CN112549447A

CN112549447A - Stable-temperature-rise hot runner forming process and mold thereof

Info

Publication number: CN112549447A
Application number: CN202011410676.XA
Authority: CN
Inventors: 夏明�
Original assignee: Suzhou Putai Auto Parts Co ltd
Current assignee: Suzhou Putai Auto Parts Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-03-26

Abstract

The invention discloses a hot runner forming process with stable temperature rise, which comprises the steps of preparation, heating and temperature regulation; the device also comprises an overheating adjusting mechanism, a fixed template, a movable template, a first locking module, a second locking module, a mode locking permanent magnet and a mode locking electromagnet; on the one hand, the temperature regulator is in a matrix form, the temperature regulation is fine and precise, the heating uniformity is improved, the product quality is good, the heat driving is adopted, the mechanical structure is simple, the preparation cost is low, the damage is not easy to occur, on the other hand, the heat dissipation capacity is increased, the ducted heat dissipation structure is utilized, the heat dissipation capacity is improved, the damage to the components due to the overheating of a hot runner system is avoided, and the service life of the device is prolonged.

Description

Stable-temperature-rise hot runner forming process and mold thereof

Technical Field

The invention belongs to the field of molding processes and equipment, and particularly relates to a hot runner molding process with stable temperature rise and a mold thereof.

Background

The hot runner system ensures that the plastic of a runner and a sprue keeps a molten state by a heating method so as to achieve the purposes of saving cost and shortening a molding period. The hot runner system is used as a device with higher preparation cost and higher precision, and is widely applied to large-scale precision moulds so as to improve the working quality of the moulds.

Of course, present hot runner system still has many weak points, for example, present hot runner molding process mostly has the unstable problem of heating, influences the shaping quality easily, needs plenty of time and adjustment, has improved manufacturing cost and cost of labor, and simultaneously, present hot runner molding process mostly only focuses on heating capacity, does not pay attention to the stability of hot runner system itself enough, and it is overheated often to appear the mould, influences the intensity of hot runner system subassembly, reduces the life of system. Therefore, the present application provides innovations and improvements in the hot runner molding process with respect to the above problems.

The existing forming process mainly has the following problems:

1. most of the existing hot runner forming processes have the problem of unstable heating, the forming quality is easily influenced, a large amount of time and adjustment are needed, and the production cost and the labor cost are improved.

2. Most of the existing hot runner molding processes only pay attention to heating capacity, the stability of a hot runner system is not paid enough attention to, the mold is often overheated, the strength of a hot runner system component is affected, and the service life of the system is reduced.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide a hot runner forming process with stable temperature rise and a mould thereof, on one hand, the miniaturization and the precision of temperature regulation are realized through a matrix temperature regulator, the heating uniformity is improved, the product quality is good, the thermal driving is adopted, the mechanical structure is simple, the preparation cost is low, the hot runner forming process is not easy to damage, on the other hand, the heat dissipation capability is improved, the ducted heat dissipation structure is utilized, the heat dissipation capability is improved, the damage to components caused by the overheating of a hot runner system is avoided, and the service life of the device is limited to a long time.

The technical scheme is as follows: in order to achieve the purpose, the invention provides a hot runner forming process with stable temperature rise, which comprises the steps of preparation, heating and temperature regulation and is characterized in that: the method specifically comprises the following steps:

the method comprises the following steps: the preparation method comprises the steps of preparing, wherein the preparation method comprises the steps of arranging a runner plate, heating rings, a hot nozzle, a temperature control box and a temperature regulator, wherein a pouring runner is arranged in the runner plate, the heating rings are arranged on two sides of the pouring runner, the heating rings are arranged on the top of the runner plate, and the heating rings are arranged on the bottom of the runner plate; the heating ring is connected with a temperature control box; one end of the pouring runner is provided with a hot nozzle, the hot nozzle is arranged in the runner plate, and the hot nozzle penetrates out of the runner plate; a temperature regulator is arranged on the outer side of the pouring flow channel and wraps the pouring flow channel;

step two: heating, wherein the temperature control box is opened, the heating ring heats, and the hot nozzle heats;

step three: the temperature regulator regulates the size of the channel according to thermal expansion and pressure difference, and the temperature of the casting channel is averaged.

The hot runner forming process is arranged, the thinning and the precision of temperature regulation are realized through the matrix temperature regulator, the heating uniformity is improved, the product quality is good, the thermal driving is adopted, the mechanical structure is simple, the preparation cost is low, and the damage is not easy.

The temperature regulator comprises a temperature regulator bracket, a plurality of heat conduction channels, a movable heat insulation plate, an adjusting block and a heat insulation plate, wherein the temperature regulator bracket is arranged outside the pouring flow channel, the temperature regulator brackets are arranged in a queue, the heat conduction channels are arranged in the temperature regulator bracket and are made of heat conduction materials; the movable heat insulation plate is arranged on the thermostat bracket, is in sliding contact with the thermostat bracket, penetrates into the heat conduction channel and is in sliding contact with the heat conduction channel; one end of the movable heat insulation plate close to the thermostat bracket is provided with an adjusting block, and the adjusting block is made of thermal expansion materials; one side of the adjusting block is provided with a heat insulation plate which is arranged in the thermostat support.

The arrangement of the temperature regulator in the invention utilizes the matrix temperature regulator to realize the miniaturization and the precision of temperature regulation and improve the heating uniformity.

The temperature regulator is characterized in that permanent magnetic particles are arranged in the regulating block, and the temperature regulator bracket is also provided with the permanent magnetic particles.

The arrangement of the permanent magnetic particles can ensure the position of the movable heat insulation plate, avoid the movable heat insulation plate from remaining in the heat conduction channel and ensure the smoothness and the accuracy of heat conduction.

The adjusting block expands when heated, the movable heat insulation plate is pushed to move, the heat conduction of the heat conduction channel is blocked, and more heat conduction is blocked in a region with high heat quantity compared with a region with low heat quantity, so that the heat quantity passing through each region is consistent.

The bottom of the hot nozzle is provided with a heat conduction ring, and the heat conduction ring is embedded at the bottom of the runner plate.

The arrangement of the heat conduction ring improves the cooling speed and the heating speed of the hot nozzle, avoids material leakage in a molten state during die opening, and improves the production quality of equipment.

The runner plate is provided with an overheating adjusting mechanism, the overheating adjusting mechanism comprises a temperature sensor, a radiating fin, a radiating fan, a flow guide channel and a sliding plate, the radiating fin is arranged on one side of the runner plate, one end of the radiating fin is in contact with the pouring runner, the other end of the radiating fin is provided with the flow guide channel, the flow guide channel is arranged in the flow guide plate, the flow guide channel penetrates out of the flow guide plate, the radiating fan is arranged in the flow guide channel, and the radiating fan is arranged on two sides of the radiating fin; sliding plates are arranged at two ends of the flow guide channel, the sliding plates are arranged on one side of the flow guide plate, the sliding plates are in sliding contact with the flow guide plate, and the sliding plates are electrically driven; the cooling fan is connected and is provided with temperature sensor, temperature sensor inlays and sets up on the runner plate, temperature sensor connects the slide.

The arrangement of the heat adjusting mechanism increases the heat dissipation capability, and the ducted heat dissipation structure is utilized to improve the heat dissipation capability, so that the damage to components due to overheating of the hot runner system is avoided, and the service life of the device is prolonged.

The temperature sensor detects heat, when the heat exceeds a set value, the temperature sensor responds, the sliding plate slides, the flow guide channel is communicated with the outside, and the cooling fan is started.

The bottom of the runner plate is provided with a fixed template, a movable template, a first locking module, a second locking module, a mode locking permanent magnet and a mode locking electromagnet, the bottom of the runner plate is provided with the fixed template, the bottom of the fixed template is provided with the movable template, and the movable template is matched with the fixed template; a first lock module is arranged on one side of the fixed board, a second lock module is arranged on one side of the movable template, the second lock module is matched with the first lock module, and the second lock module penetrates into the first lock module; the second lock module is provided with a mode locking permanent magnet, the first lock module is provided with a mode locking electromagnet, and the mode locking electromagnet is matched with the mode locking permanent magnet.

The arrangement of the die in the invention utilizes the adsorption and repulsion of the magnetic material, thereby increasing the capability of rapidly opening and closing the die and improving the production efficiency of the equipment.

The mode locking electromagnet is provided with a reversing switch in a connecting mode and is connected into a workshop circuit.

The technical scheme shows that the invention has the following beneficial effects:

1. according to the hot runner forming process and the die thereof with stable temperature rise, the thinning and the precision of temperature regulation are realized through the matrix temperature regulator, the heating uniformity is improved, the product quality is good, the thermal driving is adopted, the mechanical structure is simple, the preparation cost is low, and the damage is not easy.

2. The stable-temperature-rise hot runner forming process and the mold thereof have the advantages that the heat dissipation capacity is improved, the ducted heat dissipation structure is utilized, the heat dissipation capacity is improved, the damage to components due to overheating of a hot runner system is avoided, and the service life of the device is prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a flow field plate according to the present invention;

FIG. 3 is a schematic view of a thermostat according to the present invention;

FIG. 4 is a schematic structural view of the superheat adjustment mechanism of the present invention;

FIG. 5 is a schematic structural view of a first lock module and a second lock module of the present invention;

in the figure: the device comprises a runner plate-1, a heating coil-2, a hot nozzle-3, a heat conducting ring-31, a temperature control box-4, a temperature regulator-5, a temperature regulator bracket-51, a heat conducting channel-52, a movable heat insulation plate-53, a regulating block-54, a heat insulation plate-55, permanent magnetic particles-56, an overheating regulating mechanism-6, a temperature sensor-61, a heat radiating fin-62, a heat radiating fan-63, a flow guiding channel-64, a sliding plate-65, a fixed template-7, a movable template-8, a first locking module-9, a second locking module-10, a mold locking permanent magnet-11 and a mold locking electromagnet-12.

Detailed Description

The invention is further elucidated with reference to the drawings and the embodiments.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

The hot runner forming process with stable temperature rise shown in fig. 1-5 comprises preparation, heating and temperature regulation, and specifically comprises the following steps:

the method comprises the following steps: the preparation method comprises the steps of preparing, wherein the preparation method comprises the following steps of arranging a runner plate 1, heating rings 2, a hot nozzle 3, a temperature control box 4 and a temperature regulator 5, arranging a pouring runner in the runner plate 1, arranging the heating rings 2 on two sides of the pouring runner, arranging the heating rings 2 on the top of the runner plate 1, and arranging the heating rings 2 on the bottom of the runner plate 1; the heating ring 2 is connected with a temperature control box 4; one end of the pouring runner is provided with a hot nozzle 3, the hot nozzle 3 is arranged in the runner plate 1, and the hot nozzle 3 penetrates out of the runner plate 1; a temperature regulator 5 is arranged on the outer side of the pouring flow channel, and the pouring flow channel is wrapped by the temperature regulator 5;

step two: heating, wherein the temperature control box 4 is opened, the heating ring 2 generates heat, and the hot nozzle 3 generates heat;

step three: the temperature regulator 5 regulates the size of the channel according to thermal expansion and pressure difference, and averages the temperature of the pouring channel.

The thermostat 5 in the embodiment comprises a thermostat support 51, a heat conduction channel 52, a movable heat insulation plate 53, an adjusting block 54 and a heat insulation plate 55, wherein the thermostat support 51 is arranged outside the pouring channel, the thermostat supports 51 are provided with a plurality of temperature adjustment plates, the thermostat supports 51 are arranged in a queue, the heat conduction channel 52 is arranged in the thermostat support 51, and the heat conduction channel 52 is made of a heat conduction material; a movable heat insulation plate 53 is arranged on the thermostat bracket 51, the movable heat insulation plate 53 is in sliding contact with the thermostat bracket 51, the movable heat insulation plate 53 penetrates into the heat conduction channel 52, and the movable heat insulation plate 53 is in sliding contact with the heat conduction channel 52; one end of the movable heat insulation plate 53 close to the thermostat bracket 51 is provided with an adjusting block 54, and the adjusting block 54 is made of thermal expansion materials; one side of the adjusting block 54 is provided with a heat insulation plate 55, and the heat insulation plate 55 is arranged in the thermostat support 51.

In the present embodiment, the adjusting block 54 is internally provided with permanent magnetic particles 56, and the thermostat bracket 51 is also provided with permanent magnetic particles 56.

The adjusting block 54 in this embodiment is expanded by heat, so as to push the movable heat-insulating plate 53 to move, thereby blocking the heat conduction of the heat conduction channel 52, and the area with high heat quantity blocks more heat conduction than the area with low heat quantity, so that the heat quantity passing through each area is consistent.

The bottom of the hot nozzle 3 in this embodiment is provided with a heat conduction ring 31, and the heat conduction ring 31 is embedded in the bottom of the runner plate 1.

The runner plate 1 in this embodiment is provided with an overheating adjusting mechanism 6, the overheating adjusting mechanism 6 includes a temperature sensor 61, a heat sink 62, a heat dissipation fan 63, a flow guide channel 64 and a sliding plate 65, one side of the runner plate 1 is provided with the heat sink 62, one end of the heat sink 62 contacts the runner, the other end of the heat sink 62 is provided with the flow guide channel 64, the flow guide channel 64 is arranged in the runner plate 1, the flow guide channel 64 penetrates out of the runner plate 1, the heat dissipation fan 63 is arranged in the flow guide channel 64, and the heat dissipation fan 63 is arranged on two sides of the heat sink 62; the two ends of the flow guide channel 64 are provided with sliding plates 65, the sliding plates 65 are arranged on one side of the guide plate 1, the sliding plates 65 are in sliding contact with the guide plate 1, and the sliding plates 65 are electrically driven; the cooling fan 63 is provided with a temperature sensor 61 in a connected manner, the temperature sensor 61 is embedded in the runner plate 1, and the temperature sensor 61 is connected with the sliding plate 65.

The temperature sensor 61 in this embodiment detects heat, and when the heat exceeds a set value, the temperature sensor 61 responds, the sliding plate 65 slides, the diversion passage 64 communicates with the outside, and the heat dissipation fan 63 is activated.

In this embodiment, the bottom of the runner plate 1 is provided with a fixed template 7, a movable template 8, a first locking module 9, a second locking module 10, a mode locking permanent magnet 11 and a mode locking electromagnet 12, the bottom of the runner plate 1 is provided with the fixed template 7, the bottom of the fixed template 7 is provided with the movable template 8, and the movable template 8 is matched with the fixed template 7; a first lock module 9 is arranged on one side of the fixed wood board 7, a second lock module 10 is arranged on one side of the movable template 8, the second lock module 10 is matched with the first lock module 9, and the second lock module 10 penetrates into the first lock module 9; the second lock module 10 is provided with a mode locking permanent magnet 11, the first lock module 9 is provided with a mode locking electromagnet 12, and the mode locking electromagnet 12 is matched with the mode locking permanent magnet 11.

In this embodiment, the mode locking electromagnet 12 is connected to a reversing switch, and the mode locking electromagnet 12 is connected to a workshop circuit.

Example 2

The hot runner forming process with stable temperature rise shown in fig. 2 comprises preparation, heating and temperature regulation, and specifically comprises the following steps:

Example 3

The hot runner forming process with stable temperature rise shown in fig. 1-3 comprises preparation, heating and temperature regulation, and specifically comprises the following steps:

Example 4

The hot runner forming process with stable temperature rise as shown in fig. 1, 2 and 4 comprises preparation, heating and temperature regulation, and specifically comprises the following steps:

Example 5

The hot runner forming process with stable temperature rise as shown in fig. 1 and 5 comprises preparation, heating and temperature regulation, and specifically comprises the following steps:

The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.

Claims

1. A stable hot runner forming process with temperature rise comprises preparation, heating and temperature regulation, and is characterized in that: the method specifically comprises the following steps:

the method comprises the following steps: the preparation method comprises the steps of preparing the runner plate (1), the heating ring (2), the hot nozzle (3), the temperature control box (4) and the temperature regulator (5), wherein a pouring runner is arranged in the runner plate (1), the heating rings (2) are arranged on two sides of the pouring runner, the heating ring (2) is arranged on the top of the runner plate (1), and the heating ring (2) is arranged on the bottom of the runner plate (1); the heating ring (2) is connected with a temperature control box (4); one end of the pouring runner is provided with a hot nozzle (3), the hot nozzle (3) is arranged in the runner plate (1), and the hot nozzle (3) penetrates out of the runner plate (1); a temperature regulator (5) is arranged on the outer side of the pouring flow channel, and the pouring flow channel is wrapped by the temperature regulator (5);

step two: heating, wherein the temperature control box (4) is opened, the heating ring (2) generates heat, and the hot nozzle (3) generates heat;

step three: the temperature regulator (5) regulates the size of the channel according to thermal expansion and pressure difference, and averages the temperature of the pouring channel.

2. The stable hot runner forming process of claim 1, wherein: the temperature regulator (5) comprises a temperature regulator support (51), a heat conduction channel (52), a movable heat insulation plate (53), a plurality of adjusting blocks (54) and heat insulation plates (55), wherein the temperature regulator support (51) is arranged on the outer side of the pouring flow channel, the temperature regulator supports (51) are arranged in a plurality of rows, the heat conduction channel (52) is arranged in the temperature regulator support (51), and the heat conduction channel (52) is made of heat conduction materials; a movable heat insulation plate (53) is arranged on the thermostat bracket (51), the movable heat insulation plate (53) is in sliding contact with the thermostat bracket (51), the movable heat insulation plate (53) penetrates into the heat conduction channel (52), and the movable heat insulation plate (53) is in sliding contact with the heat conduction channel (52); one end of the movable heat insulation plate (53) close to the thermostat bracket (51) is provided with an adjusting block (54), and the adjusting block (54) is made of thermal expansion materials; and a heat insulation plate (55) is arranged on one side of the adjusting block (54), and the heat insulation plate (55) is arranged in the thermostat support (51).

3. The stable hot runner forming process of claim 2, wherein: the temperature regulator is characterized in that permanent magnetic particles (56) are arranged in the regulating block (54), and the temperature regulator bracket (51) is also provided with the permanent magnetic particles (56).

4. The stable hot runner forming process of claim 3, wherein: the adjusting block (54) expands when heated, the movable heat insulation plate (53) is pushed to move, heat conduction of the heat conduction channel (52) is blocked, and more heat conduction is blocked in a high-heat area compared with a low-heat area, so that the heat passing through each area is consistent.

5. The stable hot runner forming process of claim 1, wherein: the bottom of the hot nozzle (3) is provided with a heat conduction ring (31), and the heat conduction ring (31) is embedded in the bottom of the runner plate (1).

6. The stable hot runner forming process of claim 1, wherein: the runner plate (1) is provided with an overheating adjusting mechanism (6), the overheating adjusting mechanism (6) comprises a temperature sensor (61), a radiating fin (62), a radiating fan (63), a flow guide channel (64) and a sliding plate (65), one side of the runner plate (1) is provided with the radiating fin (62), one end of the radiating fin (62) is in contact with the pouring channel, the other end of the radiating fin (62) is provided with the flow guide channel (64), the flow guide channel (64) is arranged in the flow guide plate (1), the flow guide channel (64) penetrates out of the flow guide plate (1), the radiating fan (63) is arranged in the flow guide channel (64), and the radiating fan (63) is arranged on two sides of the radiating fin (62); sliding plates (65) are arranged at two ends of the flow guide channel (64), the sliding plates (65) are arranged on one side of the flow guide plate (1), the sliding plates (65) are in sliding contact with the flow guide plate (1), and the sliding plates (65) are electrically driven; the cooling fan (63) is connected and is provided with a temperature sensor (61), the temperature sensor (61) is embedded and arranged on the runner plate (1), and the temperature sensor (61) is connected with a sliding plate (65).

7. The stable hot runner forming process of claim 1, wherein: the temperature sensor (61) detects heat, when the heat exceeds a set value, the temperature sensor (61) responds, the sliding plate (65) slides, the flow guide channel (64) is communicated with the outside, and the cooling fan (63) is started.

8. A mold for use in the hot runner molding process according to claim 1, wherein: the bottom of the runner plate (1) is provided with a fixed template (7), a movable template (8), a first locking module (9), a second locking module (10), a mode locking permanent magnet (11) and a mode locking electromagnet (12), the bottom of the runner plate (1) is provided with the fixed template (7), the bottom of the fixed template (7) is provided with the movable template (8), and the movable template (8) is matched with the fixed template (7); a first lock module (9) is arranged on one side of the fixed wood plate (7), a second lock module (10) is arranged on one side of the movable template (8), the second lock module (10) is matched with the first lock module (9), and the second lock module (10) penetrates into the first lock module (9); be provided with mode locking permanent magnet (11) on second lock module (10), be provided with mode locking electro-magnet (12) on first lock module (9), mode locking electro-magnet (12) and mode locking permanent magnet (11) cooperation.

9. A mold for use in the hot runner molding process according to claim 8, wherein: the mode locking electromagnet (12) is connected with a reversing switch, and the mode locking electromagnet (12) is connected into a workshop circuit.