Rapid injection mold system and injection molding method thereof

Abstract

The invention relates to the technical field of injection molds, in particular to a rapid injection mold system and an injection molding method thereof.The rapid injection mold system comprises a bottom plate, a plurality of first stand columns are fixed to the three corners of the top face of the bottom plate, a second stand column is rotationally connected to the other corner of the top face of the bottom plate, and a transmission groove is formed in the outer side of the second stand column; a rectangular frame is fixed to the top face of the bottom plate, a lower die base is fixed to the top of the rectangular frame, a top plate is slidably connected between the first stand columns and the second stand columns, and the top plate is in transmission connection with the transmission groove. According to the injection mold, a product is adsorbed and fixed through a suction cup on the demolding and material taking mechanism and is taken out upwards, the product is pushed upwards in cooperation with a demolding rod, rapid demolding of the product can be improved, and in the mold closing process, a second stand column can drive the demolding and material taking mechanism to rotate from the position above the lower mold base to leave the injection mold; demolded products can be conveniently and automatically taken out of the injection mold, and the products can be rapidly taken out of the injection mold.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, and specifically to a rapid injection mold system and an injection method thereof. Background Art

[0002] An injection mold is a tool used in the injection molding process, which can process plastic raw materials into plastic products with specific shapes. An injection mold generally includes an upper mold base and a lower mold base. The upper mold base is fixedly installed with an injection molding machine. A demolding rod capable of assisting demolding is installed in the lower mold base. During injection molding, the injection molding machine injects molten plastic raw materials into the mold cavity of the upper and lower mold bases at high pressure. After the upper and lower mold bases are cooled and solidified, a plastic formed product is obtained;

[0003] Although the demolding rod can assist in ejecting the product on the lower mold base from the mold base during demolding, the product ejected from the mold base generally still needs to be manually removed from the mold, which is not conducive to realizing the automatic conveying of the plastic formed product from the mold quickly. Moreover, for plastic formed products with special shapes and large areas, it is not easy to eject the product from multiple positions at the bottom of the product simultaneously with a limited number of demolding rods installed. In the product area far from the demolding rod, due to insufficient ejection force, the product may be deformed, torn or damaged. Summary of the Invention

[0004] The purpose of the present invention is to provide a rapid injection mold system and an injection method thereof to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A rapid injection mold system, comprising:

[0007] A bottom plate, on the top surface of which a plurality of first columns are fixed and a second column is rotatably arranged. A transmission groove is provided on the outer side of the second column, and a first rectangular frame is fixed on the top surface of the bottom plate;

[0008] A lower mold base, fixed on the top of the rectangular frame;

[0009] A top plate, slidably arranged between a plurality of first columns, the top plate is in transmission connection with the transmission groove, and an upper mold base is fixed on the bottom surface of the top plate;

[0010] Two lead screws, both are screwed to the top plate;

[0011] A demolding and material taking mechanism, arranged on the outer side of the second column, which can not only assist the product to demold from the lower mold base, but also take out the product from the injection mold. The demolding and material taking mechanism includes an L-shaped column fixed to the second column. An electric push rod two is fixed on the top of the L-shaped column, and a cross-shaped rod is fixed to the output end of the electric push rod two. Suction cups are fixedly installed around the cross-shaped rod.

[0012] Furthermore, the transmission groove includes a curved groove and a linear groove that are communicatively opened on the outer side of the second column. A transmission column is fixed inside the top plate, and both the curved groove and the linear groove are slidably clamped with the transmission column.

[0013] Furthermore, a cross beam fixed to the second electric push rod is fixed at the top of the L-shaped column. A control box is fixed between the output end of the second electric push rod and the cross-shaped rod. A negative pressure pump is fixed inside the control box, and the negative pressure pump is communicatively installed with the suction cup through a hose.

[0014] Furthermore, a first electric push rod is embedded and fixed inside the bottom plate, and the output end of the first electric push rod is fixed with a demolding rod.

[0015] Furthermore, a waterproof cover is sleeved and fixed on the outer side of the first electric push rod, and motors capable of driving the lead screw to rotate are fixed at both ends of the bottom plate.

[0016] Furthermore, an injection molding interface is installed on the top of the top plate, and a feeding hole is opened in the middle of the lower mold base.

[0017] Furthermore, a rectangular groove is opened inside the lower mold base. Two conduction pipes that are both communicatively connected to the rectangular groove are fixed to the bottom surface of the lower mold base. Two connecting pipes are communicatively fixed to the outer side of the rectangular frame.

[0018] The present invention also discloses an injection molding method, including the following steps:

[0019] Step 1: Closing the mold. The top plate 300 drives the upper mold base 310 to move downward, so that the upper mold base 310 and the lower mold base 200 are closed. During this process, the second column 120 drives the demolding and material taking mechanism 500 to rotate to the outside of the mold.

[0020] Step 2: Injection molding. The injection nozzle of an external injection molding machine injects raw materials into the mold cavity of the lower mold base 200 through the injection molding interface 330.

[0021] Step 3: Cooling. Water is conveyed to the rectangular frame 130 through the connecting pipe, so that the bottom of the lower mold base 200 can be cooled by water. The conduction pipe 312 conducts the water in the rectangular frame 130 into the rectangular groove 311 inside the upper mold base 310 to cool and dissipate heat from the upper mold base 310.

[0022] Step 4: Draining water. The water inside the rectangular frame 130 and the rectangular groove 311 is drained through the connecting pipe.

[0023] Step 5: Opening the mold. The top plate 300 drives the upper mold base 310 to move upward, so that the upper mold base 310 and the lower mold base 200 are separated. During this process, the second column 120 drives the demolding and material taking mechanism 500 to rotate above the lower mold base 200, and the suction cup 550 on the demolding and material taking mechanism 500 adsorbs and fixes the product.

[0024] Step 6: Demoulding. The demoulding rod 151 moves upward to jack up from the bottom of the product. At the same time, the suction cups 550 pull upward from the surface of the product, enabling the product to be quickly demoulded.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. By rotatably connecting a second column on the bottom plate, and providing a curved groove and a linear groove on the second column for the transmission column on the top plate to slide, during mold opening, the top plate moves upward along the second column to the top of the second column. During this process, the transmission column slides along the linear groove into the curved groove, so that the second column can rotate clockwise by 120 degrees during demoulding, enabling the second column to drive the L-shaped column to rotate above the lower mold base. The output end of the second electric push rod extends to move multiple suction cups on the cross-shaped rod downward to abut against the product, facilitating the adsorption and fixation of the product. Then, the output end of the second electric push rod shortens to lift the product upward from different positions on the surface of the product by the multiple suction cups to remove it from the lower mold base, and cooperate with the demoulding rod to push the product upward from the bottom surface of the product, facilitating the quick demoulding of the product, realizing that in the area where there is no demoulding rod jacking on the bottom surface of the product, there are suction cups to pull the product upward from the top of this area of the product, effectively preventing the product from being deformed and damaged during demoulding to a certain extent.

[0027] 2. By adsorbing and fixing the product on the lower mold base with multiple suction cups and separating it from the lower mold base, during mold closing, the top plate moves downward along the second column. During this process, the transmission column on the top plate slides from the curved groove into the linear groove, so that the second column drives the L-shaped column to rotate counterclockwise by 120 degrees, enabling the multiple suction cups to automatically move out the adsorbed and fixed product from the injection mold, eliminating the need for manual removal of the product from the injection mold. By combining quick demoulding with automatically removing the demoulded product, it is convenient for the injection mold to quickly complete the injection work, which is beneficial to improving the production efficiency of the injection mold. Description of the Drawings

[0028] Figure 1 is the overall structural schematic diagram of the present invention;

[0029] Figure 2 is the structural schematic diagram of the present invention in the mold-closed state;

[0030] Figure 3 is the structural schematic diagram of the second column and the demoulding and material-taking mechanism in the present invention;

[0031] Figure 4 is the internal structural schematic diagram of the rectangular frame in the present invention;

[0032] Figure 5 is the structural schematic diagram of the bottom film base in the present invention.

[0033] In the figure: 100, bottom plate; 110, first column; 120, second column; 121, curved groove; 122, straight groove; 130, rectangular frame; 140, motor; 150, first electric push rod; 151, demolding rod; 160, waterproof cover; 200, lower mold base; 300, top plate; 310, upper mold base; 311, rectangular groove; 312, conduction pipe; 320, transmission column; 330, injection molding interface; 400, lead screw; 500, demolding and material taking mechanism; 510, L-shaped column; 520, second electric push rod; 530, control box; 540, cross-shaped rod; 541, round hole; 550, suction cup. Detailed implementation mode

[0034] 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 efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1, please refer to Figure 1 - Figure 5 In the embodiment of the present invention, a rapid injection molding die system includes a bottom plate 100. A plurality of first columns 110 are fixed at three corners on the top surface of the bottom plate 100. A second column 120 is rotatably connected to the other corner on the top surface of the bottom plate 100. A transmission groove is formed on the outer side of the second column 120. A rectangular frame 130 is fixed on the top surface of the bottom plate 100. A lower mold base 200 is fixed on the top of the rectangular frame 130. A top plate 300 is slidably connected between the plurality of first columns 110 and the second column 120. The top plate 300 is in transmission connection with the transmission groove. An upper mold base 310 is fixed on the bottom surface of the top plate 300. Lead screws 400 are screwed at both ends of the top plate 300. A demolding and material taking mechanism 500 is fixed on the outer side of the second column 120. The demolding and material taking mechanism 500 includes an L-shaped column 510 fixed to the second column 120. A second electric push rod 520 is fixed on the top of the L-shaped column 510. A cross-shaped rod 540 is fixed to the output end of the second electric push rod 520. A suction cup 550 is installed and fixed in the front, rear, left, and right directions of the cross-shaped rod 540.

[0036] Specifically, by opening a transmission groove on the outer side of the second column 120, when the top plate 300 slides up and down with the upper mold base 310 along the second column 120 for demolding and mold closing, the transmission column 320 on the top plate 300 drives the second column 120 to rotate clockwise and counterclockwise through the transmission groove, so that the demolding and material taking mechanism 500 can automatically move to the top of the lower mold base 200 during demolding, and use the suction cup 550 to fix the product and take it out upward, and cooperate with the demolding rod 151 to push the product upward, which is conducive to improving the rapid demolding of the product. During the mold closing process, the second column 120 can drive the demolding and material taking mechanism 500 to rotate from the top of the lower mold base 200 to leave the injection mold, so as to automatically take the demolded product out of the injection mold, save manual removal of the product from the injection mold, and facilitate the rapid removal of the product from the injection mold.

[0037] like Figure 1 As shown, in this embodiment, a crossbeam is fixed between the tops of two of the columns 110, and a crossbeam is also fixed on the top of another column 110. One end of the crossbeam is rotatably connected to the top of the column 2 120, so that the columns 110 and 120 both slide through the top plate 300, so that the top plate 300 can move up and down stably.

[0038] like Figure 3 As shown, in this embodiment, the transmission groove includes a curved groove 121 and a straight groove 122 which are connected and opened on the outside of the second column 120, and a transmission column 320 is fixed inside the top plate 300, and the curved groove 121 and the straight groove 122 are both slidably engaged with the transmission column 320.

[0039] In this embodiment, when the top plate 300 slides up and down between the curved groove 121 and the straight groove 122 with the transmission column 320, the column 120 can rotate clockwise or counterclockwise, so as to drive the demoulding and material taking mechanism 500 to change its position inside and outside the injection mold.

[0040] like Figure 2 and Figure 3 As shown, in this embodiment, a crossbeam fixed to the electric push rod 520 is fixed on the top of the L-shaped column 510, a control box 530 is fixed between the output end of the electric push rod 520 and the cross-shaped rod 540, a negative pressure pump is fixed inside the control box 530, and the negative pressure pump is connected to the suction cup 550 through a hose and installed.

[0041] In this embodiment, when it is necessary to use the suction cup 550 to adsorb and fix the product, the output end of the electric push rod 520 is first extended to make multiple suction cups 550 abut the product, and then the negative pressure pump sucks the air inside the multiple suction cups 550 through multiple hoses. Under the action of negative pressure, the suction cups 550 adsorb and fix the product, wherein the negative pressure pump and the suction cup 550 are existing technical components, and the working principle is described in detail here.

[0042] In this embodiment, a plurality of circular holes 541 are equidistantly arranged on the cross-shaped rod. The circular holes 541 are screwed and installed with the pipes at the top of the suction cups 550, so that the suction cups 550 can be installed at different positions on the cross-shaped frame 540, facilitating the suction cups 550 to pre-adjust the installation position according to the size of the injection-molded product, and facilitating the suction cups 550 to adsorb and fix injection-molded products of different sizes in the later stage. The specific product size and shape are determined by the mold cavity on the lower mold base 200. Among them, the lower mold base 200, the upper mold base 310 and the mold cavity are all of the prior art and will not be elaborated here in detail.

[0043] As Figure 4 shown, in this embodiment, an electric push rod 150 is fixedly embedded inside the bottom plate 100. The output end of the electric push rod 150 is fixed with a demolding rod 151. During demolding, the output end of the electric push rod 150 extends to push the demolding rod 151 out of the mold cavity, facilitating the demolding of the injection-molded product from the lower mold base 200.

[0044] As Figure 2 shown, in this embodiment, motors 140 capable of driving the screw rod 400 to rotate are fixed at both ends of the bottom plate 100. The output ends of the motors 140 driving the screw rod 400 to rotate forward and backward can make the top plate 300 drive the upper mold base 310 to move up and down along the first column 110 and the second column 120, achieving the effects of mold closing and mold opening.

[0045] As Figure 1 、 Figure 2 、As shown in 5, in this embodiment, an injection interface 330 is installed on the top of the top plate 300, and a feed hole is opened in the middle of the upper mold base 310, so that the injection nozzle of an external injection molding machine can inject raw materials into the mold cavity through the injection interface 330 and the feed hole. This part is of the prior art and the specific injection principle will not be elaborated here in detail.

[0046] Embodiment 2, on the basis of Embodiment 1, in order to enable the upper mold base 310 and the lower mold base 200 to dissipate heat quickly.

[0047] As Figure 4 and Figure 5 shown, in this embodiment, a rectangular groove 311 is opened inside the upper mold base 310. Two conduction pipes 312 that are both communicated with the rectangular groove 311 are fixed to the bottom surface of the upper mold base 310. Two connection pipes are fixedly communicated with the outside of the rectangular frame 130.

[0048] In this embodiment, during the cooling process of the injection mold, a pipeline for pumping external water or other cooling media can be connected to a connecting pipe, and the other connecting pipe is blocked, so that the inside of the rectangular frame 130 is filled with water, and the water can dissipate heat from the bottom of the lower mold base 200. After the mold is closed, the two conduction pipes 312 on the upper mold base 310 are inserted into the inside of the rectangular frame 130 through the jacks on the lower mold base 200. The two conduction pipes 312 can conduct the water in the rectangular frame 130 into the rectangular groove 311 of the upper mold base 310, realizing cooling and heat dissipation for both the lower mold base 200 and the upper mold base 310 at the same time. Before mold opening, the hot water inside the rectangular frame 130 is pumped out through the other connecting pipe, and the water inside the upper mold base 310 converges into the rectangular frame 130 and is pumped away, and then the upper mold base 310 is lifted to open the mold.

[0049] In this embodiment, a waterproof cover 160 is sleeved and fixed on the outside of the first electric push rod 150 to prevent water from entering the working area of the electric push rod. Among them, the bottom surface of the waterproof cover 160 is fixed to the bottom plate 100, and the top surface of the waterproof cover 160 is fixed to the upper mold base 310.

[0050] Please refer to Figure 1 - Figure 5 , the injection method of the rapid injection mold of the present invention specifically includes the following steps:

[0051] Step 1: Close the mold. The top plate 300 drives the upper mold base 310 to move downward to close the upper mold base 310 and the lower mold base 200. During this process, the second column 120 drives the demolding and material taking mechanism 500 to rotate to the outside of the mold.

[0052] Step 2: Injection molding. The injection nozzle of an external injection molding machine injects raw materials into the mold cavity of the lower mold base 200 through the injection interface 330.

[0053] Step 3: Cooling. Water is conveyed to the rectangular frame 130 through the connecting pipe, so that the bottom of the lower mold base 200 can be cooled by water, and the conduction pipe 312 conducts the water in the rectangular frame 130 into the rectangular groove 311 of the upper mold base 310 to cool and dissipate heat from the upper mold base 310.

[0054] Step 4: Drainage. The water inside the rectangular frame 130 and the rectangular groove 311 is discharged through the connecting pipe.

[0055] Step 5: Open the mold. The top plate 300 drives the upper mold base 310 to move upward to separate the upper mold base 310 from the lower mold base 200. During this process, the second column 120 drives the demolding and material taking mechanism 500 to rotate above the lower mold base 200, and the suction cup 550 on the demolding and material taking mechanism 500 adsorbs and fixes the product.

[0056] Step 6: Demolding. The demolding rod 151 moves upward to jack up from the bottom of the product, and at the same time, the suction cup 550 pulls up from the surface of the product to quickly demold the product.

[0057] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0058] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rapid injection mold system, characterized in that: include: A bottom plate (100), a plurality of first columns (110) and a rotatable second column (120) are fixed on the top surface of the bottom plate (100), a transmission groove is provided on the outer side of the second column (120), and a rectangular frame (130) is fixed on the top surface of the bottom plate (100); A lower die base (200) is fixed on the top of the rectangular frame (130); A top plate (300) is slidably arranged between the plurality of upright posts (110), the top plate (300) is in driving connection with the driving groove, and an upper die seat (310) is fixed to the bottom surface of the top plate (300); There are two screw rods (400), both of which are screwed together with the top plate (300); The demoulding and material taking mechanism (500) is arranged on the outer side of the second column (120), and can not only assist the product in demoulding from the lower mold base (200), but also can take the product out of the injection mold. The demoulding and material taking mechanism (500) includes an L-shaped column (510) fixed to the second column (120), and an electric push rod (520) is fixed on the top of the L-shaped column (510), and a cross-shaped rod (540) is fixed on the output end of the second electric push rod (520), and suction cups (550) are installed and fixed around the four sides of the cross-shaped rod (540).

2. The rapid injection mold system according to claim 1, characterized in that: The transmission groove comprises a curved groove (121) and a straight groove (122) which are connected and opened on the outside of the second column (120); a transmission column (320) is fixed inside the top plate (300); and the curved groove (121) and the straight groove (122) are both slidably engaged with the transmission column (320).

3. The rapid injection mold system according to claim 1, characterized in that: A crossbeam fixed to the second electric push rod (520) is fixed on the top of the L-shaped column (510), a control box (530) is fixed between the output end of the second electric push rod (520) and the cross-shaped rod (540), a negative pressure pump is fixed inside the control box (530), and the negative pressure pump is connected and installed with the suction cup (550) through a hose.

4. The rapid injection mold system according to claim 1, characterized in that: An electric push rod 1 (150) is embedded and fixed inside the base plate (100), and a demoulding rod (151) is fixed to the output end of the electric push rod 1 (150).

5. The rapid injection mold system according to claim 4, characterized in that: A waterproof cover (160) is sleeved and fixed on the outer side of the electric push rod 1 (150), and motors (140) capable of driving the screw rod (400) to rotate are fixed on both ends of the bottom plate (100).

6. The rapid injection mold system according to claim 1, characterized in that: An injection molding interface (330) is installed on the top of the top plate (300), and a feed hole is provided in the middle of the lower mold base (310).

7. The rapid injection mold system according to claim 1 or 6, characterized in that: A rectangular groove (311) is provided inside the lower die base (310), two conducting tubes (312) both in communication with the rectangular groove (311) are fixed on the bottom surface of the lower die base (310), and two connecting tubes are fixed and in communication with the outer side of the rectangular frame (130).

8. An injection molding method, characterized in that: Using the rapid injection mold system as described in any one of claims 1-7, comprising the following steps: Step 1: mold closing, the top plate 300 moves down with the upper mold base 310, so that the upper mold base 310 and the lower mold base 200 are molded together. During this process, the second column 120 drives the demoulding and material taking mechanism 500 to rotate to the outside of the mold; Step 2: Injection molding: the injection nozzle of an external injection molding machine injects the raw material into the mold cavity of the lower mold base 200 through the injection molding interface 330; Step 3: Cooling: water is delivered to the rectangular frame 130 through the connecting pipe so that the bottom of the lower mold base 200 can be cooled by water. The conducting pipe 312 conducts the water of the rectangular frame 130 to the inside of the rectangular groove 311 of the upper mold base 310 to cool and dissipate heat for the upper mold base 310. Step 4: Draining water, draining the water inside the rectangular frame 130 and the rectangular groove 311 through the connecting pipe; Step 5: Open the mold. The top plate 300 moves up with the upper mold base 310 to separate the upper mold base 310 from the lower mold base 200. During this process, the second column 120 drives the demoulding and material taking mechanism 500 to rotate to the top of the lower mold base 200, and the suction cup 550 on the demoulding and material taking mechanism 500 absorbs and fixes the product. Step 6: Demolding, the demoulding rod 151 moves upward to lift up from the bottom of the product, and at the same time, the suction cup 550 pulls upward from the surface of the product to quickly demold the product.

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