Processing mold and method for blister box with circulating cooling function

Abstract

The invention discloses a plastic uptake box machining mold with a circulating cooling function and a method, and relates to the technical field of plastic uptake box machining.The machining mold comprises a mold frame, a mold core, two pressing mechanisms and a cooling mechanism, the plastic uptake box machining mold is a lower mold, and during working, a plastic sheet is pressed to a mold core surface forming main body through an upper mold; the die drives the telescopic base to move forwards through the driving air cylinders at the four corners, the movable connecting rods are driven to enable the movable long arms and the movable short arms to move, then the long movable buckles and the short movable buckles are pushed to tightly press and shape the edges of the sheets, the sheets are synchronously cooled on the two sides through a cooling mechanism and an equipment cooling system arranged in the die, and the blister box is evenly and rapidly shaped.

Description

Technical Field

[0001] This invention relates to the field of blister box processing technology, specifically a processing mold and method for blister boxes with an added circulating cooling function. Background Technology

[0002] Blister boxes are widely used in food packaging, pharmaceutical packaging, electronic component packaging and other fields due to their advantages such as being lightweight, portable and transparent. The forming process of blister boxes is based on heating thermoplastic sheets to a softened state, then using a mold to adsorb the sheet or using an upper and lower mold to press it together, thereby shaping the blister box, and finally cooling and solidifying it to obtain the blister box of the desired shape.

[0003] In existing technology, blister box processing molds typically include an upper mold and a lower mold. The lower mold has a cavity that matches the shape of the blister box, and the upper mold has a corresponding punch or a pressing surface for applying pressure. The upper and lower molds press together to shape the sheet material. During the shaping process, the plastic sheet may soften unevenly after heating, especially at the corners and sides of the cavity. This means that the shaping process relies solely on the closing of the upper and lower molds, which can easily lead to defects such as incomplete shaping and wrinkles at the sides of the blister box. As a result, the blister box needs to be reworked and reshaped, thus reducing the processing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a processing mold and method for blister boxes with an added circulating cooling function, so as to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A processing mold for a blister box with a circulating cooling function is used in conjunction with an upper mold. The processing mold includes a mold frame, a pressing mechanism and a cooling mechanism. A mold core is provided in the middle of the mold frame, a base is provided at the bottom of the mold frame, and cylinder connecting rod mechanisms are provided at the bottom corners of the mold frame. The mold frame is provided with a sealing component.

[0007] The cooling mechanism includes a heat spreader and a regulating plate;

[0008] An adjustable compensation gap is provided between the clamping mechanism and the cavity of the mold frame, and the heat spreader adjusts the instantaneous cooling amount of the mold frame and mold core through the adjustment plate.

[0009] The blister box uses a lower mold as its processing mold. The mold is mounted on the processing table of the processing equipment via a base. The equipment uses a drive mechanism to bring the upper mold into contact with the plastic sheet and apply pressure, causing the plastic sheet to fit tightly against the inner wall of the mold core. An adjustable compensation gap is set between the pressing mechanism and the cavity of the mold frame, allowing the pressing mechanism to press the material on the edge of the sheet after the upper mold is pressed, thus performing secondary shaping on the edge of the sheet. The mold frame is sealed by installing two sealing components on the outside of the mold frame and a base at the bottom. The cooling mechanism and the processing equipment's cooling system cool both sides of the sheet, allowing the blister box to cool and solidify. When the temperature is high, the adjusting component raises the adjusting plate, thereby increasing the cooling capacity of the heat spreader and accelerating the cooling rate of the mold frame and mold core. When the temperature is low, the adjusting plate lowers, reducing the cooling capacity and thus decreasing the cooling rate of the mold frame and mold core. Adjusting the instantaneous cooling capacity ensures uniform cooling of the sheet.

[0010] Furthermore, the clamping mechanism includes a long movable buckle and a short movable buckle. The mold frame 1 is slidably connected to the long movable buckle and the short movable buckle respectively. The two long movable buckles and the two short movable buckles are matched with the mold cavity on the side near the mold core. The long movable buckle and the short movable buckle are perpendicular to each other on the same horizontal plane. A movable long arm is provided below the long movable buckle, and a movable short arm is provided below the short movable buckle. A cylinder linkage mechanism is used to drive the long movable buckle and the short movable buckle to move linearly.

[0011] Before clamping: The long and short movable buckles are kept away from the cavity of the mold frame;

[0012] After pressing: the long and short movable buckles fit into the cavity of the mold frame.

[0013] The long and short movable buckles initially have a small gap from the mold cavity of the mold frame. The two long and two short movable buckles are matched with the mold cavity on the side near the mold core. Through the cylinder linkage mechanism at the four corners of the bottom of the mold frame, the cylinder linkage mechanism drives the movable long arm and movable short arm to move linearly. The long and short movable buckles are fixed to the movable long arm and movable short arm respectively. The long and short movable buckles are perpendicular to each other on the same horizontal plane, so that the long and short movable buckles linearly contract towards the side of the mold core, so that the long and short movable buckles are close to the mold core and fit into the cavity of the mold frame. This allows the long and short movable buckles to contact the sheet and press the material on the side of the sheet, thereby performing secondary shaping on the material on the side of the sheet.

[0014] Furthermore, the cooling mechanism includes a liquid reservoir, a heat spreader plate with cooling channels, an adjusting plate and the cooling channels being slidably connected, the cooling channels and the adjusting plate being matched, a number of heat-conducting columns on the heat spreader plate, the heat spreader plate being located above the base, a connecting frame on the adjusting plate, a bimetallic strip and a return spring being provided between the connecting frame and the heat spreader plate, and the liquid reservoir plate being used to compensate for the coolant in the cooling channels.

[0015] By setting cooling channels in a heat spreader, with the heat spreader's exterior being made of heat-insulating material and its interior of heat-conducting material, several heat-conducting pillars are fixed at one end to the heat-conducting material of the heat spreader, and the other end of the heat-conducting pillars are firmly connected to the mold core. The heat from the sheet and mold core is conducted to the heat-conducting pillars, and then transferred to the heat spreader. One end of a bimetallic strip is fixed to the heat-conducting layer of the heat spreader, and both ends of a return spring are fixed to the connecting frame and the outside of the heat spreader, respectively. When the temperature rises, the bimetallic strip bends upward due to heat and overcomes the elastic force of the return spring, thereby pushing the connecting frame and adjusting plate to move upward in the cooling channels, making the cooling channels larger, thus reducing the flow resistance of the coolant and accelerating the cooling rate. When the temperature rises, the connecting frame slides under the tension of the return spring, making the cooling channels smaller, thus increasing the flow resistance of the coolant and reducing the cooling rate, thereby adjusting the cooling rate. By setting a reservoir to compensate for the changes in the size of the cooling channels, the coolant is always used to fill the cooling channels.

[0016] Furthermore, each cylinder linkage mechanism includes a drive cylinder and two movable linkages. The mold frame and the drive cylinder are fastened together. The output end of the drive cylinder is provided with a telescopic seat. One end of each of the two movable linkages is rotatably connected to the telescopic seat. The other end of each of the two movable linkages is rotatably connected to the movable long arm and the movable short arm, respectively. The clamping mechanism also includes a linear guide slider. The middle of each of the movable long arm and the movable short arm is fastened to the sliding end of the linear guide slider. The linear guide slider is fastened to the bottom of the mold frame. The movable long arm and the movable short arm are located on the long side and the short side of the mold frame, respectively. The middle of the mold frame is provided with a mounting groove, and the mold core is located on the mounting groove.

[0017] Drive cylinders at the four corners of the bottom of the mold frame extend to push the telescopic seat forward linearly. The telescopic seat is equipped with two movable connecting rods that are rotatably connected by a rotating shaft. The other ends of the two movable connecting rods are respectively rotatably connected to the movable long arm and the movable short arm via a rotating shaft. The middle of the movable long arm and the movable short arm is fixed to the slider of the linear guide rail. The linear guide rail slider is fastened to the bottom of the mold frame, so that the movable long arm and the movable short arm can only move linearly along the guide rail of the linear guide rail slider. Since the movable long arm and the movable short arm are located on the long side and the short side of the mold frame respectively, the long movable buckle and the two short movable buckles are respectively installed on the long side and the short side of the mold cavity. The mold core is installed on the mounting groove in the middle of the mold frame, which in turn drives the long movable buckle and the short movable buckle to retract towards the side of the mold core at the same time.

[0018] Furthermore, the mold frame 1 is provided with limiting blocks on both the long and short sides. The long movable buckle is provided with a long side limiting groove, and the short movable buckle is provided with a short side limiting groove. The limiting blocks cooperate with the long side limiting groove and the short side limiting groove. The mold frame is provided with a bevel, which cooperates with the chamfer of the short movable buckle and the long movable buckle.

[0019] By providing limiting blocks on both the long and short sides of the mold frame, and setting long-side limiting grooves and short-side limiting grooves on the side of the long and short movable buckles away from the mold core, the retraction distance of the long and short movable buckles is limited, preventing the sheet material from being pressed into the space between the mold frame and the sealing assembly. By providing an inclined surface on the mold frame, which cooperates with the chamfer of the short and long movable buckles, the long and short movable buckles retract towards the edge of the mold core and stop at the designated position, avoiding excessive compression, thereby pressing and shaping the material on the edge of the mold core.

[0020] Furthermore, the sealing assembly includes a long side sealing plate and a short side sealing plate. The long side and short side of the mold frame 1 are respectively fastened to the two long side sealing plates and the two short side sealing plates. A long upper sealing plate and a short upper sealing plate are respectively provided above the long side sealing plates and the short side sealing plates. The long side sealing plates and the short side sealing plates are fastened to the base. A heat sink and a water pump are provided on the heat dissipation plate. The heat sink, cooling channel, water pump and liquid storage bladder are connected by pipes. The heat sink, water pump and liquid storage bladder are located inside the mold.

[0021] By setting long side sealing plates and short side sealing plates outside the mold frame, and setting long upper sealing plates and short upper sealing plates above the long side sealing plates and short upper sealing plates respectively, together with the base at the bottom of the mold frame, a sealed cavity is formed with the mold frame 1 and the base. By installing a radiator, a water pump and a liquid storage tank on the outside of the heat spreader plate with heat insulation material, the liquid storage tank, the water pump output end, the cooling channel inlet, the cooling channel outlet, the radiator and the liquid storage tank are connected in sequence through pipes. When the water pump works, the coolant in the liquid storage tank circulates in the cooling channel to circulate and cool the heat spreader plate.

[0022] The processing method includes the following steps:

[0023] S1: Mold preparation: Select the upper and lower molds of the appropriate size according to the blister box to be processed, install the lower mold on the processing table of the processing equipment, install the upper mold corresponding to the pressing boss and mold core at the power cylinder of the processing equipment, lock each connection part by locking the locking nut, connect the controller to each actuator and set the parameters;

[0024] S2: Product pretreatment. After the mold assembly is completed, the intelligent temperature control system of the processing equipment is activated. The thermoplastic sheet is conveyed to the space between the lower and upper molds through the conveying mechanism. The heating tube of the heating mechanism is activated. The heating tube is aimed at the cavity between the mold frame and the mold core to heat the PVC or PET plastic sheet. The heating temperature is monitored in real time by the temperature sensor on the processing equipment and the temperature signal is fed back to the controller. The controller controls the working status of the heating tube to keep the temperature of the cavity between the mold frame and the mold core within the preset range, thereby preheating the sheet.

[0025] S3: Mold closing and shaping. After the plastic sheet is preheated to a softened state, the upper mold is driven to move downward through the drive mechanism of the processing equipment. Through the pressing mechanism, the boss of the upper mold contacts the plastic sheet and applies pressure, thereby making the plastic sheet adhere to the inner wall of the mold core of the lower mold, thus initially shaping the blister box.

[0026] S4: Secondary shaping. The pressure sensor monitors the pressure between the upper and lower molds and feeds the pressure signal back to the control system through the feedback device. The control system adjusts the pressing pressure in real time. Then, the drive cylinder pushes the telescopic seat to move linearly, so that the movable connecting rod pulls the movable long arm and movable short arm to slide linearly towards the mold core along the linear guide slider. This causes the two long movable buckles and two short movable buckles to retract towards the side of the mold core, pressing the material on the side of the mold core inward and compacting it.

[0027] S5: Cooling and shaping. After pressing and compacting the material, the air-cooling or liquid-cooling system of the processing equipment is activated to cool the sheet. At the same time, the heat of the sheet is transferred to several heat-conducting pillars through the mold core. The heat-conducting pillars transfer the heat to the heat spreader plate. The water pump is activated to pump the coolant from the reservoir into the cooling channel to cool the heat spreader plate. The coolant flows out of the cooling channel, is cooled by the radiator, and returns to the reservoir, achieving self-circulation and thus achieving the effect of circulating cooling to cool the blister box.

[0028] S6: Demolding and part removal. After the blister box cools and solidifies, the cylinder of the drive mechanism of the processing equipment drives the upper mold to move upward, so that the upper mold and the lower mold are separated, thereby removing the formed blister box product from the mold core and completing the demolding, which facilitates the reduction of subsequent processing.

[0029] S7: Tail processing. The mold enters the cleaning cycle and is cleaned using electrostatic dust removal or ultrasonic water washing to prepare for the next production cycle.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] 1. By setting up a cylinder linkage mechanism in conjunction with a clamping mechanism, after the upper and lower molds are pressed together, the cylinder is driven to work, causing the long and short movable buckles to retract towards the mold core, which firmly compresses and shapes the sides of the blister box, avoiding defects such as incomplete shaping and wrinkles on the sides of the blister box, reducing rework and thus improving processing efficiency.

[0032] 2. By setting a cooling mechanism inside the mold, the side of the blister box closest to the mold core is cooled, and the cooling system of the processing equipment is used to cool the side of the blister box away from the mold core. This avoids a huge temperature gradient between the two sides of the plastic sheet, ensuring that the shape of the blister box is stable after demolding, and at the same time improving the cooling rate. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the exploded structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the cooling mechanism of the present invention;

[0036] Figure 4 This is a schematic diagram of the pressing mechanism of the present invention;

[0037] Figure 5 This is a schematic diagram of the inclined plane structure of the present invention;

[0038] Figure 6 yes Figure 3 A magnified view of part A;

[0039] Figure 7 This is a schematic diagram of the cooling channel structure of the present invention;

[0040] Figure 8 This is a schematic diagram of the structure of the product of the present invention;

[0041] Figure 9 This is a schematic diagram showing the connection between the mold frame and the mold core of the present invention;

[0042] Figure 10 This is a schematic diagram showing the connection between the cooling channel and the regulating plate of the present invention.

[0043] In the diagram: 1. Mold frame; 11. Mounting slot; 12. Limiting block; 13. Inclined surface; 2. Mold core; 3. Base; 4. Cylinder connecting rod mechanism; 41. Drive cylinder; 42. Telescopic seat; 43. Movable connecting rod; 5. Clamping mechanism; 51. Long movable buckle; 511. Long side limiting groove; 52. Short movable buckle; 521. Short side limiting groove; 53. Movable long arm; 54. Movable short arm; 55. Linear guide rail slider; 6. Sealing assembly; 61. Long side sealing plate; 62. Short side sealing plate; 63. Long top sealing plate; 64. Short top sealing plate; 7. Cooling mechanism; 71. Heat spreader plate; 711. Cooling channel; 72. Radiator; 73. Water pump; 74. Liquid reservoir; 75. Heat conduction column; 76. Adjusting plate; 761. Connecting frame; 77. Bimetallic strip; 78. Return spring. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1: As Figures 1-10 As shown, the present invention provides a processing mold and method for blister boxes with a circulating cooling function. The processing mold is used in conjunction with the upper mold. The processing mold includes a mold frame 1, a pressing mechanism 5 and a cooling mechanism 7. A mold core 2 is provided in the middle of the mold frame 1, a base 3 is provided at the bottom of the mold frame 1, a cylinder connecting rod mechanism 4 is provided at the bottom corners of the mold frame 1, and a sealing component 6 is provided in the mold frame 1.

[0046] The cooling mechanism 7 includes a heat spreader 71 and an adjusting plate 76;

[0047] An adjustable compensation gap is provided between the clamping mechanism 5 and the cavity of the mold frame 1, and the heat dissipation plate 71 adjusts the instantaneous cooling amount of the mold frame 1 and the mold core 2 through the adjustment plate 76.

[0048] The blister box uses a lower mold as its processing mold. The mold is mounted on the processing table of the processing equipment via a base 3. The equipment uses a drive mechanism to bring the upper mold into contact with the plastic sheet and apply pressure, so that the plastic sheet is tightly attached to the inner wall of the mold core 2. An adjustable compensation gap is set between the pressing mechanism 5 and the cavity of the mold frame 1, so that the pressing mechanism 5 can press the material on the side of the sheet after the upper mold is pressed, thereby performing secondary shaping on the side of the sheet. The mold frame 1 is sealed by installing two sealing components 6 on the outside of the mold frame 1 and the base 3 at the bottom. The cooling mechanism 7 and the cooling system of the processing equipment cool both sides of the sheet, so that the blister box is cooled and shaped. When the temperature is high, the adjusting component raises the adjusting plate 76, thereby increasing the cooling amount of the heat spreader 71, and thus accelerating the cooling rate of the mold frame 1 and the mold core 2. When the temperature is low, the adjusting plate 76 lowers, thereby decreasing the cooling amount, and thus reducing the cooling rate of the mold frame 1 and the mold core 2. The instantaneous cooling amount is adjusted to make the sheet cool evenly.

[0049] like Figure 2 and Figure 5 As shown, the clamping mechanism 5 includes a long movable buckle 51 and a short movable buckle 52. The mold frame 1 is slidably connected to the long movable buckle 51 and the short movable buckle 52 respectively. The two long movable buckles 51 and the two short movable buckles 52 are matched with the mold cavity on the side near the mold core 2. The long movable buckle 51 and the short movable buckle 52 are perpendicular to each other on the same horizontal plane. A movable long arm 53 is provided below the long movable buckle 51, and a movable short arm 54 is provided below the short movable buckle 52. The cylinder linkage mechanism 4 is used to drive the long movable buckle 51 and the short movable buckle 52 to move linearly.

[0050] Before clamping: the long movable buckle 51 and the short movable buckle 52 are far away from the cavity of the mold frame 1;

[0051] After being pressed: the long movable buckle 51 and the short movable buckle 52 fit into the cavity of the mold frame 1.

[0052] The long movable buckle 51 and the short movable buckle 52 initially have a small gap from the mold cavity of the mold frame 1. The two long movable buckles 51 and the two short movable buckles 52 are matched with the mold cavity on the side near the mold core 2. Through the cylinder linkage mechanism 4 at the four corners of the bottom of the mold frame 1, the cylinder linkage mechanism 4 drives the movable long arm 53 and the movable short arm 54 to move linearly. The long movable buckle 51 and the short movable buckle 52 are fixed to the movable long arm 53 and the movable short arm 54 respectively. The long movable buckle 51 and the short movable buckle 52 are perpendicular to each other on the same horizontal plane, so that the long movable buckle 51 and the short movable buckle 52 linearly contract towards the side of the mold core 2, so that the long movable buckle 51 and the short movable buckle 52 fit into the cavity of the mold frame 1 on the side near the mold core 2, so that the long movable buckle 51 and the short movable buckle 52 contact the sheet and press the material on the side of the sheet, thereby performing secondary shaping on the material on the side of the sheet.

[0053] like Figure 3 , Figure 6 , Figure 7 and Figure 10 As shown, the cooling mechanism 7 includes a liquid reservoir 74, a heat spreader 71 with a cooling channel 711, an adjusting plate 76 and a cooling channel 711 slidably connected, the cooling channel 711 and the adjusting plate 76 are matched, the heat spreader 71 is provided with a plurality of heat conduction columns 75, the heat spreader 71 is located above the base 3, the adjusting plate 76 is provided with a connecting frame 761, a bimetallic strip 77 and a return spring 78 are provided between the connecting frame 761 and the heat spreader 71, and the liquid reservoir 74 is used to compensate for the coolant in the cooling channel 711.

[0054] A cooling channel 711 is provided in the heat spreader 71. The heat spreader 71 has an outer heat-insulating material and an inner heat-conducting material. One end of several heat-conducting pillars 75 is fixed to the heat-conducting material of the heat spreader 71, and the other end of the heat-conducting pillars 75 is fastened to the mold core 2. The heat of the sheet and the mold core 2 is conducted to the heat-conducting pillars 75, and then transferred to the heat spreader 71 through the heat-conducting pillars 75. One end of the bimetallic strip 77 is fixed to the heat-conducting layer of the heat spreader 71. The two ends of the return spring 78 are fixed to the connecting frame 761 and the outside of the heat spreader 71, respectively. When the temperature rises, the bimetallic strip 77 is heated and flows towards the outside of the heat spreader 71. The upward bending overcomes the elastic force of the return spring 78, thereby pushing the connecting frame 761 and the adjusting plate 76 to move upward in the cooling channel 711, making the cooling channel 711 larger, thereby reducing the flow resistance of the coolant and accelerating the cooling rate. When the temperature rises, the connecting frame 761 slides under the tension of the return spring 78, making the cooling channel 711 smaller, thereby increasing the flow resistance of the coolant and reducing the cooling rate, thus adjusting the cooling rate. By setting the reservoir 74 to compensate for the change in the size of the cooling channel 711, the coolant is always fully filled in the cooling channel 711.

[0055] like Figures 2-4 and Figure 9As shown, each cylinder linkage mechanism 4 includes a drive cylinder 41 and two movable linkages 43. The mold frame 1 and the drive cylinder 41 are fastened together. The output end of the drive cylinder 41 is provided with a telescopic seat 42. One end of the two movable linkages 43 is rotatably connected to the telescopic seat 42. The other end of the two movable linkages 43 is rotatably connected to the movable long arm 53 and the movable short arm 54, respectively. The clamping mechanism 5 also includes a linear guide slider 55. The middle parts of the movable long arm 53 and the movable short arm 54 are fastened together with the sliding end of the linear guide slider 55. The linear guide slider 55 is fastened together with the bottom of the mold frame 1. The movable long arm 53 and the movable short arm 54 are located on the long side and the short side of the mold frame 1, respectively. The middle part of the mold frame 1 is provided with a mounting groove 11. The mold core 2 is located on the mounting groove 11.

[0056] Drive cylinders 41 at the four corners of the bottom of mold frame 1 extend to push telescopic seat 42 forward linearly. Two movable connecting rods 43 are provided on telescopic seat 42 and are rotatably connected by a rotating shaft. The other ends of the two movable connecting rods 43 are rotatably connected to movable long arm 53 and movable short arm 54 respectively by a rotating shaft. The middle of movable long arm 53 and movable short arm 54 is fixed to the slider of linear guide rail slider 55. Linear guide rail slider 55 is fastened to the bottom of mold frame 1, so that movable long arm 53 and movable short arm 54 can only move linearly along the guide rail of linear guide rail slider 55. Since movable long arm 53 and movable short arm 54 are located on the long side and short side of mold frame 1 respectively, long movable buckle 51 and two short movable buckles 52 are respectively installed on the long side and short side of mold cavity. Mold core 2 is installed on the mounting groove 11 in the middle of mold frame 1, thereby driving long movable buckle 51 and short movable buckle 52 to retract towards the side of mold core 2 at the same time.

[0057] like Figure 5 As shown, the mold frame 1 is provided with limiting blocks 12 on both the long and short sides. The long movable buckle 51 is provided with a long side limiting groove 511, and the short movable buckle 52 is provided with a short side limiting groove 521. The limiting blocks 12 cooperate with the long side limiting groove 511 and the short side limiting groove 521. The mold frame 1 is provided with a slope 13, which cooperates with the chamfer of the short movable buckle 52 and the long movable buckle 51.

[0058] By providing limiting blocks 12 on both the long and short sides of the mold frame 1, and by providing long side limiting grooves 511 and short side limiting grooves 521 on the side of the long movable buckle 51 and the short movable buckle 52 away from the mold core 2, the movement distance of the long movable buckle 51 and the short movable buckle 52 is limited, thus preventing the sheet material from being pressed into the space between the mold frame 1 and the sealing component 6. By providing an inclined surface 13 on the mold frame 1, which engages with the chamfer of the short movable buckle 52 and the long movable buckle 51, the long movable buckle 51 and the short movable buckle 52 are allowed to retract to the side of the mold core 2 and stop at a designated position, thus avoiding excessive compression. This allows the material on the side of the mold core 2 to be pressed and formed.

[0059] like Figure 2 and Figure 6 As shown, the sealing assembly 6 includes a long side sealing plate 61 and a short side sealing plate 62. The long side and short side of the mold frame 1 are respectively fastened to the two long side sealing plates 61 and the two short side sealing plates 62. A long upper sealing plate 63 and a short upper sealing plate 64 are respectively provided above the long side sealing plates 61 and the short side sealing plates 62. The upper part of the long side sealing plates 61 and the short side sealing plates 62 is fastened to the base 3. A heat sink 72 and a water pump 73 are provided on the heat dissipation plate 71. The heat sink 72, the cooling channel 711, the water pump 73 and the liquid storage bladder 74 are connected by pipes. The heat sink 72, the water pump 73 and the liquid storage bladder 74 are located inside the mold.

[0060] By setting a long side sealing plate 61 and a short side sealing plate 62 outside the mold frame 1, and setting a long upper sealing plate 63 and a short upper sealing plate 64 above the long side sealing plate 61 and the short side sealing plate 62 respectively, together with the base 3 at the bottom of the mold frame 1, a sealed cavity is formed with the mold frame 1 and the base 3. By installing a radiator 72, a water pump 73 and a liquid storage bladder 74 on the outside of the heat spreader 71 with heat insulation material, the liquid storage bladder 74, the output end of the water pump 73, the inlet of the cooling channel 711, the outlet of the cooling channel 711, the radiator 72 and the liquid storage bladder 74 are connected in sequence through pipes. When the water pump 73 works, the coolant in the liquid storage bladder 74 circulates in the cooling channel 711 to circulate and cool the heat spreader 71.

[0061] The processing method includes the following steps:

[0062] S1: Mold preparation: Select the upper and lower molds of the appropriate size according to the blister box to be processed, install the lower mold on the processing table of the processing equipment, install the upper mold corresponding to the pressing boss and mold core 2 at the power cylinder of the processing equipment, lock each connection part by locking the locking nut, connect the controller to each actuator and set the parameters;

[0063] S2: Product pretreatment. After the mold assembly is completed, the intelligent temperature control system of the processing equipment is started. The thermoplastic sheet is conveyed to the space between the lower mold and the upper mold through the conveying mechanism. The heating tube of the heating mechanism is started. The heating tube is aimed at the cavity between the mold frame 1 and the mold core 2 to heat the PVC plastic sheet. The heating temperature range is 120℃ for PVC plastic sheet and 150℃ for PET plastic sheet. The heating temperature is monitored in real time by the temperature sensor on the processing equipment and the temperature signal is fed back to the controller. The controller controls the working state of the heating tube to keep the temperature of the cavity of the mold frame 1 and the mold core 2 within the preset range, thereby preheating the sheet.

[0064] S3: Mold closing and shaping. After the plastic sheet is preheated to a softened state, the upper mold is driven to move downward through the drive mechanism of the processing equipment. Through the pressing mechanism, the boss of the upper mold contacts the plastic sheet and applies pressure, thereby making the plastic sheet adhere to the inner wall of the mold core 2 of the lower mold, thus initially shaping the blister box.

[0065] S4: Secondary shaping. The pressure sensor monitors the pressure between the upper and lower molds and feeds the pressure signal back to the control system through the feedback device. The control system adjusts the pressing pressure in real time. Then, the drive cylinder 41 pushes the telescopic seat 42 to move linearly, so that the movable connecting rod 43 pulls the movable long arm 53 and the movable short arm 54 to slide linearly towards the mold core 2 along the linear guide slider 55. This causes the two long movable buckles 51 and the two short movable buckles 52 to retract towards the side of the mold core 2, pressing the material on the side of the mold core 2 inward and compacting it.

[0066] S5: Cooling and shaping. After pressing and compacting the sheet, the air-cooling system of the processing equipment is started to cool the sheet. At the same time, the heat of the sheet is transferred to several heat-conducting pillars 75 through the mold core 2. The heat-conducting pillars 75 transfer the heat to the heat spreader 71. The water pump 73 is started to pump the coolant in the liquid storage bladder 74 into the cooling channel 711 to cool the heat spreader 71. The coolant flows out of the cooling channel 711, is cooled by the radiator 72, and returns to the liquid storage bladder 74 to achieve self-circulation, thereby achieving the effect of circulating cooling and cooling the blister box. The cooling time is 1 hour.

[0067] S6: Demolding and part removal. After the blister box cools and solidifies, the cylinder of the drive mechanism of the processing equipment drives the upper mold to move upward, so that the upper mold and the lower mold are separated, thereby removing the formed blister box product from the mold core 2 to complete the demolding, which facilitates the reduction of subsequent processing.

[0068] S7: Tail processing. The mold enters the cleaning cycle and is cleaned using electrostatic dust removal for 25 minutes, thus preparing for the next production cycle.

[0069] Example 2:

[0070] In step S2, the heating temperature range is 130℃ for PVC plastic sheets and 170℃ for PET plastic sheets. In step S5, the liquid cooling system of the processing equipment is started to cool the sheets for 1.5 hours. In step S7, the mold is cleaned using ultrasonic water washing for 30 minutes.

[0071] Example 3:

[0072] In step S2, the heating temperature range is 150℃ for PVC plastic sheets and 180℃ for PET plastic sheets. In step S5, the liquid cooling system of the processing equipment is started to cool the sheets for 2 hours. In step S7, the mold is cleaned by ultrasonic water washing for 35 minutes.

[0073] Working Principle: The processing equipment conveys thermoplastic sheet material between the lower and upper molds and heats and softens it. The processing equipment drives the upper mold, corresponding to the cavity between the lower mold frame 1 and the mold core 2, to move downwards, causing the upper and lower molds to close, thus forming the blister box. The drive cylinder 41 pushes the telescopic seat 42 to move linearly, thereby causing the movable connecting rod 43 to pull the movable long arm 53 and movable short arm 54 to slide linearly towards the mold core 2 along the linear guide slider 55. This causes the two long movable buckles 51 and the two short movable buckles 52 to retract towards the side of the mold core 2, pressing the material on the side of the mold core 2 inwards and compacting it. The cooling system of the processing equipment is activated to cool the sheet material, and at the same time, the heat from the sheet material is dissipated through... The heat is transferred from the mold core 2 to several heat-conducting pillars 75, which in turn transfer the heat to the heat spreader 71. The water pump 73 is started to pump the coolant from the reservoir 74 into the cooling channel 711 to cool the heat spreader 71. The coolant flows out of the cooling channel 711, is cooled by the radiator 72, and returns to the reservoir 74, achieving self-circulation and thus achieving the effect of circulating cooling. The bimetallic strip 77 moves the control plate 76 according to the temperature of the heat spreader 71, thereby making the cooling channel 711 larger or smaller to control the cooling rate and cool the blister box. The processing equipment drives the upper mold to move upward, separating the upper mold from the lower mold, thus completing the demolding. Then the mold is cleaned.

[0074] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A processing mold for a blister pack with an integrated circulating cooling function, the processing mold being used in conjunction with an upper mold, characterized in that: The processing mold includes a mold frame (1), a pressing mechanism (5) and a cooling mechanism (7). The mold frame (1) has a mold core (2) in the middle, a base (3) at the bottom of the mold frame (1), a cylinder connecting rod mechanism (4) at the bottom corners of the mold frame (1), and a sealing component (6). The cooling mechanism (7) includes a heat spreader (71) and an adjusting plate (76); An adjustable compensation gap is provided between the clamping mechanism (5) and the cavity of the mold frame (1), and the heat dissipation plate (71) adjusts the instantaneous cooling amount of the mold frame (1) and the mold core (2) through the adjustment plate (76).

2. The processing mold for a blister box with a circulating cooling function according to claim 1, characterized in that: The clamping mechanism (5) includes a long movable buckle (51) and a short movable buckle (52). The mold frame (1) is slidably connected to the long movable buckle (51) and the short movable buckle (52) respectively. The two long movable buckles (51) and the two short movable buckles (52) are matched with the mold cavity on the side near the mold core (2). The long movable buckle (51) and the short movable buckle (52) are perpendicular to each other on the same horizontal plane. A movable long arm (53) is provided below the long movable buckle (51), and a movable short arm (54) is provided below the short movable buckle (52). The cylinder linkage mechanism (4) is used to drive the long movable buckle (51) and the short movable buckle (52) to move linearly. Before pressing: the long movable buckle (51) and the short movable buckle (52) are far away from the cavity of the mold frame (1); After being pressed: the long movable buckle (51) and the short movable buckle (52) fit into the cavity of the mold frame (1).

3. The processing mold for a blister box with a circulating cooling function according to claim 1, characterized in that: The cooling mechanism (7) includes a liquid reservoir (74), the heat spreader (71) is provided with a cooling channel (711), the adjusting plate (76) and the cooling channel (711) are slidably connected, the cooling channel (711) and the adjusting plate (76) are matched, the heat spreader (71) is provided with a plurality of heat-conducting columns (75), the heat spreader (71) is located above the base (3), the adjusting plate (76) is provided with a connecting frame (761), the connecting frame (761) and the heat spreader (71) are provided with a bimetallic strip (77) and a return spring (78), and the liquid reservoir (74) is used to compensate for the coolant in the cooling channel (711).

4. The processing mold for a blister box with a circulating cooling function according to claim 3, characterized in that: Each of the cylinder linkage mechanisms (4) includes a drive cylinder (41) and two movable linkages (43). The mold frame (1) and the drive cylinder (41) are fastened together. The output end of the drive cylinder (41) is provided with a telescopic seat (42). One end of the two movable linkages (43) is rotatably connected to the telescopic seat (42). The other end of the two movable linkages (43) is rotatably connected to the movable long arm (53) and the movable short arm (54) respectively. The clamping mechanism (5) also includes a linear guide slider (55). The middle part of the movable long arm (53) and the movable short arm (54) are fastened together with the sliding end of the linear guide slider (55). The linear guide slider (55) is fastened together with the bottom of the mold frame (1). The movable long arm (53) and the movable short arm (54) are located on the long side and the short side of the mold frame (1) respectively. The middle part of the mold frame (1) is provided with an installation groove (11). The mold core (2) is located on the installation groove (11).

5. A processing mold for a blister box with a circulating cooling function according to claim 2, characterized in that: The mold frame (1) is provided with limiting blocks (12) on both the long and short sides. The long movable buckle (51) is provided with a long side limiting groove (511), and the short movable buckle (52) is provided with a short side limiting groove (521). The limiting block (12) cooperates with the long side limiting groove (511) and the short side limiting groove (521). The mold frame (1) is provided with a slope (13), and the slope (13) cooperates with the chamfer of the short movable buckle (52) and the long movable buckle (51).

6. The processing mold for a blister box with a circulating cooling function according to claim 1, characterized in that: Each of the sealing components (6) includes a long side sealing plate (61) and a short side sealing plate (62). The long side and short side of the mold frame (1) are respectively fastened to the two long side sealing plates (61) and the two short side sealing plates (62). A long upper sealing plate (63) and a short upper sealing plate (64) are respectively provided above the long side sealing plate (61) and the short side sealing plate (62). The long side sealing plate (61) and the short side sealing plate (62) are fastened to the base (3). A radiator (72) and a water pump (73) are provided on the heat spreader (71). The radiator (72), the cooling channel (711), the water pump (73) and the liquid reservoir (74) are connected by pipes. The radiator (72), the water pump (73) and the liquid reservoir (74) are located inside the mold.

7. A method for processing a mold for a blister pack with an integrated circulating cooling function, characterized in that: The processing method using a blister box mold with a circulating cooling function as described in any one of claims 1-6 includes the following steps: S1: Mold preparation: Select the appropriate size upper and lower molds according to the blister box to be processed, install the lower mold on the processing table of the equipment, install the upper mold at the power cylinder of the equipment, connect the controller to each actuator and set the parameters; S2: Product pretreatment, start the intelligent temperature control system of the equipment, transport the thermoplastic sheet to the space between the lower mold and the upper mold through the conveying mechanism, start the heating mechanism to heat the plastic sheet, and monitor the temperature in real time through the temperature sensor, feed the temperature signal back to the controller, and control the heating temperature through the controller; S3: Mold closing and shaping. The upper mold is driven to move downward through the drive mechanism. The upper mold is brought into contact with the plastic sheet and pressure is applied through the pressing mechanism, so that the plastic sheet is attached to the inner wall of the mold core (2) of the lower mold, thereby initially shaping the blister box. S4: Secondary shaping, the pressure between the upper and lower molds is monitored by the pressure sensor, the pressure is adjusted in real time by the pressure sensor feedback device, and then the telescopic seat (42) is moved by the drive cylinder (41), so that the movable connecting rod (43) pulls the movable long arm (53) and the movable short arm (54) to slide, thereby causing the long movable buckle (51) and the short movable buckle (52) to shrink towards the side of the mold core (2) and compact the material on the side of the sheet; S5: Cooling and shaping. Start the equipment's cooling system to cool and shape the blister pack. S6: Demolding and removing parts. After the blister box cools and solidifies, the drive mechanism drives the upper mold to move upward and remove the blister box from the mold core (2), thus completing the demolding. S7: End processing, the mold enters the cleaning cycle, ready for the next production cycle.

8. The processing method of a mold for a blister box with a circulating cooling function according to claim 7, characterized in that: In step S2, the thermoplastic sheet material is PVC or PET.

9. The processing method of a mold for a blister box with a circulating cooling function according to claim 7, characterized in that: The cooling method for step S5, cooling and shaping, is either air cooling or liquid cooling.

10. The processing method of a mold for a blister box with a circulating cooling function according to claim 7, characterized in that: The cleaning method in step S7 is electrostatic dust removal or ultrasonic water washing.

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