Mould mechanism suitable for integral mould pressing of battery box and using method of mould mechanism

Abstract

The invention relates to the technical field of molds for battery boxes, in particular to a mold mechanism suitable for integrated mold pressing of a battery box and a using method thereof.The mold mechanism comprises an upper mold, a lower mold, a wedge-shaped lower pressing block, a movable sliding block and a stiffening beam positioning device, and the upper mold and the lower mold are of a split structure; the wedge-shaped lower pressing blocks are arranged on the edge of the lower end face of the upper die and matched with wedge-shaped grooves formed in the sliding movable blocks, the sliding movable blocks connected in sequence are installed on the edge of the upper end face of the lower die in the circumferential direction, and stiffening beam positioning devices used for installing stiffening beams are arranged on the two sides of the lower die respectively. The lower end face, close to the sliding movable block, of the wedge-shaped pressing block is an inclined face, and the upper end face, away from the sliding movable block, of the wedge-shaped pressing block is a plane. The mold mechanism suitable for integrated mold pressing of the battery box and the using method of the mold mechanism aim at solving the problems that the integrated mold pressing forming difficulty of the battery box body of a complex structure is large, and composite material layering and poor air tightness are difficult to solve through split manufacturing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery box mold, in particular to a mold mechanism suitable for battery box integrated mold pressing and a using method thereof. BACKGROUND

[0002] The current low-altitude economy field of electric vertical take-off and landing aircraft (eVTOL) as the core equipment of low-altitude short-distance transportation, emergency rescue and other scenes, the lightweight and reliability of its power battery system directly determine the endurance mileage and operation safety. The power battery box as the core bearing and protection component of the battery system needs to meet the lightweight to reduce the energy consumption of the whole machine, the high strength to resist the flight bumps and impacts, and the high air tightness to prevent the electrolyte leakage and the intrusion of external water vapor. The three core requirements. At present, the power battery box in this field at home and abroad is still mainly made of traditional aluminum alloy material, which has the advantages of mature processing and controllable cost, but the density is as high as 2.7 g / cm 3 , resulting in that the weight of the box accounts for 15-20% of the total weight of the battery system. The resin-based carbon fiber composite battery box has the synergistic advantages of lightweight and high performance, and becomes the core direction to replace aluminum alloy, but there is no successful application case at present.

[0003] The resin-based carbon fiber composite battery box is a battery box made of carbon fiber as reinforcing material and resin matrix. Its advantage is that compared with the traditional aluminum alloy material battery box, it can effectively reduce the weight and provide an optimization scheme for the endurance mileage of the power battery; the mechanical properties of high specific strength and high specific modulus of carbon fiber and the corrosion resistance can improve the service life and maintenance cost of the box.

[0004] The resin-based carbon fiber composite battery box is generally made by hot pressing tank, mold pressing or RTM forming method. RTM belongs to liquid forming process, its principle is to first lay the reinforcing material, then inject the resin and solidify, which is suitable for the forming of composite materials. However, the cost of this process is very high, not only a high-precision sealing structure mold is needed to prevent resin leakage, but also a special resin injection system is needed, and the resin flow path depends on the mold flow channel design. The qualified rate of one-time forming of complex parts is usually less than 60%, and it is not suitable for products in the trial stage without mass production.

[0005] Hot pressing tank is a high-pressure and high-temperature curing process, its principle is to use vacuum packaging and high-pressure gas to uniformly pressurize, which is mainly used for the forming of high-performance composite materials. Due to the high cost of hot pressing tank equipment, the production forming process needs a vacuum bag to further increase the cost, and because single curing needs 4-8 hours, the production cycle is long. In addition, the deep cavity or the corners of complex parts cause the flexible vacuum bag to be unable to fit, which is difficult to ensure the forming quality of complex parts. The mold pressing belongs to a closed mold pressurization curing process, the principle is to adopt upper and lower rigid molds and direct pressurization, which can be adapted to composite materials, but the current forming mode is to press form the inner skin and the outer skin respectively, and then butt and paste them together, which will cause the product to leak at the bonding position and affect the overall strength of the product.

[0006] Therefore, the inventors provide a mold mechanism suitable for integrated mold pressing of a battery box and a use method thereof. SUMMARY

[0007] (1) Technical problems to be solved The embodiment of the present application provides a mold mechanism suitable for integrated mold pressing of a battery box and a use method thereof, which solves the technical problem of difficult integrated mold pressing of a battery box with a complex structure.

[0008] (2) Technical solutions The present application provides a mold mechanism suitable for integrated mold pressing of a battery box, comprising an upper mold, a lower mold, a wedge-shaped pressing block, a movable sliding block and a reinforcing beam positioning device, the upper mold and the lower mold are of a split structure; wherein, A plurality of wedge-shaped pressing blocks are arranged at the lower end surface edges of the upper mold, the wedge-shaped pressing blocks are adapted to the wedge-shaped grooves arranged on the movable sliding blocks, a plurality of sequentially connected movable sliding blocks are installed along the circumferential edge of the upper end surface of the lower mold, and the two sides of the lower mold are respectively provided with the reinforcing beam positioning device for installing the reinforcing beam; The lower end surface of the wedge-shaped pressing block close to the movable sliding block is a slope, and the upper end surface thereof away from the movable sliding block is a plane.

[0009] Further, the movable sliding block comprises a first movable sliding block, a second movable sliding block, a third movable sliding block and a fourth movable sliding block which are sequentially spliced; wherein, The first movable sliding block and the third movable sliding block are arranged opposite to each other at the circumferential edge of the upper end surface of the lower mold; The second movable sliding block and the fourth movable sliding block are arranged opposite to each other at the circumferential edge of the upper end surface of the lower mold.

[0010] Further, the two ends of the second movable sliding block are provided with splicing grooves for adapting and assembling with the first movable sliding block and the third movable sliding block.

[0011] Further, the mold mechanism further comprises a metal movable block, a rubber plate and a wedge-shaped block, the metal movable block is placed on the circumferential edge of the inner cavity of the lower mold and below the second sliding movable block, the rubber plate is installed in the cavity formed between the metal movable block and the inner wall of the lower mold, and the top of the metal movable block, the rubber plate and the lower mold are all provided with wedge-shaped grooves matched with the wedge-shaped block, and the metal movable block, the rubber plate and the lower mold are connected by the wedge-shaped block.

[0012] Further, the contact surfaces of the wedge-shaped block, the metal movable block and the lower mold are all inclined surfaces.

[0013] Further, the side walls on both sides of the lower mold are both provided with limiting screws for abutting against the fourth sliding movable block and the metal movable block respectively.

[0014] Further, the reinforcing beam positioning device comprises positioning blocks and mortise and tenon joints, the positioning blocks are fixed on the upper end surface of the lower mold, and the top surface of the positioning block is provided with a plurality of positioning bosses arranged at intervals; The mortise and tenon joints are arranged on the opposite sides of the upper end surface of the lower mold and used for limiting the horizontal displacement of the reinforcing beam, the mortise and tenon joints are matched with the bottom of the reinforcing beam so that the bottom of the reinforcing beam is installed on the lower mold, and the top of the reinforcing beam is provided with positioning holes matched with the positioning bosses.

[0015] Further, the upper end surface of the lower mold is provided with L-shaped grooves on the opposite sides, and the mortise and tenon joints are arranged at the bottom of the L-shaped grooves.

[0016] Further, the mold mechanism further comprises lifting rings, and a plurality of lifting rings are installed on the two side end surfaces of the upper mold and the lower mold and used for being connected with a crane device.

[0017] The application also provides a use method of the mold mechanism suitable for the integrated mold pressing of the battery box, which comprises the following steps: Laying the inner skin for product manufacturing on the upper end surface of the lower mold; Positioning and installing two reinforcing beams on the lower mold by using the reinforcing beam positioning device; Placing the metal movable block on the circumferential edge of the inner cavity of the lower mold and below the second sliding movable block, installing the rubber plate in the cavity formed between the metal movable block and the inner wall of the lower mold, and connecting the metal movable block and the rubber plate to the lower mold by the wedge-shaped block, and then laying the outer skin for product manufacturing; Placing the four sliding movable blocks on the circumferential edge of the upper end surface of the lower mold in pairs respectively, and sequentially splicing the four sliding movable blocks; An upper mold is placed above the lower mold and clamping is performed.

[0018] (3) Advantageous Effects In conclusion, the present application realizes convenient opening and closing of the mold and rapid loading and unloading of the battery box forming material by the split upper mold and lower mold design, provides operation space for pre-assembly of the three-layer structure of the inner skin, the reinforcing beam and the outer skin, realizes integrated load-bearing battery box mold pressing production, simplifies the mold operation process and reduces the material laying difficulty, thereby solving the problems of composite material delamination and poor air tightness in the split manufacturing process. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0020] Figure 1 is a structure schematic diagram of a mold mechanism suitable for integrated mold pressing of a battery box provided by the embodiments of the present application; Figure 2 is a structure schematic diagram of an upper mold of a mold mechanism suitable for integrated mold pressing of a battery box provided by the embodiments of the present application; Figure 3 is a structure schematic diagram of a lower mold of a mold mechanism suitable for integrated mold pressing of a battery box provided by the embodiments of the present application; Figure 4 is a structure schematic diagram of a metal movable block of a mold mechanism suitable for integrated mold pressing of a battery box provided by the embodiments of the present application; Figure 5 is an axial view of a structure of a movable sliding block after installation of a mold mechanism suitable for integrated mold pressing of a battery box provided by the embodiments of the present application; Figure 6 is a top view of a structure of a movable sliding block after installation of a mold mechanism suitable for integrated mold pressing of a battery box provided by the embodiments of the present application; Figure 7 is a partial exploded structure schematic diagram of a product after forming provided by the embodiments of the present application; Figure 8 is a flow schematic diagram of a use method of a mold mechanism suitable for integrated mold pressing of a battery box provided by the embodiments of the present application.

[0021] In the drawings: 1-Upper mold; 2-Lower mold; 3-Wedge-shaped lower pressure block; 4-First sliding block; 5-Second sliding block; 6-Third sliding block; 7-Fourth sliding block; 8-Metal movable block; 9-Rubber plate; 10-Wedge block; 11-Limiting screw; 12-Positioning block; 13-Tongue and tenon joint; 14-Positioning boss; 15-Lifting ring; 100-Reinforcing beam; 200-Inner skin; 300-Outer skin. Detailed Implementation

[0022] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention. That is, the present invention is not limited to the described embodiments, and any modifications, substitutions and improvements to the parts, components and connection methods are covered without departing from the spirit of the present invention.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, 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 invention.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] A first aspect of the present invention provides a mold mechanism suitable for integral molding of battery boxes, see [link to relevant documentation]. Figures 1-2The mold mechanism can include an upper mold 1, a lower mold 2, wedge-shaped pressing blocks 3, movable sliding blocks, and a reinforcing beam positioning device. The upper mold 1 and the lower mold 2 are of a split structure. A plurality of wedge-shaped pressing blocks 3 are respectively arranged at the lower end surface edges of the upper mold 1. The wedge-shaped pressing blocks 3 are matched with wedge-shaped grooves arranged on the sliding blocks. A plurality of sequentially connected sliding blocks are respectively installed along the circumference of the upper end surface edges of the lower mold 2. The two sides of the lower mold 2 are respectively provided with reinforcing beam positioning devices for installing reinforcing beams 100. The lower end surface of the wedge-shaped pressing block 3 close to the sliding block is a slope, and the upper end surface thereof away from the sliding block is a plane.

[0027] In the above embodiment, through the design of the split upper mold 1 and the lower mold 2, the convenient opening and closing of the mold and the rapid loading and unloading of the battery box forming material are realized. The operation space is provided for the pre-assembly of the three-layer structure of the inner skin 200, the reinforcing beam 100, and the outer skin 300. The integrated load-bearing battery box mold pressing production is realized. The operator can easily complete the laying, positioning, and other actions, thereby simplifying the mold operation process and reducing the material laying difficulty.

[0028] The upper mold 1 refers to the upper part of the mold structure that can be separated from the lower mold 2. The split design is adopted to facilitate the loading and unloading of the battery box forming material and the demolding. The lower mold 2 is the lower part of the fixed structure of the mold. The lower mold 2 and the upper mold 1 together form the forming cavity of the battery box. The material of the lower mold 2 is the same as that of the upper mold 1.

[0029] The reinforcing beam positioning device is a component for accurately fixing the position of the reinforcing beam 100, ensuring that the upper and lower end surfaces of the reinforcing beam 100 are tightly fitted with the inner skin 200 and the outer skin 300 without displacement during mold pressing, so as to adapt to the bidirectional positioning requirements of the reinforcing beam 100. The reinforcing beam positioning device is arranged on the two sides of the lower mold 2 to install the reinforcing beam 100. The reinforcing beam 100 is a reinforcing component of the battery box. It is pre-fixed before mold pressing. The reinforcing beam 100 and the relative displacement thereof with the skin are limited by the double fixing structure of the bottom mortise and tenon connection part in the reinforcing beam positioning device and the positioning boss arranged at the top, thereby avoiding the displacement of the reinforcing beam 100 and the generation of gaps between the reinforcing beam 100 and the product, and meeting the demand of the overall structural strength of the battery box.

[0030] The wedge-shaped pressing block 3 is a wedge-shaped structure arranged at the bottom edge of the upper mold 1, which is used to push the sliding block to move inward to hold the material during mold closing. The sliding block is a movable forming component installed on the lower mold 2, which is used to adapt to the forming of complex structures such as the edges and grooves of the battery box. Through the wedge-shaped matching design of the wedge-shaped pressing block 3 and the sliding block, the wedge-shaped pressing block 3 of the upper mold 1 can accurately guide and synchronously press the sliding block during mold closing, thereby constraining the sliding block to move inward and avoiding pressure deviation during mold pressing. The problem of uneven wall thickness of the edges of the battery box caused by the displacement of the traditional sliding block is solved, and the accuracy of the edge size of the product is improved.

[0031] like Figure 7 As shown, this molding mechanism places the formed reinforcing beam 100 into the mold and integrally molds and solidifies it with the inner skin 200 and outer skin 300, thereby avoiding air leakage and enhancing the overall strength of the product. It also reduces production cycle time for mass production. Specifically, when the upper mold 1 is subjected to downward pressure, the wedge-shaped lower pressure block 3 is embedded into the wedge-shaped groove of the sliding block with its narrow end first and its wide end last. As the wedge-shaped lower pressure block 3 moves downward, the inclined surface decomposes the vertically downward force into two forces: a normal force to ensure the two wedge surfaces fit tightly together, and a tangential force pointing inwards towards the sliding block, pushing it to move inwards and thus gripping the sliding block tightly.

[0032] As an optional implementation, see [link to implementation details]. Figures 5-6 The sliding block comprises a first sliding block 4, a second sliding block 5, a third sliding block 6, and a fourth sliding block 7, which are sequentially assembled. The first sliding block 4 and the third sliding block 6 are positioned opposite each other on the circumferential edge of the upper end face of the lower mold 2; the second sliding block 5 and the fourth sliding block 7 are positioned opposite each other on the circumferential edge of the upper end face of the lower mold 2. Furthermore, the second sliding block 5 has splicing grooves at both ends for fitting and assembling with the first sliding block 4 and the third sliding block 6.

[0033] In the above embodiments, the first sliding block 4 and the third sliding block 7 can specifically be two pistol-shaped sliding blocks with identical structures, arranged opposite each other in the lower mold 2. The second sliding block 5 and the fourth sliding block 7 can specifically be a straight sliding block and a boat-shaped sliding block, respectively, arranged opposite each other in the lower mold 2. The straight sliding block has splicing grooves at both ends, which are used to fit and assemble with the two corresponding pistol-shaped sliding blocks. It should be noted that the pistol-shaped, boat-shaped, and straight sliding blocks are defined because their structural shapes resemble pistol, boat, and straight shapes, respectively. The specific structural form of the sliding blocks is not limited, but is adapted to the specific shape of the battery box to be formed. The number and structure of the sliding blocks are adjusted adaptively for battery boxes with different shapes. It is evident that by grouping the sliding blocks to adapt to the molding of different areas of the product, the problem that traditional integral blocks cannot adapt to complex structures such as the corners or grooves of the battery box is solved. Furthermore, there is a splicing relationship between the straight sliding blocks and the pistol-shaped sliding blocks, so as to achieve the limiting of the straight sliding blocks by the pistol-shaped sliding blocks.

[0034] As an optional implementation method, such as Figure 4As shown, the mold mechanism further comprises a metal movable block 8, a rubber plate 9 and a wedge-shaped block 10. The metal movable block 8 is placed on the circumferential edge of the inner cavity of the lower mold 2 and below the second sliding movable block 5. The rubber plate 9 is installed in the cavity formed between the metal movable block 8 and the inner wall of the lower mold 2. The top of the metal movable block 8, the rubber plate 9 and the lower mold 2 are all provided with wedge-shaped grooves matched with the wedge-shaped block 10, and the metal movable block 8 and the rubber plate 9 are connected to the lower mold 2 by the wedge-shaped block 10.

[0035] In the above embodiment, the metal movable block 8 and the rubber plate 9 are connected to the lower mold 2 by the wedge-shaped block 10. After the mold is closed, when the rubber plate 9 is pressed downward by the second sliding movable block 5 above, the compressed rubber plate 9 needs to recover to its original shape. Since the inner wall of the lower mold 2 is a rigid fixed surface, it can only release to one side of the metal movable block 8 to provide expansion force, so as to push the metal movable block 8 to move towards the product side, so as to make it more closely attached to the product surface to reduce product deformation.

[0036] The two sides of the wedge-shaped block 10 near the metal movable block 8 and the lower mold 2 are both provided with inclined surface structures. The narrow end of the wedge-shaped block 10 enters the wedge-shaped matching grooves on the top of the metal movable block 8, the rubber plate 9 and the lower mold 1 first, and the wide end enters later. When the wedge-shaped block 10 is pressed downward, the wide end of the wedge-shaped block is in interference contact with the side wall of the wedge-shaped matching groove, so as to limit the displacement of the metal movable block 8 in the vertical direction and the horizontal direction parallel to the rubber plate 9. One force decomposed by the inclined surface tightens the metal movable block 8 inward to make the metal movable block 8 closely attached to one side of the product, so as to prevent product deformation.

[0037] Further, the contact surfaces of the wedge-shaped block 10, the metal movable block 8 and the lower mold 2 are all inclined surfaces. Limiting screws 11 are installed on the side walls of the two sides of the lower mold 2 and are used for abutting against the fourth sliding movable block 7 and the metal movable block 8 respectively. Threaded holes are formed on the side walls of the two sides of the lower mold 2, and the limiting screws 11 are installed in the threaded holes. After the limiting screw 11 on one side is tightened, it is used for abutting against the fourth sliding movable block 7. After the limiting screw 11 on the other side is tightened, it is used for abutting against the metal movable block 8. The limiting and fixing of the sliding movable block and the metal movable block 8 by the limiting screw 11 ensure the stability of the sliding movable block and the metal movable block 8 during the mold closing process, avoid displacement of the sliding movable block and the metal movable block 8 caused by pressure, and ensure product forming precision.

[0038] As an optional embodiment, as shown in FIG. 6, Figure 3As shown, the reinforcing beam positioning device comprises a positioning block 12 and a mortise and tenon joint 13, the positioning block 12 is fixed to the upper end face of the lower mold 2, and the top surface of the positioning block 12 is arranged with a plurality of positioning bosses 14 at intervals. Two mortise and tenon joints 13 are respectively arranged on the opposite sides of the upper end face of the lower mold 2 and are used to limit the horizontal displacement of the reinforcing beam 100, the mortise and tenon joint 13 is matched with the bottom of the reinforcing beam 100 to make the bottom of the reinforcing beam 100 mortise and tenon installed on the lower mold 2, and the top of the reinforcing beam 100 is provided with a positioning hole matched with the positioning boss 14. Further, L-shaped grooves are formed on the opposite sides of the upper end face of the lower mold 2, and the mortise and tenon joint 13 is arranged at the bottom of the L-shaped groove.

[0039] In the above embodiment, the positioning block 12 is fixed to the lower mold 2 by screws, the top surface of the positioning block 12 is arranged with a plurality of positioning bosses 14 at intervals, L-shaped grooves are respectively arranged on the two sides of the lower mold 2, the L-shaped grooves are located below the positioning block 12, the vertical surface of the L-shaped groove is flush with the outer surface of the positioning block 12, the mortise and tenon joint 13 is arranged on the horizontal surface of the L-shaped groove, the mortise and tenon joint 13 is matched with the bottom of the reinforcing beam 100 to make the bottom of the reinforcing beam 100 mortise and tenon installed on the lower mold 2, and the top of the reinforcing beam 100 is provided with a positioning hole matched with the positioning boss 14. At the same time, the double positioning of the reinforcing beam 100 is realized through the structural design of the mortise and tenon joint 13 at the bottom and the positioning boss 14 at the top, the mortise and tenon joint 13 limits the horizontal displacement, the top positioning hole cooperates with the positioning boss 14 to limit the vertical displacement, the position of the reinforcing beam 100 is locked from top to bottom, the requirements of the reinforcing beam 100 closely adhering to the inner skin 200 and the outer skin 300 are met, the virtual connection between the three during molding is avoided, the adhesion precision of the reinforcing beam 100, the inner skin 200 and the outer skin 300 is improved, and the overall structural integrity of the product is ensured.

[0040] Specifically, the positioning block 12 is an upper positioning component of the reinforcing beam positioning device, which is used to limit the vertical displacement of the reinforcing beam 100 through the positioning boss 14, and the mortise and tenon joint 13 is a lower positioning structure of the reinforcing beam positioning device, which is used to limit the horizontal displacement of the reinforcing beam 100 and is composed of concave and convex structures machined on the lower mold 2. The depth and width of the concave structure and the height and width of the convex structure are accurately fitted with the concave and convex structures on the bottom of the reinforcing beam 100. Specifically, the concave structure on the lower mold 2 is fitted with the convex platform on the bottom of the reinforcing beam 100, and the convex platform on the lower mold 2 is fitted with the concave structure on the bottom of the reinforcing beam 100, to realize the installation and positioning of the reinforcing beam 100.

[0041] Further, the positioning boss 14 is in an elliptical structure. The positioning boss 14 in the elliptical structure realizes the quick alignment of the reinforcing beam 100 and the lower mold 2, and compared with the circular boss, the elliptical structure limits the rotational displacement, and compared with the square boss, the elliptical structure is also easier to assemble.

[0042] As an optional embodiment, referring to Figure 1 The mold mechanism further comprises a lifting ring 15, and the plurality of lifting rings 15 are respectively arranged on the two side end faces of the upper mold 1 and the lower mold 2 and are used to be connected with the crane equipment, so that the crane equipment can lift the mold to separate the upper mold 1 from the lower mold 2 for demolding.

[0043] The second aspect of the embodiment of the present application provides a use method of the mold mechanism suitable for the integrated mold pressing of the battery box, referring to Figure 8 The method can include the following steps: S100, laying the inner skin 200 for making the product on the upper end face of the lower mold 2.

[0044] S200, positioning and installing the two reinforcing beams 100 on the lower mold 2 by using the reinforcing beam positioning device.

[0045] Specifically, first, check whether the positioning block 12 of the reinforcing beam positioning device is firm and whether the positioning boss 14 is intact, then take two reinforcing beams 100, align the mortise and tenon connection part 13 on the L-shaped groove horizontal face of the lower mold 2 with the concave-convex structure at the bottom of the reinforcing beam 100, slowly push in to make them completely embedded, and at the same time, ensure that the positioning hole at the top of the reinforcing beam 100 is accurately aligned with the positioning boss 14 on the positioning block 12 and is inserted. After the installation of the reinforcing beam is completed, push the reinforcing beam 100 in the horizontal direction by hand, detect whether it moves, ensure that there is no looseness, if there is no displacement when pushing, it is determined that the installation is firm, if there is displacement, the position of the reinforcing beam 100 needs to be adjusted again, until there is no looseness when pushing. This step ensures the accurate installation of the reinforcing beam 100 through double positioning, guarantees the quality of the product, avoids the local protrusion caused by the offset of the reinforcing beam 100 when laying the outer skin 300, and at the same time, ensures that the reinforcing beam 100 is closely attached to the inner skin 200, which lays a foundation for improving the overall strength of the product.

[0046] S300, placing the metal movable block 8 on the circumferential edge of the inner cavity of the lower mold 2 and below the second sliding movable block 5, then installing the rubber plate 9 in the cavity formed between the metal movable block 8 and the inner wall of the lower mold 2, and limiting and connecting the metal movable block 8 and the rubber plate 9 to the lower mold 2 by the wedge-shaped block 10, and then laying the outer skin 300 for making the product.

[0047] Specifically, the outer skin 300 is laid flat on the outer surface of the reinforced beam 100 and the inner skin 200, and is scraped flat along the surface of the reinforced beam 100 and the edge of the cavity to ensure that the outer skin 300 is wrinkle-free, bubble-free and completely covers the reinforced beam 100 and the inner skin 200. When the rubber plate 9 is inserted into the cavity formed by the metal movable block 8 and the inner wall of the lower mold 2, it is ensured that the rubber plate 9 is not extruded and deformed and completely fills the cavity. Then, the wedge-shaped block 10 is taken and aligned with the wedge-shaped matching groove formed by the metal movable block 8, the rubber plate 9 and the top of the lower mold 2, and the wide end of the wedge-shaped block 10 is pressed tightly to make it completely embedded in the wedge-shaped matching groove.

[0048] S400, place the four sliding blocks on the upper end surface of the lower mold 2 in pairs, and sequentially splice the four sliding blocks.

[0049] Specifically, after the lower mold 2 is fixed on the workbench of the upper press, it needs to be calibrated horizontally and the dust and impurities on the top surface of the lower mold 2 need to be cleaned to ensure that no particles affect the molding. Then, the first sliding block 4 and the third sliding block 6 are placed in pairs from the left and right sides of the lower mold 2, respectively, and the inner skin 200 is laid flat in the cavity of the lower mold 2. The surface of the cavity is scraped flat with a scraper to ensure that the inner skin 200 is wrinkle-free, bubble-free and completely adheres to the surface of the cavity, and the edge part beyond the cavity is evenly expanded. Then, the fourth sliding block 7 is inserted into the lower mold 2 and the corresponding limiting screw 11 is tightened to abut against the fourth sliding block 7, and the second sliding block 5 is spliced and installed to the lower mold 2 through the splicing grooves at both ends of the first sliding block 4 and the third sliding block 6. It should be noted that when installing the second sliding block 5, the splicing grooves at both ends of the second sliding block 5 should be aligned with the acting parts of the first sliding block 4 and the third sliding block 6 that have been installed, and slowly pushed in to realize splicing. Further, the first sliding block 4 and the third sliding block 7 can be two pistol-shaped sliding blocks with the same structure, and the second sliding block 5 and the fourth sliding block 7 can be a one-shaped sliding block and a boat-shaped sliding block, respectively. The boat-shaped sliding block and the one-shaped sliding block are arranged in pairs on the lower mold 2, and the one-shaped sliding block is provided with splicing grooves at both ends for splicing and connecting with the two corresponding pistol-shaped sliding blocks.

[0050] S500, place the upper mold 1 above the lower mold 2 and perform clamping.

[0051] Specifically, the installation state of each part of the mold is checked first, and after confirmation, the hoisting equipment is started, the upper mold 1 is slowly hoisted to the upper side of the lower mold 2, the position of the upper mold 1 is adjusted to align the two side edges with the lower mold 2, and at the same time, the wedge-shaped lower pressing block 3 at the bottom of the upper mold 1 is precisely aligned with the wedge-shaped groove of the sliding movable block, then the upper mold 1 is slowly lowered to realize the closing of the mold, and after the mold is closed, the mold is pressurized by the upper press to form. When demolding, the hoisting equipment is used to separate the upper mold 1 and the lower mold 2, and then the parts are removed in sequence, the two groups of sliding movable blocks are removed, the first sliding movable block 4, the third sliding movable block 6 and the second sliding movable block 5 on the two sides are taken out, the limiting screw 11 on the side surface of the lower mold 2 for limiting is loosened, and the fourth sliding movable block 7 is taken out, then the limiting screw 11 for limiting the metal movable block 8 is loosened, the metal movable block 8, the rubber plate 9 and the wedge-shaped block 10 are removed, so as to realize the taking out of the product from the lower mold 2 and complete the demolding operation.

[0052] It should be clear that each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments. The present application is not limited to the specific steps and structures described above and shown in the drawings. Moreover, for the sake of brevity, detailed description of known methods and techniques is omitted.

[0053] The above is only an embodiment of the present application, and is not limited to the present application. The present application can have various modifications and changes for those skilled in the art without departing from the scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A mold mechanism suitable for integrated molding of battery boxes, characterized in that, The system includes an upper mold (1), a lower mold (2), a wedge-shaped lower pressure block (3), a movable slider, and a reinforcing beam positioning device. The upper mold (1) and the lower mold (2) are separate structures. Multiple wedge-shaped pressing blocks (3) are respectively disposed at the lower end face edge of the upper mold (1). The wedge-shaped pressing blocks (3) are adapted to the wedge-shaped grooves provided on the sliding blocks. Multiple sliding blocks connected in sequence are respectively installed circumferentially at the upper end face edge of the lower mold (2). The lower mold (2) is provided with reinforcing beam positioning devices for installing reinforcing beams (100) on both sides. The wedge-shaped pressing block (3) has an inclined surface on its lower end face near the sliding block, and a flat surface on its upper end face away from the sliding block.

2. The mold mechanism suitable for the integrated mold pressing of a battery case according to claim 1, wherein The sliding block comprises a first sliding block (4), a second sliding block (5), a third sliding block (6), and a fourth sliding block (7) connected in sequence; wherein, The first sliding block (4) and the third sliding block (6) are disposed opposite to each other on the circumferential edge of the upper end face of the lower mold (2); The second sliding block (5) and the fourth sliding block (7) are disposed opposite to each other on the circumferential edge of the upper end face of the lower mold (2).

3. The mold mechanism for integrated molding of battery boxes according to claim 2, characterized in that, The second sliding block (5) has splicing grooves at both ends for fitting and assembling with the first sliding block (4) and the third sliding block (6).

4. The mold mechanism for integrated molding of battery boxes according to claim 3, characterized in that, It also includes a metal movable block (8), a rubber plate (9) and a wedge block (10). The metal movable block (8) is placed on the circumferential edge of the inner cavity of the lower mold (2) and located below the second sliding block (5). The rubber plate (9) is installed in the cavity formed between the metal movable block (8) and the inner wall of the lower mold (2). The top of the metal movable block (8), the rubber plate (9) and the lower mold (2) are all provided with wedge grooves that are adapted to the wedge block (10). The metal movable block (8) and the rubber plate (9) are limited and connected to the lower mold (2) by the wedge block (10).

5. The mold mechanism for integrated molding of battery boxes according to claim 4, characterized in that, The contact surfaces of the wedge block (10), the metal movable block (8), and the lower mold (2) are all inclined surfaces.

6. The mold mechanism for integrated molding of battery boxes according to claim 4, characterized in that, Limiting screws (11) are installed on the side walls on both sides of the lower mold (2) and are used to abut against the fourth sliding block (7) and the metal movable block (8), respectively.

7. The mold mechanism for integrated molding of battery boxes according to claim 1, characterized in that, The reinforcing beam positioning device includes a positioning block (12) and a tenon-and-mortise connection (13). The positioning block (12) is fixed to the upper end face of the lower mold (2). The top surface of the positioning block (12) has multiple positioning bosses (14) arranged at intervals. The two mortise and tenon joints (13) are respectively disposed on opposite sides of the upper end face of the lower mold (2) and are used to limit the horizontal displacement of the reinforcing beam (100). The mortise and tenon joints (13) are adapted to the bottom of the reinforcing beam (100) so that the bottom mortise and tenon of the reinforcing beam (100) is installed on the lower mold (2). The top of the reinforcing beam (100) is provided with a positioning hole adapted to the positioning boss (14).

8. The mold mechanism for integrated molding of battery boxes according to claim 7, characterized in that, The upper end face of the lower mold (2) has L-shaped grooves on both sides, and the tenon and mortise connection (13) is located at the bottom of the L-shaped groove.

9. The mold mechanism for integrated molding of battery boxes according to claim 1, characterized in that, It also includes lifting rings (15), and multiple lifting rings (15) are respectively installed on both sides of the upper mold (1) and the lower mold (2) and are used to connect with the crane equipment.

10. A method of using the mold mechanism for integrated molding of battery boxes as described in claim 4, characterized in that, The method includes the following steps: The inner skin (200) for making the product is laid on the upper surface of the lower mold (2). Two reinforcing beams (100) are positioned and installed on the lower mold (2) using a reinforcing beam positioning device; Place the metal movable block (8) on the circumferential edge of the inner cavity of the lower mold (2) and below the second sliding movable block (5). Then install the rubber plate (9) in the cavity formed between the metal movable block (8) and the inner wall of the lower mold (2). The metal movable block (8) and the rubber plate (9) are limited and connected to the lower mold (2) by the wedge block (10). Then lay the outer skin (300) for making the product. The four sliding blocks are placed in pairs facing each other on the circumferential edge of the upper end face of the lower mold (2), and the four sliding blocks are spliced ​​together in sequence. The upper mold (1) is placed above the lower mold (2) and the molds are closed.

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