Injection mold for preventing injection port from being blocked

Abstract

The present invention discloses an injection mold for preventing blockage of an injection port, comprising a control host, wherein the control host is connected to a base, one side of the control host is connected to one side of a front pressure plate, the other side of the front pressure plate is connected to one side of a movable mold, the other side of the movable mold is in contact with one side of a fixed mold, the other side of the fixed mold is connected to one side of a rear pressure plate, the other side of the rear pressure plate is connected to an injection control device passing through the rear pressure plate, the rear pressure plate is connected to the base, and the injection control device is connected to a control sliding device. The present invention solves the technical problems that after the injection molding machine has been used for a long time, the nozzle or feed port may accumulate impurities or residual raw materials, causing blockage, and most injection molding machines use spiral conveying of injection molding raw materials. When not in use, the spiral blade conveying cannot circulate the injection molding raw materials, so that the injection molding pipe needs to be emptied, causing waste. If the internal injection molding raw materials are not emptied, pigment precipitation will occur, causing the raw material color to change, thereby affecting product quality.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to an injection mold capable of preventing an injection port from being blocked. Background Art

[0002] Patent No. CN114889058A discloses an injection port for an injection mold, relating to the technical field of injection molds. The invention comprises an injection molding mechanism, wherein the injection molding mechanism is provided with a diversion mechanism and a heating mechanism. The injection molding mechanism comprises a lower mold, an upper mold movably connected to the lower mold, and an injection tube disposed on the upper mold. The invention activates a motor to rotate a worm, and the rotation of the worm gear drives the rack to move, thereby moving the diversion tube to isolate and seal the injection channel. At this time, the feed port coincides with the injection channel, allowing excess molten plastic to flow out through the diversion tube, which not only facilitates centralized recycling by staff but also prevents the formation of gates after the product cools and is formed. Simultaneously, the movement of the diversion tube squeezes the heating plate, causing the second conductive head to contact the first conductive head, triggering the electric heater to start and heat the diversion tube, preventing the hot molten plastic from solidifying when it encounters the cold diversion tube during diversion.

[0003] An injection mold primarily consists of a movable mold and a fixed mold. The movable mold is mounted on the movable platen of the injection molding machine, while the fixed mold is mounted on the fixed platen. During injection molding, the movable and fixed molds close together to form the gating system and the mold cavity. When the molds separate, the molded part remains in the movable mold and is ejected by a demolding mechanism within the movable mold.

[0004] The existing injection molding machine is prone to clogging of the injection port. The nozzle of the injection molding machine or the feed port of the mold is blocked by other impurities. After the equipment has been used for a long time, the nozzle or feed port may accumulate impurities or raw material residues, which may be blocked if not cleaned in time. At the same time, most of the existing injection molding machines use spiral conveying for injection molding raw materials. After not in use, the spiral blade conveying cannot circulate the injection molding raw materials, so the injection molding pipe needs to be emptied, causing waste. If the internal injection molding raw materials are not emptied, pigments will precipitate, causing the raw material color to change, affecting product quality.

[0005] Therefore, an injection mold that avoids clogging of the injection port is needed to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide an injection mold that avoids clogging of the injection port, so as to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: an injection mold for preventing injection port blockage, comprising a control host, characterized in that: the control host is connected to a base, one side of the control host is connected to one side of a front pressure plate, the other side of the front pressure plate is connected to one side of a movable mold, the other side of the movable mold contacts one side of a fixed mold, the other side of the fixed mold is connected to one side of a rear pressure plate, the other side of the rear pressure plate is connected to an injection control device passing through the rear pressure plate, the rear pressure plate is connected to the base, and the injection control device is connected to a control sliding device;

[0008] The injection molding control device includes an outer shell, one side of the inner wall of the outer shell is connected to one end of the inner shell, a hollow rectangular groove is provided at one end of the inner shell, the other end of the inner shell is not connected to the other side of the inner wall of the outer shell, the other end of the inner shell is in contact with one side of the control block, the other end of the control block is slidably connected to the injection port provided in the fixed mold, one side of the control block is connected to one end of the control rod, the outer shell and the inner shell are provided with a first feed port and a second feed port arranged vertically, the other end of the control rod is connected to a driving device, and the driving device is connected to a control sliding device;

[0009] The outer ring at one end of the control rod is connected to the closing block, and the closing block is slidably connected to the inner wall of the inner shell;

[0010] The control sliding device includes a symmetrically arranged sliding rod and a sliding sleeve, wherein the sliding rod is slidably connected to the sliding sleeve, one end of the sliding rod passes through the rear pressure plate and is connected to the front pressure plate, one end of the sliding sleeve is connected to the slider, the slider is slidably connected to the base, and the slider is connected to the driving device;

[0011] The driving device includes a servo motor, the output end of the servo motor is connected to the control rod, the outer ring of the control rod is connected to the inner ring of the spiral conveying blade, and the spiral conveying blade is connected to the inner wall of the inner shell;

[0012] The output end of the servo motor is connected to the transmission gear set, the transmission gear set is connected to one end of the heating sleeve, the other end of the heating sleeve is connected to the inner ring of the conductive slip ring, and the outer ring of the conductive slip ring is connected to the rear pressure plate; the other side of the front pressure plate is connected to one end of the guide rod, and the other end of the guide rod is slidably connected to the through hole opened in the rear pressure plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the injection mold for avoiding injection port blockage is reasonable and has the following advantages:

[0014] (1) The host controls the front pressure plate to drive the movable mold to move and contact the fixed mold on the rear pressure plate. When the front pressure plate moves, it will drive the control sliding device to open the injection control device. The injection control device opens the injection port of the fixed mold for injection molding. After the injection molding is completed, the host controls the front pressure plate to drive the movable mold to move and disengage from the fixed mold on the rear pressure plate. The injection control device closes the injection port of the fixed mold, thereby avoiding blockage of the injection port of the fixed mold and realizing automation to avoid blockage of the injection port.

[0015] (2) The servo motor drives the control rod and the spiral conveying blade, and one side of the inner wall of the outer shell is connected to one end of the inner shell. A hollow rectangular groove is provided at one end of the inner shell, and the other end of the inner shell is not connected to the other side of the inner wall of the outer shell, so that the control block can be separated from the inner shell when the injection port is closed. The continuously rotating servo motor can continue to drive the control rod and the spiral conveying blade to allow the injection molding material in the inner shell to circulate in the inner shell and the cavity between the inner shell and the outer shell, thereby preventing the spiral conveying blade from continuing to rotate when the injection molding material is not being injected, and avoiding the precipitation of the injection molding material pigment in the inner shell and the cavity without emptying, which causes the color of the material to change;

[0016] (3) By controlling the main machine to drive the rear pressure plate, slide rod, sleeve and slider, the slider drives the driving device and the injection control device to move, thereby ensuring that the injection port will not be blocked without manual control, and realizing automatic processing; when the injection port is opened for injection, the closing block no longer blocks the second feed port, so that normal injection can be performed, and then after the injection is completed, the control rod is pushed to cause the control block to close the injection port of the fixed mold again, and at the same time, the closing block blocks the second feed port again, thereby preventing the continuously rotating spiral conveying blade from bringing in the injection raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 Schematic diagram of the structure of the injection molding control device of the present invention;

[0021] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0022] Figure 6 for Figure 4 Enlarged view of point C in the middle;

[0023] Figure 7 Schematic diagram of the structure of the control sliding device in the present invention;

[0024] Figure 8 Schematic diagram of the structure of the spiral conveying blade in the present invention;

[0025] Figure 9 It is a structural schematic diagram of the driving device in the present invention.

[0026] In the figure: 1-control host, 2-front pressure plate, 3-rear pressure plate, 4-guide rod, 5-control sliding device, 51-slide rod, 52-slide sleeve, 53-slider, 6-movable mold, 7-fixed mold, 8-heating sleeve, 9-injection control device, 91-outer shell, 92-control block, 93-inner shell, 94-control rod, 95-closing block, 101-servo motor, 102-screw conveyor blade, 103-transmission gear set, 104-conductive slip ring. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-9 The present invention provides a technical solution: an injection mold for avoiding clogging of the injection port, comprising a control host 1, the control host 1 being connected to the base, one side of the control host 1 being connected to one side of the front pressure plate 2, the other side of the front pressure plate 2 being connected to one side of the movable mold 6, the other side of the movable mold 6 being in contact with one side of the fixed mold 7, the other side of the fixed mold 7 being connected to one side of the rear pressure plate 3, the other side of the rear pressure plate 3 being connected to the injection control device 9 passing through the rear pressure plate 3, the rear pressure plate 3 being connected to the base, the injection control device 9 being connected to the control sliding device 5, the front pressure plate 2 being controlled by the control host 1 to drive the movable mold 6 to move and contact the fixed mold 7 on the rear pressure plate 3, the front pressure plate 2 While moving, it will drive the control sliding device 5 to open the injection control device 9, and the injection control device 9 opens the injection port of the fixed mold 7 for injection. After the injection is completed, the control host 1 controls the front pressure plate 2 to drive the movable mold 6 to move and disengage from the fixed mold 7 on the rear pressure plate 3. The injection control device 9 closes the injection port of the fixed mold 7, thereby avoiding blockage of the injection port of the fixed mold 7, and realizes automation to avoid blockage of the injection port. The other side of the front pressure plate 2 is connected to one end of the guide rod 4, and the other end of the guide rod 4 is slidably connected to the perforation opened in the rear pressure plate 3. The guide rod 4 can ensure the stability of demolding and avoid damage to the finished parts of the injection mold.

[0029] The injection molding control device 9 includes an outer shell 91, one side of the inner wall of the outer shell 91 is connected to one end of the inner shell 93, and a hollow rectangular groove is provided at one end of the inner shell 93. The other end of the inner shell 93 contacts one side of the control block 92, and the other end of the control block 92 is slidably connected to the injection port opened in the fixed mold 7. One side of the control block 92 is connected to one end of the control rod 94. The outer shell 91 and the inner shell 93 are provided with a first feed port and a second feed port arranged vertically. The other end of the control rod 94 is connected to the driving device, and the driving device is connected to the control sliding device 5. By pulling the control rod 94, the control block 92 is disengaged from the injection port of the fixed mold 7, and the injection port is opened for injection molding. After the injection molding is completed, the control rod 94 is pushed again to cause the control block 92 to close the injection port of the fixed mold 7 again, thereby avoiding the blockage of the injection port. The control sliding device 5 includes a symmetrically arranged slide rod 51 and a slide sleeve 52, the slide rod 51 is slidably connected to the slide sleeve 52, one end of the slide rod 51 passes through the rear pressure plate 3 and is connected to the front pressure plate 2, one end of the slide sleeve 52 is connected to the slider 53, the slider 53 is slidably connected to the base, and the slider 53 is connected to the driving device. By controlling the host 1 to drive the rear pressure plate 3, the slide rod 51, the slide sleeve 52 and the slider 53, the slider 53 drives the driving device and the injection control device 9 to move, so that no manual control is required to ensure that the injection port will not be blocked, and automatic processing is realized. The outer ring of one end of the control rod 94 is connected to the closing block 95, and the closing block 95 is slidably connected to the inner wall of the inner shell 93.

[0030] The driving device includes a servo motor 101, the output end of the servo motor 101 is connected to the control rod 94, the outer ring of the control rod 94 is connected to the inner ring of the spiral conveying blade 102, and the spiral conveying blade 102 is connected to the inner wall of the inner shell 93. When the injection port is opened for injection molding, the closing block 95 no longer blocks the second feed port, so that normal injection molding can be performed. After the injection molding is completed, the control rod 94 is pushed to cause the control block 92 to close the injection port of the fixed mold 7 again. At the same time, the closing block 95 blocks the second feed port again, thereby preventing the continuously rotating spiral conveying blade from bringing in the injection molding material. At the same time, the servo motor 101 drives the control rod 94 and the spiral conveying blade 102, and the outer shell One side of the inner wall of 91 is connected to one end of the inner shell 93, and a hollow rectangular groove is provided at one end of the inner shell 93, while the other end of the inner shell 93 is not connected to the other side of the inner wall of the outer shell 91, so that the control block 92 can be separated from the inner shell 93 when the injection port is closed, and the continuously rotating servo motor 101 can continue to drive the control rod 94 and the spiral conveying blade to allow the injection molding material in the inner shell 93 to circulate in the inner shell 93 and the cavity between the inner shell 93 and the outer shell 91, thereby preventing the spiral conveying blade from continuing to rotate when the injection molding material is not being injected, and avoiding the pigment precipitation of the injection molding material in the inner shell 93 and the cavity without emptying, resulting in changes in the color of the raw material.

[0031] The output end of the servo motor 101 is connected to the transmission gear set 103, the transmission gear set 103 is connected to one end of the heating sleeve 8, the other end of the heating sleeve 8 is connected to the inner ring of the conductive slip ring 104, and the outer ring of the conductive slip ring 104 is connected to the rear pressure plate 3. The heating sleeve 8 can be rotated through the transmission gear set 103 and the conductive slip ring 104 to more fully heat the injection molding material in the inner shell 93 and the cavity.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An injection mold for preventing injection port blockage, comprising a control host (1), characterized in that: The control host (1) is connected to the base, one side of the control host (1) is connected to one side of the front pressure plate (2), the other side of the front pressure plate (2) is connected to one side of the movable mold (6), the other side of the movable mold (6) is in contact with one side of the fixed mold (7), the other side of the fixed mold (7) is connected to one side of the rear pressure plate (3), the other side of the rear pressure plate (3) is connected to the injection control device (9) passing through the rear pressure plate (3), the rear pressure plate (3) is connected to the base, and the injection control device (9) is connected to the control sliding device (5); The injection molding control device (9) includes an outer shell (91), one side of the inner wall of the outer shell (91) is connected to one end of the inner shell (93), one end of the inner shell (93) is provided with a hollow rectangular groove, and the other end of the inner shell (93) is not connected to the other side of the inner wall of the outer shell (91), the other end of the inner shell (93) is in contact with one side of the control block (92), the other end of the control block (92) is slidably connected to the injection port provided in the fixed mold (7), one side of the control block (92) is connected to one end of the control rod (94), the outer shell (91) and the inner shell (93) are provided with a first feed port and a second feed port arranged vertically, the other end of the control rod (94) is connected to a driving device, and the driving device is connected to the control sliding device (5); The outer ring of one end of the control rod (94) is connected to the closing block (95), and the closing block (95) is slidably connected to the inner wall of the inner shell (93); The control sliding device (5) includes a sliding rod (51) and a sliding sleeve (52) that are symmetrically arranged. The sliding rod (51) is slidably connected to the sliding sleeve (52). One end of the sliding rod (51) passes through the rear pressure plate (3) and is connected to the front pressure plate (2). One end of the sliding sleeve (52) is connected to the sliding block (53). The sliding block (53) is slidably connected to the base. The sliding block (53) is connected to the driving device. The driving device comprises a servo motor (101), an output end of the servo motor (101) is connected to a control rod (94), an outer ring of the control rod (94) is connected to an inner ring of a spiral conveying blade (102), and the spiral conveying blade (102) is connected to an inner wall of an inner casing (93). The output end of the servo motor (101) is connected to the transmission gear set (103) in a transmission connection, the transmission gear set (103) is connected to one end of the heating sleeve (8), the other end of the heating sleeve (8) is connected to the inner ring of the conductive slip ring (104), and the outer ring of the conductive slip ring (104) is connected to the rear pressure plate (3); the other side of the front pressure plate (2) is connected to one end of the guide rod (4), and the other end of the guide rod (4) is connected to the through hole opened in the rear pressure plate (3) in a sliding connection.

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