Dustproof sealing device for valve port of packaging machine

Abstract

The invention discloses a dustproof sealing device for a valve port of a packaging machine. The dustproof sealing device comprises a weighing frame, a swing frame, a dustproof cover, a retainer plate and an ultrasonic sealing mechanism. The weighing frame comprises a gravity sensor, a lifting chain and a weighing frame body, the gravity sensor is fixed to the top of one side of the rack, the weighing frame body is connected with the gravity sensor through the lifting chain, the swing frame is connected with the weighing frame through a swing driving mechanism, the material supporting plate is fixed to the outer side of the swing frame, and the material supporting plate is fixed to the top of the rack. The dust cover is installed at the position, corresponding to a valve port of the loading machine, above the inner side of the material supporting plate, when the swing frame swings in a reciprocating mode relative to the weighing frame, the valve port of the loading machine is inserted into the dust cover all the time, and the ultrasonic sealing mechanism is installed on the swing frame. By means of the mode, pollution of dust to the surrounding environment during charging can be effectively reduced, charging and bag sealing are integrally completed, and the working efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of packaging equipment, in particular to a dustproof sealing device for a valve port of a packaging machine. Background Art

[0002] After the powder product is produced, it needs to be filled into the corresponding packaging bag in time. The existing packaging equipment generally performs filling and bag sealing in steps when filling powder products. In this way, from the end of filling to the beginning of bag sealing, there will be a period of time when the bag mouth and the loading valve mouth are open due to the action switching of the equipment. Therefore, when the product particle size is small and the specific gravity is light, it will inevitably cause dust pollution to the surrounding area. For this kind of powder pollution, the existing treatment method is generally to install a dust cover above the entire equipment for negative pressure suction. This method of installing the dust cover has high requirements on the suction force of the dust cover, and the suction effect is not good. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a dustproof sealing device for a valve port of a packaging machine, which can improve the dustproof effect and reduce the cadmium pollution of dust to the surrounding environment.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a dustproof sealing device for the valve port of a packaging machine, the dustproof sealing device for the valve port of the packaging machine is installed on the frame of a loader, including: a weighing frame, a swing frame, a dust cover, a supporting plate and an ultrasonic sealing mechanism; the weighing frame includes a gravity sensor, a hanging chain and a weighing frame body, the gravity sensor is fixed to the top of one side of the frame, the weighing frame body and the gravity sensor are connected by a hanging chain, the swing frame and the weighing frame are connected by a swing driving mechanism, the swing driving mechanism can drive the swing frame to translate and swing relative to the weighing frame as a whole, the supporting plate is fixed to the outside of the swing frame, the dust cover is installed on the inner side of the supporting plate above the position corresponding to the valve port of the loader, when the swing frame swings back and forth relative to the weighing frame, the valve port of the loader is always inserted into the dust cover, and the ultrasonic sealing mechanism includes an upper template and a lower template, the upper template is located at The valve port position is above the valve port position, the lower template is located below the valve port position, an ultrasonic welding machine is installed on the upper template, a lower sealing mold is installed on the lower template, the upper template is connected to an upper mold driving structure, the lower template is connected to a lower mold driving structure, the upper mold driving structure and the lower mold driving structure are both installed on the swing frame, when the swing frame is close to the weighing frame, the upper mold driving structure and the lower mold driving structure respectively drive the upper template and the lower template to move away from each other, at this time, the valve port of the loader is located in the space between the upper template and the lower template, when the swing frame is away from the weighing frame to the highest point of the swing, the upper mold driving structure and the lower mold driving structure drive the upper template and the lower template to close each other so that the head of the ultrasonic welding machine is closed with the lower sealing mold, at this time, the valve port of the loader just avoids the closing position, and the movement trajectory of the upper template and the lower template just avoids the installation position of the dust cover.

[0005] In a preferred embodiment of the present invention, the swing drive mechanism includes a plurality of inner swing arms, a plurality of outer swing arms and a first cylinder group, a vertical positioning plate is arranged on the inner side of the swing frame, the inner swing arms are the same length as the outer swing arms, the upper end of each inner swing arm and the outer swing arm is hinged to the upper connecting plate fixed to the top of the weighing frame, and all the hinge points are in the same plane to form an upper hinge surface, the lower end of each inner swing arm and the outer swing arm is hinged to the vertical positioning plate, and all the hinge points are in the same plane to form a lower hinge surface, the upper hinge surface is parallel to the lower hinge surface and is perpendicular to the swing frame body, a cylinder bracket is arranged on the inner side of the weighing frame, the first cylinder group is fixed on the cylinder bracket, and the top of the telescopic rod of the cylinder in the first cylinder group is connected to the vertical positioning plate through a hinge.

[0006] In a preferred embodiment of the present invention, a lower connecting plate is further provided at the lower end of the weighing frame, and the lower connecting plate is horizontally limitedly connected to the bracket.

[0007] In a preferred embodiment of the present invention, holding plates are installed on both sides of the supporting plate.

[0008] In a preferred embodiment of the present invention, a drive mounting frame is also provided on the swing frame, the drive mounting frame is installed above the dust cover, and the upper mold drive structure and the lower mold drive structure are both installed on the drive mounting frame. The upper mold drive mechanism includes a second cylinder group and a welding positioning seat, the welding positioning seat is fixed to the inner side of the swing frame, there are two upper mold plates, which are respectively arranged on both sides of the drive mounting frame, and an ultrasonic welder is installed on each upper mold plate. The second cylinder group includes two synchronous cylinders, and the two synchronous cylinders are symmetrically installed on both sides of the drive mounting frame. One end of each of the two upper mold plates is hinged to the welding positioning seat, and the other end is hinged to the telescopic rod of the synchronous cylinder on the corresponding side. The lower template driving mechanism includes a third cylinder group, a lifting seat and a lower mold base. The lifting seat is installed on the inner side of the swing frame and is located below the welding positioning seat. The lower mold base includes two rocker arms. The two rocker arms have the same specifications and are symmetrically arranged on both sides of the swing frame. The tail ends of the two rocker arms are symmetrically hinged to the lifting seat, and the top ends of the two rocker arms are connected together through the lower template. The third cylinder group includes two synchronous cylinders. The two synchronous cylinders are symmetrically installed on both sides of the driving mounting frame and are staggered with the two synchronous cylinders that constitute the second cylinder group. The telescopic rod ends of the two synchronous cylinders are respectively hinged to the top ends of the two rocker arms, and the position where the lower template is connected to the two rocker arms is just between the hinge positions of the top ends of the two rocker arms.

[0009] The beneficial effects of the present invention are as follows: the present invention is an improvement on the existing powder filling equipment, by installing a rotating swing frame on the frame of the loader, utilizing the swing of the swing frame to realize the switching of the loading action and the bag sealing action, and installing a dust cover corresponding to the valve port position of the loader on the swing frame, it is possible to realize uninterrupted follow-up dust removal during the loading process and the bag sealing process. In this way, on the one hand, the two actions of loading and bag sealing are completed on the same equipment, reducing the material turnover time and significantly improving the filling efficiency. On the other hand, the dust cover follows the dust removal, with high dust removal efficiency, basically no dust pollution in the environment, and small requirements on the external motor power of the dust cover, which significantly reduces the operating cost of the dust cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of a loading state of a preferred embodiment of the present invention;

[0011] Figure 2 is a schematic diagram of the welding preparation state of the illustrated embodiment;

[0012] Figure 3 yes Figure 2 Schematic diagram of the middle swing mechanism structure;

[0013] Figure 4 yes Figure 3 A magnified schematic diagram of the local structure;

[0014] The markings of the components in the accompanying drawings are as follows:

[0015] 1. Loading machine, 2. Frame, 3. Weighing frame, 4. Swing frame, 5. Packing bag, 6. Support plate, 7. Inner swing arm, 8.

[0016] Outer swing arm, 9. Dust cover, 10. First cylinder group, 11. Second cylinder group, 12. Third cylinder group, 13.

[0017] Drive mounting frame, 14. Holding board;

[0018] 301. gravity sensor, 302. lifting chain, 303. upper connecting plate, 304. lower connecting plate, 305. cylinder hanger;

[0019] 401. Vertical positioning plate, 402. Welding positioning seat, 403. Upper template, 404. Ultrasonic welding machine, 405.

[0020] Lifting seat, 406. swing arm. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0022] See also Figures 1 to 4 , the embodiments of the present invention include:

[0023] A packaging machine valve port dustproof sealing device, the packaging machine valve port dustproof sealing device is installed on the frame 2 of the loader 1, including: a weighing frame 3, a swing frame 4, a dust cover 9, a support plate 6 and an ultrasonic sealing mechanism; the weighing frame 3 includes a gravity sensor 301, a hanging chain 302 and a weighing frame body, the gravity sensor 301 is fixed to the top of one side of the frame 2, the weighing frame body and the gravity sensor 301 are connected by a hanging chain 302, the swing frame 4 and the weighing frame 3 are driven by swinging The swing drive mechanism is connected to the swing frame 4 relative to the weighing frame 3, and the swing drive mechanism can drive the swing frame 4 to swing as a whole relative to the weighing frame 3. The support plate 6 is fixed on the outside of the swing frame 4, and the dust cover 9 is installed on the upper inner side of the support plate 6 at a position corresponding to the valve port of the loader 1. When the swing frame 4 swings back and forth relative to the weighing frame 3, the valve port of the loader 1 is always inserted into the dust cover 9. The ultrasonic sealing mechanism includes an upper template 403 and a lower template. The upper template 403 is located above the valve port position. , the lower template is located below the valve port position, an ultrasonic welding machine 404 is installed on the upper template 403, a lower sealing mold is installed on the lower template, the upper template 403 is connected to an upper mold driving structure, and the lower template is connected to a lower mold driving structure. Both the upper mold driving structure and the lower mold driving structure are installed on the swing frame 4. When the swing frame 4 is close to the weighing frame 3, the upper mold driving structure and the lower mold driving structure respectively drive the upper template 403 and the lower template to move away from each other. At this time, the valve port of the loader 1 is located in the space between the upper template 403 and the lower template. When the swing frame 4 moves away from the weighing frame 3 to the highest point of the swing, the upper mold driving structure and the lower mold driving structure drive the upper template 403 and the lower template to close together so that the head of the ultrasonic welding machine 404 is closed with the lower sealing mold. At this time, the valve port of the loader 1 just avoids the closing position, and the movement trajectory of the upper template 403 and the lower template also just avoids the installation position of the dust cover 9.

[0024] The swing drive mechanism includes two inner swing arms 7, two outer swing arms 8 and a first cylinder group 10. A vertical positioning plate 401 is arranged on the inner side of the swing frame 4. The inner swing arms 7 and the outer swing arms 8 have the same length. The upper end of each inner swing arm 7 and the outer swing arm 8 is hinged to the upper connecting plate 303 fixed to the top of the weighing frame 3, and all the hinge points are in the same plane to form an upper hinge surface. The lower end of each inner swing arm 7 and the outer swing arm 8 is hinged to the vertical positioning plate 401, and all the hinge points are in the same plane to form a lower hinge surface. The upper hinge surface is parallel to the lower hinge surface and is perpendicular to the main body of the swing frame 4. A cylinder bracket is arranged on the inner side of the weighing frame 3. The first cylinder group 10 is fixed on the cylinder bracket. The first cylinder group includes two synchronous cylinders. The top ends of the telescopic rods of the two synchronous cylinders are connected to the vertical positioning plate 401 through hinges. In this way, when the telescopic rod of the cylinder in the first cylinder group 10 contracts, the swing frame 4 moves closer to the weighing frame 3. When the telescopic rod of the cylinder in the first cylinder group 10 extends, the swing frame 4 as a whole translates and swings outward away from the weighing frame 3, thereby meeting the position switching requirements of the filling action and the sealing action after the filling is completed.

[0025] The lower end of the weighing frame 3 is also provided with a lower connecting plate 304, and the lower connecting plate 304 is connected to the frame 2 with a horizontal limit. During actual installation, a corresponding horizontal limit seat is provided on the frame 2 at a position corresponding to the lower connecting plate 304. When the lower connecting plate is installed in the horizontal limit seat, a limit is provided in the horizontal direction, but no force is applied in the vertical direction. In this way, the gravity sensor 301 above can obtain accurate data of the entire weighing frame 3, and the whole frame will not shake. In this way, the amount of material in the bag can be accurately weighed immediately during loading to prevent overloading.

[0026] Holding plates 14 are installed on both sides of the supporting plate 6. The purpose of installing the holding plates 14 is to prevent the packaging bag 5 from being unstable when placed on the supporting plate 6, sliding to both sides and falling, thereby improving the safety of loading.

[0027] The swing frame 4 is also provided with a driving mounting frame 13, which is mounted above the dust cover 9, and the upper die driving structure and the lower die driving structure are both mounted on the driving mounting frame 13. The upper die driving mechanism includes a second cylinder group 11 and a welding positioning seat 402, which is fixed to the inner side of the swing frame 4 by an angle steel, and there are two upper templates 403, which are arranged on both sides of the driving mounting frame 13, and an ultrasonic welder 404 is installed on each upper template 403. The second cylinder group 11 includes two synchronous cylinders, which are symmetrically mounted on both sides of the driving mounting frame 13, and one end of each of the two upper templates 403 is hinged to the welding positioning seat 402, and the other end is hinged to the telescopic rod of the synchronous cylinder on the corresponding side. The lower template driving mechanism includes a third cylinder group 12, a lifting seat 405 and a lower mold base 406. The lifting seat 405 is fixedly installed on the inner side of the swing frame 4 by an angle steel and is located directly below the welding positioning seat 402. The lower mold base includes two rocker arms 406. The two rocker arms 406 have the same specifications and are symmetrically arranged on both sides of the swing frame 4. The tail ends of the two rocker arms 406 are symmetrically hinged to the lifting seat 405, and the top ends of the two rocker arms 406 are connected together through the lower template. The third cylinder group 12 also includes two synchronous cylinders, which are symmetrically installed on both sides of the driving mounting frame 13 and staggered with the two synchronous cylinders that constitute the second cylinder group 11. The telescopic rod ends of the two synchronous cylinders are respectively hinged to the top ends of the two rocker arms 406, and the position where the lower template is connected to the two rocker arms 406 is just between the hinged positions at the top ends of the two rocker arms 406. Through the above structure, in actual use, when the swing frame 4 moves closer to the weighing frame 3, the second cylinder group 11 and the third cylinder group 12 act simultaneously to separate the upper template 403 and the lower template. At this time, the valve mouth passes through the dust cover 9 and is inserted into the bag mouth of the packaging bag 5 placed on the supporting plate 6. When the filling is completed, the swing frame 4 moves away from the weighing frame 3, so that the valve mouth is pulled out of the packaging bag 5, but still located in the dust cover 9, and then the second cylinder group 11 and the third cylinder group 12 act simultaneously to close the upper template 403 and the lower template, so that the head of the ultrasonic welder 404 and the lower sealing mold are closed, and the bag mouth sealing welding action of the packaging bag 5 is completed. In this way, the valve mouth is avoided from being touched during sealing, and it is ensured that no dust escapes from the bag mouth and the valve mouth into the surrounding environment during the sealing process, thereby ensuring the cleanliness of the environment and the physical and mental health of the operator.

[0028] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A dustproof sealing device for a valve port of a packaging machine, the dustproof sealing device for a valve port of a packaging machine being installed on a frame of a loading machine, characterized in that: include: A weighing frame, a swing frame, a dust cover, a supporting plate and an ultrasonic sealing mechanism; the weighing frame includes a gravity sensor, a hanging chain and a weighing frame body, the gravity sensor is fixed to the top of one side of the frame, the weighing frame body and the gravity sensor are connected by a hanging chain, the swing frame is connected to the weighing frame by a swing driving mechanism, the swing driving mechanism can drive the swing frame to translate and swing relative to the weighing frame as a whole, the supporting plate is fixed to the outside of the swing frame, the dust cover is installed on the upper inner side of the supporting plate corresponding to the position of the valve port of the loader, when the swing frame swings back and forth relative to the weighing frame, the valve port of the loader is always inserted into the dust cover, the ultrasonic sealing mechanism includes an upper template and a lower template, the upper template is located above the valve port position, the lower template is located below the valve port position, and the upper template is installed There is an ultrasonic welding machine, a lower sealing mold is installed on the lower template, an upper mold driving structure is connected to the upper template, a lower mold driving structure is connected to the lower template, and the upper mold driving structure and the lower mold driving structure are both installed on the swing frame. When the swing frame is close to the weighing frame, the upper mold driving structure and the lower mold driving structure respectively drive the upper template and the lower template to move away from each other. At this time, the valve port of the loader is located in the space between the upper template and the lower template. When the swing frame moves away from the weighing frame to the highest point of the swing, the upper mold driving structure and the lower mold driving structure respectively drive the upper template and the lower template to close together so that the head of the ultrasonic welding machine and the lower sealing mold are closed. At this time, the valve port of the loader just avoids the closing position, and the movement trajectory of the upper template and the lower template just avoids the installation position of the dust cover.

2. The dustproof sealing device for valve port of packaging machine according to claim 1, characterized in that: The swing drive mechanism includes multiple inner swing arms, multiple outer swing arms and a first cylinder group. A vertical positioning plate is arranged on the inner side of the swing frame. The inner swing arms are the same length as the outer swing arms. The upper end of each inner swing arm and outer swing arm is hinged to the upper connecting plate fixed to the top of the weighing frame, and all hinge points are in the same plane to form an upper hinge surface. The lower end of each inner swing arm and outer swing arm is hinged to the vertical positioning plate, and all hinge points are in the same plane to form a lower hinge surface. The upper hinge surface is parallel to the lower hinge surface and is perpendicular to the swing frame body. A cylinder bracket is arranged on the inner side of the weighing frame. The first cylinder group is fixed on the cylinder bracket. The top of the telescopic rod of the cylinder in the first cylinder group is connected to the vertical positioning plate through a hinge.

3. The dustproof sealing device for valve port of packaging machine according to claim 1, characterized in that: A lower connecting plate is also provided at the lower end of the weighing frame, and the lower connecting plate is horizontally limitedly connected to the bracket.

4. The dustproof sealing device for valve port of packaging machine according to claim 1, characterized in that: Holding plates are installed on both sides of the supporting plate.

5. The dustproof sealing device for valve port of packaging machine according to claim 1, characterized in that: A drive mounting frame is also provided on the swing frame. The drive mounting frame is installed above the dust cover. The upper die drive structure and the lower die drive structure are both installed on the drive mounting frame.

6. The dustproof sealing device for valve port of packaging machine according to claim 5, characterized in that: The upper mold driving mechanism includes a second cylinder group and a welding positioning seat, the welding positioning seat is fixed on the inner side of the swing frame, there are two upper mold plates, which are respectively arranged on both sides of the driving mounting frame, and an ultrasonic welding machine is installed on each upper mold plate. The second cylinder group includes two synchronous cylinders, and the two synchronous cylinders are symmetrically installed on both sides of the driving mounting frame. One end of the two upper mold plates is hinged to the welding positioning seat, and the other end is hinged to the telescopic rod of the synchronous cylinder on the corresponding side.

7. The dustproof sealing device for valve port of packaging machine according to claim 6, characterized in that: The lower template driving mechanism includes a third cylinder group, a lifting seat and a lower mold base. The lifting seat is installed on the inner side of the swing frame and is located below the welding positioning seat. The lower mold base includes two rocker arms. The two rocker arms have the same specifications and are symmetrically arranged on both sides of the swing frame. The tail ends of the two rocker arms are symmetrically hinged to the lifting seat, and the top ends of the two rocker arms are connected together through the lower template. The third cylinder group includes two synchronous cylinders. The two synchronous cylinders are symmetrically installed on both sides of the driving mounting frame and are staggered with the two synchronous cylinders that constitute the second cylinder group. The telescopic rod ends of the two synchronous cylinders are respectively hinged to the top ends of the two rocker arms, and the position where the lower template is connected to the two rocker arms is just between the hinge positions of the top ends of the two rocker arms.

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