Headlamp mask mold with back-off demolding mechanism

Abstract

The utility model provides a headlamp mask mould with an inverted demoulding mechanism, which belongs to the field of mould equipment and comprises a fixed mould seat plate, a core-pulling mechanism and an ejection mechanism, a positioning ring is mounted in the middle of the surface of the fixed mould seat plate, and a cavity fixing plate is mounted at the top of the fixed mould seat plate; two fixing blocks are installed on the surface of a mold core fixing plate, a first oil cylinder is fixedly installed on the surface of each fixing block, when the first oil cylinders contract, a core pulling guide block is driven to move towards the outer side of the mold core fixing plate, and the core pulling guide block drives a core pulling sliding block installed at the front end in a sliding mode to contract towards the interior of a mold core insert. By means of the design, the core-pulling sliding block in the mold can be pulled out before mold opening, interference is avoided when a product is demolded, therefore, parting lines cannot appear on the headlamp mask, and the attractiveness of the product is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould equipment field, concretely is big lamp face shield mould with inverted buckle type demoulding mechanism. BACKGROUND

[0002] In industrial production, the importance of mould is self-evident, especially for the production of plastic products, the mould is more important, and most of the plastic products used in people's production and life must be assisted by mould. The big lamp face shield of electric bicycle also needs mould to produce and manufacture, and the existing big lamp face shield mould of bicycle can directly eject the demoulding of the face shield in the production process, if the face shield has an inverted buckle, the parting line is easy to appear when the mould is opened, which affects the appearance of the product. SUMMARY

[0003] The utility model discloses a big lamp face shield mould with inverted buckle type demoulding mechanism, to solve the problem that the existing big lamp face shield mould of bicycle in the production process, its face shield demoulding directly ejects, if the face shield has an inverted buckle, the parting line is easy to appear when the mould is opened, which affects the appearance of the product.

[0004] To achieve the above object, the utility model provides the following technical scheme: a big lamp face shield mould with inverted buckle type demoulding mechanism, including fixed mould seat plate, core-pulling mechanism and ejector mechanism,

[0005] Among them: the surface middle part of fixed mould seat plate is installed with positioning ring, the top of fixed mould seat plate is installed with cavity fixed plate, the bottom of cavity fixed plate is equipped with movable mould seat plate, the top of movable mould seat plate both sides is installed with mould foot, the top of mould foot is installed with core fixed plate, the inside of cavity fixed plate is installed with cavity insert, the inside of core fixed plate is installed with core insert, and the cavity insert is connected with core insert.

[0006] The core-pulling mechanism includes two fixed blocks fixedly installed on the surface of the core fixed plate, the surface of the fixed block is fixedly installed with a first oil cylinder, the telescopic end of the first oil cylinder is connected with a core-pulling guide block, the front end of the core-pulling guide block is slidably installed with a core-pulling sliding block, the bottom of the core-pulling guide block is provided with a core-pulling pressing block, and the both sides of the core-pulling sliding block are slidably inserted in the inside of the core insert.

[0007] The ejector mechanism includes a second oil cylinder installed on both sides of the core fixed plate, the surface of the movable mould seat plate is installed with a bottom needle plate in the middle of the mould foot, the top of the bottom needle plate is installed with a face needle plate, the surface of the face needle plate is fixedly installed with a plurality of straight top rods, the top end of the straight top rod is installed with a straight top block, and the straight top block penetrates the surface of the core insert.

[0008] As one preferred scheme of the utility model, the top and one side of the core-pulling guide block are provided with wear-resistant plates.

[0009] As one preferred scheme of the utility model, the bottom end of the cavity fixing plate is provided with straight guide sleeves, and the cavity fixing plate is fixedly provided with guide columns around the periphery, which are inserted into the straight guide sleeves.

[0010] As one preferred scheme of the utility model, the side and bottom of the cavity fixing plate are provided with switch seats on the surface of the corresponding die feet, and the switch seats are provided with switch bump blocks on the surface, and one end of the needle plate is provided with a limit switch, which is located between the two switch bump blocks.

[0011] As one preferred scheme of the utility model, the surface of the movable die seat plate is fixedly provided with a limit column in the middle, which penetrates the surface of the needle plate and the face needle plate.

[0012] As one preferred scheme of the utility model, the top of the cavity insert is provided with a sprue bushing, and the middle of the face needle plate is provided with a single-joint ejector pin, which is inserted into the sprue bushing.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) Two fixed blocks are arranged on the surface of the cavity fixing plate, and the surface of the fixed block is fixedly provided with a first oil cylinder, when the first oil cylinder is retracted, the core-pulling guide block is driven to move outwardly from the cavity fixing plate, the core-pulling guide block drives the core-pulling slider slidingly arranged at the front end to retract into the cavity insert, so that the core-pulling slider is moved away from the undercut of the injection mold mask, the design can retract the core-pulling slider in the mold before mold opening, avoids interference when the product is demolded, so that the headlamp mask does not appear the mold parting line, and the appearance of the product is guaranteed.

[0015] (2) The ejection mechanism is arranged, the second oil cylinder is arranged on the two sides of the cavity fixing plate, the second oil cylinder is retracted, the face needle plate arranged at the top of the needle plate is driven to move into the cavity fixing plate, the plurality of straight ejector rods fixedly arranged on the surface of the face needle plate are driven to move, so that the straight top block at the top end of the straight ejector rod is ejected from the cavity insert, so that the injection-molded large wind mask is ejected from the mold, the ejection and mold opening are synchronous, the product is reliably retained in the front mold, after the product naturally shrinks, the undercut can be separated from the front mold, and the workpiece is convenient to take. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a disassembled structure schematic view of the utility model;

[0018] Figure 3 This is a schematic diagram of the core-pulling mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the guide post installation structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the second hydraulic cylinder mounting structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the straight push rod installation structure of this utility model;

[0022] Figure 7 This is a cross-sectional structural diagram of the present invention.

[0023] In the diagram: 1. Fixed mold base plate;

[0024] 2. Positioning circle;

[0025] 3. Cavity fixing plate; 31. Cavity insert; 4. Moving mold base plate; 5. Mold feet;

[0026] 6. Core fixing plate; 61. Core insert;

[0027] 7. Core-pulling mechanism; 71. Fixing block; 72. First hydraulic cylinder; 73. Core-pulling guide block; 74. Core-pulling slider; 75. Core-pulling pressure block;

[0028] 8. Ejection mechanism; 81. Second hydraulic cylinder; 82. Bottom needle plate; 83. Top needle plate; 84. Straight ejector rod; 85. Straight ejector block;

[0029] 9. Wear-resistant steel plate;

[0030] 10. Straight guide sleeve; 11. Guide post; 12. Switch base; 13. Switch contact block; 14. Limit switch; 15. Limit post; 16. Sprue sleeve; 17. Single-section ejector pin. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] Please see Figure 1 - Figure 7 A headlight cover mold with an inverted demolding mechanism includes: a fixed mold base plate 1, a core pulling mechanism 7, and an ejection mechanism 8;

[0033] Please see Figure 1 , Figure 7 A positioning ring 2 is installed in the middle of the surface of the fixed mold base plate 1. A cavity fixing plate 3 is installed on the top of the fixed mold base plate 1. A moving mold base plate 4 is provided at the bottom of the cavity fixing plate 3. Mold feet 5 are installed on both sides of the top of the moving mold base plate 4. A core fixing plate 6 is installed on the top of the mold feet 5. A cavity insert 31 is installed inside the cavity fixing plate 3. A core insert 61 is installed inside the core fixing plate 6. The cavity insert 31 and the core insert 61 are connected for mold closing.

[0034] In practical use: A cavity fixing plate 3 is installed on the top of the fixed mold base plate 1, and a moving mold base plate 4 is provided at the bottom of the cavity fixing plate 3. A core fixing plate 6 is installed on the top of the moving mold base plate 4 through the mold foot 5. A cavity insert 31 is installed inside the cavity fixing plate 3, and a core insert 61 is installed inside the core fixing plate 6. The mold closing between the cavity insert 31 and the core insert 61 facilitates injection molding.

[0035] Please see Figure 1 , Figure 2 , Figure 3 The core-pulling mechanism 7 includes two fixing blocks 71 fixedly installed on the surface of the core fixing plate 6. A first hydraulic cylinder 72 is fixedly installed on the surface of the fixing block 71. The telescopic end of the first hydraulic cylinder 72 is connected to a core-pulling guide block 73. A core-pulling slider 74 is slidably installed at the front end of the core-pulling guide block 73. A core-pulling pressure block 75 is provided at the bottom of the core-pulling guide block 73. The two sides of the core-pulling slider 74 are slidably inserted into the core insert 61.

[0036] In practical use: Two fixing blocks 71 are installed on the surface of the core fixing plate 6. A first hydraulic cylinder 72 is fixedly installed on the surface of the fixing block 71. When the first hydraulic cylinder 72 retracts, it drives the core-pulling guide block 73 to move outward of the core fixing plate 6. The core-pulling guide block 73 drives the core-pulling slider 74, which is slidably installed at the front end, to retract into the core insert 61, thereby causing the core-pulling slider 74 to move away from the undercut of the injection molded mask. This design can remove the core-pulling slider 74 from the mold before the mold is opened, avoiding interference when the product is demolded, thus preventing the parting line from appearing on the headlight mask and ensuring the aesthetics of the product.

[0037] Please see Figure 4 , Figure 5 , Figure 6 The ejection mechanism 8 includes a second hydraulic cylinder 81 installed on both sides of the core fixing plate 6. A bottom pin plate 82 is installed on the surface of the moving mold base plate 4 at the middle of the mold foot 5. A top pin plate 83 is installed on the top of the bottom pin plate 82. Multiple straight ejector rods 84 are fixedly installed on the surface of the top pin plate 83. A straight ejector block 85 is installed at the top of the straight ejector rod 84. The straight ejector block 85 penetrates the surface of the core insert 61.

[0038] In practical use: Second hydraulic cylinders 81 are installed on both sides of the core fixing plate 6. The retraction of the second hydraulic cylinders 81 drives the face pin plate 83 installed on the top of the bottom pin plate 82 to move into the core fixing plate 6. The face pin plate 83 drives multiple straight ejector rods 84 fixed on the surface to move accordingly, so that the straight ejector block 85 at the top of the straight ejector rod 84 is ejected from the inside of the core insert 61, thereby lifting the large wind mask after injection from the inside of the mold. The ejection and mold opening are carried out synchronously, so that the product is reliably retained in the front mold. After the product shrinks naturally, the undercut can be separated from the front mold, making it easy to remove the part.

[0039] Please see Figure 1 , Figure 3 Wear-resistant plates 9 are installed on the top and one side of the core-pulling guide block 73.

[0040] In practical use: Wear-resistant plates 9 are installed on the top and one side of the core-pulling guide block 73. When pulling the core, the core-pulling guide block 73 moves inside the core fixing plate 6 and the core insert 61 under the drive of the first oil cylinder 72. The wear-resistant plates 9 can reduce the wear of the core-pulling guide block 73 itself, thereby improving its service life.

[0041] Please see Figure 4 A straight guide sleeve 10 is installed around the bottom of the cavity fixing plate 3, and a guide post 11 is fixedly installed around the core fixing plate 6. The guide post 11 is inserted inside the straight guide sleeve 10.

[0042] In practical use: straight guide sleeves 10 are installed around the bottom of the cavity fixing plate 3, and guide pillars 11 are installed around the core fixing plate 6. During the mold opening and closing process of the cavity fixing plate 3 and the core fixing plate 6, the guide pillars 11 are inserted inside the straight guide sleeves 10 to ensure the stability of the mold opening and closing.

[0043] Please see Figure 1 Switch seats 12 are installed on the surfaces of the core fixing plate 6 and the corresponding bottom mold foot 5. Switch blocks 13 are installed on the surfaces of the two switch seats 12 respectively. A limit switch 14 is installed at one end of the bottom pin plate 82. The limit switch 14 is located between the two switch blocks 13.

[0044] In practical use: Switch seats 12 are installed on the surface of the mold feet 5 on one side and the bottom of the core fixing plate 6. Switch blocks 13 are installed on the surface of the two switch seats 12 respectively. A limit switch 14 is installed at one end of the bottom pin plate 82. When the second cylinder 81 pushes the bottom pin plate 82 out, the limit switch 14 moves upward. When it contacts the switch block 13 on one side of the core fixing plate 6, the second cylinder 81 stops working. When the second cylinder 81 drives the bottom pin plate 82 to reset, the limit switch 14 contacts the switch block 13 on the surface of the mold feet 5, the second cylinder 81 stops working, and the bottom pin plate 82 is in the reset state.

[0045] Please see Figure 7A limiting post 15 is fixedly installed in the middle of the surface of the moving mold base plate 4, and the limiting post 15 penetrates the surface of the bottom needle plate 82 and the front needle plate 83.

[0046] In practical use: a limiting post 15 is installed in the middle of the surface of the moving mold base plate 4. The limiting post 15 passes through the bottom needle plate 82 and the front needle plate 83, so that the bottom needle plate 82 and the front needle plate 83 remain stable during the lifting process.

[0047] Please see Figure 7 A sprue bushing 16 is installed on the top of the cavity insert 31, and a single-section ejector pin 17 is installed in the middle of the face pin plate 83. The single-section ejector pin 17 is inserted inside the sprue bushing 16.

[0048] In practical use: A sprue sleeve 16 is installed on the top of the cavity insert 31, and a single-section ejector pin 17 installed in the middle of the face pin plate 83 is inserted inside the sprue sleeve 16. When injection molding is required, the single-section ejector pin 17 is disengaged from the sprue sleeve 16, which makes it easy to pour the core insert 61 into the mold and facilitates the injection molding of the headlight cover.

[0049] Two fixing blocks 71 are installed on the surface of the core fixing plate 6. A first hydraulic cylinder 72 is fixedly installed on the surface of the fixing block 71. When the first hydraulic cylinder 72 retracts, it drives the core-pulling guide block 73 to move outward of the core fixing plate 6. The core-pulling guide block 73 drives the core-pulling slider 74, which is slidably installed at the front end, to retract into the core insert 61, thereby causing the core-pulling slider 74 to move away from the undercut of the injection molded mask. This design can remove the core-pulling slider 74 inside the mold before mold opening, avoiding interference when the product is demolded, thus preventing the headlight mask from having a parting line and ensuring the aesthetics of the product.

[0050] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A headlight cover mold with an inverted demolding mechanism, characterized in that, include: A fixed mold base plate (1) is provided with a positioning ring (2) installed in the middle of the surface of the fixed mold base plate (1). A cavity fixing plate (3) is installed on the top of the fixed mold base plate (1). A moving mold base plate (4) is provided at the bottom of the cavity fixing plate (3). Mold feet (5) are installed on both sides of the top of the moving mold base plate (4). A core fixing plate (6) is installed on the top of the mold feet (5). A cavity insert (31) is installed inside the cavity fixing plate (3). A core insert (61) is installed inside the core fixing plate (6). The cavity insert (31) and the core insert (61) are connected in mold closing. The core-pulling mechanism (7) includes two fixed blocks (71) fixedly installed on the surface of the core fixing plate (6). A first oil cylinder (72) is fixedly installed on the surface of the fixed block (71). The telescopic end of the first oil cylinder (72) is connected to a core-pulling guide block (73). A core-pulling slider (74) is slidably installed at the front end of the core-pulling guide block (73). A core-pulling pressure block (75) is provided at the bottom of the core-pulling guide block (73). The two sides of the core-pulling slider (74) are slidably inserted into the core insert (61). Ejection mechanism (8), the ejection mechanism (8) includes a second oil cylinder (81) installed on both sides of the core fixing plate (6), a bottom pin plate (82) is installed on the surface of the moving mold base plate (4) in the middle of the mold foot (5), a face pin plate (83) is installed on the top of the bottom pin plate (82), a plurality of straight ejector rods (84) are fixedly installed on the surface of the face pin plate (83), a straight ejector block (85) is installed on the top of the straight ejector rod (84), and the straight ejector block (85) penetrates the surface of the core insert (61).

2. A headlight cover mold with an inverted demolding mechanism according to claim 1, characterized in that: Wear-resistant plates (9) are installed on the top and one side of the core-pulling guide block (73).

3. A headlight cover mold with an inverted demolding mechanism according to claim 1, characterized in that: A straight guide sleeve (10) is installed around the bottom of the cavity fixing plate (3), and a guide post (11) is fixedly installed around the core fixing plate (6). The guide post (11) is inserted inside the straight guide sleeve (10).

4. A headlight cover mold with an inverted demolding mechanism according to claim 1, characterized in that: The core fixing plate (6) and the corresponding bottom mold foot (5) are both equipped with switch seats (12), and the surfaces of the two switch seats (12) are respectively equipped with switch blocks (13). One end of the bottom pin plate (82) is equipped with a limit switch (14), and the limit switch (14) is located between the two switch blocks (13).

5. A headlight cover mold with an inverted demolding mechanism according to claim 1, characterized in that: A limiting post (15) is fixedly installed in the middle of the surface of the moving mold base plate (4), and the limiting post (15) penetrates the surface of the bottom needle plate (82) and the front needle plate (83).

6. A headlight cover mold with an inverted demolding mechanism according to claim 1, characterized in that: The top of the cavity insert (31) is fitted with a sprue sleeve (16), and the middle of the face pin plate (83) is fitted with a single-section ejector pin (17), which is inserted inside the sprue sleeve (16).

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