Floating positioning device for in-mold injection molding insert

Abstract

The utility model belongs to the technical field of in-mold injection molding, and discloses a floating positioning device for an in-mold injection molding insert, which comprises a bottom mold and a top mold, a communication component is arranged in the top mold, a mold core is arranged on one side, close to the bottom mold, of the outer part of the communication component, a positioning component is arranged in the communication component, and the positioning component is arranged in the bottom mold. One end of the positioning assembly communicates with the communicating assembly, and the other end of the positioning assembly penetrates through the communicating assembly, extends to the outside of the top die and is connected with a driving motor; the mold core comprises a movable insert movably installed on one side of the communicating assembly, and the side, close to the communicating assembly, of the movable insert is fixedly connected with an insert calibration pin. Due to the arrangement of the insert positioning plugs, the movable inserts can be preliminarily positioned under the matching of the insert calibration pins, so that a plurality of movable inserts can be simultaneously tensioned under the matching of the communication holes when the sealing movable plate moves in the later period, and the effect of stably positioning the positions of the movable inserts is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of in-mold injection molding, in particular to a floating positioning device for in-mold injection molding inserts. Background Art

[0002] During injection molding, the movable mold and the fixed mold are closed to form a pouring system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated to take out the plastic product. In a molding mold with a partial internal structure, such as a plastic product with an internal thread, it also includes a molding insert that extends into the cavity. The molding insert is fixed to the output shaft of a driving motor and is driven by the driving motor to move toward the mold cavity and stop moving after reaching a predetermined position. After the molding is completed and the mold is opened, the driving motor is driven to move in the opposite direction to exit.

[0003] However, most of the existing injection molding inserts are slidably mounted on the output shaft of the drive motor to facilitate rapid separation after demolding. However, after mold closing, due to inertia, tilt, and insufficient stability, it is difficult to accurately position the insert, resulting in poor precision of the injection molded product. Therefore, it needs to be improved. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides a floating positioning device for in-mold injection molding inserts, which has the advantage of facilitating the fixing of the insert position.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a floating positioning device for in-mold injection molding inserts, comprising a bottom mold and a top mold, a connecting component is arranged inside the top mold, a mold core is arranged outside the connecting component on a side close to the bottom mold, a positioning component is arranged inside the connecting component, one end of the positioning component is connected to the connecting component, and the other end of the positioning component passes through the connecting component and extends to the outside of the top mold and is connected to a driving motor;

[0006] The mold core includes a movable insert movably installed on one side of the connecting component, and the movable insert is fixedly connected to an insert calibration pin on the side close to the connecting component. The insert calibration pin is movably inserted into the interior of the connecting component, and the insert positioning plug is adsorbed on the side of the insert calibration pin close to the connecting component. The insert positioning plug is sealingly sleeved inside the connecting component.

[0007] Preferably, a bottom mold cavity is formed on one side of the bottom mold near the top mold, and a top mold cavity is formed on one side of the top mold near the bottom mold. A molded workpiece is injection molded inside the bottom mold cavity and the top mold cavity and outside the movable insert.

[0008] Preferably, the connecting component includes a core body fixedly installed in the middle of the top mold cavity, a sealing cavity is opened on the side of the core body close to the bottom mold, a limit ring is fixedly sleeved inside the sealing cavity, and the insert calibration pin and the insert positioning plug are sleeved in the sealing cavity and are respectively located on the left and right sides of the limit ring.

[0009] Preferably, one end of the insert positioning plug away from the insert positioning plug is sealingly sleeved inside the sealing cavity, and one end of the insert positioning plug close to the insert calibration pin is movably sleeved inside the limiting ring.

[0010] Preferably, a limiting groove is provided on a side of the mold core body away from the bottom mold, and a connecting hole is provided inside the mold core body, and two ends of the connecting hole are respectively connected to the sealing cavity and the limiting groove.

[0011] Preferably, the positioning assembly includes a sealing movable plate which is sealingly sleeved inside the limiting groove, a connecting positioning sleeve is fixedly connected to the side of the outer surface of the sealing movable plate away from the bottom mold, the other end of the connecting positioning sleeve passes through the limiting groove and extends to the outside of the top mold, the cross-section of the outer surface of the connecting positioning sleeve is a polygon, and the connecting positioning sleeve is movably sleeved inside the top mold.

[0012] Preferably, a driving motor is provided on the outer side of the top mold, a driving screw is fixedly connected to the right side of the output shaft of the driving motor, and the other end of the driving screw is threadedly sleeved on the inside of the connecting positioning sleeve.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. Due to the setting of the insert positioning plug, the utility model can preliminarily position the movable insert with the cooperation of the insert calibration pin, so that when the sealing movable plate moves later, multiple movable inserts can be tightened at the same time with the cooperation of the connecting hole, thereby achieving the effect of stably positioning the position of the movable insert.

[0015] 2. Due to the setting of the sealing cavity, the utility model can not only accurately position the movable insert with the cooperation of the insert calibration pin and the insert positioning plug, but also facilitate the pushing of the movable insert after the mold is opened, so that it drives the molded workpiece to leave the top mold cavity, thereby achieving the effect of facilitating demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the front side of the utility model;

[0018] Figure 3 for Figure 2 Front view of the mid-section;

[0019] Figure 4 This is a schematic diagram of the internal structure of the sealing chamber of the utility model;

[0020] Figure 5 It is a front view of a molded workpiece of the utility model.

[0021] In the figure: 1. bottom mold; 2. top mold; 3. mold core; 31. movable insert; 32. insert calibration pin; 33. insert positioning plug; 4. positioning assembly; 41. connecting positioning sleeve; 42. driving screw; 43. sealing movable plate; 5. driving motor; 6. bottom mold cavity; 7. top mold cavity; 8. connecting assembly; 81. mold core body; 82. sealing cavity; 83. limiting groove; 84. connecting hole; 85. limiting ring; 9. molded workpiece. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 5 As shown, the utility model provides a floating positioning device for in-mold injection molding inserts, including a bottom mold 1 and a top mold 2, a connecting component 8 is arranged inside the top mold 2, a mold core 3 is arranged on the outside of the connecting component 8 close to the bottom mold 1, a positioning component 4 is arranged inside the connecting component 8, one end of the positioning component 4 is connected to the connecting component 8, and the other end of the positioning component 4 passes through the connecting component 8 and extends to the outside of the top mold 2 and is connected to a driving motor 5;

[0024] The mold core 3 includes a movable insert 31 movably installed on one side of the connecting component 8, and an insert calibration pin 32 is fixedly connected to the side of the movable insert 31 close to the connecting component 8. The insert calibration pin 32 is movably inserted into the inside of the connecting component 8, and an insert positioning plug 33 is adsorbed on the side of the insert calibration pin 32 close to the connecting component 8. The insert positioning plug 33 is sealingly sleeved in the inside of the connecting component 8; due to the setting of the insert positioning plug 33, the movable insert 31 can be preliminarily positioned with the cooperation of the insert calibration pin 32, so that when the sealing movable plate 43 moves later, multiple movable inserts 31 can be tightened at the same time with the cooperation of the connecting hole 84, thereby achieving the effect of stably positioning the position of the movable insert 31.

[0025] like Figure 2 and Figure 3As shown, a bottom mold cavity 6 is opened on one side of the bottom mold 1 close to the top mold 2, and a top mold cavity 7 is opened on one side of the top mold 2 close to the bottom mold 1. A molded workpiece 9 is injection molded inside the bottom mold cavity 6 and the top mold cavity 7 and outside the movable insert 31.

[0026] like Figure 3 and Figure 4 As shown, the connecting component 8 includes a core body 81 fixedly installed in the middle of the top mold cavity 7, and a sealing cavity 82 is opened on the side of the core body 81 close to the bottom mold 1. A limit ring 85 is fixedly sleeved inside the sealing cavity 82, and the insert calibration pin 32 and the insert positioning plug 33 are sleeved in the sealing cavity 82 and are respectively located on the left and right sides of the limit ring 85; due to the setting of the sealing cavity 82, the movable insert 31 can be accurately positioned with the cooperation of the insert calibration pin 32 and the insert positioning plug 33, and it is also convenient to push the movable insert 31 after the mold is opened, so that it drives the molded workpiece 9 to separate from the top mold cavity 7, thereby achieving the effect of facilitating demolding.

[0027] like Figure 4 As shown, one end of the insert positioning plug 33 away from the insert positioning plug 33 is sealed and sleeved inside the sealing cavity 82, and one end of the insert positioning plug 33 close to the insert calibration pin 32 is movably sleeved inside the limiting ring 85; due to the setting of the limiting ring 85, the stability of the left and right ends of the insert positioning plug 33 can be improved with the cooperation of the sealing cavity 82, and the movement of the left end of the insert positioning plug 33 can be restricted, thereby avoiding the situation where the insert positioning plug 33 is completely separated from the sealing cavity 82.

[0028] like Figure 3 As shown, a limiting groove 83 is provided on the side of the core body 81 away from the bottom mold 1, and a connecting hole 84 is provided inside the core body 81. The two ends of the connecting hole 84 are respectively connected with the sealing cavity 82 and the limiting groove 83. Due to the setting of the limiting groove 83, when the sealing movable plate 43 moves, it can drive the inside of the sealing cavity 82 to move with the cooperation of the connecting hole 84, so that the high pressure or negative pressure can drive the insert positioning plug 33 to move.

[0029] like Figure 3 As shown, the positioning assembly 4 includes a sealing movable plate 43 which is sealingly sleeved inside the limiting groove 83, a connecting positioning sleeve 41 is fixedly connected to the side of the outer surface of the sealing movable plate 43 away from the bottom mold 1, the other end of the connecting positioning sleeve 41 passes through the limiting groove 83 and extends to the outside of the top mold 2, the cross-section of the outer surface of the connecting positioning sleeve 41 is a polygon, and the connecting positioning sleeve 41 is movably sleeved inside the top mold 2; due to the setting of the connecting positioning sleeve 41, the driving screw 42 can be prevented from rotating to drive the connecting positioning sleeve 41 to rotate under the restriction of the top mold 2, thereby ensuring that the driving screw 42 can drive the connecting positioning sleeve 41 and the sealing movable plate 43 to move left and right when rotating.

[0030] like Figure 3 As shown, a driving motor 5 is arranged on the outside of the top mold 2 , and a driving screw 42 is fixedly connected to the right side of the output shaft of the driving motor 5 , and the other end of the driving screw 42 is threadedly sleeved on the inside of the connecting positioning sleeve 41 .

[0031] The working principle and use process of this utility model:

[0032] Insert the insert calibration pin 32 on the back of the movable insert 31 into the core body 81, and then the movable insert 31 is restricted on the core body 81 under the magnetic attraction of the insert positioning plug 33, and then the drive motor 5 is driven to run and drive the driving screw 42 to rotate, and then the connection positioning sleeve 41 can move left and right under the restriction of the top mold 2. When the connection positioning sleeve 41 moves to the left, it can drive the sealing movable plate 43 to move left along the limiting groove 83, and then a negative pressure can be formed in the sealing cavity 82 under the cooperation of the connecting hole 84, so that the insert positioning plug 33 has a tendency to move to the left. At the same time, under the action of negative pressure, the insert calibration pin 32 can be pulled to make the movable insert 31 tightly attached to the surface of the core body 81, and then the bottom mold 1 and the top mold 2 are molded together to form an integrated mold cavity with the bottom mold cavity 6 and the top mold cavity 7, and then the slurry is injected and cooled to complete the molding;

[0033] After cooling and molding, the mold is opened, and the molding mold can be taken out from the bottom mold cavity 6 with the cooperation of the movable insert 31. At this time, the driving motor 5 moves in the opposite direction, and the sealing movable plate 43 can be pushed to the right by driving the screw rod 42 and the connecting positioning sleeve 41, so that the air pressure in the sealing cavity 82 pushes the insert calibration pin 32 and the movable insert 31 in the opposite direction, so that they are separated from the sealing cavity 82, and at the same time, the left end of the molded workpiece 9 is separated from the top mold cavity 7, and finally the movable insert 31 is pulled out from the side of the molded workpiece 9.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A floating positioning device for in-mold injection molding, comprising a bottom mold (1) and a top mold (2), characterized in that: A connecting component (8) is arranged inside the top mold (2); a mold core (3) is arranged on the outside of the connecting component (8) near the bottom mold (1); a positioning component (4) is arranged inside the connecting component (8); one end of the positioning component (4) is connected to the connecting component (8); the other end of the positioning component (4) passes through the connecting component (8) and extends to the outside of the top mold (2) and is connected to a driving motor (5); The mold core (3) includes a movable insert (31) movably mounted on one side of the connecting component (8); the movable insert (31) is fixedly connected to an insert calibration pin (32) on the side close to the connecting component (8); the insert calibration pin (32) is movably inserted into the interior of the connecting component (8); the insert calibration pin (32) is adsorbed with an insert positioning plug (33) on the side close to the connecting component (8); and the insert positioning plug (33) is sealingly sleeved inside the connecting component (8).

2. A floating positioning device for in-mold injection molding according to claim 1, characterized in that: A bottom mold cavity (6) is provided on a side of the bottom mold (1) close to the top mold (2), and a top mold cavity (7) is provided on a side of the top mold (2) close to the bottom mold (1). A molded workpiece (9) is injection molded inside the bottom mold cavity (6) and the top mold cavity (7) and outside the movable insert (31).

3. A floating positioning device for in-mold injection molding according to claim 2, characterized in that: The connecting component (8) comprises a core body (81) fixedly mounted in the middle of the top mold cavity (7); a sealing cavity (82) is provided on a side of the core body (81) close to the bottom mold (1); a limit ring (85) is fixedly sleeved inside the sealing cavity (82); the insert calibration pin (32) and the insert positioning plug (33) are sleeved in the sealing cavity (82) and are respectively located on the left and right sides of the limit ring (85).

4. A floating positioning device for in-mold injection molding according to claim 3, characterized in that: One end of the insert positioning plug (33) away from the insert positioning plug (33) is sealingly sleeved inside the sealing cavity (82), and one end of the insert positioning plug (33) close to the insert calibration pin (32) is movably sleeved inside the limiting ring (85).

5. A floating positioning device for in-mold injection molding according to claim 3, characterized in that: A limiting groove (83) is provided inside the mold core body (81) on a side away from the bottom mold (1), and a connecting hole (84) is provided inside the mold core body (81), and two ends of the connecting hole (84) are respectively connected to the sealing cavity (82) and the limiting groove (83).

6. A floating positioning device for in-mold injection molding according to claim 5, characterized in that: The positioning assembly (4) comprises a sealing movable plate (43) which is sealingly sleeved inside a limiting groove (83); a connecting positioning sleeve (41) is fixedly connected to the side of the outer surface of the sealing movable plate (43) away from the bottom mold (1); the other end of the connecting positioning sleeve (41) passes through the limiting groove (83) and extends to the outside of the top mold (2); the cross-section of the outer surface of the connecting positioning sleeve (41) is polygonal; and the connecting positioning sleeve (41) is movably sleeved inside the top mold (2).

7. A floating positioning device for in-mold injection molding according to claim 6, characterized in that: A driving motor (5) is arranged on the outside of the top mold (2), and a driving screw rod (42) is fixedly connected to the right side of the output shaft of the driving motor (5), and the other end of the driving screw rod (42) is threadedly sleeved on the inside of the connecting positioning sleeve (41).

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