Bottom cover forming die

Abstract

The utility model discloses a bottom cover forming die which comprises an upper die and a lower die, the lower die is provided with a female die used for forming the external shape of a bottom cover, the upper die is provided with a male die used for forming the external shape of the bottom cover, and fine texture structures are arranged on the surfaces of the male die and the female die so as to increase the fluidity of plastic materials during forming. A guide device is arranged between the upper mold and the lower mold and used for ensuring accurate alignment during mold closing, cooling systems are arranged in the upper mold and the lower mold and used for accelerating cooling of a formed bottom cover, and an injection molding opening is formed in the top of the upper mold. According to the utility model, the mold forming quality and efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold manufacturing technology, in particular to a bottom cover forming mold. Background Art

[0002] Currently, mold manufacturing plays a vital role in industrial production. As a crucial component of many products, the quality of the bottom cover mold directly impacts the performance and lifespan of the final product. Currently, the molding of the bottom cover primarily relies on the mold, and the quality of the mold design and manufacturing is directly related to the quality of the finished bottom cover.

[0003] While traditional bottom cover molds can meet basic molding requirements, they still need improvement in molding quality, production efficiency, and mold life. In particular, insufficient plastic material fluidity during the molding process often leads to molding defects, affecting product quality. Therefore, improving bottom cover molds to enhance molding quality and efficiency has become a pressing issue. Utility Model Content

[0004] The present application provides a bottom cover forming mold, which is convenient for improving the quality and efficiency of mold forming.

[0005] The present application provides a bottom cover forming mold, which adopts the following technical solution:

[0006] A bottom cover molding mold includes an upper mold and a lower mold. The lower mold is provided with a concave mold for forming the external shape of the bottom cover. The upper mold is provided with a convex mold for forming the external shape of the bottom cover. The surfaces of the convex mold and the concave mold are provided with fine texture structures to increase the fluidity of the plastic material during molding and improve the molding quality. A guide device is provided between the upper and lower molds, and the guide device is used to ensure precise alignment when the molds are closed. A cooling system is provided in the upper and lower molds to accelerate the cooling of the bottom cover after molding. An injection port is provided at the top of the upper mold.

[0007] By adopting the above technical solution, the utility model designs a bottom cover molding mold. When in use, the upper mold and the lower mold are precisely clamped by using a guide device, the concave mold and the convex mold are matched, and then the mold is injection molded through the injection port. During the injection molding process, due to the fine texture structure set on the surface of the convex mold and the concave mold, the fluidity of the plastic material is increased and the molding quality is improved. At the same time, these texture structures can also play a role in venting during the molding process, preventing molding defects caused by the generation of bubbles. After injection molding, the cooling system in the upper mold and the lower mold is used to cool the molded mold to improve production efficiency. Therefore, the mold can improve the quality and efficiency of mold molding.

[0008] Preferably, a wear-resistant sheet is provided on the contact surface of the upper mold and the lower mold to reduce the wear of the mold during use and further improve the service life of the mold. The wear-resistant sheet is connected to the contact surface of the upper mold and the lower mold by bolts.

[0009] By adopting the above technical solution, when in use, the wear-resistant plate is bolted to the contact surface of the upper mold and the lower mold. The wear-resistant plate can reduce the wear caused by mold closing during the injection molding process, thereby increasing the service life of the mold. The detachable connection facilitates the replacement and inspection of the wear-resistant plate.

[0010] Preferably, the surface texture structures of the male and female molds are evenly distributed grooves or protrusions.

[0011] By adopting the above technical solution, the effects of these texture structures are improved by using evenly distributed grooves or protrusions.

[0012] Preferably, the guiding device includes a guide column provided on the upper mold or the lower mold and a corresponding guide hole provided on the other mold, and the guide column is inserted into the guide hole to achieve precise guiding.

[0013] By adopting the above technical solution, in order to facilitate the closing of the upper mold and the lower mold during use, the guide column is designed to be inserted into the guide hole, so that the upper mold or the lower mold can be accurately guided when moving.

[0014] Preferably, the cooling system includes cooling water channels arranged inside the upper mold and the lower mold, and an inlet and an outlet for introducing a cooling medium into the cooling water channels.

[0015] By adopting the above technical solution, when in use, a large amount of flowing coolant is added to the cooling water channels inside the upper mold and the lower mold, thereby cooling the forming mold between the upper mold and the lower mold.

[0016] Preferably, an ejection mechanism is provided at the bottom of the lower mold for automatically ejecting the bottom cover from the mold after molding is completed. The ejection mechanism includes an ejector plate provided in the lower mold, a space is provided between the ejector plate and the die, an ejector is provided at the top of the ejector plate, an ejector hole is provided in the die, the ejector passes through the ejector hole, a positioning rod is provided at the bottom of the die and the top of the ejector plate, a telescopic spring is fixed to the positioning rod, and the ejector plate utilizes the telescopic spring to expand and contract in the space, thereby completing the ejection of the injection mold.

[0017] By adopting the above technical solution, in order to realize the ejector of the injection mold, an ejector plate and an ejector are provided on the top of the die. The ejector passes through the ejector hole in the die and is aligned with the forming part of the mold. A spring is connected between the ejector plate and the bottom of the die through a positioning rod. The spring is used to complete the reset of the ejector. At the same time, it is convenient to buffer the use of the ejection mechanism. By connecting the driving part, the ejector plate and the ejector are driven to move for ejection.

[0018] Preferably, a through hole is provided at the bottom of the lower die, and the through hole is used to connect the output shaft of the cylinder or the hydraulic cylinder, thereby driving the ejector plate to move toward the die.

[0019] By adopting the above technical solution, when in use, the output shaft of the air cylinder or hydraulic cylinder is aligned with the through hole, thereby abutting against the ejector plate at the top of the through hole to drive the ejector plate.

[0020] Preferably, the male mold, female mold and wear-resistant sheet are all made of materials with high hardness and high wear resistance.

[0021] By adopting the above technical solution, when in use,

[0022] In summary, this application has the following beneficial effects:

[0023] 1. The present invention is designed to provide a bottom cover forming mold. The punch, die, and wear-resistant sheet are preferably made of high-hardness, high-wear-resistant materials. Wear-resistant sheets are also provided on the contact surfaces of the upper and lower molds. These designs reduce mold wear during use and further extend the mold's service life.

[0024] 2. The bottom cover molding die designed in this utility model increases the fluidity of the plastic material during molding by setting fine texture structures on the surfaces of the male and female molds, thereby achieving higher molding quality;

[0025] 3. The bottom cover molding mold designed by the present invention not only ensures the automatic ejection of the injection molding mold through the design of the ejection mechanism, but also the setting of the telescopic spring facilitates the automatic reset of the ejection mechanism, further improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of an embodiment;

[0027] Figure 2 A schematic structural diagram showing the lower mold in the embodiment;

[0028] Figure 3 A schematic structural diagram showing an upper mold in an embodiment;

[0029] Figure 4 is a cross-sectional view of an embodiment;

[0030] Explanation of the accompanying reference numerals: 1. Upper mold; 2. Lower mold; 3. Concave mold; 4. Punch; 5. Texture structure; 6. Guide device; 61. Guide column; 62. Guide hole; 7. Cooling system; 71. Cooling water channel; 8. Injection port; 9. Wear-resistant plate; 10. Bolt; 11. Ejector mechanism; 111. Ejector plate; 112. Space; 113. Ejector; 114. Ejector hole; 115. Positioning rod; 116. Telescopic spring; 12. Through hole. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below with reference to the accompanying drawings. Like components are denoted by like reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "bottom," and "top" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0032] Example 1

[0033] This embodiment discloses a bottom cover forming mold, referring to Figures 1 to 3 , including an upper mold 1 and a lower mold 2. The lower mold 2 is provided with a die 3 for forming the outer shape of the bottom cover. The upper mold 1 is correspondingly provided with a punch 4. The surfaces of the punch 4 and the die 3 are provided with fine texture structures 5. These texture structures 5 are evenly distributed grooves or protrusions to increase the fluidity of the plastic material during molding, thereby improving the molding quality.

[0034] The contact surfaces of the upper mold 1 and the lower mold 2 are provided with wear-resistant sheets 9, which are tightly connected to the contact surfaces of the upper mold 1 and the lower mold 2 by bolts 10. These wear-resistant sheets 9 can effectively reduce the wear of the mold during frequent use, thereby extending the overall service life of the mold. In order to ensure the effect of the wear-resistant sheets 9, the punch 4, the die 3 and the wear-resistant sheets 9 are all made of high hardness and high wear resistance materials, so that the accuracy and stability of the mold can be maintained during long-term use.

[0035] A guide device 6 is also added between the upper mold 1 and the lower mold 2. The guide device 6 includes a guide column 61 arranged on the upper mold 1 or the lower mold 2, and a guide hole 62 correspondingly arranged on the other mold. When the mold is closed, the guide column 61 will be accurately inserted into the guide hole 62 to ensure the precise alignment of the upper mold 1 and the lower mold 2. This can greatly improve the accuracy of the mold closing, thereby ensuring the dimensional accuracy and consistency of the molded product.

[0036] Reference Figure 4In this mold, a cooling system 7 is added to the interior of the upper mold 1 and the lower mold 2. The cooling system 7 includes a cooling water channel 71 arranged inside the upper mold 1 and the lower mold 2, and an inlet and an outlet for introducing a cooling medium into the cooling water channel 71. After the injection molding is completed, cooling water or other cooling medium can be introduced into the cooling water channel 71 through the inlet to quickly cool the mold. This can greatly shorten the cooling time of the product and improve production efficiency. At the same time, due to the uniform and rapid cooling, the quality of the molded product can be further improved.

[0037] The implementation principle of Example 1 is as follows: during the injection molding process, the upper mold 1 and the lower mold 2 are precisely clamped together by a guide device 6. After clamping, the plastic material is injected into the mold through the injection port 8 at the top of the upper mold 1. Due to the fine texture structure 5 set on the surface of the punch 4 and the die 3, the plastic material encounters less resistance during the flow process and can be more evenly filled into every corner of the mold, thereby improving the quality of the molded product. At the same time, the setting of the wear-resistant sheet 9 reduces the wear of the mold during use and ensures the long-term use effect of the mold. After injection molding, the molded mold is cooled by the cooling system 7 to improve the quality and efficiency of the mold molding.

[0038] Example 2

[0039] On the basis of Example 1, this embodiment further adds an ejection mechanism 11 at the bottom of the lower mold 2. Figure 4 The ejection mechanism 11 includes an ejector plate 111 disposed within the lower die 2, with a space 112 between the ejector plate 111 and the die 3. Multiple ejector pins 113 are evenly arranged on the top of the ejector plate 111, which can penetrate corresponding ejector pin holes 114 in the die 3. Furthermore, a through hole 12 is provided at the bottom of the lower die 2 for connecting to the output shaft of a pneumatic or hydraulic cylinder, thereby providing a stable power source for the ejector plate 111. This design enables automatic demolding of the bottom cover, greatly improving production efficiency and reducing operator labor. Once the bottom cover is formed, the ejector plate 111 is driven upward by the power source, allowing the ejector pins 113 to eject the bottom cover from the die 3.

[0040] To ensure smooth and reliable ejection, a positioning rod 115 is provided between the bottom of the die 3 and the top of the ejector plate 111. A telescopic spring 116 is fixed to the positioning rod 115. These telescopic springs 116 provide a certain buffering force during the ejection process, preventing the ejector pins 113 from being damaged by sudden force. Furthermore, the telescopic springs 116 help reset the ejection mechanism 11. After ejection, the elasticity of the telescopic springs 116 will rebound the ejector plate 111 to its original position.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A bottom cover forming mold, characterized by: The invention comprises an upper mold (1) and a lower mold (2), wherein a concave mold (3) is provided on the lower mold (2) for forming the external shape of the bottom cover, and a convex mold (4) is provided on the upper mold (1) for forming the external shape of the bottom cover. Fine texture structures (5) are provided on the surfaces of the convex mold (4) and the concave mold (3) to increase the fluidity of the plastic material during molding and improve the molding quality. A guide device (6) is provided between the upper mold (1) and the lower mold (2), and the guide device (6) is used to ensure accurate alignment when the molds are closed. A cooling system (7) is provided in the upper mold (1) and the lower mold (2) for accelerating the cooling of the bottom cover after molding. An injection port (8) is provided at the top of the upper mold (1).

2. The bottom cover forming mold according to claim 1, characterized in that: A wear-resistant sheet (9) is provided on the contact surface of the upper die (1) and the lower die (2) to reduce the wear of the die during use and further improve the service life of the die. The wear-resistant sheet (9) is connected to the contact surface of the upper die (1) and the lower die (2) by bolts (10).

3. The bottom cover forming mold according to claim 1, characterized in that: The surface texture structures (5) of the male mold (4) and the female mold (3) are evenly distributed grooves or protrusions.

4. The bottom cover forming mold according to claim 1, characterized in that: The guide device (6) comprises a guide column (61) provided on an upper die (1) or a lower die (2) and a corresponding guide hole (62) provided on the other die, wherein the guide column (61) is inserted into the guide hole (62) to achieve precise guidance.

5. The bottom cover forming mold according to claim 1, characterized in that: The cooling system (7) comprises a cooling water channel (71) arranged inside the upper mold (1) and the lower mold (2), and an inlet and an outlet for introducing a cooling medium into the cooling water channel (71).

6. The bottom cover forming mold according to claim 1, characterized in that: An ejection mechanism (11) is provided at the bottom of the lower mold (2) for automatically ejecting the bottom cover from the mold after molding is completed. The ejection mechanism (111) comprises an ejector plate (111) provided in the lower mold (2), a space (112) is provided between the ejector plate (111) and the concave mold (3), an ejector pin (113) is provided at the top of the ejector plate (111), an ejector pin hole (114) is provided in the concave mold (3), and the ejector pin (113) passes through the ejector pin hole (114), a positioning rod (115) is provided at the bottom of the concave mold (3) and the top of the ejector plate (111), a telescopic spring (116) is fixed to the positioning rod (115), and the ejector plate (111) is telescopically extended in the space (112) by the telescopic spring (116), thereby completing the ejection of the injection mold.

7. The bottom cover forming mold according to claim 1, characterized in that: A through hole (12) is provided at the bottom of the lower die (2), and the through hole (12) is used to connect the output shaft of the air cylinder or the hydraulic cylinder, thereby driving the ejector plate (111) to move toward the female die (3).

8. The bottom cover forming mold according to claim 1, characterized in that: The male die (4), female die (3) and wear-resistant sheet (9) are all made of materials with high hardness and high wear resistance.

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