Plastic uptake heating forming device

Abstract

The invention relates to the field of plastic suction machines, in particular to a plastic suction heating forming device which comprises a workbench, a conveying belt, a plastic suction mold and the like. The workbench is provided with a conveying belt. And the workbench is connected with a plastic suction mold. Most dust and soft flocks between the surface of the plastic suction mold and a plastic sheet are sucked away through the suction holes, so that when plastic suction is carried out on the branch pipe, no more dust and soft flocks enter the branch pipe, the probability that the branch pipe is blocked is reduced, and meanwhile, during plastic suction, the branch pipe is prevented from being blocked. Due to the fact that the plastic sheets are adsorbed by the suction holes in advance, even if part of the branch pipes are blocked and suction force is insufficient, the plastic sheets cannot be more sucked into the forming grooves with normal suction force, and then the situation that part of the branch pipes in the forming grooves are blocked, and the plastic uptake forming effect of the whole equipment is affected is avoided.

Description

Technical Field

[0001] The invention relates to the field of blister forming machines, in particular to a blister forming heating device. Background Art

[0002] Thermoforming is a plastic processing technology that heats the plastic sheet to soften it, and then passes it through a mold to form the desired shape under vacuum or pressure.

[0003] Existing blister machines usually install blister holes in each mold slot. During blister forming, the plastic sheet will first fit with the upper surface of the mold, so that each mold slot forms an independent closed space. Then, the blister holes in each mold slot will be sucked with the same pressure, so that the molds in each mold slot can be evenly blister formed. However, since the air or airflow carries impurities such as dust and hair, and the plastic sheet will also adhere to the surface after being stored for a long time, and during the movement of the plastic sheet, the mold and the plastic sheet are not completely sealed. At this time, impurities such as dust and hair in the air will enter between the mold and the plastic sheet. Therefore, during the blistering process, dust and hair in the air and dust and hair on the surface of the plastic sheet are easily sucked into the blister holes, resulting in blockage of some blister holes, insufficient suction in some mold slots, and then the mold slots cannot be blistered to form qualified finished products; Furthermore, when some of the blister holes are blocked, the suction of the blocked mold slot is small, while the suction of the normal mold slot with unblocked blister holes is large. Therefore, more plastic sheets will be sucked into the normal mold slot with large suction, resulting in the normal mold slot with unblocked blister holes being unable to blister to form qualified finished products, affecting the blister forming effect of the entire equipment. Summary of the invention

[0004] In order to overcome the shortcomings of the existing blister forming machine that during operation, impurities such as dust and hair on the surface of the plastic sheet and in the air are easily sucked into the blister forming holes, resulting in blockage of some blister forming holes and affecting the blister forming effect, and when the suction of some mold grooves is insufficient, more plastic sheets will be sucked into the normal mold grooves with large suction, affecting the blister forming effect of the entire equipment, the present invention provides a blister forming heating device.

[0005] The technical solution is: a blister heating and forming device, comprising a workbench, a conveyor belt and a blister mold; the workbench is provided with a conveyor belt; the workbench is connected to the blister mold; it also includes a fixed plate, a suction cup, a heater, a clamping plate, an electric telescopic tube, a suction head, a blister assembly and a cutting assembly; the workbench is connected to the fixed plate; the moving assembly is also connected to a heater for heating the plastic sheet; a plurality of suction cups are fixedly connected to the lower side of the fixed plate; an electric telescopic tube is slidably connected in each suction cup; a suction head is fixedly connected to the lower side of each electric telescopic tube; a cutting assembly for cutting and forming plastic parts is connected to each suction cup; a blister assembly for blister forming the heated plastic sheet is connected in the blister mold; a plurality of second electric push rods are fixedly connected in the workbench; the output ends of all the second electric push rods are commonly fixedly connected to a clamping plate for clamping and fixing the plastic sheet; the blister mold is located on the inner side of the clamping plate.

[0006] Furthermore, the blister assembly includes a suction tube and a connecting ring; a plurality of molding grooves are provided on the blister mold; a suction tube is connected inside the blister mold; a plurality of branch tubes are connected to the suction tube; the lower side of each molding groove is connected to two corresponding branch tubes; a plurality of suction holes in a circular array are provided on the outer side of the upper part of each molding groove on the blister mold; a plurality of connecting rings are fixedly connected to the suction tube; each connecting ring is connected to all the suction holes on the outer side of the upper part of the corresponding molding groove.

[0007] Furthermore, the cutting assembly includes a fixing ring and a cutter; a fixing ring is fixedly connected to the lower side of each suction cup; a cutter is fixedly connected to the lower side of each fixing ring; a plurality of cutting grooves are opened on the upper side of each blister mold; each cutting groove is located at the corresponding suction hole.

[0008] Furthermore, it also includes needles; each cutter has a plurality of needles in a circular array on the lower side; the number and position of the needles fixed to the lower side of each cutter are consistent with the number and position of the suction holes on the outer side of the upper part of the corresponding forming groove.

[0009] Further, the maximum diameter of the needle is smaller than the diameter of the suction hole.

[0010] Furthermore, an electric-controlled three-way valve is connected to the connecting end of the external air pump and the suction pipe, and the electric-controlled three-way valve is connected to a collecting box through two connecting pipes. The collecting box is divided into two parts by a partition, and the electric-controlled three-way valve is connected to the two parts of the space of the collecting box through two connecting pipes respectively, and the two parts of the space of the collecting box are connected to the suction pipe through a connecting pipe, wherein a filter is provided at a part of the space of the collecting box and the connecting pipe of the electric-controlled three-way valve, and the channel formed by the space of the collecting box with the filter and the connecting pipe connecting the electric-controlled three-way valve and the suction pipe is an exhaust channel; the channel formed by the space of the collecting box without the filter and the connecting pipe connecting the electric-controlled three-way valve and the suction pipe is an air blowing channel.

[0011] Furthermore, it also includes an arc-shaped gasket; the arc-shaped gasket is fixedly connected to the upper side of the blister mold.

[0012] Furthermore, the arc-shaped gasket is made of high-temperature resistant fluororubber.

[0013] Furthermore, it also includes an electric heating plate; a thermoplastic cavity is provided at the lower side of the heater; the electric heating plate is fixedly connected to the upper side of the thermoplastic cavity; and an air blowing groove is provided in the heater.

[0014] Furthermore, a plurality of heat dissipation holes are provided on the upper side of the heater.

[0015] The beneficial effects are as follows: the present invention realizes the suction of most of the dust and hair impurities between the surface of the blister mold and the plastic sheet through the suction holes. Therefore, when the branch pipe is performing blistering, not much dust and hair will enter the branch pipe, which is beneficial to reduce the probability of the branch pipe being blocked. At the same time, when blistering is performed, because the plastic sheet has been adsorbed by the suction holes in advance, even if part of the branch pipe is blocked and the suction force is insufficient, more plastic sheets will not be sucked into the molding groove with normal suction force, thereby avoiding blockage of the branch pipe in part of the molding groove, affecting the blister molding effect of the entire equipment.

[0016] The cutter enters the cutting groove to shear the molded plastic parts; after the shearing of the molded plastic parts is completed, the suction head is driven downward by the electric telescopic tube, and when the suction head contacts the cooled and molded plastic parts in the molding groove, the external air pump is started to make the suction head generate suction force, and the molded plastic parts are sucked up by the suction head, thereby completing the shearing and demolding of the molded plastic parts at one time; different from the existing method, there is no need to transport the plastic sheets to the shearing equipment for shearing after demolding, which reduces the process, improves production efficiency, reduces production costs, and greatly improves the practicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the thermoforming device of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the blister mold, the fixing plate, the suction cup and the heater combination of the present invention; Figure 3 is a cross-sectional view of a workbench of the present invention; Figure 4 It is a cross-sectional view of the blister mold of the present invention; Figure 5 For the present invention Figure 4 A magnified image of the area A in FIG. Figure 6 It is a schematic diagram of the three-dimensional structure of the cutting assembly of the present invention; Figure 7 It is a heating state diagram of the heater of the present invention; Figure 8 is a cross-sectional view of a heater according to the present invention; Fig. 9A schematic diagram showing the connection between the suction tube of the present invention and an external air pump.

[0018] Parts names and serial numbers in the figure: 1- workbench, 2- conveyor belt, 3- blister mold, 3001- molding groove, 3002- suction hole, 3003- cutting groove, 101- first electric guide rail, 102- second electric guide rail, 103- electric telescopic block, 104- connecting plate, 105- first electric push rod, 106- fixing plate, 10601- first connector, 107- suction cup, 108- heater, 10801-second connecting head, 10802-blowing groove, 10803-heat dissipation hole, 10804-thermoplastic cavity, 109-second electric push rod, 201-clamping plate, 202-suction tube, 20201-branch pipe, 203-connecting ring, 204-electric telescopic tube, 205-suction head, 206-needle, 207-cutter, 208-fixing ring, 209-arc gasket, 210-electric heating plate. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0020] Example 1 A thermoforming device, such as Figure 1-Figure 7 and Fig. 9 As shown, it includes a workbench 1, a conveyor belt 2 and a blister mold 3; the conveyor belt 2 is arranged on the left side of the workbench 1; the blister mold 3 is connected to the workbench 1, and a cooling system is arranged on the workbench 1; the rear side of the workbench 1 is connected to an external feeding mechanism; It also includes a fixed plate 106, a suction cup 107, a heater 108, a second electric push rod 109, a clamping plate 201, an electric telescopic tube 204, a suction head 205, a blister assembly, a moving assembly and a cutting assembly; the moving assembly is connected to the workbench 1; the moving assembly is connected to the fixed plate 106, the fixed plate 106 is hollow, and two first connectors 10601 are fixedly connected to the fixed plate 106, each of which is connected to an external air pump; the moving assembly is also connected to the heater 108; a plurality of suction cups 107 are fixedly connected to the lower side of the fixed plate 106; each An electric telescopic tube 204 is slidably connected inside the suction cup 107; a suction head 205 is fixedly connected to the lower side of each electric telescopic tube 204, and each suction head 205 is connected to an external air pump through a first connector 10601; a cutting component is connected to each suction cup 107; a blister component is connected to the blister mold 3; four second electric push rods 109 are fixedly connected to the workbench 1; the output ends of all the second electric push rods 109 are commonly fixedly connected to a clamping plate 201; the blister mold 3 is located on the inner side of the clamping plate 201; the moving component is used to drive the fixed plate 106 and the heater 108 to move.

[0021] The blister assembly includes a suction tube 202 and a connecting ring 203; a plurality of molding grooves 3001 are provided on the blister mold 3; a suction tube 202 is connected inside the blister mold 3; a plurality of branch pipes 20201 are connected to the suction tube 202; the lower side of each molding groove 3001 is connected to two corresponding branch pipes 20201, and a solenoid valve is arranged in each branch pipe 20201; a plurality of suction holes 3002 in a circular array are provided on the outer side of the upper part of each molding groove 3001 on the blister mold 3; a plurality of connecting rings 203 are fixedly connected to the suction tube 202; each connecting ring 203 is connected to all the suction holes 3002 on the outer side of the upper part of the corresponding molding groove 3001, the suction tube 202 is connected to an external air pump, and the diameter of the suction tube 202 is greater than the diameter of the suction hole 3002.

[0022] The moving assembly includes a first electric guide rail 101, a second electric guide rail 102, an electric telescopic block 103, a connecting plate 104 and a first electric push rod 105; two front-to-back symmetrical first electric guide rails 101 are fixedly connected to the left side of the workbench 1; all the first electric guide rails 101 are slidably connected to the connecting plate 104 through a slider; four first electric push rods 105 are fixedly connected to the lower side of the connecting plate 104; the telescopic ends of all the first electric push rods 105 are fixedly connected to the fixed plate 106; two front-to-back symmetrical second electric guide rails 102 are fixedly connected to the right side of the workbench 1; each second electric guide rail 102 is slidably connected to two electric telescopic blocks 103 through a slider; the telescopic ends of all the electric telescopic blocks 103 are fixedly connected to the heater 108.

[0023] The cutting assembly includes a fixing ring 208 and a cutter 207; a fixing ring 208 is fixedly connected to the lower side of each suction cup 107; a cutter 207 is fixedly connected to the lower side of each fixing ring 208, and the cutter 207 is annular; a plurality of cutting grooves 3003 are opened on the upper side of each blister mold 3; each cutting groove 3003 is located at the corresponding suction hole 3002.

[0024] It also includes needles 206; each cutter 207 has a plurality of needles 206 in a circular array on the lower side; the number and position of the needles 206 fixed to the lower side of each cutter 207 are consistent with the number and position of the suction holes 3002 on the upper outer side of the corresponding forming groove 3001.

[0025] The maximum diameter of the needle 206 is smaller than the diameter of the suction hole 3002 .

[0026] like Fig. 9As shown, the connecting end of the external air pump and the suction pipe 202 is connected with an electrically controlled three-way valve, and the electrically controlled three-way valve is connected with a collecting box through two connecting pipes. The collecting box is divided into two parts by a partition, and the electrically controlled three-way valve is connected with the two parts of the space of the collecting box through two connecting pipes respectively, and the two parts of the space of the collecting box are connected with the suction pipe 202 through a connecting pipe, wherein a filter is arranged at a part of the space of the collecting box and the connecting pipe of the electrically controlled three-way valve, and the channel formed by the space of the collecting box with the filter and the connecting pipe connecting the electrically controlled three-way valve and the suction pipe 202 is an exhaust channel; the channel formed by the space of the collecting box without the filter and the connecting pipe connecting the electrically controlled three-way valve and the suction pipe 202 is an air blowing channel; thereby, the exhaust channel and the air blowing channel are separated, and when the external air pump sucks away impurities through the suction pipe 202, the impurities will enter the space of the collecting box with the filter through the connecting pipe for collection, so as to avoid the impurities being blown back into between the blister mold 3 and the plastic sheet during the subsequent blowing operation.

[0027] It also includes an arc-shaped gasket 209 ; the arc-shaped gasket 209 is fixedly connected to the upper side of the blister mold 3 .

[0028] The arc-shaped gasket 209 is made of high-temperature-resistant fluororubber material, which is beneficial to improving the service life of the arc-shaped gasket 209 .

[0029] First, Figure 1-Figure 3 Shown: Figure 1 The side where the conveyor belt 2 is marked is the left side, and the side where the workbench 1 is marked is the front side. It should be noted that the rear side of the workbench 1 is connected to the external feeding mechanism; in the working state, the plastic sheet is brought to the workbench 1 from the back to the front through the feeding mechanism. In this process, the clamping plate 201 is driven to rise upward by the second electric push rod 109 to avoid obstruction to the feeding of the plastic sheet. When the blister plastic sheet moves to the top of the blister mold 3, the clamping plate 201 is driven to descend by the second electric push rod 109 to clamp the plastic sheet; then the heater 108 is moved to the left to the top of the plastic sheet by the second electric guide rail 102, and then the heater 108 is driven to move downward by the electric telescopic block 103, so that the heater 108 is close to the plastic sheet, and then the plastic sheet is heated and softened by the heater 108, and then the softened plastic sheet is vacuum adsorbed by the suction pipe 202 arranged in the blister mold 3, thereby completing the adsorption and molding of the plastic sheet; like Figure 4 and Figure 5As shown: when the suction tube 202 is used for the blistering work, first the solenoid valve in the branch pipe 20201 is closed. At this time, the branch pipe 20201 does not generate suction, and the suction hole 3002 generates suction, and then the softened plastic sheet is adsorbed first to make the plastic sheet fit with the upper surface of the blister mold 3, and then the solenoid valve in the branch pipe 20201 is controlled to open. At this time, the branch pipe 20201 generates suction to suck the plastic sheet into the molding groove 3001 to complete the adsorption work; it should be noted here that due to the presence of the arc gasket 209, after the plastic sheet is clamped by the clamping plate 201, the plastic sheet is not completely in contact with the surface of the blister mold 3. At this time, there is a gap between the surface of the blister mold 3 and the plastic sheet. When the suction tube 202 is adsorbing, most of the dust, hair and other impurities between the surface of the blister mold 3 and the plastic sheet will be sucked away by the suction hole 3002. Therefore, when the branch pipe 20201 is blistering, not much dust and hair will enter the branch pipe 20201, which is conducive to reducing the probability of the branch pipe 20201 being blocked. At the same time, when the blister is being carried out, because the plastic sheet has been adsorbed by the suction hole 3002 in advance, even if part of the branch pipe 20201 is blocked and the suction force is insufficient, the plastic sheet will not be sucked into the molding groove 3001 with normal suction force, thereby avoiding the blockage of the branch pipe 20201 in part of the molding groove 3001, affecting the blister molding effect of the entire equipment; After the blister is completed, the cooling system sprays water mist to cool the formed plastic parts, and then the first electric guide rail 101 drives the connecting plate 104 to move to the top of the blister mold 3, and then controls the first electric push rod 105 to push downward, thereby pushing the fixing plate 106 and the suction cup 107 downward. Figure 6 As shown in the figure: when the suction cup 107 moves downward, the cutter 207 will contact the plastic part. As the suction cup 107 continues to move downward, the cutter 207 enters the cutting groove 3003 and then shears the molded plastic part. After the shearing of the molded plastic part is completed, the suction head 205 is driven downward by the electric telescopic tube 204. When the suction head 205 contacts the cooled and molded plastic part in the molding groove 3001, the external air pump is started to generate a suction force in the suction head 205, and the molded plastic part is sucked up by the suction head 205, thereby completing the shearing and demoulding of the molded plastic part at one time. Yes, there is no need to transport the plastic sheet to the shearing equipment for shearing after demolding, which reduces the process, improves production efficiency, reduces production costs, and greatly improves the practicability of the equipment; after the molded plastic parts are sucked upward by the suction head 205, the connecting plate 104 is driven to move to the left by the first electric guide rail 101, and then the fixed plate 106 and the suction cup 107 are driven to move to the left, and then the molded plastic parts are driven downward by the first electric push rod 105 and the electric telescopic tube 204 to be brought to the conveyor belt 2, and then the suction head 205 releases the adsorption of the plastic parts, and then the plastic parts are placed on the conveyor belt 2 and transferred to the subsequent steps.

[0030] However, after the plastic sheet is formed by vacuum forming, it will cling to the vacuum forming mold 3. Although the formed plastic part can be directly sheared and demolded by the cutter 207 and the suction head 205, the excess plastic sheet needs to be rolled up and recycled after shearing. In the existing equipment, the plastic sheet is demolded by blowing upward through the branch pipe 2201. However, after the formed plastic part is directly sheared and demolded by the cutter 207 and the suction head 205, the branch pipe 2201 cannot blow away the excess plastic sheet. At this time, the excess plastic sheet is difficult to demold and recycle, and the vacuum forming After the dust, hair and other impurities between the mold 3 and the plastic sheet are sucked out by the suction hole 3002, the suction hole 3002 will also be blocked, thereby affecting the subsequent early adsorption of the plastic sheet; therefore, when the cutter 207 moves downward, it will drive the needle 206 to move downward. During this process, the needle 206 will first contact the plastic part, pierce the plastic part, and insert into the corresponding suction hole 3002, and then the cutter 207 stops moving downward. At this time, the cutter 207 has not yet contacted the plastic part, and then air is blown into the suction tube 202 through an external air pump. At this time, due to the straightness of the needle 206 The diameter of the suction hole 3002 is smaller than that of the suction hole 3002, so the air flow will be blown upward from the branch pipe 20201 and the suction hole 3002, thereby blowing the plastic part upward as a whole, and then the external air pump stops blowing air into the suction pipe 202, and the plastic part falls downward as a whole. At this time, the plastic part as a whole is only supported on the blister mold 3, which is convenient for the subsequent winding and recycling of excess sheets; then the cutter 207 continues to move downward into the cutting groove 3003 to complete the shearing of the molded plastic part; and when the plastic part is blown upward as a whole and falls back, the needle 206 pierces the plastic sheet at the cutting groove 3003, Then, the plastic sheet in the area of ​​the molding groove 3001 is fixed to prevent the thinner plastic sheet from being offset when the branch pipe 20201 and the suction hole 3002 blow air upwards to perform demoulding, resulting in damage to the molded plastic sheet in the molding groove 3001 during cutting; and when the needle 206 is inserted into the corresponding suction hole 3002, the needle 206 will push impurities such as dust and hair attached to the suction hole 3002 downward into the connecting ring 203, thereby clearing the suction hole 3002; and then the impurities in the connecting ring 203 are extracted through the suction pipe 202.

[0031] Example 2 On the basis of Example 1, Figure 7 and Figure 8 As shown, it also includes an electric heating plate 210; a thermoplastic cavity 10804 is opened at the lower side of the heater 108; the electric heating plate 210 is fixedly connected to the upper side of the thermoplastic cavity 10804; two second connectors 10801 are fixedly connected to the heater 108, and each second connector 10801 is connected to an external air pump; an air blowing groove 10802 is opened in the heater 108, and the air blowing groove 10802 is connected to the second connector 10801.

[0032] A plurality of heat dissipation holes 10803 are provided on the upper side of the heater 108 .

[0033] In the process of heating and softening the plastic sheet by the heater 108, the edge area of ​​the plastic sheet is in direct contact with the outside world. Therefore, the heat of the edge area of ​​the plastic sheet is easily lost during the heating process, resulting in poor heating and softening effect at the edge. Figure 7 and Figure 8 As shown: after the heater 108 is brought to the top of the plastic sheet by the moving assembly, the electric telescopic block 103 drives the heater 108 to move downward, so that the heater 108 is in contact with the upper surface of the clamping plate 201, thereby forming a closed thermoplastic cavity 10804 between the plastic sheet, the clamping plate 201 and the heater 108; reducing the heat loss in the edge area of ​​the plastic sheet; and improving the heating and softening effect of the electric heating plate 210 on the plastic sheet; When vacuum forming is performed, high-pressure gas is blown into the blowing groove 10802 through an external air pump, and then the gas is blown into the thermoplastic cavity 10804, thereby forming a high-pressure state on the upper side of the plastic sheet; at the same time, the suction tube 202 performs vacuum suction, thereby forming a negative pressure state on the lower side of the plastic sheet, thereby allowing the plastic sheet to be quickly formed by vacuum forming, thereby improving the vacuum forming effect of the plastic sheet; and after heating is completed, heat can be quickly dissipated through the heat dissipation holes 10803 on the upper side of the heater 108, thereby increasing the service life of the equipment.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermoforming device, characterized in that: The invention comprises a workbench (1), a conveyor belt (2) and a blister mold (3); the workbench (1) is provided with a conveyor belt (2); the blister mold (3) is connected to the workbench (1); the invention also comprises a fixed plate (106), a suction cup (107), a heater (108), a clamping plate (201), an electric telescopic tube (204), a suction head (205), a blister assembly and a cutting assembly; the workbench (1) is connected to a fixed plate (106); the movable assembly is also connected to a heater (108) for heating a plastic sheet; a plurality of suction cups (107) are fixedly connected to the lower side of the fixed plate (106); each suction cup (107) is slidably connected to an electric telescopic tube (204); a suction head (205) is fixedly connected to the lower side of each electric telescopic tube (204); a cutting component for cutting and molding plastic parts is connected to each suction cup (107); a blister component for blister molding heated plastic sheets is connected to the blister mold (3); a plurality of second electric push rods (109) are fixedly connected to the workbench (1); the output ends of all the second electric push rods (109) are commonly fixedly connected to a clamping plate (201) for clamping and fixing the plastic sheets; the blister mold (3) is located on the inner side of the clamping plate (201).

2. A thermoforming device according to claim 1, characterized in that: The blister assembly comprises a suction tube (202) and a connecting ring (203); a plurality of molding grooves (3001) are provided on the blister mold (3); a suction tube (202) is connected inside the blister mold (3), and the suction tube (202) is connected to an external air pump; a plurality of branch tubes (20201) are connected to the suction tube (202); the lower side of each molding groove (3001) is connected to two corresponding branch tubes (20201); a plurality of suction holes (3002) in a ring array are provided on the outer side of the upper part of each molding groove (3001) on the blister mold (3); a plurality of connecting rings (203) are fixedly connected to the suction tube (202); each connecting ring (203) is connected to all the suction holes (3002) on the outer side of the upper part of the corresponding molding groove (3001).

3. A thermoforming device according to claim 2, characterized in that: The cutting assembly comprises a fixing ring (208) and a cutting knife (207); the fixing ring (208) is fixedly connected to the lower side of each suction cup (107); the cutting knife (207) is fixedly connected to the lower side of each fixing ring (208); a plurality of cutting grooves (3003) are provided on the upper side of each blister mold (3); and each cutting groove (3003) is located at a corresponding suction hole (3002).

4. A thermoforming device according to claim 3, characterized in that: It also includes needles (206); each cutter (207) has a plurality of needles (206) in a circular array on the lower side; the number and position of the needles (206) fixed to the lower side of each cutter (207) are consistent with the number and position of the suction holes (3002) on the upper outer side of the corresponding molding groove (3001).

5. The thermoforming device according to claim 4, characterized in that: The maximum diameter of needle (206) is smaller than the diameter of aspiration hole (3002).

6. The thermoforming device according to claim 2, characterized in that: The connecting end of the external air pump and the suction pipe (202) is connected to an electrically controlled three-way valve, and the electrically controlled three-way valve is connected to a collection box through two connecting pipes. The collection box is divided into two parts by a partition. The electrically controlled three-way valve is respectively connected to the two parts of the space of the collection box through two connecting pipes. The two parts of the space of the collection box are connected to the suction pipe (202) through the connecting pipe, wherein a filter is provided at the connection pipe between a part of the space of the collection box and the electrically controlled three-way valve. The channel formed by the connecting pipe connecting the space of the collection box with the filter and the electrically controlled three-way valve and the suction pipe (202) is the suction channel; the channel formed by the connecting pipe connecting the space of the collection box without the filter and the electrically controlled three-way valve and the suction pipe (202) is the blowing channel.

7. The thermoforming device according to claim 2, characterized in that: It also includes an arc-shaped gasket (209); the arc-shaped gasket (209) is fixedly connected to the upper side of the blister mold (3).

8. The thermoforming device according to claim 7, characterized in that: The arc-shaped gasket (209) is made of high-temperature resistant fluororubber.

9. The thermoforming device according to claim 1, characterized in that: It also includes an electric heating plate (210); a thermoplastic cavity (10804) is provided on the lower side of the heater (108); the electric heating plate (210) is fixedly connected to the upper side of the thermoplastic cavity (10804); and an air blowing groove (10802) is provided in the heater (108).

10. The thermoforming device according to claim 9, characterized in that: A plurality of heat dissipation holes (10803) are provided on the upper side of the heater (108).

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