CN211766764U - Sealing device for plastic packaging bag of syringe - Google Patents

Abstract

The utility model relates to a sealed closing device of syringe plastic packaging bag, including quick-witted case, feed mechanism and send membrane mechanism, the top of machine case from left to right still is equipped with in proper order and rolls up membrane mechanism, vertical sealing mechanism, transverse seal cutting mechanism and discharge mechanism, rolls up the exit end that membrane mechanism set up at feed mechanism, and feed mechanism, roll up membrane mechanism, vertical sealing mechanism, transverse seal cutting mechanism and discharge mechanism's bottom all is located the coplanar. The device simple structure, in proper order through send the membrane, roll up the membrane, feeding, vertical seal, horizontal seal and tailor, the operation is sealed to the ejection of compact process completion, also accomplished when horizontal seal and tailor, thereby simplified the operation process and improved the quality of sealing, and do not have the side cut process, save the material.

Description

Sealing device for plastic packaging bag of syringe

Technical Field

The utility model belongs to the technical field of medical instrument packing, especially, relate to a sealed closing device of syringe plastic packaging bag.

Background

As a medical consumable, the disposable syringe is widely applied to the medical field due to the advantages of safety, sanitation and the like. The sealing device for plastic syringe packing bags in the prior art mainly comprises a machine body, a feeding mechanism, a film unwinding mechanism, a plastic suction mechanism, a paper unwinding mechanism, a hot pressing mechanism, a transverse cutting mechanism, a longitudinal cutting mechanism, a winding mechanism, an electrical system and a console, wherein the electrical system and the console are arranged in a matched mode. The specific working process is as follows: the film is discharged by a film unwinding mechanism and enters a conveying belt, when the film passes through a plastic suction mechanism, the film is heated and vacuumized by an upper die and a lower die in the plastic suction mechanism to be made into a groove shape, then the film enters a discharging area, a syringe to be packaged is conveyed into a groove through a feeding mechanism, paper for covering a product is discharged by the paper unwinding mechanism and covers the groove where the syringe is placed, a hot pressing mechanism carries out hot pressing on the paper and the groove, the product continuously advances after the hot pressing and passes through a transverse cutting mechanism, the product is transversely cut into rows according to the arrangement state of the product, then the product enters a longitudinal cutting mechanism and a winding mechanism, the edges are cut by the longitudinal cutting mechanism, and pin holes for independently discharging a single product are punctured at two sides of each product. Although this kind of closing device can satisfy mass production's needs, the process that experiences is many, and the process of sealing is complicated, hardly guarantees the inseparable link up between each process, because there is the inconvenient problem of conveying between each process, consequently can't guarantee to seal the quality of product, and adopts this kind of closing device to seal the back, need carry out horizontal and vertical side cut operation, has not only increased the waste that operating procedure has also caused the material.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sealed closing device of syringe plastic packaging bag to solve the sealed process of sealing of syringe plastic packaging bag among the prior art complicacy, experience that the process is many and can't guarantee to seal the technical problem of the quality of product.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides a sealed closing device of syringe plastic packaging bag, includes the quick-witted case, quick-witted case top is fixed with the feed mechanism that the level set up, feed mechanism includes an entrance point and an exit end, feed mechanism's one end is fixed on the top of quick-witted case, and feed mechanism's the other end extends to outside the quick-witted case along the length direction of quick-witted case left, the top of quick-witted case still is equipped with and send membrane mechanism, send membrane mechanism to be located feed mechanism's top, the top of quick-witted case still has set gradually from left to right and rolls up membrane mechanism, vertical sealing mechanism, horizontal seal cutting mechanism and discharge mechanism, it is located to roll up membrane mechanism send the below of membrane mechanism, roll up membrane mechanism and set up the exit end of feed mechanism, the one end of discharge mechanism is fixed on the top of quick-witted case, and the other end of discharge, the bottom ends of the feeding mechanism, the film rolling mechanism, the longitudinal sealing mechanism, the transverse sealing cutting mechanism and the discharging mechanism are all located on the same plane.

Roll up membrane mechanism including fixing the first bottom plate that sets up at the level on quick-witted case top, both ends about first bottom plate respectively with feed mechanism's exit end with vertical sealing mechanism fixed connection, be fixed with the baffle that two slopes that extend right set up on the first bottom plate along the fore-and-aft direction, distance between two baffles reduces from left to right in proper order, the right-hand member of baffle is fixed with the guide way that the level set up, the longitudinal section of guide way is the V type, the one end that the guide way deviates from the baffle extends to the tip of first bottom plate right-hand member.

The longitudinal sealing mechanism comprises a horizontally arranged second bottom plate fixed at the top end of the case, the left end and the right end of the second bottom plate are respectively fixedly connected with the right end of the first bottom plate and the transverse sealing cutting mechanism, the second bottom plate is sequentially provided with a guide wheel set, a heating block set, a driving wheel set and a cooling wheel set from left to right, the guide wheel group comprises two guide wheels arranged at intervals along the front-back direction, the heating block group comprises two heating blocks arranged at intervals along the front-back direction, the heating block is fixedly connected on the second bottom plate, the driving wheel set comprises two driving wheels which are arranged at intervals along the front-back direction, the cooling wheel set comprises two cooling wheels which are arranged at intervals along the front and back direction, the cooling wheels are of hollow structures, the cooling wheel is internally communicated with cooling water which is circularly arranged, and the guide wheel, the driving wheel and the cooling wheel are all rotationally connected to the second bottom plate.

Horizontal seal cutting mechanism includes the support frame, the support frame includes the stand that sets up around a roof and two, the bottom fixed connection of stand is in the top of quick-witted case, from the top down rotates in proper order between two stands and is connected with arbor and lower arbor, the intermediate position of going up arbor and lower arbor is fixed with corresponding last cutter and lower cutter respectively, goes up cutter and lower cutter and is parallel to each other, goes up the inside heating wire that all is equipped with of cutter and lower cutter, go up the arbor and still be fixed with safety cover and lower safety cover on the arbor respectively down, the longitudinal section of going up safety cover and lower safety cover all is semi-circular.

The direction wheelset with be equipped with the mount pad between the heating block group, the ear plate and a mounting panel that the mount pad set up around including two, the mounting panel is the style of calligraphy of falling U, the mount pad passes through the ear plate to be fixed on the second bottom plate, the top fixedly connected with of mounting panel is along the deflector of second bottom plate length direction extension, the one end that the deflector deviates from the mounting panel is close to the tip of second bottom plate right-hand member.

The discharging mechanism comprises a discharging box, and a discharging conveyor belt is installed in the discharging box.

The outer surfaces of the upper protective cover and the lower protective cover are both fixed with sponge.

The upper cutter shaft and the lower cutter shaft are both made of high-temperature-resistant materials.

The utility model has the advantages that: (1) the film winding mechanism, the longitudinal sealing mechanism, the transverse sealing cutting mechanism and the discharging mechanism are sequentially arranged from left to right, so that the working procedures of sealing operation are reduced, the operation process is simplified, the quality of a sealed product is improved, the working efficiency is improved, the transverse and longitudinal trimming working procedures are not required, and the materials are saved; (2) the longitudinal sealing mechanism comprises a cooling wheel set, the cooling wheel set is utilized to rapidly cool the heat-sealing part at the bottom end of the semi-finished product, and rapid forming is facilitated, and a guide plate is arranged above the guide wheel set, the heating block set and the cooling wheel set, so that the guide plate not only can play a role of guiding, but also can force the heat-sealing part at the lower end of the semi-finished product passing through the bottom end of the guide plate to bend through the limitation of the height of the guide plate, so that the heat-sealing part at the lower end of the semi-finished product coming out of the cooling wheel set is gradually turned over from the vertical; (3) go up the surface of safety cover and lower safety cover all and be fixed with the sponge, the sponge not only plays thermal-insulated effect, can avoid the wrapping bag to be heated except that the rest part of tip, but also has certain squeezing action to the wrapping bag, helps discharging unnecessary air in the wrapping bag, reduces the volume of wrapping bag.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a top view of the film winding mechanism;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic structural view of a cylindrical plastic film;

FIG. 5 is a top view of the longitudinal sealing mechanism;

fig. 6 is a right side view of the cross seal cutting mechanism.

Reference numerals: 1-case, 2-electric control mechanism, 3-feeding mechanism, 4-touch screen mechanism, 5-film feeding mechanism, 6-film rolling mechanism, 7-longitudinal sealing mechanism, 8-transverse sealing cutting mechanism, 9-discharging mechanism, 30-supporting column, 31-inlet end, 32-outlet end, 60-first bottom plate, 61-baffle, 62-guide groove, 63-cylindrical plastic film, 700-second bottom plate, 701-guide wheel set, 702-heating block set, 703-driving wheel set, 704-cooling wheel set, 705-guide wheel, 706-heating block, 707-electric lead, 708-high temperature resistant base, 709-threaded hole, 710-driving wheel, 711-cooling wheel, 712-mounting seat, 713-ear plate, 714-mounting plate, 715-guide plate, 80-support frame, 81-top plate, 82-upright column, 83-upper knife shaft, 84-lower knife shaft, 85-upper knife, 86-lower knife shaft, 87-upper protective cover, 88-lower protective cover, 89-sponge, 90-discharge box, 91-discharge conveyor belt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

The left-right direction shown in fig. 1 is the direction of the longitudinal seal, and the front-back direction is the direction of the transverse seal.

As shown in figure 1, the utility model comprises a machine case 1, an electrical control mechanism 2 is installed in the machine case 1, a horizontally arranged feeding mechanism 3 and a vertically arranged touch screen mechanism 4 are fixed on the top end of the machine case 1, the touch screen mechanism 4 is electrically connected with the electrical control mechanism 2, one end of the feeding mechanism 3 is fixed on the top end of the machine case 1, the other end of the feeding mechanism 3 extends to the outside of the machine case 1 along the length direction of the machine case 1, a supporting column 30 is fixedly connected below the left end of the feeding mechanism 3, the feeding mechanism 3 comprises an inlet end 31 and an outlet end 32, a film feeding mechanism 5 is fixed on the side surface of the touch screen mechanism 4, the film feeding mechanism 5 is positioned above the feeding mechanism 3, the top end of the machine case 1 is sequentially provided with a film rolling mechanism 6, a longitudinal sealing mechanism 7, a transverse sealing cutting mechanism 8 and a discharging mechanism 9 from left to right, go out the left bottom mounting of workbin 90 on quick-witted case 1's top, the right-hand member of play workbin 90 extends to outside quick-witted case 1 right along quick-witted case 1's length direction, install exit conveyor 91 in the play workbin 90, it is located the below of sending membrane mechanism 5 to roll up membrane mechanism 6, it sets up the exit end 32 at feed mechanism 3 to roll up membrane mechanism 6, feed mechanism 3, roll up membrane mechanism 6, vertical sealing mechanism 7, the bottom of transverse seal cutting mechanism 8 and discharge mechanism 9 all is located the coplanar, feed mechanism 3, send membrane mechanism 5, roll up membrane mechanism 6, vertical sealing mechanism 7, transverse seal cutting mechanism 8 and discharge mechanism 9 all link to each other with electrical control mechanism 2.

The electric control mechanism 2 mainly comprises a power supply system, a PLC and a stepping motor driver which are connected in sequence. The touch screen mechanism 4 can realize human-computer interaction, the electric control mechanism 2 and the touch screen mechanism 4 are matched with each other for use, and the automatic control of the whole device can be realized by modifying some parameters through the touch screen mechanism 4. The film feeding mechanism 5 is used for conveying the packaging film to the film rolling mechanism 6 for film rolling operation, and the feeding mechanism 3 is used for conveying the syringe to be packaged to the film rolling mechanism 6. The electric control mechanism 2, the touch screen mechanism 4, the film feeding mechanism 5 and the feeding mechanism 3 are all designed in the prior art, and the specific structure and the connection relationship are not described in detail.

As shown in fig. 1 and 2, the film winding mechanism 6 includes a first bottom plate 60 fixed at the top end of the chassis 1 and arranged horizontally, the left and right ends of the first bottom plate 60 are respectively fixedly connected with the outlet end 32 of the feeding mechanism 3 and the longitudinal sealing mechanism 7, two baffles 61 extending rightwards and arranged obliquely are fixed on the first bottom plate 60 along the front and rear directions thereof, the distance between the two baffles 61 decreases from left to right, a horizontally arranged guide groove 62 is fixed at the right end of the two baffles 61, as shown in fig. 3, the longitudinal section of the guide groove 62 is V-shaped with an open lower end, one end of the guide groove 62 departing from the baffles 61 extends to the end of the right end of the first bottom plate 60, as shown in fig. 4, the plastic film is rolled into a cylinder shape with the same shape as the guide groove 62 in the guide groove 62, and the longitudinal section is V.

As shown in fig. 1 and 5, the longitudinal sealing mechanism 7 includes a horizontally disposed second bottom plate 700 fixed on the top end of the chassis 1, the left and right ends of the second bottom plate 700 are respectively fixedly connected to the right end of the first bottom plate 60 and the transverse sealing cutting mechanism 8, a guiding wheel set 701, a heating block set 702, a driving wheel set 703 and a cooling wheel set 704 are sequentially disposed on the second bottom plate 700 from left to right, the guiding wheel set 701 includes two guiding wheels 705 disposed at intervals along the front-back direction, the heating block set 702 includes two heating blocks 706 disposed at intervals along the front-back direction, heating wires are disposed in the heating blocks 706, the heating wires are connected to a power supply system of the electric control mechanism 2 through electrical leads 707, a high temperature resistant base 708 is fixed on the bottom end of the heating block 706, the high temperature resistant base 708 is fixed on the second bottom plate 700, a threaded hole 709 is formed on the heating block 706, the heating block 706 is, the driving wheel set 703 comprises two driving wheels 710 arranged at intervals along the front-rear direction, the driving wheels 710 are driven by a stepping motor driver of the electric control mechanism 2, the cooling wheel set 704 comprises two cooling wheels 711 arranged at intervals along the front-rear direction, the cooling wheels 711 are of a hollow structure, cooling water circularly arranged is introduced into the cooling wheels 711, the guide wheels 705, the driving wheels 710 and the cooling wheels 711 are all rotatably connected on the second bottom plate 700, the gap between the two driving wheels 710 is slightly larger than the thickness of two layers of films and is the same as the gap between the two heating blocks 706 and the gap between the two cooling wheels 711, the part to be heat-sealed at the lower end of the semi-finished product can be ensured to be in a clamped state when passing through the two driving wheels 710, the gap between the two guide wheels 705 is larger than the gap between the two driving wheels 710, the guide wheels 705 only play a role of guiding and do not extrude the part to, a mounting seat 712 is arranged between the guide wheel set 701 and the heating block set 702, the mounting seat 712 comprises two ear plates 713 and a mounting plate 714 which are arranged in a front-back manner, the mounting plate 714 is in an inverted U shape, the mounting seat 712 is fixed on the second bottom plate 700 through the ear plates 713, the top end of the mounting plate 714 is fixedly connected with a guide plate 715 which extends along the length direction of the second bottom plate 700, the distance between the bottom end of the guide plate 715 and the top end of the second bottom plate 700 is slightly larger than the diameter of the syringe cylinder to be packaged and smaller than the distance between the top end and the bottom end of the cylindrical plastic film 63 output from the guide groove 62 of the film rolling structure 6, and one end of the guide plate 715 departing from the mounting plate 714 is close to the end part.

As shown in fig. 1 and 6, the transverse sealing cutting mechanism 8 includes a supporting frame 80, the supporting frame 80 includes a top plate 81 and two upright posts 82 arranged in front and back, bottom ends of the upright posts 82 are fixedly connected to a top end of the machine case 1, an upper knife shaft 83 and a lower knife shaft 84 are rotatably connected between the two upright posts 82 from top to bottom in sequence, the upper knife shaft 83 and the lower knife shaft 84 are made of high temperature resistant materials, an upper cutter 85 arranged along a length direction of the upper knife shaft 83 is fixedly connected to a middle position of the upper knife shaft 83, a lower cutter 86 parallel to the upper cutter 85 is fixedly connected to a middle position of the lower knife shaft 84, heating wires are arranged inside the upper cutter 85 and the lower cutter 86, the heating wires are connected with a power supply system of the electric control mechanism 2 through electric leads 707, an upper protective cover 87 and a lower protective cover 88 are also fixedly connected to the upper knife shaft 83 and the lower knife shaft 84 respectively, longitudinal sections of the, go up the surface of safety cover 87 and lower safety cover 88 and all be fixed with sponge 89, sponge 89 not only plays thermal-insulated effect, can avoid the wrapping bag to be heated except that the rest of tip, but also has certain squeezing action to the wrapping bag, helps discharging unnecessary air in the wrapping bag, reduces the volume of wrapping bag, saves space.

The utility model discloses a theory of operation does: the plastic film is continuously conveyed to the film rolling mechanism 6 by the film conveying mechanism 5, a part of the plastic film at the front end is rolled into a long cylinder with a V-shaped longitudinal section in a guide groove 62 of the film rolling mechanism 6 as shown in figure 4, the top end of the cylindrical plastic film 63 is sealed, the bottom end is a part to be heat-sealed, the bottom end of a section of the cylindrical plastic film 63 at the front end is manually clamped in a slit between two driving wheels 710, then a motor for driving the feeding mechanism 3 and the driving wheels 710 to move is simultaneously started, the cylindrical plastic film 63 clamped in the slit of the driving wheels 710 moves rightwards along with the rotation of the driving wheels 710, meanwhile, the syringe to be packaged conveyed from the feeding mechanism 3 is conveyed into the guide groove 62, when the cylindrical plastic film 63 wrapped with the syringe moves rightwards along with the rotation of the driving wheels 710 to the longitudinal sealing mechanism 7, the part to be heat-sealed passes through the guide wheels 705 and then is extruded and heat-sealed in the slit between two heating blocks 706, and then continuously moves rightwards to the cooling And a group 704, in which the heat-sealed portion at the lower end of the cylindrical plastic film 63 is rapidly formed after being cooled by the cooling wheel 711, because the distance between the bottom end of the guide plate 715 and the top end of the second bottom plate 700 is slightly larger than the diameter of the syringe to be packaged and smaller than the distance between the top end and the bottom end of the cylindrical plastic film 63 output from the guide groove 62 of the film rolling structure 6, when the cylindrical plastic film 63 wraps the syringe and moves to contact with the guide plate 715, the heat-sealed portion at the bottom end of the cylindrical plastic film 63 is bent due to the height limitation of the guide plate 715, gradually changes from a vertical state to a horizontal state, and then enters the transverse sealing and cutting mechanism 8, the upper cutter 85 and the lower cutter 86 of the transverse sealing and cutting mechanism 8 rotate along with the rotation of the upper cutter shaft 83 and the lower cutter shaft 84, and the rotation directions of the upper cutter 85 and the lower cutter 86 are opposite, and every 360 degrees of the upper cutter 85 and the lower, the blades of the two are jointed with each other once. Because the upper cutter 85 and the lower cutter 86 are internally provided with electric heating wires and have the function of hot-press sealing, when the upper cutter 85 and the lower cutter 86 are jointed, the end part of the semi-finished product is transversely cut off while the end part is hot-press sealed, when the upper cutter 85 and the lower cutter 86 are not jointed, the end part of one end of the semi-finished product along the length direction moves from the gap of the sponge 89 wrapped on the upper protective cover 87 and the lower protective cover 88 to the right from the input end of the transverse seal cutting mechanism 8 to the upper cutter 85 and the lower cutter 86, when the end part of the other end of the semi-finished product along the length direction is just clamped in the slit between the upper cutter 85 and the lower cutter 86, and is extruded by the sponge 89 wrapped on the upper protective cover 87 and the lower protective cover 88 in the process of the right movement to discharge redundant air in the packaging bag, after the transverse seal cutting process is finished, the output end of the transverse seal cutting mechanism 8 is output to the discharge conveyor belt 91 of, then the materials are conveyed to a material storage box, and the sealing operation is further completed. The utility model discloses from left to right set gradually roll up membrane mechanism 6, vertical sealing mechanism 7, transverse sealing cutting mechanism 8, discharge mechanism 9, reduced the process of sealing the operation, simplified operation process, improved the quality of sealing the product, improved work efficiency, and do not have horizontal and vertical side cut process, practiced thrift the material.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims (8)

1. The utility model provides a sealed closing device of syringe plastic packaging bag, includes quick-witted case, quick-witted case top is fixed with the feed mechanism that the level set up, feed mechanism includes an entrance point and an exit end, the top at quick-witted case is fixed to feed mechanism's one end, and feed mechanism's the other end extends to outside quick-witted case along the length direction of quick-witted case left, the top of machine case still is equipped with and send membrane mechanism, send membrane mechanism to be located feed mechanism's top, its characterized in that: the top of machine case from left to right has still set gradually and has rolled up membrane mechanism, vertical sealing mechanism, transverse seal cutting mechanism and discharge mechanism, it is located to roll up membrane mechanism the below of sending membrane mechanism, it sets up to roll up membrane mechanism feed mechanism's exit end, discharge mechanism's one end is fixed on the top of machine case, and discharge mechanism's the other end extends to outside the machine case right along the length direction of machine case, feed mechanism, roll up membrane mechanism, vertical sealing mechanism, transverse seal cutting mechanism and discharge mechanism's bottom all is located the coplanar.

2. The sealing and sealing device for plastic packing bags for syringes according to claim 1, wherein: roll up membrane mechanism including fixing the first bottom plate that sets up at the level on quick-witted case top, both ends about first bottom plate respectively with feed mechanism's exit end with vertical sealing mechanism fixed connection, be fixed with the baffle that two slopes that extend right set up on the first bottom plate along the fore-and-aft direction, distance between two baffles reduces from left to right in proper order, the right-hand member of baffle is fixed with the guide way that the level set up, the longitudinal section of guide way is the V type, the one end that the guide way deviates from the baffle extends to the tip of first bottom plate right-hand member.

3. The sealing and sealing device for plastic packing bags for syringes according to claim 2, wherein: the longitudinal sealing mechanism comprises a horizontally arranged second bottom plate fixed at the top end of the case, the left end and the right end of the second bottom plate are respectively fixedly connected with the right end of the first bottom plate and the transverse sealing cutting mechanism, the second bottom plate is sequentially provided with a guide wheel set, a heating block set, a driving wheel set and a cooling wheel set from left to right, the guide wheel group comprises two guide wheels arranged at intervals along the front-back direction, the heating block group comprises two heating blocks arranged at intervals along the front-back direction, the heating block is fixedly connected on the second bottom plate, the driving wheel set comprises two driving wheels which are arranged at intervals along the front-back direction, the cooling wheel set comprises two cooling wheels which are arranged at intervals along the front and back direction, the cooling wheels are of hollow structures, the cooling wheel is internally communicated with cooling water which is circularly arranged, and the guide wheel, the driving wheel and the cooling wheel are all rotationally connected to the second bottom plate.

4. The sealing and sealing device for plastic packing bags for syringes according to claim 3, wherein: horizontal seal cutting mechanism includes the support frame, the support frame includes the stand that sets up around a roof and two, the bottom fixed connection of stand is in the top of quick-witted case, from the top down rotates in proper order between two stands and is connected with arbor and lower arbor, the intermediate position of going up arbor and lower arbor is fixed with corresponding last cutter and lower cutter respectively, goes up cutter and lower cutter and is parallel to each other, goes up the inside heating wire that all is equipped with of cutter and lower cutter, go up the arbor and still be fixed with safety cover and lower safety cover on the arbor respectively down, the longitudinal section of going up safety cover and lower safety cover all is semi-circular.

5. The sealing and sealing device for plastic packing bags for syringes according to claim 3, wherein: the direction wheelset with be equipped with the mount pad between the heating block group, the ear plate and a mounting panel that the mount pad set up around including two, the mounting panel is the style of calligraphy of falling U, the mount pad passes through the ear plate to be fixed on the second bottom plate, the top fixedly connected with of mounting panel is along the deflector of second bottom plate length direction extension, the one end that the deflector deviates from the mounting panel is close to the tip of second bottom plate right-hand member.

6. The sealing and sealing device for plastic packing bags for syringes according to claim 4, wherein: the discharging mechanism comprises a discharging box, and a discharging conveyor belt is installed in the discharging box.

7. The sealing and sealing device for plastic packing bags for syringes according to claim 4, wherein: the outer surfaces of the upper protective cover and the lower protective cover are both fixed with sponge.

8. The sealing and sealing apparatus for plastic packing bags for syringes according to claim 4 or 6, wherein: the upper cutter shaft and the lower cutter shaft are both made of high-temperature-resistant materials.

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