A rapid demoulding device for plastic mold

Abstract

The present invention discloses a rapid demoulding device for a plastic mold, comprising a base and a plurality of supporting mechanisms connected to the base, wherein an upper mold base opposite to the base is assembled and connected to one end of the supporting mechanism away from the base, a lower mold base is provided on the base in a sliding fit connection, the lower mold base comprises two lower mold plates symmetrically and slidingly provided on the base, a mold cavity is provided at the junction of the two lower mold plates, a driving mechanism for driving the lower mold plate to move is embedded in the base, and a liquid injection hole corresponding to the mold cavity is provided through the middle of the base. The upper mold base of the present invention drives the driving mechanism through the supporting mechanism, thereby using the driving mechanism to drive the lower mold plate to move relatively away, so that the injection molded part can be quickly demoulded, which is convenient for continuous processing and has higher demoulding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing, in particular to a rapid demoulding device for a plastic mould. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes.

[0003] Chinese patent announcement number: CN117921949B, discloses a rapid demoulding device for a plastic mold, the invention relates to the field of plastic processing technology, including a bottom mold, an injection hole is opened at the center point of the bottom mold, and a guide block is fixedly connected to the top surface of the bottom mold, and a first concave mold and a second concave mold are slidably connected to the top surface of the bottom mold, and the bottom surfaces of the first concave mold and the second concave mold are both opened with guide grooves.

[0004] In this solution, after the mold is opened, the separate molds and the upper and lower pressures are completely synchronized. This process is inconvenient for liquid injection and the overall processing time is too short, which affects the specific processing. Summary of the invention

[0005] The object of the present invention is to provide a rapid demoulding device for a plastic mold to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A quick demoulding device for a plastic mold comprises a base and a plurality of supporting mechanisms connected to the base, wherein an end of the supporting mechanism away from the base is assembled and connected with an upper mold base opposite to the base, a lower mold base is slidably connected and arranged on the base, the lower mold base comprises two lower mold plates symmetrically slidably arranged on the base, a mold cavity is arranged at the junction of the two lower mold plates, a driving mechanism for driving the lower mold plates to move is embedded in the base, a liquid injection hole corresponding to the mold cavity is arranged through the middle of the base, when the upper mold base is in a mating state with the mold cavity, the two lower mold plates are in a fitting state, when the upper mold base is away from the mold cavity, the upper mold base drives the driving mechanism to drive the two lower mold plates to move relatively away from each other through the supporting mechanism, and when the upper mold base moves away from the mold cavity to the limit, the two lower mold plates are relatively close and restored to a fitting state.

[0008] As a further solution of the present invention: the upper mold base includes an upper mounting plate, the supporting mechanism is connected between the four opposite corners of the upper mounting plate and the base, the upper mounting plate is fixedly connected to one side of the base facing the upper mold plate and is opposite to the lower mold plate, and an upper module matching the mold cavity is provided in the middle of the upper mold plate.

[0009] As a further solution of the present invention: a plurality of symmetrically arranged slide grooves are embedded in the upper end of the base, the drive mechanism is installed in the slide grooves, the slide grooves are respectively arranged on both sides of the lower template, and the extension direction of the slide grooves is consistent with the relative direction of the two lower templates, and the output end of the drive mechanism is fixedly connected to the lower template.

[0010] As a further solution of the present invention: the driving mechanism includes a bellows and sliding gaskets connected to both ends of the bellows, an air guide tube is arranged between the sliding gasket close to the supporting mechanism and the supporting mechanism, and a return spring is connected between the two sliding gaskets, and the return spring acts to move the two sliding gaskets relatively away from each other.

[0011] As a further solution of the present invention: the sliding gasket on the side close to the supporting mechanism is fixedly connected to the slide groove, and the sliding gasket on the side away from the supporting mechanism is connected to the slide groove in a sliding cooperation manner. A sliding block that slides in cooperation with the slide groove is fixedly connected to one side of the sliding gasket, and the sliding block is fixedly connected to the lower template.

[0012] As a further solution of the present invention: the supporting mechanism includes a lower sleeve embedded and fixed at the upper end of the base, a cavity is set in the lower sleeve, a piston rod is slidingly connected to the upper end of the lower sleeve, the lower sleeve and the piston rod are sealed and slidingly matched, the air guide tube is connected to the lower sleeve, and a mounting pad for connecting to an upper mounting plate is fixedly connected to the upper end of the piston rod.

[0013] As a further solution of the present invention: the lower end of the lower sleeve is connected to a vent hole, the vent hole is provided with a one-way valve connected from the inside of the lower sleeve to the outside, the vent hole is set through the lower end of the base, and the lower end of the lower sleeve is also connected to a connecting component connecting the inside and outside of the lower sleeve.

[0014] As a further solution of the present invention: the connecting component includes a sliding conduit that passes through the bottom of the lower sleeve, the piston rod is embedded with a blind hole on the side facing the lower sleeve, the lower end of the sliding conduit passes through the bottom of the base and is connected to the outside, the upper end of the sliding conduit is closed, and an air vent is passed through the upper side of the sliding conduit.

[0015] Compared with the prior art, the beneficial effect of the present invention is that after liquid is injected through the injection hole, the upper mold seat moves toward the mold cavity, and the upper mold seat and the mold cavity cooperate to complete the injection molding. After completion, the upper mold seat begins to move away from the mold cavity. At this time, the upper mold seat drives the driving mechanism through the supporting mechanism, thereby using the driving mechanism to drive the lower template to move relatively away, so that the injection molded part can be quickly demolded and removed from the base. When the upper mold seat rises to the limit, the driving mechanism returns to its original state, thereby driving the two lower templates to approach and fit together, so that liquid injection can continue to start the next processing, which is convenient for continuous processing and has higher demolding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the upper die base in the present invention.

[0018] Figure 3 It is a structural schematic diagram of the lower die base in the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the base and the supporting mechanism in the present invention.

[0020] Figure 5 It is a cross-sectional view of the driving mechanism portion of the base and the supporting mechanism in the present invention.

[0021] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of area A in the middle.

[0022] Figure 7 It is a structural schematic diagram of the driving mechanism in the present invention.

[0023] Figure 8 It is a cross-sectional view of the support mechanism portion of the base and the support mechanism in the present invention.

[0024] Fig. 9 for Figure 8 Schematic diagram of the enlarged structure of area B in the middle.

[0025] Fig.10 for Figure 8 Schematic diagram of the enlarged structure of the C area in the middle.

[0026] In the figure: 1-base, 11-slide groove, 12-liquid injection hole, 2-support mechanism, 21-lower sleeve, 22-piston rod, 23-mounting pad, 24-exhaust hole, 25-blind hole, 26-sliding guide tube, 27-air vent, 3-upper mold base, 31-upper mounting plate, 32-upper mold plate, 33-upper mold block, 4-lower mold base, 41-lower mold plate, 42-mold cavity, 5-driving mechanism, 51-bellows, 52-air guide tube, 53-sliding gasket, 54-slider, 55-return spring. DETAILED DESCRIPTION

[0027] See also Figure 1-Figure 3In an embodiment of the present invention, a rapid demoulding device for a plastic mold comprises a base 1 and a plurality of supporting mechanisms 2 connected to the base 1, wherein an upper mold base 3 opposite to the base 1 is assembled and connected at one end of the supporting mechanism 2 away from the base 1, and a lower mold base 4 is provided on the base 1 in a sliding and matching manner, wherein the lower mold base 4 comprises two lower mold plates 41 symmetrically and slidingly provided on the base 1, and a mold cavity 42 is provided at the junction of the two lower mold plates 41, and a driving mechanism 5 for driving the lower mold plates 41 to move is embedded in the base 1, and a liquid injection hole 12 corresponding to the mold cavity 42 is provided through the middle of the base 1, when the upper mold base 3 is in a matching state with the mold cavity 42, the two lower mold plates 41 are in a fitted state, and when the upper mold base 3 is away from the mold cavity 42, the upper mold base 3 drives the driving mechanism 5 to drive the two lower mold plates 41 to move relatively away from each other through the supporting mechanism 2, and when the upper mold base 3 moves away from the mold cavity 42 to a limit, the two lower mold plates 41 are relatively close to each other and return to a fitted state.

[0028] During specific use, after liquid is injected through the injection hole 12, the upper mold base 3 moves toward the mold cavity 42, and the upper mold base 3 and the mold cavity 42 cooperate to complete the injection molding. After completion, the upper mold base 3 begins to move away from the mold cavity 42. At this time, the upper mold base 3 drives the driving mechanism 5 through the supporting mechanism 2, thereby using the driving mechanism 5 to drive the lower template 41 to move relatively away, so that the injection molded part can be quickly demolded and removed from the base 1. When the upper mold base 3 rises to the limit, the driving mechanism 5 returns to its original state, thereby driving the two lower templates 41 to approach and fit together, so that liquid injection can continue to start the next processing, which is convenient for continuous processing and has higher demolding efficiency.

[0029] like Figure 1-Figure 4 As shown, the upper mold base 3 includes an upper mounting plate 31, and the support mechanism 2 is connected between the four opposite corners of the upper mounting plate 31 and the base 1. The upper mounting plate 31 is fixedly connected to the side facing the base 1 with an upper mold plate 32 opposite to the lower mold plate 41, and the middle of the upper mold plate 32 is provided with an upper mold plate 33 matching the mold cavity 42. When in use, a hydraulic telescopic mechanism can be installed on the upper mounting plate 31 to drive the upper mounting plate 31 to move relative to the base 1. When the upper mounting plate 31 moves toward the base 1, the upper mold plate 32 fits on the upper surface of the lower mold plate 41. Through the cooperation between the upper mold plate 33 and the mold cavity 42, and the cooperation between the upper mold plate 32 and the lower mold plate 41, injection molding can be achieved. The two lower mold plates 41 are relatively opened, which will not affect the lifting and lowering of the upper mold plate 33. When in use, the power source is based on the hydraulic telescopic mechanism connected above the upper mounting plate 31.

[0030] like Figure 4-Figure 7As shown, the upper end of the base 1 is embedded with a plurality of symmetrically arranged slide grooves 11, and the driving mechanism 5 is installed in the slide grooves 11. The slide grooves 11 are respectively arranged on both sides of the lower template 41, and the extension direction of the slide grooves 11 is consistent with the relative direction of the two lower templates 41, and the output end of the driving mechanism 5 is fixedly connected to the lower template 41. When the upper mounting plate 31 is driven to move toward the base 1, the support mechanism 2 is compressed, the gas is discharged, and the length of the driving mechanism 5 does not change. When the upper mounting plate 31 moves away from the base 1, the support mechanism 2 is stretched. At this time, the driving mechanism 5 is compressed by the negative pressure, so that its output end drives the lower template 41 to move relatively, so as to be relatively far away, so that automatic mold separation can be achieved when the mold is opened, which is convenient for rapid demolding.

[0031] Among them, the driving mechanism 5 includes a bellows 51 and a sliding gasket 53 connected to the two ends of the bellows 51, an air guide tube 52 is arranged between the sliding gasket 53 close to the side of the supporting mechanism 2 and the supporting mechanism 2, a return spring 55 is connected between the two sliding gaskets 53, and the return spring 55 acts on the two sliding gaskets 53 to move relatively apart, the sliding gasket 53 close to the side of the supporting mechanism 2 is fixedly connected to the slide groove 11, and the sliding gasket 53 away from the side of the supporting mechanism 2 is connected to the slide groove 11 in a sliding cooperation, and a slider 54 that slides with the slide groove 11 is fixedly connected to one side of the sliding gasket 53, and the slider 54 is fixedly connected to the lower template 41. The space formed by the bellows 51 and the sliding gasket 53 is connected to the interior of the support mechanism 2. When the support mechanism 2 is compressed, the sliding gasket 53 maintains its extended state, the position of the slider 54 does not move, and the lower template 41 is relatively closed, which is convenient for liquid injection and molding. When the support mechanism 2 is stretched, the air in the space formed by the bellows 51 and the sliding gasket 53 is drawn into the support mechanism 2. At this time, the return spring 55 is compressed, and the slider 54 moves on the slide groove 11, which can drive the two lower templates 41 to move relatively away from each other.

[0032] Further, the support mechanism 2 includes a lower sleeve 21 embedded and fixed at the upper end of the base 1, a cavity is set in the lower sleeve 21, a piston rod 22 is set at the upper end of the lower sleeve 21 in a sliding fit, the lower sleeve 21 and the piston rod 22 are sealed and slidably fitted, the air guide pipe 52 is connected to the lower sleeve 21, and a mounting pad 23 for connecting to the upper mounting plate 31 is fixedly connected at the upper end of the piston rod 22, and the mounting pad 23 can be connected to the upper mounting plate 31 by bolts / screws. With such a setting, the piston rod 22 can be driven to slide relative to the lower sleeve 21 by the lifting and lowering of the upper mounting plate 31, so as to drive the space composed of the bellows 51 and the sliding pad 53 to expand and contract, so as to drive the lower template 41 to move relatively.

[0033] like Figure 7-10As shown, in order to give the injection time and keep the lower template 41 stable during the pressing process of the upper mounting plate 31, the lower end of the lower sleeve 21 is connected with an exhaust hole 24, and a one-way valve connected from the inside of the lower sleeve 21 to the outside is arranged in the exhaust hole 24. The exhaust hole 24 is arranged through the lower end of the base 1, and the lower end of the lower sleeve 21 is also connected with a connecting component connecting the inside and the outside of the lower sleeve 21. In this way, when the piston rod 22 moves and compresses relative to the lower sleeve 21, the gas is discharged through the exhaust hole 24, and the gas When the gas enters the space formed by the bellows 51 and the sliding gasket 53 through the air guide pipe 52, because the sliding gasket 53 is relatively far away and cannot expand anymore, this part of gas will only keep the lower template 41 pressed tightly. When the upper mounting plate 31 is away from the base 1, the gas in the space formed by the bellows 51 and the sliding gasket 53 is drawn into the lower sleeve 21 through the air guide pipe 52. The movement of the sliding gasket 53 drives the lower template 41 to move, so that the two lower templates 41 are relatively far away from each other, and the molds are separated synchronously when the mold is opened, and the demolding speed is faster. When the upper mounting plate 31 moves to the extreme position, the connecting assembly is ventilated, so that the inside and outside of the lower sleeve 21 are connected. At this time, the space formed by the bellows 51 and the sliding gasket 53 is no longer affected by negative pressure, and can be restored to the state where the two sliding gaskets 53 are separated under the action of the restoring force of the return spring 55. In this way, the lower template 41 is molded again, so that liquid injection can continue at this time, which is convenient for the next processing. The position of the upper mounting plate 31 will not be affected in this process, and after the gas is replenished in the lower sleeve 21, the upper mounting plate 31 is pressed down again without affecting the state of the lower template 41.

[0034] In order to achieve the above state, the connecting component includes a sliding conduit 26 that is set through the bottom of the lower sleeve 21, and the piston rod 22 is embedded with a blind hole 25 on the side facing the lower sleeve 21. The lower end of the sliding conduit 26 passes through the bottom of the base 1 and is connected to the outside. The upper end of the sliding conduit 26 is closed, and the upper side of the sliding conduit 26 is set with a venting port 27. When the upper mounting plate 31 rises to the limit position, the venting port 27 is connected to the inside of the lower sleeve 21. The blind hole 25 and the sliding conduit 26 are correspondingly arranged and sealed and slidably adapted. When the upper mounting plate 31 is pressed down, the venting port 27 gradually enters the blind hole 25, so that the inside of the lower sleeve 21 can only pass through The exhaust hole 24 is connected to the outside world in one direction, so that the gas in the lower sleeve 21 can only be discharged to the outside through the exhaust hole 24 during the downward pressing of the upper mounting plate 31, and when the upper mounting plate 31 moves upward, before reaching the limit position, the venting port 27 is in the blind hole 25, so the expansion of the space between the lower sleeve 21 and the piston rod 22 can only draw the gas in the space between the bellows 51 and the sliding gasket 53 into the lower sleeve 21, and when the upper mounting plate 31 reaches the limit position, the venting port 27 is connected to the lower sleeve 21, so that the lower sleeve 21 can be connected to the outside world through the sliding guide tube 26, and the return spring 55 can elastically restore the state of the two sliding gaskets 53 being relatively far apart. Such a setting can allow the lower template 41 to have multiple states when the upper mounting plate 31 rises, thereby facilitating demoulding, and at the same time, facilitating subsequent liquid injection processing.

Claims

1. A rapid demoulding device for a plastic mold, comprising a base and a plurality of supporting mechanisms connected to the base, wherein an upper mold base opposite to the base is assembled and connected to one end of the supporting mechanism away from the base, and a lower mold base is slidably connected and arranged on the base, characterized in that: The lower mold base comprises two lower mold plates symmetrically and slidably arranged on the base, a mold cavity is provided at the junction of the two lower mold plates, a driving mechanism for driving the lower mold plates to move is embedded in the base, and a liquid injection hole corresponding to the mold cavity is provided through the middle of the base; When the upper mold base and the mold cavity are in a matching state, the two lower mold plates are in a fitted state. When the upper mold base is away from the mold cavity, the upper mold base drives the driving mechanism to drive the two lower mold plates to move relatively away from each other through the supporting mechanism. When the upper mold base moves away from the mold cavity to the limit, the two lower mold plates move relatively close to each other and return to a fitted state. The upper mold base includes an upper mounting plate, the support mechanism is connected between the upper mounting plate and four opposite corners of the base, an upper mold plate opposite to the lower mold plate is fixedly connected to one side of the upper mounting plate facing the base, and an upper mold plate matching the mold cavity is provided in the middle of the upper mold plate; The upper end of the base is embedded with a plurality of symmetrically arranged slide grooves, the drive mechanism is installed in the slide grooves, the slide grooves are respectively arranged on both sides of the lower template, and the extending direction of the slide grooves is consistent with the relative direction of the two lower templates, and the output end of the drive mechanism is fixedly connected to the lower template; The driving mechanism includes a bellows and sliding washers connected to both ends of the bellows, an air guide pipe is provided between the sliding washers close to the support mechanism and the support mechanism, and a return spring is provided between the two sliding washers, and the return spring acts to move the two sliding washers away from each other; The sliding gasket on the side close to the support mechanism is fixedly connected to the slide groove, and the sliding gasket on the side away from the support mechanism is connected to the slide groove in a sliding cooperation manner. A sliding block that is slidably cooperated with the slide groove is fixedly connected to one side of the sliding gasket, and the sliding block is fixedly connected to the lower template; The supporting mechanism includes a lower sleeve embedded and fixed at the upper end of the base, a cavity is set in the lower sleeve, a piston rod is slidably connected to the upper end of the lower sleeve, the lower sleeve and the piston rod are sealed and slidably matched, the air guide tube is connected to the lower sleeve, and a mounting pad for connecting to the upper mounting plate is fixedly connected to the upper end of the piston rod.

2. A rapid demoulding device for a plastic mold according to claim 1, characterized in that: The lower end of the lower sleeve is connected to a vent hole, in which a one-way valve is provided that connects from the inside of the lower sleeve to the outside. The vent hole passes through the lower end of the base, and the lower end of the lower sleeve is also connected to a connecting component that connects the inside and outside of the lower sleeve.

3. A rapid demoulding device for a plastic mold according to claim 2, characterized in that: The connecting component includes a sliding conduit that passes through the bottom of the lower sleeve, a blind hole is embedded in the piston rod on the side facing the lower sleeve, the lower end of the sliding conduit passes through the bottom of the base and is connected to the outside, the upper end of the sliding conduit is closed, and an air vent is passed through the upper side of the sliding conduit.

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