An automatic rotating core-pulling elbow demolding mold for automobiles

Abstract

The utility model relates to the technical field of elbow demolding and discloses an automatic rotating core-pulling type elbow demolding mold for automobile, solves the problem in the background art, and comprises an upper mold cavity, a lower mold cavity and a core-pulling mechanism, a mold forming cavity is formed between the upper mold cavity and the lower mold cavity, one end of the upper mold cavity and the lower mold cavity is connected with the core-pulling mechanism, and the other end is a material injection end, the upper mold cavity and the lower mold cavity are provided with a plurality of through holes, the plurality of through holes are connected with conveying pipes, and the plurality of conveying pipes are connected with a lubricating tank, the utility model has the effects of realizing the automation of the demolding process, effectively reducing the friction during demolding and protecting the surface quality of the elbow.

Description

Technical Field

[0001] This utility model belongs to the field of tube bending demolding technology, specifically an automatic rotary core-pulling tube bending demolding mold for automobiles. Background Technology

[0002] In the automotive manufacturing industry, bends are an important component of key parts such as exhaust systems, fuel systems, and cooling systems. The manufacturing of bends usually requires molding, and demolding is a crucial step in the molding process. The quality of demolding directly affects the dimensional accuracy, surface quality, and production efficiency of the bend.

[0003] Traditional tube bending demolding methods mainly rely on manual or simple mechanical devices. However, during manual or simple mechanical demolding, the demolding force is often unevenly applied, which can easily lead to tube deformation or surface scratches. During demolding, the friction between the mandrel and the inner wall of the tube is relatively large, especially at the bending part, which can easily lead to tube deformation or surface damage. To address this, we propose an automatic rotary core-pulling tube bending demolding mold for automobiles. Utility Model Content

[0004] To address the problems raised in the background art, this utility model provides the following technical solution: an automatic rotary core-pulling type bending tube demolding mold for automobiles, comprising an upper mold cavity, a lower mold cavity, and a core-pulling mechanism. A mold forming cavity is formed between the upper mold cavity and the lower mold cavity. One end of the upper mold cavity and the lower mold cavity is connected to the core-pulling mechanism, and the other end is an injection end. Both the upper mold cavity and the lower mold cavity are provided with multiple through holes, and the multiple through holes are connected to conveying pipes. The multiple conveying pipes are connected to a lubrication box.

[0005] Preferably, both the upper and lower mold cavities are provided with connecting parts, and the connecting parts are provided with multiple threaded holes. The upper and lower mold cavities are connected by bolts passing through the threaded holes. The bolt connection method makes the mold disassembly and assembly more convenient, facilitates maintenance and replacement, and ensures a stable connection structure, so as to ensure that the mold will not loosen or deform during the molding process.

[0006] Preferably, the core-pulling mechanism includes a top plate, which is connected to one end of the upper mold cavity and the lower mold cavity to form a sealed structure. A mandrel is provided on the top plate, and a motor is provided on the top plate. The output end of the motor is connected to the mandrel. By driving the mandrel with the motor, the demolding process is automated, and the production efficiency is improved. The rotational core-pulling method reduces the friction between the mandrel and the inner wall of the bent tube, thereby reducing the risk of product damage.

[0007] Preferably, the mandrel is matched with the shape of the mold forming cavity, and the size of the mandrel is smaller than that of the mold forming cavity. The matching design of the mandrel and the mold forming cavity ensures the forming accuracy of the bent tube, and the slightly smaller size design reduces the demolding resistance and improves the demolding efficiency.

[0008] Preferably, the lubrication tank is equipped with a pump body, which is used to deliver lubricating fluid into the mold forming cavity. The pump body realizes automatic delivery of lubricating fluid, ensures uniform distribution of lubricating fluid, and improves lubrication effect.

[0009] Preferably, the lubrication tank is provided with lubricating fluid, which is mineral oil, vegetable oil or synthetic lubricant. The flexibility in choosing the lubricating fluid improves the adaptability of the mold.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] During operation, the upper and lower mold cavities are first tightly closed through connecting parts and bolts to form the mold forming cavity. Heated tubing is injected into the mold forming cavity from the injection end, and under pressure and temperature, it is formed into a bent pipe. The pump in the lubrication tank starts, delivering lubricant through the delivery pipe and through hole to the mold forming cavity. The lubricant is evenly distributed on the inner wall of the mold forming cavity and the surface of the mandrel, reducing friction during demolding. The motor starts, driving the mandrel to rotate. This rotation reduces friction between the mandrel and the inner wall of the bent pipe, preventing scratches or deformation on the bent pipe surface. Simultaneously, the mandrel moves along the axis... The core is gradually pulled out of the bend by the moving part. Due to the lubricant, the core pulling process is smoother. After the core is pulled out, the motor stops working, and the upper and lower mold cavities are separated by the connecting part and bolts. The formed bend is taken out from the mold forming cavity and enters the next process. After demolding, the excess lubricant flows back to the lubrication tank through the through hole and the conveying pipe. During the next demolding, the pump in the lubrication tank will transport the recovered lubricant back to the mold forming cavity, realizing the recycling of lubricant, realizing the automation of the demolding process, effectively reducing the friction during demolding, and protecting the surface quality of the bend. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a front view structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the connection structure between the through hole and the conveying pipe of this utility model;

[0016] In the diagram: 1. Upper mold cavity; 2. Lower mold cavity; 3. Connecting part; 4. Threaded hole; 5. Bolt; 6. Mold forming cavity; 7. Top plate; 8. Mandrel; 9. Motor; 10. Injection end; 11. Through hole; 12. Conveying pipe; 13. Lubrication box. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Depend on Figure 1-3 The present invention includes an upper mold cavity 1, a lower mold cavity 2, and a core-pulling mechanism. A mold forming cavity 6 is formed between the upper mold cavity 1 and the lower mold cavity 2. One end of the upper mold cavity 1 and the lower mold cavity 2 is connected to the core-pulling mechanism, and the other end is an injection end 10. Both the upper mold cavity 1 and the lower mold cavity 2 are provided with multiple through holes 11, and the multiple through holes 11 are connected to the conveying pipes 12. The multiple conveying pipes 12 are connected to the lubrication box 13.

[0019] Both the upper mold cavity 1 and the lower mold cavity 2 are provided with connecting parts 3, and multiple threaded holes 4 are provided on the connecting parts 3. The upper mold cavity 1 and the lower mold cavity 2 are connected by bolts 5 passing through the threaded holes 4. The bolt connection method makes the mold disassembly and assembly more convenient, facilitates maintenance and replacement, and ensures that the connection structure is stable, so as to ensure that the mold will not loosen or deform during the molding process.

[0020] The core-pulling mechanism includes a top plate 7, which is connected to one end of the upper mold cavity 1 and the lower mold cavity 2 to form a sealed structure. A mandrel 8 is installed on the top plate 7, and a motor 9 is installed on the top plate 7. The output end of the motor 9 is connected to the mandrel 8. By driving the mandrel with the motor, the demolding process is automated, which improves production efficiency. The rotational core-pulling method reduces the friction between the mandrel and the inner wall of the bent tube, reducing the risk of product damage.

[0021] The mandrel 8 is shaped to match the forming cavity 6 of the mold. The size of the mandrel 8 is smaller than that of the forming cavity 6. The matching design between the mandrel and the forming cavity ensures the forming accuracy of the bent tube. The slightly smaller size design reduces demolding resistance and improves demolding efficiency.

[0022] A pump body is installed inside the lubrication tank 13. The pump body is used to deliver lubricating fluid into the mold forming cavity 6. The pump body realizes the automatic delivery of lubricating fluid, ensures uniform distribution of lubricating fluid, and improves the lubrication effect.

[0023] The lubrication box 13 is equipped with lubricating fluid, which can be mineral oil, vegetable oil or synthetic lubricant. The flexibility in choosing the lubricating fluid improves the adaptability of the mold.

[0024] Working principle: During operation, the upper mold cavity 1 and the lower mold cavity 2 are first tightly closed by the connecting part 3 and bolts 5 to form the mold forming cavity 6. The heated pipe is injected into the mold forming cavity 6 from the injection end 10. Under the action of pressure and temperature, it is formed into a bent pipe. The pump in the lubrication tank 13 is started, and the lubricant is delivered to the mold forming cavity 6 through the delivery pipe 12 and the through hole 11. The lubricant is evenly distributed on the inner wall of the mold forming cavity 6 and the surface of the mandrel 8, reducing the friction during demolding. The motor 9 is started, driving the mandrel 8 to rotate. The rotation reduces the friction between the mandrel 8 and the inner wall of the bent pipe, avoiding scratches or deformation on the surface of the bent pipe. While rotating, the mandrel 8... Moving axially, the core is gradually pulled out of the bend. Due to the lubricant, the core-pulling process is smoother. After the core is pulled out, the motor 9 stops working, and the upper mold cavity 1 and the lower mold cavity 2 are separated by the connecting part 3 and the bolt 5. The formed bend is taken out from the mold forming cavity 6 and enters the next process such as cooling and inspection. After demolding, the excess lubricant flows back to the lubrication tank 13 through the through hole 11 and the conveying pipe 12. During the next demolding, the pump in the lubrication tank 13 will transport the recovered lubricant back to the mold forming cavity 6, realizing the recycling of lubricant, realizing the automation of the demolding process, effectively reducing the friction during demolding, and protecting the surface quality of the bend.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] 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. An automatic rotary core-pulling type demolding mold for automobiles, comprising an upper mold cavity (1), a lower mold cavity (2), and a core-pulling mechanism, characterized in that: A mold forming cavity (6) is formed between the upper mold cavity (1) and the lower mold cavity (2). One end of the upper mold cavity (1) and the lower mold cavity (2) is connected to the core pulling mechanism, and the other end is the injection end (10). Both the upper mold cavity (1) and the lower mold cavity (2) are provided with multiple through holes (11). The multiple through holes (11) are connected to the conveying pipe (12), and the multiple conveying pipes (12) are connected to the lubrication box (13).

2. The automatic rotary core-pulling type tube bending demolding mold for automobiles according to claim 1, characterized in that: Both the upper model cavity (1) and the lower model cavity (2) are provided with a connecting part (3), and the connecting part (3) is provided with a plurality of threaded holes (4). The upper model cavity (1) and the lower model cavity (2) are connected by bolts (5) passing through the threaded holes (4).

3. The automatic rotary core-pulling type tube bending demolding mold for automobiles according to claim 2, characterized in that: The core-pulling mechanism includes a top plate (7), which is connected to one end of the upper mold cavity (1) and the lower mold cavity (2) to form a sealed structure. A mandrel (8) is provided on the top plate (7), and a motor (9) is provided on the top plate (7). The output end of the motor (9) is connected to the mandrel (8).

4. The automatic rotary core-pulling type tube bending demolding mold for automobiles according to claim 3, characterized in that: The mandrel (8) is shaped to match the mold forming cavity (6), and the size of the mandrel (8) is smaller than that of the mold forming cavity (6).

5. The automatic rotary core-pulling type tube bending demolding mold for automobiles according to claim 4, characterized in that: The lubrication tank (13) is equipped with a pump body, which is used to deliver lubricating fluid into the mold forming cavity (6).

6. The automatic rotary core-pulling type tube bending demolding mold for automobiles according to claim 5, characterized in that: The lubrication tank (13) is provided with lubricating fluid, which is mineral oil, vegetable oil or synthetic lubricant.

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