Plastic uptake device of plastic uptake sealing machine

Abstract

The utility model relates to a plastic uptake device of a plastic uptake sealing machine, which comprises a plastic film traction device (20), a heating device (1), a plastic uptake forming device (2) and a supporting device (3), the plastic film traction device (20) drags a plastic film (19) to be heated into the heating device (1), the upper surface and the lower surface of the plastic film (19) are heated by the heating device (1) and then are fed into the plastic uptake forming device (2), and the supporting device (3) is used for supporting the plastic uptake forming device (2). The soft blister box capable of containing and wrapping the medical instruments is formed; and the supporting device (3) is used for positioning and pressing the plastic film (19) subjected to plastic suction molding. The vacuum forming device can perform contact type heating on the upper and lower surfaces of the plastic film, the plastic film is pressed and positioned by using the air cylinder, and the vacuum forming is more stable by using a negative pressure suction mode formed by upper and lower mold pressing and air suction.

Description

Technical Field

[0001] The utility model relates to a sealing and packaging technology for medical equipment, in particular to a blister device of a blister sealing machine. Background Art

[0002] Medical devices generally need to be packaged after they are produced, especially some small-sized devices that need to be sterilized and packaged before being delivered to the end user. Plastic sealing is a common packaging method. Its common operation process is to first blister the plastic film into a soft blister box with a concave shape in the middle, which is suitable for placing the medical device to be packaged; then place the medical device to be packaged and sealed in the concave shape; then cover the soft blister box with a cover material; finally, fuse the cover material and the soft blister box together. In this way, the medical device to be packaged is sealed in the cover material and the blister box, thereby completing the packaging of the medical device.

[0003] During the blister forming process, it is a common problem that the soft blister box is deformed due to uneven heating of the plastic film and unstable positioning after blister forming; at the same time, the blister box often does not reach the desired size after blister forming.

[0004] Based on this, the present utility model is specially proposed. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model provides a blister device of a blister sealing machine, which can perform contact heating on the upper and lower surfaces of the plastic film, use a cylinder to press and position the plastic film, and use a suction and pressure mode of pressing and sucking the upper and lower molds to form a negative pressure, so that the blister molding is more stable.

[0006] The technical solution of the utility model is: a blister device of a blister sealing machine, including a plastic film traction device, a heating device, a blister forming device and a supporting device, wherein the plastic film traction device pulls the plastic film to be heated into the heating device, and the upper and lower surfaces of the plastic film are heated by the heating device and then sent into the blister forming device to form a soft blister box that can accommodate and wrap the medical device; the supporting device is used to position and press the plastic film after blister forming. After being processed by the blister device, an opening is left on the upper part of the soft blister box, and the opening will be placed with the medical device in the next process and covered by the cover material, and pressed by the sealing pressing device, thereby completing the packaging of the medical device.

[0007] Furthermore, the heating device includes a square frame, a heating upper cylinder, a heating lower cylinder, a heating bakelite board and a heating plate. The heating upper cylinder and the heating lower cylinder are respectively arranged on the upper beam and the lower beam of the square frame. The end of the cylinder rod of each cylinder is connected to a heating plate, and each heating plate is connected to a heating bakelite board. The two heating bakelite boards arranged opposite to each other can heat the upper and lower surfaces of the plastic film sandwiched therebetween. Bidirectional heating of the upper and lower surfaces of the plastic film can avoid the problem of uneven heating of the plastic film.

[0008] Furthermore, a heating support shaft for lifting the plastic film to smoothly enter between the two heating plates is arranged on the square frame, and two heating limit rings for limiting the left and right positions of the plastic film are arranged at both ends of the heating support shaft.

[0009] Furthermore, the blister forming device includes a square frame bracket, an upper forming cylinder, a pressure plate, an upper blister mold, a lower blister mold, a support plate and a lower forming cylinder, and the upper forming cylinder and the lower forming cylinder are respectively arranged on the upper beam and the lower beam of the square frame bracket; the end of the cylinder rod of the upper forming cylinder is connected to the pressure plate, and the pressure plate is connected to the upper blister mold; the end of the cylinder rod of the lower forming cylinder is connected to the support plate, and the support plate is connected to the lower blister mold; when the upper blister mold and the lower blister mold are closed, the plastic film can be formed into a soft blister box with an opening.

[0010] Furthermore, the blister upper mold comprises an upper mold body, on which a convex mold and an upper mold sealing surface are arranged, and on the upper mold sealing surface an upper mold fixing hole is arranged for fixing the blister upper mold to the lower surface of the pressing plate by bolts.

[0011] Furthermore, the blister lower mold includes a lower mold body, a concave mold and a lower mold sealing surface are arranged on the lower mold body, a vent hole is arranged on the side of the lower mold body, and the vent hole is connected to the small diameter exhaust hole arranged inside the concave mold; and a lower mold fixing hole is arranged on the lower mold body, which is used to fix the blister lower mold to the upper surface of the support plate by bolts. Using the upper and lower molds to press together and suck air to form a negative pressure can make the blister molding stable.

[0012] Furthermore, the plastic film traction device includes a plastic film roller, a motor roller, a plastic film support shaft and a traction motor, the plastic film roller is arranged parallel to the motor roller, and the gap between them is used to squeeze the plastic film through; the motor roller is driven by the traction motor, and the plastic film support shaft is arranged under the bracket of the plastic film traction device for supporting the plastic film.

[0013] Furthermore, a mounting plate is provided on the plastic film pulling device, and the plastic film pulling device is mounted on the frame of the blister sealing machine by using bolts through a plurality of holes on the mounting plate.

[0014] Furthermore, the supporting device includes a supporting seat and a supporting beam. Two parallel supporting seats and two parallel supporting beams together form a square space that can accommodate a plastic film. A moving pair is formed between the supporting seat and the supporting beams through a slide rail and a slide groove. A telescopic rod parallel to the supporting seat is arranged between the two supporting beams, and a crank is installed at one end of the telescopic rod for driving the two supporting beams to move closer to or away from each other on the supporting seat.

[0015] Furthermore, small cylinders are provided on the two ends of the two support beams respectively, for pressing and fixing the plastic film. The small cylinders are used to press and position the plastic film, so that the packaging shape after blister forming is more stable.

[0016] The beneficial effects of the utility model are as follows.

[0017] 1. The upper and lower surfaces of the plastic film are heated in contact, making the heating more uniform, less affected by the environment, and the process stable.

[0018] 2. During blister forming, the plastic film is deformed by pressure and vacuum, making the blister box more stable and less deformed after forming.

[0019] 3. Use multiple sets of air cylinders to press and position the plastic film, so that the plastic film is completely fixed to prevent the blister film from shrinking and deforming. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a structural schematic diagram of a blister sealing machine involved in an embodiment of a blister device of a blister sealing machine.

[0021] Figure 2 The utility model is a schematic diagram of the heating device structure of an embodiment of a blister device of a blister sealing machine.

[0022] Figure 3 The utility model is a structural schematic diagram of a blister forming device of an embodiment of a blister device of a blister sealing machine.

[0023] Figure 4 yes Figure 3 Schematic diagram of the blister upper mold structure shown.

[0024] Figure 5 yes Figure 3 Schematic diagram of the blister lower mold structure shown.

[0025] Figure 6 The utility model is a schematic structural diagram of a film pulling device of an embodiment of a blister device of a blister sealing machine.

[0026] Figure 7 The utility model is a structural schematic diagram of a supporting device of an embodiment of a blister device of a blister sealing machine.

[0027] Figure 8 The utility model is a schematic structural diagram of a material receiving device involved in an embodiment of a blister device of a blister sealing machine.

[0028] Among them, the figures represent: heating device 1, heating upper cylinder 1a, heating bakelite board 1b, heating fixing plate 1c, heating lower cylinder 1d, heating support shaft 1e, heating plate 1f, heating limit ring 1g, square frame 1h, blister forming device 2, forming upper cylinder 2a, pressing plate 2b, blister upper mold 2c, punch 2c1, upper mold fixing hole 2c2, upper mold sealing surface 2c3, forming lower cylinder 2e, support plate 2f, square frame bracket 2g, blister lower mold 2h, vent 2h1, die 2h2, exhaust hole 2h3, lower mold sealing surface 2h4, lower mold fixing hole 2h5, support device 3, support seat 31, slide rail 32, crank handle 33, support beam 34, slide 35, telescopic rod 36, small cylinder 37, blister box 4, cover material traction device 5, control panel 6, sealing and pressing device 7, transmission device 8, blister packaging box 9, cutting device 10, frame 11, unloading table 12, waste material traction device 13, waste material 14, material receiving device 15, material receiving motor 151, material receiving mounting plate 152, material receiving fixing hole 1521, waste material fixing plate 153, cover material 16, cover material plate 17, plastic film plate 18, plastic film 19, plastic film traction device 20, plastic film roller 201, motor roller 202, plastic film support shaft 203, traction motor 204, mounting plate 205. DETAILED DESCRIPTION

[0029] The following reference Figure 1-8 The exemplary embodiments of the present invention are introduced. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements / features are marked with the same reference numerals.

[0030] like Figure 1 As shown, the blister sealing machine involved in the utility model includes a plastic film tray 18, a plastic film 19, a cover material 16, a cover material tray 17, waste material 14, a material receiving device 15, a waste material traction device 13, a material unloading table 12, a frame 11, a control panel 6, a sealing device and a blister device of the utility model. The sealing device includes a cover material traction device 5, a sealing pressing device 7, a transmission device 8 and a cutting device 10.

[0031] The utility model provides a blister device of a blister sealing machine, comprising a plastic film traction device 20, a heating device 1, a blister forming device 2 and a supporting device 3. The plastic film traction device 20 pulls the plastic film 19 to be heated into the heating device 1. The upper and lower surfaces of the plastic film 19 are heated by the heating device 1 and then sent into the blister forming device 2 to form a soft blister box capable of accommodating and wrapping medical devices. The blister forming device 2 is arranged on the supporting device 3. After being processed by the blister device, an opening is left on the upper part of the soft blister box, and the medical device to be packaged is placed into the soft blister box through the opening. The opening will be covered with a cover material by the sealing device in the next process, and pressed by the sealing pressing device 7, thereby completing the packaging of the medical device.

[0032] like Figure 2 As shown, the heating device 1 includes a square frame 1h, a heating upper cylinder 1a, a heating lower cylinder 1d, a heating bakelite board 1b and a heating plate 1f. The heating upper cylinder 1a and the heating lower cylinder 1d are arranged opposite to each other. They are respectively arranged on the upper beam and the lower beam of the square frame 1h. The end of the cylinder rod of each of the heating upper cylinder 1a and the heating lower cylinder 1d is connected to a heating plate 1f. Each heating plate 1f is connected to a heating bakelite board 1b. The two heating bakelite boards 1b arranged opposite to each other can heat the upper and lower surfaces of the plastic film 19 sandwiched therebetween.

[0033] A heating support shaft 1e is provided on the square frame 1h for lifting the plastic film 19 to smoothly enter between the two heating plates 1f, and two heating limit rings 1g are provided at both ends of the heating support shaft 1e for limiting the left and right positions of the plastic film 19. The heating limit ring 1g is located on the heating support shaft 1e and can move axially along the heating support shaft 1e to limit the position of the plastic film 19.

[0034] like Figure 3 As shown, the blister forming device 2 includes a square frame bracket 2g, a forming upper cylinder 2a, a pressing plate 2b, a blister upper mold 2c, a blister lower mold 2h, a supporting plate 2f and a forming lower cylinder 2e. The forming upper cylinder 2a and the forming lower cylinder 2e are respectively arranged on the upper beam and the lower beam of the square frame bracket 2g; the end of the cylinder rod of the forming upper cylinder 2a is connected to the pressing plate 2b, and the pressing plate 2b is connected to the blister upper mold 2c; the end of the cylinder rod of the forming lower cylinder 2e is connected to the supporting plate 2f, and the supporting plate 2f is connected to the blister lower mold 2h; after the blister upper mold 2c and the blister lower mold 2h are closed, the plastic film 19 can be formed into a soft blister box with an opening.

[0035] like Figure 4 As shown, the blister upper mold 2c includes an upper mold body, on which a convex mold 2c1 and an upper mold sealing surface 2c3 are arranged, and an upper mold fixing hole 2c2 is arranged on the upper mold sealing surface 2c3 for fixing the blister upper mold 2c to the lower surface of the pressure plate 2b by bolts.

[0036] like Figure 5 As shown, the blister lower mold 2h includes a lower mold body, a concave mold 2h2 and a lower mold sealing surface 2h4 are arranged on the lower mold body, a vent hole 2h1 is arranged on the side of the lower mold body, and it is connected to the small diameter exhaust hole 2h3 arranged inside the concave mold 2h2; and a lower mold fixing hole 2h5 is arranged on the lower mold body, which is used to fix the blister lower mold 2h to the upper surface of the support plate f by bolts. Using the upper and lower molds to press together and suck air to form a negative pressure can make the blister molding stable.

[0037] like Figure 6 As shown, the plastic film traction device 20 includes a plastic film roller 201, a motor roller 202, a plastic film support shaft 203 and a traction motor 204. The plastic film roller 201 is arranged in parallel with the motor roller 202, and the gap between them is used to squeeze the plastic film 19 through; the motor roller 202 is driven by the traction motor 204, and the plastic film support shaft 203 is arranged under the bracket of the plastic film traction device to support the plastic film 19.

[0038] The plastic film pulling device 20 is provided with a mounting plate 205 , and the plastic film pulling device 20 can be mounted on the frame 11 of the blister sealing machine by using bolts through a plurality of holes on the mounting plate 205 .

[0039] like Figure 7 As shown, the support device 3 includes a support seat 31 and a support beam 34. The two parallel support seats 31 and the two parallel support beams 34 together form a square space that can accommodate the plastic film 19. The support seat 31 and the support beam 34 form a moving pair through a slide rail 32 and a slide groove 35; a telescopic rod 36 parallel to the support seat 31 is arranged between the two support beams 34, and a crank 33 is installed at one end of the telescopic rod 36 for driving the two support beams 34 to move closer to or away from each other on the support seat 31.

[0040] Small cylinders 37 are provided at the two ends of the two support beams 34 for pressing and fixing the plastic film 19. The plastic film 19 is pressed and positioned by the small cylinders 37, so that the packaging shape after blister forming is more stable.

[0041] like Figure 8 As shown, the material receiving device 15 involved in the utility model is provided with a material receiving motor 151, which provides power to the waste 14; the material receiving device 15 is locked on the frame 11 through the material receiving fixing hole 1521 on the material receiving mounting plate 152; the waste fixing plate 153 is used to fix the waste 14 when the waste is rolled up.

[0042] The working process of the utility model is described as follows.

[0043] The plastic film 19 is initially installed on the plastic film disc 18 in the form of a roll; when the plastic film 19 is flattened, the plastic film 19 passes through the middle of the plastic film roller 201 and the motor roller 202 and is wrapped on the plastic film support shaft 203, and then passes through the blister device from the upper surface of the heating support shaft 1e on the heating device 1. After passing through the blister device, the middle part of the plastic film 19 is blister-formed into a blister box 4; the blister box 4 of the plastic film 19 is adhered to the cover material 16 after passing through the sealing and pressing device 7 to form a blister packaging box 9; the cutting device 10 cuts the blister packaging box 9 from the plastic film 19 and the cover material 16, and the blister packaging box 9 falls out from the unloading platform 12, and the plastic film 19 and the cover material 16 become waste 14 thereafter; the waste 14 passes through the waste traction device 13 and is rolled into a roll by the receiving device 15.

[0044] There is a heating support shaft 1e on the heating device 1, which is used to support and pull the plastic film 19; the heating limit ring 1d is located on the heating support shaft of component 1e, and can move axially along the heating support shaft 1e to limit the position of the plastic film 19; the heating upper cylinder 1a and the heating lower cylinder 1d are respectively located at the upper and lower parts of the heating device 1. When heating is required, the heating upper cylinder 1a and the heating lower cylinder 1d respectively drive the heating plate 1f and the heating bakelite board 1b to move to the middle and press on the plastic film 19. When the heating is completed, the heating upper cylinder 1a and the heating lower cylinder 1d respectively drive the heating plate 1f and the heating bakelite board 1b to move to both sides to loosen the plastic film 19; there is also a heating fixing plate 1c on the heating device 1, which is used to lock the heating device 1 on the frame 11.

[0045] The blister molding device 2 is provided with an upper molding cylinder 2a and a lower molding cylinder 2e, which are used to push the molding jig to press the plastic film 19 during blister molding; the pressing plate 2b is located outside the blister upper mold 2c, and its function is to press on the outer ring of the plastic film 19 that does not participate in the blow molding deformation.

[0046] The upper blister mold 2c has a raised convex mold 2c1, which is used to press the plastic film 19 into the concave mold 2h2 of the lower blister mold 2h, so that the plastic film 19 can be blister-molded into a blister box 4; the upper blister mold fixing hole 2c2 is used to fix the upper blister mold on the cylinder rod of the molding upper cylinder 2a. The upper blister mold 2c has an upper mold sealing surface 2c3. During blister molding, the upper mold sealing surface 2c3 and the lower mold sealing surface 2h4 of the lower blister mold 2h press the plastic film 19 in the middle, forming a seal between the lower mold sealing surface 2h4 and the plastic film 19.

[0047] There is a vent hole 2h1 on the side of the lower blister mold 2h, and an exhaust hole 2h3 with a very small diameter inside; the vent hole 2h1 is connected to the exhaust hole 2h3; during blister molding, air is sucked outward from the vent hole 2h1, so that a vacuum is formed in the blister film 19 and the cavity 2h2, causing the blister film 19 to be pressed into the cavity 2h2 by air pressure and tightly attached to the inner wall of the cavity 2h2, thereby achieving the purpose of blister molding.

[0048] There are multiple small cylinders 37 on the support beam 34 on the support device 3, which are used to press and fix the plastic film 19; there is a support beam 34 on each of the left and right sides of the support device 3; both ends of the bottom of the support beam are equipped with slide grooves 35, which are installed in the slide rails 32 on the support seat 31, so that the support beam 34 can move axially along the slide rails 32; the telescopic rod 36 is installed in the middle part of the two support beams 34, and a crank 33 is installed at the proximal end of the telescopic rod 36; turning the crank 33 can extend or shorten the telescopic rod 36, so as to adjust the spacing between the support beams 34.

[0049] The receiving device 15 is provided with a receiving motor 151, which is used to provide power to the waste 14; the receiving device 15 is locked on the frame 11 through the receiving fixing hole 152 on the receiving mounting plate 151; the waste fixing plate 153 is used to fix the waste 14 when the waste is rolled up.

[0050] Before the blister sealing machine starts working, the blister film needs to be installed: first, the plastic film 19 is passed through the middle of the plastic film roller 201 and the motor roller 202 along the plastic film 19 and wrapped on the plastic film support shaft 203, and passes through the heating device 1, the blister forming device 2 and the support device 3 from the upper surface of the heating support shaft 1e on the heating device 1; then the plastic film 19 is passed through the middle of the sealing pressing device 7, the transmission device 8 and the cutting device 10, and finally the plastic film 19 is passed through the waste traction device 13 and rolled on the receiving device 15. The cover material 16 passes through the cover material traction device 5 from the top of the plastic film 19 through the middle of the sealing pressing device 7, the transmission device 8 and the cutting device 10 and is rolled on the receiving device 15 through the waste traction device 13.

[0051] The control panel 6 is started to work, and the upper heating cylinder 1a and the lower heating cylinder 1d of the heating device 1 are started to press the plastic film 19 to start heating; at the same time, the upper molding cylinder 2a and the lower molding cylinder 2e of the blister molding device 2 and the small cylinder 37 of the supporting device 3 all press the plastic film 19 and completely fix the plastic film 19. After the heating is completed, the cylinders of the heating device 1, the blister molding device 2, and the supporting device 3 are all released; the traction motor 204 and the material receiving motor 151 are started at the same time, and the plastic film 19 is pulled to move a distance until the heated plastic film 19 moves into the blister molding device 2, and the traction motor 204 and the material receiving motor 151 are stopped at the same time. Then the blister molding is started, the upper molding cylinder 2a and the lower molding cylinder 2e of the blister molding device 2 are started, and the heated plastic film 19 is pressed into the concave mold 2h2 using the convex mold 2c1, and air is sucked out from the vent 2h1 until the blister molding is completed. During the blister forming, the upper heating cylinder 1a and the lower heating cylinder 1d of the heating device 1 start to press on the plastic film 19 to start the next round of heating, and the small cylinder 37 of the supporting device 3 presses the plastic film 19. After the blister forming is completed, the traction motor 204 and the material receiving motor 151 are started again at the same time, the plastic film 19 is pulled to move a distance, the blister box 4 is moved into the supporting device 3, and then the above actions are repeated to start the next round of heating and blister forming.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed in the present invention.

Claims

1. A blister device for a blister sealing machine, characterized in that: The invention comprises a plastic film pulling device (20), a heating device (1), a blister forming device (2) and a supporting device (3); the plastic film pulling device (20) pulls a plastic film (19) to be heated into the heating device (1); the upper and lower surfaces of the plastic film (19) are heated by the heating device (1) and then sent into the blister forming device (2) to form a soft blister box capable of accommodating and wrapping medical devices; the supporting device (3) is used to position and press the plastic film (19) after blister forming.

2. The blister device according to claim 1, characterized in that: The heating device (1) comprises a square frame (1h), a heating upper cylinder (1a), a heating lower cylinder (1d), a heating bakelite board (1b) and a heating plate (1f); the heating upper cylinder (1a) and the heating lower cylinder (1d) are respectively arranged on the upper beam and the lower beam of the square frame (1h); the end of the cylinder rod of each cylinder is connected to a heating plate (1f); each heating plate (1f) is connected to a heating bakelite board (1b); the two heating bakelite boards (1b) arranged opposite to each other can heat the upper and lower surfaces of a plastic film (19) sandwiched therebetween.

3. The blister device according to claim 2, characterized in that: A heating support shaft (1e) is provided on the square frame (1h) for lifting the plastic film (19) and allowing it to smoothly enter between the two heating plates (1f), and two heating limit rings (1g) are provided at both ends of the heating support shaft (1e) for limiting the left and right positions of the plastic film (19).

4. The blister device according to claim 1, characterized in that: The blister forming device (2) comprises a frame bracket (2g), an upper forming cylinder (2a), a pressing plate (2b), an upper blister mold (2c), a lower blister mold (2h), a support plate (2f) and a lower forming cylinder (2e); the upper forming cylinder (2a) and the lower forming cylinder (2e) are respectively arranged on the upper beam and the lower beam of the frame bracket (2g) facing each other; the end of the cylinder rod of the upper forming cylinder (2a) is connected to the pressing plate (2b), and the pressing plate (2b) is connected to the upper blister mold (2c); the end of the cylinder rod of the lower forming cylinder (2e) is connected to the support plate (2f), and the support plate (2f) is connected to the lower blister mold (2h); after the upper blister mold (2c) and the lower blister mold (2h) are closed, the plastic film (19) can be formed into a soft blister box with an opening.

5. The blister device according to claim 4, characterized in that: The blister upper mold (2c) comprises an upper mold body, on which a convex mold (2c1) and an upper mold sealing surface (2c3) are arranged, and on the upper mold sealing surface (2c3) an upper mold fixing hole (2c2) is arranged for fixing the blister upper mold (2c) to the lower surface of the pressing plate (2b) by means of bolts.

6. The blister device according to claim 4, characterized in that: The blister lower mold (2h) comprises a lower mold body, on which a concave mold (2h2) and a lower mold sealing surface (2h4) are arranged, and a vent hole (2h1) is arranged on the side of the lower mold body, which is connected to a small-diameter exhaust hole (2h3) arranged inside the concave mold (2h2); and a lower mold fixing hole (2h5) is arranged on the lower mold body, which is used to fix the blister lower mold (2h) on the upper surface of the support plate (2f) by bolts.

7. The blister device according to claim 1, characterized in that: The plastic film traction device (20) comprises a plastic film roller (201), a motor roller (202), a plastic film support shaft (203) and a traction motor (204); the plastic film roller (201) and the motor roller (202) are arranged in parallel, and a gap between them is used to squeeze through the plastic film (19); the motor roller (202) is driven by the traction motor (204), and the plastic film support shaft (203) is arranged below a bracket of the plastic film traction device (20) and is used to support the plastic film (19).

8. The blister device according to claim 7, characterized in that: The plastic film pulling device (20) is provided with a mounting plate (205), and the plastic film pulling device (20) is mounted on a frame (11) of a blister sealing machine by using bolts through a plurality of holes on the mounting plate (205).

9. The blister device according to claim 1, characterized in that: The support device (3) comprises a support seat (31) and a support beam (34); two parallel support seats (31) and two parallel support beams (34) together enclose a square space capable of accommodating a plastic film (19); a sliding rail (32) and a sliding groove (35) form a moving pair between the support seat (31) and the support beam (34); a telescopic rod (36) parallel to the support seat (31) is arranged between the two support beams (34); a crank (33) is installed at one end of the telescopic rod (36) for driving the two support beams (34) to move closer to or farther from each other on the support seat (31).

10. The blister device according to claim 9, characterized in that: Small cylinders (37) are arranged on the two ends of each of the two support beams (34) for pressing and fixing the plastic film (19).

Images