A cold heading forming device for guardrail fastening connectors

Abstract

This disclosure relates to the technical field of guardrail fastener processing equipment. One embodiment of this disclosure provides a cold heading forming device for guardrail fasteners, comprising: an equipment base and a forming frame, the forming frame being fixed to the surface of the equipment base, a feeding frame being fixed to the surface of the equipment base, a feeding forming assembly being disposed on the feeding frame and the forming frame, and a stamping and cutting assembly being disposed on the surface of the forming frame and the equipment base. The feeding forming assembly includes a plurality of feeding rollers, all of which are rotatably connected within the feeding frame. Two pairs of conveying rollers are disposed within the feeding frame, one end of each pair of conveying rollers being provided with a transmission gear, and one of the conveying rollers being electrically driven to rotate. A main frame is disposed on the surface of the equipment base. This technical solution solves the technical problem in the prior art where sequential feeding leads to an increased idle time ratio in the device, a limited supply of blanks per unit time, and difficulty in matching the high-speed processing capability of the cold heading forming main unit, thus restricting the overall production line's capacity improvement.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of guardrail fastener processing equipment, specifically, to a cold forging device for guardrail fastener connectors. Background Technology

[0002] In guardrail construction, fasteners are key components ensuring the stability of the guardrail structure. Their forming quality and production efficiency directly affect project progress and construction safety. Guardrail fasteners are mostly manufactured using metal materials through cold heading forming. This process, with its advantages of low energy consumption, high material utilization, and excellent mechanical properties, is widely used in the mass production of such parts.

[0003] Currently, most cold heading forming equipment used in the industry adopts a sequential feeding mode in the billet unloading stage, that is, the billet is pushed to the forming station one by one by a single feeding mechanism. This method has significant drawbacks in terms of inefficiency: on the one hand, sequential feeding increases the idle time of the equipment, and the billet supply per unit time is limited, making it difficult to match the high-speed processing capacity of the cold heading forming machine, thus restricting the overall production line capacity improvement; on the other hand, frequent single feeding actions will aggravate the wear of the feeding mechanism, increase the maintenance frequency and cost of the equipment, and due to the lack of coordination between the feeding rhythm and the forming rhythm, the billet supply is prone to interruption or accumulation, affecting the stability of product forming quality.

[0004] Therefore, in order to address the problem of low material feeding efficiency in existing cold heading forming equipment, the development of a cold heading forming device for guardrail fasteners that can achieve continuous and efficient material feeding has become an urgent need for the industry to improve production efficiency and economic benefits. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a cold heading forming device for guardrail fastening connectors, which solves the technical problem in the prior art that the idle time of the device increases due to the individual feeding process, the amount of blank supplied per unit time is limited, it is difficult to match the high-speed processing capability of the cold heading forming host, and the overall production line capacity improvement is restricted.

[0006] According to one aspect, at least one embodiment of the present disclosure provides a cold heading forming apparatus for guardrail fastening connectors, comprising:

[0007] The equipment base and the forming frame are fixed to the surface of the equipment base;

[0008] The feeding rack and the feeding forming assembly are provided, wherein the feeding rack is fixed to the surface of the equipment base and the feeding forming assembly is disposed on the feeding rack and the forming rack;

[0009] A stamping and cutting assembly is disposed on the surfaces of the forming frame and the equipment base;

[0010] The feeding and forming assembly includes several feeding rollers, all of which are rotatably connected to the feeding frame. The feeding frame is provided with two pairs of conveying rollers, one of which is provided with a transmission gear at one end. One of the conveying rollers is driven to rotate by electricity. The surface of the equipment base is provided with a main frame.

[0011] As a further technical solution, a U-shaped inner frame is provided inside the main frame, and a support plate is fixed at the bottom of the main frame. The support plate is located directly below the U-shaped inner frame, and inclined bending rollers are provided at both ends of the main frame.

[0012] As a further technical solution, a pair of forming rollers are provided on both sides of the entrance end of the forming frame, and the pair of forming rollers are respectively located on the inner and outer sides of the entrance end of the forming frame.

[0013] As a further technical solution, the stamping and cutting assembly includes a compaction mold, which is connected by a vertical linear drive. The compaction mold is located directly above the forming part of the forming frame, and an inner cavity is formed inside the compaction mold.

[0014] As a further technical solution, the bottom surface of the inner cavity is provided with several through holes, a punching die connected by vertical linear drive is provided in the inner cavity, and a guide frame is provided on the surface of the equipment base.

[0015] As a further technical solution, the guide frame is provided with a movable seat connected by linear movement. The movable seat is equipped with a cutting motor and a cutting saw blade. The top of the equipment base is provided with a support frame, which is positioned corresponding to the forming frame. The cutting saw blade is located inside the support frame and between the forming frame.

[0016] As a further technical solution, one end of the equipment base is an inclined structural surface, and a discharge chute is provided on the inclined surface of the equipment base.

[0017] As a further technical solution, the surfaces of the conveying rollers are all anti-slip structural surfaces with high friction.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] In this disclosure, the feeding and forming assembly solves the problem of low efficiency in traditional piecewise feeding through continuous conveying and step-by-step forming design. The feeding roller and conveying roller work together to achieve stable feeding of the sheet metal, while the inclined bending roller and U-shaped inner frame complete the bending and forming in stages. The forming roller precisely shapes the sheet metal, ensuring consistent dimensions of the U-shaped structure. The continuous operation mode matches the high-speed processing capability of the cold heading machine, reducing idle time, increasing unit time output, while also reducing equipment wear, reducing maintenance costs, and ensuring production continuity. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0022] Figure 2 This is an isometric drawing of the present disclosure;

[0023] Figure 3 This is a cross-sectional view of the present disclosure;

[0024] In the diagram: 1. Equipment base; 2. Forming frame; 3. Feeding frame; 4. Feeding and forming assembly; 4-1. Feeding roller; 4-2. Conveying roller; 4-3. Transmission gear; 4-4. Main frame; 4-5. U-shaped inner frame; 4-6. Support plate; 4-7. Inclined bending roller; 4-8. Forming roller; 5. Stamping and cutting assembly; 5-1. Compacting mold; 5-2. Inner cavity; 5-3. Perforation; 5-4. Punching mold; 5-5. Guide frame; 5-6. Moving seat; 5-7. Cutting motor; 5-8. Cutting saw blade; 5-9. Support frame; 6. Discharge chute. Detailed Implementation

[0025] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0028] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] like Figures 1-3 As shown, it illustrates a cold heading forming apparatus for guardrail fastening connectors according to an embodiment of the present disclosure, comprising:

[0032] The equipment base 1 and the forming frame 2 are fixed to the surface of the equipment base 1;

[0033] The feeding rack 3 and the feeding forming assembly 4 are provided. The feeding rack 3 is fixed to the surface of the equipment base 1, and the feeding forming assembly 4 is disposed on the feeding rack 3 and the forming rack 2.

[0034] A stamping and cutting assembly 5 is disposed on the surfaces of the forming frame 2 and the equipment base 1;

[0035] The feeding and forming assembly 4 includes several feeding rollers 4-1, all of which are rotatably connected to the feeding frame 3. The feeding frame 3 is provided with two pairs of conveying rollers 4-2, one end of each pair of conveying rollers 4-2 is provided with a transmission gear 4-3, and one of the conveying rollers 4-2 is driven to rotate by electricity. The surface of the equipment base 1 is provided with a main frame 4-4, and a U-shaped inner frame 4-5 is provided inside the main frame 4-4. A support plate 4-6 is fixed at the bottom inside the main frame 4-4, and the support plate 4-6 is located directly below the U-shaped inner frame 4-5. Inclined bending rollers 4-7 are provided at both ends inside the main frame 4-4. A pair of forming rollers 4-8 are provided on both sides of the entrance end of the forming frame 2, and the pair of forming rollers 4-8 are located on the inner and outer sides of the entrance end of the forming frame 2, respectively.

[0036] In some examples, to achieve continuous conveying and U-shaped forming of the sheet material, a feeding and forming assembly 4 is designed. This assembly includes feeding rollers 4-1 within the feeding frame 3, which are rotatably connected by bearings and distributed parallel to each other along the feeding direction. The roller surfaces have annular grooves to guide the sheet material in a straight line. Two pairs of conveying rollers 4-2 within the feeding frame 3 are symmetrically distributed vertically and are rotatably connected by bearings. The transmission gears 4-3 at one end of one pair of conveying rollers 4-2 mesh with each other. The conveying roller 4-2 closest to the outlet of the feeding frame 3 is connected to the motor output end via a coupling.

[0037] The main frame 4-4 on the surface of the equipment base 1 is fixed by welding, and the internal U-shaped inner frame 4-5 is fixed by welding, forming a U-shaped structure that fits the inner wall of the main frame 4-4. The support plate 4-6 at the bottom of the main frame 4-4 is horizontally welded, and its upper surface fits the bottom arc of the U-shaped inner frame 4-5. The inclined bending rollers 4-7 at both ends of the main frame 4-4 are rotatably connected by pins. The roller axis is perpendicular to the feeding direction and is symmetrically inclined. A pair of forming rollers 4-8 at the inlet end of the forming frame 2 are rotatably connected by bearings. The inner forming roller 4-8 is located inside the forming frame 2, and the outer forming roller 4-8 is located outside the inlet end. The forming groove on the surface of the roller is adapted to the U-shaped structure.

[0038] During operation, the sheet material passes through the feed rollers 4-1 and enters the conveyor rollers 4-2 under the guidance of the grooves. The motor drives the conveyor rollers 4-2 to rotate, which in turn drives another conveyor roller 4-2 to rotate synchronously through the meshing of the transmission gear 4-3, clamping and conveying the sheet material forward. The sheet material first passes through the inclined bending rollers 4-7, where the two sides are initially bent upward under the action of the symmetrically inclined rollers. Then it enters the main frame 4-4, where the U-shaped inner frame 4-5 cooperates with the support plate 4-6 to press the sheet material into a U-shaped structure. Finally, it passes through the forming rollers 4-8 at the entrance end of the forming frame 2. The inner and outer forming rollers 4-8 further roll and shape the U-shaped edges from both the inner and outer sides to ensure dimensional accuracy.

[0039] The continuous drive of the feed roller 4-1 and the conveying roller 4-2 ensures stable conveying of the sheet metal. The inclined bending roller 4-7 completes the initial bending, the U-shaped inner frame 4-5 and the support plate 4-6 form a U-shaped reference, and the forming roller 4-8 performs the final shaping. This component, through the combination of multi-stage roller bending and continuous conveying, gradually processes the sheet metal into U-shaped fasteners, ensuring consistent forming and continuous conveying.

[0040] like Figures 1-3 As shown in the figure, the stamping and cutting assembly 5 in this embodiment includes a compaction mold 5-1, which is connected by a vertical linear drive. The compaction mold 5-1 is located directly above the forming part of the forming frame 2. The compaction mold 5-1 has an inner cavity 5-2 inside. The bottom surface of the inner cavity 5-2 has several through holes 5-3. A punching mold 5-4 connected by a vertical linear drive is provided in the inner cavity 5-2. A guide frame 5-5 is provided on the surface of the equipment base 1. A movable seat 5-6 connected by a linear movement is provided in the guide frame 5-5. A cutting motor 5-7 and a cutting saw blade 5-8 are installed on the movable seat 5-6. A support frame 5-9 is provided on the top of the equipment base 1. The support frame 5-9 is positioned opposite to the forming frame 2. The cutting saw blade 5-8 is located inside the support frame 5-9 and between the forming frame 2.

[0041] In some examples, a stamping and cutting assembly 5 is designed to achieve fastener forming, punching, and fixed-length cutting. This assembly includes a compaction mold 5-1 above the forming frame 2 connected by a vertical linear drive device (such as a hydraulic cylinder). The cylinder body is fixed to the top of the forming frame 2, and its output end is connected to the top of the mold. The forming surface at the bottom of the mold is adapted to the U-shaped fastener. The internal cavity 5-2 is opened vertically, and the perforation 5-3 on the bottom surface corresponds to the hole position of the fastener. The punching mold 5-4 in the internal cavity 5-2 is connected by another vertical linear drive device and can slide up and down along the internal cavity 5-2. The punch is coaxial with the perforation 5-3. The guide frame 5-5 on the surface of the equipment base 1 is fixed by bolts, and the internal moving seat 5-6 is slidably connected by a slide rail and driven by a lead screw to move horizontally. The cutting motor 5-7 on the moving seat 5-6 is fixed by bolts, and its output end is connected to the cutting saw blade 5-8. The axis of the saw blade is perpendicular to the feeding direction. The support frame 5-9 on the top of the equipment base 1 is welded and fixed, located at the outlet end of the forming frame 2, and its upper surface is in contact with the bottom of the U-shaped fastener.

[0042] During operation, the U-shaped fastener is conveyed to the forming section of the forming frame 2. The compaction die 5-1 moves downwards under the drive of the driving device, pressing the fastener firmly onto the forming frame 2 to complete the final forming. Subsequently, the punching die 5-4 moves downwards, and the punch passes through the through-hole 5-3 to punch an installation hole in the fastener. After punching, the die returns to its original position. The formed fastener continues to be conveyed above the support frame 5-9. The moving seat 5-6 moves along the guide frame 5-5 under the drive of the lead screw. The cutting motor 5-7 drives the saw blade to rotate, cutting the fastener to the set length. The compaction die 5-1 ensures stable positioning of the fastener during stamping, the through-hole 5-3 guides precise punching, the moving seat 5-6 cooperates with the saw blade to achieve fixed-length cutting, and the support frame 5-9 prevents deformation of the fastener during cutting. This component completes the final processing of the fastener through the coordinated operation of stamping, punching, and cutting, ensuring dimensional accuracy and a smooth cut.

[0043] For example, such as Figure 1 As shown, one end of the equipment base 1 is an inclined structural surface, and a discharge groove 6 is provided on the inclined surface of the equipment base 1.

[0044] In some examples, the inclined structural surface and discharge chute 6 at one end of the device base 1 guide the smooth discharge of the formed fasteners. The inclined surface forms an angle with the horizontal plane; the cut fasteners slide along the inclined surface into the discharge chute 6 under gravity. The chute then collects and transports the fasteners to the collection area, preventing them from scattering. This design reduces manual collection, improves discharge efficiency, and the combination of the inclined angle and the chute allows for control of the discharge speed, preventing accumulation.

[0045] For example, such as Figure 1 As shown, the surfaces of the conveying rollers 4-2 are all anti-slip structural surfaces with high friction.

[0046] In some examples, the anti-slip structure on the surface of the conveyor roller 4-2 enhances friction with the sheet material. The anti-slip design ensures that the conveyor roller 4-2 can stably clamp the sheet material, preventing slippage during conveying or bending, ensuring uniform sheet material feed speed, and preventing dimensional deviations caused by slippage. Simultaneously, the anti-slip structure can adapt to sheets of different thicknesses, improving the stability and reliability of the conveying process.

[0047] In actual use: The sheet material is guided into the conveyor roller 4-2 by the feed roller 4-1. The transmission gear 4-3 drives the conveyor roller 4-2 to continuously convey the sheet material, which is first initially bent on both sides by the inclined bending roller 4-7, and then enters the main frame 4-4. The U-shaped inner frame 4-5 cooperates with the support plate 4-6 to press the sheet material into a U-shape. The forming roller 4-8 at the entrance of the forming frame 2 further shapes the material from both the inside and outside. Subsequently, the U-shaped part is conveyed to the forming frame 2, and the compaction mold 5-1 presses down to complete the final forming. The punching mold 5-4 punches out the mounting hole through the through hole 5-3. The moving seat 5-6 drives the cutting saw blade 5-8 to cut the formed part into a fixed length. The finished product slides out through the discharge chute 6. The entire process is continuous and does not require interruption of feeding.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A cold heading forming device for a guardrail fastening connector, characterized by, include: Equipment base (1) and forming frame (2), wherein the forming frame (2) is fixed to the surface of the equipment base (1); The feeding rack (3) and the feeding forming assembly (4) are provided. The feeding rack (3) is fixed on the surface of the equipment base (1), and the feeding forming assembly (4) is provided on the feeding rack (3) and the forming rack (2). A stamping and cutting assembly (5) is disposed on the surfaces of the forming frame (2) and the equipment base (1); The feeding and forming assembly (4) includes several feeding rollers (4-1), all of which are rotatably connected to the feeding frame (3). The feeding frame (3) is provided with two pairs of conveying rollers (4-2), one end of each pair of conveying rollers (4-2) is provided with a transmission gear (4-3), and one of the conveying rollers (4-2) is driven to rotate by electricity. The surface of the equipment base (1) is provided with a main frame (4-4).

2. A cold heading forming device for guardrail fastening connectors according to claim 1, characterized in that, The main frame (4-4) is provided with a U-shaped inner frame (4-5), and a support plate (4-6) is fixed at the bottom of the main frame (4-4). The support plate (4-6) is located directly below the U-shaped inner frame (4-5). Inclined bending rollers (4-7) are provided at both ends of the main frame (4-4).

3. A cold heading apparatus for forming a fastening connector for a guardrail according to claim 2, wherein A pair of forming rollers (4-8) are provided on both sides of the entrance end of the forming frame (2), and the pair of forming rollers (4-8) are located on the inner and outer sides of the entrance end of the forming frame (2), respectively.

4. A cold heading apparatus for forming a fastening connector for a guardrail according to claim 1, wherein The stamping and cutting assembly (5) includes a compaction mold (5-1), which is connected by a vertical linear drive. The compaction mold (5-1) is located directly above the forming part of the forming frame (2), and an inner cavity (5-2) is provided inside the compaction mold (5-1).

5. A cold heading apparatus for forming a fastening connector for a guardrail according to claim 4, wherein The inner cavity (5-2) has several through holes (5-3) on its bottom surface. A punching die (5-4) connected by a vertical linear drive is provided in the inner cavity (5-2). A guide frame (5-5) is provided on the surface of the equipment base (1).

6. A cold heading forming device for guardrail fastening connectors according to claim 5, characterized in that, The guide frame (5-5) is provided with a movable seat (5-6) connected by linear movement. The movable seat (5-6) is equipped with a cutting motor (5-7) and a cutting saw blade (5-8). The top of the equipment base (1) is provided with a support frame (5-9). The support frame (5-9) is positioned opposite to the forming frame (2). The cutting saw blade (5-8) is located inside the support frame (5-9) and between the forming frame (2).

7. A cold heading forming device for guardrail fastening connectors according to claim 1, characterized in that, One end of the equipment base (1) is an inclined structural surface, and a discharge chute (6) is provided on the inclined surface of the equipment base (1).

8. A cold heading forming device for guardrail fastening connectors according to claim 1, characterized in that, The surfaces of the conveying rollers (4-2) are all anti-slip structural surfaces with high friction.

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