A device for integrally molding a top cover

Abstract

The application discloses a top cover injection integrated molding device and belongs to the technical field of injection molding. The device comprises a main body, a collecting assembly, a driving assembly and the like. The collecting assembly is arranged in the interior of the injection molding machine body and comprises a collecting box arranged at the lower end of an inclined plate. A protective pad is fixed in the interior of the collecting box. Protective columns are fixed on the two sides of the collecting box. The driving assembly is arranged on the inner bottom surface of the injection molding machine body and comprises an electric guide rail fixedly arranged in the interior of the injection molding machine body. The top cover injection integrated molding device can effectively buffer the impact force when the workpiece falls, can avoid mechanical damage such as scratches and depressions on the surface of the workpiece, can guarantee the production quality of the workpiece, and can automatically push the collecting box out of the injection molding machine body through the driving assembly, so that workers can quickly and safely take out the product, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the field of injection molding technology, specifically to a device for integral injection molding of a top cover. Background Technology

[0002] The battery casing top cover is an important component of the battery shell, mainly used to encapsulate the internal components of the battery, realize electrical connection and ensure battery safety. It has key applications in power batteries, energy storage batteries and consumer electronics batteries. The battery casing top cover is produced by injection molding process, in which plastic raw materials (such as engineering plastics such as PP, PC, PA, etc.) are melted at high temperature, injected into the mold cavity through an injection molding machine, and then cooled and solidified to form a one-piece battery casing top cover.

[0003] For example, the patent with announcement number CN215849316U discloses an integrated injection molding machine, which relates to the field of injection molding technology. It includes an operating table, a heating component, a hopper, and a buffer component. The device forms a certain buffering effect between the hopper and the heating component through the buffer component to avoid plastic particles impacting the screw and causing damage to the screw.

[0004] In the aforementioned patent, after the molded workpiece detaches from the moving mold, it falls naturally into the collection tank under the action of gravity. This process has significant potential risks. As the workpiece generates a large amount of impact energy during its fall, when the workpiece collides with the collection tank, it causes mechanical damage such as scratches and dents on the workpiece surface. This collection method may directly lead to the workpiece's dimensional accuracy and surface quality failing to meet standards, thereby affecting the production qualification rate. The fallen workpiece needs to be manually removed by reaching into the collection tank, which is not conducive to improving production efficiency.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0006] Based on the above-mentioned problems in the existing technology, the problem to be solved by this application is to provide a top cover injection molding device, which solves the problem that after the molded workpiece leaves the moving mold, it falls into the collection tank due to gravity, and the collision easily causes damage to the surface of the workpiece and makes it inconvenient to remove the molded workpiece.

[0007] The technical solution adopted by this application to solve its technical problem is: a top cover injection molding device, including an injection molding machine body;

[0008] A collection assembly is installed inside the injection molding machine body. The collection assembly includes a collection box placed at the lower end of the inclined plate. A protective pad is fixed inside the collection box, and protective posts are fixed on both sides of the collection box.

[0009] A drive assembly is installed on the inner bottom surface of the injection molding machine body. The drive assembly includes an electric guide rail fixedly installed inside the injection molding machine body. A slider is provided inside the electric guide rail. A mounting plate is fixed on the slider. A collection box is installed on the mounting plate. A limiting mechanism for installing the collection box is provided on the mounting plate and the collection box.

[0010] Furthermore, the limiting mechanism includes latches fixedly installed on both sides of the mounting plate, and hooks are fixedly fixed on both sides of the collection box, with the latches fastened to the hooks.

[0011] Furthermore, the limiting mechanism also includes a back plate fixedly installed at the other end of the slider. L-shaped clamps are installed on both sides of the back plate. Cylinders are fixedly installed on both sides of the back plate. The output end of each cylinder is fixedly connected to the corresponding L-shaped clamp. Rubber strips are fixed on opposite sides of the two L-shaped clamps and are tightly fitted to the outer wall of the collection box. Guide blocks are fixedly installed on both sides of the back plate. Guide frames adapted to the guide blocks are fixed on the L-shaped clamps. The guide frames are sleeved on the guide blocks and slide along the guide blocks.

[0012] Furthermore, the protective pad is made of silicone, and the protective column is made of foam.

[0013] Furthermore, an injection molding assembly is installed at one end of the injection molding machine body, and a mold clamping assembly is installed at the other end of the injection molding machine body.

[0014] Furthermore, a protective door is hinged to one side of the injection molding machine body.

[0015] Furthermore, a protective window is installed on the upper part of the injection molding machine body.

[0016] The beneficial effects of this application are as follows: The top cover injection molding device provided by this application effectively buffers the impact force when the workpiece falls by setting a silicone protective pad and a foam protective column inside the collection box, avoiding mechanical damage such as scratches and dents on the workpiece surface, and ensuring the production quality of the workpiece. Through the set drive component, the collection box can be automatically pushed out of the injection molding machine body, making it convenient for workers to quickly and safely take out the product, thus improving production efficiency.

[0017] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is an overall schematic diagram of a top cover injection molding device according to this application;

[0020] Figure 2 This is a bottom view of the overall design of a top cover injection molding device according to this application;

[0021] Figure 3 This is a rear view schematic diagram of an integral injection molding device for a top cover according to this application;

[0022] Figure 4 This is a schematic diagram of the overall collection component of a top cover injection molding device according to this application;

[0023] Figure 5 This is an exploded view of the collection component of a top cover injection molding device according to this application;

[0024] Figure 6 This is a partial overall schematic diagram of the collection component of a top cover injection molding device according to this application;

[0025] Figure 7 for Figure 3 A magnified structural diagram of A in the middle;

[0026] The following are the labeling elements in the figure:

[0027] 1. Injection molding machine body; 2. Injection molding components; 3. Mold clamping components; 4. Collection components; 41. Electric guide rail; 42. Slider; 43. Mounting plate; 44. Collection box; 45. Buckle; 46. Hook; 47. Protective pad; 48. Protective post; 49. Back plate; 410. L-shaped clamp; 411. Cylinder; 412. Rubber strip; 413. Guide block; 414. Guide frame; 5. Protective door; 6. Protective window; 7. Inclined plate. Detailed Implementation

[0028] 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.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] like Figure 1-2As shown, this application provides a top cover injection molding device, including an injection molding machine body 1. An injection molding component 2 is installed at one end of the injection molding machine body 1. This component can ensure the smooth transport of plastic raw materials and inject molten plastic into the mold cavity at a suitable pressure and flow rate. A mold closing component 3 is installed at the other end of the injection molding machine body 1. The mold closing component 3 can tightly close the mold to withstand the high pressure during the injection molding process, so that the battery case top cover is integrally formed. Both the injection molding component 2 and the mold closing component 3 are existing technologies, so they will not be described in detail.

[0031] The injection molding machine body 1 has a molding outlet (not marked in the figure) located at the mold clamping assembly 3. This outlet is the key channel for the ejection of the molded battery case top cover. In order to guide the ejection of the molded battery case top cover smoothly, inclined plates 7 are fixedly installed on both sides of the lower end of the molding outlet. The inclined plates 7 are made of stainless steel and have been polished to have a smooth surface, which can effectively reduce the friction between the battery case top cover and the inclined plates 7. The two inclined plates 7 are inclined at a certain angle to each other, forming a gradually narrowing channel. Using the action of gravity, the molded battery case top cover slides down the inclined plates 7 to achieve automatic unloading.

[0032] like Figure 4-7 As shown, a collection assembly 4 is installed inside the injection molding machine body 1. The collection assembly 4 includes a collection box 44 placed at the lower end of the inclined plate 7. The collection box 44 is made of high-strength engineering plastic, which has good impact resistance and corrosion resistance. A protective pad 47 is fixedly installed on the bottom surface of the collection box 44. The protective pad 47 is made of silicone material. The silicone material is soft and has good elasticity, which can effectively buffer the impact force when the top cover falls, and prevent the battery case top cover from being damaged during collection. At the same time, protective posts 48 are fixedly installed on both sides of the collection box 44. The protective posts 48 are made of foam material. The foam material has a certain degree of flexibility and cushioning performance. When the battery case top cover falls into the collection box 44, the protective posts 48 can play a certain limiting and protective role, preventing the battery case top cover and the collection box 44 from colliding with each other.

[0033] The injection molding machine body 1 is equipped with a drive assembly for moving the collection box 44. The drive assembly includes an electric guide rail 41, which is fixedly installed inside the injection molding machine body 1, providing a track for the movement of the collection box 44. A slider 42 is slidably mounted on the electric guide rail 41. The slider 42 is connected to a lead screw (not shown in the figure) inside the electric guide rail 41 by a threaded connection. When the drive motor on the electric guide rail 41 is started, the lead screw rotates accordingly. Through the principle of threaded transmission, the slider 42 is driven to slide smoothly along the electric guide rail 41. The electric guide rail 41 is a mature existing technology, so it will not be described in detail.

[0034] A mounting plate 43 is bolted to one end of the slider 42. The mounting plate 43 is used to place the collection box 44. To prevent the collection box 44 from wobbling while firmly fixed on the mounting plate 43, a limiting mechanism is also provided on the mounting plate 43 and the collection box 44. The limiting mechanism consists of latches 45 fixedly installed on both sides of the mounting plate 43 and hooks 46 fixedly installed on both sides of the collection box 44 respectively. The latches 45 are made of high-strength metal and have undergone special forging process, giving them good toughness and load-bearing capacity. The hooks 46 are bolted to the collection box 44 and have been rust-proofed. The latching principle of the latches 45 and hooks 46 is existing technology. When the collection box 44 is placed on the mounting plate 43, the latches 45 can be fastened to the hooks 46 to form a limiting connection, ensuring that the collection box 44 will not shift or tip over during movement. After the battery casing top cover is formed, it falls into the collection box 44. Activating the electric guide rail 41 allows the collection box 44 to be easily pushed out of the injection molding machine body 1 along the rail, making it convenient for workers to quickly and safely remove the products from the collection box 44 and improving production efficiency.

[0035] like Figure 5-6 As shown, a back plate 49 is fixedly installed at the other end of the slider 42. The back plate 49 provides additional support and protection for the collection box 44. L-shaped clamps 410 are installed on both sides of the back plate 49. The L-shaped clamps 410 are made of high-strength alloy material and have good rigidity and strength. Cylinders 411 are also fixedly installed on both sides of the back plate 49. The output end of each cylinder 411 is firmly connected to the corresponding L-shaped clamp 410. On the opposite side of the two L-shaped clamps 410, soft and elastic rubber strips 412 are fixed. The rubber strips 412 have good wear resistance and anti-slip properties and can fit tightly against the outer wall of the collection box 44, which not only plays a buffering role but also prevents the collection box 44 from slipping. 4. To prevent damage during clamping, in order to ensure the stability of the L-shaped clamp 410 during movement, guide blocks 413 are fixedly installed on both sides of the back plate 49, and a matching guide frame 414 is fixed on the L-shaped clamp 410. The guide frame 414 is fitted on the guide block 413 and can slide smoothly along the guide block 413, so that the L-shaped clamp 410 can move radially stably. When it is necessary to further fix the collection box 44, the two L-shaped clamps 410 can be pushed to move relative to each other or in opposite directions by driving the cylinder 411, which firmly clamps the collection box 44, improves the stability of the collection box 44 during movement, and avoids product damage caused by shaking.

[0036] In actual operation, cylinder 411 is controlled by connecting to a pneumatic control system. When clamping the collection box 44, the pneumatic control system introduces compressed air into one side of the cylinder 411's air chamber. Taking a double-acting cylinder 411 as an example, if compressed air is introduced into the rodless chamber and exhaust from the rod chamber, the compressed air creates pressure in the rodless chamber, pushing the piston and extending the piston rod. As the piston rod extends, the L-shaped clamping plate 410 connected to it moves smoothly towards the collection box 44 along a set direction under the constraint of the guiding mechanism (i.e., the sliding structure composed of guide block 413 and guide frame 414). When the L-shaped clamping plate 410 contacts the outer wall of the collection box 44, as compressed air continues to flow in, the pressure in the air chamber increases continuously. The piston rod continues to push the L-shaped clamping plate 410 to apply pressure, causing the rubber strip 412 to fit tightly against the collection box 44 until the set clamping force is reached, thus firmly fixing the collection box 44.

[0037] When the collection box 44 needs to be released, the pneumatic control system changes the airflow direction, introducing compressed air into the rod chamber and exhausting the rodless chamber. At this time, the compressed air pushes the piston in the opposite direction, causing the piston rod to retract. The L-shaped clamp 410 moves away from the collection box 44 under the action of the compressed air until it returns to its initial position, completing one release action. By controlling the air intake and exhaust of the air chambers on both sides of the cylinder 411, the L-shaped clamp 410 can stably clamp and flexibly release the collection box 44, ensuring that the collection box 44 remains stable during movement and preventing damage to the battery casing top cover due to shaking.

[0038] like Figure 1 As shown, a protective door 5 is hinged to one side of the injection molding machine body 1. When not in use, the protective door 5 can be closed to protect the collecting component 4. The protective door 5 is made of high-strength transparent acrylic material with a scratch-resistant and wear-resistant surface treatment. Meanwhile, a protective window 6 is installed at the top of the injection molding machine body 1. The protective window 6 uses a double-layer tempered glass structure and is equipped with sealing strips around its perimeter. This effectively protects the injection molding component 2 and the mold clamping component 3, preventing material splashing or component loosening that may occur under high temperature and high pressure conditions, thus providing safety assurance for the entire injection molding process.

[0039] Working principle: In use, firstly, the injection molding component 2, as the core part of plastic raw material processing, uses existing mature technology to ensure the smooth internal transport of plastic raw materials. After heating and melting, the raw materials are injected into the mold cavity of the mold closing component 3 at appropriate pressure and flow rate. The mold closing component 3, through its own function, tightly closes the mold, withstands the high pressure generated during the injection molding process, provides a stable closed space for the molding of the battery casing top cover, and ensures that the plastic is formed within the mold.

[0040] After the battery case top cover is formed in the mold, the mold closing assembly 3 opens the mold, and the formed battery case top cover is discharged through the molding outlet on the injection molding machine body 1. At this time, the inclined plates 7 on both sides of the lower end of the molding outlet play a key role. The two inclined plates 7 are inclined at a certain angle to each other, forming a gradually narrowing channel. Using the principle of gravity, the battery case top cover slides down automatically along the smooth surface of the inclined plate 7, realizing the automatic unloading process and smoothly conveying the battery case top cover to the lower part.

[0041] After the battery casing top cover slides down, it falls into the collection box 44. The collection box 44 is made of high-strength engineering plastic. The protective pad 47 at the bottom and the protective posts 48 on both sides can effectively buffer the impact of the top cover falling and prevent the battery casing top cover and the collection box 44 from colliding and being damaged. The collection box 44 is placed on the mounting plate 43 and is securely connected by a limiting mechanism consisting of buckles 45 and hooks 46 to prevent displacement or tipping during movement.

[0042] When it is necessary to remove the molded battery casing top cover from the collection box 44, the electric guide rail 41 is activated. The drive motor inside the electric guide rail 41 drives the lead screw to rotate, causing the slider 42 to slide smoothly along the electric guide rail 41 through threaded transmission. This, in turn, moves the mounting plate 43 and the collection box 44 together, pushing the collection box 44 out of the injection molding machine body 1 along the track, allowing workers to quickly and safely remove the product. During the movement of the collection box 44, the cylinders 411 on both sides of the back plate 49 work in conjunction with the L-shaped clamping plate 410 to further enhance the stability of the collection box 44. When it is necessary to clamp the collection box 44, the pneumatic control system introduces compressed air into one side of the air chamber of the cylinder 411, pushing the piston to extend the piston rod. Under the constraint of the guide mechanism composed of the guide block 413 and the guide frame 414, the L-shaped clamp 410 moves smoothly towards the collection box 44 until the rubber strip 412 fits tightly against the collection box 44 and fixes it firmly. When it is necessary to release, the pneumatic control system changes the airflow direction, so that the L-shaped clamp 410 moves away from the collection box 44 and returns to its initial position.

[0043] In addition, the protective door 5 on one side of the injection molding machine body 1 can be closed when not in use to protect the collection component 4; the protective window 6 at the top adopts a double-layer tempered glass structure, and with the sealing strip, it can effectively protect the injection molding component 2 and the mold closing component 3.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for one-piece injection molding of a top cover, characterized in that: include Injection molding machine body (1); A collection assembly (4) is installed inside the injection molding machine body (1). The collection assembly (4) includes a collection box (44) placed at the lower end of the inclined plate (7). A protective pad (47) is fixed inside the collection box (44), and protective posts (48) are fixed on both sides of the collection box (44). A drive assembly is installed on the inner bottom surface of the injection molding machine body (1). The drive assembly includes an electric guide rail (41) fixedly installed inside the injection molding machine body (1). A slider (42) is provided inside the electric guide rail (41). An mounting plate (43) is fixed on the slider (42). A collection box (44) is installed on the mounting plate (43). A limiting mechanism for installing the collection box (44) is provided on the mounting plate (43) and the collection box (44).

2. The top cover injection molding device according to claim 1, characterized in that: The limiting mechanism includes buckles (45) fixedly installed on both sides of the mounting plate (43), and hooks (46) are fixedly fixed on both sides of the collection box (44), and the buckles (45) are fastened to the hooks (46).

3. The top cover injection molding device according to claim 1, characterized in that: The limiting mechanism also includes a back plate (49) fixedly installed at the other end of the slider (42). L-shaped clamps (410) are installed on both sides of the back plate (49). Cylinders (411) are fixedly installed on both sides of the back plate (49). The output end of each cylinder (411) is fixedly connected to the corresponding L-shaped clamp (410). Rubber strips (412) are fixed on the opposite side of the two L-shaped clamps (410) and are tightly fitted to the outer wall of the collection box (44). Guide blocks (413) are fixedly installed on both sides of the back plate (49). Guide frames (414) adapted to guide blocks (413) are fixed on the L-shaped clamps (410). The guide frames (414) are sleeved on the guide blocks (413) and slide along the guide blocks (413).

4. The top cover injection molding device according to claim 1, characterized in that: The protective pad (47) is made of silicone material, and the protective column (48) is made of foam material.

5. The top cover injection molding device according to claim 1, characterized in that: An injection molding assembly (2) is installed at one end of the injection molding machine body (1), and a mold closing assembly (3) is installed at the other end of the injection molding machine body (1).

6. The top cover injection molding device according to claim 1, characterized in that: A protective door (5) is hinged to one side of the injection molding machine body (1).

7. The top cover injection molding device according to claim 1, characterized in that: The upper end of the injection molding machine body (1) is equipped with a protective window (6).

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