A mold frame convenient for demoulding

Abstract

The utility model discloses a mold frame that is easy to demould, including an upper mold base, a lower mold base, a guide column and an inclined top core pulling assembly. The upper mold base is provided with a cavity at the bottom, and a core is provided at the top of the lower mold base. A molding cavity for accommodating the shape of a plastic product is formed between the core and the cavity. The inclined top core pulling assembly includes an inclined top core pulling block, an inclined rod, a pressure block and a limit block. In the demoulding process of the utility model, when the upper mold base rises and moves under the action of an external force, the inclined rod of the inclined top core pulling assembly can be driven to rise at the same time. Since the inclined rod is connected to the bottom of the upper mold base and is located in an inclined groove, the inclined top core pulling block is driven to move along the slide groove toward one side of the core. At this time, the arc groove of the inclined top core pulling block can exert a certain thrust on the injection molded product, prompting the injection molded product to detach from the core, thereby realizing rapid demoulding; the setting of the buckle assembly can improve the mold opening stability of the mold frame and prevent the upper mold base from deviating during the mold opening process and damaging the product.

Description

Technical Field

[0001] The utility model relates to the field of mold frames, in particular to a mold frame which is easy to demould. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. In short, molds are tools used to make molded objects. They are composed of various parts and mainly realize the processing of the shape of the object by changing the physical state of the molded material. The mold frame is the support of the mold, and the mold frame is composed of various steel plates and matching parts. It is the supporting skeleton of the whole set of molds;

[0003] In the prior art, after the current mold completes the molding of the injection molded product and the mold opening, the injection molded product is generally lifted up from the bottom by an ejection cylinder to separate the injection molded product from the lower mold to facilitate the removal of the injection molded product. However, this method will cause the structure of the mold to become complicated and the manufacturing cost to be high. In addition, the conventional mold frame is prone to deviation during the mold opening process, which may cause damage to the injection molded product during demolding, thereby affecting the production quality of the product.

[0004] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a mold frame which has a simple structure, low manufacturing cost, precise mold opening and is easy to demould.

[0006] To achieve this purpose, the utility model adopts the following technical solutions: a mold frame that is easy to demould, including an upper mold base, a lower mold base, a guide column and an inclined top core pulling component;

[0007] The upper die seat is arranged on the top of the lower die seat, and the upper die seat is connected to the lower die seat through the guide column, and the upper die seat can be lifted and moved along the length direction of the guide column;

[0008] A cavity is provided at the bottom of the upper mold base, a core is provided at the top of the lower mold base, and a molding cavity for accommodating the shape of the plastic product is formed between the core and the cavity;

[0009] The inclined top core pulling assembly is arranged on the lower die seat at the side end of the core, and the inclined top core pulling assembly includes an inclined top core pulling block, an inclined rod, a pressure block and a limit block;

[0010] The two pressing blocks are respectively arranged on both sides of the lower die seat, and a slide groove is formed between the two pressing blocks. The inclined top core pulling block is arranged in the slide groove and can slide along the direction of the slide groove.

[0011] An arc groove is provided on the side wall of the inclined top core pulling block close to the core, and the arc groove is used to abut against a part of the structure of the core;

[0012] The inclined top core pulling block is provided with an inclined groove, the inclined rod is arranged in the inclined groove, and the top of the inclined rod is connected to the upper die seat, and the inclined rod is used to push the inclined top core pulling block to slide along the direction of the slide groove as the upper die seat moves up and down;

[0013] A limiting groove is provided at the bottom of the inclined top core pulling block, the opening of the limiting groove faces the direction away from the core, and the limiting block is arranged in the limiting groove to limit the sliding stroke of the inclined top core pulling block.

[0014] By adopting the above technical solution, the mold frame for easy demoulding also includes an upper mold fixing plate, a lower mold fixing plate and a buckle assembly;

[0015] The upper die fixing plate is arranged on the top of the upper die base, the lower die fixing plate is arranged on the bottom of the lower die base, and the locking assembly includes a locking base, a locking block, a spring, a first pull rod and a second pull rod;

[0016] The button machine seat is arranged on the side wall of the upper die seat, and a first slideway and a second slideway are arranged vertically through the button machine seat, and a third slideway is arranged horizontally connected between the first slideway and the second slideway;

[0017] The locking block is arranged in the third slideway, and the locking block can move along the direction of the third slideway. A vertical through-groove is arranged on the locking block, one end of the first pull rod is connected to the lower mold fixing plate, and the other end of the first pull rod passes through the groove and is buckled with the top wall of the locking block;

[0018] One end of the second pull rod is connected to the upper mold fixing plate, and the other end of the second pull rod passes through the second slideway;

[0019] The spring is arranged at the side end of the third slideway away from the second pull rod, and the spring is used to apply elastic force to the locking block to push it in the direction of the second pull rod, so that the first pull rod and the locking block remain in a locked state.

[0020] By adopting the above-mentioned technical solutions, in the mold frame for easy demoulding, the bottom of the side wall where the locking block abuts against the second tie rod is provided with a first inclined surface, and the side wall of the second tie rod is provided with a second inclined surface;

[0021] The second inclined surface of the second pull rod abuts against the first inclined surface as the upper die seat rises, so as to generate a thrust for the locking block to move toward one side of the spring.

[0022] By adopting the above-mentioned technical solutions, in the mold frame for easy demoulding, the side wall of the first pull rod is provided with a third inclined surface, and the bottom edge of the locking block located on the first slideway is provided with a fourth inclined surface;

[0023] The third inclined surface is used to cause the locking block to generate a thrust to move toward the spring when it contacts the fourth inclined surface.

[0024] By adopting the above-mentioned technical solutions, in the mold frame that is easy to demould, the angle between the inclined groove and the horizontal direction is 60-80°.

[0025] By adopting the above-mentioned technical solutions, in the mold frame that is easy to demould, the length of the second tie rod is greater than the length of the first tie rod.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] The utility model discloses that during the demoulding process, when the upper mold base moves upward under the action of external force, the inclined rod of the inclined top core pulling assembly can be driven to move upward at the same time. Since the inclined rod is connected to the bottom of the upper mold base and is located in the inclined groove, the inclined top core pulling block is driven to move along the slide groove toward the side of the core. At this time, the arc groove of the inclined top core pulling block can exert a certain thrust on the injection molded product, prompting the injection molded product to separate from the core, thereby realizing rapid demoulding. When the demoulding is completed and the upper mold base is reset to the lower mold base, the inclined rod can push the inclined top core pulling block to move along the slide groove toward the side away from the core, avoiding the arc groove of the inclined top core pulling block from abutting against the core. The setting of the limit block can prevent the resetting movement stroke of the inclined top core pulling block from being too large and separating from the slide groove. The setting of the buckle assembly can improve the mold opening stability between the upper mold base and the lower mold base, avoiding the displacement of the upper mold base during the mold opening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0031] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the inclined top core pulling assembly of the utility model;

[0033] Figure 4 This is a schematic structural diagram of the inclined top core pulling assembly of the utility model from another perspective;

[0034] Figure 5 It is a schematic diagram of the explosion structure of the inclined top core pulling assembly of the utility model;

[0035] Figure 6 It is a cross-sectional schematic diagram of the inclined top core-pulling block of the utility model;

[0036] Figure 7 This is a schematic diagram of the structure of the button assembly of the utility model;

[0037] Figure 8 This is a structural schematic diagram of the latch assembly of the utility model from another perspective. DETAILED DESCRIPTION

[0038] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0040] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0041] like Figures 1 to 8As shown, the embodiment of the utility model provides a mold frame that is easy to demould, including an upper mold base 1, a lower mold base 2, a guide column 3 and a tilting top core pulling assembly 4;

[0042] The upper mold base 1 is arranged on the top of the lower mold base 2, and the upper mold base 1 and the lower mold base 2 are connected by the guide column 3. The upper mold base 1 can be raised and lowered along the length direction of the guide column 3; when the product in the mold needs to be demolded after forming, the upper mold base 1 can be lifted up under the action of external force and can move along the direction of the guide column 3 to improve the movement stability of the upper mold base 1 and avoid deviation.

[0043] A cavity 10 is provided at the bottom of the upper mold base 1, and a core 20 is provided at the top of the lower mold base 2. A molding cavity for accommodating the shape of a plastic product is formed between the core 20 and the cavity 10. When the plastic particles are heated and melted, they can be injected into the molding cavity of the mold through a nozzle. After cooling and solidification, the mold will open so that the product in the molding cavity can be demolded and taken out.

[0044] like Figures 3 to 6 As shown, the inclined top core pulling assembly 4 is arranged on the lower die base 2 at the side end of the core 20, and the inclined top core pulling assembly 4 includes an inclined top core pulling block 41, an inclined rod 42, a pressing block 43 and a limiting block 44;

[0045] The two pressing blocks 43 are respectively arranged on both sides of the lower die base 2, and a slide groove 430 is formed between the two pressing blocks 43. The inclined top core pulling block 41 is arranged in the slide groove 430 and can slide along the direction of the slide groove 430.

[0046] The side wall of the inclined top core pulling block 41 close to the core 20 is provided with an arc groove 410, and the arc groove 410 is used to abut against a part of the structure of the core 20;

[0047] The inclined top core pulling block 41 is provided with an inclined groove 411, the inclined rod 42 is arranged in the inclined groove 411, and the top of the inclined rod 42 is connected to the upper die seat 1, and the inclined rod 42 is used to push the inclined top core pulling block 41 to slide along the direction of the slide groove 430 as the upper die seat 1 moves up and down;

[0048] A limiting groove 412 is provided at the bottom of the inclined top core pulling block 41 , and the opening of the limiting groove 412 faces away from the core 20 . The limiting block 44 is provided in the limiting groove 412 to limit the sliding stroke of the inclined top core pulling block 41 .

[0049] When the upper mold base 1 moves upward under the action of external force during the demoulding process, the inclined rod 42 can be driven to move upward at the same time. Since the inclined rod 42 is located in the inclined groove 411, the inclined top core pulling block 41 is driven to move along the slide groove 430 toward the side of the core 20. At this time, the arc groove 410 of the inclined top core pulling block 41 can exert a certain thrust on the injection molded product, causing the injection molded product to separate from the core 20, thereby achieving rapid demoulding;

[0050] When demolding is completed and the upper mold base 1 is reset to the lower mold base 2, the inclined rod 42 can push the inclined top core pulling block 41 to move along the slide groove 430 in the direction away from the core 20, thereby preventing the arc groove 410 of the inclined top core pulling block 41 from abutting against the core 20; the setting of the limit block 44 can prevent the inclined top core pulling block 41 from having an excessive reset movement stroke and detaching from the slide groove 430.

[0051] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, further, it also includes an upper mold fixing plate 5, a lower mold fixing plate 6 and a buckle assembly 7;

[0052] The upper die fixing plate 5 is arranged at the top of the upper die base 1, the lower die fixing plate 6 is arranged at the bottom of the lower die base 2, and the locking assembly 7 includes a locking base 71, a locking block 72, a spring 73, a first pull rod 74 and a second pull rod 75;

[0053] The buckle machine seat 71 is arranged on the side wall of the upper die seat 1, and a first slideway 711 and a second slideway 712 are vertically connected in the buckle machine seat 71, and a third slideway 713 is horizontally connected between the first slideway 711 and the second slideway 712;

[0054] The locking block 72 is arranged in the third slideway 713, and the locking block 72 can move along the direction of the third slideway 713. A vertical through-groove 720 is provided on the locking block 72. One end of the first pull rod 74 is connected to the lower mold fixing plate 6, and the other end of the first pull rod 74 passes through the groove 720 and is buckled with the top wall of the locking block 72.

[0055] One end of the second pull rod 75 is connected to the upper mold fixing plate 5, and the other end of the second pull rod 75 passes through the second slideway 712;

[0056] The spring 73 is disposed at a side end of the third slide 713 away from the second pull rod 75 , and the spring 73 is used to apply elastic force to the locking block 72 to push it toward the second pull rod 75 , so that the first pull rod 74 and the locking block 72 remain in a locked state.

[0057] like Figure 7 and Figure 8 As shown, further, a first inclined surface 721 is provided at the bottom of the side wall where the locking block 72 abuts against the second pull rod 75, and a second inclined surface 751 is provided on the side wall of the second pull rod 75. The second inclined surface 751 of the second pull rod 75 abuts against the first inclined surface 721 as the upper die holder 1 rises, so as to generate a thrust for the locking block 72 to move toward the side of the spring 73;

[0058] The setting of the locking assembly 7 can improve the mold opening stability between the upper mold base 1 and the lower mold base 2, and prevent the upper mold base 1 from shifting during the mold opening process. Specifically, when the upper mold base 1 moves upward, it can simultaneously drive the second pull rod 75 to move upward. When the second pull rod 75 moves upward, it can overcome the thrust of the spring 73, prompting the locking block 72 to move toward the side of the spring 73, thereby achieving the unlocking between the first pull rod 74 and the locking block 72, thereby completing the separation between the upper mold base 1 and the lower mold base 2, and preventing the upper mold base 1 from shaking and shifting during the mold opening process and damaging the injection molded product.

[0059] Furthermore, the side wall of the first pull rod 74 is provided with a third inclined surface 741, and the bottom edge of the locking block 72 located at the first slideway 711 is provided with a fourth inclined surface 722, and the third inclined surface 741 is used to make the locking block 72 generate a thrust to move toward the side of the spring 73 when it abuts against the fourth inclined surface 722. When the upper die base 1 descends and resets to abut against the lower die base 2, the third inclined surface 741 of the first pull rod 74 can contact the fourth inclined surface 722 of the locking block 72, thereby pushing the locking block 72 to move toward the side of the spring 73, so that the first pull rod 74 passes through the locking block 72 to complete the buckling and locking.

[0060] like Figure 6 As shown, further, the angle α between the inclined groove 411 and the horizontal direction is 60-80°. In this embodiment, the angle α between the inclined groove 411 and the horizontal direction is 75°. The size of the angle α will directly affect the demoulding effect of the mold; specifically, a larger angle α will cause the mold to be blocked during demoulding, increasing the difficulty of demoulding; while a smaller angle α will cause excessive thrust, resulting in a decrease in the surface quality of the product after demoulding.

[0061] Furthermore, the length of the second pull rod 75 is greater than the length of the first pull rod 74 .

[0062] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A mold base that is easy to demould, characterized in that: Including upper die base, lower die base, guide column and inclined top core pulling assembly; The upper die base is arranged on the top of the lower die base, and the upper die base and the lower die base are connected by the guide column, and the upper die base can be lifted and moved along the length direction of the guide column; A cavity is provided at the bottom of the upper mold base, and a core is provided at the top of the lower mold base, and a molding cavity for accommodating the shape of the plastic product is formed between the core and the cavity; The inclined top core pulling assembly is arranged on the lower die base at the side end of the core, and the inclined top core pulling assembly includes an inclined top core pulling block, an inclined rod, a pressure block and a limit block; The two pressing blocks are respectively arranged on both sides of the lower die base, and a slide groove is formed between the two pressing blocks. The inclined top core pulling block is arranged in the slide groove and can slide along the direction of the slide groove; The side wall of the inclined top core pulling block close to the core is provided with an arc groove, and the arc groove is used to abut against a part of the structure of the core; The inclined top core pulling block is provided with an inclined groove, the inclined rod is provided in the inclined groove, and the top of the inclined rod is connected to the upper die base, and the inclined rod is used to push the inclined top core pulling block to slide along the direction of the slide groove as the upper die base moves up and down; A limiting groove is provided at the bottom of the inclined top core pulling block, the opening of the limiting groove faces away from the core, and the limiting block is provided in the limiting groove to limit the sliding stroke of the inclined top core pulling block.

2. The mold base for easy demoulding according to claim 1, characterized in that: It also includes an upper mold fixing plate, a lower mold fixing plate and a buckle machine assembly; The upper die fixing plate is arranged on the top of the upper die base, the lower die fixing plate is arranged on the bottom of the lower die base, and the latch assembly includes a latch base, a locking block, a spring, a first pull rod and a second pull rod; The buckle machine base is arranged on the side wall of the upper die base, and a first slideway and a second slideway are vertically connected in the buckle machine base, and a third slideway is arranged between the first slideway and the second slideway in a horizontal connection; The locking block is arranged in the third slideway and can move along the direction of the third slideway. A vertical through-slot is provided on the locking block. One end of the first pull rod is connected to the lower mold fixing plate, and the other end of the first pull rod passes through the slot and is buckled with the top wall of the locking block. One end of the second pull rod is connected to the upper mold fixing plate, and the other end of the second pull rod passes through the second slideway; The spring is provided at a side end of the third slideway away from the second pull rod, and the spring is used to apply elastic force to the locking block to push it toward the second pull rod, so as to maintain a locked state between the first pull rod and the locking block.

3. The mold base for easy demoulding according to claim 2, characterized in that: The bottom of the side wall of the locking block abutting against the second pull rod is provided with a first inclined surface, and the side wall of the second pull rod is provided with a second inclined surface; The second inclined surface of the second pull rod abuts against the first inclined surface as the upper die seat rises, so as to generate a pushing force for the locking block to move toward the spring.

4. The mold base for easy demoulding according to claim 3, characterized in that: The side wall of the first pull rod is provided with a third inclined surface, and the bottom edge of the locking block located on the first slideway is provided with a fourth inclined surface; The third inclined surface is used to cause the locking block to generate a thrust to move toward the spring when it contacts the fourth inclined surface.

5. The mold base for easy demoulding according to claim 1, characterized in that: The angle between the inclined groove and the horizontal direction is 60-80 degrees.

6. The mold base for easy demoulding according to claim 3, characterized in that: The length of the second pull rod is greater than that of the first pull rod.

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