Hot press mold for automobile door sill

Abstract

The utility model discloses a hot-pressing die for automobile door sill, concretely relates to the technical field of automobile die, including the upper plate and base of up and down distribution, is fixed through a plurality of vertical rods between the upper plate and base, be equipped with two groups of hot-pressing die components between the upper plate and base, the hot-pressing die component includes the template, the bottom of template is equipped with the door sill upper die, and the door sill lower die is equipped with just below the door sill upper die, be equipped with the upper die cooling spare between the template and the door sill upper die, be equipped with the lower die cooling spare between the door sill lower die and base, the utility model discloses through setting two groups of hot-pressing die components, utilize the cooling water waste heat preheating of a group of hot-pressing die components another group of hot-pressing die components to reduce energy consumption greatly, and the double die alternate hot-pressing automobile door sill to improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive mold technology, specifically to a hot pressing mold for automotive door sills. Background Technology

[0002] As a core protective component under the car door, the production of the car door sill relies on a hot pressing process for precise molding. This process requires first heating high-strength steel, aluminum alloy, or composite sheet material to its softening range to ensure sufficient plasticity. Then, the mold needs to be preheated to prevent the softened material from cooling down rapidly upon contact with the cold mold, which would reduce the fit. Next, the softened material is placed into the mold cavity, and hydraulic pressure is used to make the material completely fit the inner wall of the mold, replicating the sill's curvature, grooves, and other structural details. Finally, the molded part needs to be rapidly cooled to prevent warping and dimensional deviations during the cooling process.

[0003] In existing automotive door sill hot pressing mold systems, mold preheating and mold cooling are two independent processes. When the mold cools the hot-pressed door sill material, the coolant absorbs heat and is directly discharged without recovering or utilizing this waste heat. Before the next batch of production, the mold needs to be reheated by an external heating device, resulting in a large amount of heat being wasted and additional energy consumption and costs in the production process. Utility Model Content

[0004] The purpose of this invention is to provide a hot pressing mold for automobile door sills. By setting two sets of hot pressing mold components, the residual heat of the cooling water of one set of hot pressing molds is used to preheat the other set of hot pressing molds to significantly reduce energy consumption. At the same time, the two molds alternately hot press the automobile door sills to improve production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hot pressing mold for automobile door sills, comprising an upper plate and a base distributed vertically, the upper plate and the base being fixed together by multiple uprights, two sets of hot pressing mold assemblies being provided between the upper plate and the base, each hot pressing mold assembly including a template, an upper door sill mold being provided at the bottom of the template, and a lower door sill mold being provided directly below the upper door sill mold, an upper mold cooling component being provided between the template and the upper door sill mold, and a lower mold cooling component being provided between the lower door sill mold and the base.

[0006] Preferably, the upper mold cooling component includes an upper cooling groove fixed to the bottom end of the template, and an installation plate is slidably disposed inside the upper cooling groove; a sealing gasket is fixed to the outer wall of the installation plate, and the outer wall of the sealing gasket fits against the inner wall of the upper cooling groove to seal the gap between the outer wall of the installation plate and the inner wall of the upper cooling groove.

[0007] Preferably, the mounting plate divides the interior of the upper cooling tank into a water cavity and a mounting cavity distributed vertically. The upper sill mold is disposed inside the mounting cavity and extends out of the bottom of the upper cooling tank. The mounting plate is fixed to the top of the upper sill mold. Multiple springs are fixed between the top of the mounting plate and the top of the interior of the upper cooling tank.

[0008] Preferably, the upper cooling tank has an inlet pipe connected to the water cavity fixed at its front end, an upper connecting pipe connected to the water cavity fixed on one side of the upper cooling tank, and an insertion pipe fixed at the end of the upper connecting pipe away from the upper cooling tank.

[0009] Preferably, the lower mold cooling component includes a lower cooling groove fixed to the top of the base, and a second mounting plate is slidably disposed inside the lower cooling groove; a second sealing gasket is fixed to the outer wall of the second mounting plate, and the outer wall of the second sealing gasket is in contact with the inner wall of the lower cooling groove to seal the gap between the outer wall of the second mounting plate and the inner wall of the lower cooling groove.

[0010] Preferably, the mounting plate two divides the interior of the lower cooling tank into an upper and lower distributed mounting cavity two and a water cavity two. The lower sill mold is located inside the mounting cavity two and extends out of the top of the lower cooling tank. The mounting plate two is fixed to the bottom end of the lower sill mold. Multiple springs two are fixed between the bottom end of the mounting plate two and the bottom end of the interior of the lower cooling tank.

[0011] Preferably, a liquid outlet pipe and a lower connecting pipe communicating with the water cavity are fixed on one side of the lower cooling tank, and the liquid outlet pipe is located in front of the lower connecting pipe. The end of the lower connecting pipe away from the lower cooling tank is located directly below the insert pipe. When the upper mold of the threshold and the lower mold of the threshold are closed, the insert pipe is inserted into the lower connecting pipe, so that the upper connecting pipe and the lower connecting pipe are connected.

[0012] Preferably, the top of the base is fixed with a water pump 1 and a water pump 2 distributed front to back, and the water pump 1 and the water pump 2 are both located between two sets of hot press mold assemblies; the water cavity 2 on one set of hot press mold assemblies and the water cavity 1 on the other set of hot press mold assemblies are respectively connected to the inlet and outlet of the water pump 2 through pipes; the water cavity 1 on one set of hot press mold assemblies and the water cavity 2 on the other set of hot press mold assemblies are respectively connected to the inlet and outlet of the water pump 1 through pipes.

[0013] Preferably, both templates are slidably mounted on the uprights, allowing the templates to slide up and down along the uprights to guide the movement of the upper mold on the threshold.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model sets up two sets of hot pressing mold components. The residual heat of the cooling water in one set of hot pressing mold components can be used to preheat the other set of hot pressing mold components, realizing the secondary utilization of heat. This reduces or even eliminates the need for additional heating devices to preheat the molds, significantly reducing energy consumption. At the same time, the two molds alternately perform hot pressing work on the car door sill, reducing waiting time and improving production efficiency. 2. By setting up a movable mounting plate and spring, this utility model can, on the one hand, buffer the instantaneous pressure brought by the hydraulic system when the mold is closed, avoid damage to the upper and lower molds of the threshold due to rigid extrusion, and extend the service life of the mold. On the other hand, during the cooling stage after hot pressing, the coolant injected into the water cavity will drive the mounting plate to move in opposite directions, forming continuous pressure on the upper and lower molds of the threshold, that is, to maintain pressure on the upper and lower molds of the threshold, ensuring that the material is not easily deformed during the cooling process, and ensuring the production quality of the threshold. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a structural diagram of the two sets of hot pressing mold components of this utility model; Figure 3 This is a cross-sectional view of the hot pressing mold assembly of this utility model; Figure 4 for Figure 3 Schematic diagram of the upper and lower molds of the middle threshold being joined together; Figure 5 This is a structural diagram of the upper mold cooling component, lower mold cooling component, water pump one, and water pump two of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Top plate; 2. Base; 3. Upright pole; 4. Hot press mold assembly; 41. Template; 42. Upper sill mold; 43. Lower sill mold; 44. Upper mold cooling component; 45. Lower mold cooling component; 441. Upper cooling tank; 442. Mounting plate 1; 443. Spring 1; 444. Liquid inlet pipe; 445. Upper connecting pipe; 446. Insert pipe; 447. Sealing gasket 1; 451. Lower cooling tank; 452. Mounting plate two; 453. Spring two; 454. Liquid outlet pipe; 455. Lower connecting pipe; 456. Sealing gasket two; 5. Water pump one; 6. Water pump two. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model provides, for example Figures 1-5The illustrated hot-pressing mold for a car door sill includes an upper plate 1 and a base 2 distributed vertically. The upper plate 1 and the base 2 are fixed together by multiple uprights 3. Two sets of hot-pressing mold assemblies 4 are provided between the upper plate 1 and the base 2. Specifically, each hot-pressing mold assembly 4 includes a template 41. The bottom of the template 41 is provided with an upper door sill mold 42, and a lower door sill mold 43 is provided directly below the upper door sill mold 42. The templates 41 in the two sets of hot-pressing mold assemblies 4 are driven synchronously downward by a hydraulic system, which can drive the upper door sill mold 42 downward to close with the lower door sill mold 43 for hot pressing the car door sill material. Moreover, both templates 41 are slidably mounted on the uprights 3, allowing the templates 41 to slide up and down along the uprights 3 to guide the movement of the upper door sill mold 42.

[0019] Next, an upper mold cooling component 44 is provided between the template 41 and the upper sill mold 42. Specifically, the upper mold cooling component 44 includes an upper cooling groove 441 fixed to the bottom end of the template 41. An installation plate 442 is slidably provided inside the upper cooling groove 441, and a sealing gasket 447 is fixed to the outer wall of the installation plate 442. The outer wall of the sealing gasket 447 fits against the inner wall of the upper cooling groove 441 to seal the gap between the outer wall of the installation plate 442 and the inner wall of the upper cooling groove 441. The installation plate 442 divides the interior of the upper cooling groove 441 into upper and lower sections. The system comprises a water cavity and an installation cavity. The upper sill mold 42 is located inside the installation cavity and extends to the bottom of the upper cooling groove 441. The mounting plate 442 is fixed to the top of the upper sill mold 42. Multiple springs 443 are fixed between the top of the mounting plate 442 and the top of the upper cooling groove 441. An inlet pipe 444 communicating with the water cavity is fixed to the front end of the upper cooling groove 441. An upper pipe 445 communicating with the water cavity is fixed to one side of the upper cooling groove 441, and an insertion pipe 446 is fixed to the end of the upper pipe 445 away from the upper cooling groove 441.

[0020] A lower mold cooling component 45 is provided between the lower mold 43 and the base 2. Specifically, the lower mold cooling component 45 includes a lower cooling groove 451 fixed to the top of the base 2. A second mounting plate 452 is slidably disposed inside the lower cooling groove 451, and a second sealing gasket 456 is fixed to the outer wall of the second mounting plate 452. The outer wall of the second sealing gasket 456 fits against the inner wall of the lower cooling groove 451 to seal the gap between the outer wall of the second mounting plate 452 and the inner wall of the lower cooling groove 451. The second mounting plate 452 divides the interior of the lower cooling groove 451 into upper and lower sections. The installation cavity 2 and water cavity 2 are provided. The lower sill mold 43 is located inside the installation cavity 2 and extends to the top of the lower cooling groove 451. The second mounting plate 452 is fixed to the bottom end of the lower sill mold 43. Multiple second springs 453 are fixed between the bottom end of the second mounting plate 452 and the bottom end of the lower cooling groove 451. A liquid outlet pipe 454 and a lower connecting pipe 455 communicating with the water cavity 2 are fixed on one side of the lower cooling groove 451. The liquid outlet pipe 454 is located in front of the lower connecting pipe 455. The end of the lower connecting pipe 455 away from the lower cooling groove 451 is located directly below the insertion pipe 446.

[0021] When the upper and lower molds of the threshold are closed, the insertion tube 446 is inserted into the lower connecting tube 455, so that the upper connecting tube 445 and the lower connecting tube 455 are connected. In actual use, a sealing ring is fitted on the outside of the insertion tube 446 to seal the insertion tube 446 and the lower connecting tube 455 when the insertion tube 446 is inserted into the lower connecting tube 455.

[0022] This utility model also has a water pump 5 and a water pump 6 fixed at the top of the base 2, which are distributed front to back, and both water pump 5 and water pump 6 are located between the two sets of hot press mold assemblies 4. The water cavity 2 on one set of hot press mold assembly 4 and the water cavity 1 on the other set of hot press mold assembly 4 are respectively connected to the inlet and outlet of water pump 6 through pipes; the water cavity 1 on one set of hot press mold assembly 4 and the water cavity 2 on the other set of hot press mold assembly 4 are respectively connected to the inlet and outlet of water pump 5 through pipes.

[0023] In practical use, electric valves can be installed on the pipeline of this utility model as needed. For example, electric valves can be installed on the inlet pipe 444, the upper pipe 445, the outlet pipe 454, and the lower pipe 455. Moreover, the electric valves are all controlled by the mold's control system to automatically control the opening and closing of the pipeline.

[0024] The set of hot-pressing mold components 4 on the left will be referred to as the first set of mold components, and the set of hot-pressing mold components 4 on the right will be referred to as the second set of mold components. The steps for producing car door sills according to this utility model are as follows: The lower sill mold 43 of the first set of mold components is preheated by an external heating device. The heated car sill material is then placed into the lower sill mold 43 of the first set of mold components. Then, the templates 41 in both sets of mold components are driven by the hydraulic system to move down synchronously until the upper sill mold 42 and the lower sill mold 43 close. At this time, the upper sill mold 42 and the lower sill mold 43 in the first set of mold components heat-press the material. At the same time, when the mold is closed, the insert 446 on the upper pipe 445 is inserted into the lower pipe 455, and the electric valves on both the upper pipe 445 and the lower pipe 455 are opened, thereby connecting the upper cooling tank 441 and the lower cooling tank 451 in one set of mold components. Then, coolant is supplied to the upper cooling tank 441 of the first mold assembly through the inlet pipe 444. The coolant then enters the lower cooling tank 451 through the upper pipe 445, the insert pipe 446, and the lower pipe 455, whereby the coolant cools the hot-pressed material in the first mold assembly. Simultaneously, water pump 6 is started, which transports the heated coolant from the first mold assembly to the upper cooling tank 441 of the second mold assembly. The heated coolant then enters the lower cooling tank 451 of the second mold assembly through the upper pipe 445, the insert pipe 446, and the lower pipe 455, thereby preheating the upper and lower sills of the second mold assembly. Finally, the heated coolant is discharged through the outlet pipe 454 on the lower cooling tank 451 of the second mold assembly. Moreover, while the second set of mold components is preheating, the upper and lower molds of the second set of mold components are in the closed state, which helps to reduce heat loss in the upper and lower molds and effectively improves the preheating efficiency. After the first set of mold components cools down, the hydraulic system drives both sets of mold components to open (the electric valve is closed during mold opening). While the first set of mold components is unloading material, the second set of mold components is loading material. Then, the two sets of mold components close synchronously. At this time, the second set of mold components hot-presses the material. After hot pressing, coolant is supplied to the upper cooling tank 441 and lower cooling tank 451 of the second set of mold components to cool the hot-pressed material. At the same time, water pump 5 is started, which delivers the heated coolant from the second set of mold components to the upper cooling tank 441 and lower cooling tank 451 of the first set of mold components to preheat the upper and lower molds of the door sill of the first set of mold components. The heated coolant is then discharged through the outlet pipe 454 on the lower cooling tank 451 of the first set of mold components. This cycle is repeated to achieve the alternating hot pressing of the car door sill by the two sets of mold components.

[0025] It should be noted that since the mounting plate in the water cavity is movable, a flexible hose can be fixed on the pipe connected to the water cavity, and the hose can be inserted into the water cavity. This can effectively ensure that the water in the water cavity can be completely drained, and also avoid affecting the movement of the mounting plate.

[0026] In summary, this utility model enables the use of residual heat from the cooling water of the hot pressing mold to preheat the mold, achieving secondary utilization of heat and reducing or even eliminating the need for additional heating devices to preheat the mold, thus significantly reducing energy consumption. At the same time, the two molds alternately perform the hot pressing work on the car door sill, reducing waiting time and improving production efficiency. In addition, by setting up a movable mounting plate and spring, this utility model can, on the one hand, buffer the instantaneous pressure brought by the hydraulic system when the mold is closed, avoid damage to the upper and lower molds of the threshold due to rigid extrusion, and extend the service life of the mold. On the other hand, during the cooling stage after hot pressing, the coolant injected into the water cavity will drive the mounting plate to move in opposite directions, forming continuous pressure on the upper and lower molds of the threshold, that is, to maintain pressure on the upper and lower molds of the threshold, ensuring that the material is not easily deformed during the cooling process and ensuring the production quality of the threshold.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hot pressing mold for a car door sill, comprising an upper plate (1) and a base (2) distributed vertically, wherein the upper plate (1) and the base (2) are fixed together by a plurality of uprights (3), characterized in that: Two sets of hot press mold assemblies (4) are provided between the upper plate (1) and the base (2). The hot press mold assembly (4) includes a template (41). The bottom of the template (41) is provided with a threshold upper mold (42), and a threshold lower mold (43) is provided directly below the threshold upper mold (42). An upper mold cooling component (44) is provided between the template (41) and the threshold upper mold (42), and a lower mold cooling component (45) is provided between the threshold lower mold (43) and the base (2).

2. The hot pressing mold for an automobile door sill according to claim 1, characterized in that: The upper mold cooling component (44) includes an upper cooling groove (441) fixed to the bottom end of the template (41), and an installation plate (442) is slidably provided inside the upper cooling groove (441). A sealing gasket (447) is fixed to the outer wall of the mounting plate (442). The outer wall of the sealing gasket (447) is in contact with the inner wall of the upper cooling tank (441) to seal the gap between the outer wall of the mounting plate (442) and the inner wall of the upper cooling tank (441).

3. A hot pressing mold for an automobile door sill according to claim 2, characterized in that: The mounting plate (442) divides the interior of the upper cooling tank (441) into a water cavity and a mounting cavity distributed vertically. The upper sill mold (42) is located inside the mounting cavity and extends out of the bottom of the upper cooling tank (441). The mounting plate (442) is fixed to the top of the upper sill mold (42). Multiple springs (443) are fixed between the top of the mounting plate (442) and the top of the interior of the upper cooling tank (441).

4. A hot pressing mold for an automobile door sill according to claim 3, characterized in that: The upper cooling tank (441) is fixed with an inlet pipe (444) communicating with the water chamber. The upper cooling tank (441) is fixed with an upper pipe (445) communicating with the water chamber on one side. The upper pipe (445) is fixed with an insertion pipe (446) at the end away from the upper cooling tank (441).

5. A hot pressing mold for an automobile door sill according to claim 4, characterized in that: The lower mold cooling component (45) includes a lower cooling groove (451) fixed to the top of the base (2), and a mounting plate (452) is slidably provided inside the lower cooling groove (451). The outer wall of the mounting plate 2 (452) is fixed with a sealing gasket 2 (456), the outer wall of the sealing gasket 2 (456) is in contact with the inner wall of the lower cooling tank (451), and is used to seal the gap between the outer wall of the mounting plate 2 (452) and the inner wall of the lower cooling tank (451).

6. A hot pressing mold for an automobile door sill according to claim 5, characterized in that: The mounting plate 2 (452) divides the interior of the lower cooling tank (451) into an upper and lower distributed mounting cavity 2 and a water cavity 2. The lower sill mold (43) is located inside the mounting cavity 2 and extends out of the top of the lower cooling tank (451). The mounting plate 2 (452) is fixed to the bottom end of the lower sill mold (43). Multiple springs 2 (453) are fixed between the bottom end of the mounting plate 2 (452) and the bottom end of the interior of the lower cooling tank (451).

7. A hot pressing mold for an automobile door sill according to claim 6, characterized in that: The lower cooling tank (451) is fixed with an outlet pipe (454) and a lower connecting pipe (455) communicating with the water chamber on one side. The outlet pipe (454) is located in front of the lower connecting pipe (455), and the end of the lower connecting pipe (455) away from the lower cooling tank (451) is located directly below the insertion pipe (446). When the upper mold (42) and the lower mold (43) of the threshold are closed, the insert (446) is inserted into the lower pipe (455) to connect the upper pipe (445) and the lower pipe (455).

8. A hot pressing mold for an automobile door sill according to claim 6, characterized in that: The base (2) is fixed with a water pump 1 (5) and a water pump 2 (6) distributed in front and behind, and the water pump 1 (5) and the water pump 2 (6) are both located between the two sets of hot press mold assemblies (4); The water chamber 2 on one set of hot press mold assembly (4) and the water chamber 1 on another set of hot press mold assembly (4) are respectively connected to the inlet and outlet of water pump 2 (6) through pipes; Water cavity one on a set of hot press mold assembly (4) and water cavity two on a set of hot press mold assembly (4) are respectively connected to the inlet and outlet of water pump one (5) through pipes.

9. A hot pressing mold for an automobile door sill according to claim 1, characterized in that: Both templates (41) are slidably mounted on the upright (3), so that the templates (41) can slide up and down along the upright (3) to guide the movement of the template (42) on the threshold.

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