Mold with temperature control mechanism and temperature control method

Abstract

The present application relates to the field of injection molding temperature measurement devices, and more particularly to a mold having a temperature control mechanism and a temperature control method, wherein the mold having the temperature control mechanism includes a male mold push plate and a male mold pad, the male mold push plate and the male mold pad are stacked, the male mold push plate is provided with a connecting cavity, the connecting cavity is provided with a push plate, the male mold pad is provided with a receiving cavity, the receiving cavity is provided with a male mold core; a temperature measuring component for detecting the temperature of the push plate and the male mold core is provided on the side wall of the male mold pad, a cooling component for cooling the male mold core is provided in the male mold core, and a cooling component for cooling the push plate is provided in the push plate. The present application has the effect of reducing the temperature difference between the push plate and the male mold core, and reducing the occurrence of the male mold core being stuck in the push plate.

Description

Technical Field

[0001] The present application relates to the field of injection molding temperature measuring devices, and in particular to a mold with a temperature control mechanism and a temperature control method. Background Art

[0002] Injection molds are the most commonly used molding molds in the production of thermoplastic plastic products. Under the push of the injection molding machine, the plastic enters the mold cavity through the injection molding machine nozzle and the mold's pouring system. The plastic cools and hardens into shape, and the product is demolded to obtain the finished product.

[0003] However, when facing some products composed of multiple empty tubes, such as automated suction heads, there is a large temperature difference between the push plate and the male mold core, causing the male mold core to be stuck in the push plate, making it difficult to demold the product smoothly. Summary of the Invention

[0004] In order to reduce the temperature difference between the push plate and the male mold core and reduce the situation where the male mold core is stuck in the push plate, the present application provides a mold with a temperature control mechanism and a temperature control method.

[0005] This application provides a mold with a temperature control mechanism, which adopts the following technical solutions:

[0006] A mold with a temperature control mechanism, comprising a male mold push plate and a male mold backing plate, the male mold push plate and the male mold backing plate being stacked, the male mold push plate being provided with a connecting cavity, the pushing plate being provided in the connecting cavity, the male mold backing plate being provided with an accommodating cavity, the accommodating cavity being provided with a male mold core;

[0007] A temperature measuring component for detecting the temperature of the push plate and the male mold core is provided on the side wall of the male mold pad, a cooling component for cooling the male mold core is provided in the male mold core, and a cooling component for cooling the push plate is provided in the push plate.

[0008] By adopting the above technical solution, the temperature of the push plate and the male model core is detected in real time by the temperature measuring component, which facilitates the calculation of the temperature difference based on the temperature of the push plate and the male model core. Then, the push plate and the male model core are cooled to different degrees by the cooling component and the cooling component, which facilitates the control of the temperature between the push plate and the male model core, reduces the temperature difference between the push plate and the male model core, and reduces the possibility of the male model core getting stuck.

[0009] In a specific possible implementation scheme, the cooling component includes a plurality of cooling pipes, and the plurality of cooling pipes pass through the male mold core, and the temperature measuring component is connected to the water outlet end of the cooling pipe.

[0010] By adopting the above technical solution, multiple cooling pipes cool different parts of the male mold core, which facilitates more comprehensive cooling of the male mold core. The male mold core is cooled more evenly. When the temperature of the male mold core is measured, the temperature data obtained is more accurate, and it is more convenient to control the temperature difference between the male mold core and the push plate, thereby reducing the possibility of the male mold core being stuck.

[0011] In a specific feasible implementation scheme, an installation cavity is provided in the male mold push plate, a plurality of air holes connected to the installation cavity are provided on the surface of the male mold push plate facing the male mold pad, a vent nozzle is provided on the side wall of the male mold push plate, and a switch assembly for controlling the opening and closing of the air holes is provided in the installation cavity.

[0012] By adopting the above technical method, low-temperature air is blown to the core of the male mold to accelerate the cooling of the male mold core, facilitate and quickly control the temperature of the male mold core, and improve the efficiency of controlling the temperature difference between the push plate and the male mold core.

[0013] In a specific possible implementation scheme, a closed ring is provided on the side of the male mold push plate facing the male mold pad, a slot for accommodating the closed ring is provided on the side of the male mold pad facing the male mold push plate, an exhaust nozzle is connected to the closed ring, and a receiving groove for accommodating the exhaust nozzle is provided on the side wall of the male mold pad.

[0014] By adopting the above technical solution, the gap between the push plate and the male mold core is closed, and the air between the push plate and the male mold core is extracted outward by the air exhaust nozzle, thereby accelerating the flow of air and improving the cooling efficiency of the male mold core.

[0015] In a specific possible implementation scheme, the switch assembly includes a movable plate and a plurality of closed columns, the movable plate is arranged in the installation cavity, and the plurality of closed columns are arranged at intervals on the side of the movable plate facing the air hole, a plurality of connecting rods are provided in the installation cavity, and a guide slope is provided on one end of the connecting rod close to the movable plate, and the movable plate is driven by the guide slope to approach or move away from the air hole.

[0016] By adopting the above technical solution, pushing and pulling the connecting rod can drive the movable plate to move in the installation cavity, and drive the closing column to control the opening and closing of the air hole, so as to facilitate and quickly deliver and close the low-temperature air.

[0017] In a specific possible implementation scheme, a transmission plate is provided on the side wall of the male mold push plate, and an end of the transmission plate close to the connecting rod is provided with a push-up slope, and an end of the connecting rod close to the transmission plate is provided with a driven slope, and the driven slope is in contact with the push-up slope, and an elastic member is provided between the male mold push plate and the inner wall of the mounting cavity.

[0018] By adopting the above technical solution, when the male mold push plate is away from the male mold pad, the male mold push plate drives the transmission plate and the connecting rod to slide relative to each other, so that the connecting rod pushes the movable plate away from the air hole, which facilitates the automatic opening of the air hole.

[0019] In a specific possible implementation scheme, a clearance groove is opened on the side wall of each of the sealing columns, and a sealing ring is provided in each of the clearance grooves.

[0020] By adopting the above technical solution, the sealing ring seals the gap between the closing column and the pore, thereby improving the sealing effect of the closing column on the pore.

[0021] This application also provides a mold temperature control method, which adopts the following technical solution:

[0022] A mold temperature control method comprises the following steps:

[0023] Step 1: Detect the temperature of the push plate and the core of the male mold at the same time, record them in real time, and monitor the temperature difference between the push plate and the core of the male mold in real time;

[0024] Step 2: According to the temperature difference between the push plate and the male mold core, adjust the temperature of the coolant introduced into the male mold core or the push plate so that the temperature between the push plate and the male mold core is maintained within a certain range.

[0025] By adopting the above technical solution, the temperatures of the push plate and the male mold core are measured separately, and the push plate and the male mold core are cooled separately, which makes it convenient to adjust the cooling efficiency of the push plate and the male mold core according to the temperature difference between the push plate and the male mold core.

[0026] In a specific embodiment, when the push plate and the male mold core are cooled, the temperature of the push plate is higher than the temperature of the male mold core.

[0027] By adopting the above technical solution, the temperature of the push plate is higher than the temperature of the male mold core, which makes the relative movement between the push plate and the male mold core more convenient and reduces the occurrence of mold jamming.

[0028] In a specific embodiment, the temperature difference t between the push plate and the male mold core satisfies 5°C≤t≤10°C.

[0029] By adopting the above technical solution, the temperature between the push plate and the male mold core is controlled at 5°C-10°C, which facilitates the relative movement between the push plate and the male mold core and reduces the occurrence of mold jamming.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. The temperatures of the push plate and the male mold core are measured separately, and the male mold core and the push plate are cooled by the cooling component and the temperature reduction component. This facilitates adjusting the cooling efficiency of the male mold core and the push plate according to the temperature difference between the push plate and the male mold core, and facilitates controlling the temperature difference between the push plate and the male mold core to reduce the occurrence of mold jamming.

[0032] 2. Set air holes to cool the male mold core, improve the cooling efficiency of the male mold core, and facilitate the rapid adjustment of the temperature difference between the male mold core and the push plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0034] Figure 2 It is an exploded view showing the internal structure of the male mold pad.

[0035] Figure 3 It is a structural diagram of the male mold push plate.

[0036] Figure 4 It is a cross-sectional view showing the internal structure of the male mold pad.

[0037] Figure 5 yes Figure 4 A local enlarged schematic diagram of point A in the middle.

[0038] Explanation of the accompanying drawings: 1. Male mold pad; 2. Male mold push plate; 3. Connecting cavity; 4. Accommodating cavity; 5. Push plate; 6. Male mold core; 7. Temperature measuring assembly; 71. First temperature sensor; 72. First temperature measuring rod; 73. Second temperature measuring rod; 74. Second temperature sensor; 8. Switch assembly; 81. Moving plate; 82. Closing column; 83. Sealing ring; 84. Makeshift groove; 85. Elastic part; 11. Cooling pipe; 12. Cold pipe; 13. Vent nozzle; 14. Mounting cavity; 15. Air hole; 16. Connecting rod; 17. Transmission plate; 18. Guide slope; 19. Push-up slope; 20. Pad; 21. Closing ring; 22. Exhaust nozzle; 23. Slot; 24. Accommodating groove. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-5 This application is described in further detail.

[0040] Reference Figure 1 The mold with a temperature control mechanism includes a male mold push plate 2 and a male mold pad 1. The male mold push plate 2 and the male mold pad 1 are stacked. A connecting cavity 3 is opened on the male mold push plate 2, and a push plate 5 is arranged in the connecting cavity 3. A accommodating cavity 4 is opened on the male mold pad 1, and a male mold core 6 is arranged in the accommodating cavity 4.

[0041] Reference Figure 1and Figure 2 A cooling assembly for cooling the core 6 is provided within the male mold core 6. The cooling assembly includes multiple cooling tubes 11, which penetrate the male mold core 6 and the male mold backing plate 1, with both ends of the cooling tubes 11 extending through the sidewalls of the male mold backing plate 1. A cooling assembly for cooling the push plate 5 is provided within the push plate 5. The cooling assembly includes multiple cooling tubes 12, which penetrate the push plate 5 and the male mold push plate 2, with both ends of the cooling tubes 12 extending through both ends of the male mold push plate 2. By passing coolant through the cooling tubes 12 and cooling tubes 11, the push plate 5 and the core 6 can be cooled by the coolant, thereby cooling the product within the mold.

[0042] Reference Figure 1 and Figure 2 A temperature measuring assembly 7 for detecting the temperature of the push plate 5 and the male mold core 6 is provided on the side wall of the male mold backing plate 1. The temperature measuring assembly 7 includes a first temperature sensor 71, a second temperature sensor 74, multiple first temperature measuring rods 72, and multiple second temperature measuring rods 73. The first temperature measuring rod 72 passes through the side wall of the male mold push plate 2 and is connected to the push plate 5. The first temperature measuring rod 72 is connected to the first temperature sensor 71 via a wire. Multiple second temperature measuring rods 73 are provided at the water outlet of the cooling pipe 11. The second temperature measuring rods 73 are connected to the second temperature sensor 74 via a wire. An alarm is electrically connected to both the first temperature sensor 71 and the second temperature sensor 74. During continuous production, the temperature of the push plate 5 and the male mold core 6 continues to rise. The alarm is set according to a pre-set threshold. When the temperature measured by the first temperature sensor 71 and the second temperature sensor 74 reaches the threshold, the alarm sounds an alarm, which facilitates the control of the temperature of the coolant in the cold pipe 12 and the cooling pipe 11, improves the cooling efficiency of the push plate 5 and the male mold core 6, and facilitates the control of the temperature of the push plate 5 and the male mold core 6. At the same time, based on the temperature displayed on the first temperature sensor 71 and the second temperature sensor 74, it is convenient to understand the temperature difference between the push plate 5 and the male mold core 6. By controlling the difference in the temperature of the coolant entering the cold pipe 12 and the cooling pipe 11, the temperature difference between the push plate 5 and the male mold core 6 is controlled, which facilitates reducing the temperature difference between the push plate 5 and the male mold core 6 and reducing the possibility of mold jamming.

[0043] Reference Figure 3 and Figure 4, a mounting cavity 14 is provided in the male mold pad 1, and a plurality of air holes 15 connected to the mounting cavity 14 are provided on the side of the male mold pad 1 facing the male mold push plate 2. A plurality of vent nozzles 13 are connected on the side wall of the male mold pad 1, and a switch component 8 for controlling the opening and closing of the air holes 15 is provided in the mounting cavity 14. During the injection molding operation, the switch component 8 closes the air holes 15, making it difficult for air to circulate, thereby facilitating the production of the product. When a large temperature difference occurs between the male mold core 6 and the push plate 5, the vent nozzle 13 introduces low-temperature air into the mounting cavity 14, and the switch component 8 opens the air holes 15. The low-temperature air is blown from the air holes 15 to the male mold push plate 2 to cool the male mold core 6, thereby increasing the cooling speed of the male mold core 6 and facilitating the rapid reduction of the temperature difference between the push plate 5 and the male mold core 6.

[0044] Reference Figure 3 and Figure 4 The switch assembly 8 includes a movable plate 81 and a plurality of closed columns 82. The movable plate 81 is disposed within the mounting cavity 14. The plurality of closed columns 82 are fixed at intervals on the surface of the movable plate 81 facing the air holes 15. The closed columns 82 are arranged in a one-to-one correspondence with the air holes 15. The diameter of the air holes 15 gradually increases along the axial direction within the mounting cavity 14, and the diameter of the closed columns 82 gradually increases as it approaches the movable plate 81. An elastic member 85 is sleeved on the closed columns 82. In this embodiment, the elastic member 85 is a spring. One end of the spring is fixed to the inner wall of the mounting cavity 14, and the other end is fixed to the surface of the movable plate 81 facing the closed columns 82. A plurality of connecting rods 16 are provided in the installation cavity 14. A guiding slope 18 is provided at one end of the connecting rod 16 close to the movable plate 81. The edge of the movable plate 81 is in contact with the guiding slope 18. As the movable plate 81 moves deeper into the installation cavity 14, the guiding slope 18 can push the movable plate 81 away from the air hole 15. On the contrary, the connecting rod 16 is detached from the installation cavity 14, and the movable plate 81 approaches the air hole 15 along the guiding slope 18 under the action of the spring.

[0045] Reference Figure 3 and Figure 4 Normally, the spring is in a stretched state, pulling the closing post 82 into the air hole 15. The closing post 82 seals the air hole 15, preventing air from flowing out of the mounting cavity 14. When rapid cooling of the male mold core 6 is required, the connecting rod 16 is inserted into the mounting cavity 14, pushing the movable plate 81 away from the air hole 15. This further stretches the spring and causes the closing post 82 to open the air hole 15. Air in the mounting cavity 14 can flow toward the male mold core 6, rapidly cooling it.

[0046] Reference Figure 4 and Figure 5Each closing column 82 has a sidewall with a clearance groove 84, and a sealing ring 83 is clamped in the clearance groove 84. The sealing ring 83 seals the gap between the closing column 82 and the air hole 15, blocking the air from flowing into the male mold core 6 and reducing the impact of low-temperature air on the product in the mold.

[0047] Reference Figure 3 and Figure 4 , a plurality of pads 20 are fixed on the side wall of the male mold push plate 2, and a transmission plate 17 is fixed on each pad 20. The transmission plate 17 extends toward the connecting rod 16, and a push-up bevel 19 is provided on the end of the transmission plate 17 close to the connecting rod 16. A driven bevel is provided on the end of the connecting rod 16 close to the transmission plate 17, and the push-up bevel 19 fits in with the driven bevel. During the mold opening process, the male mold push plate 2 and the male mold backing plate 1 move away from each other, and the push-up bevel 19 of the transmission plate 17 pushes the connecting rod 16 into the installation cavity 14, thereby automatically opening the air hole 15 on the male mold backing plate 1. Conversely, during the mold closing process, under the action of the elastic force of the spring and the transmission action of the movable plate 81, the connecting rod 16 moves out of the installation cavity 14, and the driven bevel slides along the push-up bevel 19 of the transmission plate 17, thereby improving the movement accuracy of the connecting rod 16 and facilitating the cooling of the male mold core 6 during the next demolding.

[0048] Reference Figure 3 and Figure 4 A closed ring 21 is provided on the side of the male mold push plate 2 facing the male mold pad 1, and a slot 23 for accommodating the closed ring 21 is provided on the side of the male mold pad 1 facing the male mold push plate 2. A plurality of exhaust nozzles 22 are connected to the closed ring 21, and a receiving groove 24 for accommodating the exhaust nozzles 22 is provided on the side wall of the male mold pad 1. The closed ring 21 seals the gap between the male mold push plate 2 and the male mold pad 1, reducing the low-temperature air ejected from the air hole 15 from flying to the outside, and facilitating centralized cooling of the male mold core 6. The exhaust nozzle 22 exhausts the cavity between the male mold pad 1 and the male mold push plate 2, so that the air pressure tends to be stable, and accelerates the flow of low-temperature air, thereby improving the cooling efficiency of the male mold core 6.

[0049] The implementation principle of the embodiment of the present application is as follows: the first temperature measuring rod 72 and the first temperature sensor 71 detect the temperature of the push plate 5, and the second temperature measuring rod 73 and the second temperature sensor 74 detect the temperature of the male mold core 6, thereby facilitating the temperature control of the push plate 5 and the male mold core 6. By separately measuring the temperature of the male mold core 6 and the temperature of the push plate 5, it is convenient to understand the temperature difference between the push plate 5 and the male mold core 6. By passing coolant of different temperatures into the cooling pipe 11 and the cold pipe 12, the push plate 5 and the male mold core 6 are cooled to different degrees, thereby controlling the temperature difference between the push plate 5 and the male mold core 6 and reducing the possibility of mold jamming.

[0050] The present application also discloses a mold temperature control method, which uses the above mold and includes the following steps:

[0051] Step 1: Use the first temperature sensor 71 to detect the temperature of the push plate 5, and the second temperature sensor 74 to detect the temperature of the male mold core 6. These temperatures are recorded in real time, and the temperature difference t between the push plate 5 and the male mold core 6 is monitored in real time. Different coolants are introduced into the cooling pipes 11 and 12 to cool the push plate 5 and the male mold core 6 to varying degrees. The readings from the first and second temperature sensors 71 and 74 are used to control the temperature of the push plate 5 to always be higher than that of the male mold core 6.

[0052] Step 2: Adjust the temperature of the coolant flowing into the male mold core 6 or the push plate 5 according to the temperature difference t between the push plate 5 and the male mold core 6. The temperature difference t between the push plate 5 and the male mold core 6 satisfies 5°C≤t≤10°C.

[0053] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A mold with a temperature control mechanism, characterized in that: The invention comprises a male mold push plate (2) and a male mold pad (1), wherein the male mold push plate (2) and the male mold pad (1) are stacked, a connecting cavity (3) is provided on the male mold push plate (2), a push plate (5) is provided in the connecting cavity (3), a receiving cavity (4) is provided on the male mold pad (1), a male mold core (6) is provided in the receiving cavity (4); a temperature measuring component (7) for detecting the temperature of the push plate (5) and the male mold core (6) is provided on the side wall of the male mold pad (1), a cooling component for cooling the male mold core (6) is provided in the male mold core (6), and a cooling component for cooling the push plate (5) is provided in the push plate (5); The cooling assembly comprises a plurality of cooling pipes (11), the plurality of cooling pipes (11) passing through the male model core (6), and the temperature measuring assembly (7) is connected to the water outlet end of the cooling pipe (11); A mounting cavity (14) is provided in the male mold pad (1), a plurality of air holes (15) communicating with the mounting cavity (14) are provided on a surface of the male mold pad (1) facing the male mold push plate (2), a vent nozzle (13) is provided on the side wall of the male mold pad (1), and a switch assembly (8) for controlling the opening and closing of the air holes (15) is provided in the mounting cavity (14).

2. The mold with a temperature control mechanism according to claim 1, characterized in that: A closed ring (21) is provided on the side of the male mold push plate (2) facing the male mold pad (1), a slot (23) for accommodating the closed ring (21) is provided on the side of the male mold pad (1) facing the male mold push plate (2), an air extraction nozzle (22) is connected to the closed ring (21), and a receiving groove (24) for accommodating the air extraction nozzle (22) is provided on the side wall of the male mold pad (1).

3. The mold with a temperature control mechanism according to claim 1, characterized in that: The switch assembly (8) includes a movable plate (81) and a plurality of closed columns (82). The movable plate (81) is arranged in the installation cavity (14). The plurality of closed columns (82) are arranged at intervals on a surface of the movable plate (81) facing the air hole (15). A plurality of connecting rods (16) are provided in the installation cavity (14). An end of the connecting rod (16) close to the movable plate (81) is provided with a guiding inclined surface (18). The movable plate (81) is driven by the guiding inclined surface (18) to approach or move away from the air hole (15).

4. The mold with a temperature control mechanism according to claim 3, characterized in that: A transmission plate (17) is provided on the side wall of the male mold push plate (2), and a push-up inclined surface (19) is provided at one end of the transmission plate (17) close to the connecting rod (16). A driven inclined surface is provided at one end of the connecting rod (16) close to the transmission plate (17), and the driven inclined surface is in contact with the push-up inclined surface (19). An elastic member (85) is provided between the male mold push plate (2) and the inner wall of the mounting cavity (14).

5. The mold with a temperature control mechanism according to claim 4, characterized in that: A clearance groove (84) is provided on the side wall of each of the sealing columns (82), and a sealing ring (83) is provided in each of the clearance grooves (84).

6. A mold temperature control method, characterized in that: The mold with a temperature control mechanism according to any one of claims 1 to 5 is used, comprising the following steps: Step 1: Detect the temperature of the push plate and the core of the male mold at the same time, record them in real time, and monitor the temperature difference between the push plate and the core of the male mold in real time; Step 2: According to the temperature difference between the push plate and the male mold core, adjust the temperature of the coolant introduced into the male mold core or the push plate so that the temperature between the push plate and the male mold core is maintained within a certain range.

7. The mold temperature control method according to claim 6, characterized in that: When the push plate and the male mold core are cooled, the temperature of the push plate is made higher than the temperature of the male mold core.

8. The mold temperature control method according to claim 7, characterized in that: The temperature difference t between the push plate and the male mold core satisfies 5°C≤t≤10°C.

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