A mold with a strong pull-out mold structure

Abstract

The present invention provides a mold with a strong pulling demolding structure, comprising an upper mold and a lower mold, a cavity for forming a lower decorative panel body formed between the upper mold and the lower mold, and also comprising a limiting assembly, a core pulling assembly and a demolding assembly arranged on the lower side of the cavity, a demolding assembly is provided with an undercut on the side close to the core pulling assembly, and a fixing ear is formed on the bottom of the lower decorative panel body close to the side of the core pulling assembly. When the lower decorative panel body is formed in the cavity, the fixing ear rests on the undercut and limits the movement of the demolding assembly, and the core pulling assembly comprises a strong pulling member, which is used to bend the fixing ear and disengage the undercut. The strong pulling member cooperates with the limiting assembly to achieve the purpose of only bending the fixing ear by the strong pulling member, thereby preventing the overall displacement of the product from causing breakage and scratches on the product.

Description

Technical Field

[0001] The present invention relates to a mold, in particular to a mold with a strong pull-out mold structure. Background Art

[0002] Currently, a Chinese patent with publication number CN106313449B discloses an injection mold for manufacturing cantilever structure products, including a strong pulling mechanism for pulling the undercut cantilever to flip its end and an ejection mechanism for pushing out the undercut cantilever. The strong pulling mechanism pulls the undercut cantilever and causes it to elastically deform, so that the undercut is separated from the mold and then ejected by the ejection mechanism.

[0003] The above patent still has shortcomings. The strong pulling mechanism needs to bend the inverted cantilever as a whole when pulling the inverted cantilever to detach. When the inverted cantilever is short, it requires a large force to pull it hard, which can easily cause the entire product to shift, resulting in problems such as breakage or surface scratches, affecting the product's yield rate. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a mold with a strong pull-out mold structure, which has the function of limiting the overall movement of the product.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows: a mold with a strong pull-out mold structure, comprising an injection plate, an upper mold, a lower mold, an ejector plate and a bottom plate arranged in sequence, a cavity for molding the lower decorative plate body is formed between the upper mold and the lower mold, and a limit assembly is further included, which is arranged on the lower side of the cavity to limit the movement of the lower decorative plate body in directions other than the mold opening direction;

[0006] A core pulling assembly is arranged on one side of the cavity and is slidably arranged in the lower mold;

[0007] A demoulding assembly is slidably disposed in the lower mold to push the lower decorative plate body to move along the mold opening direction;

[0008] Among them, the demoulding component is provided with an undercut on one side close to the core pulling component, and a fixing ear is formed on the bottom of the lower decorative plate body close to the side of the core pulling component. When the lower decorative plate body is formed in the cavity, the fixing ear rests on the undercut and limits the movement of the demoulding component. The core pulling component includes a strong pulling piece, which is used to pull the fixing ear and make the fixing ear detach from the undercut.

[0009] Through the above technical means, after the injection molding of the lower trim panel body is completed, the fixing ear is detached through the core pulling component, and the strong pulling component is driven to bend the fixing ear to a certain angle, so that the undercut at the side end of the fixing ear is detached from the demoulding component, to prevent interference when the demoulding component is ejected from the lower trim panel body, and the movement of the lower trim panel body is restricted by the limiting component, so as to achieve the purpose of only bending the fixing ear by the strong pulling component, to prevent the overall displacement of the product from causing breakage and scratches on the product.

[0010] Preferably, the demoulding assembly includes an inclined ejector block and a straight ejector block, the undercut is arranged on the inclined ejector block, the side of the cavity is formed between the inclined ejector block, the straight ejector block and the upper mold, and an inclined ejector rod is fixedly arranged at the bottom of the inclined ejector block, the inclined ejector rod is fixedly connected to the ejection plate, and the ejection plate is used to drive the inclined ejector rod to move upward.

[0011] Through the above technical means, a cavity is formed by the inclined ejector block, the straight ejector block and the upper mold, so that the lower decorative panel body can be directly ejected when the injection molding is completed. The movement of the inclined ejector rod is controlled by the ejector plate to move the inclined ejector block along the inner inclined surface of the lower decorative panel body, thereby disengaging the inclined ejector block from the undercut and preventing the inclined ejector block from scratching or damaging the lower decorative panel body when ejecting the lower decorative panel body.

[0012] Preferably, the limiting assembly includes a limiting block, a limiting groove is provided on the top of the limiting block, the bottom of the cavity is formed between the limiting groove and the demolding assembly, and a straight ejector rod is also provided at the bottom of the limiting block, and the straight ejector rod is fixedly connected to the ejection plate.

[0013] Through the above-mentioned technical means, the bottom of the cavity is formed by the limit groove opened on the limit block and the demolding component, so that the bottom of the lower decorative panel body is formed in the limit groove after the injection molding is completed, thereby realizing the limiting function, and the straight ejector rod is fixedly connected to the ejection plate, so that the limit block participates in the ejection of the lower decorative panel body, so that the force on the lower decorative panel body is more uniform during ejection.

[0014] Preferably, the core pulling assembly includes a core pulling block and a power source, and the power source drives the core pulling block to move away from one side of the cavity, and a cavity for forming the fixed ear is formed between the core pulling block, the demoulding assembly and the lower mold.

[0015] Through the above technical means, the fixing ear is formed by the core-pulling block, so that the core-pulling block can be moved by a power source after the fixing ear is injected, thereby preventing the undercut at the bottom of the fixing ear from restricting the demoulding of the lower decorative panel body.

[0016] Preferably, a slide groove 1 is provided on the side of the core pulling block, a slide groove 2 is provided at the bottom of the slide groove 1, the strong pulling member includes a hook 1, a slider is fixedly provided at the tail of the hook 1, the hook 1 is slidably provided in the slide groove 1, and the slider is slidably provided in the slide groove 2.

[0017] Through the above technical means, the slider moves in the second slide groove. When the power source one drives the core pulling block to move, the core pulling block does not drive the hook one to move first. When the core pulling block is detached from the bottom buckle of the fixed ear, the slider is pulled through the second side wall of the slide groove and the fixed ear is bend, realizing the function of pulling the core first and then pulling hard, preventing the fixed ear from being unable to be demoulded.

[0018] Preferably, a plurality of micro oil holes are provided on the contact surface between the pull hook 1 and the fixed ear, an oil circuit is provided inside the pull hook 1, one end of the oil circuit is connected to the micro oil holes, and the other end is provided with an oil tank. When the power source 1 drives the core pulling block to move, the oil in the oil tank is sprayed out through the micro oil holes.

[0019] By means of the above technical means, lubricating oil is sprayed between the fixing ear and the draw hook 1 through the micro oil hole, thereby preventing the problem of scratching the surface of the fixing ear caused by excessive friction between the draw hook 1 and the fixing ear during demoulding, and at the same time increasing the service life of the draw hook 1.

[0020] Preferably, a sink groove is provided at the tail of the pull hook, the oil tank is arranged in the sink groove, an oil pressure plate is provided at the bottom of the sink groove, a pressure column is provided at one end of the oil pressure plate, the pressure column passes through the bottom of the sink groove and is exposed on the slider, the other end of the oil pressure plate is against the oil tank, a cover plate is provided on the side of the oil tank away from the oil pressure plate, the cover plate is against the oil tank, and the oil tank is made of variable material.

[0021] Through the above technical means, by setting a sink at the tail of the hook and placing the oil tank in the sink, and squeezing the oil cavity through the oil pressure plate, the function of automatic oil spraying when the slider contacts the two side walls of the slide groove is realized. The cover plate is used to support the oil tank to limit the movement of the oil tank, and at the same time make the installation of the oil tank more convenient.

[0022] Preferably, the oil tank is further provided with an oil inlet column near one end of the cover plate, and an oil inlet hole is further provided in the core pulling block. The oil inlet column is slidingly connected to the oil inlet hole, and a one-way valve is also fixedly provided in the oil inlet column, and the lubricating oil enters the oil tank through the oil inlet hole.

[0023] Through the above technical means, by extending the oil inlet column into the oil inlet hole, the oil circuit can still be maintained in a connected state when the slider moves. By setting a one-way valve in the oil inlet column, the lubricating oil can be prevented from flowing back when the oil tank is squeezed, thereby affecting the oil injection effect.

[0024] Preferably, a plurality of connecting plates are provided on the top of the lower decorative plate body, a through hole is opened in the middle of the connecting plates, a plurality of transverse blocks and a power source 2 are slidingly provided on the lower mold, and a cavity for forming the connecting plates and the through hole is formed between one end of the transverse block and the lower mold, and the power source 2 controls the movement of the transverse block.

[0025] Through the above technical means, the connecting piece and the through hole are formed by the transverse moving block, and the movement of the transverse moving block is controlled by the second power source, so that the connecting piece will not be interfered with by the transverse moving block during demoulding.

[0026] Preferably, a hook groove is provided between the connecting piece and the lower decorative panel body, and the hook groove sticks to the lower mold and limits the movement of the lower decorative panel body. A second pull hook is also slidably provided on the transverse block. When the lower decorative panel body is formed in the cavity, the second pull hook is provided on both sides of the connecting piece, and the second pull hook extends into the lower mold and forms a cavity with the lower mold.

[0027] Through the above technical means, the lower decorative panel body is pulled by the second pull hook and the lower decorative panel body is elastically deformed, so that the hook groove inside the connecting piece is separated from the lower mold, preventing the hook groove from being stuck in the lower mold during demolding, thereby causing the problem of being unable to demold. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of an embodiment;

[0029] Figure 2 A partial view of an embodiment;

[0030] Figure 3 It is a structural diagram of the core pulling component;

[0031] Figure 4 A partial cross-section of the core pulling assembly Figure 1 ;

[0032] Figure 5 Partial cross-section of the side roof assembly Figure 1 ;

[0033] Figure 6 Partial cross-section of the side roof assembly Figure 2 ;

[0034] Figure 7 A partial cross-section of the core pulling assembly Figure 2 ;

[0035] Figure 8 for Figure 7 A sectional view of part A;

[0036] Figure 9 It is a structural diagram of the limit component;

[0037] Figure 10 A partial diagram of the transverse block Figure 1 ;

[0038] Figure 11 A partial diagram of the transverse block Figure 2 ;

[0039] Figure 12Schematic diagram of the structure of the lower decorative panel body;

[0040] Figure 13 for Figure 12 Schematic diagram of part B.

[0041] Figure 1: Injection plate; 2: Upper mold; 3: Lower mold; 4: Ejector plate; 5: Bottom plate; 7: Core pulling block; 8: Oblique pull rod 1; 9: Oblique hole; 10: Oblique ejector block; 11: Straight ejector block; 12: Oblique ejector rod; 13: Straight ejector rod 2; 14: Slide 1; 15: Slide 2; 16: Draw hook 1; 17: Slider; 18: Limit block; 19: Limit groove; 20: Straight ejector rod 1; 21: Micro oil hole; 22: Oil circuit; 23: Oil tank; 24: Sink; 25: Oil pressure plate; 26: Pressure Oil hole; 27. Pressure column; 28. Cover plate; 29. ​​Oil inlet column; 30. Oil inlet hole; 31. One-way valve; 32. Transverse block; 33. Oblique pull rod 2; 34. Slide groove 3; 35. Slide groove 4; 36. Pull hook 2; 37. Side top groove; 38. Drive groove; 39. Side top block; 40. Inclined top surface; 41. Screw; 42. Gear; 43. Rack; 90. Lower decorative panel body; 91. Main beam; 92. Side beam; 93. Fixing ear; 94. Connecting hole; 95. Connecting piece; 96. Through hole. DETAILED DESCRIPTION

[0042] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0043] A mold with a strong pull-out mold structure includes an injection plate 1, an upper mold 2, a lower mold 3, an ejector plate 4, and a bottom plate 5 arranged in sequence. A cavity for molding a lower decorative plate body 90 is formed between the upper mold 2 and the lower mold 3. The lower decorative plate body 90 includes a main beam 91 and a side beam 92. The side beam 92 is provided with a fixing ear 93, and a connecting hole 94 is provided in the middle of the fixing ear 93. Undercuts are formed between the bottom and side of the side beam 92 and the fixing ear 93. The lower mold 3 is provided with:

[0044] The core pulling assembly includes a core pulling block 7 and a power source 1. The cavity between the core pulling block 7 and the lower mold 3 is used to form the fixed ear 93 and the connecting hole 94. The power source 1 includes an oblique pulling rod 1 8 fixedly connected to the upper mold 2. The core pulling block 7 is slidably connected to the lower mold 3 and is provided with an oblique hole 9. The oblique pulling rod 1 8 is slidably connected to the oblique hole 9. When the upper mold 2 and the lower mold 3 are separated, the oblique pulling rod 1 8 drives the core pulling block 7 to move away from the cavity and away from the demoulding track of the fixed ear 93 and the connecting hole 94.

[0045] The demoulding assembly includes an inclined ejector block 10 and a straight ejector block 11. The inclined ejector block 10 is arranged on the lower side of the straight ejector block 11 and forms the inner side of the side beam 92. The side of the cavity is formed between the inclined ejector block 10, the straight ejector block 11 and the upper mold 2. When the lower decorative plate body 90 is formed, the inclined ejector block 10 is stuck in the undercut at the side end of the fixed ear 93. An inclined ejector rod 12 is fixedly provided at the bottom of the inclined ejector block 10, and a second straight ejector rod 13 is provided at the bottom of the straight ejector block 11. The second straight ejector rod 13 and the inclined ejector rod 12 are both fixedly connected to the ejection plate 4. The ejection plate 4 is used to drive the inclined ejector rod 12 and the straight ejector rod to move upward;

[0046] A chute 14 is provided on the side of the core pulling block 7, a chute 2 15 is provided at the bottom of the chute 14, a draw hook 16 is slidably provided in the chute 14, a slider 17 is fixedly provided at the tail end of the draw hook 16, and the slider 17 is slidably provided in the chute 2 15. When the inclined pull rod 18 drives the core pulling block 7 to move, the core pulling block 7 first breaks away from the demoulding track of the fixed ear 93 and the connecting hole 94. When the side wall of the chute 2 15 abuts against the slider 17, the core pulling block 7 drives the draw hook 16 to move and pry the fixed ear 93, so that the undercut at the side end of the fixed ear 93 breaks away from the ejection track of the inclined ejector block 10, thereby preventing the inclined ejector rod 12 from abutting against the undercut when moving, causing the fixed ear 93 to deform and break.

[0047] The limiting assembly includes a limiting block 18, which is arranged on the lower side of the side beam 92. A limiting groove 19 is opened on the top of the limiting block 18. The limiting groove 19 and the bottom surface of the inclined ejector block 10 form the bottom of the side beam 92. When the bottom of the side beam 92 is injection molded, the side end of the limiting groove 19 abuts against the side surface of the bottom of the side beam 92, thereby limiting the movement of the lower decorative panel body 90 in other directions except the mold opening direction. A straight ejector rod 20 is also provided at the bottom of the limiting block 18. The straight ejector rod 20 is fixedly connected to the ejection plate 4. When the lower decorative panel body 90 needs to be demolded, the ejection plate 4 moves toward the mold opening direction and drives the straight ejector rod 20 to move, thereby ejecting the lower decorative panel body 90 from the cavity.

[0048] The contact surface between the hook 16 and the fixed ear 93 is provided with a plurality of micro oil holes 21, an oil path 22 is provided in the hook 16, the oil path 22 end is connected to the micro oil hole 21, and the other end is provided with an oil tank 23, a sink 24 is provided at the tail of the hook, the oil tank 23 is provided in the sink 24, an oil pressure plate 25 is provided at the bottom of the sink 24, and an oil pressure hole 26 is also provided at the bottom of the sink 24. A pressure column 27 is provided on one side of the oil pressure plate 25 near the oil pressure hole 26, and the pressure column 27 passes through the oil pressure hole 26 and is exposed to the slider 17, and the oil tank 23 is away from A cover plate 28 is provided on one side of the oil pressure plate 25. The cover plate 28 presses against the oil tank 23 and is connected to the hook 16 by screws. The oil tank 23 is made of rubber material. When the core pulling block 7 moves and pulls the hook 16, the side wall of the slide groove 15 presses against the slider 17 and pushes the pressure column 27 into the oil pressure hole 26. At this time, the oil pressure plate 25 squeezes the oil tank 23 to compress and deform the oil tank 23, so that the lubricating oil in the oil tank 23 is sprayed from the micro oil hole 21 through the oil passage 22 between the hook 16 and the fixing ear 93, thereby achieving a lubrication effect.

[0049] Oil inlet columns 29 are provided at both ends of the oil bin 23, and an oil inlet hole 30 is also provided in the core pulling block 7. The oil inlet column 29 near the end of the cover plate 28 is slidingly connected to the oil inlet hole 30, and the oil inlet column 29 near the end of the oil circuit 22 is slidingly connected to the oil circuit 22. A one-way valve 31 is also fixedly provided in the oil inlet column 29 near the cover plate 28. The lubricating oil enters the oil bin 23 through the oil inlet hole 30. By extending the oil inlet column 29 into the oil inlet hole 30, the oil circuit 22 can still be maintained in a connected state when the slider 17 moves. By arranging a one-way valve 31 in the oil inlet column 29, the lubricating oil can be prevented from flowing back when the oil bin 23 is squeezed, thereby affecting the oil injection effect.

[0050] The main beam 91 is also provided with a number of connecting pieces 95, and a through hole 96 is opened in the middle of the connecting piece 95. An undercut is also formed between the connecting piece 95 and the main beam 91. A number of transverse blocks 32 and a power source 2 are slidingly provided on the lower mold 3. The power source 2 includes an oblique pull rod 2 33. The oblique pull rod 2 33 is fixedly connected to the upper mold 2. A cavity for forming the connecting piece 95 and the through hole 96 is formed between one end of the transverse block 32 and the lower mold 3. A convex block for forming an undercut between the connecting piece 95 and the main beam 91 is provided on the lower mold 3. A slide groove 34 and a slide groove 4 35 are opened on the transverse block 32. The slide groove 3 34 is provided with a convex block for forming an undercut between the connecting piece 95 and the main beam 91. The sliding is provided with a second hook 36, which is U-shaped, with one end extending into the lower mold 3 and forming a cavity with the lower mold 3, and the other end extending into the fourth slide groove 35. The second hook 36 extends into the lower mold 3 and is arranged on both sides of the connecting piece 95 on one side. When the lower decorative panel body 90 needs to be demolded, the upper mold 2 is separated from the lower mold 3 to make the oblique pull rod 2 33 drive the transverse block 32 to move, thereby bending the main beam 91 through the second hook 36, so that the undercut between the connecting piece 95 and the main beam 91 is separated from the lower mold 3, preventing the connecting piece 95 from being stuck in the undercut groove in the lower mold 3 during demolding, thereby causing the problem of being unable to demold.

[0051] A side top groove 37 and a drive groove 38 are also provided in the pull hook 16, and the drive groove 38 is communicated with the side top groove 37. A side top assembly is also provided in the side top groove 37, and the side top assembly includes a side top block 39 and a power source three. The side top block 39 is a square block, and the side top groove 37 is a square groove. The side top block 39 is arranged at the side end of the fixed ear 93 and is slidingly connected to the side top groove 37. The side top block 39 also has an inclined top surface 40. The power source three drives the side top block 39 to extend and retract the side top groove 37. The power source three includes a screw 41, a gear 42 and a rack 43. The screw 41 is threadedly connected to the side top block 39 and is rotatably connected to the side top groove 37. The gear 42 is sleeved on the outside of the screw 41 and fixed to the screw 41. The rack 43 meshes with the gear 42. One end of the rack 43 is connected to the lower The mold 3 is fixedly connected, and the other end extends into the drive groove 38. When the hook 16 moves, the rack 43 is pulled out from the drive groove 38 and drives the gear 42 to rotate. The gear 42 drives the screw 41 to rotate and pushes the side top block 39 out of the side top groove 37. When the fixed ear 93 is bent, the end face of the hook 16 cannot completely fit the fixed ear 93, and the fit between the end face of the hook 16 and the end face of the fixed ear 93 will be converted into the fit between the corner of the hook 16 and the end face of the fixed ear 93. The side top block 39 is pushed out by the power source three, and the inclined top surface 40 is pressed against the side of the fixed ear 93 away from the corner of the hook 16, thereby increasing the force area between the hook 16 and the fixed ear 93, making the force on the fixed ear 93 more uniform, and reducing the risk of wear or breakage of the fixed ear 93.

[0052] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A mold with a strong pull-out mold structure, comprising an injection molding plate (1), an upper mold (2), a lower mold (3), an ejection plate (4) and a bottom plate (5) arranged in sequence, wherein a cavity for molding a lower decorative plate body (90) is formed between the upper mold (2) and the lower mold (3), and the mold is characterized by: It also includes a limiting component, which is arranged on the lower side of the cavity and is used to limit the movement of the lower decorative plate body (90) in directions other than the mold opening direction; A core pulling assembly is arranged on one side of the cavity and is slidably arranged in the lower mold (3); A demoulding assembly is slidably arranged in the lower mold (3) to push the lower decorative plate body (90) to move along the mold opening direction; The demoulding assembly is provided with an undercut on one side close to the core pulling assembly, and a fixing ear (93) is formed on the bottom of the lower decorative plate body (90) close to the side of the core pulling assembly. When the lower decorative plate body (90) is formed in the cavity, the fixing ear (93) abuts against the undercut and limits the movement of the demoulding assembly. The core pulling assembly includes a strong pulling piece, which is used to pull the fixing ear (93) and make the fixing ear (93) separate from the undercut.

2. The mold with a strong pull-out mold structure according to claim 1, characterized in that: The demoulding assembly includes an inclined ejector block (10) and a straight ejector block (11), the undercut is arranged on the inclined ejector block (10), the side of the cavity is formed between the inclined ejector block (10), the straight ejector block (11) and the upper mold (2), an inclined ejector rod (12) is fixedly arranged at the bottom of the inclined ejector block (10), the inclined ejector rod (12) is fixedly connected to the ejection plate (4), and the ejection plate (4) is used to drive the inclined ejector rod (12) to move upward.

3. The mold with a strong pull-out mold structure according to claim 1, characterized in that: The limiting assembly includes a limiting block (18), a limiting groove (19) is provided on the top of the limiting block (18), the bottom of the cavity is formed between the limiting groove (19) and the demoulding assembly, and a straight ejector rod (20) is also provided at the bottom of the limiting block (18), and the straight ejector rod (20) is fixedly connected to the ejection plate (4).

4. The mold with a strong pull-out mold structure according to claim 1, characterized in that: The core pulling assembly includes a core pulling block (7) and a power source, wherein the power source drives the core pulling block (7) to move away from one side of the cavity, and a cavity for forming a fixed ear (93) is formed between the core pulling block (7), the demoulding assembly, and the lower mold (3).

5. The mold with a strong pull-out mold structure according to claim 4, characterized in that: The side of the core-pulling block (7) is provided with a slide groove (14), the bottom of the slide groove (14) is provided with a slide groove (15), the strong pulling member includes a hook (16), the tail of the hook (16) is fixed with a slider (17), the hook (16) is slidably set in the slide groove (14), and the slider (17) is slidably set in the slide groove (15).

6. The mold with a strong pull-out mold structure according to claim 5, characterized in that: A plurality of micro oil holes (21) are provided on the contact surface between the first draw hook (16) and the fixed ear (93), an oil circuit (22) is provided in the first draw hook (16), one end of the oil circuit (22) is connected to the micro oil holes (21), and the other end is provided with an oil tank (23). When the power source (1) drives the core pulling block (7) to move, the oil in the oil tank (23) is ejected through the micro oil holes (21).

7. The mold with a strong pull-out mold structure according to claim 6, characterized in that: A sink groove (24) is provided at the tail of the pull hook (16), and the oil bin (23) is arranged in the sink groove (24). An oil pressure plate (25) is provided at the bottom of the sink groove (24), and a pressure column (27) is provided at one end of the oil pressure plate (25). The pressure column (27) passes through the bottom of the sink groove (24) and is exposed on the slider (17). The other end of the oil pressure plate (25) is against the oil bin (23). A cover plate (28) is provided on the side of the oil bin (23) away from the oil pressure plate (25). The cover plate (28) is against the oil bin (23), and the oil bin (23) is made of a variable material.

8. The mold with a strong pull-out mold structure according to claim 7, characterized in that: An oil inlet column (29) is further provided at one end of the oil bin (23) near the cover plate (28), and an oil inlet hole (30) is further provided in the core pulling block (7). The oil inlet column (29) is slidably connected to the oil inlet hole (30), and a one-way valve (31) is further fixedly provided in the oil inlet column (29), so that lubricating oil enters the oil bin (23) through the oil inlet hole (30).

9. The mold with a strong pull-out mold structure according to claim 1, characterized in that: A plurality of connecting pieces (95) are also provided on the top of the lower decorative plate body (90), and a through hole (96) is opened in the middle of the connecting piece (95). A plurality of transverse blocks (32) and a second power source are slidingly provided on the lower mold (3). A cavity for forming the connecting piece (95) and the through hole (96) is formed between one end of the transverse block (32) and the lower mold (3), and the second power source controls the movement of the transverse block (32).

10. The mold with a strong pull-out mold structure according to claim 9, characterized in that: A hook groove is also provided between the connecting piece (95) and the lower decorative plate body (90), and the hook groove sticks to the lower mold (3) and limits the movement of the lower decorative plate body (90). A second hook (36) is also slidably provided on the transverse block (32). When the lower decorative plate body (90) is formed in the cavity, the second hook (36) is provided on both sides of the connecting piece (95), and the second hook (36) extends into the lower mold (3) and forms a cavity with the lower mold (3).

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