CN217754399U

CN217754399U - Synchronous heat-sealing device for medicine packaging bags

Info

Publication number: CN217754399U
Application number: CN202221986101.7U
Authority: CN
Inventors: 蔡卫东; 郭俊波; 蔡宇
Original assignee: Yichang Forward High Tech Co ltd
Current assignee: Yichang Forward High Tech Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-11-08
Anticipated expiration: 2032-07-29

Abstract

The utility model provides a synchronous sealing device of medicine wrapping bag, which comprises a frame, install closing device on two bracing pieces of upper end and lower extreme respectively, sliding connection about bracing piece both ends and the frame, the frame is located the below of two bracing pieces of lower extreme and is equipped with the axis of rotation respectively, the axis of rotation is connected with the centre bore fixed connection of rotatory piece, rotatory piece one end is through the extension axle swivelling joint of first connecting rod with the bracing piece of upper end, the other end is through the extension axle swivelling joint of second connecting rod with the bracing piece of lower extreme, the gear is installed to the axis of rotation, drive arrangement drive gear positive and negative rotation drives two bracing pieces of upper end and two bracing pieces of lower extreme synchronous opening and shutting motions. Through the structure, the upper sealing device and the lower sealing device can be synchronously opened and closed, and are always positioned at the same position with the height of the film on the production line when the upper sealing device and the lower sealing device are closed. Therefore, the film on the production line is not scratched with the heat sealing knife, the medicine packaging bag can be subjected to bilateral heat sealing, and the sealing structure strength is improved.

Description

Synchronous heat-sealing device for medicine packaging bags

Technical Field

The utility model relates to a medical plastic packaging bag technical field especially relates to a synchronous sealing device of medicine wrapping bag.

Background

In heat sealing medical plastic packaging bags, a common method is to pass the packaging bag through a fixing plate below a heat sealing knife, and the heat sealing knife extrudes the packaging bag on the fixing plate to form a seal. Because the position of the fixing plate is fixed, when the packaging bag is produced, the bottom side of the plastic bag can be scratched, so that scratches are formed, and the product quality is influenced. In addition, the heat sealing is performed by adopting the heat sealing knife to press the heat sealing edge on one side, so that the sealing strength is poor. In order to solve the problems, the inventor adopts double-side heat sealing to the medicine packaging bag in advance, but the problem to be solved is how to synchronously open and close the upper sealing device and the lower sealing device, and when the upper sealing device and the lower sealing device are closed, the upper sealing device and the lower sealing device are always positioned at the same height position as the film on the production line.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the problem that exists among the above-mentioned background art is solved, provide one kind and can make upper and lower sealing device open and shut synchronously to when enabling upper and lower sealing device to fold, be in the same position of film height on the production line all the time. Through the device, film on the production line does not have the scraping with the hot sealing sword department to can adopt two side heat-seals to the medicine wrapping bag, improve seal structure intensity.

In order to realize the technical characteristics, the purpose of the utility model is realized as follows: a synchronous heat-sealing device for medical packaging bags comprises a rack, wherein two supporting rods are respectively arranged at the upper end and the lower end of the inner side of the rack, sealing devices for sealing the medical packaging bags are respectively arranged on the two supporting rods at the upper end and the lower end of the rack, and the sealing devices arranged on the two supporting rods at the upper end are opposite to the sealing devices arranged on the two supporting rods at the lower end; the two ends of the supporting rod are connected with the rack in a vertical sliding mode, longitudinal long holes are formed in the two ends, located on the supporting rod, of the rack, and long holes extending outwards are formed in the two ends of the supporting rod; the two ends of the rotating shaft are rotatably connected with the rack and extend out of the rack, and the two ends of the rotating shaft are fixedly provided with rotating blocks; the rotating shaft is fixedly connected with a central hole of the rotating block, one end of the rotating block is rotatably connected with the extending shaft of the supporting rod at the upper end through a first connecting rod, and the other end of the rotating block is rotatably connected with the extending shaft of the supporting rod at the lower end through a second connecting rod; the gear is installed to the axis of rotation, and drive arrangement drive gear just rotates in the positive and negative direction and drives two bracing pieces in the upper end and two bracing pieces in the lower extreme synchronous opening and shutting motion.

Two opposite sliding grooves are fixedly arranged on the two sides of the long hole on the inner side of the rack, and rectangular sliding blocks are arranged at the two ends of the supporting rod respectively and are clamped in the two opposite sliding grooves in a sliding mode.

The sealing device comprises a bottom plate which is respectively connected with the two upper supporting rods and the two lower supporting rods, a buffer cylinder is installed on the bottom plate, and a heat sealing knife is installed on a piston rod of the buffer cylinder.

The two support rods at the upper end and the two support rods at the lower end are provided with slide rails at opposite sides, slide blocks are arranged at two ends of a bottom plate of the sealing device, which are connected with the support rods, and the slide blocks are arranged in a matched manner with the slide rails; the sealing devices on the two supporting rods at the upper end are connected with the sealing devices on the two supporting rods at the lower end through positioning rods, and the positioning rods are fixed with the sealing device at one side and are in sliding connection with the sealing device at the other side; and the sealing devices on the two supporting rods at the upper end are provided with adjusting devices for adjusting positions.

The adjusting device comprises two fixing plates transversely arranged at the upper end on the supporting rod and a screw seat fixedly arranged on the bottom plate, one end of the screw rod is rotatably connected with the fixing plates, the other end of the screw rod is rotatably connected with the screw seat in a threaded fit manner, one end connected with the fixing plates extends outwards, and a hand wheel is arranged at the end part of the screw rod.

The driving device comprises a rack meshed with the gear, one end of the rack is connected with a piston rod of an air cylinder, and the air cylinder is fixedly connected with a support arranged on the rack; and a guide groove block is arranged at the bottom of the rack.

And a support bearing seat is arranged on the rotating shaft at one side or two sides of the gear and is connected with the frame.

The utility model discloses there is following beneficial effect:

1. one end of the rotating block is rotatably connected with the supporting rod at the upper end through the first connecting rod, the other end of the rotating block is rotatably connected with the supporting rod at the lower end through the second connecting rod, the upper sealing device and the lower sealing device can be synchronously opened and closed, and when the upper sealing device and the lower sealing device are closed, the upper sealing device and the lower sealing device are always positioned at the same position with the height of a film on a production line, so that the film on the production line is not scraped with a heat sealing knife, the medicine packaging bags can be subjected to bilateral heat sealing, and the strength of the sealing structure is improved.

2. The two ends of the supporting rod are respectively provided with a rectangular sliding block which is clamped in the two opposite sliding grooves in a sliding way. Through rectangle slider and two relative spout cooperation sliding connection, simple structure makes can the bracing piece when gliding from top to bottom, can also restrict the bracing piece and rotate.

3. The two upper supporting rods and the two lower supporting rods are provided with a slide rail at the opposite sides, the bottom plate of the sealing device is provided with a slide block at the two ends connected with the supporting rods, the sealing devices on the two upper supporting rods are provided with adjusting devices for adjusting the positions of the sealing devices, and the upper sealing devices and the lower sealing devices can be synchronously adjusted and moved through the positioning rods.

4. The rack reciprocating motion is driven by the cylinder, the structure is simple, the use is convenient, the stroke of the cylinder can be customized, the reciprocating distance can be controlled, and the complicated control program driven by the motor is avoided.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view of the structure of the present invention.

Fig. 4 is a left side view structure diagram of the present invention.

Fig. 5 is a schematic view of another perspective structure of the present invention.

Fig. 6 is a schematic view of the structure of the adjusting device of the present invention.

In the figure: the device comprises a frame 10, a long hole 11, a sliding chute 12, a roller 13, a support rod 21, a rectangular sliding block 211, an extension shaft 212, a sliding rail 213, a sealing device 22, a bottom plate 221, a buffer cylinder 222, a heat sealing knife 223, a sliding block 224, a positioning rod 23, an adjusting device 24, a fixing plate 241, a screw seat 242, a screw rod 243, a hand wheel 244, a rotating block 31, a first connecting rod 32, a second connecting rod 33, a rotating shaft 34, a gear 35 and a support bearing seat 36; a driving device 40, a rack 41, a guide groove block 42, a support 43 and a cylinder 44.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1-6, a synchronous heat sealing device for medical packaging bags comprises a frame 10, two support rods 21 are respectively installed at the upper end and the lower end of the inner side of the frame 10, sealing devices 22 for sealing the medical packaging bags are respectively installed on the two support rods 21 at the upper end and the lower end, and the sealing devices 22 installed on the two support rods 21 at the upper end are opposite to the sealing devices 22 installed on the two support rods 21 at the lower end. The two ends of the support rod 21 are connected with the frame 10 in a vertical sliding manner, the frame 10 is provided with longitudinal long holes 11 at the two ends of the support rod 21, and extension shafts 212 are arranged at the two ends of the support rod 21 and extend out of the long holes 11. The frame 10 is provided with a rotating shaft 34 below the two support rods 21 at the lower end, two ends of the rotating shaft 34 are rotatably connected with the frame 10 and extend out of the frame 10, and two ends of the rotating shaft 34 are fixedly provided with rotating blocks 31. The rotation shaft 34 is fixedly connected to the center hole of the rotation block 31, one end of the rotation block 31 is rotatably connected to the extension shaft 212 of the upper support rod 21 through the first link 32, and the other end is rotatably connected to the extension shaft 212 of the lower support rod 21 through the second link 33. The rotating shaft 34 is provided with a gear 35, and the driving device 40 drives the gear 35 to rotate positively and negatively to drive the two upper supporting rods 21 and the two lower supporting rods 21 to move synchronously in an opening and closing manner. The driving device 40 may be a linear cylinder or an oil cylinder, or may be a stepping motor or a servo motor.

In use, the driving device 40 drives the gear 35 to rotate in a reciprocating manner, so as to drive the rotating shaft 34 to rotate, so as to drive the rotating block 31 to swing, referring to fig. 4, when the rotating block 31 swings clockwise, one end of the rotating block 31 pulls the first connecting rod 32 downwards, the first connecting rod 32 pulls the supporting rod 21 at the upper end to move downwards, meanwhile, the other end of the rotating block 31 pushes the second connecting rod 33 upwards, the second connecting rod 33 pushes the supporting rod 21 at the lower end to move upwards, so that the sealing devices 22 respectively installed on the two supporting rods 21 at the upper end and the lower end move towards each other to be close up, and the medicine bagging is thermally sealed. After the heat sealing is finished, the driving device 40 drives the gear 35 to rotate anticlockwise, one end of the rotating block 31 upwards pushes the first connecting rod 32, the first connecting rod 32 pushes the upper end of the supporting rod 21 to move upwards, meanwhile, the other end of the rotating block 31 downwards pulls the second connecting rod 33, and the second connecting rod 33 pulls the lower end of the supporting rod 21 to move downwards, so that the sealing devices 22 respectively installed on the two supporting rods 21 at the upper end and the lower end move reversely to be separated, and films for processing plastic bags can pass through conveniently. In order to adjust the height of the closing device, the first connecting rod 32 and the second connecting rod 33 adopt an adjustable structure of a double-head screw rod.

Through the structure, the upper sealing device and the lower sealing device can be synchronously opened and closed, and are always positioned at the same position with the height of the film on the production line when the upper sealing device and the lower sealing device are closed. Therefore, the film on the production line is not scratched with the heat sealing knife, the medicine packaging bag can be subjected to bilateral heat sealing, and the sealing structure strength is improved.

In a preferred embodiment, referring to fig. 2, two opposite sliding slots 12 are fixedly installed on the inner side of the frame 10 and located on both sides of the elongated hole 11, and two ends of the supporting rod 21 are respectively provided with a rectangular sliding block 211 which is slidably clamped in the two opposite sliding slots 12. Through the matching sliding connection of the rectangular sliding block 211 and the two opposite sliding grooves 12, the structure is simple, and the supporting rod 21 can slide up and down and can be limited to rotate while the supporting rod 21 can be limited to rotate.

In a preferred embodiment, referring to fig. 3, the sealing device 22 comprises a bottom plate 221 connected to the two upper support rods 21 and the two lower support rods 21, respectively, the bottom plate 221 is provided with a buffer cylinder 222, and a piston rod of the buffer cylinder 222 is provided with a heat sealing knife 223. The sealing device 22 may be a linear type (not shown) perpendicular to the moving direction of the medical packaging bag, and transversely seals the medical packaging bag; referring to fig. 3, the bag may be sealed at an angle by a tilting type having an angle with respect to the traveling direction of the bag. The closing devices 22 may be installed one above the other, or two or more above the other. The buffer cylinder 222 is used for buffering the pressure when the upper and lower sealing devices 22 contact. Of course, in order to ensure that the angles of the upper and lower heat seal blades 223 can be matched when they are closed, a guide may be attached to the base 221 to connect the heat seal blades 223.

In order to adjust the position of the sealing device 22 on the production line, referring to fig. 1 and 3, a sliding rail 213 is disposed on one side of the two support rods 21 at the upper end and the two opposite sides of the two support rods 21 at the lower end, and sliding blocks 224 are mounted at two ends of the bottom plate 221 of the sealing device 22, which are connected to the support rods 21, and the sliding blocks 224 are mounted in cooperation with the sliding rail 213. The sealing devices 22 on the two support rods 21 at the upper end are connected with the sealing devices 22 on the two support rods 21 at the lower end through positioning rods 23, and the positioning rods 23 are fixed with the sealing device 22 at one side and are in sliding connection with the sealing device 22 at the other side; the closing devices 22 on the two support rods 21 at the upper end are provided with adjusting devices 24 for adjusting the position. The positioning rod 23 is used to adjust and move the upper end sealing device 22 and the lower end sealing device 22 in synchronization with each other. The adjusting device 24 may be a screw rod structure, a rack and pinion structure, or other adjusting structure.

In a preferred embodiment, the adjusting device 24 includes a fixing plate 241 transversely installed on the two support rods 21 at the upper end, and a screw seat 242 fixedly installed on the bottom plate 221, one end of the screw 243 is rotatably connected to the fixing plate 241, the other end of the screw is rotatably connected to the screw seat 242 in a screw-threaded fit manner, one end connected to the fixing plate 241 extends outwards, and a hand wheel 244 is installed at the end of the screw, so that the structure is simple, and the hand wheel 244 is rotated to adjust the position of the sealing device 22. With the above structure, the adjusting device 24 follows the two upper support rods 21 to move, and can adjust the position of the sealing device 22.

In a preferred scheme, referring to fig. 1 and 5, the driving device 40 comprises a rack 41 engaged with the gear 35, one end of the rack 41 is connected with a piston rod of a cylinder 44, and the cylinder 44 is fixedly connected with a support 43 mounted on the frame 10; the bottom of the rack 41 is provided with a guide groove block 42. Guide way block 42 is spacing to rack 41, and rack 41 slides in guide way block 42, and cylinder 44 drives rack 41 reciprocating motion, simple structure, and convenient to use can be through the stroke of customization cylinder 44 to the reciprocal distance of control has avoided adopting the loaded down with trivial details control procedure of motor drive.

Further, in a preferred embodiment, a support bearing seat 36 is mounted on the rotating shaft 34 on one side or both sides of the gear 35 to connect with the frame 10. The deformation of the rotary shaft 34 at the time of rotation is prevented due to insufficient rigidity of the rotary shaft 34, and the deformation of the rotary shaft 34 is prevented by supporting the bearing housing 36.

In order to support the bag film when it passes through the upper and lower sealing devices 22, unpowered rollers 13 are provided inside the frame 10 at the height of the bag film in the production line, and the rollers 13 are located on both sides of the sealing devices 22.

The utility model discloses a working process and principle:

referring to fig. 1, during sealing, the piston rod of the cylinder 44 is retracted, the rack 41 is pulled, the rack 41 drives the gear 35 to rotate clockwise, so as to drive the rotating block 31 to swing clockwise, one end of the rotating block 31 pulls the first link 32 downwards, the first link 32 pulls the support rod 21 at the upper end to move downwards, meanwhile, the other end of the rotating block 31 pushes the second link 33 upwards, the second link 33 pushes the support rod 21 at the lower end to move upwards, so that the sealing devices 22 respectively mounted on the two support rods 21 at the upper end and the lower end move towards each other to close up, and the medical bag is heat sealed.

After the heat sealing is finished, the piston rod of the cylinder 44 extends out, the rack 41 is pushed, the rack 41 drives the gear 35 to rotate anticlockwise, thereby driving the rotating block 31 to swing anticlockwise, one end of the rotating block 31 upwards pushes the first connecting rod 32, the first connecting rod 32 pushes the upper end of the supporting rod 21 to move upwards, meanwhile, the other end of the rotating block 31 downwards pulls the second connecting rod 33, the second connecting rod 33 pulls the lower end of the supporting rod 21 to move downwards, thereby enabling the sealing devices 22 respectively installed on the two supporting rods 21 at the upper end and the lower end to move reversely and separate, and facilitating the processing of the film of the plastic bag.

Claims

1. The utility model provides a synchronous sealing device of medicine wrapping bag, includes frame (10), its characterized in that: the upper end and the lower end of the inner side of the rack (10) are respectively provided with two supporting rods (21), the two supporting rods (21) at the upper end and the lower end are respectively provided with a sealing device (22) for sealing the medicine packaging bag, and the sealing devices (22) arranged on the two supporting rods (21) at the upper end are opposite to the sealing devices (22) arranged on the two supporting rods (21) at the lower end; the two ends of the supporting rod (21) are connected with the rack (10) in a vertical sliding mode, longitudinal long holes (11) are formed in the two ends, located on the supporting rod (21), of the rack (10), and extension shafts (212) are arranged at the two ends of the supporting rod (21) and extend outwards to extend out of the long holes (11); a rotating shaft (34) is respectively arranged below the two support rods (21) at the lower end of the rack (10), two ends of the rotating shaft (34) are rotatably connected with the rack (10) and extend out of the rack (10), and two ends of the rotating shaft (34) are fixedly provided with rotating blocks (31); the rotating shaft (34) is fixedly connected with a central hole of the rotating block (31), one end of the rotating block (31) is rotatably connected with an extending shaft (212) of the supporting rod (21) at the upper end through a first connecting rod (32), and the other end of the rotating block is rotatably connected with the extending shaft (212) of the supporting rod (21) at the lower end through a second connecting rod (33); a gear (35) is installed on the rotating shaft (34), and the driving device (40) drives the gear (35) to rotate positively and negatively to drive the two supporting rods (21) at the upper end and the two supporting rods (21) at the lower end to move synchronously in an opening and closing mode.

2. The synchronous heat-sealing device of medicine wrapping bag of claim 1, characterized in that: two opposite sliding grooves (12) are fixedly arranged on two sides of the long hole (11) on the inner side of the rack (10), and rectangular sliding blocks (211) are arranged at two ends of the supporting rod (21) respectively and are clamped in the two opposite sliding grooves (12) in a sliding mode.

3. The synchronous heat-sealing device of medicine wrapping bag of claim 1, characterized in that: the sealing device (22) comprises a bottom plate (221) which is respectively connected with the two support rods (21) at the upper end and the two support rods (21) at the lower end, a buffer cylinder (222) is installed on the bottom plate (221), and a heat sealing knife (223) is installed on a piston rod of the buffer cylinder (222).

4. The synchronous heat-sealing device for the medicine packaging bags according to claim 1 or 3, characterized in that: a sliding rail (213) is arranged on one side of the upper end of each support rod (21) opposite to the corresponding support rod (21) and the lower end of each support rod, sliding blocks (224) are arranged at two ends, connected with the support rods (21), of a bottom plate (221) of the sealing device (22), and the sliding blocks (224) are installed in a matched mode with the sliding rails (213); the sealing devices (22) on the two support rods (21) at the upper end are connected with the sealing devices (22) on the two support rods (21) at the lower end through positioning rods (23), and the positioning rods (23) are fixed with the sealing device (22) at one side and are in sliding connection with the sealing device (22) at the other side; and the sealing devices (22) on the two support rods (21) at the upper end are provided with adjusting devices (24) for adjusting positions.

5. The synchronous heat-sealing device of medicine wrapping bag of claim 4, characterized in that: adjusting device (24) are including transversely installing two in the upper end fixed plate (241) on bracing piece (21) to and fixed mounting screw base (242) on bottom plate (221), lead screw (243) one end and fixed plate (241) rotate and be connected, and the other end rotates with screw base (242) screw-thread fit and is connected, and the one end of being connected with fixed plate (241) is outwards stretched out, and hand wheel (244) are installed to the tip.

6. The synchronous heat-sealing device of medicine wrapping bag of claim 1, characterized in that: the driving device (40) comprises a rack (41) meshed with the gear (35), one end of the rack (41) is connected with a piston rod of a cylinder (44), and the cylinder (44) is fixedly connected with a support (43) arranged on the rack (10); and a guide groove block (42) is arranged at the bottom of the rack (41).

7. The synchronous heat-sealing device for medical packaging bags according to claim 1 or 6, wherein: and a support bearing seat (36) is arranged on the rotating shaft (34) at one side or two sides of the gear (35) and is connected with the frame (10).