A bag mouth clamping and shaping sealing mechanism for a packaging bag

Abstract

The application discloses a packaging bag mouth clamping, shaping and sealing mechanism, which comprises a mounting piece, a sealing mechanism, a shaping mechanism and a bag clamping mechanism. The first sliding seat and the second sliding seat are slidably arranged on the mounting piece and are connected through elastic pieces. The shaping plate and the guide plate are fixedly connected to the first sliding seat. The clamping guide groove is formed in the shaping plate, and the sealing guide groove is formed in the guide plate. The bag clamping mechanism is arranged below the opening end of the shaping groove. When the first sliding seat slides, the bag clamping mechanism can be driven through the clamping guide groove to clamp the packaging bag. The shaping mechanism comprises the shaping groove formed in the shaping plate. When the first sliding seat slides, the packaging bag mouth can be combed and shaped through the shaping groove. The sealing mechanism comprises the heating strip and the adhesive strip. When the first sliding seat moves towards the second sliding seat, the heating strip can be driven to move towards the adhesive strip through the sealing guide groove to seal the packaging bag. The mechanism can simultaneously complete the clamping, shaping and sealing actions of the packaging bag in one time, realizes continuous and high-speed production and has high reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the packaging technical field, specifically to a packaging bag mouth clamping, shaping and sealing mechanism. BACKGROUND

[0002] Many products before leaving the factory, will use packaging bags for packaging, such as bagged medicine, tea, etc. In the production process, these bagged products need to be sealed after filling, and because the bag opening is stretched and irregular during filling, if directly heat sealed, the bag opening is prone to wrinkles, resulting in poor heat sealing effect and unattractive sealing, so it is necessary to shape the bag opening before sealing.

[0003] In the prior art, in the automatic packaging equipment with bag opening shaping function, the shaping mechanism and the sealing mechanism are generally independently arranged, and the process is still complex, the control of the shaping mechanism and the sealing mechanism is complicated, and the complex action process also affects the production rhythm, which is not conducive to continuous high-speed production. The shaping method of the prior art by clamping and pulling the bag opening has a complex structure and occupies a large space, and is usually only suitable for single-row packaging bag filling production form.

[0004] In view of the above problems, we have developed a packaging bag mouth shaping and sealing device (application number: 202310965306X), which can complete the shaping and sealing action at one time, which is conducive to realizing continuous high-speed production. Since the device is driven by the translation of the shaping groove, the bag opening of the packaging bag is inserted into the shaping groove to complete the shaping of the bag opening by the shaping groove. In the actual shaping process, if the position of the packaging bag (bag opening) is not effectively fixed, the packaging bag may move together when the shaping groove is translated, resulting in that the shaping process cannot be completed smoothly. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a packaging bag mouth clamping, shaping and sealing mechanism, which can complete the clamping, shaping and sealing of the bag opening of the packaging bag at one time, realize continuous high-speed production and have high reliability.

[0006] The purpose of the present application is achieved by the following technical solutions:

[0007] A packaging bag mouth clamping shaping sealing mechanism, comprising a mounting piece, an elastic piece, a driving mechanism, a sealing mechanism, a shaping mechanism and a bag clamping mechanism; The first sliding seat and the second sliding seat are sequentially and slidably arranged on the mounting piece, the sliding directions of the first sliding seat and the second sliding seat are the same, the first sliding seat is connected with the second sliding seat through the elastic piece, and the driving mechanism is used for driving the first sliding seat to slide; The shaping mechanism comprises a shaping groove, the first sliding seat is fixedly connected with a shaping plate, the shaping groove is arranged on the shaping plate, the shaping groove is arranged along the sliding direction of the first sliding seat, and an end of the shaping groove is open towards the second sliding seat; The bag clamping mechanism is arranged below the open end of the shaping groove, the bag clamping mechanism comprises a clamping plate A and a clamping plate B, one end of the clamping plate A and one end of the clamping plate B are rotatably connected with the mounting piece, a sliding block A is fixedly arranged on the clamping plate A, a sliding block B is fixedly arranged on the clamping plate B, clamping guide grooves A and clamping guide grooves B are symmetrically arranged on the shaping plate on the two sides of the shaping groove, the sliding block A and the sliding block B are slidably arranged in the clamping guide grooves A and the clamping guide grooves B respectively, and when the first sliding seat slides towards the bag clamping mechanism, the end of the clamping plate A away from the mounting piece and the end of the clamping plate B away from the mounting piece can be close to each other; The sealing mechanism comprises a heating strip, a rubber strip, a lever and a sealing guide groove, the rubber strip is fixedly arranged on the second sliding seat, one end of the heating strip is rotatably connected with the second sliding seat, one end of the lever is fixedly connected with the other end of the heating strip, a sealing area is formed between the heating strip and the rubber strip, the sealing area is arranged directly above the shaping groove, a guide plate is further fixedly arranged on the first sliding seat, the sealing guide groove is arranged on the guide plate, and one end of the lever away from the heating strip is slidably arranged in the sealing guide groove; When the first sliding seat approaches the second sliding seat, the end of the heating strip, on which the lever is arranged, can be brought close to the rubber strip through the lever.

[0008] Further, a limiting stop, a first position sensor and a second position sensor are fixedly arranged on the mounting piece, the limiting stop is matched with the second sliding seat, and the first position sensor and the second position sensor are matched with the first sliding seat.

[0009] Specifically, the mounting piece comprises a top sealing fixed plate, two parallel translation optical axes are fixedly arranged on the top sealing fixed plate, and the two ends of the first sliding seat are slidably connected with the two translation optical axes through linear bearings respectively.

[0010] Specifically, a limiting block is fixedly connected to the first sliding seat, and a limiting groove is arranged on the second sliding seat, and the limiting block is slidably arranged in the limiting groove.

[0011] Specific, the elastic member is selected with spring, the spring is arranged in the limiting groove, one end of the spring is fixedly connected with the limiting block, the other end of the spring is fixedly connected with the second sliding base.

[0012] Specific, the driving mechanism includes stepper motor, driving pulley, driven pulley and belt, the driving pulley and driven pulley are rotatably arranged on the mounting piece, the driving pulley and driven pulley are drivingly connected through the belt, the stepper motor is fixedly arranged on the mounting piece, the driving pulley is fixedly sleeved on the output shaft of the stepper motor, the first sliding base is fixedly connected with the belt.

[0013] Further, the shaping mechanism, the bag clamping mechanism and the sealing mechanism are provided with two, two the shaping mechanism, two the bag clamping mechanism and two the sealing mechanism are symmetrically arranged along the midline of the first sliding base.

[0014] The beneficial effects of the present application are:

[0015] The bag mouth clamping and shaping sealing mechanism is slidably provided with a first sliding base and a second sliding base, the first sliding base is connected with the second sliding base through an elastic member, the first sliding base can drive the second sliding base to slide together, when the second sliding base is limited by the block, the first sliding base can compress the elastic member to move to the second sliding base. The first sliding base is connected with a shaping plate and a guide plate, a bag clamping mechanism is arranged, the bag clamping mechanism includes a clamping plate A and a clamping plate B, a clamping guide groove A and a clamping guide groove B are arranged on the shaping plate, when the first sliding base drives the shaping plate to move to the conveying line, the clamping guide groove A and the clamping guide groove B can drive the clamping plate A and the clamping plate B to move to the bag clamping and fixing; the shaping plate is provided with a shaping groove, the bag mouth of the clamping and fixed bag can be combed and shaped during the continuous sliding of the first sliding base; the second sliding base is fixedly provided with a rubber strip and rotatably provided with a heating strip, a sealing guide groove is arranged on the guide plate, when the first sliding base moves to the second sliding base, the sealing guide groove can drive the heating strip to rotate to the rubber strip to complete the sealing action of the bag. Thus, during the movement of the first sliding base to the conveying line by one driving, the clamping and fixing, shaping and sealing actions of the bag can be completed in turn, after the sealing is completed, the first sliding base only needs to slide reversely to return to the retreat state for the next shaping and sealing, the control of the clamping, shaping and sealing actions is simple, the actions are continuous, the production rhythm is more compact, which is beneficial to realize continuous high-speed production; meanwhile, the overall structure of the mechanism is relatively simple, the occupied space is small, multiple shaping mechanisms, bag clamping mechanisms and sealing mechanisms can be arranged in parallel to meet the shaping and sealing requirements of multiple rows of bags during filling and conveying, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a packaging bag opening clamping, shaping and sealing mechanism in a retracted state according to the present invention;

[0017] Figure 2 This is a structural schematic diagram of a packaging bag opening clamping, shaping and sealing mechanism in a bag clamping state according to the present invention;

[0018] Figure 3 This is a structural schematic diagram of a bag opening clamping, shaping and sealing mechanism of a packaging bag in a bag opening shaping state according to the present invention;

[0019] Figure 4 This is a structural schematic diagram of a packaging bag opening clamping, shaping and sealing mechanism in a sealed state according to the present invention;

[0020] Figure 5 This is a structural schematic diagram of a mounting member and a first slide seat in a packaging bag opening clamping, shaping and sealing mechanism of the present invention;

[0021] Figure 6 This is a structural schematic diagram of a bag clamping mechanism in a bag opening clamping, shaping and sealing mechanism for a packaging bag according to the present invention;

[0022] Figure 7 This is a structural schematic diagram of a second slide and a sealing mechanism in a packaging bag opening clamping, shaping and sealing mechanism of the present invention;

[0023] In the figure, 1-first slide, 2-second slide, 3-shaping groove, 4-shaping plate, 5-clamp A, 6-clamp B, 7-slider A, 8-slider B, 9-clamping guide groove A, 10-clamping guide groove B, 11-heating strip, 12-rubber strip, 13-shift rod, 14-sealing guide groove, 15-guide plate, 16-limit stop, 17-first position sensor, 18-second position sensor, 19-top sealing fixing plate, 20-translational optical axis, 21-limit block, 22-limit groove, 23-spring, 24-stepping motor, 25-driven pulley, 26-belt. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0025] like Figures 1 to 7 As shown, a packaging bag bag opening clamping, shaping and sealing mechanism includes a mounting part, an elastic part, a driving mechanism, a sealing mechanism, a shaping mechanism and a bag clamping mechanism.

[0026] A first slide 1 and a second slide 2 are slidably mounted on the mounting member. The first slide 1 and the second slide 2 slide in the same direction and are connected by an elastic member. A drive mechanism is used to drive the first slide 1 to slide. Because the first slide 1 and the second slide 2 are connected by the elastic member, the elastic member can drive the second slide 2 to slide together during the sliding of the first slide 1. When there is an obstruction at the front end of the second slide 2, the first slide 1 can compress the elastic member to move the second slide 2 toward the first slide 1.

[0027] The above-mentioned shaping mechanism includes a shaping groove 3, such as Figure 5 As shown, during implementation, a shaping plate 4 is fixedly connected to the first slide 1 , and the shaping groove 3 is opened on the shaping plate 4 . The shaping groove 3 is arranged along the sliding direction of the first slide 1 , and the shaping groove 3 opens toward one end of the second slide 2 .

[0028] The structure of the bag clamping mechanism is as follows: Figure 6 As shown, it is arranged below the open end of the shaping groove 3. The bag clamping mechanism includes a clamping plate A5 and a clamping plate B6. One end of the clamping plate A5 and one end of the clamping plate B6 are rotatably connected to the mounting member. A slider A7 is fixed on the clamping plate A5, and a slider B8 is fixed on the clamping plate B6. Figure 5 As shown, clamping guide grooves A9 and B10 are symmetrically defined on the shaping plate 4 on either side of the shaping groove 3. Sliders A7 and B8 are slidably disposed within the clamping guide grooves A9 and B10, respectively. These clamping guide grooves A9 and B10 are linear grooves approaching the first slide 1 and diagonally extending outward toward the second slide 2. When the first slide 1 slides toward the bag clamping mechanism, the end of the clamping plate A5 away from the mounting member and the end of the clamping plate B6 away from the mounting member are brought closer together.

[0029] The structure of the sealing mechanism is as follows: Figure 7 As shown, it includes a heating strip 11, a rubber strip 12, a lever 13 and a sealing guide groove 14. The rubber strip 12 is fixedly arranged on the second slide 2. One end of the heating strip 11 is rotatably connected to the second slide 2. One end of the lever 13 is fixedly connected to the other end of the heating strip 11. A sealing area is formed between the heating strip 11 and the rubber strip 12. The sealing area is arranged just above the shaping groove 3. In implementation, as Figure 5 As shown, a guide plate 15 is fixedly mounted on the first slide 1, and the sealing guide groove 14 is formed on the guide plate 15. The end of the lever 13 away from the heating strip 11 is slidably mounted in the sealing guide groove 14. The sealing guide groove 14 is arc-shaped, so that when the first slide 1 moves toward the second slide 2, the lever 13 can drive the end of the heating strip 11 where the lever 13 is mounted to move toward the rubber strip 12.

[0030] The bag mouth clamping and shaping sealing mechanism of the packaging bag is installed beside the packaging bag conveying line by the installing part during use, and one end of the mechanism extends above the conveying line. The shaping groove 3 is arranged along the opening length direction of the packaging bag at the corresponding position on the conveying line during installation, and the opening end of the shaping groove 3 is opposite to the direction of the packaging bag. The opening edge of the packaging bag can be clamped into the shaping groove 3 when the first sliding seat 1 slides to the conveying line direction. The working process is shown in Figures 1 to 4 .

[0031] In the retracted state shown in Figure 1 , the first sliding seat 1 is located at the left end of the entire device, the second sliding seat 2 is located at the middle of the device to avoid the packaging bag conveying line, and the packaging bag can be smoothly conveyed forward. At this time, the sliding block A7 and the sliding block B8 are respectively located in the inclined grooves of the clamping guide grooves A9 and B10 which are opened outward, so that the clamping plates A5 and B6 are in an open state. One end of the lever 13 is located in the outward opening section of the sealing guide groove 14, so that the heating strip 11 is inclined outward, that is, the sealing area is in an open state. When it is necessary to shape and seal the packaging bag, the conveying line stops running, the driving mechanism drives the first sliding seat 1 to slide to the right, and under the pushing of the elastic member, the second sliding seat 2 slides to the right. In this process, as shown in Figure 2 , the sliding block A7 and the sliding block B8 respectively slide to the straight grooves of the clamping guide grooves A9 and B10. At this time, the clamping plates A5 and B6 are closed to each other, and can effectively clamp the side edges of the packaging bag between the clamping plates A5 and B6. Then the driving mechanism continues to drive the first sliding seat 1 and pushes the second sliding seat 2 to slide to the right. When passing the position of the packaging bag, the opening edge of the packaging bag is clamped into the shaping groove 3. In the process of continuous sliding of the first sliding seat 1, the shaping groove 3 combs the opening edge of the packaging bag (since the bag clamping mechanism clamps and fixes the side edges of the packaging bag at this time, the bag mouth shaping can be directly completed in the moving process of the shaping groove 3). Until the second sliding seat 2 slides to the right end of the device and is limited (as shown in Figure 3 ), that is, the bag mouth shaping is completed. Then the driving mechanism continues to drive the first sliding seat 1 to move to the right, as shown in Figure 4 , the elastic member is compressed, the first sliding seat 1 approaches the second sliding seat 2, and at this time, under the guidance of the sealing guide groove 14, the lever 13 drives the heating strip 11 to rotate to the direction of approaching the rubber strip 12, until the bag mouth of the packaging bag is clamped between the heating strip 11 and the rubber strip 12 to complete the sealing. After the sealing is completed, the driving mechanism reverses the operation to drive the first sliding seat 1 to slide to the left. In the sliding process, the sealing area is opened, the clamping plates A5 and B6 are opened to release the packaging bag, and in the subsequent continuous sliding process, the second sliding seat 2 is moved to the left together under the pulling of the elastic member. Both return to the retracted state shown in Figure 1 , and the conveying line continues to run, thereby completing a shaping and sealing action.

[0032] From the above working process can be seen, bag clamping, shaping and sealing action only need to drive mechanism to drive the first slide 1 to the direction of the conveying line sliding can be completed continuously, complete sealing reverse drive first slide 1 can be returned to the device, its control is simple, continuous and reliable action, conducive to ensure the production rhythm, realize continuous high speed production.

[0033] Further, the mounting member is fixedly provided with a limit stop 16, a first position sensor 17 and a second position sensor 18. The limit stop 8 is matched with the second slide 2. When the second slide 2 moves to the right and abuts against the limit stop 8, the bag mouth edge is completely clamped into the shaping groove 3 to complete the shaping. At this time, the limit stop 8 blocks and limits the second slide 2. In specific implementation, the limit stop 8 can be selected from an anti-collision sleeve, an anti-collision pad and the like to reduce the rigid impact of the second slide 2 in the high-speed production process. The first position sensor 17 and the second position sensor 18 are matched with the first slide 1. Since the bag clamping action, the shaping action and the sealing action are all driven or transmitted by the sliding of the first slide 1, the travel position of the first slide 1 can be accurately controlled by the first position sensor 17 and the second position sensor 18. The control is also extremely simple.

[0034] In specific implementation:

[0035] As shown in Figure 5 , the mounting member includes a top sealing fixed plate 19. Two parallel translation optical axes 20 are fixedly arranged on the top sealing fixed plate 19. The two ends of the first slide 1 are respectively connected with the two translation optical axes 20 through linear bearings to slide. The two ends of the second slide 2 are respectively connected with the two translation optical axes 20 through linear bearings to slide, so as to keep the sliding process of the first slide 1 and the second slide 2 smooth and stable.

[0036] As shown in Figure 5 , Figure 7 , a limit block 21 is fixedly connected to the first slide 1. A limit groove 22 is formed in the second slide. The limit block 21 is slidably arranged in the limit groove 22. The elastic member is selected from a spring 23. The spring 23 is arranged in the limit groove 22. One end of the spring 23 is fixedly connected with the limit block 21. The other end of the spring 23 is fixedly connected with the second slide 2.

[0037] As shown in Figure 5 , the driving mechanism includes a stepping motor 24, a driving pulley, a driven pulley 25 and a belt 26. The driving pulley and the driven pulley 25 are rotatably arranged on the mounting member. The driving pulley and the driven pulley 25 are transmissionally connected through the belt 26. The stepping motor 24 is fixedly arranged on the mounting member. The driving pulley is fixedly sleeved on the output shaft of the stepping motor 24. The first slide 1 is fixedly connected with the belt. The first slide 1 can slide leftward and rightward through the belt 26 by forward and reverse rotation of the stepping motor 24.

[0038] Further, in the implementation, the shaping mechanism, the bag clamping mechanism and the sealing mechanism are all provided with two, two shaping mechanisms, two sealing mechanisms and two bag clamping mechanisms are symmetrically arranged along the center line of the first sliding seat 1, so that the shaping and sealing of two packaging bags can be completed at the same time in one action, and the production efficiency is further improved. It should be noted that the arrangement of the shaping mechanism, the bag clamping mechanism and the sealing mechanism as two groups is only a preferred embodiment suitable for the simultaneous conveying, shaping and sealing of double-row packaging bags. It should be understood that if necessary, several can be arranged side by side to meet the needs of the shaping and sealing of multi-row packaging bags during simultaneous filling and conveying, thereby improving the production efficiency.

[0039] The above is only the preferred embodiment of the present application, and it should be understood that the present application is not limited to the form disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein by the above-mentioned teaching or related technical or knowledge. Any modification and change made by the person skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims attached to the present application.

Claims

1. A packaging bag mouth clamping, shaping and sealing mechanism, characterized in that: It includes a mounting part, an elastic part, a driving mechanism, a sealing mechanism, a shaping mechanism and a bag clamping mechanism; The mounting member is slidably provided with a first slide and a second slide in sequence, the first slide and the second slide have the same sliding direction, the first slide and the second slide are connected by the elastic member, and the driving mechanism is used to drive the first slide to slide; The shaping mechanism includes a shaping groove, a shaping plate is fixedly connected to the first slide, the shaping groove is provided on the shaping plate, the shaping groove is arranged along the sliding direction of the first slide, and the shaping groove opens toward one end of the second slide; The bag clamping mechanism is arranged below the open end of the shaping groove, and the bag clamping mechanism includes a clamping plate A and a clamping plate B, one end of the clamping plate A and one end of the clamping plate B are rotatably connected to the mounting member, a slider A is fixedly provided on the clamping plate A, and a slider B is fixedly provided on the clamping plate B, and a clamping guide groove A and a clamping guide groove B are symmetrically opened on the shaping plate on both sides of the shaping groove, and the slider A and the slider B are respectively slidably arranged in the clamping guide groove A and the clamping guide groove B, and when the first slide seat slides toward the bag clamping mechanism, it can drive the end of the clamping plate A away from the mounting member and the end of the clamping plate B away from the mounting member to move closer to each other; The sealing mechanism includes a heating strip, a rubber strip, a shift rod and a sealing guide groove, the rubber strip is fixedly arranged on the second slide, one end of the heating strip is rotatably connected to the second slide, one end of the shift rod is fixedly connected to the other end of the heating strip, a sealing area is formed between the heating strip and the rubber strip, and the sealing area is arranged just above the shaping groove; a guide plate is also fixedly arranged on the first slide, the sealing guide groove is opened on the guide plate, and the end of the shift rod away from the heating strip can be slidably arranged in the sealing guide groove, and when the first slide moves closer to the second slide, the shift rod can drive the end of the heating strip on which the shift rod is installed to move closer to the rubber strip.

2. A packaging bag opening clamping, shaping and sealing mechanism according to claim 1, characterized in that: A limit stop, a first position sensor and a second position sensor are fixedly provided on the mounting member. The limit stop is adapted to the second slide, and the first position sensor and the second position sensor are adapted to the first slide.

3. The packaging bag opening clamping, shaping and sealing mechanism according to claim 1, characterized in that: The mounting member includes a top seal fixing plate, on which two parallel translation optical axes are fixedly arranged, the two ends of the first slide are respectively slidably connected to the two translation optical axes through linear bearings, and the two ends of the second slide are respectively slidably connected to the two translation optical axes through linear bearings.

4. The packaging bag opening clamping, shaping and sealing mechanism according to claim 1, characterized in that: A limiting block is fixedly connected to the first slide, and a limiting groove is provided on the second slide. The limiting block is slidably arranged in the limiting groove.

5. The packaging bag opening clamping, shaping and sealing mechanism according to claim 4, characterized in that: The elastic member is a spring, which is arranged in the limiting groove. One end of the spring is fixedly connected to the limiting block, and the other end of the spring is fixedly connected to the second slide seat.

6. The packaging bag opening clamping, shaping and sealing mechanism according to claim 1, characterized in that: The driving mechanism includes a stepper motor, a driving pulley, a driven pulley and a belt. The driving pulley and the driven pulley are rotatably arranged on the mounting member. The driving pulley and the driven pulley are connected through the belt transmission. The stepper motor is fixedly arranged on the mounting member. The driving pulley is fixedly sleeved on the output shaft of the stepper motor. The first slide is fixedly connected to the belt.

7. A packaging bag opening clamping, shaping and sealing mechanism according to any one of claims 1 to 6, characterized in that: There are two of each of the shaping mechanism, the bag clamping mechanism and the sealing mechanism, and the two shaping mechanisms, the two bag clamping mechanisms and the two sealing mechanisms are symmetrically arranged along the center line of the first slide seat.

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