Plastic bottle blank extrusion molding device

Abstract

The utility model provides a plastic bottle blank extrusion molding device. Relates to the technical field of bottle preform extrusion. The plastic bottle blank extrusion molding device comprises an extrusion die and a supporting table, a plurality of die cavities are formed in the top of the extrusion die, a top sealing piece is arranged above the extrusion die, a plurality of die cores are fixedly installed at the bottom of the top sealing piece and are matched with the die cavities correspondingly, two cooling cavities are formed in the extrusion die, and the supporting table is arranged on the supporting table. A cooling liquid box and a high-pressure pump are arranged below the supporting table, one end of a liquid pumping pipe is fixedly installed on a liquid inlet port of the high-pressure pump, the other end of the liquid pumping pipe is fixedly connected with the bottom of the cooling liquid box, a transverse pipe is fixedly installed on a liquid outlet port of the high-pressure pump, and two liquid guide pipes are fixedly installed on the transverse pipe. The plastic bottle preform extrusion molding device provided by the utility model can prevent the bottle preform from being adhered in the mold cavity, and ensures the discharging smoothness.

Description

TECHNICAL FIELD

[0001] The utility model relates to bottle embryo extrusion technical field especially relates to a plastic bottle embryo extrusion forming device. BACKGROUND

[0002] The plastic bottle embryo refers to the plastic product that is made in the plastic bottle production and processing process, is not processed, only has the preliminary shape, does not have the function of finished product bottle and is made, and this kind of bottle embryo is usually extruded through extrusion process, and then is made into finished product shape through blow molding process.

[0003] However, in the extrusion process, because the temperature in the extrusion process is high, the extruded bottle embryo is easy to stick in the mold cavity of the mold, which directly affects the normal discharging process.

[0004] Therefore, it is necessary to provide a new plastic bottle embryo extrusion forming device to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problem to provide a plastic bottle embryo extrusion forming device that can prevent the bottle embryo from sticking in the mold cavity and ensure the smoothness of discharging.

[0006] In order to solve the above technical problems, the plastic bottle embryo extrusion forming device provided by the utility model comprises: an extrusion mold and a supporting table, a plurality of mold cavities are formed in the top of the extrusion mold, a top sealing piece is arranged above the extrusion mold, a plurality of mold cores are fixedly installed at the bottom of the top sealing piece, the plurality of mold cores are respectively matched with the plurality of mold cavities, two cooling cavities are formed in the extrusion mold, a cooling liquid tank and a high-pressure pump are arranged below the supporting table, one end of a liquid suction pipe is fixedly installed on the liquid inlet port of the high-pressure pump, the other end of the liquid suction pipe is fixedly connected with the bottom of the cooling liquid tank, a horizontal pipe is fixedly installed on the liquid outlet port of the high-pressure pump, two liquid guide pipes are fixedly installed on the horizontal pipe, the top ends of the two liquid guide pipes are in contact with one side of the extrusion mold, and the ports of the two liquid guide pipes are respectively communicated with the inlets of the two cooling cavities, a connecting frame is arranged above the top sealing piece, a first air cylinder is fixedly installed on the bottom inner wall of the connecting frame, the output shaft of the first air cylinder extends to the bottom of the connecting frame and is movably connected with the bottom of the connecting frame, an outer fixing frame is fixedly installed on the output shaft of the first air cylinder, the bottom of the outer fixing frame is fixedly connected with the top sealing piece, three guide columns are slidably installed on the top sealing piece, the same demolding strip is fixedly installed at the bottom ends of the three guide columns, the plurality of mold cores penetrate through the demolding strip and are slidably connected with the demolding strip, the same connecting strip is fixedly installed at the top ends of the three guide columns, and the bottom of the connecting strip is in contact with the top sealing piece.

[0007] Preferably, two liquid discharge pipes are fixedly installed on the side of the extrusion die away from the liquid guide pipe, and the two liquid discharge pipes are respectively connected with the outlets of the two cooling cavities.

[0008] Preferably, a long box is arranged above the connecting frame, a horizontal lead screw is rotatably arranged in the long box, a horizontal sliding seat is threadedly arranged on the horizontal lead screw, and the bottom of the horizontal sliding seat is fixedly connected with the connecting frame.

[0009] Preferably, a motor is fixedly arranged on the outer wall of one side of the long box, the output shaft of the motor is fixedly connected with one end of the horizontal lead screw, two connecting folding strips are fixedly arranged on one side of the support table, and the top of the long box is fixedly connected with the two connecting folding strips.

[0010] Preferably, an inner fixing frame is fixedly arranged on the top of the top sealing piece, a second air cylinder is fixedly arranged on the top of the inner fixing frame, and the output shaft of the second air cylinder penetrates through the top of the inner fixing frame and is movably connected with the top of the inner fixing frame.

[0011] Preferably, a receiving box is arranged on the top of the support table.

[0012] Preferably, two stable rods are fixedly arranged on one side of the support table, and the ends of the two stable rods are fixedly connected with the transversely arranged pipe.

[0013] Compared with the related art, the plastic bottle embryo extrusion molding device has the following beneficial effects:

[0014] The plastic bottle embryo extrusion molding device provided by the utility model has the advantages that two cooling cavities are arranged on the extrusion die, the high-pressure pump can be used to draw the cooling liquid into the cooling cavities, the bottle embryo that is extruded can be indirectly cooled and shrunk, and the bottle embryo is tightly wrapped on the die core, so that the bottle embryo material in the multiple die cavities can be completely taken out without sticking, the demolding strip is driven downward by the output shaft of the second air cylinder, the bottle embryo wrapped on the die core can be quickly taken off and falls into the receiving box, the multiple bottle embryos can be quickly taken off at one time, the continuity of taking the material is improved, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The structure diagram of a preferred embodiment of the plastic bottle embryo extrusion molding device provided by the utility model is shown.

[0016] Figure 2 The rear view structure diagram of the utility model is shown.

[0017] Figure 3 The structure diagram of the extrusion die in the utility model is shown.

[0018] Figure 4 It is the cross section structure schematic view of the mould cavity in the utility model;

[0019] Figure 5 It is the cross section structure schematic view of the cooling cavity in the utility model;

[0020] Figure 6 It is the connecting structure schematic view of the transverse pipe and the liquid guide pipe in the utility model;

[0021] Figure 7 It is the cross section structure schematic view of the long box in the utility model;

[0022] Marked number in the drawing: 1, extrusion mould; 2, mould cavity; 3, top sealing sheet; 4, mould core; 5, cooling cavity; 6, support table; 7, cooling liquid tank; 8, high-pressure pump; 9, liquid suction pipe; 10, transverse pipe; 11, liquid guide pipe; 12, liquid discharge pipe; 13, long box; 14, horizontal screw; 15, horizontal slide; 16, connecting frame; 17, first air cylinder; 18, outer fixing frame; 19, inner fixing frame; 20, second air cylinder; 21, connecting strip; 22, guide column; 23, demoulding strip; 24, material receiving tank. DETAILED DESCRIPTION

[0023] The utility model will be further explained in connection with the drawings and embodiments.

[0024] Please combine with reference to Figures 1-7The utility model provides a plastic bottle embryo extrusion forming device, which comprises an extrusion die 1 and a support table 6, wherein a receiving box 24 is arranged on the top of the support table 6 to receive the extruded bottle embryo, a plurality of die cavities 2 are formed on the top of the extrusion die 1, a top cover 3 is arranged above the extrusion die 1, a plurality of die cores 4 are fixedly installed on the bottom of the top cover 3, the plurality of die cores 4 are matched with the plurality of die cavities 2 respectively, and a gap is formed between the die core 4 and the inner wall of the die cavity 2 after the die core 4 is inserted into the die cavity 2, so that an extrusion space is provided for the extrusion of the bottle embryo, two cooling cavities 5 are formed on the extrusion die 1, a cooling liquid tank 7 and a high-pressure pump 8 are arranged below the support table 6, one end of a suction pipe 9 is fixedly installed on the liquid inlet of the high-pressure pump 8, the other end of the suction pipe 9 is fixedly connected with the bottom of the cooling liquid tank 7, a horizontal pipe 10 is fixedly installed on the liquid outlet of the high-pressure pump 8, two liquid guide pipes 11 are fixedly installed on the horizontal pipe 10, the top ends of the two liquid guide pipes 11 are in contact with one side of the extrusion die 1, the ports of the two liquid guide pipes 11 are respectively communicated with the inlets of the two cooling cavities 5, the cooling liquid can be smoothly delivered into the cooling cavities 5, two liquid discharge pipes 12 are fixedly installed on the side of the extrusion die 1 away from the liquid guide pipes 11, the two liquid discharge pipes 12 are respectively communicated with the outlets of the two cooling cavities 5, and the used cooling liquid can be smoothly discharged, a connecting frame 16 is arranged above the top cover 3, a first air cylinder 17 is fixedly installed on the inner wall of the bottom of the connecting frame 16, the output shaft of the first air cylinder 17 extends to the bottom of the connecting frame 16 and is movably connected with the bottom of the connecting frame 16, an outer fixing frame 18 is fixedly installed on the output shaft of the first air cylinder 17, the bottom of the outer fixing frame 18 is fixedly connected with the top cover 3, three guide columns 22 are slidably installed on the top cover 3, the bottom ends of the three guide columns 22 are fixedly installed with a same demolding strip 23, the plurality of die cores 4 penetrate through the demolding strip 23 and are slidably connected with the demolding strip 23, the top ends of the three guide columns 22 are fixedly installed with a same connecting strip 21, in the initial state, the bottom of the connecting strip 21 is in contact with the top cover 3, an inner fixing frame 19 is fixedly installed on the top of the top cover 3, a second air cylinder 20 is fixedly installed on the top of the inner fixing frame 19, the output shaft of the second air cylinder 20 penetrates through the top of the inner fixing frame 19 and is movably connected with the top of the inner fixing frame 19, when the top cover 3 with the die cores 4 is lowered, the die cores 4 are inserted into the die cavities 2, and finally the demolding strip 23 is in contact with the top of the extrusion die 1, and the top cover 3 is in contact with the top of the demolding strip 23, after the extruded bottle embryo is taken out, the connecting strip 21 can be lowered by the extension of the output shaft of the second air cylinder 20, and the bottle embryo can be forcibly taken out by the demolding strip 23, so that the plurality of bottle embryos can be quickly demolded.

[0025] In the above manner, in order to horizontally take the mold core 4 with the bottle embryo to the upper side of the receiving box 24, a long box 13 is arranged above the connecting frame 16, a horizontal screw rod 14 is rotatably arranged in the long box 13, a motor is fixedly arranged on one side outer wall of the long box 13, the output shaft of the motor is fixedly connected with one end of the horizontal screw rod 14, a horizontal sliding seat 15 is threadedly arranged on the horizontal screw rod 14, the bottom of the horizontal sliding seat 15 is fixedly connected with the connecting frame 16, and two cross beams are fixedly arranged in the long box 13, the two cross beams are both penetrated through the horizontal sliding seat 15 and are slidably connected with the horizontal sliding seat 15, and in addition, the long box 13 is fixedly connected with one side of the supporting table 6 through two connecting folding strips.

[0026] In the present manner, in order to stabilize the horizontally arranged pipe 10, two stabilizing rods are fixedly arranged on one side of the supporting table 6, and the ends of the two stabilizing rods are fixedly connected with the horizontally arranged pipe 10.

[0027] In addition, in use, the extrusion die 1 is first fixed on a specified station of an external extruder.

[0028] The working principle of the plastic bottle embryo extrusion molding device is as follows:

[0029] In the device, the free port of the liquid discharge pipe 12 is connected with an external waste liquid pool, and the port of an external plastic fluid extruder is connected with the plurality of mold cavities 2 on the extrusion die 1.

[0030] When the bottle embryo extrusion molding work is performed, the output shaft of the first cylinder 17 is first extended, the outer fixing frame 18 and the top sealing piece 3 are lowered, and the plurality of mold cores 4 enter the corresponding mold cavities 2, in the lowering process, when the demolding strip 23 is lowered to contact the top of the extrusion die 1, the top sealing piece 3 is still lowered through the sliding relationship between the guide column 22 and the top sealing piece 3, until the top of the demolding strip 23 contacts the bottom of the top sealing piece 3, at this time, the output shaft of the first cylinder 17 cannot be continuously extended, and then the external extruder is started, and the raw material enters the mold cavity 2 to perform the extrusion molding work.

[0031] After the extrusion is finished, the high-pressure pump 8 is started, the high-pressure pump 8 will extract the cooling liquid, and the cooling liquid is extracted into the transverse pipe 10, and then is introduced into the corresponding cooling cavity 5 through the two liquid guide pipes 11, at this time, the cooling liquid will flow in the cooling cavity 5, in the flow process, the extrusion die 1 can be cooled, and the cooling effect can be transmitted to the extruded bottle embryo through the inner wall of the cavity 2, so that the bottle embryo shrinks when it is cold, so that the bottle embryo can be wrapped more tightly on the mold core 4, then the output shaft of the first cylinder 17 is retracted, the mold core 4 is taken out with the bottle embryo, then the motor is started in the forward direction, the output shaft drives the horizontal lead screw 14 to rotate, so that the horizontal sliding seat 15 moves horizontally with the connecting frame 16, finally the mold core 4 is taken to the top of the receiving box 24, then the output shaft of the second cylinder 20 is extended, when the output shaft contacts the connecting strip 21, the connecting strip 21 is pushed down, and the demolding strip 23 is pushed down, so that the bottle embryo wrapped on the mold core 4 is taken off and falls into the receiving box 24, then the motor is started in the reverse direction, the mold core 4 is taken back to the original position to continue the extrusion molding work.

[0032] Compared with the related art, the plastic bottle embryo extrusion molding device has the following beneficial effects:

[0033] The plastic bottle embryo extrusion molding device provided by the utility model has the beneficial effects that two cooling cavities 5 are arranged on the extrusion die 1, the high-pressure pump 8 can extract the cooling liquid into the cooling cavity 5, the extruded bottle embryo can be indirectly cooled, shrinks when it is cold, and is tightly wrapped on the mold core 4, so that the bottle embryo material in the plurality of cavities 2 can be completely taken out without sticking, in addition, the demolding strip 23 is driven downward by the extension of the output shaft of the second cylinder 20, so that the bottle embryo wrapped on the mold core 4 can be quickly taken off and falls into the receiving box 24, so that the plurality of bottle embryos can be quickly taken off at one time, the continuity of taking the material is improved, and the work efficiency is improved.

[0034] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, any equivalent structure or equivalent process conversion according to the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A plastic bottle preform extrusion molding apparatus comprising an extrusion die and a support table, characterized by, The top of the extrusion die is provided with a plurality of cavities, the top of the extrusion die is provided with a top sealing piece, the bottom of the top sealing piece is fixedly provided with a plurality of mold cores, the plurality of mold cores are matched with the plurality of cavities respectively, two cooling cavities are arranged on the extrusion die, a cooling liquid tank and a high-pressure pump are arranged below the support table, one end of a liquid suction pipe is fixedly arranged on the liquid inlet port of the high-pressure pump, the other end of the liquid suction pipe is fixedly connected with the bottom of the cooling liquid tank, a horizontal pipe is fixedly arranged on the liquid outlet port of the high-pressure pump, two liquid guide pipes are fixedly arranged on the horizontal pipe, the top ends of the two liquid guide pipes are in contact with one side of the extrusion die, and the ports of the two liquid guide pipes are respectively communicated with the inlets of the two cooling cavities, a connecting frame is arranged above the top sealing piece, a first air cylinder is fixedly arranged on the bottom inner wall of the connecting frame, the output shaft of the first air cylinder extends below the connecting frame and is movably connected with the bottom of the connecting frame, an outer fixing frame is fixedly arranged on the output shaft of the first air cylinder, the bottom of the outer fixing frame is fixedly connected with the top sealing piece, three guide columns are slidably arranged on the top sealing piece, the bottom ends of the three guide columns are fixedly provided with a same demolding strip, the plurality of mold cores penetrate through the demolding strip and are slidably connected with the demolding strip, a same connecting strip is fixedly arranged on the top ends of the three guide columns, and the bottom of the connecting strip is in contact with the top sealing piece.

2. The apparatus according to claim 1, wherein Two liquid discharge pipes are fixedly arranged on the side of the extrusion die away from the liquid guide pipes, and the two liquid discharge pipes are respectively communicated with the outlets of the two cooling cavities.

3. The apparatus according to claim 1, wherein A long box is arranged above the connecting frame, a horizontal lead screw is rotatably arranged in the long box, and a horizontal sliding seat is threadedly arranged on the horizontal lead screw.

4. The apparatus according to claim 3, wherein A motor is fixedly arranged on the outer wall of one side of the long box, the output shaft of the motor is fixedly connected with one end of the horizontal lead screw, and two connecting folding strips are fixedly arranged on one side of the support table.

5. The apparatus for extrusion molding of a plastic preform according to claim 1, wherein A second air cylinder is fixedly arranged on the top of the inner fixing frame, and the output shaft of the second air cylinder penetrates through the top of the inner fixing frame and is movably connected with the top of the inner fixing frame.

6. The apparatus for extrusion molding of a plastic preform according to claim 1, wherein A receiving box is arranged on the top of the support table.

7. The apparatus according to claim 1, wherein Two stabilizing rods are fixedly arranged on one side of the support table, and the ends of the two stabilizing rods are fixedly connected with the horizontal pipe.

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