Sealing device of bag feeding packaging machine

Abstract

The utility model discloses a sealing device of a bag feeding packaging machine, which comprises a turntable and a plurality of supporting clamps which are arranged at the side part of the turntable and are used for clamping packaging bags, a formal sealing device is arranged on a station on one side of the turntable, and a pre-sealing device for detecting clamping opening materials at the tops of the packaging bags is arranged on a station at the front end of the formal sealing device. The pre-sealing device for detecting the clamping opening materials at the tops of the packaging bags is installed on the station in front of the formal sealing device of the rotary disc of the bag feeding packaging machine, the packaging bags with the top sealed openings being detected to be provided with the materials are collected, the situation that the formal sealing device on the next station damages the packaging bags with the materials at the sealing positions is avoided, and the object packaging quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of bag feeding and packaging machines, in particular to a sealing device for bag feeding and packaging machines. Background Art

[0002] When packaging milk shells or milk tablets, a bag-feeding packaging machine is required for packaging. When packaging is performed by bag-feeding packaging, the packaging machine is equipped with processes such as bag taking, bag opening, filling, and sealing. After the filling of the packaging bag is completed, it is moved to the sealing station through the supporting clamp of the turntable of the bag-feeding packaging machine. The formal sealer at the sealing station uses a cylinder to carry a heated splint to hot-melt seal the packaging bag. However, when milk tablets gather at the material opening at the top of the packaging bag, the heated splint of the formal sealer will crush and damage the milk tablets at the material opening of the packaging bag, resulting in a high rate of defective packaging, great waste, and affecting the packaging quality of the milk tablets. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a sealing device for a bag packaging machine.

[0004] The utility model is realized through the following technical solutions:

[0005] A sealing device for a bag packaging machine comprises a turntable and a plurality of supporting clamps installed on its side for clamping packaging bags, a formal sealer is arranged on a station on one side of the turntable, and a pre-sealer for detecting the material clamped at the top of the packaging bag is installed on the front station of the formal sealer.

[0006] Further optionally, the pre-sealer includes two clamps that can flip and clamp the top of the packaging bag, one of the clamps is equipped with a proximity switch, and one side of the clamp is provided with a driving device.

[0007] Further optionally, the drive device includes a support frame, which supports two meshing synchronous gears, the lower parts of the two synchronous gears are respectively fixed to the corresponding ends of the clamping plate, and the upper part of one of the synchronous gears is connected to the cylinder piston rod fixed to the support frame through a tension spring.

[0008] Further optionally, the support frame is fixed to a base at the lower part of the turntable through a support rod, and the formal sealer is installed on the base.

[0009] Further optionally, an induction switch for detecting the packaging bag is installed on the support rod.

[0010] Further optionally, the proximity switch, the supporting fixture, the induction switch and the reversing valve of the cylinder are electrically connected to the controller via a control line.

[0011] Further optionally, a material receiving box is provided at the lower part of the pre-sealer.

[0012] Compared with the existing technology, the beneficial effect of the utility model is as follows: the utility model installs a pre-sealer for detecting the material at the top clamp of the packaging bag at a station before the formal sealer of the bag feeding packaging machine turntable, and collects the packaging bags with material at the top seal, avoiding the formal sealer at the next station from damaging the packaging bags with material at the seal, thereby ensuring the packaging quality of the items. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0014] Figure 2 yes Figure 1 Another perspective diagram of

[0015] Figure 3 yes Figure 2 A schematic enlarged view of the local structure in FIG.

[0016] Figure 4 It is a schematic diagram of the control of the pre-sealer in the present utility;

[0017] In the figure: base 1, turntable 2, supporting fixture 3, formal sealer 4, clamping plate 5, synchronous gear 6, support frame 7, cylinder 8, tension spring 9, proximity switch 10, supporting rod 11, receiving box 12, controller 13, induction switch 14. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0019] like Figure 1 As shown, a sealing device of a bag packaging machine includes a turntable 2 and a plurality of supporting clamps 3 installed on its side for clamping packaging bags, a formal sealer 4 is arranged on a station on one side of the turntable 2, and a pre-sealer for detecting the material clamped at the top of the packaging bag is installed on the front station of the formal sealer 4.

[0020] like Figure 1 As shown, the pre-sealer comprises two clamping plates 5 which can be turned over to clamp the top of the packaging bag, a proximity switch 10 is installed on one of the clamping plates 5, and a driving device is arranged on one side of the clamping plate 5.

[0021] like Figure 2 , 3 As shown, the driving device includes a support frame 7, on which two meshing synchronous gears 6 are supported. The lower parts of the two synchronous gears 6 are respectively fixed to the ends of the corresponding clamping plates 5. The upper part of one of the synchronous gears 6 is connected to the piston rod of the cylinder 8 fixed to the support frame 7 through a tension spring 9. The cushioning of the tension spring 9 prevents the clamping plate 5 from directly crushing the material at the top seal of the packaging bag, thereby ensuring the integrity of the material.

[0022] like Figure 1 As shown, the support frame 7 is fixed on the base 1 at the lower part of the turntable 2 through the support rod 11, and the formal sealer 4 is installed on the base 1.

[0023] like Figure 1 As shown, a sensing switch 14 for detecting packaging bags is installed on the support rod 11.

[0024] like Figure 4 As shown, the proximity switch 10, the supporting fixture 3, the induction switch 14 and the reversing valve of the cylinder 8 are electrically connected to the controller 13 via a control line.

[0025] like Figure 2 As shown, a material receiving box 12 is provided at the lower part of the pre-sealer, and the material receiving box 12 is used to collect packaging bags with materials at the top seal.

[0026] The implementation principle of a sealing device for a bag packaging machine in the embodiment of the present application is as follows:

[0027] When the supporting fixture 3 on the turntable 2 clamps the packaging bag containing the milk slices and rotates to the station where the pre-sealer is installed, the induction switch 14 senses the packaging bag and transmits a signal to the controller 13. The controller 13 controls the cylinder 8 to contract. The piston rod of the cylinder 8 pulls the synchronous gear 6 of the driving device to rotate through the tension spring 9. The rotation of the two meshing synchronous gears 6 drives the clamping plate 5 to turn synchronously, and the packaging bag clamped by the supporting fixture 3 of the station is pre-clamped.

[0028] When there is milk slice material at the upper seal of the packaging bag, the two clamps 5 will clamp the milk slice at the upper seal of the packaging bag, and there will be a 3-10mm gap between the two clamps 5. At the same time, the proximity switch 10 on one clamp 5 will detect the gap between the clamps 5 and the other clamp 5 (the clamps 5 are made of metal to ensure the detection accuracy of the proximity switch 10). When the detected data is greater than the 2mm value set by the controller 13, the controller 13 simultaneously controls the support fixture 3 on the station and the reversing valve of the cylinder 8 to open and push the piston rod out, so as to loosen the two clamps 5 and the support fixture 3. In this way, the packaging bag with material at the top seal will fall to the receiving box 12 for collection, avoiding damage to the packaging bag with material at the seal by the formal sealer 4 on the next station, thereby ensuring the packaging quality of the goods;

[0029] When the controller 13 detects that the distance between the splints 5 is less than 3 mm, it means that there is no milk tablet material at the top seal of the packaging bag. The controller 13 controls the cylinder 8 to loosen the splint 5, and the packaging bag on the support fixture 3 of this station rotates to the formal sealer 4 of the next station for hot melt sealing.

[0030] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sealing device for a bag-feeding packaging machine, comprising a turntable (2) and a plurality of supporting clamps (3) mounted on its side for clamping packaging bags, a formal sealer (4) is arranged at a station on one side of the turntable (2), and is characterized in that: A pre-sealer for detecting the material clamped at the top of the packaging bag is installed at the front station of the formal sealer (4).

2. The sealing device of the bag-feeding packaging machine according to claim 1, characterized in that: The pre-sealer comprises two clamping plates (5) for clamping the top of the packaging bag and capable of being turned over and clamped, wherein a proximity switch (10) is installed on one of the clamping plates (5), and a driving device is arranged on one side of the clamping plate (5).

3. The sealing device of the bag-feeding packaging machine according to claim 2, characterized in that: The driving device comprises a support frame (7), on which two meshing synchronous gears (6) are supported, the lower parts of the two synchronous gears (6) being respectively fixed to the ends of corresponding clamping plates (5), and the upper part of one of the synchronous gears (6) being connected to the piston rod of a cylinder (8) fixed to the support frame (7) via a tension spring (9).

4. The sealing device of the bag-feeding packaging machine according to claim 3, characterized in that: The support frame (7) is fixed to a base (1) at the lower part of the turntable (2) via a support rod (11), and the formal sealer (4) is installed on the base (1).

5. The sealing device of the bag-feeding packaging machine according to claim 4, characterized in that: The support rod (11) is provided with an induction switch (14) for detecting the packaging bag.

6. The sealing device of the bag-feeding packaging machine according to claim 2, characterized in that: The proximity switch (10), the supporting fixture (3), the induction switch (14) and the reversing valve of the cylinder (8) are electrically connected to the controller (13) via a control line.

7. The sealing device of the bag-feeding packaging machine according to claim 2, characterized in that: A material receiving box (12) is arranged at the lower part of the pre-sealer.

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