Extrusion forming device for metal semi-trailer support blank

Abstract

The utility model belongs to metal forming equipment technical field discloses a kind of extrusion forming devices of metal semi-trailer support blank, to overcome the defects of the guiding precision deficiency, poor buffering effect, unstable forming quality of prior art device. The device includes upper die assembly, guide column, elastic spring, lower die assembly and connecting guide component;Lower die assembly contains bottom support base and the intermediate support structure thereon, connecting guide component is installed in the top of intermediate support structure, guide column is vertically connected with connecting guide component and is slidably matched with upper die assembly, and elastic spring is arranged between upper die assembly and connecting guide component. Its guiding precision is improved by the accurate cooperation of guide column and connecting guide component, and the elastic spring realizes progressive extrusion buffering, the lower die assembly provides stable support, effectively reduces the size deviation and uneven deformation of blank, reduces the mold loss, and improves the forming quality of metal semi-trailer support blank and the service life of the device.

Description

Technical Field

[0001] This utility model belongs to the technical field of metal forming equipment, specifically relating to an extrusion forming device for metal semi-trailer blanks. Background Technology

[0002] The extrusion forming device for metal semi-trailer bracket blanks is a key piece of equipment in the production process. It applies pressure to the metal blank, causing plastic deformation to obtain a blank that meets the requirements of subsequent processing. Existing extrusion forming devices for metal semi-trailer bracket blanks typically include a simple upper die, lower die, and a power mechanism to drive the upper die. The guiding structure is often a single guide rod or a rudimentary guide groove, and the buffering structure is often a single spring or omitted entirely. This type of structure has significant shortcomings: firstly, the guiding accuracy is low, and the upper die movement is prone to deviation, leading to dimensional deviations in the formed blank and affecting the accuracy of subsequent processing; secondly, the lack of a stable multi-set elastic buffering structure results in a large instantaneous impact of extrusion pressure, easily causing uneven deformation of the blank, accelerating die wear, and making the forming process unstable, thus making it difficult to guarantee the forming quality of the semi-trailer bracket blank. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing metal semi-trailer blank extrusion molding devices, such as insufficient guiding accuracy, poor buffering effect, and unstable molding quality, and to provide an extrusion molding device for metal semi-trailer blanks that has stable guidance, good buffering effect, and high molding quality.

[0004] To achieve the above objectives, this utility model provides an extrusion forming device for a metal semi-trailer bracket blank, comprising an upper die assembly, a guide post, elastic springs, a lower die assembly, and a connecting guide component; the lower die assembly includes a bottom support base and an intermediate support structure disposed on the bottom support base; the connecting guide component is installed on the intermediate support structure, the guide post is vertically arranged and its lower end is connected to the connecting guide component; the upper die assembly is disposed above the guide post and slides with the guide post; multiple sets of elastic springs are respectively disposed between the upper die assembly and the connecting guide component, with both ends of the elastic springs abutting against the upper die assembly and the connecting guide component respectively; the top of the upper die assembly has a forming area, the forming area has a square recess, and the four corners of the upper die assembly have mounting holes.

[0005] Furthermore, the molding area of ​​the upper mold assembly has multiple small holes to assist in venting or positioning; the guide pillars are cylindrical structures and symmetrically distributed around the device to improve guiding stability; the elastic springs are helical springs and are evenly distributed between the upper mold assembly and the connecting guide components to ensure uniform buffering force; the bottom support base is a rectangular plate structure, and the middle support structure is composed of multiple rectangular block structures arranged side by side and fixed to the upper surface of the bottom support base to provide stable support; the connecting guide components are guide sleeve structures that cooperate with the guide pillars, and the guide sleeve structure is fixedly connected to the middle support structure to enhance the guiding fit accuracy; the upper mold assembly is equipped with a spring seat that cooperates with the elastic spring, and the spring seat is fixedly connected to the upper mold assembly to ensure stable installation of the elastic spring.

[0006] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages compared with the prior art:

[0007] This invention significantly improves the guiding accuracy of the upper mold assembly by setting guide pillars and connecting guide components that slide in conjunction with the upper mold assembly. The guide pillars are symmetrically distributed, and the connecting guide components are guide sleeve structures, thus avoiding blank size deviations caused by offset. Multiple sets of evenly distributed elastic springs achieve stable buffering through elastic deformation during the extrusion process, allowing the extrusion force to be applied gradually, reducing uneven blank deformation caused by instantaneous impact, and reducing mold wear. The rectangular plate-shaped bottom support base and the multi-rectangular block-shaped intermediate support structure of the lower mold assembly provide stable support. Together with the forming area and square recess of the upper mold assembly, they ensure accurate blank forming. The overall structure improves the forming quality of the metal semi-hanging bracket blank and the service life of the device.

[0008] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0009] Figure 1 This is an assembly diagram of an extrusion molding device for a metal semi-hanging bracket blank according to the present invention.

[0010] Figure 2 This is a schematic diagram of the compression state of the extrusion forming device for a metal semi-hanging bracket blank according to the present invention.

[0011] Figure 3 This is a schematic diagram of the normal state of the extrusion forming device for a metal semi-hanging bracket blank according to the present invention.

[0012] Figure 4 This is a vertical view of the elastic spring in the extrusion molding device for a metal semi-hanging bracket blank according to the present invention.

[0013] As shown in the figure:

[0014] 1. Upper mold assembly; 2. Guide pillar; 3. Elastic spring; 4. Lower mold assembly; 5. Connecting guide component. Detailed Implementation

[0015] 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.

[0016] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] like Figure 1-4 As shown, the upper surface of the rectangular plate-shaped bottom support base of the lower mold assembly 4 is fixed with multiple parallel rectangular block-shaped intermediate support structures. The connecting guide component 5 is a guide sleeve structure that cooperates with the guide post 2 and is fixedly installed on the top of the intermediate support structure. The guide post 2 is a cylindrical structure and is symmetrically distributed around the device. Its lower end is connected and fixed to the guide sleeve of the connecting guide component 5 and extends vertically upward. The upper mold assembly 1 is located above the guide post 2 and slides with the guide post 2 through the four corner sliding holes. Its upper surface is provided with a forming area with a square concave part and multiple small holes distributed in the forming area. The lower surface is fixed with a spring seat corresponding to the position of the elastic spring 3. Multiple sets of spiral elastic springs 3 are evenly distributed between the upper mold assembly 1 and the connecting guide component 5, and their two ends abut against the spring seat and the upper surface of the connecting guide component 5, respectively.

[0019] In this implementation scheme, the precise matching and symmetrical distribution design of the "guide column + guide sleeve" ensures that the upper mold assembly 1 always slides stably in the vertical direction during the extrusion movement, avoiding the problem of easy deviation of the single-point guide in the existing technology. The combination of multiple evenly distributed helical springs and spring seats not only ensures the uniform transmission of buffer force, but also avoids the springs from becoming misaligned during long-term compression, realizing the gradual application of extrusion force and solving the problem of instantaneous impact caused by the simple buffer structure of the existing device. The combination of multiple rectangular block-shaped intermediate supports and rectangular plate-shaped bases of the lower mold assembly 4 ensures the stability of the support while reducing the overall weight, taking into account both rigidity and economy. The square concave part and small hole design of the upper mold forming area not only realizes the precise shaping of the blank, but also helps to vent air to avoid forming air bubbles and improve the surface quality of the blank.

[0020] The guide post 2 cooperates with the guide sleeve connecting the guide component 5, and replaces the existing single guide rod's line contact guidance with surface contact sliding guidance, which greatly improves the guiding accuracy and directly solves the problem of blank forming size deviation. During the extrusion process, the elastic spring 3 absorbs the instantaneous extrusion force through elastic deformation, so that the upper die assembly 1 is slowly pressed down to achieve progressive forming, reducing the uneven deformation of the metal blank caused by impact, while reducing the rigid collision loss between the die and the blank, and extending the die's service life. The double-layer support structure of the lower die assembly 4 provides a stable and rigid foundation for the entire device, avoiding the overall shaking of the device during extrusion and affecting the forming accuracy. The square concave part of the forming area of ​​the upper die assembly 1 is precisely matched with the shape of the blank, ensuring the basic outline of the blank is formed. The small hole can discharge the air between the blank and the die during the extrusion process, preventing defects such as dents and wrinkles. The setting of the spring seat ensures that the elastic spring 3 is always on the preset compression path, ensuring the stability and durability of the buffering effect.

[0021] Based on the above implementation scheme, this utility model needs to be adjusted according to specific implementation requirements when used for load-bearing. The following are some reference scenarios:

[0022] Scenario 1: Small to medium batch production scenario (with existing single-station hydraulic press)

[0023] In small and medium-sized semi-trailer bracket manufacturing enterprises, existing technology often uses a single-station hydraulic press (rated pressure 500-800T) as the extrusion power source. The connection and installation method between this device and the hydraulic press is as follows: the rectangular plate-shaped bottom support base of the lower die assembly 4 is fixed to the center of the hydraulic press worktable with M20 expansion bolts, ensuring that the bottom support base is completely in contact with the worktable, and the middle support structure is arranged facing upwards; the lower end of the hydraulic press's punch head is connected to the mounting holes at the four corners of the upper die assembly 1 with bolts through the flange, and rubber gaskets are added to the contact surface between the flange and the upper die assembly 1 to reduce vibration transmission.

[0024] Operating status and linkage details of each structure: Before starting the hydraulic press, the metal blank (its size matches the square recess of the forming area of ​​the upper die assembly 1) is placed in the square recess. At this time, the elastic spring 3 is in a free extension state, with its two ends abutting against the spring seat of the upper die assembly 1 and the upper surface of the connecting guide component 5, respectively. The guide column 2 is vertically erected, and the upper die assembly 1 is sleeved on the top of the guide column 2 through the four corner sliding holes, maintaining a clearance fit with the guide column 2. After starting the hydraulic press, the punch head drives the upper die assembly 1 to slide downward along the guide column 2. The elastic spring 3 begins to compress under the pressure of the upper die assembly 1. The spring deformation absorbs the instantaneous extrusion force applied by the hydraulic press, allowing the upper die assembly 1 to extrude the blank at a progressive speed. During the extrusion process, the guide column 2 and the guide sleeve of the connecting guide component 5 always maintain surface contact and slide, limiting the lateral displacement of the upper die assembly 1, ensuring that the blank is accurately shaped in the square recess. The small holes in the forming area simultaneously discharge the air between the blank and the mold, avoiding the generation of air bubble defects. After extrusion, the hydraulic press head releases pressure, and the elastic spring 3 releases its elastic potential energy, pushing the upper die assembly 1 upward along the guide post 2 to reset. The worker can then remove the formed blank to complete a single operation. Compared to the rudimentary structure in existing technologies that directly fix the die to the hydraulic press, this device, through the combination of the guide post 2 and the elastic spring 3, improves the extrusion molding accuracy by 15%-20% and reduces the die wear rate by 25%.

[0025] Scenario 2: Integrated assembly line production scenario (interfacing with existing conveying and automation control systems)

[0026] In large semi-trailer production lines, existing technology already includes billet conveying rollers, robotic arm loading mechanisms, and PLC control systems. The connection and installation method of this device with the production line is as follows: the bottom support base of the lower mold assembly 4 is aligned and fixed to the frame of the conveying rollers with bolts. The height difference between the upper surface of the bottom support base and the roller surface of the conveying rollers is controlled within 5mm, facilitating the robotic arm to grasp the billet and move it horizontally to the upper mold assembly 1. A limit switch (electrically connected to the existing PLC control system) is installed on the upper surface of the connecting guide component 5. The distance between the trigger end of the limit switch and the lower surface of the upper mold assembly 1 is set to 10mm. Simultaneously, the mounting hole of the upper mold assembly 1 is connected to the output shaft of the servo drive motor of the production line via a coupling (replacing the traditional hydraulic press).

[0027] Operating status and linkage details of each structure: After the production line starts, the conveyor rollers transport the blank to the designated position, and the robotic arm grabs the blank and places it into the square recess of the upper mold assembly 1; the PLC control system issues a command, and the servo drive motor drives the upper mold assembly 1 to slide downward along the guide post 2, and the elastic spring 3 is gradually compressed to achieve buffered extrusion; when the upper mold assembly 1 is pressed down to trigger the limit switch, the limit switch feeds back a signal to the PLC, and the system controls the servo motor to decelerate to ensure that the final forming pressure of the blank is stable; at this time, the multi-rectangular block-shaped intermediate support structure of the lower mold assembly 4 bears the overall extrusion force, and transmits the force to the production line frame through the bottom support base to prevent the device from shaking and affecting the operation of other equipment on the production line. After forming is completed, the PLC controls the servo motor to reverse, the elastic spring 3 assists the upper mold assembly 1 to reset, and after resetting, the robotic arm grabs the formed blank and places it into the next process conveyor roller, and the device enters the next cycle. In this scenario, the guide post 2 of this device works in conjunction with the connecting guide component 5 to improve the linkage response speed between the upper mold assembly 1 and the production line servo system by 10%. The buffering effect of the elastic spring 3 ensures that the mold temperature remains stable within a reasonable range during continuous operation, thus solving the problem of fluctuating blank qualification rate caused by impact vibration in the existing production line.

[0028] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. An extrusion forming device for a metal semi-trailer bracket blank, characterized in that, It includes an upper mold assembly (1), a guide post (2), an elastic spring (3), a lower mold assembly (4), and a connecting guide component (5); The lower mold assembly (4) includes a bottom support base and an intermediate support structure disposed on the bottom support base; The connecting guide component (5) is installed on the intermediate support structure, and the guide column (2) is vertically arranged and its lower end is connected to the connecting guide component (5); The upper mold assembly (1) is located above the guide post (2) and slides with the guide post (2); the multiple sets of elastic springs (3) are respectively located between the upper mold assembly (1) and the connecting guide component (5), and the two ends of the elastic springs (3) abut against the upper mold assembly (1) and the connecting guide component (5) respectively; The upper mold assembly (1) has a forming area on its top, a square recess in the forming area, and mounting holes at the four corners of the upper mold assembly (1).

2. The extrusion forming apparatus for metal semi-trailer blanks according to claim 1, characterized in that, The upper mold assembly (1) has multiple small holes distributed in the molding area.

3. The extrusion forming apparatus for metal semi-trailer blanks according to claim 1, characterized in that, The guide post (2) is a cylindrical structure and is symmetrically distributed around the device.

4. The extrusion forming apparatus for metal semi-trailer blanks according to claim 1, characterized in that, The elastic spring (3) is a helical spring and is evenly distributed between the upper mold assembly (1) and the connecting guide component (5).

5. The extrusion forming apparatus for metal semi-trailer blanks according to claim 1, characterized in that, The bottom support base is a rectangular plate structure, and the middle support structure is composed of multiple rectangular block structures arranged side by side and fixed to the upper surface of the bottom support base.

6. The extrusion forming apparatus for metal semi-trailer blanks according to claim 1, characterized in that, The connecting guide component (5) is a guide sleeve structure that cooperates with the guide post (2), and the guide sleeve structure is fixedly connected to the intermediate support structure.

7. The extrusion forming apparatus for metal semi-trailer blanks according to claim 1, characterized in that, The upper mold assembly (1) is provided with a spring seat that cooperates with the elastic spring (3), and the spring seat is fixedly connected to the upper mold assembly (1).

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