A temperature-controlled injection mold and injection molding method

Abstract

The present invention discloses a temperature-controlled injection mold and an injection molding method in the field of injection mold technology, comprising a lower mold base and an upper mold base, and an injection molding mechanism and a driving mechanism are arranged on one side of the upper mold base, and a sealing heat exchange cone seat is arranged on the outer sleeve of the injection port on the bottom side of the upper mold base, and mold base plates are fixedly connected to both sides of the bottom of the lower mold base through a support seat. In the present invention, the extrusion ball moves toward the outer edge of the transmission ring under the extrusion limiting action of the conical sealing heat exchange cone seat, driving the inner side of the heat exchange flexible sleeve to move outward, and the heat exchange flexible sleeve can control the heat exchange efficiency with the circulating medium through the contact gap of the heat exchange plate between the inner heat exchange plate and the outer heat exchange plate during the outward movement, so that the heat exchange effect of the medium during circulation can be controlled through the contact area of ​​the heat exchange plate between the inner heat exchange plate and the outer heat exchange plate, which is beneficial to regulating the energy storage temperature control and contact heat dissipation processing effects in the process before and after injection molding, and improving the yield rate of the final product.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a temperature-controlled injection mold and an injection molding method. Background Art

[0002] Injection molding is a method of producing industrial products. Products are usually made of rubber and plastics. In order to shape the product, an injection mold is generally used to support the thermoplastic plastic, and an injection molding machine is required for injection molding.

[0003] The prior art discloses some invention patents in the field of injection mold technology, among which the invention patent with application number CN113263704B discloses an intelligent constant temperature injection mold, including a main body; the side wall of the main body is provided with multiple groups of isolation plates; the side of the isolation plate away from the main body is fixedly connected with a thermal insulation and flame retardant material; the side of the isolation plate close to the main body is fixedly connected with a cylinder; the gas inside the gas storage tank will be introduced into the rodless cavity of the cylinder by the first air duct due to the effect of thermal expansion and contraction, and then the cylinder will push the isolation plate open on the main body to increase the space between the isolation plate and the main body, thereby accelerating the cooling rate of the main body, and when the temperature of the main body is low, the gas inside the gas storage tank will shrink, and the gas inside the rodless cavity of the cylinder will be extracted, so that the isolation plate and the thermal insulation and flame retardant material are close to the main body, so that the temperature drop rate of the main body is slowed down, increasing the insulation effect of the isolation plate and the thermal insulation and flame retardant material on the main body.

[0004] Although the prior art discloses adjusting the distance between the isolation plate and the main body, the thermal expansion and contraction effect of the gas tank is controlled relatively precisely. When the gas tank leaks and the air pressure is insufficient, it is inconvenient to adjust and control the distance. Moreover, when the melting temperature of the raw materials of the injection molding product is high, the heat exchange efficiency is likely to affect the final molding effect of the product. At the same time, it cannot adapt well to the temperature control effect of the injection molding temperature.

[0005] Based on this, the present invention designs a temperature-controlled injection mold and an injection molding method to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a temperature-controlled injection mold and an injection molding method to solve the problem that it is inconvenient to adjust and control the time interval of insufficient gas pressure in the gas storage tank when leakage occurs in the above-mentioned background technology, and when the melting temperature of the raw material of the injection molding product is high, the heat exchange efficiency is likely to affect the final molding effect of the product.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temperature-controlled injection mold, comprising a lower mold base and an upper mold base, and an injection mechanism and a driving mechanism are arranged on one side of the upper mold base, a sealed heat exchange cone seat is arranged on the outer sleeve of the injection port on the bottom side of the upper mold base, both sides of the bottom of the lower mold base are fixedly connected with a mold base plate through a support seat, a heat dissipation mechanism is fixedly installed on the top of the mold base plate, a heat exchange mechanism is connected to the top of the heat dissipation mechanism, the heat exchange mechanism is located in the inner cavity of the lower mold base, both sides of the heat exchange mechanism are connected with the sealed heat exchange cone seat through a circulation mechanism, the heat exchange mechanism and the heat dissipation mechanism are filled with heat exchange medium, a transmission mechanism is fixedly installed on the top of the heat exchange mechanism, the top of the transmission mechanism corresponds to the axial center position of the sealed heat exchange cone seat, and a mold core is fixedly installed in the inner cavity of the heat exchange mechanism;

[0008] The heat exchange mechanism comprises a heat exchange flexible sleeve, which is fixedly connected to the inner cavity of the lower mold base. Both sides of the heat exchange flexible sleeve are respectively connected to the circulation mechanism for controlling the flow of the heat exchange medium.

[0009] As a further solution of the present invention, the transmission mechanism includes a transmission ring, through holes are opened all around the transmission ring, and a transmission rod is slidably connected in the through hole, one end of the transmission rod is fixedly connected to an extrusion ball, and the other end of the transmission rod is rotatably connected to a rotating seat, one side of the rotating seat is hinged with a hinge block through a pin shaft, one side of the hinge block is fixedly connected to a support plate, and the support plate is fixedly connected to one side of the inner cavity of the heat exchange flexible sleeve, which is used to control the heat exchange intensity by squeezing the heat exchange flexible sleeve outward through the sealed heat exchange cone seat.

[0010] As a further scheme of the present invention, the circulation mechanism includes a circulating liquid bag, which is fixedly connected in a groove on one side of the support seat, one side of the circulating liquid bag is connected to one side of the heat exchange flexible sleeve through a one-way valve, and the flow directions of the one-way valves of the circulating liquid bags on both sides are opposite, and an extrusion sleeve is provided on the outer side of the pipeline of the circulating liquid bag close to the one-way valve side, and a fixing plate is fixedly connected to one side of the extrusion sleeve, and the top of the fixing plate is fixedly connected to the inner side of the bottom of the heat exchange flexible sleeve, and the other side of the extrusion sleeve is fitted with a side of the circulating liquid bag close to the one-way valve, and the other side of the circulating liquid bag is connected to a transmission liquid pipe, and the transmission liquid pipe extends from one side of the lower mold base to the bottom of the upper mold base and is connected to one side of the sealed heat exchange cone seat.

[0011] As a further solution of the present invention, the transmission fluid pipe is a flexible plastic pipe, and the transmission fluid pipe is a heat-insulating pipe.

[0012] As a further solution of the present invention, inner heat exchange plates are fixedly connected around the inner cavity of the heat exchange flexible sleeve, an outer heat exchange plate is slidably connected to one side of the inner heat exchange plate, a plurality of heat dissipation fins are fixedly connected to one side of the opposite surface of the outer heat exchange plate and the inner heat exchange plate, and the heat exchange efficiency is controlled by the contact area between the plurality of heat dissipation fins.

[0013] As a further solution of the present invention, the heat dissipation mechanism includes a heat exchange seat, the two ends of the top of the heat exchange seat are connected to the bottom side of the heat exchange flexible sleeve through a circulation pipe, the inner cavity of the heat exchange seat is provided with multiple groups of heat exchange plates, a plurality of ventilation slots are opened on one side of the heat exchange seat, and a wind hood is provided on one side of the ventilation slot for air cooling of the reflux medium.

[0014] As a further solution of the present invention, one side of the wind hood is connected to a purge pipe, the other end of the purge pipe is connected to a compressed air bag, the compressed air bag is fitted with one side of the support plate, one side of the compressed air bag is fixedly connected to a connecting plate, the connecting plate is fixedly connected to the top of the lower mold base, and the purge pipe is passed through the inner cavity of the connecting plate.

[0015] As a further solution of the present invention, the cross-sectional shape of the wind hood is conical, and the inner cavity of the wind hood is fixedly connected with a sweeping blade.

[0016] As a further solution of the present invention, positioning holes are provided at the four corners of the top of the lower die base, and the positioning holes correspond to the guide positioning rods on the bottom side of the upper die base.

[0017] As a further solution of the present invention, a method for injection molding of a temperature-controlled injection mold specifically comprises the following steps:

[0018] S1. Feed the raw material particles into an extruder on one side. The extruder melts the raw material particles and feeds them into an injection molding mechanism through feeding. The injection molding mechanism is driven by a feeding driving mechanism on one side of the upper mold seat to contact the lower mold seat on the bottom side. The injection port on the bottom side of the upper mold seat contacts the mold core of the lower mold seat. When the upper mold seat moves downward, the sealing heat exchange cone seat on the bottom side of the upper mold seat can contact the extrusion ball in the bottom transmission ring under the action of pressure. The extrusion ball moves toward the outer edge of the transmission ring under the extrusion limit of the conical sealing heat exchange cone seat. The movement of the extrusion ball drives the transmission rod to pull the rotating seat and drives the hinge block to rotate. The hinge block pushes the support plate to move and drives the inner side of the heat exchange flexible sleeve to move outward, thereby reducing the heat exchange efficiency and controlling the heat exchange temperature. During the outward movement, the heat exchange flexible sleeve can control the heat exchange efficiency with the circulating medium through the contact gap between the heat exchange plate and the outer heat exchange plate, so that the heat of the injection liquid just injected can be effectively maintained, and the injection liquid can fully flow in the mold core;

[0019] S2. When the inner side of the heat exchange flexible sleeve moves, it can simultaneously push the fixed plate connected to the bottom side to move. The movement of the fixed plate can pull the extrusion sleeve on one side to drive the circulation liquid bag to expand. When the circulation liquid bag expands, it can control the transmission liquid bag through the one-way valve to absorb the liquid after heat exchange in the sealed heat exchange cone seat. The liquid after heat exchange and temperature rise can enter the heat exchange seat. At the same time, the liquid after heat dissipation in the heat exchange seat can be sent into the heat exchange flexible sleeve under pressure. The liquid after heat exchange in the heat exchange flexible sleeve enters the cooling liquid cavity on the other side of the heat exchange seat. At the same time, the cooled water in the cooling liquid cavity of the heat exchange seat can enter the sealed heat exchange cone seat through the transmission liquid pipe on the other side, so as to realize the circulation treatment of the heat exchange medium in the sealed heat exchange cone seat and the heat exchange flexible sleeve. When the fixed plate moves, it can squeeze the compression airbag on one side. The gas in the compression airbag can be sent into the wind cover through the purge pipe on one side. The gas blown out of the wind cover can drive the gas circulation to send the heat out through the opening on one side of the heat exchange seat, so as to realize the circulation discharge of heat.

[0020] S3. After the injection molding is completed, the upper mold base moves upward and resets. At this time, the heat exchange flexible sleeve can shrink elastically. At this time, the inner heat exchange plate and the outer heat exchange plate are fully fitted for heat exchange. After the injection molded components in the mold core are heat exchanged, the mold core is opened for discharge, and the injection molding is completed.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, by means of the designed heat exchange flexible sleeve, when the upper mold seat is driven by the driving device to move downward, the sealed heat exchange cone seat on the bottom side of the upper mold seat can contact the extrusion ball in the bottom transmission ring under the action of pressure, and the extrusion ball moves toward the outer edge of the transmission ring under the extrusion limit action of the conical sealed heat exchange cone seat, driving the inner side of the heat exchange flexible sleeve to move outward. In the process of outward movement, the heat exchange flexible sleeve can control the heat exchange efficiency with the circulating medium through the contact gap of the heat exchange fins between the inner heat exchange plate and the outer heat exchange plate, so that the heat exchange effect when the medium is circulating can be controlled through the contact area of ​​the heat exchange fins between the inner heat exchange plate and the outer heat exchange plate, which is beneficial to regulating the energy storage temperature control and contact heat dissipation processing effects in the process before and after injection molding, and improving the yield rate of the final product.

[0023] 2. In the present invention, when the inner side of the heat exchange flexible sleeve moves, it pushes the fixed plate connected to the bottom side to move. The movement of the fixed plate can pull the extrusion sleeve on one side to drive the circulating liquid bag to expand. When the circulating liquid bag is expanded, the one-way valve can be used to control the transmission liquid bag to absorb the liquid in the sealed heat exchange cone seat. The liquid heated by heat exchange is sent to the heat exchange flexible sleeve. The liquid after heat exchange in the heat exchange flexible sleeve enters the cooling liquid cavity on the other side of the heat exchange seat. At the same time, the cooled water in the cooling liquid cavity of the heat exchange seat can enter the sealed heat exchange cone seat through the transmission liquid pipe on the other side. The conical extrusion sleeve can ensure the extrusion treatment effect on the circulating liquid bag, realize the circulation treatment effect of the internal medium, realize the circulation treatment of the heat exchange medium through a single power source, realize the rapid conduction treatment of heat through the circulation of the heat exchange medium, and avoid the influence of heat accumulation in the heat exchange seat.

[0024] 3. In the present invention, through the designed compression airbag, the fixed plate can squeeze the compression airbag on one side of the displacement rear side when moving, and the gas in the compression airbag can be sent into the wind hood through a purge pipe on one side. The gas blown out of the wind hood can drive the gas circulation to send the heat out through the opening on one side of the heat exchange seat, thereby realizing the circulation and discharge of heat, avoiding the additional setting of heat dissipation source, improving the heat dissipation effect of the mold, and extending the durable processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the partial split structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the split structure of the mold base plate of the present invention;

[0028] Figure 4 It is a schematic diagram of the heat dissipation mechanism structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the disassembled structure of the transmission mechanism of the present invention;

[0030] Figure 6 It is a schematic diagram of the assembly structure of the heat exchange mechanism of the present invention;

[0031] Figure 7 It is a schematic diagram of the disassembled structure of the heat exchange mechanism of the present invention;

[0032] Figure 8 It is a structural schematic diagram from another angle of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Die base plate; 2. Upper die base; 3. Lower die base; 4. Support seat; 5. Transmission mechanism; 501. Transmission ring; 502. Extrusion ball; 503. Transmission rod; 504. Hinge block; 505. Support plate; 506. Rotating seat; 6. Heat exchange mechanism; 601. Heat exchange flexible sleeve; 602. Inner heat exchange plate; 603. Outer heat exchange plate; 7. Circulation mechanism; 701. Circulation liquid bag; 702. Extrusion sleeve; 703. Fixed plate; 704. Transmission liquid pipe; 705. One-way valve; 8. Heat dissipation mechanism; 801. Heat exchange seat; 802. Wind hood; 803. Purge pipe; 804. Connecting plate; 805. Compressed air bag; 9. Mold core; 10. Sealed heat exchange cone seat. DETAILED DESCRIPTION

[0035] See also Figure 1-8 The present invention provides a technical solution: a temperature-controlled injection mold, comprising a lower mold base 3 and an upper mold base 2, and an injection mechanism and a driving mechanism are arranged on one side of the upper mold base 2, a sealed heat exchange cone seat 10 is arranged on the outer sleeve of the injection port on the bottom side of the upper mold base 2, both sides of the bottom of the lower mold base 3 are fixedly connected with a mold base plate 1 through a support seat 4, a heat dissipation mechanism 8 is fixedly installed on the top of the mold base plate 1, and a heat exchange mechanism 6 is connected to the top of the heat dissipation mechanism 8, and the heat exchange mechanism 6 is located in the inner cavity of the lower mold base 3, and both sides of the heat exchange mechanism 6 are connected with the sealed heat exchange cone seat 10 through a circulation mechanism 7, and the heat exchange mechanism 6 and the heat dissipation mechanism 8 are filled with heat exchange medium, and a transmission mechanism 5 is fixedly installed on the top of the heat exchange mechanism 6, and the top of the transmission mechanism 5 corresponds to the axial position of the sealed heat exchange cone seat 10, and a mold core 9 is fixedly installed in the inner cavity of the heat exchange mechanism 6;

[0036] The heat exchange mechanism 6 includes a heat exchange flexible sleeve 601, which is fixedly connected to the inner cavity of the lower mold base 3. Both sides of the heat exchange flexible sleeve 601 are respectively connected to the circulation mechanism 7 for controlling the flow of heat exchange medium.

[0037] The circulation mechanism 7 includes a circulation liquid bag 701, which is fixedly connected to a groove on one side of the support seat 4. One side of the circulation liquid bag 701 is connected to one side of the heat exchange flexible sleeve 601 through a one-way valve 705, and the one-way valves 705 on both sides of the circulation liquid bag 701 have opposite flow directions. An extrusion sleeve 702 is provided on the outer side of the pipeline of the circulation liquid bag 701 close to the one-way valve 705. A fixed plate 703 is fixedly connected to one side of the extrusion sleeve 702. The top of the fixed plate 703 is fixedly connected to the inner side of the bottom of the heat exchange flexible sleeve 601. The other side of the extrusion sleeve 702 fits with the side of the circulation liquid bag 701 close to the one-way valve 705. The other side of the circulation liquid bag 701 is connected to a transmission liquid pipe 704, which extends from one side of the lower mold base 3 to the bottom of the upper mold base 2 and is connected to one side of the sealed heat exchange cone seat 10. The transmission liquid pipe 704 is a flexible plastic pipe, and the transmission liquid pipe 704 is an insulation pipe.

[0038] The specific implementation method is as follows: when the inner side of the heat exchange flexible sleeve 601 moves, it can simultaneously push the fixed plate 703 connected to the bottom side to move, and the movement of the fixed plate 703 can pull the extrusion sleeve 702 on one side to drive the circulating liquid capsule 701 to expand, and when the circulating liquid capsule 701 is expanded, the one-way valve 705 can be used to control the transmission liquid capsule to absorb the liquid after heat exchange in the sealed heat exchange cone seat 10, and the liquid heated by heat exchange can enter the heat exchange seat 801, and at the same time, the liquid after heat dissipation in the heat exchange seat 801 can be sent into the heat exchange flexible sleeve 601 under pressure, and the liquid after heat exchange in the heat exchange flexible sleeve 601 enters the cooling liquid cavity on the other side of the heat exchange seat 801, and at the same time, the cooled water in the cooling liquid cavity of the heat exchange seat 801 can enter the sealed heat exchange cone seat 10 through the transmission liquid pipe 704 on the other side, and the flexible transmission liquid pipe 704 can prevent the moving upper mold seat 2 from affecting the pressing process, and at the same time, the conical extrusion sleeve 702 can ensure the extrusion processing effect of the circulating liquid capsule 701, and realize the circulation processing effect of the internal medium;

[0039] The transmission mechanism 5 includes a transmission ring 501, and through holes are provided around the transmission ring 501, and a transmission rod 503 is slidably connected in the through hole, one end of the transmission rod 503 is fixedly connected to a squeezing ball 502, and the other end of the transmission rod 503 is rotatably connected to a rotating seat 506, one side of the rotating seat 506 is hinged with a hinge block 504 through a pin shaft, and one side of the hinge block 504 is fixedly connected to a support plate 505, and the support plate 505 is fixedly connected to one side of the inner cavity of the heat exchange flexible sleeve 601, which is used to control the heat exchange flexible sleeve 601 to expand outward to control the heat exchange intensity through squeezing the sealed heat exchange cone seat 10, and the inner heat exchange plate 602 is fixedly connected to the inner cavity of the heat exchange flexible sleeve 601 around, and the outer heat exchange plate 603 is slidably connected to one side of the inner heat exchange plate 602, and a plurality of heat sink fins are fixedly connected to the opposite side of the outer heat exchange plate 603 and the inner heat exchange plate 602, and the heat exchange efficiency is controlled by the contact area between the plurality of heat sink fins;

[0040] The specific implementation method is as follows: when the upper mold base 2 is driven by the driving device to move downward, the sealing heat exchange cone seat 10 on the bottom side of the upper mold base 2 can contact the squeezing ball 502 in the bottom side transmission ring 501 under the action of pressure, and the squeezing ball 502 moves toward the outer edge of the transmission ring 501 under the squeezing and limiting action of the conical sealing heat exchange cone seat 10. The movement of the squeezing ball 502 drives the transmission rod 503 to pull the rotating seat 506 and drives the hinge block 504 to rotate. The hinge block 504 pushes the support plate 505 to move and drives the inner side of the heat exchange flexible sleeve 601 to move outward, thereby reducing the heat exchange efficiency control. The heat exchange temperature is controlled. When the heat exchange flexible sleeve 601 moves outward, it can control the heat exchange efficiency with the circulating medium through the contact gap between the heat exchange plates 602 and the outer heat exchange plates 603. Multiple heat dissipation fins can improve the heat exchange contact effect and ensure the heat conduction treatment. The inner heat exchange plate 602, the outer heat exchange plate 603 and the heat dissipation fins are all copper heat exchange components to improve the heat exchange effect. Through the designed squeezing ball 502, the squeezing ball 502 can reduce the friction of the pressed sealing heat exchange cone seat 10 and improve the transmission effect between the squeezing ball 502 and the transmission rod 503.

[0041] The heat dissipation mechanism 8 includes a heat exchange seat 801, the top two ends of the heat exchange seat 801 are connected to the bottom side of the heat exchange flexible sleeve 601 through a circulation pipe, the inner cavity of the heat exchange seat 801 is provided with multiple groups of heat exchange plates, one side of the heat exchange seat 801 is provided with a plurality of ventilation slots, and one side of the ventilation slot is provided with a wind cover 802 for air heat dissipation of the reflux medium, one side of the wind cover 802 is connected with a purge pipe 803, and the other end of the purge pipe 803 is connected with a compressed air bag 805, The compressed air bag 805 is fitted with one side of the support plate 505, and one side of the compressed air bag 805 is fixedly connected to a connecting plate 804, and the connecting plate 804 is fixedly connected to the top of the lower mold base 3. The purge pipe 803 is passed through the inner cavity of the connecting plate 804, and the cross-sectional shape of the wind hood 802 is conical, and the inner cavity of the wind hood 802 is fixedly connected to a purge blade, and positioning holes are opened at the four corners of the top of the lower mold base 3, and the positioning holes correspond to the guide positioning rods on the bottom side of the upper mold base 2.

[0042] The specific implementation method is as follows: when the fixed plate 703 moves, it can squeeze the compressed air bag 805 on the rear side of the displacement, and the gas in the compressed air bag 805 can be sent into the wind hood 802 through the side purge pipe 803. The gas blown out of the wind hood 802 can drive the gas circulation to send the heat out through the opening on one side of the heat exchange seat 801, thereby realizing the circulation and discharge of heat. The purge blades can guide the blowing direction to improve the blowing treatment effect. The lower mold seat 3 can ensure the guiding and blanking effect of the upper mold seat 2 through the positioning hole by cooperating with the positioning rod.

[0043] Working principle: A method for injection molding of a temperature-controlled injection mold, specifically comprising the following steps:

[0044] S1. Feed the raw material particles into an extruder on one side. The extruder melts the raw material particles and feeds them into the injection molding mechanism through feeding. The injection molding mechanism is driven by the feeding drive mechanism on one side of the upper mold base 2 to contact the lower mold base 3 on the bottom side. The injection port on the bottom side of the upper mold base 2 contacts the mold core 9 of the lower mold base 3. When the upper mold base 2 moves downward, the sealing heat exchange cone seat 10 on the bottom side of the upper mold base 2 can contact the extrusion ball 502 in the bottom side transmission ring 501 under the action of pressure. The extrusion ball 502 moves toward the transmission ring 501 under the extrusion limit action of the conical sealing heat exchange cone seat 10. 1 moves along the outer edge, the extrusion ball 502 moves to drive the transmission rod 503 to pull the rotating seat 506 and drive the hinge block 504 to rotate, the hinge block 504 pushes the support plate 505 to move and drives the inner side of the heat exchange flexible sleeve 601 to move outward, reducing the heat exchange efficiency and controlling the heat exchange temperature. During the outward movement, the heat exchange flexible sleeve 601 can control the heat exchange efficiency with the circulating medium through the contact gap between the heat exchange plate 602 and the outer heat exchange plate 603, so that the heat of the injection liquid just injected can be effectively maintained, and the injection liquid can fully flow in the mold core 9;

[0045] S2. When the inner side of the heat exchange flexible sleeve 601 moves, it can push the fixed plate 703 connected to the bottom side to move. The movement of the fixed plate 703 can pull the extrusion sleeve 702 on one side to drive the circulating liquid capsule 701 to expand. When the circulating liquid capsule 701 is expanded, the transmission liquid capsule can be controlled by the one-way valve 705 to absorb the liquid after heat exchange in the sealed heat exchange cone seat 10. The liquid after heat exchange and temperature rise can enter the heat exchange seat 801. At the same time, the liquid after heat dissipation in the heat exchange seat 801 can be sent into the heat exchange flexible sleeve 601 under pressure. The liquid after heat exchange in the heat exchange flexible sleeve 601 enters the heat exchange seat 801 through the other side. In the cooling liquid cavity on one side, the cooled water in the cooling liquid cavity of the heat exchange seat 801 can enter the sealed heat exchange cone seat 10 through the transmission liquid pipe 704 on the other side, so as to realize the circulation treatment of the heat exchange medium in the sealed heat exchange cone seat 10 and the heat exchange flexible sleeve 601, and the fixed plate 703 can squeeze the compressed air bag 805 on one side when moving, and the gas in the compressed air bag 805 can be sent into the wind cover 802 through the purge pipe 803 on one side, and the gas blown out of the wind cover 802 can drive the gas circulation to send the heat out through the opening on one side of the heat exchange seat 801, so as to realize the circulation discharge of heat;

[0046] S3. After the injection molding is completed, the upper mold base 2 moves upward to reset. At this time, the heat exchange flexible sleeve 601 can shrink elastically. At this time, the inner heat exchange plate 602 and the outer heat exchange plate 603 are fully fitted to exchange heat. After the injection molded components in the mold core 9 are heat exchanged, the mold core 9 is opened for discharge, and the injection molding is completed.

Claims

1. A temperature-controlled injection mold, comprising a lower mold base (3) and an upper mold base (2), wherein an injection mechanism and a driving mechanism are provided on one side of the upper mold base (2), characterized in that: The outer sleeve of the injection molding port at the bottom side of the upper mold base (2) is provided with a sealed heat exchange cone seat (10); both sides of the bottom of the lower mold base (3) are fixedly connected to a mold base plate (1) through a support seat (4); a heat dissipation mechanism (8) is fixedly installed on the top of the mold base plate (1); the top of the heat dissipation mechanism (8) is connected to a heat exchange mechanism (6); the heat exchange mechanism (6) is located in the inner cavity of the lower mold base (3); both sides of the heat exchange mechanism (6) are connected to the sealed heat exchange cone seat (10) through a circulation mechanism (7); the heat exchange mechanism (6) and the heat dissipation mechanism (8) are filled with heat exchange medium; a transmission mechanism (5) is fixedly installed on the top of the heat exchange mechanism (6); the top of the transmission mechanism (5) corresponds to the axial position of the sealed heat exchange cone seat (10); and a mold core (9) is fixedly installed in the inner cavity of the heat exchange mechanism (6); The heat exchange mechanism (6) comprises a heat exchange flexible sleeve (601), the heat exchange flexible sleeve (601) is fixedly connected to the inner cavity of the lower mold base (3), and both sides of the heat exchange flexible sleeve (601) are respectively connected to the circulation mechanism (7) for controlling the flow of the heat exchange medium; The transmission mechanism (5) comprises a transmission ring (501), the transmission ring (501) is provided with through holes on all sides, and a transmission rod (503) is slidably connected in the through hole, one end of the transmission rod (503) is fixedly connected to a squeezing ball (502), and the other end of the transmission rod (503) is rotatably connected to a rotating seat (506), one side of the rotating seat (506) is hinged to a hinge block (504) through a pin shaft, one side of the hinge block (504) is fixedly connected to a support plate (505), and the support plate (505) is fixedly connected to one side of the inner cavity of the heat exchange flexible sleeve (601) for controlling the heat exchange intensity by squeezing the heat exchange flexible sleeve (601) outwardly through the sealed heat exchange cone seat (10); The circulation mechanism (7) comprises a circulation liquid capsule (701), wherein the circulation liquid capsule (701) is fixedly connected to a groove on one side of the support seat (4), one side of the circulation liquid capsule (701) is connected to one side of the heat exchange flexible sleeve (601) via a one-way valve (705), and the one-way valves (705) on both sides of the circulation liquid capsule (701) have opposite flow directions, and an extrusion sleeve (702) is provided on the outer side of the pipeline on the side of the circulation liquid capsule (701) close to the one-way valve (705), and the extrusion sleeve (702) One side is fixedly connected with a fixing plate (703), the top of the fixing plate (703) is fixedly connected with the inner side of the bottom of the heat exchange flexible sleeve (601), the other side of the extrusion sleeve (702) is in contact with the side of the circulating liquid bag (701) close to the one-way valve (705), the other side of the circulating liquid bag (701) is connected with a transmission liquid pipe (704), the transmission liquid pipe (704) extends from one side of the lower mold base (3) to the bottom of the upper mold base (2) and is connected with one side of the sealing heat exchange cone seat (10); The inner cavity of the heat exchange flexible sleeve (601) is fixedly connected with an inner heat exchange plate (602) all around, one side of the inner heat exchange plate (602) is slidably connected with an outer heat exchange plate (603), and one side of the outer heat exchange plate (603) and the inner heat exchange plate (602) facing each other is fixedly connected with a plurality of heat dissipation fins, and the heat exchange efficiency is controlled by the contact area between the plurality of heat dissipation fins; The heat dissipation mechanism (8) comprises a heat exchange seat (801), the top two ends of the heat exchange seat (801) are connected to the bottom side of the heat exchange flexible sleeve (601) through a circulation pipe, the inner cavity of the heat exchange seat (801) is provided with a plurality of heat exchange fins, a plurality of ventilation slots are opened on one side of the heat exchange seat (801), and a wind cover (802) is provided on one side of the ventilation slot for air heat dissipation of the reflux medium; One side of the wind hood (802) is connected to a purge pipe (803), and the other end of the purge pipe (803) is connected to a compressed air bag (805). The compressed air bag (805) is in contact with one side of the support plate (505). One side of the compressed air bag (805) is fixedly connected to a connecting plate (804), and the connecting plate (804) is fixedly connected to the top of the lower mold base (3). The purge pipe (803) is inserted into the inner cavity of the connecting plate (804).

2. A temperature-controlled injection mold according to claim 1, characterized in that: The transmission fluid pipe (704) is a flexible plastic pipe, and the transmission fluid pipe (704) is a heat-insulating pipe.

3. A temperature-controlled injection mold according to claim 2, characterized in that: The cross-sectional shape of the wind hood (802) is conical, and a sweeping blade is fixedly connected to the inner cavity of the wind hood (802).

4. A temperature-controlled injection mold according to claim 1, characterized in that: Positioning holes are provided at the four corners of the top of the lower die seat (3), and the positioning holes correspond to the guide positioning rods at the bottom side of the upper die seat (2).

5. A method for injection molding of a temperature-controlled injection mold, using a temperature-controlled injection mold as claimed in any one of claims 1 to 4, characterized in that: The specific steps include: S1. Feeding raw material particles into an extruder on one side, the extruder melts the raw material particles and then feeds them into an injection molding mechanism through a feeding mechanism. The injection molding mechanism is driven by a feeding driving mechanism on one side of an upper mold base (2) to contact with a lower mold base (3) on the bottom side. The injection molding port on the bottom side of the upper mold base (2) contacts with a mold core (9) of the lower mold base (3). When the upper mold base (2) moves downward, the sealing heat exchange cone seat (10) on the bottom side of the upper mold base (2) can contact with an extrusion ball (502) in a transmission ring (501) on the bottom side under the action of pressure. The extrusion ball (502) is pushed toward the transmission ring (501) under the extrusion limiting action of the conical sealing heat exchange cone seat (10). 01) The outer edge moves, the squeezing ball (502) moves to drive the transmission rod (503) to pull the rotating seat (506) and drive the hinge block (504) to rotate, the hinge block (504) pushes the support plate (505) to move and drives the inner side of the heat exchange flexible sleeve (601) to move outward, thereby reducing the heat exchange efficiency and controlling the heat exchange temperature. During the outward movement, the heat exchange flexible sleeve (601) can control the heat exchange efficiency with the circulating medium through the contact gap between the heat exchange plate (602) and the outer heat exchange plate (603), so that the heat of the injection liquid just injected can be effectively maintained, and the injection liquid can fully flow in the mold core (9); S2. When the inner side of the heat exchange flexible sleeve (601) moves, it can simultaneously push the fixed plate (703) connected to the bottom side to move. The movement of the fixed plate (703) can pull the extrusion sleeve (702) on one side to drive the circulating liquid bag (701) to expand. When the circulating liquid bag (701) is expanded, it can control the transmission liquid bag through the one-way valve (705) to absorb the liquid after heat exchange in the sealed heat exchange cone seat (10). The liquid after heat exchange and temperature rise can enter the heat exchange seat (801). At the same time, the liquid after heat dissipation in the heat exchange seat (801) can be sent into the heat exchange flexible sleeve (601) under pressure. The liquid after heat exchange in the heat exchange flexible sleeve (601) enters the heat exchange seat (801) through In the cooling liquid cavity on the other side, the cooled water in the cooling liquid cavity of the heat exchange seat (801) can enter the sealed heat exchange cone seat (10) through the transmission liquid pipe (704) on the other side, so as to realize the circulation treatment of the heat exchange medium in the sealed heat exchange cone seat (10) and the heat exchange flexible sleeve (601), and the fixed plate (703) can squeeze the compressed air bag (805) on one side when moving, and the gas in the compressed air bag (805) can be sent into the wind cover (802) through the purge pipe (803) on one side, and the gas blown out of the wind cover (802) can drive the gas circulation to send the heat out through the opening on one side of the heat exchange seat (801), so as to realize the circulation discharge of heat; S3. After the injection molding is completed, the upper mold base (2) moves upward to reset. At this time, the heat exchange flexible sleeve (601) can be elastically contracted. At this time, the inner heat exchange plate (602) and the outer heat exchange plate (603) are fully fitted to exchange heat. After the injection molded components in the mold core (9) are heat exchanged, the mold core (9) is opened to discharge the material, and the injection molding is completed.

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