Injection mold convenient to demold

Abstract

The utility model particularly relates to an injection mold convenient for demolding, which comprises a workbench and further comprises a control box fixedly arranged on the upper surface of the left part of the workbench, a telescopic driving rod arranged on one side of the control box, a movable mold arranged on one side of the driving rod, and an injection mechanism arranged on the upper surface of the right part of the workbench, one side of the injection mechanism is communicated with a fixed mold, the fixed mold is matched with the movable mold, a cutting groove is formed in the surface of the side, away from the movable mold, of the fixed mold, a cutting assembly is arranged in the cutting groove, and a stripping assembly is arranged between the control box and the movable mold; through the cooperation of the structure, the purposes that the injection mold is good in demolding effect and not affected by rim charges are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and in particular relates to an injection mold which is easy to demould. Background Art

[0002] Injection molding, also known as injection molding, is a processing method used in mass production of certain complex-shaped parts. Injection molding is achieved through an injection molding machine and a mold. Specifically, it refers to the high-pressure injection of heated and melted plastic into the mold cavity by an injection molding machine, and the desired plastic product is obtained after cooling and solidification.

[0003] At present, during the processing of the existing injection mold, since the injection gate part of the existing injection mold does not have a certain truncation and cutting function, a large volume of injection material solidifies and accumulates at the gate of the injection molded parts, and shear force occurs between the finished product and the mold during the demoulding process, which easily causes damage to the product. In addition, the injection molded product is generally attached to the injection groove, which is troublesome to remove manually, seriously affecting the overall production efficiency. An injection mold that is easy to demould is provided to alleviate the problem of injection gate material accumulation. Summary of the invention

[0004] The utility model cooperates with a cutting component and a stripping component to move the cutting knife inward to cut off the residual edge material at the injection port and adsorb the injection molded part, thereby achieving the purpose of good demoulding effect of the injection mold without being affected by the edge material.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An injection mold that is easy to demould comprises a workbench, and also includes: a control box is fixedly arranged on the upper surface of the left portion of the workbench, a retractable driving rod is arranged on one side of the control box, a movable mold is arranged on one side of the driving rod, an injection mechanism is arranged on the upper surface of the right portion of the workbench, one side of the injection mechanism is connected to a fixed mold, the fixed mold and the movable mold are adapted to each other, a cutting groove is opened on the surface of the fixed mold away from the movable mold, a cutting component is arranged in the cutting groove, and a stripping component is arranged between the control box and the movable mold.

[0007] Preferably, the cutting assembly includes a motor, a spiral rod is connected to the output end of the motor, a moving block is arranged outside the spiral rod, an injection hole is opened on the side wall of the fixed mold, slide grooves are arranged on both sides of the injection hole, a first slider is arranged in the slide groove, a cartridge is arranged on the outside of the first slider, a connecting seat is installed on the cartridge close to the injection hole, a cutting knife is arranged at the bottom end of the connecting seat, a disassembly assembly is arranged in the cartridge, a swing plate is hingedly connected to the outside of the cartridge away from the injection hole, and the other end of the swing plate is hingedly connected to the inner end of the moving block.

[0008] Preferably, the stripping assembly includes a circular groove, the circular groove is symmetrically opened inside the movable mold, a sealing movable part is arranged inside the circular groove, a fixed plate is arranged at the outer end of the sealing movable part passing through the movable mold, the two fixed plates are connected by a connecting plate, a diverter groove is opened inside the movable mold, one end of the diverter groove is connected to the inside of the circular groove, the other end of the diverter groove is arranged on the side of the movable mold away from the fixed mold, and is connected to a telescopic air pipe, and the other end of the telescopic air pipe is connected to an air pump.

[0009] Preferably, the stripping assembly also includes a guide groove, the guide groove is symmetrically opened inside the movable mold, a push rod is arranged in the guide groove, a pressure plate is connected between the two push rods, a second spring is arranged outside the push rod, one end of the second spring is connected to the side of the pressure plate, and the other end is connected to the outer side of the movable mold.

[0010] Preferably, the disassembly assembly includes a limiting hole, the limiting hole is opened in the cartridge, a clamping plate is inserted in the limiting hole, a pull ring is arranged on the outer side of the clamping plate, and a first spring is connected to the side wall on the opposite side of the pull ring and the cartridge.

[0011] Preferably, a slide rail is provided on the upper surface of the workbench, and a second slide block is provided below the fixed mold and the movable mold.

[0012] Compared with the prior art, the gain effect of the utility model is:

[0013] 1. By setting up a cutting assembly, the motor drives the spiral rod to rotate, drives the moving block to move, and then drives the swing plate to slide downward. Through the guiding effect of the first slider sliding in the slide groove, the swing plate drives the hinged cartridge to move inward, and then drives the cutting knife to cut off the material remaining at the injection hole, thereby avoiding the shear force generated by the residual edge material during direct demoulding, which causes damage to the finished product.

[0014] 2. By setting up a stripping component, the driving rod and the connecting plate are driven to move under the drive of the control box. The connecting plate drives the sealing movable part to move inside the circular groove through the fixed plate, and then the air pump is started to suck air. The gas is sucked into the air pump through the circular groove, the diversion groove and the telescopic air pipe in turn, so that negative pressure is formed in the circular groove to adsorb the injection molded parts in the movable mold, so that the injection molded parts leave the fixed mold; in the process of demolding, the injection molded parts may be prevented from adhering to the fixed mold, thereby improving the demolding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereogram of an embodiment of the utility model;

[0016] Figure 2It is a structural schematic diagram of a cutting assembly according to an embodiment of the utility model;

[0017] Figure 3 It is a half-section view of the cutting assembly and the disassembly assembly of the embodiment of the utility model;

[0018] Figure 4 It is a schematic cross-sectional structural diagram of a stripping assembly according to an embodiment of the utility model.

[0019] In the figure: workbench 1; fixed mold 2; cutting groove 21; movable mold 3; injection mechanism 4; control box 5; cutting assembly 6; motor 61; screw rod 62; moving block 63; swing plate 64; cartridge 65; first slider 66; connecting seat 67; cutting knife 68; injection hole 69; slide groove 610; stripping assembly 7; circular groove 71; sealing movable part 72; fixed plate 73; connecting plate 74; diverter groove 75; telescopic air pipe 76; air pump 77; guide groove 78; push rod 79; pressure plate 710; second spring 711; disassembly assembly 8; limiting hole 81; card plate 82; pull ring 83; first spring 84; slide rail 9; second slider 10; driving rod 11. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Example

[0022] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0023] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the utility model. In the description of the utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances; the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clearer understanding of the present invention.

[0025] See also Figure 1-4 , an injection mold that is easy to demold, includes a workbench 1, a control box 5 is fixedly arranged on the upper surface of the left part of the workbench 1, a retractable driving rod 11 is arranged on one side of the control box 5, a movable mold 3 is arranged on one side of the driving rod 11, an injection mechanism 4 is fixedly arranged on the upper surface of the right part of the workbench 1, one side of the injection mechanism 4 is connected with a fixed mold 2, the fixed mold 2 and the movable mold 3 are adapted to each other, a cutting groove 21 is opened on the surface of the fixed mold 2 away from the side of the movable mold 3, a cutting component 6 is arranged in the cutting groove 21, and a stripping component 7 is arranged between the control box 5 and the movable mold 3.

[0026] Furthermore, a slide rail 9 is fixedly provided on the upper surface of the workbench 1, and a second slider 10 is provided below the fixed mold 2 and the movable mold 3. The movable mold 3 can slide and cooperate between the second slider 10 and the slide rail 9, which can reduce the wear of components during mold closing.

[0027] See also Figure 1-4 The cutting assembly 6 includes a motor 61. The motor 61 is fixedly arranged on the top of both sides of the cutting groove 21. The output end of the motor 61 is fixedly connected to a screw rod 62. The other end of the screw rod 62 is rotatably connected to the inside of the fixed mold 2. A moving block 63 is arranged outside the screw rod 62. An injection hole 69 is opened on the side wall of the fixed mold 2. Slide grooves 610 are arranged on both sides of the injection hole 69. A first slider 66 is slidably arranged in the slide groove 610. A cartridge 65 is fixedly arranged on the outside of the first slider 66. A connecting seat 67 is clamped on the cartridge 65 on the side close to the injection hole 69. A cutting knife 68 is fixedly arranged on the bottom end of the connecting seat 67. A disassembly assembly 8 is arranged in the cartridge 65. A swing plate 64 is hinged on the outside of the cartridge 65 away from the injection hole 69. The other end of the swing plate 64 is hingedly connected to the inner end of the moving block 63.

[0028] In actual application, when the existing injection mold is performing injection molding, the residual molten material at the outlet of the injection hole is easily connected to the molten material in the concave mold after solidification, resulting in edge material. Shear force is easily generated during demolding, causing the finished product to break and resulting in defects.

[0029] In this embodiment, the motor 61 is first started to rotate, driving the screw rod 62 to rotate, and the screw rod 62 drives the moving block 63 to move, and then drives the swing plate 64 to slide downward. Through the guiding effect of the first slider 66 sliding in the slide groove 610, the swing plate 64 drives the hinged cartridge 65 to move inward, and then drives the cutting knife 68 to cut off the material remaining at the injection hole 69.

[0030] See also Figure 1-4The disassembly component 8 includes a limiting hole 81, a limiting hole 81 is opened in the cartridge 65, a card plate 82 is inserted in the limiting hole 81, a pull ring 83 is fixedly provided on the outer side of the card plate 82, and a first spring 84 is fixedly connected to the side wall on the opposite side of the pull ring 83 and the cartridge 65, so that the cutting knife 68 can be replaced in time after it is worn.

[0031] See also Figure 1-4 The stripping assembly 7 includes a circular groove 71. The movable mold 3 has symmetrical circular grooves 71 inside. A sealing movable part 72 is slidably arranged inside the circular groove 71. A fixed plate 73 is fixedly arranged at the outer end of the sealing movable part 72 that passes through the movable mold 3. The two fixed plates 73 are connected by a connecting plate 74. A diverter groove 75 is opened inside the movable mold 3. One end of the diverter groove 75 is connected to the inside of the circular groove 71. The other end of the diverter groove 75 is arranged on the side of the movable mold 3 away from the fixed mold 2, and is connected to a telescopic air supply pipe 76. The other end of the telescopic air supply pipe 76 is connected to an air pump 77.

[0032] In this embodiment, the control box 5 is started, so that the driving rod 11 drives the connecting plate 74 to move outward, the connecting plate 74 drives the fixed plate 73 to move, and the fixed plate 73 drives the sealing movable part 72 to move inside the circular groove 71, and then the air pump 77 is started to suck air, and the gas enters the diversion groove 75 through the circular groove 71, and is then sucked into the air pump 77 through the telescopic air pipe 76, so that a negative pressure is formed in the circular groove 71 to adsorb the injection molded part in the movable mold 3, so that the injection molded part leaves the fixed mold 2.

[0033] See also Figure 1-4 The stripping assembly 7 also includes a guide groove 78, and the movable mold 3 has symmetrically opened guide grooves 78. A push rod 79 is slidably arranged in the guide groove 78. A pressure plate 710 is fixedly connected between the two push rods 79. A second spring 711 is arranged outside the push rod 79. One end of the second spring 711 is connected to the side of the pressure plate 710, and the other end is connected to the outer side of the movable mold 3.

[0034] Working principle: When in use, start the control box 5 to make the movable mold 3 move close to the fixed mold 2 and contact the mold, inject material into the mold cavity through the injection mechanism 4, and demold after cooling; before demolding, first start the motor 61 to drive the screw rod 62 to rotate, the screw rod 62 drives the moving block 63 to move, and then drives the swing plate 64 to slide downward, so that the swing plate 64 drives the hinged cartridge 65 to move inward, driving the cutting knife 68 to cut off the material remaining at the injection hole 69.

[0035] Then, the control box 5 is started, so that the driving rod 11 drives the connecting plate 74 to move outward, and the connecting plate 74 drives the sealing movable part 72 to move inside the circular groove 71. Then, the air pump 77 is started to suck air. The gas is sucked into the air pump 77 through the circular groove 71, the diversion groove 75 and the telescopic air pipe 76 in turn, so that a negative pressure is formed in the circular groove 71 to adsorb the injection molded part in the movable mold 3 and make it leave the fixed mold 2; then, the movable mold 3 is driven to slide outward along the slide rail 9. After the movement is completed, the pressing plate 710 is pressed to drive the push rod 79 to move and take out the injection molded part.

Claims

1. An injection mold for easy demoulding, comprising a workbench (1), characterized in that A control box (5) is fixedly arranged on the upper left surface of the workbench (1), a retractable driving rod (11) is arranged on one side of the control box (5), a movable mold (3) is arranged on one side of the driving rod (11), an injection mechanism (4) is arranged on the upper right surface of the workbench (1), one side of the injection mechanism (4) is connected to a fixed mold (2), the fixed mold (2) and the movable mold (3) are adapted to each other, a cutting groove (21) is provided on the surface of the fixed mold (2) away from the movable mold (3), a cutting assembly (6) is arranged in the cutting groove (21), and a stripping assembly (7) is arranged between the control box (5) and the movable mold (3).

2. The injection mold for easy demoulding according to claim 1, characterized in that: The cutting assembly (6) comprises a motor (61), the output end of the motor (61) is connected to a screw rod (62), a moving block (63) is arranged outside the screw rod (62), an injection hole (69) is opened on the side wall of the fixed mold (2), slide grooves (610) are arranged on both sides of the injection hole (69), a first slider (66) is arranged in the slide groove (610), a cartridge (65) is arranged on the outside of the first slider (66), a connecting seat (67) is installed on the cartridge (65) on the side close to the injection hole (69), a cutting knife (68) is arranged at the bottom end of the connecting seat (67), a disassembly assembly (8) is arranged in the cartridge (65), and a swing plate (64) is hingedly connected to the outside of the cartridge (65) on the side away from the injection hole (69), and the other end of the swing plate (64) is hingedly connected to the inner end of the moving block (63).

3. The injection mold for easy demoulding according to claim 1, characterized in that: The stripping assembly (7) comprises a circular groove (71), the circular groove (71) is symmetrically provided inside the movable mold (3), a sealing movable part (72) is arranged inside the circular groove (71), a fixed plate (73) is arranged at the outer end of the sealing movable part (72) penetrating the movable mold (3), and the two fixed plates (73) are connected by a connecting plate (74), a diversion groove (75) is provided inside the movable mold (3), one end of the diversion groove (75) is connected to the inside of the circular groove (71), and the other end of the diversion groove (75) is arranged on the side of the movable mold (3) away from the fixed mold (2), and is connected to a telescopic air supply pipe (76), and the other end of the telescopic air supply pipe (76) is connected to an air pump (77).

4. The injection mold for easy demoulding according to claim 1, characterized in that: The stripping assembly (7) also includes a guide groove (78), the guide groove (78) is symmetrically opened inside the movable mold (3), a push rod (79) is arranged in the guide groove (78), a pressure plate (710) is connected between the two push rods (79), a second spring (711) is arranged outside the push rod (79), one end of the second spring (711) is connected to the side of the pressure plate (710), and the other end is connected to the outer side of the movable mold (3).

5. The injection mold for easy demoulding according to claim 2, characterized in that: The disassembly assembly (8) comprises a limiting hole (81), the limiting hole (81) is provided in the cartridge (65), a clamping plate (82) is inserted in the limiting hole (81), a pull ring (83) is provided on the outer side of the clamping plate (82), and a first spring (84) is connected to the side wall on the opposite side of the pull ring (83) and the cartridge (65).

6. The injection mold for easy demoulding according to claim 1, characterized in that: A slide rail (9) is provided on the upper surface of the workbench (1), and a second slide block (10) is provided below the fixed mold (2) and the movable mold (3).

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