Plastic bag edge sealing machine with pressing mechanism

Abstract

A plastic bag edge sealing machine with a pressing mechanism comprises an upper pressing base, a workbench and an external pressing mechanism, a mounting hole is formed in the top of the upper pressing base and used for being connected with the external pressing mechanism, at least one set of upper base vertical plates are arranged on each of the two sides of the bottom face of the upper pressing base, rubber blocks are connected to the bottom faces of the upper base vertical plates through bolts, and semicircular grooves are formed in the bottoms of the rubber blocks. The rubber blocks and other structures are arranged, so that the pressing blocks can press the two sides of the plastic bag when heating and pressing the plastic bag, the plastic bag is locally stretched through the plasticity of the plastic bag, and waste products caused by excessive shrinkage of the plastic bag or deviation of the upper piece and the lower piece of the plastic bag caused by excessive shrinkage are avoided.

Description

Technical Field

[0001] The utility model relates to a plastic bag edge sealing machine, in particular to a plastic bag edge sealing machine with a pressing mechanism. Background Art

[0002] A plastic bag edge sealing machine is a device that uses a hot melt machine to seal the edges of plastic bags or extrude an easy-to-tear dotted line structure. When producing and processing plastic bags, the edge sealing machine needs to achieve an edge sealing effect on one end of the plastic bag, so that the plastic bag has a loading or easy-to-tear effect. Based on this demand, an edge sealing machine suitable for plastic bag edge sealing has been derived. The existing edge sealing device mainly consists of a body, a heating strip and a lower pressure block. The lower pressure block and the heating strip cooperate to achieve the edge sealing function of the plastic bag. The lower pressure block and the heating strip are both arranged on the top of the body. Summary of the Invention

[0003] The purpose of the utility model is to provide a plastic bag edge sealing machine with a pressing mechanism, so as to realize pressing the plastic bag when sealing the edge of the plastic bag, and avoid the lack of a pressing device causing the plastic bag to shrink excessively due to heat, resulting in excessive overall displacement and generating waste.

[0004] In response to the above problems, a plastic bag edge sealing machine with a clamping mechanism is provided, which is characterized in that it includes an upper pressure seat, a workbench and an external downward pressure mechanism. A mounting hole is provided on the top of the upper pressure seat, and the mounting hole is used to connect with the external downward pressure mechanism. At least one group of upper seat uprights are provided on both sides of the bottom surface of the upper pressure seat, and a rubber block is bolted to the bottom surface of the upper seat upright, and the bottom of the rubber block is a semicircular groove.

[0005] Preferably, the upper pressure seat is located between the two groups of upper seat vertical plates and is bolted with at least two groups of countersunk bolts. An upper pressure block is provided at one end of the countersunk bolt away from the connecting end of the countersunk bolt. A sliding groove is provided in the upper pressure block and is clearance-matched with the connecting part of the countersunk bolt. A spring is provided on the outer surface of the countersunk bolt, and the spring is provided between the top of the upper pressure block and the bottom surface of the upper pressure seat.

[0006] Preferably, the bottom surface of the upper pressing block is fixedly connected to the thermal conductive strip, the thermal conductive strip passes through the side walls of the upper pressing block horizontally, heaters are fixedly connected to both ends of the thermal conductive strip, and multiple groups of pressing blocks are evenly distributed on the bottom of the thermal conductive strip, and the bottom of the pressing block is in the shape of a long strip.

[0007] Preferably, a plurality of compression strips are provided on both sides of the upper surface of the workbench, the plurality of compression strips are provided at a position vertically downward from the rubber block, and the upper surface of the compression strips matches the shape of the bottom surface of the rubber block.

[0008] Preferably, a pressure bar is fixedly connected to the upper surface of the workbench, and the pressure bar is arranged at a position vertically downward from the pressing block.

[0009] Preferably, those skilled in the art should know that the external pressing mechanism is a prior art in the art, so the external pressing mechanism will not be described in detail.

[0010] Preferably, the heat conducting strips and the pressing blocks are both made of alloys with excellent heat conducting properties.

[0011] In summary, the beneficial effects of the present invention are:

[0012] The utility model provides structures such as rubber blocks so that the pressing blocks can press both sides of the plastic bag when heating and pressing the plastic bag, and utilizes the plasticity of the plastic bag to locally stretch the plastic bag, thereby avoiding waste caused by excessive shrinkage of the plastic bag or deviation of the upper and lower pieces of the plastic bag caused by excessive shrinkage. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 This is a schematic diagram of the structure of the upper pressure seat of the utility model;

[0015] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention;

[0016] In the figure: 1. Upper pressure seat; 111. Mounting hole; 121. Upper seat vertical plate; 122. Rubber block; 2. Upper pressure block; 221. Countersunk bolt; 222. Spring; 223. Sliding groove; 231. Heater; 232. Pressing block; 233. Heat conducting strip; 3. Workbench; 311. Pressing strip; 312. Pressure strip. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions, and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to facilitate a more thorough understanding of the present invention and to fully convey the concept of the present invention to those skilled in the art.

[0018] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are contradictory.

[0019] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0020] See also Figure 1 As shown, a mounting hole 111 is provided on the top of the upper pressure seat 1, and the mounting hole 111 is used to connect with the external downward pressure mechanism. At least one group of upper seat uprights 121 are provided on both sides of the bottom surface of the upper pressure seat 1. The bottom surface of the upper seat uprights 121 is bolted to a rubber block 122, and the bottom of the rubber block 122 is a semicircular groove.

[0021] See also Figure 2 or Figure 3 As shown, the upper pressure seat 1 is located between two groups of upper seat vertical plates 121 and is bolted with at least two groups of countersunk bolts 221. An upper pressure block 2 is provided at one end of the countersunk bolt 221 away from the connection end of the countersunk bolt 221. A sliding groove 223 is provided in the upper pressure block 2 to gap fit with the connection part of the countersunk bolt 221. A spring 222 is provided on the outer surface of the countersunk bolt 221. The spring 222 is provided between the top of the upper pressure block 2 and the bottom surface of the upper pressure seat 1.

[0022] Furthermore, a heat conducting strip 233 is fixedly connected to the bottom surface of the upper pressing block 2, and the heat conducting strip 233 runs horizontally through the side walls of the upper pressing block 2. Heaters 231 are fixedly connected to both ends of the heat conducting strip 233. Multiple groups of clamping blocks 232 are evenly distributed on the bottom of the heat conducting strip 233, and the bottom of the clamping block 232 is in the shape of a long strip.

[0023] Furthermore, multiple sets of compression strips 311 are provided on both sides of the upper surface of the workbench 3 . The multiple sets of compression strips 311 are provided at a position vertically downward from the rubber block 122 , and the upper surface of the compression strips 311 matches the shape of the bottom surface of the rubber block 122 .

[0024] Furthermore, a pressure bar 312 is fixedly connected to the upper surface of the workbench 3 , and the pressure bar 312 is arranged at a position vertically downward from the pressing block 232 .

[0025] In this embodiment, a plastic bag edge sealing machine with a clamping mechanism is used. When in use, the plastic bag is installed on an external winding device and a feeding device, and placed on the upper surface of the workbench 3 according to the direction. The edge sealing mechanism is installed as a whole on the external downward pressing mechanism, so that the output end of the external downward pressing mechanism is fixedly connected to the mounting hole 111.

[0026] When in use, the output end of the external pressing mechanism pushes the edge sealing mechanism downward, and the upper pressing seat 1 pushes the upper pressing block 2 to move downward until the pressing block 232 installed on the upper pressing block 2 presses the plastic bag until it fits the upper surface of the pressure strip 312. The output end of the external pressing mechanism continues to push the upper pressing seat 1 downward, and the spring 222 contracts the countersunk bolt 221 to move downward along the sliding groove 223. The upper seat uprights 121 on both sides and the rubber blocks 122 set on the upper seat uprights 121 press down until the rubber blocks 122 press the plastic bag and fit the pressure strip 311. At the same time, the heater 231 is heated, and the heat passes through the heat-conducting strip 233 and the pressing block 232, so that the plastic bag is heated and the upper and lower surfaces are heat-sealed to complete the overall edge sealing. By setting the rubber block 122 and other structures, the pressing block 232 can press the two sides of the plastic bag when heating and pressing the plastic bag, and use the plasticity of the plastic bag to locally stretch the plastic bag, avoiding excessive shrinkage of the plastic bag to cause waste or excessive shrinkage to cause the upper and lower pieces of the plastic bag to offset.

[0027] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to be limiting. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A plastic bag edge sealing machine with a pressing mechanism, characterized in that: The utility model comprises an upper pressing seat (1), a workbench (3) and an external pressing mechanism, wherein a mounting hole (111) is provided on the top of the upper pressing seat (1), and the mounting hole (111) is used to connect with the external pressing mechanism, and at least one set of upper seat uprights (121) are provided on both sides of the bottom surface of the upper pressing seat (1), and a rubber block (122) is bolted to the bottom surface of the upper seat uprights (121), and the bottom of the rubber block (122) is a semicircular groove.

2. The plastic bag edge sealing machine with a pressing mechanism according to claim 1, characterized in that: The upper pressure seat (1) is located between the two groups of upper seat uprights (121) and is fixedly connected with at least two groups of countersunk bolts (221); an upper pressure block (2) is provided at one end of the countersunk bolt (221) away from the connection end of the countersunk bolt (221); and a sliding groove (223) is provided in the upper pressure block (2) to be clearance-matched with the connection part of the countersunk bolt (221).

3. The plastic bag edge sealing machine with a pressing mechanism according to claim 2, characterized in that: A spring (222) is provided on the outer surface of the countersunk bolt (221), and the spring (222) is provided between the top of the upper pressing block (2) and the bottom surface of the upper pressing seat (1).

4. The plastic bag edge sealing machine with a pressing mechanism according to claim 2, characterized in that: The bottom surface of the upper pressing block (2) is fixedly connected to a heat conducting strip (233), the heat conducting strip (233) runs through the side walls of both sides of the upper pressing block (2) in a transverse direction, the two ends of the heat conducting strip (233) are fixedly connected to heaters (231), and a plurality of groups of pressing blocks (232) are evenly distributed on the bottom of the heat conducting strip (233), and the bottom of the pressing block (232) is in the shape of an elongated strip.

5. A plastic bag edge sealing machine with a pressing mechanism according to claim 1 or claim 2, characterized in that: A plurality of groups of pressing strips (311) are provided on both sides of the upper surface of the workbench (3), and the plurality of groups of pressing strips (311) are provided at a position vertically downward from the rubber block (122), and the upper surface of the pressing strips (311) matches the shape of the bottom surface of the rubber block (122).

6. The plastic bag edge sealing machine with a pressing mechanism according to claim 4, characterized in that: A pressure bar (312) is fixedly connected to the upper surface of the workbench (3), and the pressure bar (312) is arranged at a position vertically downward of the pressing block (232).

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