Injection mold with positioning function for plastic mold

Abstract

The invention discloses an injection mold with a positioning function for a plastic mold, and relates to the technical field of plastic molds. The mold comprises a base, a supporting rod is fixedly connected to the side face of the base, a top plate is fixedly connected to one end of the supporting rod, an upper mold assembly is arranged at the bottom of the top plate, a lower mold assembly is arranged at the top of the base, a material injection pipe fixedly penetrates through the side face of the lower mold assembly, and a positioning device is arranged at the top of the base. The positioning device comprises a fixing plate. The movement force of the upper die assembly is matched with an inclined plate, a fixing rod, a spring and other assemblies in the positioning device, so that when the positioning plate moves to the position between the inclined plate and the base, the positioning plate cannot abut against the inclined plate any more, the bottom of the inclined plate is located on the top of the positioning plate, and therefore the fixing effect is achieved; and the effects that all the parts of the die can be accurately and mutually positioned during assembly, and the rejection rate is reduced are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic molds, and in particular relates to an injection mold for a plastic mold with a positioning function. Background Art

[0002] Injection molds for plastic molds with positioning functions are tools used to manufacture plastic products. They are designed to accurately position, fix and shape plastic materials during the injection molding process in order to produce plastic products of precise size and shape. These molds are usually composed of multiple parts, including mold bases, mold cores, mold cavities, etc., and have special structures that can ensure that the plastic material is correctly injected and fixed into shape.

[0003] According to the disclosed mold for plastic injection molding (publication number: CN 101108528 B), it includes: one or more injection ports for injecting plastic material containing metal particles, thereby injection molding a mold frame of a specified shape; a vibrator is arranged around the position where the flow of the plastic material injected through the injection port intersects, thereby inside the mold frame for plastic injection molding, during the molding process of the plastic injection molded product, the flow of the plastic material containing flaky powder composed of aluminum material and the like in the area where the flow intersects is vibrated by the vibrator to prevent the flaky aluminum powder from solidifying in an upright state, so that the entire surface of the injection molded product has a uniform metal texture. The above application cooperates with components such as the mold frame and the injection port, which makes it difficult to accurately position the various components relative to each other during assembly, thereby increasing the scrap rate and needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide an injection mold for a plastic mold with a positioning function. Through the movement force of the upper mold assembly and the mutual cooperation of the components such as the inclined plate, the fixing rod and the spring inside the positioning device, it is achieved that when the positioning plate moves between the inclined plate and the base, it will not interfere with the inclined plate, so that the bottom of the inclined plate is on the top of the positioning plate, thereby fixing it, so that the various components of the mold can be accurately positioned relative to each other during assembly, reducing the scrap rate, and solving the existing problems.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention relates to an injection mold for a plastic mold with a positioning function, including a base. A support rod is fixedly connected to the side of the base. One end of the support rod is fixedly connected to a top plate. An upper mold assembly is arranged at the bottom of the top plate. A lower mold assembly is arranged at the top of the base. A feeding pipe is fixedly penetrated through the side of the lower mold assembly. A positioning device is arranged at the top of the base. The positioning device includes a fixing plate. The bottom of the fixing plate is fixedly connected to the top of the base. A fixing rod penetrates through the side of the fixing plate. One end of the fixing rod is fixedly connected to a disc. The end of the fixing rod away from the disc is fixedly connected to an inclined plate. A hinge block one is fixedly connected to the side of the inclined plate. A hinge rod is hinged to the side of the hinge block one. The end of the hinge rod away from the hinge block one is hinged to a hinge block two. A telescopic rod is fixedly connected to the bottom of the upper mold assembly. The end of the telescopic rod away from the upper mold assembly is fixedly connected to a positioning plate. A pressing disc is fixedly connected to the bottom of the positioning plate.

[0006] Further, a spring is fixedly sleeved on the circumferential surface of the fixing rod. The end of the spring away from the disc is fixedly connected to the fixing plate. The inclined plate is fixedly connected to the disc through the fixing rod. Such a design can ensure that the various components of the mold can be accurately positioned relative to each other during assembly.

[0007] Further, the hinge block two is slidably connected to the side of the fixing plate. A gap is provided between the inclined plate and the base. Such a design can reduce the rejection rate, contribute to improving production efficiency and reducing production costs.

[0008] Further, a scraping device is arranged on the side of the base. The scraping device includes a limiting plate. The side of the limiting plate is fixedly connected to the side of the base. A reciprocating motor is fixedly connected to the side of the limiting plate. The output shaft of the reciprocating motor is fixedly connected to a lead screw. A reciprocating nut sleeve is threadedly connected to the circumferential surface of the lead screw. A moving rod is fixedly connected to the side of the reciprocating nut sleeve. A scraping rod is fixedly connected to the circumferential surface of the moving rod. Such a design can reduce the wear of the mold and extend the service life of the mold.

[0009] Further, a limiting plate is fixedly connected to the side of the base. The bottom of the reciprocating nut sleeve is in contact with the top of the base. The circumferential surface of the scraping rod is in contact with the surface of the lower mold assembly. Such a design can reduce the risk of defects or non-conformities and reduce the defect rate of the products.

[0010] Further, the circumferential surface of the scraping rod is in contact with the surface of the lower mold assembly. The scraping rod is fixedly connected to the reciprocating nut sleeve through the moving rod. Such a design can ensure the smoothness of the mold surface, thereby producing products with a more delicate appearance and higher quality.

[0011] Furthermore, a heat dissipation device is provided on the top of the reciprocating wire sleeve, and the heat dissipation device includes a placement plate, the bottom of the placement plate is fixedly connected to the top of the reciprocating wire sleeve, the side of the placement plate is fixedly connected to a placement block, the side of the placement block is fixedly connected to a motor 1, the output shaft of the motor 1 is fixedly connected to a rotating shaft, one end of the rotating shaft is fixedly connected to a rotating rod, and the circumferential surface of the rotating rod is fixedly connected to fan blades. Such a design can avoid structural changes that may occur under high temperature conditions and ensure that the mold maintains a stable geometric shape and size.

[0012] Furthermore, a protective frame is fixedly connected to the top of the placement plate, a protective net is fixedly connected to the side of the protective frame, and the protective net is fixedly connected to the placement plate through the protective frame. Such a design can speed up product molding, shorten the production cycle, and improve production efficiency.

[0013] Furthermore, the fan blades are provided in plurality and are arranged in a circumferential array on the circumferential surface of the rotating rod. Such a design can reduce the thermal stress of the mold caused by rapid cooling, reduce the risk of deformation, and improve the stability and life of the mold.

[0014] The present invention has the following beneficial effects: The present invention achieves that when the positioning plate moves between the oblique plate and the base, the bottom of the oblique plate is on the top of the positioning plate, thereby fixing the positioning plate, and achieving the effect of accurately positioning the various components of the mold relative to each other during assembly, thereby reducing the scrap rate.

[0015] The present invention cooperates with the scraper rod, moving rod and reciprocating wire sleeve and other components inside the scraper device through the driving force of the reciprocating motor, so that the moving rod is driven to move during the movement of the reciprocating wire sleeve, and the movement of the moving rod drives the scraper rod to move, thereby scraping off impurities on the surface of the mold, thereby achieving the effect of reducing the wear of the mold and extending the service life of the mold.

[0016] The present invention achieves that the rotation of the rotating shaft drives the rotating rod to rotate, and the rotation of the rotating rod drives the fan blades to rotate, through the driving force of the motor 1 cooperating with the components such as the rotating shaft, the rotating rod and the fan blades inside the heat dissipation device, thereby dissipating heat and cooling the completed mold, thereby achieving the effect of shortening the production cycle and improving production efficiency.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying 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 accompanying drawings can be obtained based on these drawings.

[0019] Figure 1 3D external structure schematic diagram of an injection mold for a plastic mold with a positioning function according to the present invention; Figure 2 3D side sectional structure schematic diagram of an injection mold for a plastic mold with a positioning function according to the present invention; Figure 3 3D enlarged structure schematic diagram at the fixed plate of an injection mold for a plastic mold with a positioning function according to the present invention; Figure 4 3D enlarged structure schematic diagram at the hinge rod of an injection mold for a plastic mold with a positioning function according to the present invention; Figure 5 3D enlarged structure schematic diagram at the lead screw of an injection mold for a plastic mold with a positioning function according to the present invention; Figure 6 3D enlarged structure schematic diagram at the reciprocating nut of an injection mold for a plastic mold with a positioning function according to the present invention; Figure 7 3D enlarged structure schematic diagram at the fan blade of an injection mold for a plastic mold with a positioning function according to the present invention.

[0020] In the accompanying drawings, the list of components represented by each reference numeral is as follows: 1. Base; 2. Support rod; 3. Top plate; 4. Upper mold assembly; 5. Lower mold assembly; 6. Injection pipe; 7. Positioning device; 71. Fixed plate; 72. Fixed rod; 73. Disc; 74. Inclined plate; 75. First hinge block; 76. Hinge rod; 77. Second hinge block; 78. Telescopic rod; 79. Positioning plate; 710. Pressing disc; 711. Spring; 8. Scraping device; 81. Limiting plate; 82. Reciprocating motor; 83. Lead screw; 84. Reciprocating nut; 85. Moving rod; 86. Scraping rod; 87. Restricting plate; 9. Heat dissipation device; 91. Placing plate; 92. Placing block; 93. First motor; 94. Rotating shaft; 95. Rotating rod; 96. Fan blade; 97. Protection frame; 98. Protection net. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0022] Please refer to Figures 1-5 , the present invention is an injection mold for a plastic mold with a positioning function, including a base 1. A support rod 2 is fixedly connected to the side of the base 1. One end of the support rod 2 is fixedly connected to a top plate 3. A upper mold assembly 4 is arranged at the bottom of the top plate 3. A lower mold assembly 5 is arranged on the top of the base 1. A feeding pipe 6 is fixedly penetrated through the side of the lower mold assembly 5. A positioning device 7 is arranged on the top of the base 1. The positioning device 7 includes a fixing plate 71. The bottom of the fixing plate 71 is fixedly connected to the top of the base 1. A fixing rod 72 penetrates through the side of the fixing plate 71. One end of the fixing rod 72 is fixedly connected to a disc 73. The end of the fixing rod 72 away from the disc 73 is fixedly connected to an inclined plate 74. A hinge block one 75 is fixedly connected to the side of the inclined plate 74. A hinge rod 76 is hinged to the side of the hinge block one 75. The end of the hinge rod 76 away from the hinge block one 75 is hinged to a hinge block two 77. A telescopic rod 78 is fixedly connected to the bottom of the upper mold assembly 4. The end of the telescopic rod 78 away from the upper mold assembly 4 is fixedly connected to a positioning plate 79. A pressing disc 710 is fixedly connected to the bottom of the positioning plate 79.

[0023] A spring 711 is fixedly sleeved on the circumferential surface of the fixing rod 72. The end of the spring 711 away from the disc 73 is fixedly connected to the fixing plate 71. The inclined plate 74 is fixedly connected to the disc 73 through the fixing rod 72. Such a design can ensure that the various components of the mold can be accurately positioned relative to each other during assembly.

[0024] The hinge block two 77 is slidably connected to the side of the fixing plate 71. A gap is provided between the inclined plate 74 and the base 1. Such a design can reduce the rejection rate, help improve production efficiency and reduce production costs.

[0025] A scraping device 8 is arranged on the side of the base 1. The scraping device 8 includes a limiting plate 81. The side of the limiting plate 81 is fixedly connected to the side of the base 1. A reciprocating motor 82 is fixedly connected to the side of the limiting plate 81. The output shaft of the reciprocating motor 82 is fixedly connected to a lead screw 83. A reciprocating nut 84 is threadedly connected to the circumferential surface of the lead screw 83. A moving rod 85 is fixedly connected to the side of the reciprocating nut 84. A scraping rod 86 is fixedly connected to the circumferential surface of the moving rod 85. Such a design can reduce the wear of the mold and extend the service life of the mold.

[0026] On the side of the base 1, a limiting plate 87 is fixedly connected. The bottom of the reciprocating wire sleeve 84 is in contact with the top of the base 1, and the circumferential surface of the scraping rod 86 is in contact with the surface of the lower mold assembly 5. Such a design can reduce the risk of defects or non-conformities and decrease the defect rate of the product.

[0027] The circumferential surface of the scraping rod 86 is in contact with the surface of the lower mold assembly 5. The scraping rod 86 is fixedly connected to the reciprocating wire sleeve 84 through a moving rod 85. Such a design can ensure the smoothness of the mold surface, thereby producing products with a more delicate appearance and higher quality.

[0028] At the top of the reciprocating wire sleeve 84, a heat dissipation device 9 is provided. The heat dissipation device 9 includes a placement plate 91. The bottom of the placement plate 91 is fixedly connected to the top of the reciprocating wire sleeve 84. On the side of the placement plate 91, a placement block 92 is fixedly connected. On the side of the placement block 92, a motor 93 is fixedly connected. The output shaft of the motor 93 is fixedly connected to a rotating shaft 94. One end of the rotating shaft 94 is fixedly connected to a rotating rod 95. On the circumferential surface of the rotating rod 95, fan blades 96 are fixedly connected. Such a design can avoid possible structural changes under high-temperature conditions and ensure that the mold maintains a stable geometric shape and dimensions.

[0029] On the top of the placement plate 91, a protective frame 97 is fixedly connected. On the side of the protective frame 97, a protective net 98 is fixedly connected. The protective net 98 is fixedly connected to the placement plate 91 through the protective frame 97. Such a design can accelerate the forming speed of the product, shorten the production cycle, and improve production efficiency.

[0030] There are multiple fan blades 96, which are arranged in a circumferential array on the circumferential surface of the rotating rod 95. Such a design can reduce the thermal stress caused by the rapid cooling of the mold, lower the risk of deformation, and improve the stability and service life of the mold.

[0031] A specific application of this embodiment is: injecting material from the injection pipe 6 into the lower mold assembly 5, when the upper mold assembly 4 starts to press the lower mold assembly 5, the lower mold assembly 5 drives the telescopic rod 78 to move downward, the telescopic rod 78 drives the positioning plate 79 to move downward, the movement of the positioning plate 79 drives the pressing disc 710 to move downward, when the positioning plate 79 moves to the inclined surface of the inclined plate 74, it pushes the inclined plate 74 to the side, the inclined plate 74 is pushed to drive the movement of the fixed rod 72, the movement of the fixed rod 72 drives the spring 711 to be compressed, When the positioning plate 79 moves to between the inclined plate 74 and the base 1, it will no longer interfere with the inclined plate 74, so the spring 711 rebounds, thereby driving the fixing rod 72 to move, thereby driving the inclined plate 74 to move, and finally making the bottom of the inclined plate 74 on the top of the positioning plate 79 to fix it. After the mold is completed, the disc 73 is pulled, and the disc 73 is pulled to drive the fixing rod 72 to move. The movement of the fixing rod 72 drives the inclined plate 74 to leave the top of the positioning plate 79, and then the positioning plate 79 follows the upper mold assembly 4 to move upward.

[0032] After the mold is completed and the upper mold assembly 4 is retracted, the reciprocating motor 82 is started, and the output shaft of the reciprocating motor 82 drives the screw rod 83 to rotate clockwise, so that the reciprocating wire sleeve 84 moves toward the direction of the limiting plate 87. When the reciprocating motor 82 drives the screw rod 83 to rotate counterclockwise, the reciprocating wire sleeve 84 moves toward the direction of the limiting plate 81. During the movement of the reciprocating wire sleeve 84, the moving rod 85 is driven to move, and the movement of the moving rod 85 drives the scraper rod 86 to move to scrape off the impurities on the surface of the mold. While starting the reciprocating motor 82, the motor 1 93 is started at the same time. The output shaft of the motor 1 93 drives the rotating shaft 94 to rotate, and the rotation of the rotating shaft 94 drives the rotating rod 95 to rotate, and the rotation of the rotating rod 95 drives the fan blades 96 to rotate, thereby dissipating heat and cooling the completed mold.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An injection mold for plastic molds with a positioning function, including a base (1), characterized in that: A support rod (2) is fixedly connected to the side of the base (1). One end of the support rod (2) is fixedly connected to a top plate (3). A top die assembly (4) is arranged at the bottom of the top plate (3). A bottom die assembly (5) is arranged at the top of the base (1). A material injection pipe (6) is fixedly penetrated through the side of the bottom die assembly (5). A positioning device (7) is arranged at the top of the base (1). The positioning device (7) includes a fixing plate (71). The bottom of the fixing plate (71) is fixedly connected to the top of the base (1). A fixing rod (72) penetrates through the side of the fixing plate (71). One end of the fixing rod (72) is fixedly connected to a disc (73). The end of the fixing rod (72) far away from the disc (73) is fixedly connected to an inclined plate (74). A hinge block one (75) is fixedly connected to the side of the inclined plate (74). A hinge rod (76) is hinged to the side of the hinge block one (75). The end of the hinge rod (76) far away from the hinge block one (75) is hinged to a hinge block two (77). A telescopic rod (78) is fixedly connected to the bottom of the top die assembly (4). The end of the telescopic rod (78) far away from the top die assembly (4) is fixedly connected to a positioning plate (79). A pressing disc (710) is fixedly connected to the bottom of the positioning plate (79).

2. The injection mold for plastic molds with a positioning function according to claim 1, characterized in that A spring (711) is fixedly sleeved on the circumferential surface of the fixing rod (72). The end of the spring (711) far away from the disc (73) is fixedly connected to the fixing plate (71). The inclined plate (74) is fixedly connected to the disc (73) through the fixing rod (72).

3. The injection mold for plastic molds with a positioning function according to claim 2, characterized in that The hinge block two (77) is slidably connected to the side of the fixing plate (71). A gap is arranged between the inclined plate (74) and the base (1).

4. The injection mold for plastic molds with a positioning function according to claim 3, characterized in that A scraping device (8) is arranged on the side of the base (1). The scraping device (8) includes a limiting plate (81). The side of the limiting plate (81) is fixedly connected to the side of the base (1). A reciprocating motor (82) is fixedly connected to the side of the limiting plate (81). The output shaft of the reciprocating motor (82) is fixedly connected to a lead screw (83). A reciprocating nut sleeve (84) is threadedly connected to the circumferential surface of the lead screw (83). A moving rod (85) is fixedly connected to the side of the reciprocating nut sleeve (84). A scraping rod (86) is fixedly connected to the circumferential surface of the moving rod (85).

5. The injection mold for plastic molds with a positioning function according to claim 4, characterized in that A limiting plate (87) is fixedly connected to the side of the base (1). The bottom of the reciprocating nut sleeve (84) is in contact with the top of the base (1). The circumferential surface of the scraping rod (86) is in contact with the surface of the bottom die assembly (5).

6. The injection mold for plastic molds with a positioning function according to claim 5, characterized in that The circumferential surface of the scraping rod (86) is in contact with the surface of the bottom die assembly (5). The scraping rod (86) is fixedly connected to the reciprocating nut sleeve (84) through the moving rod (85).

7. The injection mold for plastic molds with a positioning function according to claim 6, characterized in that A heat dissipation device (9) is provided at the top of the reciprocating wire sleeve (84). The heat dissipation device (9) includes a placement plate (91), the bottom of the placement plate (91) is fixedly connected to the top of the reciprocating wire sleeve (84), a placement block (92) is fixedly connected to the side of the placement plate (91), a first motor (93) is fixedly connected to the side of the placement block (92), a rotating shaft (94) is fixedly connected to the output shaft of the first motor (93), a rotating rod (95) is fixedly connected to one end of the rotating shaft (94), and a fan blade (96) is fixedly connected to the circumferential surface of the rotating rod (95).

8. The injection mold for plastic molds with a positioning function according to claim 7, characterized in that A protective frame (97) is fixedly connected to the top of the placement plate (91), a protective net (98) is fixedly connected to the side of the protective frame (97), and the protective net (98) is fixedly connected to the placement plate (91) through the protective frame (97).

9. The injection mold for plastic molds with a positioning function according to claim 8, characterized in that A plurality of the fan blades (96) are provided and are circumferentially arrayed on the circumferential surface of the rotating rod (95).

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