Convenient mold opening mechanism for motorcycle headlamp base mold

Abstract

The utility model provides a convenient mold opening mechanism for a motorcycle headlamp base mold, which comprises a lower mold body, an upper mold body, a mold top plate, two supporting side plates, a mold base, an insert, a lower injection molding mold blank and an upper injection molding mold blank, the edge of the top end of the lower mold body is provided with a second edge contact surface, the second edge contact surface is connected with the first edge contact surface so that the lower mold body and the upper mold body can be closed, and the edge surfaces of the two sides of the first edge contact surface are each composed of a first contact belt, a second contact belt and an inclined contact belt; the highest end and the lowest end of the inclined contact belt are integrally connected with the second contact belt and the first contact belt respectively; when the mold is demolded and opened, the split surfaces of the lower mold body and the upper mold body are larger, and an inclined height difference exists, so that the mold drawing of a finished product is facilitated, and the mold drawing efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and relates to a convenient mold opening mechanism for a motorcycle headlight base mold. Background Technique

[0002] When manufacturing a motorcycle headlight base, it is usually integrally injection molded using a mold. Since the motorcycle headlight base is relatively large in size, in order to facilitate its demolding, many current molds are designed with demolding components. For example, a two-way ejection mechanism for an electric vehicle headlight base mold disclosed in the existing patent No. CN219133133U. The utility model includes an upper mold for forming the headlight base and a lower mold for forming the headlight base. An injection part is provided above the upper mold for forming the headlight base. In the injection process of this technical solution, the molten material is injected into the cavity through the injection part. After the injection is completed, the mold is opened, and the upper mold for forming the headlight base and the lower mold for forming the headlight base are separated from each other. During the separation process, first, the upper ejection structure of the two-way ejection component ejects the upper surface of the plastic part, so that the plastic part is first separated from the upper mold for forming the headlight base, and then the lower ejection structure of the two-way ejection component ejects the lower surface of the plastic part to realize the upper and lower two-way ejection of the formed plastic part. By adopting step-by-step ejection, the ejection is more comprehensive and reasonable, the structure is compact, and the ejection effect is good.

[0003] However, it can be seen from the description and the drawing part in this document that the connection part between its upper mold and lower mold is flatly connected, while the motorcycle headlight base is a structure with an arc height. This kind of structure will cause a slope during mold opening, resulting in limited range during mold opening and inconvenient demolding. Therefore, we designed a convenient mold opening mechanism for a motorcycle headlight base mold. Summary of the Invention

[0004] The purpose of the utility model is to provide a convenient mold opening mechanism for a motorcycle headlight base mold to solve the problems raised in the above background technique.

[0005] The object of the utility model can be achieved by the following technical solutions: A convenient mold opening mechanism for a motorcycle headlight base mold, including a lower mold body, an upper mold body, a mold top plate, two support side plates, a mold base, an insert, a lower injection molding blank, and an upper injection molding blank. The mold base is bolted to the lower mold body through two support side plates. The mold top plate is installed at the top of the upper mold body, and the lower mold body and the upper mold body are combined and connected. A runner installation hole is provided at the center of the upper mold body. A hot pouring runner head is installed inside the runner installation hole. The hot pouring runner head is communicated with the gate of the upper injection molding blank through the pouring head. An injection nozzle connection seat is provided at the top of the hot pouring runner head. A first edge contact surface is provided at the edge of the bottom end of the upper mold body. A second edge contact surface is provided at the edge of the top end of the lower mold body. The second edge contact surface is connected to the first edge contact surface to make the lower mold body and the upper mold body close the mold. Both side edge surfaces of the first edge contact surface are composed of a first contact zone, a second contact zone, and an inclined contact zone. The highest end and the lowest end of the inclined contact zone are integrally connected to the second contact zone and the first contact zone respectively;

[0006] The lower injection molding blank and the upper injection molding blank are respectively assembled in the mold cavity of the lower mold body and the mold cavity of the upper mold body;

[0007] Two ejector pin slide seats are provided at the top side of the lower mold body. An ejector pin guide block is provided inside the two ejector pin slide seats. An ejector pin is provided inside each of the two ejector pin guide blocks. A center mold opening rod is provided between the two ejector pin slide seats.

[0008] In the above-mentioned convenient mold opening mechanism for a motorcycle headlight base mold, eight water inlet connectors are provided on the front surface of the upper mold body, and four water outlet connectors are provided on the back surface of the upper mold body. The four water outlet connectors are communicated with the eight water inlet connectors through the passage of the upper mold body. The purpose of this setting is to enable cooling water to enter through the eight water inlet connectors, flow inside the passage of the upper mold body, absorb the heat during the molding process of the mold product, and then quickly discharge the cooling water through the four water outlet connectors, so that the heat can be quickly taken away and the cooling effect can be improved.

[0009] In the above-mentioned convenient mold opening mechanism for a motorcycle headlight base mold, two positioning blocks are provided at the bottom of the front surface of the upper mold body. The two positioning blocks are connected to two notches of the lower mold body. The purpose of this setting is that the upper mold body can be quickly positioned at the lower mold body through the two positioning blocks, so that after the lower mold body and the upper mold body are closed, the lower injection molding blank and the upper injection molding blank can be accurately docked.

[0010] In the above-mentioned convenient mold opening mechanism for a motorcycle headlight base mold, locking seats are arranged around the periphery of the first edge contact surface, and the four locking seats are connected to the lock blocks around the second edge contact surface. The purpose of this setting is to lock the lower mold body and the upper mold body together after they are closed, so as to prevent the hot air pressure during the pouring process from causing a gap between the lower mold body and the upper mold body, resulting in defects in the lamp base product.

[0011] In the above-mentioned convenient mold opening mechanism for a motorcycle headlight base mold, guide link rods are arranged at the four corners of the top end of the lower mold body, and the four guide link rods pass through the four guide holes of the upper mold body and are connected to the mold top plate. The purpose of this setting is to make the connection between the upper mold body and the lower mold body have good guiding properties, facilitate rapid mold closing, and play a good role in use convenience.

[0012] In the above-mentioned convenient mold opening mechanism for a motorcycle headlight base mold, the number of inserts is multiple, and the multiple inserts are embedded inside the upper injection molding mold blank, and the tail ends of the inserts pass through the lower injection molding mold blank and are connected to the mold base. The purpose of this setting is to facilitate better forming of the lamp base, ensure the integrity and structural compactness of the lamp base, and facilitate better demolding treatment.

[0013] Compared with the prior art, the advantages of the convenient mold opening mechanism for a motorcycle headlight base mold of the present utility model are as follows: by arranging a first edge contact surface at the edge of the bottom end of the upper mold body and a second edge contact surface at the edge of the top end of the lower mold body, the second edge contact surface is connected to the first edge contact surface to close the lower mold body and the upper mold body, and both side edge surfaces of the first edge contact surface are composed of a first contact band, a second contact band, and an inclined contact band. The highest end and the lowest end of the inclined contact band are integrally connected to the second contact band and the first contact band respectively. In this way, when demolding and opening the mold, the splitting surface between the lower mold body and the upper mold body is larger, with an inclined height difference, which is convenient for the demolding of the finished product and increases the demolding efficiency. At the same time, two inclined ejector block slides are arranged on the side part of the top end of the lower mold body, inclined ejector guides are arranged inside the two inclined ejector block slides, inclined ejector rods are arranged inside both of the two inclined ejector guides, and a central mold opening rod is arranged between the two inclined ejector block slides, making the mold opening more convenient;

[0014] By arranging eight water inlet connectors on the front surface of the upper mold body and four water outlet connectors on the back surface of the upper mold body, the four water outlet connectors are communicated with the eight water inlet connectors through the passages of the upper mold body; cooling water can enter through the eight water inlet connectors, flow inside the passages of the upper mold body, absorb the heat during the molding process of the mold product, and then quickly discharge the cooling water through the four water outlet connectors, so that the heat can be quickly taken away and the cooling effect is improved. Description of the Drawings

[0015] Figure 1 This is a schematic three - dimensional structure diagram of a convenient mold - opening mechanism for a motorcycle headlight base mold of the present utility model.

[0016] Figure 2 This is a schematic diagram showing the separation of the lower die body and the upper die body of a convenient mold - opening mechanism for a motorcycle headlight base mold of the present utility model.

[0017] Figure 3 This is a schematic plan - view structure diagram of the lower die body of a convenient mold - opening mechanism for a motorcycle headlight base mold of the present utility model.

[0018] Figure 4 This is a schematic three - dimensional structure diagram of the upper die body of a convenient mold - opening mechanism for a motorcycle headlight base mold of the present utility model.

[0019] Figure 5 This is a convenient mold - opening mechanism for a motorcycle headlight base mold of the present utility model Figure 1 of the front - view structure diagram.

[0020] In the figure, 1. lower die body; 2. upper die body; 3. mold top plate; 4. support side plate; 5. mold base; 6. injection nozzle connecting seat; 7. water - outlet connecting head; 8. guiding connecting rod; 9. first edge contact surface; 901. first contact band; 902. second contact band; 903. inclined contact band; 10. second edge contact surface; 11. insert; 12. runner installation hole; 13. lower injection - molding die blank; 14. hot - pouring runner head; 15. inclined - ejector - block slide; 16. inclined - ejector - block guide; 17. inclined - ejector rod; 18. locking seat; 19. center mold - opening rod; 20. water - inlet connecting head; 21. positioning block; 22. upper injection - molding die blank. Detailed implementation manners

[0021] The following are specific embodiments of the present utility model and in combination with the attached drawings, the technical solutions of the present utility model are further described, but the present utility model is not limited to these embodiments.

[0022] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, a convenient mold - opening mechanism for a motorcycle headlight base mold of the present utility model;

[0023] Basic components of an injection mold: It includes the lower mold body 1, the upper mold body 2, the mold top plate 3, two supporting side plates 4, the mold base 5, the inserts 11, the lower injection molding die blank 13, and the upper injection molding die blank 22. The mold base 5 is bolted to the lower mold body 1 through two supporting side plates 4. The mold top plate 3 is installed at the top of the upper mold body 2, and the lower mold body 1 and the upper mold body 2 are connected by clamping. A runner installation hole 12 is provided at the center of the upper mold body 2. A hot pouring runner head 14 is installed inside the runner installation hole 12. The hot pouring runner head 14 is connected to the gate and the inlet of the upper injection molding die blank 22. An injection nozzle connection seat 6 is provided at the top of the hot pouring runner head 14. Four guiding link rods 8 are provided at the four corners of the top of the lower mold body 1. The four guiding link rods 8 pass through four guiding holes of the upper mold body 2 and are connected to the mold top plate 3.

[0024] Furthermore, to better enable the product to be formed and utilize the fitting gaps of the inserts for exhaust, ensuring that the plastic can be smoothly discharged when injected into the mold and avoiding the generation of bubbles or defects; the number of inserts 11 is multiple. The multiple inserts 11 are embedded inside the upper injection molding die blank 22, and the tails of the inserts 11 pass through the lower injection molding die blank 13 and are connected to the mold base 5.

[0025] Furthermore, to make the positioning of the upper mold body 2 and the lower mold body 1 precise and the connection firm, two positioning blocks 21 are provided at the bottom of the front surface of the upper mold body 2. The two positioning blocks 21 are connected to two notches of the lower mold body 1. Locking seats 18 are provided around the first edge contact surface 9. The four locking seats 18 are connected to the locking blocks around the second edge contact surface 10. Among them, the four locking seats 18 are located at the four edges of the first edge contact surface 9, and their specific positions can be determined according to the actual contact positions of the mold.

[0026] Embodiment 1: An edge of the bottom end of the upper mold body 2 is provided with a first edge contact surface 9, and an edge of the top end of the lower mold body 1 is provided with a second edge contact surface 10. The second edge contact surface 10 is connected to the first edge contact surface 9 to clamp the lower mold body 1 and the upper mold body 2. Both side edge surfaces of the first edge contact surface 9 are composed of a first contact band 901, a second contact band 902, and an inclined contact band 903. The highest and lowest ends of the inclined contact band 903 are integrally connected to the second contact band 902 and the first contact band 901 respectively. Among them, the second edge contact surface 10 is also composed of a first contact band 901, a second contact band 902, and an inclined contact band 903, and its dimensions are the same as those of the first contact band 901, the second contact band 902, and the inclined contact band 903 of the first edge contact surface 9.

[0027] This solution enables a larger splitting surface between the lower mold body 1 and the upper mold body 2 during demolding and opening, with an inclined height difference, thus facilitating the demolding of the finished product and increasing the demolding efficiency.

[0028] On the basis of Embodiment 1, in order to make mold opening more convenient; two lifter slide seats 15 are provided on the top side of the lower mold body 1. A lifter guide block 16 is arranged inside the two lifter slide seats 15. A lifter rod 17 is arranged inside each of the two lifter guide blocks 16. A central mold opening rod 19 is arranged between the two lifter slide seats 15.

[0029] Furthermore, the length of the first contact band 901 is three times that of the second contact band 902, and the inclination angle of the inclined contact band 903 is the same as the inclination angle of the lifter slide seat 15.

[0030] Embodiment 2: The lower injection molding die base 13 and the upper injection molding die base 22 are respectively assembled in the mold cavities of the lower mold body 1 and the upper mold body 2. Eight water inlet connectors 20 are arranged on the front surface of the upper mold body 2. Four water outlet connectors 7 are arranged on the back surface of the upper mold body 2. The four water outlet connectors 7 are communicated with the eight water inlet connectors 20 through the passages of the upper mold body 2.

[0031] Cooling water enters through the eight water inlet connectors 20, flows inside the passages of the upper mold body 2, absorbs the heat during the molding process of the mold product, and then the cooling water is quickly discharged through the four water outlet connectors 7, so that the heat is quickly taken away, improving the cooling effect.

[0032] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the present invention belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. Convenient mold opening mechanism for motorcycle headlight base mold, including lower mold body (1), upper mold body (2), mold top plate (3), two support side plates (4), mold base (5), insert (11), lower injection molding mold embryo (13) and upper injection molding mold embryo (22). The mold base (5) is bolted to the lower mold body (1) through two support side plates (4). The mold top plate (3) is installed at the top of the upper mold body (2), and the lower mold body (1) and the upper mold body (2) are connected by clamping. A runner installation hole (12) is provided at the center of the upper mold body (2). A hot pouring runner head (14) is installed inside the runner installation hole (12). The hot pouring runner head (14) is communicated with the gate of the upper injection molding mold embryo (22) through a pouring head. An injection nozzle connection seat (6) is provided at the top of the hot pouring runner head (14). It is characterized in that, The edge of the bottom end of the upper die body (2) is provided with a first edge contact surface (9), and the edge of the top end of the lower die body (1) is provided with a second edge contact surface (10). The second edge contact surface (10) is connected to the first edge contact surface (9) to enable the lower die body (1) and the upper die body (2) to be closed. Both side edge surfaces of the first edge contact surface (9) are composed of a first contact strip (901), a second contact strip (902), and an inclined contact strip (903). The highest end and the lowest end of the inclined contact strip (903) are integrally connected to the second contact strip (902) and the first contact strip (901) respectively; The lower injection molding die blank (13) and the upper injection molding die blank (22) are respectively assembled in the mold cavities of the lower die body (1) and the upper die body (2); Two ejector slide blocks (15) are provided on the side of the top end of the lower die body (1). An ejector guide block (16) is arranged inside the two ejector slide blocks (15). An ejector rod (17) is arranged inside each of the two ejector guide blocks (16). A central mold opening rod (19) is arranged between the two ejector slide blocks (15).

2. The convenient mold opening mechanism for the motorcycle headlight base mold according to claim 1, wherein Eight water inlet connectors (20) are arranged on the front surface of the upper die body (2), and four water outlet connectors (7) are arranged on the back surface of the upper die body (2). The four water outlet connectors (7) are communicated with the eight water inlet connectors (20) through the passages of the upper die body (2).

3. The convenient mold opening mechanism for the motorcycle headlight base mold according to claim 1, wherein, Two positioning blocks (21) are arranged at the bottom of the front surface of the upper die body (2), and the two positioning blocks (21) are connected to two notches of the lower die body (1).

4. The convenient mold opening mechanism for the motorcycle headlight base mold according to claim 1, characterized in that, Locking seats (18) are arranged around the first edge contact surface (9), and the four locking seats (18) are connected to the lock blocks around the second edge contact surface (10).

5. The convenient mold opening mechanism for the motorcycle headlight base mold according to claim 1, wherein Four guiding link rods (8) are arranged at the four corners of the top end of the lower die body (1). The four guiding link rods (8) pass through four guiding holes of the upper die body (2) and are connected to the mold top plate (3).

6. The convenient mold opening mechanism for the motorcycle headlight base mold according to claim 1, characterized in that, The number of the inserts (11) is multiple. The multiple inserts (11) are inserted inside the upper injection molding die blank (22), and the tail ends of the inserts (11) pass through the lower injection molding die blank (13) and are connected to the mold base (5).

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