Automatic sealing device for bag body

Abstract

The utility model relates to the technical field of bag body sealing, and aims to solve the problem that an existing heat sealing device is lack of an arrangement structure before heat sealing, so that a bag body cannot be uniformly sealed. The utility model provides an automatic sealing device for a bag body, which comprises a barrel body, a rack and a pressure plate, and the pressure plate is hung at the top of an opening of the barrel body; one end, far away from the barrel body, of the pressure plate is telescopically connected with the rack; a first film clamping assembly, a second film clamping assembly and a pair of film supporting assemblies are further included; the two ends of the pressing disc are each provided with a first through opening allowing the film supporting assembly to penetrate in a reciprocating mode. The film supporting assembly is connected with a sliding assembly through a lifting air cylinder. The sliding assembly is connected with the rack; the first film clamping assembly and the second film clamping assembly are connected to the two ends, away from the pair of film supporting assemblies, of the pressing disc in a telescopic mode. According to the automatic sealing device for the bag body, the bag opening can be evenly sealed, time and labor are saved, and the sealing effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to bag body mouth seal technical field, specifically, relate to a kind of automatic sealing device for bag body. BACKGROUND

[0002] Bag mouth heat sealing device is a kind of equipment commonly used in packaging industry, its main function is to seal the bag mouth of plastic packaging bag by heating and applying pressure, i.e. after heating element contacts bag mouth, plastic material begins to soften, at this time, the pressure mechanism (such as pressure roller or pressure plate) in the device applies appropriate pressure, and the softened plastic material is pressed together to form a seal.

[0003] In the prior art, a pair of hot-pressing plates or a pair of cutter heads are usually used for pressing, such as the patent with publication number CN220076883U, which discloses a pneumatic bag mouth heat sealing device, specifically, a pair of air cylinders respectively make the upper pressing plate contact the lower pressing plate, and the stress of each part between the upper pressing plate and the lower pressing plate is more evenly distributed, so that each part of the bag mouth is firmly heat sealed.

[0004] For example, the patent with publication number CN216943848U discloses a ton bag mouth virtual heat sealing device, specifically, the moving die head approaches the static die head under the drive of the air cylinder, and then the upper ironing cutter and the lower ironing cutter are in contact, thereby completing the virtual heat sealing of the ton bag mouth.

[0005] However, the heat sealing device provided by the prior art cannot directly heat seal the bag mouth, and lacks a bag mouth arrangement device, especially for the case of heat sealing the inner and outer bag mouths respectively after the bag body is received and leveled by a barrel, the bag mouth of the bag body needs to be pulled to a horizontal state in advance before heat sealing.

[0006] Based on the above description, there is an urgent need for an automatic sealing device for bag body that can arrange and accurately seal in advance. UTILITY MODEL CONTENT

[0007] The utility model aims to provide an automatic sealing device for bag body, which aims to solve the technical problem that the existing heat sealing device lacks an arrangement structure before heat sealing, thereby causing uneven sealing of the bag body.

[0008] The embodiments of the utility model are implemented by the following technical solutions:

[0009] An automatic sealing device for bags includes a barrel, a frame, and a pressure plate. The pressure plate is suspended from the top of the opening of the barrel. The end of the pressure plate away from the barrel is telescopically connected to the frame. The device also includes a first film clamping assembly, a second film clamping assembly, and a pair of film supporting assemblies. Both ends of the pressure plate have first openings for the film supporting assemblies to reciprocate through. The film supporting assemblies are connected to a sliding assembly via a lifting cylinder. The sliding assembly is connected to the frame. The first and second film clamping assemblies are telescopically connected to the ends of the pressure plate away from the pair of film supporting assemblies.

[0010] Preferably, the assembly also includes a pair of uprights; both ends of the pair of uprights are connected by multiple sliding rods; both ends of the first film clamping assembly and both ends of the second film clamping assembly are connected to the sliding rods by multiple sliding cylinders; a telescopic cylinder is provided at the end of the second film clamping assembly away from the first film clamping assembly; the telescopic cylinder is connected to the top of the uprights.

[0011] Preferably, the first film clamping assembly includes a first film clamping plate and a first pressure film plate; the second film clamping assembly includes a second film clamping plate, a second pressure film plate, and a heating strip; the first pressure film plate and the second pressure film plate are disposed opposite each other on both sides of the pressure plate; the first pressure film plate is disposed on the side of the first film clamping plate closer to the second pressure film plate; the second pressure film plate is disposed on the second film clamping plate; the heating strip is disposed on the side of the second pressure film plate closer to the first pressure film plate; the telescopic cylinder is connected to the end of the second film clamping plate away from the first film clamping plate.

[0012] Preferably, the second pressing plate is connected to the end of the second clamping plate away from the heating strip via multiple heat-sealing cylinders.

[0013] Preferably, the end of the first pressure plate away from the heating strip is provided with multiple buffer components.

[0014] Preferably, the pressure plate has a second opening in the middle; a pair of first openings are disposed opposite each other at both ends of the second opening; the frame extends toward the second opening and is provided with a sorting plate; the sorting plate is connected to the frame via a telescopic assembly.

[0015] Preferably, the membrane support assembly includes a membrane support vertical plate and an arc-shaped barb; one end of the membrane support vertical plate is connected to the sliding assembly; the other end of the membrane support vertical plate extends toward the outer wall of the barrel and is provided with the arc-shaped barb.

[0016] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0017] The automatic sealing device for bags provided by this utility model first sends the film-supporting assembly to the top of the barrel through the sliding component before pressing and sealing the bag, and embeds it into the first opening. Then, the pressure plate is lowered into the barrel through the telescopic adjustment plate, thereby pressing the previously heat-sealed bag into the inner cavity of the barrel. Then, the pair of film-supporting assemblies are raised and lowered through the lifting cylinder, so that they extend into the inside of the bag from the bag opening. Then, the film-supporting assembly is pushed out of the first opening through the sliding component, and the bag is continuously pushed in the horizontal direction. The pair of film-supporting assemblies move in the opposite direction, thereby flattening the bag opening end and completing the sorting. Finally, the first and second film clamping assemblies are telescopically adjusted to complete the uniform heat sealing of the bag opening. Attached Figure Description

[0018] Figure 1 This is the front view of the present invention;

[0019] Figure 2 for Figure 1 Enlarged schematic diagram of local structure A in the middle;

[0020] Figure 3 This is a top view of the present invention.

[0021] Icons: 1-Barrel, 2-Frame, 3-Pressure plate, 31-First port, 32-Second port, 4-First film clamping assembly, 41-First film clamping plate, 42-First pressure plate, 5-Second film clamping assembly, 51-Second film clamping plate, 52-Second pressure plate, 53-Heating strip, 6-Film support assembly, 61-Film support vertical plate, 62-Arc-shaped barb, 7-Upright frame, 8-Slide rod, 9-Slide cylinder, 10-Telescopic cylinder, 11-Heat sealing cylinder, 12-Buffer assembly, 13-Sliding assembly. Detailed Implementation

[0022] The specific implementation method is described below with reference to the accompanying drawings.

[0023] Example 1

[0024] Please see Figures 1 to 3 The present invention provides the following technical solution: an automatic sealing device for bags, which is suitable for heat sealing after bag preparation.

[0025] Specifically, such as Figures 1 to 3As shown, an automatic sealing device for bags includes a barrel 1, a frame 2, and a pressure plate 3. The pressure plate 3 is suspended at the top of the opening of the barrel 1. The end of the pressure plate 3 away from the barrel 1 is telescopically connected to the frame 2. The device also includes a first film clamping assembly 4, a second film clamping assembly 5, and a pair of film supporting assemblies 6. Both ends of the pressure plate 3 have first openings 31 for the film supporting assemblies 6 to reciprocate through. The film supporting assemblies 6 are connected to a sliding assembly 13 via a lifting cylinder. The sliding assembly 13 is connected to the frame 2. The first film clamping assembly 4 and the second film clamping assembly 5 are telescopically connected to the ends of the pressure plate 3 away from the pair of film supporting assemblies 6.

[0026] In this embodiment, before sealing the bag, the film-supporting assembly 6 is first sent to the top of the barrel 1 by the sliding assembly 13 and embedded into the first opening 31. Then, the pressure plate 3 is lowered into the barrel 1 by the telescopic adjustment of the pressure plate 3, so that the bag that has been heat-sealed is pressed into the inner cavity of the barrel 1. Then, the pair of film-supporting assemblies 6 are adjusted by the lifting cylinder to extend into the inside of the bag from the bag opening. Then, the film-supporting assembly 6 is pushed out of the first opening 31 by the sliding assembly 13 and the bag is continuously pushed in the horizontal direction. The pair of film-supporting assemblies 6 move in the opposite direction, so as to flatten the bag opening end of the bag and complete the arrangement. Then, the first clamping film assembly 4 and the second clamping film assembly 5 are adjusted by telescopic adjustment to complete the heat sealing of the bag opening.

[0027] In this embodiment, the sliding assembly 13 includes a slide block, a connecting slider, and a horizontal telescopic rod; the frame 2 is provided with a slide groove; both ends of the connecting slider extend out of the slide groove and are respectively connected to the slide block and the membrane support assembly 6; the horizontal telescopic rod is located at the end of the frame 2 away from the membrane support assembly 6; the horizontal telescopic rod is connected to the slide block.

[0028] Specifically, such as Figure 1 and Figure 3 As shown, it also includes a pair of uprights 7; both ends of the pair of uprights 7 are connected by multiple sliding rods 8; both ends of the first membrane clamping assembly 4 and both ends of the second membrane clamping assembly 5 are connected to the sliding rods 8 by multiple sliding cylinders 9; a telescopic cylinder 10 is provided at the end of the second membrane clamping assembly 5 away from the first membrane clamping assembly 4; the telescopic cylinder 10 is connected to the top of the uprights 7.

[0029] In this embodiment, the second clamping membrane assembly 5 is pushed towards the first clamping membrane assembly 4 by the telescopic cylinder 10, thereby completing the hot-press sealing. To ensure stability during the hot-pressing process, multiple sliding cylinders 9 are provided at both ends of the first clamping membrane assembly 4 and both ends of the second clamping membrane assembly 5. The stability during the hot-pressing process is ensured by the sliding of the multiple sliding cylinders 9 along the sliding rod 8.

[0030] Specifically, such as Figure 1 and Figure 3As shown, the first film clamping assembly 4 includes a first film clamping plate 41 and a first pressing plate 42; the second film clamping assembly 5 includes a second film clamping plate 51, a second pressing plate 52, and a heating strip 53; the first pressing plate 42 and the second pressing plate 52 are disposed opposite each other on both sides of the pressing plate 3; the first pressing plate 42 is disposed on the side of the first film clamping plate 41 near the second pressing plate 52; the second pressing plate 52 is disposed on the second film clamping plate 51; the heating strip 53 is disposed on the side of the second pressing plate 52 near the first pressing plate 42; the telescopic cylinder 10 is connected to the end of the second film clamping plate 51 away from the first film clamping plate 41. The second pressing plate 52 is connected to the end of the second film clamping plate 51 away from the heating strip 53 through multiple heat sealing cylinders 11.

[0031] In this embodiment, during the hot pressing stage, the second pressing plate 52 is pushed towards the first clamping plate 41 by the telescopic cylinder 10, and the heating strip 53 is further squeezed towards the first clamping plate 41 by the heat sealing cylinder 11, thereby achieving uniform pressing and heat sealing of the bag opening.

[0032] In this embodiment, the second clamping plate 51 first abuts against the first clamping plate 41, which can clamp the bag opening and ensure that the first clamping plate 41 is then driven by the heat sealing cylinder 11 to perform extrusion heat sealing, thereby ensuring the stability of the bag opening during heat sealing and improving the uniformity of heat sealing.

[0033] Specifically, such as Figure 1 and Figure 3 As shown, the first pressure plate 42 is provided with multiple buffer components 12 at the end away from the heating strip 53.

[0034] In this embodiment, the buffer assembly 12 is a buffer spring or a buffer pad.

[0035] Specifically, such as Figure 1 and Figure 2 As shown, the pressure plate 3 has a second opening 32 in the middle; a pair of first openings 31 are disposed opposite each other at both ends of the second opening 32; the frame 2 extends toward the second opening 32 and is provided with a sorting plate; the sorting plate is connected to the frame 2 through a telescopic assembly. The film support assembly 6 includes a film support vertical plate 61 and an arc-shaped barb 62; one end of the film support vertical plate 61 is connected to the sliding assembly 13; the other end of the film support vertical plate 61 extends toward the outer wall of the barrel 1 and is provided with an arc-shaped barb 62.

[0036] In this embodiment, the telescopic assembly consists of multiple electric telescopic rods or telescopic cylinders. The tidying plate is inserted into or extended from the bag opening via the telescopic assembly. Specifically, when the bag opening is pulled horizontally by a pair of vertical film-supporting plates 6, the tidying plate is inserted into the bag. After the bag opening is tidyed, the tidying plate is pulled out, and simultaneously, the first film-clamping plate 41 and the second film-clamping plate 51 press the tidyed bag opening tightly. The bag is then heat-sealed after the tidying plate is completely removed. This ensures that the bag opening remains straightened after tidying until heat sealing, facilitating uniform heat sealing. The use of arc-shaped barbs 62 prevents damage to the bag body.

[0037] In this embodiment, the sorting plate is preferably triangular, with its wider end close to the barrel 1, which can effectively sort and maintain the bag opening after it has been stretched.

Claims

1. An automatic sealing device for bags, comprising a barrel (1), a frame (2), and a pressure plate (3), wherein the pressure plate (3) is suspended at the top of the opening of the barrel (1); one end of the pressure plate (3) away from the barrel (1) is telescopically connected to the frame (2), characterized in that: It also includes a first film clamping assembly (4), a second film clamping assembly (5), and a pair of film support assemblies (6); both ends of the pressure plate (3) are provided with a first opening (31) for the film support assembly (6) to reciprocate through; the film support assembly (6) is connected to a sliding assembly (13) through a lifting cylinder; the sliding assembly (13) is connected to the frame (2); the first film clamping assembly (4) and the second film clamping assembly (5) are telescopically connected to the two ends of the pressure plate (3) away from the pair of film support assemblies (6).

2. The automatic sealing device for bags according to claim 1, characterized in that: It also includes a pair of uprights (7); both ends of the pair of uprights (7) are connected by multiple sliding rods (8); both ends of the first film clamping assembly (4) and both ends of the second film clamping assembly (5) are connected to the sliding rods (8) by multiple sliding cylinders (9); a telescopic cylinder (10) is provided at the end of the second film clamping assembly (5) away from the first film clamping assembly (4); the telescopic cylinder (10) is connected to the top of the uprights (7).

3. The automatic sealing device for bags according to claim 2, characterized in that: The first film clamping assembly (4) includes a first film clamping plate (41) and a first pressure plate (42); the second film clamping assembly (5) includes a second film clamping plate (51), a second pressure plate (52) and a heating strip (53); the first pressure plate (42) and the second pressure plate (52) are disposed opposite to each other on both sides of the pressure plate (3); the first pressure plate (42) is disposed on the side of the first film clamping plate (41) close to the second pressure plate (52); the second pressure plate (52) is disposed on the second film clamping plate (51); the heating strip (53) is disposed on the side of the second pressure plate (52) close to the first pressure plate (42); the telescopic cylinder (10) is connected to the end of the second film clamping plate (51) away from the first film clamping plate (41).

4. The automatic sealing device for bags according to claim 3, characterized in that: The second pressure plate (52) is connected to the end of the second clamping plate (51) away from the heating strip (53) by a plurality of heat sealing cylinders (11).

5. The automatic sealing device for bags according to claim 3, characterized in that: The first pressure plate (42) has multiple buffer components (12) at the end away from the heating strip (53).

6. The automatic sealing device for bags according to any one of claims 1 to 5, characterized in that: The pressure plate (3) has a second opening (32) in the middle; a pair of first openings (31) are located opposite each other at both ends of the second opening (32); the frame (2) extends toward the second opening (32) and has a sorting plate; the sorting plate is connected to the frame (2) through a telescopic assembly.

7. The automatic sealing device for bags according to claim 6, characterized in that: The membrane support assembly (6) includes a membrane support vertical plate (61) and an arc-shaped barb (62); one end of the membrane support vertical plate (61) is connected to the sliding assembly (13); the other end of the membrane support vertical plate (61) extends toward the outer wall of the barrel (1) and is provided with the arc-shaped barb (62).

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