A flow rate adjustment device for plastic blister mould

Abstract

This application discloses a flow rate adjustment device for a vacuum forming mold, comprising a preform vacuum forming mold body (1), wherein a plurality of hollow tubular main mandrels (2) are arranged inside the preform vacuum forming mold body (1), the main mandrels (2) are arranged in parallel, the main mandrels (2) are slidably connected to the preform vacuum forming mold body (1), a vacuum forming tube (3) is arranged inside the main mandrel (2), the vacuum forming tube (3) is sleeved inside the main mandrel (2) and coaxially arranged with the main mandrel (2); the lower end of the main mandrel (2) protrudes from the lower end face of the preform vacuum forming mold body (1), and a hollow forming die (4) is fixedly connected to the lower end of the preform vacuum forming mold body (1), the lower end of the main mandrel (2) is sleeved inside the forming die (4), and a gap is provided between the lower outer surface of the main mandrel (2) and the inner surface of the forming die (4) to form a lower flow channel. The advantage of this invention is that it overcomes the drawbacks of the prior art and has a reasonable and novel structural design.

Description

Technical Field

[0001] The invention relates to a flow rate regulating device for a blister mould and belongs to the field of blister moulds. Background Art

[0002] Blistering, also known as hollow blistering, is a rapidly developing plastic processing method. During World War II, the blistering process began to be used to produce low-density polyethylene bottles. In the late 1950s, with the birth of high-density polyethylene and the development of blister forming machines, blister technology has been widely used. The volume of hollow containers can reach thousands of liters, and some production has been computer-controlled. Plastics suitable for blistering include polyethylene, polyvinyl chloride, polypropylene, polyester, etc., and the resulting hollow containers are widely used as industrial packaging containers. According to the parison production method, blistering can be divided into extrusion blistering and injection blistering, and newly developed ones include multi-layer blistering and stretch blistering. In the prior art, a blister forming cavity formed by the cooperation of multiple main core shafts and forming mouth dies is generally set in the tube embryo blister mold to improve production efficiency. However, when adjusting the equipment to meet the production requirements of tube blanks with different wall thicknesses, it is necessary to adjust the single main core shaft and the forming die. Moreover, when the main core shaft and the forming die need to be adjusted during the production cycle to adjust the wall thickness of the tube blank, it is also necessary to adjust the single main core shaft and the forming die. The adjustment is inconvenient and affects the processing efficiency. Summary of the invention

[0003] The technical solution of the present invention is aimed at the shortcomings of the prior art: "However, when adjusting the equipment to adapt to the production requirements of tube blanks with different wall thicknesses, it is necessary to adjust the single main core shaft and the molding die, and when the main core shaft and the molding die need to be adjusted during the production cycle to adjust the wall thickness of the tube blank, the single main core shaft and the molding die also need to be adjusted, which is inconvenient to adjust and affects the processing efficiency." A flow rate adjustment device for a suction mold is provided.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is a blister mold flow rate adjustment device, comprising a tube embryo blister mold main body, a plurality of hollow tubular main core shafts are arranged in the tube embryo blister mold main body, the main core shafts are arranged in parallel, the main core shafts are slidably connected to the tube embryo blister mold main body, a blister tube is arranged in the main core shaft, the blister tube is sleeved in the main core shaft and is coaxially arranged with the main core shaft; the lower end of the main core shaft protrudes from the lower end surface of the tube embryo blister mold main body, the lower end of the tube embryo blister mold main body is fixedly connected with an internal hollow molding die, the lower end of the main core shaft is sleeved in the molding die, and a spacing is arranged between the outer surface of the lower section of the main core shaft and the inner surface of the molding die to form a lower The upper end of the main core shaft protrudes from the upper surface of the tube embryo blister mold body, and the upper end of the tube embryo blister mold body is provided with two parallel sliding push plates; the sliding push plate is a strip plate and is arranged parallel to the length extension direction of the main core shaft, and the sliding push plate slides on the tube embryo blister mold body along the length extension direction of the sliding push plate, and the main core shaft is located between the two sliding push plates, and the ends of the two sliding push plates are connected with a driving power device, and a main core shaft driving member is arranged between the upper end of the main core shaft and the sliding push plate; when the driving power device drives the sliding push plate to slide, the main core shaft driving member drives the main core shaft to slide relative to the tube embryo blister mold body along the length extension direction of the main core shaft.

[0005] In the technical solution of the present application, the main mandrel is slidably arranged in the main body of the tube embryo blister mold. When the driving power device drives the sliding push plate to slide, the main mandrel pusher moves with the sliding push plate and causes the main mandrel to move. The movement of the main mandrel changes the gap between the lower end of the main mandrel and the molding die, so that when the sliding push plate moves, all the main mandrels can be pushed up and down at the same time, which is convenient for synchronous adjustment of all the main mandrels. Two sliding push plates are respectively arranged on both sides of the main mandrel and keep synchronous movement to prevent the main mandrel from moving unevenly on both sides when moving and causing deviation.

[0006] Optimized, the above-mentioned blister mold flow rate adjustment device has two connecting blocks arranged between the two sliding push plates, and the two connecting blocks are respectively fixedly connected to the ends of the sliding push plates; the pushing power device includes a pushing cylinder, the end of the piston rod of the pushing cylinder is fixedly connected to one of the connecting blocks, and the pushing direction of the piston rod of the pushing cylinder is parallel to the length extension direction of the sliding push plates; the piston of the pushing cylinder is fixed to the main body of the tube embryo blister mold.

[0007] In the present application, two connecting blocks are used to support and fix the ends of the two sliding push plates, so that the two sliding push plates are connected into an integral frame, so that the two sliding push plates can maintain the same amount of movement when moving, thereby keeping the force on both sides uniform when the main spindle is raised or lowered. The push cylinder is used as a pushing power device, which can push a smaller displacement and facilitate fine adjustment.

[0008] Optimized, the above-mentioned blister mold flow rate adjustment device, an adjustment plate is arranged above the main body of the tube embryo blister mold, the end of the main core shaft passes through the adjustment plate and is fixedly connected to the adjustment plate; the main core shaft pushing member includes a plurality of pushing bearings, and the pushing bearings are rotatably connected to the side of the adjustment plate through a rotating shaft; the sliding push plate is provided with an inclined slide rail arranged in cooperation with the pushing bearing, the length extension direction of the inclined slide rail is arranged at an acute angle with the length extension direction of the main core shaft, and the pushing bearing is arranged in the inclined slide rail and is in rolling contact with the inner surface of the inclined slide rail.

[0009] In the present application, the adjustment plate fixedly connects the ends of all the main spindles, so that the main spindles maintain a synchronous adjustment range when moving, ensuring the consistency of the adjustment range. When the sliding push plate is pushed, the push bearings on both sides of the adjustment plate roll in the inclined slide rails on the sliding push plate. Since the length extension direction of the inclined slide rail is set at an acute angle to the length extension direction of the main spindle, when the sliding push plate moves, the push bearings remain fixed in the horizontal direction and rise and fall with the inclined slide rail in the vertical direction, thereby allowing the adjustment plate to drive the main spindle to rise and fall, and can keep the adjustment range of each main spindle consistent.

[0010] Optimized, the above-mentioned blister mold flow rate adjustment device, two parallel guide plates are fixedly provided on the upper end of the tube embryo blister mold body, two sliding push plates are located between the two guide plates and slide with the guide plates, and the guide plates are fixedly connected to the upper end of the tube embryo blister mold body.

[0011] In the present application, the moving direction of the sliding push plate is limited by the guide plate to prevent the sliding push plate from being offset during movement, thereby ensuring the moving accuracy of the sliding push plate and the adjustment accuracy of the main spindle.

[0012] Optimized, the above-mentioned blister mold flow rate adjustment device has a guide column fixedly arranged on the upper end of the tube embryo blister mold body, the guide column is arranged parallel to the length extension direction of the main core axis, and the end of the guide column passes through the adjustment plate; the adjustment plate is provided with a guide sleeve arranged to cooperate with the guide column, and the guide sleeve and the guide column are slidably matched.

[0013] In the present application, the sliding fit of the guide column and the guide sleeve allows the adjustment plate to maintain the length extension direction along the main core shaft when moving, thereby improving the movement accuracy of the adjustment plate when driving the main core shaft to move, thereby ensuring the adjustment accuracy of the main core shaft.

[0014] Optimized, the above-mentioned blister mold flow rate adjustment device, the end of the main core shaft passes through the adjustment plate and is threadedly connected with an adjustment nut, a pressure block is sleeved on the adjustment nut, and the pressure block is fixed to the adjustment plate by bolts; an annular fixing ring is arranged on the outer ring surface of the adjusting nut, and a groove is arranged in the pressure block to cooperate with the fixing ring.

[0015] In the present application, a single main spindle can be moved by rotating the adjusting nut, and the single main spindle can be fine-tuned. The adjusting nut is fixed to the adjustment plate by a pressure block, so that the positions of the main spindle and the adjusting nut are fixed.

[0016] Optimized, the above-mentioned suction mold flow rate adjustment device, the lower end of the main core shaft is conical, the inner surface of the molding die is conical and is arranged in coordination with the lower end outer surface of the main core shaft, the lower end outer surface of the main core shaft and the inner surface of the molding die are spaced apart to form a molding flow channel.

[0017] In the present application, the lower end of the main mandrel and the inner surface of the forming die are both conical, and the thickness of the finished tube blank can be conveniently adjusted through the axial movement of the main mandrel.

[0018] Optimized, the above-mentioned blister mold flow rate adjustment device has an annular sealing ring sleeved on the middle section of the main core shaft, the annular inner surface of the sealing ring and the outer surface of the main core shaft are spaced apart to form an annular extrusion cavity, a feed port is provided on the side of the tube embryo blister mold body, and the extrusion cavity is connected to the feed port; an annular extrusion protrusion is provided on the annular inner surface of the sealing ring, and an annular protrusion is provided on the outer surface of the main core shaft, the annular protrusion is located below the extrusion protrusion, and the distance between the inner ring surface of the extrusion protrusion and the surface of the main core shaft is less than the protrusion height of the annular protrusion.

[0019] When the gap between the lower end of the main mandrel and the forming die increases, the flow channel area increases, so that the flow rate of the material flow increases, and the impact force of the material flow on the main mandrel and the forming die increases, making the main mandrel and the forming die easily damaged. In the present application, when the main mandrel moves so that the gap between the lower end of the main mandrel and the forming die increases, the annular protrusion and the extrusion protrusion move relative to each other, so that the relative distance between the annular protrusion and the extrusion protrusion decreases, and the material flow area decreases, so that the material flow is buffered, reducing the impact force of the material flow on the main mandrel and the forming die.

[0020] Optimized, the above-mentioned blister mold flow rate adjustment device has a plurality of annular protrusions 2 arranged on the outer surface of the lower section of the main core shaft, the annular protrusions 2 are located below the annular protrusions and spaced apart from the annular protrusions; the annular outer ring surface of the annular protrusions 2 is spaced apart from the inner wall of the tube embryo blister mold body.

[0021] The annular protrusion 2 in the present application serves the purpose of reducing the flow rate of the material flow, further reducing the impact force of the material flow on the main core shaft and the forming die. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of point A. DETAILED DESCRIPTION

[0025] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] As shown in the figure, the present invention is a blister mold flow rate adjustment device, comprising a tube embryo blister mold body 1, a plurality of hollow tubular main core shafts 2 are arranged in the tube embryo blister mold body 1, the main core shafts 2 are arranged in parallel, the main core shafts 2 are slidably connected to the tube embryo blister mold body 1, a blister tube 3 is arranged in the main core shaft 2, the blister tube 3 is sleeved in the main core shaft 2 and is coaxially arranged with the main core shaft 2; the lower end of the main core shaft 2 protrudes from the lower end surface of the tube embryo blister mold body 1, the lower end of the tube embryo blister mold body 1 is fixedly connected with an internal hollow molding die 4, the lower end of the main core shaft 2 is sleeved in the molding die 4, and a spacing is arranged between the outer surface of the lower section of the main core shaft 2 and the inner surface of the molding die 4 to form a lower flow channel; the The upper end of the main core shaft 2 protrudes from the upper surface of the tube embryo blister mold body 1, and two parallel sliding push plates 5 are arranged at the upper end of the tube embryo blister mold body 1; the sliding push plates 5 are strip plates and are arranged parallel to the length extension direction of the main core shaft 2, and the sliding push plates 5 slide on the tube embryo blister mold body 1 along the length extension direction of the sliding push plates 5, and the main core shaft 2 is located between the two sliding push plates 5, and the ends of the two sliding push plates 5 are connected with a driving power device, and a main core shaft driving member is arranged between the upper end of the main core shaft 2 and the sliding push plate 5; when the driving power device drives the sliding push plate 5 to slide, the main core shaft driving member drives the main core shaft 2 to slide relative to the tube embryo blister mold body 1 along the length extension direction of the main core shaft 2.

[0027] In the technical solution of the present application, the main mandrel 2 is slidably arranged in the main body 1 of the tube embryo blister mold. When the driving power device drives the sliding push plate 5 to slide, the main mandrel pusher moves with the sliding push plate 5 and moves the main mandrel 2. The movement of the main mandrel 2 changes the gap between the lower end of the main mandrel 2 and the molding die 4, so that the sliding push plate 5 can push all the main mandrels 2 to rise and fall at the same time when moving, which is convenient for synchronous adjustment of all the main mandrels 2. Two sliding push plates 5 are respectively arranged on both sides of the main mandrel 2 and keep synchronous movement to prevent the main mandrel 2 from shifting due to uneven moving distances on both sides when moving.

[0028] Two connecting blocks 6 are arranged between the two sliding push plates 5, and the two connecting blocks 6 are respectively fixedly connected to the ends of the sliding push plates 5; the pushing power device includes a pushing cylinder 7, and the end of the piston rod of the pushing cylinder 7 is fixedly connected to one of the connecting blocks 6, and the pushing direction of the piston rod of the pushing cylinder 7 is parallel to the length extension direction of the sliding push plates 5; the piston of the pushing cylinder 7 is fixed to the main body 1 of the tube embryo blister mold.

[0029] In the present application, two connecting blocks 6 are used to support and fix the ends of the two sliding push plates 5, so that the two sliding push plates 5 are connected to form an integral frame, so that the two sliding push plates 5 can maintain the same amount of movement when moving, thereby making the forces on both sides of the main spindle 2 uniform when it is raised or lowered. The pushing cylinder 7 is used as a pushing power device, which can push a smaller displacement and facilitate fine adjustment.

[0030] An adjustment plate 8 is arranged above the main body 1 of the tube embryo blister mold, and the end of the main core shaft 2 passes through the adjustment plate 8 and is fixedly connected to the adjustment plate 8; the main core shaft pusher includes a plurality of push bearings 9, and the push bearings 9 are rotatably connected to the side of the adjustment plate 8 through a rotating shaft; the sliding push plate 5 is provided with an inclined slide rail 10 which is matched with the push bearing 9, and the length extension direction of the inclined slide rail 10 is arranged at an acute angle with the length extension direction of the main core shaft 2, and the push bearing 9 is arranged in the inclined slide rail 10 and is in rolling contact with the inner surface of the inclined slide rail 10.

[0031] In the present application, the adjustment plate 8 is used to fix the ends of all the main spindles 2, so that the main spindles 2 maintain a synchronous adjustment range when moving, ensuring the consistency of the adjustment range. When the sliding push plate 5 is pushed, the push bearings 9 on both sides of the adjustment plate 8 roll in the inclined slide rails 10 on the sliding push plate 5. Since the length extension direction of the inclined slide rails 10 is set at an acute angle to the length extension direction of the main spindles 2, when the sliding push plate 5 moves, the push bearings 9 remain fixed in the horizontal direction and rise and fall with the inclined slide rails 10 in the vertical direction, thereby allowing the adjustment plate 8 to drive the main spindles 2 to rise and fall, and can keep the adjustment ranges of each main spindle 2 consistent.

[0032] Two parallel guide plates 11 are fixedly arranged on the upper end of the tube embryo blister mold body 1 , and two sliding push plates 5 are located between the two guide plates 11 and slidably cooperate with the guide plates 11 . The guide plates 11 are fixedly connected to the upper end of the tube embryo blister mold body 1 .

[0033] In the present application, the guide plate 11 is used to limit the moving direction of the sliding push plate 5 to prevent the sliding push plate 5 from being offset during movement, thereby ensuring the moving accuracy of the sliding push plate 5 and further ensuring the adjustment accuracy of the main spindle 2.

[0034] A guide post 12 is fixedly arranged at the upper end of the tube embryo blister mold body 1. The guide post 12 is arranged parallel to the length extension direction of the main core shaft 2. The end of the guide post 12 passes through the adjustment plate 8. The adjustment plate 8 is provided with a guide sleeve that is arranged to cooperate with the guide post 12. The guide sleeve and the guide post 12 are slidably matched.

[0035] In the present application, the sliding fit between the guide column 12 and the guide sleeve allows the adjustment plate 8 to maintain the length extension direction along the main shaft 2 when moving, thereby improving the movement accuracy of the adjustment plate 8 when driving the main shaft 2 to move, thereby ensuring the adjustment accuracy of the main shaft 2.

[0036] The end of the main core shaft 2 passes through the adjustment plate 8 and is threadedly connected with an adjustment nut 14, on which a pressure block 15 is sleeved, and the pressure block 15 is fixed to the adjustment plate 8 by bolts; an annular fixing ring 16 is arranged on the outer ring surface of the adjustment nut 14, and a groove cooperating with the fixing ring 16 is arranged in the pressure block 15.

[0037] In the present application, a single main shaft 2 can be moved by rotating the adjusting nut 14, and the single main shaft 2 can be fine-tuned. The adjusting nut 14 is fixed to the adjustment plate 8 by the pressing block 15, so that the positions of the main shaft 2 and the adjusting nut 14 are fixed.

[0038] The lower end of the main core shaft 2 is conical, the inner surface of the forming die 4 is conical and is matched with the lower end outer surface of the main core shaft 2, and the lower end outer surface of the main core shaft 2 and the inner surface of the forming die 4 are spaced apart to form a forming flow channel.

[0039] In the present application, the lower end of the main core shaft 2 and the inner surface of the forming die 4 are both conical, and the thickness of the finished tube blank can be conveniently adjusted by axial movement of the main core shaft 2.

[0040] An annular sealing ring 17 is sleeved on the middle section of the main core shaft 2, and an annular inner surface of the sealing ring 17 is spaced from the outer surface of the main core shaft 2 to form an annular extrusion cavity. A feed port is provided on the side of the tube embryo blister mold body 1, and the extrusion cavity is connected to the feed port; an annular extrusion protrusion 18 is provided on the annular inner surface of the sealing ring 17, and an annular protrusion 19 is provided on the outer surface of the main core shaft 2. The annular protrusion 19 is located below the extrusion protrusion 18, and the distance between the inner ring surface of the extrusion protrusion 18 and the surface of the main core shaft 2 is less than the protrusion height of the annular protrusion 19.

[0041] When the gap between the lower end of the main mandrel 2 and the forming die 4 increases, the flow channel area of ​​the material flow increases, so that the flow rate of the material flow increases, and the impact force of the material flow on the main mandrel 2 and the forming die 4 increases, making the main mandrel 2 and the forming die 4 easily damaged. In the present application, when the main mandrel 2 moves so that the gap between the lower end of the main mandrel 2 and the forming die 4 increases, the annular protrusion 19 and the extrusion protrusion 18 move relative to each other, so that the relative distance between the annular protrusion 19 and the extrusion protrusion 18 decreases, and the material flow area decreases, so that the material flow is buffered, reducing the impact force of the material flow on the main mandrel 2 and the forming die 4.

[0042] A plurality of annular protrusions 20 are arranged on the outer surface of the lower section of the main core shaft 2. The annular protrusions 20 are located below the annular protrusions 19 and are spaced apart from the annular protrusions 19. The annular outer ring surface of the annular protrusions 20 is spaced apart from the inner wall of the tube embryo blister mold body 1.

[0043] The annular protrusion 20 in the present application serves to reduce the flow rate of the material flow, further reducing the impact force of the material flow on the main core shaft 2 and the forming die 4.

[0044] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A blister mold flow rate adjustment device, characterized in that: The invention comprises a tube embryo blister mold body (1), wherein a plurality of hollow tubular main core shafts (2) are arranged in the tube embryo blister mold body (1), the main core shafts (2) are arranged in parallel, the main core shafts (2) are slidably connected to the tube embryo blister mold body (1), a blister tube (3) is arranged in the main core shaft (2), the blister tube (3) is sleeved in the main core shaft (2) and is coaxially arranged with the main core shaft (2); the lower end of the main core shaft (2) protrudes from the lower end surface of the tube embryo blister mold body (1), the lower end of the tube embryo blister mold body (1) is fixedly connected with an internal hollow molding die (4), the lower end of the main core shaft (2) is sleeved in the molding die (4), and a spacing is arranged between the lower section outer surface of the main core shaft (2) and the inner surface of the molding die (4) to form a lower flow channel; the upper end of the main core shaft (2) The end portion protrudes from the upper surface of the tube embryo blister mold body (1), and the upper end of the tube embryo blister mold body (1) is provided with two parallel sliding push plates (5); the sliding push plates (5) are strip-shaped plates and are arranged parallel to the length extension direction of the main core shaft (2); the sliding push plates (5) slide on the tube embryo blister mold body (1) along the length extension direction of the sliding push plates (5); the main core shaft (2) is located between the two sliding push plates (5), and the ends of the two sliding push plates (5) are connected with a driving power device, and a main core shaft driving member is arranged between the upper end of the main core shaft (2) and the sliding push plates (5); when the driving power device drives the sliding push plates (5) to slide, the main core shaft driving member drives the main core shaft (2) to slide relative to the tube embryo blister mold body (1) along the length extension direction of the main core shaft (2); An adjustment plate (8) is arranged above the tube embryo blister mold body (1), and the end of the main core shaft (2) passes through the adjustment plate (8) and is fixedly connected to the adjustment plate (8); the main core shaft pusher includes a plurality of push bearings (9), and the push bearings (9) are rotatably connected to the side of the adjustment plate (8) through a rotating shaft; the sliding push plate (5) is provided with an inclined slide rail (10) arranged in cooperation with the push bearing (9), and the length extension direction of the inclined slide rail (10) is arranged at an acute angle with the length extension direction of the main core shaft (2), and the push bearing (9) is arranged in the inclined slide rail (10) and is in rolling contact with the inner surface of the inclined slide rail (10).

2. The blister mold flow rate adjustment device according to claim 1, characterized in that: Two connecting blocks (6) are arranged between the two sliding push plates (5), and the two connecting blocks (6) are respectively fixedly connected to the ends of the sliding push plates (5); the pushing power device comprises a pushing cylinder (7), the end of the piston rod of the pushing cylinder (7) is fixedly connected to one of the connecting blocks (6), and the pushing direction of the piston rod of the pushing cylinder (7) is parallel to the length extension direction of the sliding push plates (5); the piston of the pushing cylinder (7) is fixed to the main body (1) of the tube embryo blister mold.

3. The blister mold flow rate adjustment device according to claim 1, characterized in that: The upper end of the tube embryo plastic blister mold body (1) is fixedly provided with two parallel guide rail plates (11), two sliding push plates (5) are located between the two guide rail plates (11) and are slidably matched with the guide rail plates (11), and the guide rail plates (11) are fixedly connected to the upper end of the tube embryo plastic blister mold body (1).

4. The blister mold flow rate adjustment device according to claim 1, characterized in that: A guide post (12) is fixedly arranged at the upper end of the tube embryo blister mold body (1), and the guide post (12) is arranged parallel to the length extension direction of the main core shaft (2), and the end of the guide post (12) passes through the adjustment plate (8); the adjustment plate (8) is provided with a guide sleeve that is arranged to cooperate with the guide post (12), and the guide sleeve and the guide post (12) are slidably matched.

5. The blister mold flow rate adjustment device according to claim 1, characterized in that: The end of the main spindle (2) passes through the adjustment plate (8) and is threadedly connected to an adjustment nut (14), a pressure block (15) is sleeved on the adjustment nut (14), and the pressure block (15) is fixed to the adjustment plate (8) by bolts; an annular fixing ring (16) is arranged on the outer ring surface of the adjustment nut (14), and a groove is arranged in the pressure block (15) to cooperate with the fixing ring (16).

6. The blister mold flow rate adjustment device according to claim 1, characterized in that: The lower end of the main core shaft (2) is conical, the inner surface of the molding die (4) is conical and is arranged in coordination with the lower end outer surface of the main core shaft (2), and the lower end outer surface of the main core shaft (2) and the inner surface of the molding die (4) are arranged at intervals to form a molding flow channel.

7. The blister mold flow rate adjustment device according to claim 1, characterized in that: The middle section of the main core shaft (2) is sleeved with an annular sealing ring (17), and an annular extrusion cavity is formed between the annular inner surface of the sealing ring (17) and the outer surface of the main core shaft (2). A feed port is provided on the side of the tube embryo vacuum molding mold body (1), and the extrusion cavity is connected with the feed port; an annular extrusion protrusion (18) is provided on the annular inner surface of the sealing ring (17), and an annular protrusion (19) is provided on the outer surface of the main core shaft (2). The annular protrusion (19) is located below the extrusion protrusion (18), and the distance between the inner ring surface of the extrusion protrusion (18) and the surface of the main core shaft (2) is less than the protrusion height of the annular protrusion (19).

8. The blister mold flow rate adjustment device according to claim 7, characterized in that: A plurality of annular protrusions (20) are arranged on the outer surface of the lower section of the main core shaft (2), and the annular protrusions (20) are located below the annular protrusions (19) and are spaced apart from the annular protrusions (19); the annular outer ring surface of the annular protrusions (20) is spaced apart from the inner wall of the tube embryo plastic blister mold body (1).

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