Door handle forming die

Abstract

The utility model discloses a door handle forming die which comprises an upper die and a lower die, and two forming cavities are arranged between the upper die and the lower die. The upper die comprises an upper forming block and inclined guide columns located on the two opposite sides of each forming cavity, and the upper forming block is provided with first forming parts located in the forming cavities. The lower die comprises a lower forming block and core-pulling forming blocks located on the two opposite sides of the forming cavities, the upper forming block is provided with second forming parts located in the forming cavities, each core-pulling forming block is provided with an inclined guide hole and a third forming part used for forming the hinge part of the door handle, and the inclined guide column is arranged in the inclined guide hole in a matched mode. Each core-pulling forming block is arranged in the lower die in a sliding manner; the two forming cavities are located between the upper forming block and the lower forming block, and each forming cavity is formed by splicing a first forming part, a second forming part and a third forming part. After an upper mold and a lower mold are opened, a door handle product can be demolded and taken out under the condition that the door handle product is not damaged, so that the technical effect of reliable molding is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of injection molding, specifically relating to a door handle molding mold. Background Technology

[0002] Hidden door handles are a commonly used handle structure in automobiles. They consist of an upper horizontal section, a lower horizontal section, and a hinge section. The upper and lower horizontal sections form the handle portion, and the hinge section is located at the end of the handle portion. The handle portion has a curved surface structure. In the current technology, the molding of door handles generally involves injecting injection fluid into the molding cavity between the upper and lower molds after they are closed and then cooling it to form the handle. Other details are then machined. However, this method has low molding efficiency and high cost. Moreover, the undercut structure on the door handle is easily damaged when the upper mold and the lower mold are opened. Therefore, there is an urgent need for improvement. Utility Model Content

[0003] This utility model is a door handle forming mold designed to solve the shortcomings of the above-mentioned technical problems.

[0004] The present invention provides a door handle forming mold, comprising an upper mold and a lower mold, wherein two forming cavities for forming door handles are provided between the upper mold and the lower mold;

[0005] The upper mold includes an upper molding block and inclined guide posts located on opposite sides of each molding cavity. The upper molding block is provided with a first molding part located in each molding cavity and used for molding the upper horizontal part of the door handle.

[0006] The lower mold includes a lower forming block and core-pulling forming blocks located on opposite sides of each forming cavity. The upper forming block is provided with a second forming part located in each forming cavity and used for forming the lateral lower part of the door handle. Each core-pulling forming block is provided with an oblique guide hole and a third forming part for forming the hinge part of the door handle. The oblique guide post is fitted in the oblique guide hole. Each core-pulling forming block is slidably arranged in the lower mold.

[0007] The two molding cavities are located between the upper molding block and the lower molding block, and each molding cavity is formed by the combination of a first molding part, a second molding part and a third molding part.

[0008] According to the door handle forming mold described above, the upper mold further includes an upper fixing plate and a first module. The upper fixing plate and the upper forming block are respectively fixed to the upper side and the lower side of the first module. The upper fixing plate is provided with a pouring gate, and the first module and the upper forming block are provided with a pouring channel communicating with the forming cavity and the pouring gate.

[0009] According to the door handle forming mold described above, the lower mold further includes a lower fixed plate, a second module, a support block, a top plate, and multiple ejector pins fixed on the top plate. The lower fixed plate is connected to the second module through the support block. The top plate is located between the lower fixed plate and the second module. The lower forming block is fixed on the upper side of the second module. The upper end of each ejector pin passes through the second module and the lower forming block in sequence, and its end face is flush with or higher than the inner bottom surface of the forming cavity. There is a space for the top plate to move between the upper side of the top plate and the lower side of the second module.

[0010] According to the door handle forming mold described above, at least one first guide rod is fixedly provided between the lower fixed plate and the second module, and the first guide rod passes through the first guide hole of the top plate.

[0011] According to the door handle forming mold described above, a limit post is fixed on the upper side of the top plate.

[0012] According to the door handle forming mold described above, at least one second guide rod is fixed on the second module. The second guide rod passes through the second guide hole in the top plate. A spring is sleeved on the second guide rod, and the two ends of the spring abut against the second module and the top plate, respectively.

[0013] According to the door handle forming mold described above, the lower side of the first module and the upper side of the second module are both provided with fixing grooves, and the upper forming block and the lower forming block are respectively fixed in each fixing groove.

[0014] According to the door handle forming mold described above, each core-pulling forming block is provided with a wedge block, and the lower side of the first module is provided with four wedge grooves corresponding to the positions of each wedge block. When the upper mold and the lower mold are closed, the wedge block is inserted into the wedge groove, the outer inclined surface of the wedge block and the inner inclined surface of the wedge groove are in contact with each other, and the wedge block is fitted in the side fitting groove of the upper forming block and the lower forming block.

[0015] According to the door handle forming mold described above, the upper side of the second module is provided with a sliding guide groove corresponding to the position of each inclined guide post. The core-pulling forming block is slidably set in the sliding guide groove. Limiting blocks are fixed on opposite sides of the sliding guide groove, and the limiting blocks and the inner bottom surface of the sliding guide groove form a limiting groove set along the length direction of the sliding guide groove, so that the guide block on the side of the core-pulling forming block is placed in the limiting groove. The inner bottom surface of each sliding guide groove is provided with a clearance hole with the same inclined axis as each inclined guide hole.

[0016] According to the door handle forming mold described above, multiple guide posts are fixed on the upper side of the second module, and mounting holes corresponding to the positions of each guide post are provided on the lower side of the first module. Guide sleeves are fixed in the mounting holes. When the upper mold and the lower mold are closed, the guide posts are inserted into the sliding sleeves.

[0017] The door handle forming mold designed in this utility model has the following effective effects:

[0018] 1. In this utility model, after the upper and lower molds are closed, the door handle is injection molded in each molding cavity by the cooperation of the third molding part of two core-pulling molding blocks, the first molding part of the upper molding block, and the second molding part of the lower molding block to form the door handle and the opposite sides of the hinge part. After the door handle is formed, the two core-pulling molding blocks slide outward, so that after the upper and lower molds are opened, the door handle can be demolded and removed without damage, thus achieving a reliable molding effect.

[0019] 2. Two door handles can be formed at once in one molding die, which further improves the molding production efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the molding die;

[0021] Figure 2 Full sectional view of the molding die (I);

[0022] Figure 3 Full sectional view of the molding die (II);

[0023] Figure 4 Full sectional view of the molding die (III);

[0024] Figure 5 An exploded view of the molding die;

[0025] Figure 6 This is a schematic diagram of the upper mold structure;

[0026] Figure 7 This is a schematic diagram of a molding die structure that lacks the first module;

[0027] Figure 8 A schematic diagram of the door handle structure (I);

[0028] Figure 9 Schematic diagram of door handle structure (II).

[0029] Labels: 1. Upper mold; 11. Upper fixing plate; 111. Sprue; 112. Gating channel; 12. First module; 121. Wedge groove; 122. Inner inclined surface; 13. Upper forming block; 131. First forming part; 14. Inclined guide post; 2. Lower mold; 21. Lower fixing plate; 22. Support block; 23. Second module; 231. Clearance hole; 24. Lower forming block; 241. Second forming part; 25. Top plate; 26. Ejector pin; 27. First guide rod; 28. Limiting post; 29. ​​Spring; 30. Second guide rod; 3. Forming cavity; 4. Fixing groove; 5. Core-pulling forming block; 51. Third forming part; 52. Wedge block; 521. Outer inclined surface; 53. Inclined guide hole; 100. Door handle; 102. Hinge part. Detailed Implementation

[0030] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model, and the specific and direct descriptions of related structures are merely for the convenience of understanding the present utility model; the specific features do not necessarily or directly limit the scope of implementation of the present utility model. Conventional choices and substitutions made by those skilled in the art under the guidance of the present utility model should all be considered within the scope of protection claimed by this utility model.

[0031] Example:

[0032] like Figures 1-9 As shown in the figure, the door handle molding die described in this embodiment includes an upper mold 1 and a lower mold 2. Two molding cavities 3 for molding the door handle 100 are provided between the upper mold 1 and the lower mold 2. The shape of the molding cavity 3 is set to conform to the shape of the door handle 100. When injection fluid is injected into the molding cavity 3 and cooled, the door handle 100 structure can be formed.

[0033] The upper mold 1 includes an upper fixing plate 11, a first module 12, an upper molding block 13, and inclined guide posts 14 located on opposite sides of each molding cavity 3. The upper molding block 13 is provided with a first molding part 131 located in each molding cavity 3 and used to mold the horizontal upper part of the door handle 100. The first molding part 131 is configured to conform to the outer surface of the horizontal upper part of the door handle 100. The upper fixing plate 11 and the upper molding block are respectively fixed to the upper and lower sides of the first module 12. The upper fixing plate 11 is provided with a pouring port 111. The first module 12 and the upper molding block 13 are provided with a pouring channel 112 communicating with the molding cavity 3 and the pouring port 111. The fixing plate, the first module 12, and the upper molding block 13 are fixed to each other by bolts. The second module 23 is provided with a T-shaped hole that mates with the T-shaped head of each inclined guide post 14. The T-shaped hole is inclined and the T-shaped head of the inclined guide post 14 is positioned in the T-shaped hole.

[0034] The lower mold 2 includes a lower fixing plate 21, a second module 23, a support block 22, a top plate 25, a lower forming block 24, multiple ejector pins 26 fixed on the top plate 25, and core-pulling forming blocks 5 located on opposite sides of each forming cavity 3. The upper forming block 13 is provided with a second forming part 241 located in each forming cavity 3 for forming the lower lateral part of the door handle 100. The second forming part 241 is configured to conform to the outer surface of the lower lateral part of the door handle 100. Each core-pulling forming block 5 is provided with an oblique guide hole 53 and a third forming part 51 for forming the hinge part 102 of the door handle 100. The third forming part 51 is a columnar structure, and the end face of the columnar structure is a core-pulling structure, so as to form the hinge part 102 of the door handle 100. 2. A hinged structure and an undercut structure are formed. The inclined guide post 14 is fitted into the inclined guide hole 53. Each of the core-pulling forming blocks 5 is slidably arranged in the lower mold 2. The lower fixed plate 21 is connected to the second module 23 through the support block 22. The top plate 25 is located between the lower fixed plate 21 and the second module 23. The lower forming block 24 is fixed on the upper side of the second module 23. The upper end of each ejector pin 26 passes through the second module 23 and the lower forming block 24 in sequence, and its end face is flush with or higher than the inner bottom surface of the forming cavity 3. There is a space for the top plate 25 to move between the upper side of the top plate 25 and the lower side of the second module 23. The lower fixed plate 21, the second module 23, the support block 22 and the lower forming block 24 are fixed to each other by bolts.

[0035] Preferably, each core-pulling block 5 is provided with a wedge block 52, and the lower side of the first module 12 is provided with four wedge grooves 121 corresponding to the positions of each wedge block 52. When the upper mold 1 and the lower mold 2 are closed, the wedge block 52 is inserted into the wedge groove 121, the outer inclined surface 521 of the wedge block 52 and the inner inclined surface 122 of the wedge groove 121 are in contact with each other, and the wedge block 52 fits in the side fitting grooves 6 of the upper molding block 13 and the lower molding block 24; the upper side of the second module 23 is provided with four wedge grooves 121 corresponding to the positions of each wedge block 52. The guide post 14 is located in the sliding guide groove 232. The core forming block 5 is slidably set in the sliding guide groove 232. Limiting blocks 233 are fixed on opposite sides of the sliding guide groove 232, and the limiting blocks 233 and the inner bottom surface of the sliding guide groove 232 form a limiting groove along the length of the sliding guide groove 232, so that the guide block 54 on the side of the core forming block 5 is placed in the limiting groove. Each sliding guide groove has a clearance hole 231 with the same oblique axis as each oblique guide hole 53 on its inner bottom surface.

[0036] In this embodiment, the upper mold 1 and the lower mold 2 approach each other to form a closed mold state, so that the first molding part 131, the second molding part 241 and the two third molding parts 51 at each point are assembled to form a molding cavity 3 that conforms to the shape of the door handle 100. Therefore, the two molding cavities 3 are located between the upper molding block 13 and the lower molding block 24, and the two molding cavities 3 are interconnected by the gating channel 112 in the lower molding block 24. At this time, the injection fluid can enter the two molding cavities 3 through the gating port 111 and the gating channel 112 to form the door handle 100. After cooling and opening the mold, the upper mold 1 and the lower mold 2 separate, the upper molding block 13 moves away from the lower molding block 24, and under the action of the inclined guide post 14 and the inclined guide hole 53, the core-pulling molding block 5 moves outward, causing the third molding part 51 to move away from the formed door handle 100. Then the top plate 25 moves upward, causing the ejector pin 26 to move upward and eject the door handle 100 product from the lower molding block 24 for demolding.

[0037] Preferably, at least one first guide rod 27 is fixedly disposed between the lower fixed plate 21 and the second module 23, and the first guide rod 27 passes through the first guide hole 251 of the top plate 25; at least one second guide rod 30 is fixed on the second module 23, and the second guide rod 30 passes through the second guide hole of the top plate 25. A spring 29 is sleeved on the second guide rod 30, and the two ends of the spring 29 abut against the second module 23 and the top plate 25 respectively, which makes the displacement of the top rod stable and reliable, and the spring 29 assists in resetting after the top plate 25 moves upward. The upward movement of the top plate 25 is generally driven by a hydraulic cylinder or a pneumatic cylinder.

[0038] Preferably, a limiting post 28 is fixed on the upper side of the top plate 25. When the top plate 25 moves upward, the limiting post 28 abuts against the lower side of the second module 23 to limit the upward movement distance of the top plate 25.

[0039] Preferably, a fixing groove 4 is provided on the lower side of the first module 12 and the upper side of the second module 23, and the upper molding block 13 and the lower molding block 24 are respectively fixed in each fixing groove 4. This arrangement makes the upper molding block 13 and the lower molding block 24 more stable and reliable after being fixed.

[0040] Preferably, the upper side of the second module 23 is fixed with multiple guide posts 31, and the lower side of the first module 12 is provided with mounting holes 123 corresponding to the positions of each guide post. A guide sleeve 124 is fixed in the mounting hole 123. When the upper mold 1 and the lower mold 2 are closed, the guide posts 31 are inserted into the sliding sleeve 124 so that the upper mold 1 and the lower mold 2 are positioned when opening or closing the mold, thereby improving the performance of the mold.

[0041] Finally, the two first molding parts 131 on the upper molding block 13 are both provided with contoured concave cavities, and the two second molding parts 241 on the lower molding block 24 are both composed of two contoured blocks spaced apart from each other. Each contoured block has a third molding part 51 on each of its opposite sides. The end faces of the two third molding parts 51 on one side of the lower molding block 24 form contoured protrusions, contoured grooves and contoured gaps, and the end faces of the two third molding parts 51 on the other side of the lower molding block 24 form contoured protrusions.

Claims

1. A door handle forming die comprising an upper die (1) and a lower die (2), characterized in that, Two forming cavities (3) for forming the door handle (100) are provided between the upper mold (1) and the lower mold (2). The upper mold (1) includes an upper molding block (13) and inclined guide posts (14) located on opposite sides of each molding cavity (3). The upper molding block (13) is provided with a first molding part (131) located in each molding cavity (3) and used for molding the upper side of the door handle (100). The lower mold (2) includes a lower molding block (24) and core-pulling molding blocks (5) located on opposite sides of each molding cavity (3). The lower molding block (24) is provided with a second molding part (241) located in each molding cavity (3) and used for molding the lower lateral side of the door handle (100). Each core-pulling molding block (5) is provided with an oblique guide hole (53) and a third molding part (51) for molding the hinge part (102) of the door handle (100). The oblique guide post (14) is fitted in the oblique guide hole (53). Each core-pulling molding block (5) is slidably disposed in the lower mold (2). The two molding cavities (3) are located between the upper molding block (13) and the lower molding block (24), and each molding cavity (3) is formed by the first molding part (131), the second molding part (241) and the third molding part (51) joining together; Among them, the two first molding parts (131) on the upper molding block (13) are both set with contoured concave cavities, and the two second molding parts (241) of the lower molding block (24) are both composed of two contoured blocks spaced apart from each other. Each contoured block has a third molding part (51) on each of its opposite sides. The end faces of the two third molding parts (51) on one side of the lower molding block (24) form contoured protrusions, contoured grooves and contoured gaps, and the end faces of the two third molding parts (51) on the other side of the lower molding block (24) form contoured protrusions. The lower mold (2) also includes a lower fixing plate (21), a second module (23), a support block (22), a top plate (25), and multiple ejector pins (26) fixed on the top plate (25). The lower fixing plate (21) is connected to the second module (23) through the support block (22). The top plate (25) is located between the lower fixing plate (21) and the second module (23). The lower forming block (24) is fixed on the upper side of the second module (23). The upper end of each ejector pin (26) passes through the second module (23) and the lower forming block (24) in sequence, and its end face is flush with or higher than the inner bottom surface of the forming cavity (3). There is a space for the top plate (25) to move between the upper side of the top plate (25) and the lower side of the second module (23). Limiting posts (28) are fixed on the upper side of the top plate (25); At least one second guide rod (30) is fixed on the second module (23). The second guide rod (30) passes through the second guide hole of the top plate (25). A spring (29) is sleeved on the second guide rod (30). The two ends of the spring (29) abut against the second module (23) and the top plate (25) respectively. At least one first guide rod (27) is fixedly provided between the lower fixed plate (21) and the second module (23), and the first guide rod (27) passes through the first guide hole of the top plate (25).

2. A door handle forming die according to claim 1, characterised in that The upper mold (1) also includes an upper fixing plate (11) and a first module (12). The upper fixing plate (11) and the upper forming block are respectively fixed to the upper and lower sides of the first module (12). The upper fixing plate (11) is provided with a pouring gate (111). The first module (12) and the upper forming block (13) are provided with a pouring channel (112) that communicates with the forming cavity (3) and the pouring gate (111).

3. A door handle forming die according to claim 2, wherein Fixing grooves (4) are provided on the lower side of the first module (12) and the upper side of the second module (23), and the upper molding block (13) and the lower molding block (24) are respectively fixed in each fixing groove (4).

4. A door handle forming die according to claim 2, wherein Each core-pulling block (5) is provided with a wedge block (52). The lower side of the first module (12) is provided with four wedge grooves (121) corresponding to the positions of each wedge block (52). When the upper mold (1) and the lower mold (2) are closed, the wedge block (52) is inserted into the wedge groove (121). The outer inclined surface (521) of the wedge block (52) and the inner inclined surface (122) of the wedge groove (121) fit together. The wedge block (52) is fitted into the side fitting groove of the upper molding block (13) and the lower molding block (24).

5. A door handle forming mould according to claim 4, characterised in that The upper side of the second module (23) is provided with a sliding guide groove corresponding to the position of each inclined guide post (14). The core forming block (5) is slidably set in the sliding guide groove. Limiting blocks are fixed on opposite sides of the sliding guide groove, and the limiting blocks and the inner bottom surface of the sliding guide groove form a limiting groove set along the length of the sliding guide groove, so that the guide block on the side of the core forming block (5) is placed in the limiting groove. Each sliding guide groove has a clearance hole (231) with the same inclined axis as each inclined guide hole (53) on its inner bottom surface.

6. A door handle forming mold according to claim 2, wherein The upper side of the second module (23) is fixed with multiple guide posts, and the lower side of the first module (12) is provided with mounting holes corresponding to the positions of each guide post. A guide sleeve is fixed in the mounting hole. When the upper mold (1) and the lower mold (2) are closed, the guide post is inserted into the sliding sleeve.

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