A guide structure of a guardrail plate bending machine

Abstract

The utility model belongs to the technical field of guardrail plate bending machine, concretely relates to a guide structure of guardrail plate bending machine, including support bottom, the upper end fixedly connected with fixed block of support bottom, the upper end fixedly connected with mounting seat of support bottom, the inside slide coupling of mounting seat has the rack, the lower end fixedly connected with the connecting seat of rack. The utility model innovatively configures the roof, slide rod and spring cooperation component, and the slide rod is driven linkage roof with the help of the spring elasticity force, realizes the flexible guide and accurate center positioning to work piece. The structure effectively solves the problem that the traditional bending machine guide function is absent, ensures that work piece always keeps stable posture in the bending process through the elastic limit, fundamentally avoids the dimensional deviation caused by the deviation shaking, significantly improves the accuracy and consistency of guardrail plate bending length, radian and other key parameters, guarantees the standardization processing quality of finished product.

Description

Technical Field

[0001] This utility model relates to the technical field of guardrail bending machines, specifically a guide structure for a guardrail bending machine. Background Technology

[0002] Guardrail bending machines are key equipment used in processing guardrails for highways, bridges, and other traffic facilities. They are primarily used to bend metal sheets (such as galvanized steel sheets) to specific arcs or angles to meet the installation and usage requirements of guardrails. This equipment is widely used in the traffic engineering field, efficiently and accurately completing guardrail bending operations to ensure the strength, stability, and aesthetics of the guardrails. During operation, the metal sheet is fed into the machine, and pressure is applied through a mechanical or hydraulic system, bending it according to a preset mold shape to ultimately form a standard guardrail panel. Modern guardrail bending machines typically have a high degree of automation, adapting to the production needs of guardrails of different specifications and models, improving production efficiency and reducing labor costs. Their processing accuracy directly affects the installation effect and safety of the guardrails, thus holding an important position in the traffic facility manufacturing industry. Furthermore, the application of guardrail bending machines is not limited to highways; they can also be used for guardrail production in urban roads, railways, airports, and other locations, demonstrating wide applicability. With the continuous development of traffic infrastructure construction, the market demand for guardrail bending machines continues to grow, and the technology is constantly being optimized to meet more efficient and precise production requirements.

[0003] If a guardrail bending machine lacks an effective workpiece guiding device, the guardrail panel positioning may be unstable during processing. In this case, the workpiece is prone to shifting or wobbling during bending, directly leading to a decrease in the dimensional accuracy of the finished product. This manifests as inconsistent guardrail panel lengths and curvature deviations, affecting the standardization and installation adaptability of the product and reducing the overall processing quality. Summary of the Invention

[0004] The purpose of this utility model is to provide a guide structure for a guardrail bending machine, which solves the problem that the guardrail bending machine is inconvenient to guide the workpiece, which easily causes the workpiece to be unstable in position during bending, resulting in differences in the length, curvature and other dimensions of the bent guardrail.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a guide structure for a guardrail bending machine, comprising a support base, a fixing block fixedly connected to the upper end of the support base, a mounting base fixedly connected to the upper end of the support base, a rack slidably connected inside the mounting base, a connecting seat fixedly connected to the lower end of the rack, a pressure block fixedly connected to the lower end of the connecting seat, a wheel frame fixedly connected to the outer side of the connecting seat, a wheel rotatably connected inside the wheel frame, and a guide mechanism provided on the mounting base.

[0006] Preferably, a guide rail is fixedly connected to the inner wall of the mounting base, and a wheel is slidably connected inside the guide rail. Through the sliding cooperation between the guide rail and the wheel, the rack is provided with precise horizontal guidance, which restricts the rack to move only along the preset trajectory. This avoids rack deviation or shaking during bending, which would cause guiding deviation and significantly improves the positioning accuracy and processing consistency of the guardrail bending.

[0007] Preferably, a connecting block is fixedly connected to the back of the rack, the connecting block is slidably connected to the mounting base, a guide groove is provided inside the connecting block, a fixing frame is fixedly connected to the upper end of the mounting base, a guide block is fixedly connected inside the fixing frame, and the guide block is slidably connected to the guide groove. The cooperative structure of the connecting block, the guide groove and the guide block forms a double guiding constraint (horizontal and vertical directions), which further restricts the movement trajectory of the rack, prevents it from tilting or deflecting when bent, ensures that the pressing force of the pressure block on the guardrail is uniform and stable, and avoids deformation of the plate or bending angle error due to guide failure.

[0008] Preferably, a bearing seat is fixedly connected to the upper end of the mounting base, and a motor is fixedly installed on the right side of the bearing seat. The output end of the motor is rotatably connected to the bearing seat, and a gear is fixedly connected to the output end of the motor. The gear meshes with a rack, and the rotational motion is converted into the precise linear motion of the rack by the motor driving the gear and rack to achieve automated and adjustable pressing of the pressure block on the guardrail, replacing manual operation, improving bending efficiency and pressure control accuracy, and ensuring the continuity and stability of the guiding action during the bending process.

[0009] Preferably, the guiding mechanism includes a sleeve, which is fixedly connected inside the mounting base. A sliding rod is slidably connected inside the sleeve, and a spring is installed inside the sleeve. A top plate is fixedly connected to the end of the sliding rod away from the sleeve. The top plate contacts the fixed block. The spring provides elastic support to the fixed block through the linkage between the sliding rod and the top plate, buffering vibration and impact during the operation of the bending machine and preventing the guiding structure from shifting due to mechanical vibration. At the same time, the contact between the top plate and the fixed block can help limit the relative position of the support base and the mounting base, enhancing the stability of the overall structure and preventing the guiding components from loosening and affecting the bending accuracy.

[0010] Preferably, a limiting ring is fixedly connected inside the sleeve. The limiting ring is slidably connected to the slide rod. The limiting ring restricts the sliding limit position of the slide rod inside the sleeve, preventing the slide rod from coming out and causing the elastic support to fail. This ensures that the cooperation between the spring and the slide rod is always within the effective range, guarantees the stable support of the top plate for the fixed block, and improves the safety and reliability of the guide structure.

[0011] Preferably, one end of the spring contacts the slide rod, and the other end of the spring contacts the sleeve. The support force of the top plate is adaptively adjusted by elastic deformation. The gap is dynamically compensated under different working conditions of the bending machine (such as high-speed operation or load changes), maintaining the tight fit of the guide structure, avoiding component wear or guide jamming caused by rigid contact, extending the service life of the equipment and ensuring long-term processing accuracy.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model innovatively configures a top plate, sliding rod, and spring collaborative assembly. The elastic force of the spring drives the sliding rod to link with the top plate, achieving flexible guidance and precise centering of the workpiece. This structure effectively solves the problem of the lack of guiding function in traditional bending machines. Through elastic limiting, it ensures that the workpiece maintains a stable posture throughout the bending process, fundamentally avoiding dimensional deviations caused by offset and swaying. This significantly improves the accuracy and consistency of key parameters such as the bending length and curvature of the guardrail, ensuring standardized processing quality of the finished product.

[0013] 2. This utility model innovatively adopts a combination structure of wheels and guide rollers, using rolling contact to precisely guide the connecting seat, ensuring that the pressure block maintains strict trajectory accuracy during reciprocating motion. Simultaneously, through the embedded cooperation of the connecting block with the guide groove and guide block, a directional constraint system for gear transmission is constructed, enabling stable axial positioning of the gears during meshing. This design, through the synergistic effect of a dual guiding mechanism, not only ensures the motion accuracy of the actuators but also enhances the smoothness of the transmission system, effectively improving the reliability of equipment operation and processing consistency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 A partial three-dimensional structural diagram; Figure 3 For the present utility model Figure 2 Enlarged view of section A in the diagram; Figure 4 For the present utility model Figure 2 Enlarged view of section B in the diagram.

[0015] In the diagram: 1. Support base; 11. Fixing block; 2. Mounting seat; 3. Rack; 31. Connecting seat; 32. Pressure block; 33. Wheel frame; 34. Wheel; 35. Guide rail; 36. Connecting block; 37. Guide groove; 38. Fixing frame; 39. Guide block; 4. Bearing seat; 41. Motor; 42. Gear; 5. Guide mechanism; 51. Sleeve; 52. Slide rod; 53. Limiting ring; 55. Spring; 56. Top plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 A guide structure for a guardrail bending machine includes a support base 1, a fixing block 11 fixedly connected to the upper end of the support base 1, a mounting base 2 fixedly connected to the upper end of the support base 1, a rack 3 slidably connected inside the mounting base 2, a connecting seat 31 fixedly connected to the lower end of the rack 3, a pressure block 32 fixedly connected to the lower end of the connecting seat 31, a wheel frame 33 fixedly connected to the outer side of the connecting seat 31, a wheel 34 rotatably connected inside the wheel frame 33, and a guide rail 35 fixedly connected to the inner wall of the mounting base 2. The rack 3 is slidably connected to a wheel 34. The guide rail 35 and the wheel 34 slide together to provide precise horizontal guidance for the rack 3, restricting the rack 3 to move only along the preset trajectory. This avoids the rack 3 from deviating or shaking during bending, which would cause guide deviation. This significantly improves the positioning accuracy and processing consistency of the guardrail bending. A connecting block 36 is fixedly connected to the back of the rack 3. The connecting block 36 is slidably connected to the mounting base 2. A guide groove 37 is opened inside the connecting block 36. A fixing bracket 38 is fixedly connected to the upper end of the mounting base 2.

[0018] Please see Figure 2-4 The fixed bracket 38 has a guide block 39 fixedly connected inside. The guide block 39 is slidably connected to the guide groove 37. The cooperative structure of the connecting block 36, the guide groove 37 and the guide block 39 forms a double guiding constraint (horizontal and vertical directions), which further restricts the movement trajectory of the rack 3, prevents it from tilting or deflecting when bent, and ensures that the pressing force of the pressure block 32 on the guardrail is uniform and stable, avoiding deformation of the plate or bending angle error due to guide failure. The upper end of the mounting base 2 is fixedly connected to the bearing seat 4, and the right side of the bearing seat 4 is fixed. A motor 41 is installed, and the output end of the motor 41 is rotatably connected to the bearing seat 4. A gear 42 is fixedly connected to the output end of the motor 41. The gear 42 meshes with the rack 3. The motor 41 drives the gear 42 to mesh with the rack 3, which converts the rotational motion into the precise linear motion of the rack 3. This realizes the automatic and adjustable pressing of the pressure block 32 on the guardrail, replacing manual operation, improving bending efficiency and pressure control accuracy, and ensuring the continuity and stability of the guiding action during the bending process. A guide mechanism 5 is provided on the mounting base 2.

[0019] Please see Figure 2-4The guide mechanism 5 includes a sleeve 51. The sleeve 51 is fixedly connected inside the mounting base 2. A slide rod 52 is slidably connected inside the sleeve 51. A limit ring 53 is fixedly connected inside the sleeve 51. The limit ring 53 is slidably connected to the slide rod 52, limiting the sliding limit position of the slide rod 52 within the sleeve 51. This prevents the slide rod 52 from dislodging and causing the elastic support to fail, ensuring that the cooperation between the spring 55 and the slide rod 52 is always within an effective range. This ensures the stable support of the top plate 56 for the fixed block 11, improving the safety and reliability of the guide structure. A spring 55 is installed inside the sleeve 51. One end of the spring 55 contacts the slide rod 52, and the other end contacts the sleeve 51. The spring 55 adaptively adjusts the top plate 56 through elastic deformation. The supporting force dynamically compensates for gaps under different working conditions of the bending machine (such as high-speed operation or load changes), maintains the tight fit of the guide structure, avoids component wear or guide jamming caused by rigid contact, extends the service life of the equipment and ensures long-term processing accuracy. The end of the slide rod 52 away from the sleeve 51 is fixedly connected to the top plate 56, which contacts the fixed block 11. The spring 55 provides elastic support force to the fixed block 11 through the linkage between the slide rod 52 and the top plate 56, buffering vibration and impact during the operation of the bending machine and preventing the guide structure from shifting due to mechanical vibration. At the same time, the contact between the top plate 56 and the fixed block 11 can help limit the relative position of the support base 1 and the mounting seat 2, enhance the stability of the overall structure and prevent the guide components from loosening and affecting the bending accuracy.

[0020] The specific implementation process of this utility model is as follows: In use, the operator can manually drive the two top plates 56 to move horizontally in opposite directions simultaneously. This action will simultaneously drive the slide rod 52 connected to it to slide smoothly along the inner wall of the limiting ring 53. During the movement, the slide rod 52 gradually compresses the spring 55, allowing it to accumulate elastic potential energy. After the top plates 56 are adjusted to a suitable distance, the workpiece to be processed is placed smoothly on the preset positioning surface of the fixing block 11. Then, the external force on the top plates 56 is released, and the compressed spring 55 quickly releases its elastic potential energy, pushing the top plates 56 back towards the workpiece through the slide rod 52 until the two top plates 56 flexibly contact the two sides of the workpiece and form a balanced clamping force. At this time, under the continuous elastic force of the spring 55, the top plates 56, in conjunction with the precise guidance of the slide rod 52 and the limiting ring 53, can dynamically maintain the workpiece in a centered position in the horizontal direction, effectively avoiding workpiece displacement caused by external force interference during processing, and providing a stable initial reference for subsequent bending processes.

[0021] When entering the bending operation stage, the drive motor 41 is started, and its output shaft drives the gear 42 fixed to it to rotate at a constant speed. The gear 42, through meshing with the rack 3, converts the rotational motion into the linear motion of the rack 3, driving the rack 3 to move smoothly along the preset path. To ensure the accuracy of the rack 3's movement direction, its sidewall forms a sliding fit with the guide block 39 through the connecting block 36. The two restrict the lateral offset of the rack 3 through the high-precision mating surface, so that the rack 3 can only move in a straight line along the axial direction, thereby providing initial guidance for the entire transmission chain.

[0022] As the rack 3 moves linearly, the connecting seat 31 connected to its end moves synchronously, thereby driving the wheel frame 33 and the wheel 34 mounted on it to roll along the inner cavity of the guide rail 35. The rolling contact between the wheel 34 and the guide rail 35 not only reduces the moving friction resistance, but also further limits the movement trajectory of the connecting seat 31 through the rigid constraint of the guide rail 35, ensuring that it moves strictly in the preset direction. The stable movement of the connecting seat 31 is finally transmitted to the pressure block 32, so that the pressure block 32 always maintains a precise positioning posture and movement stability during the bending operation, effectively avoiding problems such as bending angle deviation and uneven pressing force caused by the misalignment or vibration of the connecting seat 31, thereby significantly improving the dimensional accuracy and finished product consistency of the guardrail bending.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A guide structure for a guardrail bending machine, comprising a support base (1), characterized in that: A fixing block (11) is fixedly connected to the upper end of the support base (1), and a mounting base (2) is fixedly connected to the upper end of the support base (1). A rack (3) is slidably connected inside the mounting base (2). A connecting seat (31) is fixedly connected to the lower end of the rack (3). A pressure block (32) is fixedly connected to the lower end of the connecting seat (31). A wheel frame (33) is fixedly connected to the outer side of the connecting seat (31). A wheel (34) is rotatably connected inside the wheel frame (33). A guide mechanism (5) is provided on the mounting base (2).

2. The guide structure of the guardrail bending machine according to claim 1, characterized in that: A guide rail (35) is fixedly connected to the inner wall of the mounting base (2), and a wheel (34) is slidably connected inside the guide rail (35).

3. The guide structure of the guardrail bending machine according to claim 1, characterized in that: A connecting block (36) is fixedly connected to the back of the rack (3). The connecting block (36) is slidably connected to the mounting base (2). A guide groove (37) is provided inside the connecting block (36). A fixing frame (38) is fixedly connected to the upper end of the mounting base (2). A guide block (39) is fixedly connected inside the fixing frame (38). The guide block (39) is slidably connected to the guide groove (37).

4. The guide structure of the guardrail bending machine according to claim 1, characterized in that: The upper end of the mounting base (2) is fixedly connected to a bearing seat (4), and a motor (41) is fixedly installed on the right side of the bearing seat (4). The output end of the motor (41) is rotatably connected to the bearing seat (4), and a gear (42) is fixedly connected to the output end of the motor (41). The gear (42) meshes with the rack (3).

5. The guide structure of the guardrail bending machine according to claim 1, characterized in that: The guide mechanism (5) includes a sleeve (51), the sleeve (51) is fixedly connected inside the mounting base (2), a slide rod (52) is slidably connected inside the sleeve (51), a spring (55) is provided inside the sleeve (51), and a top plate (56) is fixedly connected to one end of the slide rod (52) away from the sleeve (51), and the top plate (56) is in contact with the fixing block (11).

6. The guide structure of a guardrail bending machine according to claim 5, characterized in that: The sleeve (51) is fixedly connected to a limiting ring (53), and the limiting ring (53) is slidably connected to the slide rod (52).

7. The guide structure of the guardrail bending machine according to claim 5, characterized in that: One end of the spring (55) is in contact with the slide bar (52), and the other end of the spring (55) is in contact with the sleeve (51).

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