower than the height of the bottom of the arc-shaped pressure block.

[0010] Preferably, a first elastic element is fixedly provided at the bottom of the upper template, and a pressure plate that moves against the metal strip is connected to the end of the first elastic element away from the upper template. When the first elastic element is not compressed, the bottom height of the pressure plate is lower than the bottom height of the cutter.

[0011] Preferably, the feeding section includes a sub-frame fixed to the side of the main frame, a loading platform fixed to the sub-frame, a side plate fixed to the sub-frame, two rotating rods rotatably connected to the side plate, a conveying roller and a driven gear disposed on each rotating rod, a one-way gear fixed to one of the rotating rods, and a rack plate fixed to the upper template and meshing with the one-way gear, wherein the driven gears on the two rotating rods are meshed and connected.

[0012] Preferably, the pushing component includes a pushing seat fixed on the base, a pushing plate slidably connected to the pushing seat, a first pull rope fixed between the pushing plate and the upper template, and a first guide fixed on the pushing seat and slidably disposed with the first pull rope. A second elastic element is provided between the end of the pushing plate and the pushing seat.

[0013] Preferably, the receiving part includes a U-shaped baffle fixed to the side of the lower mold base, a support frame fixed to both sides of the U-shaped baffle, a material carrier plate slidably connected to the support frame, a second pull rope disposed between the end of the material carrier plate and the upper mold plate, and a second guide member fixed to the U-shaped baffle and slidably disposed with the second pull rope. A third elastic element is disposed between the end of the material carrier plate and the support frame.

[0014] Preferably, the receiving part further includes a support plate fixed to the side of the main frame, a fixing rod fixed to the support plate, and a receiving frame inserted into the fixing rod. The receiving frame includes a base plate placed on the support plate, an insertion hole that cooperates with the fixing rod is opened on the base plate, and a positioning rod that cooperates with the punching hole of the formed part is fixed on the base plate.

[0015] This invention also discloses a cold forging and stamping method for power fittings, which involves processing the fittings using the aforementioned cold forging and stamping equipment, and includes the following steps: S1: Place the metal strip on the loading platform, so that its end passes between the two conveying rollers and extends into the placement groove of the lower die base, abutting against the inner wall of the placement groove; S2: Start the hydraulic cylinder to drive the upper template to move down. When the rack plate meshes with the one-way gear, the one-way gear rotates freely and the rotating rod does not move to avoid accidental feeding. Material positioning: As the upper template continues to move downward, the pressure plate presses the metal strip under the action of the first elastic element to prevent displacement; Cutting blanks: The cutter first contacts the metal strip and cuts it into a hoop blank; Forming and punching: The arc-shaped pressure block presses the blank into the forming groove to form a clamping curved surface; The punch is inserted into the concave hole and punches holes on both sides of the blank. The waste material is discharged through the waste trough. S3: Stamping upward stage (linked feeding, pushing and receiving): When the upper template rises, after the cutter leaves the lower die base, the rack plate drives the one-way gear to rotate, and through the meshing of the driven gear, it drives the two conveying rollers to rotate relative to each other, pushing the metal strip into the placement groove to prepare material for the next punching. When the upper template moves upward, after the cutter leaves the lower mold base, the push plate, under the action of the first pull rope, pushes the molded part to move horizontally along the discharge groove to the material carrier plate until it abuts against the inner wall of the U-shaped baffle. When the upper template moves downward again, the push plate is no longer pulled by the first pull rope and resets under the action of the elastic force of the second elastic element. The material carrier slides under the pull of the second pull rope to provide auxiliary support for the molded part. When the upper template moves down again, the second pull rope no longer applies tension to the material carrier and resets under the elastic force of the third elastic element. The material carriers on both sides no longer support the molded part. After losing support, the molded part falls horizontally, inserts into the positioning rod, and stacks on the bottom plate of the receiving rack. S4: Repeat the above process to achieve continuous stamping, automatic pushing and receiving. The formed parts are stacked vertically on the base plate of the receiving rack along the positioning rod to achieve automated stacking.

[0016] Compared with the prior art, the present invention provides a cold forging stamping forming equipment and forming method for power fittings, which has the following beneficial effects: 1. The cold forging stamping forming equipment and forming method for power fittings adopts an automatic feeding section to convey metal strips, push components and receiving section to achieve automatic unloading, and waste is discharged through a waste trough. The three processes are synchronized to reduce the production cycle time, which solves the problems of low efficiency, poor precision and low operation safety in the production of traditional power fittings (such as metal clamps). It realizes high-efficiency and high-precision continuous stamping forming, which is suitable for the needs of large-scale production. 2. The cold forging and stamping forming equipment and forming method for this power fitting utilizes a hydraulic cylinder to drive the stamping die downwards via an upper template. During the stamping process, the pressure plate first presses the metal strip, and the pressure seat moves downwards with the upper template. The cutter contacts the pressed metal strip to complete the cutting. Subsequently, the arc-shaped pressure block presses the blank into the forming groove, while the punch punches holes synchronously. The sequence of actions of each component is precisely controlled by the height difference and the uniform speed drive of the hydraulic cylinder. The hydraulic cylinder drives the entire process with a single power source, requiring no additional power source. This is energy-saving and reliable, enabling the fixing, cutting, and forming of the metal strip, thereby improving the processing efficiency of power fittings. 3. The cold forging and stamping equipment and forming method for the power fittings: When the upper die moves down, the rack plate drives the one-way gear to rotate. Due to the one-way characteristic, the one-way gear idles and does not drive the rotating rod when moving in the opposite direction. When the upper die moves up, after the cutter leaves the lower die base, the rack plate drives the one-way gear to rotate. Through the meshing of the driven gear, the two conveying rollers rotate relative to each other, pushing the metal strip into the placement groove to prepare for the next stamping. The automatic feeding of the power fittings is achieved by only relying on the extension and retraction of the hydraulic cylinder. 4. The cold forging and stamping equipment and forming method for this power fitting, when the upper template moves upward, after the cutter leaves the lower die base, the push plate, under the action of the first pull rope, pushes the formed part to move horizontally along the discharge groove for discharge. During this period, the carrier plate slides under the pull of the second pull rope to provide auxiliary support for the formed part and prevent the formed part pushed out by the push plate from falling off, until the formed part is completely removed from the die base. When the upper template moves downward again, the second pull rope no longer applies tension to the carrier plate and resets under the elastic force of the third elastic element. The carrier plates on both sides move away at the same time and no longer support the formed part. After losing support, the formed part falls horizontally, realizing automatic discharge and stacking of the formed part, reducing the difficulty of subsequent handling by the staff. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 For the present invention Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 This is a schematic diagram of the external structure of the rotating rod of the present invention; Figure 5 This is a schematic diagram of the external structure of the main frame of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram of section B; Figure 7 This is a schematic diagram of the receiving rack of the present invention; Figure 8 This is a cross-sectional structural diagram of the lower mold base of the present invention; Figure 9 This is a schematic diagram of the overall structure of the lower mold base of the present invention; Figure 10 This is a schematic diagram of the push component of the present invention; Figure 11 This is a cross-sectional structural diagram of the push component of the present invention.

[0018] In the diagram: 1. Main frame; 2. Base; 3. Lower die holder; 301. Placement slot; 302. Forming slot; 303. Concave hole; 304. Scrap trough; 305. Discharge trough; 4. Upper die plate; 401. Stamping die; 4011. Pressing seat; 4012. Arc-shaped pressing block; 4013. Punch; 4014. Cutting knife; 5. Hydraulic cylinder; 6. Formed part; 7. Loading section; 701. Sub-frame; 702. Carrying platform; 703. Side plate; 704. Rotating rod; 7041. Conveying roller; 7042. Driven gear; 705. One-way gear 706. Wheel; 8. Rack plate; 9. Metal strip; 10. Receiving part; 11. First elastic element; 1001. Pressure plate; 11. Push seat; 111. Push plate; 112. First pull rope; 113. First guide; 114. Second elastic element; 12. U-shaped baffle; 121. Support frame; 122. Carrying plate; 123. Second pull rope; 124. Second guide; 125. Third elastic element; 13. Support plate; 131. Fixing rod; 14. Receiving frame; 141. Base plate; 142. Insertion hole; 143. Positioning rod. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] like Figure 1 , Figure 2 , Figure 5 , Figure 8 and Figure 9 As shown, this embodiment proposes a cold forging and stamping forming equipment for power fittings, including a main frame 1, and further including: a base 2, an upper template 4, a pushing component, a feeding part 7, and a receiving part 9; the base 2 is fixed on the main frame 1, the main frame 1 serves as the main support structure of the equipment, the base 2 is fixed on the main frame 1, and the lower die base 3 is provided with a placement groove 301, a forming groove 302, a concave hole 303, a scrap groove 304, and a discharge groove 305, for positioning the metal strip 8, stamping and forming, scrap discharge, and discharge of the formed part 6; the upper... The template 4 is placed on the upper side of the lower mold base 3. The upper template 4 is provided with a stamping die 401 that cooperates with the lower mold base 3. The base 2 is fixed with a hydraulic cylinder 5 for driving the upper template 4 to rise and fall. The hydraulic cylinder 5 drives the stamping die 401 to perform stamping operations through the upper template 4. The pushing component is set on the lower mold base 3 for pushing the stamped part 6 on the lower mold base 3. The feeding part 7 is set on the side of the main frame 1 for conveying metal strips 8 to the lower mold base 3. The receiving part 9 is set on the side of the main frame 1 away from the pushing component. Specifically, the metal strip 8 is placed on the loading platform 702, with its end passing through the loading section 7 and extending into the placement groove 301 of the lower die base 3, abutting against the inner wall of the placement groove 301. Then, the hydraulic cylinder 5 is controlled to run, and the piston rod of the hydraulic cylinder 5 drives the upper template 4 to move down. The upper template 4 drives the stamping die 401 to cooperate with the lower die base 3 to cut and stamp the metal strip 8. The stamped waste is discharged from the waste groove 304 to avoid waste from being retained in the mold gap or worktable. Then, the pushing component pushes the stamped part 6 to the receiving section 9, so that the part 6 is automatically stacked and placed, realizing automated loading, automatic pushing and receiving. The three processes are synchronized to reduce the production cycle and reduce manual intervention, solving the problems of low efficiency, poor precision and low operation safety in the production of traditional power fittings such as metal clamps. It realizes efficient and high-precision continuous stamping forming, which is suitable for the needs of large-scale production.

[0023] like Figure 1 , Figure 2 , Figure 5 , Figure 8 and Figure 9 As shown, in a preferred embodiment, based on the above method, the stamping die 401 further includes a pressure seat 4011 fixed to the lower side of the upper template 4, an arc-shaped pressure block 4012 disposed on the lower side of the pressure seat 4011, a punch 4013 fixed to the bottom of the pressure seat 4011 and distributed on both sides of the arc-shaped pressure block 4012, and a cutter 4014 fixed to the side of the pressure seat 4011; the punch 4013 is inserted into the concave hole 303, and the bottom height of the cutter 4014 is lower than the bottom height of the arc-shaped pressure block 4012; the radius of curvature of the arc-shaped pressure block 4012 can be 5%-8% smaller than the theoretical value according to actual needs, so as to reduce the springback of the metal clamp (especially aluminum alloy) after cold forging and stamping. The pressure base 4011, serving as the base of the stamping die 401, is fixed to the lower side of the upper die plate 4, supporting the arc-shaped pressure block 4012, punch 4013, and cutter 4014. This ensures structural stability during collaborative operation of all components. Its rigid design can withstand high-frequency stamping loads, preventing deformation from affecting accuracy. The arc-shaped pressure block 4012, located below the pressure base 4011, is used to press the metal blank into the forming groove 302 of the lower die base 3. Its arc-shaped contour matches the bending shape of the clamping hardware, ensuring that the curvature of the formed part 6 meets design requirements. The punch 4013 is symmetrically distributed on both sides of the arc-shaped pressure block 4012, and is positioned opposite the lower die base. The recessed hole 303 of part 3 is inserted and fitted to complete the punching operation of the blank; the cutter 4014 is fixed on the side of the pressure seat 4011, and its height is designed to be lower than that of the arc-shaped pressure block 4012 to ensure that the cutting is completed before the stamping process. The cutting edge angle is 30°, which takes into account both sharpness and durability. During the stamping process, the pressure seat 4011 moves down with the upper template 4, and the cutter 4014 first contacts the metal strip 8 to complete the cutting. Then the arc-shaped pressure block 4012 presses the blank into the forming groove 302, and the punch 4013 punches at the same time. The sequence of action of each component is precisely controlled by the height difference and the uniform speed drive of the hydraulic cylinder 5.

[0024] like Figure 5 , Figure 6 and Figure 8 As shown, in a preferred embodiment, based on the above method, a first elastic element 10 is further fixed at the bottom of the upper template 4. The end of the first elastic element 10 away from the upper template 4 is connected to a pressure plate 1001 that moves against the metal strip 8. When the first elastic element 10 is not compressed, the bottom height of the pressure plate 1001 is lower than the bottom height of the cutter 4014. Hydraulic cylinder 5 drives upper template 4 to move downward, and pressure plate 1001 first presses metal strip 8. First elastic element 10 is compressed to 50%-70% of its stroke to provide stable pressing force. As upper template 4 continues to move downward, cutter 4014 contacts metal strip 8 to complete cutting. Elastic pressing prevents metal strip 8 from warping or shifting during cutting. After upper template 4 rises, first elastic element 10 rebounds and drives pressure plate 1001 to reset, preparing for the next stamping. It should be noted that under high-speed stamping (≥60 times / minute), springs must have a fatigue life of ≥500,000 cycles.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in a preferred embodiment, based on the above method, the feeding part 7 further includes a sub-frame 701 fixed to the side of the main frame 1, a loading platform 702 fixed to the sub-frame 701, a side plate 703 fixed to the sub-frame 701, two rotating rods 704 rotatably connected to the side plate 703, a conveying roller 7041 and a driven gear 7042 provided on each rotating rod 704, a one-way gear 705 fixed to one of the rotating rods 704, and a rack plate 706 fixed to the upper template 4 and meshing with the one-way gear 705. The driven gears 7042 on the two rotating rods 704 are meshed and connected. The sub-frame 701 serves as the support frame for the loading section 7, fixed to the side of the main frame 1, providing an installation base for the loading platform 702 and the side plate 703. Its rigid design ensures stability during the conveying process. The loading platform 702 is fixed on the sub-frame 701 and is used to place the coil or stack of metal strips 8. It is usually equipped with guide grooves or limit baffles to ensure that the metal strips 8 enter the conveyor roller 7041 along a predetermined path. The rotating rod 704 is rotatably connected to the side plate 703 via bearings. Each rotating rod 704 is equipped with a conveyor roller 7041. The rubber roller surface can be machined with anti-slip textures (such as diamond patterns) to increase friction. The one-way gear 705, as in the prior art, only allows the rotating rod 704 to rotate in one direction. To prevent retraction, it is equipped with a ratchet mechanism or a helical one-way clutch. When the upper template 4 moves down, the rack plate 706 carries... The driving one-way gear 705 rotates. Due to its one-way characteristic, the one-way gear 705 idles and does not drive the rotating rod 704 during reverse motion. When the upper template 4 rises, after the cutter 4014 leaves the lower die holder 3, the rack plate 706 drives the one-way gear 705 to rotate. Through the meshing of the driven gear 7042, the two conveying rollers 7041 rotate relative to each other, pushing the metal strip 8 into the placement groove 301 for the next stamping. The conveying length of the metal strip 8 is determined by the stroke of the rack plate 706. Different length rack plates 706 can be replaced or the stamping stroke can be adjusted to adapt to different blank sizes. A hydraulic buffer can be installed at the end of the rack plate 706 as needed to avoid the feeding length error between the one-way gear 705 and the rack plate 706 during high-speed movement. The hydraulic buffer is existing technology and will not be described in detail here.

[0026] like Figure 1 , Figure 2 , Figure 10 and Figure 11 As shown, in a preferred embodiment, based on the above method, the pushing component further includes a pushing seat 11 fixed on the base 2, a pushing plate 111 slidably connected to the pushing seat 11, a first pull rope 112 fixed between the pushing plate 111 and the upper template 4, and a first guide member 113 fixed on the pushing seat 11 and slidably disposed with the first pull rope 112. A second elastic element 114 is provided between the end of the pushing plate 111 and the pushing seat 11. Specifically, the pusher seat 11, as the fixed base of the component, is fixed to the base 2 by bolts or welding. It is usually made of cast iron or steel plate and has internal grooves or guide rails to form a sliding fit with the pusher plate 111 to ensure smooth movement without shaking. The first pull rope 112 is usually made of steel wire rope or high-strength nylon rope, and its length needs to be adjusted according to the stamping stroke. The first guide 113 is fixed on the pusher seat 11 and can be a pulley or a metal guide sleeve with a lubrication groove. It is used to constrain the movement path of the first pull rope 112, reduce rope wear, and keep the direction of tension stable. When the upper template 4 moves upward, after the cutter 4014 leaves the lower mold base 3, the pusher plate 111 pushes the formed part 6 to move horizontally along the discharge groove 305 for discharge under the action of the first pull rope 112. When the upper template 4 moves downward, the pusher plate 111 is no longer under the tension of the first pull rope 112 and resets under the elastic force of the second elastic element 114.

[0027] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment, based on the above method, the receiving part 9 further includes a U-shaped baffle 12 fixed to the side of the lower mold base 3, a support frame 121 fixed to both sides of the U-shaped baffle 12, a material carrier plate 122 slidably connected to the support frame 121, a second pull rope 123 disposed between the end of the material carrier plate 122 and the upper mold plate 4, and a second guide member 124 fixed to the U-shaped baffle 12 and slidably disposed with the second pull rope 123. A third elastic element 125 is disposed between the end of the material carrier plate 122 and the support frame 121. The U-shaped baffle 12 and the support frame 121 serve as the fixed base of the assembly, and are fixed to the lower die base 3 by bolts or welding. They are usually made of cast iron or steel plate. The support frame 121 has a sliding groove or guide rail inside, which forms a sliding fit with the material plate 122 to ensure smooth movement without shaking. The second pull rope 123 is usually made of steel wire rope or high-strength nylon rope, and its length needs to be adjusted according to the stamping stroke. The second guide 124 is fixed on the U-shaped baffle 12 and can be a pulley or a metal guide sleeve with a lubrication groove. It is used to constrain the movement path of the second pull rope 123, reduce rope wear, and keep the direction of tension stable. When the upper template 4 moves upward, after the cutter 4014 leaves the lower mold base 3, the push plate 111, under the action of the first pull rope 112, pushes the molded part 6 to move horizontally along the discharge groove 305 to the material carrier plate 122 until it abuts against the inner wall of the U-shaped baffle 12. During this period, the material carrier plate 122 slides under the pull of the second pull rope 123 to provide auxiliary support for the molded part 6. When the upper template 4 moves downward again, the second pull rope 123 no longer applies tension to the material carrier plate 122 and resets under the action of the elastic force of the third elastic element 125. The material carrier plates 122 on both sides no longer support the molded part 6, and the molded part 6 falls horizontally after losing support. It should be noted that, in order to automatically stack the falling molded parts 6, the receiving part 9 also includes a support plate 13 fixed to the side of the main frame 1, a fixing rod 131 fixed to the support plate 13, and a receiving rack 14 inserted into the fixing rod 131. The receiving rack 14 includes a base plate 141 placed on the support plate 13. The base plate 141 has an insertion hole 142 that mates with the fixing rod 131. The base plate 141 is fixed with a positioning rod 143 that mates with the punching hole of the molded part 6. When the pushing component pushes the molded part 6 to abut against the inner wall of the U-shaped baffle 12, the punching hole of the molded part 6 is directly above the positioning rod 143. When the material carrier plates on both sides of the U-shaped baffle 12... After the parts 122 move away from each other and no longer support the molded part 6, the molded part 6 falls horizontally and the punch is inserted into the positioning rod 143. It should be noted that the end of the positioning rod 143 should be tapered so that the punch of the molded part 6 can fall smoothly onto the positioning rod 143. When the receiving rack 14 has received enough molded parts 6, the worker lifts the receiving rack 14 to separate it from the fixing rod 131. The worker replaces the receiving rack 14 with a new one to stack the molded parts 6. This eliminates the need for the molded parts 6 to fall and mix using an inclined plane or manual picking, avoiding deformation or damage to the molded parts 6. The positioning and stacking of the receiving rack 14 can avoid secondary sorting and ensure the efficiency and quality of hardware processing.

[0028] This invention also discloses a cold forging and stamping method for power fittings, which involves processing the fittings using the aforementioned cold forging and stamping equipment, and includes the following steps: S1: Place the metal strip 8 on the material carrier 702, so that its end passes between the two conveying rollers 7041 and extends into the placement groove 301 of the lower mold base 3, and abuts against the inner wall of the placement groove 301. S2: Start the hydraulic cylinder 5 to drive the upper template 4 to move down. When the rack plate 706 meshes with the one-way gear 705, the one-way gear 705 rotates freely and the rotating rod 704 does not move to avoid accidental feeding. Material positioning: The upper template 4 continues to move downward, and the pressure plate 1001 presses the metal strip 8 under the action of the first elastic element 10 to prevent displacement; Cutting blanks: The cutter 4014 first contacts the metal strip 8 and cuts it into a hoop blank; Forming and punching: The arc-shaped pressure block 4012 presses the blank into the forming groove 302 to form a clamping curved surface; Punch 4013 is inserted into concave hole 303 and punches holes on both sides of blank, and waste is discharged through waste trough 304; S3: Stamping upward stage (linked feeding, pushing and receiving): When the upper template 4 rises, after the cutter 4014 leaves the lower mold base 3, the rack plate 706 drives the one-way gear 705 to rotate, and through the meshing of the driven gear 7042, it drives the two conveying rollers 7041 to rotate relative to each other, pushing the metal strip 8 into the placement groove 301 to prepare material for the next punching. When the upper template 4 moves upward, after the cutter 4014 leaves the lower mold base 3, the push plate 111, under the action of the first pull rope 112, pushes the molded part 6 to move horizontally along the discharge groove 305 to the material carrier plate 122 until it abuts against the inner side wall of the U-shaped baffle 12. When the upper template 4 moves downward again, the push plate 111 is no longer pulled by the first pull rope 112 and resets under the action of the elastic force of the second elastic element 114. The material carrier plate 122 slides under the pull of the second pull rope 123 to provide auxiliary support for the molded part 6. When the upper template 4 moves down again, the second pull rope 123 no longer applies tension to the material carrier plate 122 and resets under the elastic force of the third elastic element 125. The material carrier plates 122 on both sides no longer support the molded part 6. After losing support, the molded part 6 falls horizontally, inserts into the positioning rod 143, and stacks on the bottom plate 141 of the receiving rack 14. S4: Repeat the above process to achieve continuous stamping, automatic pushing and receiving. The formed parts 6 are stacked vertically on the base plate 141 of the receiving rack 14 along the positioning rod 143 to achieve automated stacking.

[0029] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cold forging and stamping forming equipment for power fittings, comprising a main frame (1), characterized in that, Also includes: The base (2) is fixed on the main frame (1), and the lower mold base (3) is fixed on the base (2). The upper template (4) is placed on the upper side of the lower mold base (3). The upper template (4) is provided with a stamping die (401) that cooperates with the lower mold base (3). The base (2) is fixed with a hydraulic cylinder (5) for driving the upper template (4) to rise and fall. Pushing component, which is disposed on the lower die base (3) and is used to push the stamped part (6) on the lower die base (3). The feeding section (7) is located on the side of the main frame (1) and is used to feed metal strips (8) onto the lower mold base (3). The receiving part (9) is located on the side of the main frame (1) away from the pushing component.

2. The cold forging and stamping equipment for power fittings according to claim 1, characterized in that, The lower mold base (3) has a placement groove (301) for placing metal strips (8), a forming groove (302) for forming the molded part (6), and a recess (303) for opening holes in the molded part (6) on its top. The lower mold base (3) and the base (2) have a waste groove (304) connected to the recess (303). The lower mold base (3) has a discharge groove (305) for removing the molded part (6) on its side.

3. The cold forging and stamping equipment for power fittings according to claim 2, characterized in that, The stamping die (401) includes a pressure seat (4011) fixed on the lower side of the upper template (4), an arc-shaped pressure block (4012) set on the lower side of the pressure seat (4011), punches (4013) fixed on the bottom of the pressure seat (4011) and distributed on both sides of the arc-shaped pressure block (4012), and a cutter (4014) fixed on the side of the pressure seat (4011).

4. The cold forging and stamping equipment for power fittings according to claim 3, characterized in that, The punch (4013) is inserted into the concave hole (303), and the bottom of the cutter (4014) is lower than the bottom of the arc-shaped pressure block (4012).

5. The cold forging and stamping equipment for power fittings according to claim 4, characterized in that, The bottom of the upper template (4) is fixed with a first elastic element (10). The end of the first elastic element (10) away from the upper template (4) is connected to a pressure plate (1001) that moves against the metal strip (8). When the first elastic element (10) is not compressed, the bottom height of the pressure plate (1001) is lower than the bottom height of the cutter (4014).

6. The cold forging and stamping equipment for power fittings according to claim 5, characterized in that, The loading section (7) includes a sub-frame (701) fixed to the side of the main frame (1), a loading platform (702) fixed to the sub-frame (701), a side plate (703) fixed to the sub-frame (701), two rotating rods (704) rotatably connected to the side plate (703), a conveying roller (7041) and a driven gear (7042) set on each rotating rod (704), a one-way gear (705) fixed on one of the rotating rods (704), and a rack plate (706) fixed on the upper template (4) and meshing with the one-way gear (705). The driven gears (7042) on the two rotating rods (704) are meshed together.

7. The cold forging and stamping equipment for power fittings according to claim 6, characterized in that, The pushing assembly includes a pushing seat (11) fixed on the base (2), a pushing plate (111) slidably connected to the pushing seat (11), a first pull rope (112) fixed between the pushing plate (111) and the upper template (4), and a first guide (113) fixed on the pushing seat (11) and slidably connected to the first pull rope (112). A second elastic element (114) is provided between the end of the pushing plate (111) and the pushing seat (11).

8. The cold forging and stamping equipment for power fittings according to claim 7, characterized in that, The receiving part (9) includes a U-shaped baffle (12) fixed on the side of the lower mold base (3), a support frame (121) fixed on both sides of the U-shaped baffle (12), a material carrier plate (122) slidably connected to the support frame (121), a second pull rope (123) disposed between the end of the material carrier plate (122) and the upper template (4), and a second guide member (124) fixed on the U-shaped baffle (12) and slidably disposed with the second pull rope (123). A third elastic element (125) is disposed between the end of the material carrier plate (122) and the support frame (121).

9. The cold forging and stamping equipment for power fittings according to claim 8, characterized in that, The receiving part (9) also includes a support plate (13) fixed on the side of the main frame (1), a fixing rod (131) fixed on the support plate (13), and a receiving rack (14) inserted into the fixing rod (131). The receiving rack (14) includes a base plate (141) placed on the support plate (13). The base plate (141) has an insertion hole (142) that cooperates with the fixing rod (131). The base plate (141) has a positioning rod (143) that cooperates with the punching hole of the molded part (6).

10. A cold forging and stamping method for power fittings, wherein the power fittings are processed using the cold forging and stamping equipment described in claim 9, characterized in that, Includes the following steps: S1: Place the metal strip (8) on the loading platform (702) so that its end passes between the two conveying rollers (7041) and extends into the placement groove (301) of the lower die holder (3) and abuts against the inner wall of the placement groove (301); S2: Start the hydraulic cylinder (5) to drive the upper template (4) to move down. When the rack plate (706) meshes with the one-way gear (705), the one-way gear (705) rotates freely and the rotating rod (704) does not move, thus avoiding accidental feeding. Material positioning: The upper template (4) continues to move down, and the pressure plate (1001) presses the metal strip (8) under the action of the first elastic element (10) to prevent displacement; Cutting blanks: The cutter (4014) first contacts the metal strip (8) and cuts it into a hoop blank; Forming and punching: The arc-shaped pressure block (4012) presses the blank into the forming groove (302) to form a clamping curved surface; The punch (4013) is inserted into the concave hole (303) to punch holes on both sides of the blank, and the waste is discharged through the waste trough (304); S3: Stamping upward stage (linked feeding, pushing and receiving): When the upper template (4) rises, after the cutter (4014) leaves the lower mold base (3), the rack plate (706) drives the one-way gear (705) to rotate, and through the meshing of the driven gear (7042), it drives the two conveying rollers (7041) to rotate relative to each other, pushing the metal strip (8) into the placement groove (301) to prepare material for the next punching; When the upper template (4) moves upward, after the cutter (4014) leaves the lower mold base (3), the push plate (111) pushes the molded part (6) to move horizontally along the discharge groove (305) to the material carrier plate (122) under the action of the first pull rope (112) until it abuts against the inner wall of the U-shaped baffle (12). When the upper template (4) moves downward again, the push plate (111) is no longer pulled by the first pull rope (112) and resets under the action of the elastic force of the second elastic element (114). The material carrier plate (122) slides under the pull of the second pull rope (123) to provide auxiliary support for the molded part (6). When the upper template (4) moves down again, the second pull rope (123) no longer applies tension to the material carrier plate (122) and resets under the elastic force of the third elastic element (125). The material carrier plates (122) on both sides no longer support the molded part (6). After losing support, the molded part (6) falls horizontally and is inserted into the positioning rod (143) and stacked on the bottom plate (141) of the receiving rack (14). S4: Repeat the above process to achieve continuous stamping, automatic pushing and receiving. The formed parts (6) are stacked vertically on the base plate (141) of the receiving rack (14) along the positioning rod (143) to achieve automated stacking.

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