Injection molding machining mold convenient to demold

Abstract

The utility model discloses an injection molding machining mold convenient to demold, which belongs to the technical field of molds and comprises a movable plate, an upper mold plate, a first mold core plate, a second mold core plate and a bottom plate, the movable plate is fixedly installed at the output end of the demolding mechanism, and the bottom plate is fixedly installed on the lower side base table. A plurality of mold cores for forming a fan-shaped groove are uniformly mounted on the lower sides of the first mold core plate and the second mold core plate at equal intervals; a plurality of cavities for forming a glue injection part are uniformly formed in the upper side of the bottom plate at equal intervals; a demolding mechanism is mounted on the moving plate, the upper mold plate, the first mold core plate, the second mold core plate and the bottom plate, the demolding mechanism comprises a moving assembly and a mold knocking assembly, the moving assembly is mounted on the moving plate, the first mold core plate and the second mold core plate, and the mold knocking assembly is mounted on the upper mold plate and the bottom plate. In this way, the moving assembly drives the first mold core plate to move, the first mold core plate pushes the mold knocking assembly to knock a glue injection part, and the glue injection part adhering to the bottom of the upper mold plate is knocked off.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection molding mold convenient for demolding. Background Art

[0002] When casting plastic parts with complex shapes, it is usually through the combination of multiple layers of templates with mold cores or grooves. The grooves and mold cores between the multiple layers of templates together form the molding cavity of the plastic part; during demolding, the demolding mechanism drives the multiple layers of templates to move in sequence for demolding.

[0003] For example, Chinese Patent CN221161335U discloses an injection mold. This mold forms a cavity through multiple layers of plates. During demolding, the top mold and the bottom mold open and close with each other, so that the cavity can be opened and closed, ensuring the normal progress of injection molding and product demolding.

[0004] However, when the workpiece is demolded, it is easy to adhere to the last layer of plate to be demolded, making it difficult to completely demold; at the same time, it is difficult to complete the demolding of the mold core in one time for injection molded parts with grooves inside.

[0005] Based on this, the utility model designs an injection molding mold convenient for demolding to solve the above problems. Summary of the Utility Model

[0006] Aiming at the above-mentioned disadvantages of the prior art, the utility model provides an injection molding mold convenient for demolding.

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0008] An injection molding mold convenient for demolding includes a moving plate, an upper template, a first mold core plate, a second mold core plate and a bottom plate;

[0009] The moving plate, the first mold core plate, the second mold core plate, the upper template and the bottom plate are arranged in sequence from top to bottom. Positioning rods are symmetrically and fixedly installed on the lower side of the moving plate, and the positioning rods are in limit sliding connection with the upper template, the first mold core plate, the second mold core plate and the bottom plate;

[0010] A plurality of mold cores for forming fan-shaped grooves are evenly installed at equal intervals on the lower sides of the first mold core plate and the second mold core plate, and a plurality of cavities for forming injection molded parts are evenly opened at equal intervals on the upper side of the bottom plate;

[0011] A demolding mechanism is installed on the moving plate, the upper template, the first mold core plate, the second mold core plate and the bottom plate. The demolding mechanism includes a moving component and a knocking component. The moving component is installed on the moving plate, the first mold core plate and the second mold core plate, and the knocking component is installed on the upper template and the bottom plate.

[0012] Furthermore, the mold core includes a fixed mold core, a movable groove, a movable mold core and a retracting assembly. The fixed mold core is fixedly installed at the bottom of the second mold core plate. A movable groove that passes through the fixed mold core and the second mold core plate is opened on the upper side of the fixed mold core. A side groove is opened on the side of the bottom of the movable groove. A movable mold core for fan-shaped groove forming is rotatably installed on the upper side of the side groove at the bottom of the movable groove; the retracting assembly is installed on the movable groove and the first mold core plate; the movable mold core is arranged to be fan-shaped, and the rotation center of the movable mold core and the movable groove coincides with the arc center of the movable mold core.

[0013] Furthermore, the folding assembly includes a connecting rod, a rotating rod and a moving block. The lower side of the moving mold core is rotatably connected to one end of the connecting rod, the other end of the connecting rod is rotatably connected to one end of the rotating rod, the other end of the rotating rod is rotatably connected to the moving block, the moving block is limited and slidably connected to the moving groove, and the top of the moving block passes through the second core mold plate and is fixedly connected to the bottom of the first core mold plate.

[0014] Furthermore, the moving assembly includes a cylinder, a through slot and a limit rod, the cylinder is fixedly mounted on the upper side of the moving plate, and the output end of the cylinder passes through the moving plate and is fixedly connected to the first core plate; a plurality of through slots are symmetrically opened on the first core plate, one end of the plurality of limit rods is symmetrically fixedly mounted on the upper side of the second core plate, and the limit rods are slidably connected to the through slots.

[0015] Furthermore, the moving assembly also includes a stopper, and the top of the limiting rod is fixedly mounted with the stopper, and the stopper abuts against the first core plate.

[0016] Furthermore, the knocking mold assembly includes a knocking assembly and a rotating assembly, the knocking assembly is installed on the upper mold plate and the bottom plate, and the rotating assembly is installed on the knocking assembly.

[0017] Furthermore, the knocking assembly includes a knocking rod, a receiving groove, a lower inclined plate and a rotating groove. The upper side of the bottom plate is symmetrically provided with an receiving groove for accommodating the knocking rod, the upper side of the knocking rod is symmetrically fixed with a lower inclined plate, and the upper template is symmetrically provided with a rotating groove for accommodating the lower inclined plate; the upper side of the lower inclined plate is hinged to the upper template in the rotating groove, and a torsion spring is sleeved on the hinge axis of the lower inclined plate and the receiving groove, and the two elastic legs of the torsion spring are respectively abutted against the lower inclined plate and the rotating groove.

[0018] Furthermore, the rotating assembly includes a straight rod and an upper inclined plate, the straight rod is fixedly installed on the top of the lower inclined plate, the straight rod passes through the first core plate and the second core plate, and the top of the straight rod is fixedly connected to one end of the upper inclined plate; the lower inclined plate and the upper inclined plate are both inclined inward.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] Inject plastic liquid into the cavity to form the injection molding part in the cavity. The interior of the injection molding part and the fan-shaped grooves are formed through the mold core. After molding, the moving plate drives the upper template, the first mold core plate, and the second mold core plate to move upward, thereby driving the mold core and the formed injection molding part away from the cavity on the upper side of the bottom plate to complete the bottom demolding. Subsequently, the moving assembly drives the first mold core plate to move upward. After the mold core disengages from the fan-shaped groove inside the injection molding part, the first mold core plate drives the second mold core plate to move through the moving assembly, thereby driving the mold core away from the interior of the injection molding part, thus completing the demolding of the mold core. Sequential demolding is achieved for the injection molding part with fan-shaped grooves inside, making the demolding more convenient. After the mold core disengages from the injection molding part, there is a situation where the injection molding part adheres to the bottom of the upper template. At this time, the moving assembly continues to drive the first mold core plate and the second mold core plate to move upward, and the knocking mold assembly is pushed by the first mold core plate to knock the injection molding part, thereby knocking off the injection molding part adhering to the bottom of the upper template and enabling all the injection molding parts to be completely separated from the mold. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Three-dimensional view of an injection molding mold for facilitating demolding according to the present invention Figure 1 ;

[0023] Figure 2 Front view of an injection molding mold for facilitating demolding according to the present invention;

[0024] Figure 3 Schematic diagram of the injection molding part and its connection structure;

[0025] Figure 4 Three-dimensional view of an injection molding mold for facilitating demolding according to the present invention Figure 2 ;

[0026] Figure 5 Three-dimensional view of an injection molding mold for facilitating demolding according to the present invention Figure 3 ;

[0027] Figure 6 Schematic diagram of the second mold core plate and its connection structure;

[0028] Figure 7 Schematic diagram of the moving block and its connection structure.

[0029] The reference numerals in the drawings respectively represent:

[0030] 1. Movable plate; 11. Positioning rod; 2. Upper template; 4. First core plate; 5. Second core plate; 6. Core; 61. Fixed core; 62. Moving groove; 63. Movable core; 64. Connecting rod; 65. Rotating rod; 66. Moving block; 7. Bottom plate; 71. Cavity; 8. Demolding mechanism; 81. Moving component; 811. Cylinder; 812. Through groove; 813. Limit rod; 814. Stop block; 82. Mold knocking component; 821. Knocking rod; 822. Accommodating groove; 823. Lower inclined plate; 824. Straight rod; 825. Upper inclined plate; 826. Rotating groove; 9. Glue injection part; 91. Sector-shaped groove. Specific embodiments

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] The "left", "right", "front", "rear", "upper" and "lower" mentioned in the following description are oriented in the perspective direction of the front view.

[0033] In some embodiments, please refer to the attached drawings of the specification Figures 1-4 A plastic injection mold for facilitating demolding includes a movable plate 1, an upper template 2, a first core plate 4, a second core plate 5 and a bottom plate 7.

[0034] The movable plate 1, the first core plate 4, the second core plate 5, the upper template 2 and the bottom plate 7 are arranged in sequence from top to bottom. Positioning rods 11 are symmetrically and fixedly installed on the lower side of the movable plate 1, and the positioning rods 11 are in limit sliding connection with the upper template 2, the first core plate 4, the second core plate 5 and the bottom plate 7.

[0035] A plurality of cores 6 for forming sector-shaped grooves 91 are evenly installed at equal intervals on the lower sides of the first core plate 4 and the second core plate 5, and a plurality of cavities 71 for forming the glue injection part 9 are evenly opened at equal intervals on the upper side of the bottom plate 7.

[0036] A demolding mechanism 8 is installed on the movable plate 1, the upper template 2, the first core plate 4, the second core plate 5 and the bottom plate 7. The demolding mechanism 8 includes a moving component 81 and a mold knocking component 82. The moving component 81 is installed on the movable plate 1, the first core plate 4 and the second core plate 5, and the mold knocking component 82 is installed on the upper template 2 and the bottom plate 7.

[0037] In this embodiment, when the injection molding mold for easy demoulding works normally, plastic liquid is injected into the cavity 71 to form the injection molded part 9 in the cavity 71, and the interior of the injection molded part 9 and the fan-shaped groove 91 are formed by the mold core 6; after molding, the movable plate 1 drives the upper mold plate 2, the first mold core plate 4 and the second mold core plate 5 to move upward, thereby driving the mold core 6 and the molded injection molded part 9 to separate from the cavity 71 on the upper side of the bottom plate 7, and completing the bottom demoulding; then the movable assembly 81 drives the first mold core plate 4 to move upward, and after the mold core 6 separates from the fan-shaped groove 91 inside the injection molded part 9, the first mold core plate 4 is moved by the movable assembly The component 81 drives the second core plate 5 to move, thereby driving the core mold 6 to separate from the inside of the glue injection part 9, thereby completing the demolding of the core mold 6; the glue injection part 9 with the fan-shaped groove 91 inside is demolded in turn, making demolding more convenient; after the core mold 6 separates from the glue injection part 9, the glue injection part 9 is adhered to the bottom of the upper mold plate 2. At this time, the moving component 81 continues to drive the first core plate 4 and the second core plate 5 to move upward, and pushes the knocking component 82 through the first core plate 4 to knock the glue injection part 9, thereby knocking off the glue injection part 9 adhered to the bottom of the upper mold plate 2, so that all the glue injection parts 9 are completely separated from the mold.

[0038] In some embodiments, Figures 1-7 As shown, as a preferred embodiment of the utility model, the mold core 6 includes a fixed mold core 61, a movable groove 62, a movable mold core 63 and a folding assembly, the fixed mold core 61 is fixedly installed at the bottom of the second mold core plate 5, the upper side of the fixed mold core 61 is provided with a movable groove 62 that passes through the fixed mold core 61 and the second mold core plate 5, the bottom side of the movable groove 62 is provided with a side groove, and the upper side of the side groove at the bottom of the movable groove 62 is rotatably installed with a movable mold core 63 for forming a fan-shaped groove 91; the folding assembly is installed on the movable groove 62 and the first mold core plate 4; the movable mold core 63 is set to be fan-shaped, and the rotation center of the movable mold core 63 and the movable groove 62 coincides with the arc center of the movable mold core 63;

[0039] The folding assembly includes a connecting rod 64, a rotating rod 65 and a moving block 66. The lower side of the moving mold core 63 is rotatably connected to one end of the connecting rod 64, the other end of the connecting rod 64 is rotatably connected to one end of the rotating rod 65, the other end of the rotating rod 65 is rotatably connected to the moving block 66, the moving block 66 is limitedly slidably connected to the moving groove 62, and the top of the moving block 66 passes through the second mold core plate 5 and is fixedly connected to the bottom of the first mold core plate 4;

[0040] The moving assembly 81 includes a cylinder 811, a through slot 812 and a limiting rod 813. The cylinder 811 is fixedly mounted on the upper side of the moving plate 1. The output end of the cylinder 811 passes through the moving plate 1 and is fixedly connected to the first core plate 4. The first core plate 4 is symmetrically provided with a plurality of through slots 812. One end of the plurality of limiting rods 813 is symmetrically fixedly mounted on the upper side of the second core plate 5. The limiting rods 813 are slidably connected to the through slots 812.

[0041] The moving component 81 further includes a stop block 814. A stop block 814 is fixedly installed at the top of the limit rod 813, and the stop block 814 abuts against the first die core plate 4;

[0042] The die knocking component 82 includes a knocking component and a rotating component. The knocking component is installed on the upper template 2 and the bottom plate 7, and the rotating component is installed on the knocking component;

[0043] The knocking component includes a knocking rod 821, a receiving groove 822, a lower inclined plate 823 and a rotating groove 826. Receiving grooves 822 for receiving the knocking rods 821 are symmetrically formed on the upper side of the bottom plate 7. Lower inclined plates 823 are symmetrically and fixedly installed on the upper side of the knocking rods 821. Rotating grooves 826 for receiving the lower inclined plates 823 are symmetrically formed on the upper template 2. The upper side of the lower inclined plate 823 is hinged to the upper template 2 in the rotating groove 826. A torsion spring is sleeved on the hinge shaft of the lower inclined plate 823 and the receiving groove 822, and the two elastic feet of the torsion spring abut against the lower inclined plate 823 and the rotating groove 826 respectively;

[0044] The rotating component includes a straight rod 824 and an upper inclined plate 825. A straight rod 824 is fixedly installed at the top of the lower inclined plate 823. The straight rod 824 passes through the first die core plate 4 and the second die core plate 5, and the top of the straight rod 824 is fixedly connected to one end of the upper inclined plate 825; both the lower inclined plate 823 and the upper inclined plate 825 incline inward.

[0045] In this embodiment, when the die core 6 and the demoulding mechanism 8 work normally, in the closed die state, the knocking rod 821 is located in the receiving groove 822, so as not to affect the closing of the die; after the injection molded part 9 is separated from the cavity 71; the air cylinder 811 drives the first die core plate 4 to move upward, thereby driving the moving block 66 to move upward. The moving block 66 drives the moving die core 63 to rotate through the connecting rod 64 and the rotating rod 65, so that the moving die core 63 is separated from the fan-shaped groove 91. During this process, the first die core plate 4 and the second die core plate 5 have no horizontal relative movement through the through groove 812 and the limit rod 813; after the moving die core 63 is separated from the fan-shaped groove 91, the stop block 814 contacts the first die core plate 4, and the air cylinder 811 drives the second die core plate 5 to move upward through the stop block 814 and the limit rod 813, thereby driving the fixed die core 61 and the moving die core 63 to be separated from the inside of the injection molded part 9. At this time, the injection molded part 9 only contacts the bottom of the upper template 2; the air cylinder 811 drives the first die core plate 4 and the second die core plate 5 to move upward. The first die core plate 4 pushes the upper inclined plate 825 to move. The upper inclined plate 825 drives the lower inclined plate 823 to rotate in the rotating groove 826 through the straight rod 824. The rotation of the lower inclined plate 823 drives the knocking rod 821 to rotate, and the injection molded part 9 is knocked by the knocking rod 821, so that the injection molded part 9 is separated from the upper template 2, completing the demoulding of the injection molded part 9; thus realizing the demoulding of the injection molded part 9 with a fan-shaped groove 91 inside for one time.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An injection molding die facilitating demolding, comprising a moving plate (1), an upper template (2), a first core plate (4), a second core plate (5) and a bottom plate (7), characterized in that: The moving plate (1), the first core plate (4), the second core plate (5), the upper template (2) and the bottom plate (7) are arranged in sequence from top to bottom. Positioning rods (11) are symmetrically and fixedly installed on the lower side of the moving plate (1), and the positioning rods (11) are in limiting sliding connection with the upper template (2), the first core plate (4), the second core plate (5) and the bottom plate (7); A plurality of cores (6) for forming fan-shaped grooves (91) are evenly installed at equal intervals on the lower sides of the first core plate (4) and the second core plate (5), and a plurality of cavities (71) for forming injection molded parts (9) are evenly opened at equal intervals on the upper side of the bottom plate (7); A demolding mechanism (8) is installed on the moving plate (1), the upper template (2), the first core plate (4), the second core plate (5) and the bottom plate (7). The demolding mechanism (8) includes a moving component (81) and a mold knocking component (82). The moving component (81) is installed on the moving plate (1), the first core plate (4) and the second core plate (5), and the mold knocking component (82) is installed on the upper template (2) and the bottom plate (7).

2. The injection molding die facilitating demolding according to claim 1, wherein The core (6) includes a fixed core (61), a moving groove (62), a moving core (63) and a closing component. The fixed core (61) is fixedly installed at the bottom of the second core plate (5). A moving groove (62) penetrating through the fixed core (61) and the second core plate (5) is opened on the upper side of the fixed core (61). Side grooves are opened on the bottom side of the moving groove (62). A moving core (63) for forming a fan-shaped groove (91) is rotatably installed on the upper side of the bottom side groove of the moving groove (62); The closing component is installed on the moving groove (62) and the first core plate (4); The moving core (63) is set to be fan-shaped, and the rotation center of the moving core (63) and the moving groove (62) coincides with the arc center of the moving core (63).

3. The injection molding die for easy demolding according to claim 2, characterized in that, The closing component includes a connecting rod (64), a rotating rod (65) and a moving block (66). One end of the moving core (63) is rotatably connected to one end of the connecting rod (64), the other end of the connecting rod (64) is rotatably connected to one end of the rotating rod (65), the other end of the rotating rod (65) is rotatably connected to the moving block (66), the moving block (66) is in limiting sliding connection with the moving groove (62), and the top of the moving block (66) passes through the second core plate (5) and is fixedly connected to the bottom of the first core plate (4).

4. The injection molding die facilitating demolding according to claim 3, characterized in that, The moving component (81) includes a cylinder (811), a through groove (812) and a limiting rod (813). The cylinder (811) is fixedly installed on the upper side of the moving plate (1), and the output end of the cylinder (811) passes through the moving plate (1) and is fixedly connected to the first core plate (4); A plurality of through grooves (812) are symmetrically opened on the first core plate (4), and one ends of a plurality of limiting rods (813) are symmetrically and fixedly installed on the upper side of the second core plate (5), and the limiting rods (813) are in limiting sliding connection with the through grooves (812).

5. The injection-molding processing mold facilitating demolding according to claim 4, wherein The moving component (81) further includes a stop block (814). The stop block (814) is fixedly installed at the top of the limit rod (813), and the stop block (814) abuts against the first die core plate (4).

6. The injection molding die facilitating demolding according to claim 5, characterized in that, The die knocking component (82) includes a knocking component and a rotating component. The knocking component is installed on the upper template (2) and the bottom plate (7), and the rotating component is installed on the knocking component.

7. The injection molding die facilitating demolding according to claim 6, wherein, The knocking component includes a knocking rod (821), a receiving groove (822), a lower inclined plate (823) and a rotating groove (826). The receiving grooves (822) for receiving the knocking rods (821) are symmetrically formed on the upper side of the bottom plate (7). The lower inclined plates (823) are symmetrically and fixedly installed on the upper sides of the knocking rods (821). The rotating grooves (826) for receiving the lower inclined plates (823) are symmetrically formed on the upper template (2). The upper sides of the lower inclined plates (823) are hinged to the upper template (2) in the rotating grooves (826). A torsion spring is sleeved on the hinge shaft of the lower inclined plate (823) and the receiving groove (822), and the two elastic feet of the torsion spring abut against the lower inclined plate (823) and the rotating groove (826) respectively.

8. The injection molding die for facilitating demolding according to claim 7, characterized in that The rotating component includes a straight rod (824) and an upper inclined plate (825). The straight rod (824) is fixedly installed at the top of the lower inclined plate (823). The straight rod (824) passes through the first die core plate (4) and the second die core plate (5), and the top of the straight rod (824) is fixedly connected to one end of the upper inclined plate (825). Both the lower inclined plate (823) and the upper inclined plate (825) are inclined inward.

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